[PATCH 0/5 v7] mfd: omap: usb: Runtime PM support for EHCI and OHCI drivers

[PATCH 0/5 v7] mfd: omap: usb: Runtime PM support for EHCI and OHCI drivers

[Keshava Munegowda]

From: Keshava Munegowda <Keshava_mgowda@ti.com>

The Hwmod structures and Runtime PM features are implemented
For EHCI and OHCI drivers of OMAP3 and OMAP4.
The global suspend/resume of EHCI and OHCI
is validated on OMAP3430 sdp board with these patches.

these patches are rebased to kevin's pm branch and
usbhs latest mainline kernel patches

TODO:
    - Adding pad configurations to Hwmods	
    - Aggressive clock cutting in usb bus suspends
    - Remote Wakeup implementation using irq-chaining


Benoit Cousson (1):
  arm: omap: usb: ehci and ohci hwmod structures for omap4

Keshava Munegowda (4):
  arm: omap: usb: ehci and ohci hwmod structures for omap3
  arm: omap: usb: register hwmods of usbhs
  arm: omap: usb: device name change for the clk names of usbhs
  mfd: omap: usb: Runtime PM support

 arch/arm/mach-omap2/clock3xxx_data.c       |   26 +-
 arch/arm/mach-omap2/clock44xx_data.c       |   10 +-
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c |  282 +++++++++++
 arch/arm/mach-omap2/omap_hwmod_44xx_data.c |  247 ++++++++++
 arch/arm/mach-omap2/usb-host.c             |  114 ++---
 arch/arm/plat-omap/include/plat/usb.h      |    3 -
 drivers/mfd/omap-usb-host.c                |  733 +++++++++++-----------------
 drivers/usb/host/ehci-omap.c               |   17 +-
 drivers/usb/host/ohci-omap3.c              |   18 +-
 9 files changed, 892 insertions(+), 558 deletions(-)

[PATCH 0/5 v7] mfd: omap: usb: Runtime PM support for EHCI and OHCI drivers

[Keshava Munegowda]

From: Keshava Munegowda <Keshava_mgowda@ti.com>

The Hwmod structures and Runtime PM features are implemented
For EHCI and OHCI drivers of OMAP3 and OMAP4.
The global suspend/resume of EHCI and OHCI
is validated on OMAP3430 sdp board with these patches.

these patches are rebased to kevin's pm branch and
usbhs latest mainline kernel patches

TODO:
    - Adding pad configurations to Hwmods	
    - Aggressive clock cutting in usb bus suspends
    - Remote Wakeup implementation using irq-chaining


Benoit Cousson (1):
  arm: omap: usb: ehci and ohci hwmod structures for omap4

Keshava Munegowda (4):
  arm: omap: usb: ehci and ohci hwmod structures for omap3
  arm: omap: usb: register hwmods of usbhs
  arm: omap: usb: device name change for the clk names of usbhs
  mfd: omap: usb: Runtime PM support

 arch/arm/mach-omap2/clock3xxx_data.c       |   26 +-
 arch/arm/mach-omap2/clock44xx_data.c       |   10 +-
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c |  282 +++++++++++
 arch/arm/mach-omap2/omap_hwmod_44xx_data.c |  247 ++++++++++
 arch/arm/mach-omap2/usb-host.c             |  114 ++---
 arch/arm/plat-omap/include/plat/usb.h      |    3 -
 drivers/mfd/omap-usb-host.c                |  733 +++++++++++-----------------
 drivers/usb/host/ehci-omap.c               |   17 +-
 drivers/usb/host/ohci-omap3.c              |   18 +-
 9 files changed, 892 insertions(+), 558 deletions(-)

[PATCH 1/5 v7] arm: omap: usb: ehci and ohci hwmod structures for omap4

[Keshava Munegowda]

From: Benoit Cousson <b-cousson@ti.com>

Following 4 hwmod structures are added:
UHH hwmod of usbhs with uhh base address and functional clock,
EHCI hwmod with irq and base address,
OHCI hwmod with irq and base address,
TLL hwmod of usbhs with the TLL base address and irq.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/omap_hwmod_44xx_data.c |  247 ++++++++++++++++++++++++++++
 1 files changed, 247 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index 6201422..0bc01dd 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -68,6 +68,10 @@ static struct omap_hwmod omap44xx_mmc2_hwmod;
 static struct omap_hwmod omap44xx_mpu_hwmod;
 static struct omap_hwmod omap44xx_mpu_private_hwmod;
 static struct omap_hwmod omap44xx_usb_otg_hs_hwmod;
+static struct omap_hwmod omap44xx_usb_host_hs_hwmod;
+static struct omap_hwmod omap44xx_usbhs_ohci_hwmod;
+static struct omap_hwmod omap44xx_usbhs_ehci_hwmod;
+static struct omap_hwmod omap44xx_usb_tll_hs_hwmod;
 
 /*
  * Interconnects omap_hwmod structures
@@ -5336,6 +5340,245 @@ static struct omap_hwmod omap44xx_wd_timer3_hwmod = {
 	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
 };
 
+/*
+ * 'usb_host_hs' class
+ * high-speed multi-port usb host controller
+ */
+static struct omap_hwmod_ocp_if omap44xx_usb_host_hs__l3_main_2 = {
+	.master		= &omap44xx_usb_host_hs_hwmod,
+	.slave		= &omap44xx_l3_main_2_hwmod,
+	.clk		= "l3_div_ck",
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_class_sysconfig omap44xx_usb_host_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
+				SIDLE_SMART_WKUP | MSTANDBY_FORCE |
+				MSTANDBY_NO | MSTANDBY_SMART |
+				MSTANDBY_SMART_WKUP),
+	.sysc_fields	= &omap_hwmod_sysc_type2,
+};
+
+static struct omap_hwmod_class omap44xx_usb_host_hs_hwmod_class = {
+	.name = "usbhs_uhh",
+	.sysc = &omap44xx_usb_host_hs_sysc,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_masters[] = {
+	&omap44xx_usb_host_hs__l3_main_2,
+};
+
+static struct omap_hwmod_addr_space omap44xx_usb_host_hs_addrs[] = {
+	{
+		.name		= "uhh",
+		.pa_start	= 0x4a064000,
+		.pa_end		= 0x4a0647ff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_host_hs = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usb_host_hs_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usb_host_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_slaves[] = {
+	&omap44xx_l4_cfg__usb_host_hs,
+};
+
+static struct omap_hwmod omap44xx_usb_host_hs_hwmod = {
+	.name		= "usbhs_uhh",
+	.class		= &omap44xx_usb_host_hs_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.main_clk	= "usb_host_hs_fck",
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = OMAP4_CM_L3INIT_USB_HOST_CLKCTRL_OFFSET,
+			.context_offs = OMAP4_RM_L3INIT_USB_HOST_CONTEXT_OFFSET,
+			.modulemode   = MODULEMODE_SWCTRL,
+		},
+	},
+	.slaves		= omap44xx_usb_host_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usb_host_hs_slaves),
+	.masters	= omap44xx_usb_host_hs_masters,
+	.masters_cnt	= ARRAY_SIZE(omap44xx_usb_host_hs_masters),
+	.flags		= HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* 'usbhs_ohci' class */
+static struct omap_hwmod_class omap44xx_usbhs_ohci_hwmod_class = {
+	.name = "usbhs_ohci",
+};
+
+static struct omap_hwmod_irq_info omap44xx_usbhs_ohci_irqs[] = {
+	{ .name = "ohci-irq", .irq = 76 + OMAP44XX_IRQ_GIC_START },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap44xx_usbhs_ohci_addrs[] = {
+	{
+		.name		= "ohci",
+		.pa_start	= 0x4A064800,
+		.pa_end		= 0x4A064BFF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{}
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usbhs_ohci = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usbhs_ohci_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usbhs_ohci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ohci_slaves[] = {
+	&omap44xx_l4_cfg__usbhs_ohci,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ohci_masters[] = {
+	&omap44xx_usb_host_hs__l3_main_2,
+};
+
+static struct omap_hwmod omap44xx_usbhs_ohci_hwmod = {
+	.name		= "usbhs_ohci",
+	.class		= &omap44xx_usbhs_ohci_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.mpu_irqs	= omap44xx_usbhs_ohci_irqs,
+	.slaves		= omap44xx_usbhs_ohci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usbhs_ohci_slaves),
+	.masters	= omap44xx_usbhs_ohci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap44xx_usbhs_ohci_masters),
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+};
+
+/* 'usbhs_ehci' class */
+static struct omap_hwmod_class omap44xx_usbhs_ehci_hwmod_class = {
+	.name = "usbhs_ehci",
+};
+
+static struct omap_hwmod_irq_info omap44xx_usbhs_ehci_irqs[] = {
+	{ .name = "ehci-irq", .irq = 77 + OMAP44XX_IRQ_GIC_START },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap44xx_usbhs_ehci_addrs[] = {
+	{
+		.name		= "ehci",
+		.pa_start	= 0x4A064C00,
+		.pa_end		= 0x4A064FFF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usbhs_ehci = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usbhs_ehci_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usbhs_ehci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ehci_slaves[] = {
+	&omap44xx_l4_cfg__usbhs_ehci,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ehci_masters[] = {
+	&omap44xx_usb_host_hs__l3_main_2,
+};
+
+
+static struct omap_hwmod omap44xx_usbhs_ehci_hwmod = {
+	.name		= "usbhs_ehci",
+	.class		= &omap44xx_usbhs_ehci_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.mpu_irqs	= omap44xx_usbhs_ehci_irqs,
+	.slaves		= omap44xx_usbhs_ehci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usbhs_ehci_slaves),
+	.masters	= omap44xx_usbhs_ehci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap44xx_usbhs_ehci_masters),
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+};
+
+/*
+ * 'usb_tll_hs' class
+ * usb_tll_hs module is the adapter on the usb_host_hs ports
+ */
+static struct omap_hwmod_class_sysconfig omap44xx_usb_tll_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_SIDLEMODE |
+				SYSC_HAS_SOFTRESET | SYSC_HAS_ENAWAKEUP	|
+				SYSC_HAS_CLOCKACTIVITY),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap44xx_usb_tll_hs_hwmod_class = {
+	.name = "usbhs_tll",
+	.sysc = &omap44xx_usb_tll_hs_sysc,
+};
+
+static struct omap_hwmod_irq_info omap44xx_usb_tll_hs_irqs[] = {
+	{ .name = "tll-irq", .irq = 78 + OMAP44XX_IRQ_GIC_START },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap44xx_usb_tll_hs_addrs[] = {
+	{
+		.name		= "tll",
+		.pa_start	= 0x4a062000,
+		.pa_end		= 0x4a063fff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_tll_hs = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usb_tll_hs_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usb_tll_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usb_tll_hs_slaves[] = {
+	&omap44xx_l4_cfg__usb_tll_hs,
+};
+
+static struct omap_hwmod omap44xx_usb_tll_hs_hwmod = {
+	.name		= "usbhs_tll",
+	.class		= &omap44xx_usb_tll_hs_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.mpu_irqs	= omap44xx_usb_tll_hs_irqs,
+	.main_clk	= "usb_tll_hs_ick",
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = OMAP4_CM_L3INIT_USB_TLL_CLKCTRL_OFFSET,
+			.context_offs = OMAP4_RM_L3INIT_USB_TLL_CONTEXT_OFFSET,
+			.modulemode   = MODULEMODE_HWCTRL,
+		},
+	},
+	.slaves		= omap44xx_usb_tll_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usb_tll_hs_slaves),
+	.flags		= HWMOD_SWSUP_SIDLE,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
 static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 
 	/* dmm class */
@@ -5482,6 +5725,10 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 	&omap44xx_wd_timer2_hwmod,
 	&omap44xx_wd_timer3_hwmod,
 
+	&omap44xx_usb_host_hs_hwmod,
+	&omap44xx_usbhs_ohci_hwmod,
+	&omap44xx_usbhs_ehci_hwmod,
+	&omap44xx_usb_tll_hs_hwmod,
 	NULL,
 };
 
-- 
1.6.0.4

[PATCH 1/5 v7] arm: omap: usb: ehci and ohci hwmod structures for omap4

[Keshava Munegowda]

From: Benoit Cousson <b-cousson@ti.com>

Following 4 hwmod structures are added:
UHH hwmod of usbhs with uhh base address and functional clock,
EHCI hwmod with irq and base address,
OHCI hwmod with irq and base address,
TLL hwmod of usbhs with the TLL base address and irq.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/omap_hwmod_44xx_data.c |  247 ++++++++++++++++++++++++++++
 1 files changed, 247 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index 6201422..0bc01dd 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -68,6 +68,10 @@ static struct omap_hwmod omap44xx_mmc2_hwmod;
 static struct omap_hwmod omap44xx_mpu_hwmod;
 static struct omap_hwmod omap44xx_mpu_private_hwmod;
 static struct omap_hwmod omap44xx_usb_otg_hs_hwmod;
+static struct omap_hwmod omap44xx_usb_host_hs_hwmod;
+static struct omap_hwmod omap44xx_usbhs_ohci_hwmod;
+static struct omap_hwmod omap44xx_usbhs_ehci_hwmod;
+static struct omap_hwmod omap44xx_usb_tll_hs_hwmod;
 
 /*
  * Interconnects omap_hwmod structures
@@ -5336,6 +5340,245 @@ static struct omap_hwmod omap44xx_wd_timer3_hwmod = {
 	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
 };
 
+/*
+ * 'usb_host_hs' class
+ * high-speed multi-port usb host controller
+ */
+static struct omap_hwmod_ocp_if omap44xx_usb_host_hs__l3_main_2 = {
+	.master		= &omap44xx_usb_host_hs_hwmod,
+	.slave		= &omap44xx_l3_main_2_hwmod,
+	.clk		= "l3_div_ck",
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_class_sysconfig omap44xx_usb_host_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
+				SIDLE_SMART_WKUP | MSTANDBY_FORCE |
+				MSTANDBY_NO | MSTANDBY_SMART |
+				MSTANDBY_SMART_WKUP),
+	.sysc_fields	= &omap_hwmod_sysc_type2,
+};
+
+static struct omap_hwmod_class omap44xx_usb_host_hs_hwmod_class = {
+	.name = "usbhs_uhh",
+	.sysc = &omap44xx_usb_host_hs_sysc,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_masters[] = {
+	&omap44xx_usb_host_hs__l3_main_2,
+};
+
+static struct omap_hwmod_addr_space omap44xx_usb_host_hs_addrs[] = {
+	{
+		.name		= "uhh",
+		.pa_start	= 0x4a064000,
+		.pa_end		= 0x4a0647ff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_host_hs = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usb_host_hs_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usb_host_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_slaves[] = {
+	&omap44xx_l4_cfg__usb_host_hs,
+};
+
+static struct omap_hwmod omap44xx_usb_host_hs_hwmod = {
+	.name		= "usbhs_uhh",
+	.class		= &omap44xx_usb_host_hs_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.main_clk	= "usb_host_hs_fck",
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = OMAP4_CM_L3INIT_USB_HOST_CLKCTRL_OFFSET,
+			.context_offs = OMAP4_RM_L3INIT_USB_HOST_CONTEXT_OFFSET,
+			.modulemode   = MODULEMODE_SWCTRL,
+		},
+	},
+	.slaves		= omap44xx_usb_host_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usb_host_hs_slaves),
+	.masters	= omap44xx_usb_host_hs_masters,
+	.masters_cnt	= ARRAY_SIZE(omap44xx_usb_host_hs_masters),
+	.flags		= HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* 'usbhs_ohci' class */
+static struct omap_hwmod_class omap44xx_usbhs_ohci_hwmod_class = {
+	.name = "usbhs_ohci",
+};
+
+static struct omap_hwmod_irq_info omap44xx_usbhs_ohci_irqs[] = {
+	{ .name = "ohci-irq", .irq = 76 + OMAP44XX_IRQ_GIC_START },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap44xx_usbhs_ohci_addrs[] = {
+	{
+		.name		= "ohci",
+		.pa_start	= 0x4A064800,
+		.pa_end		= 0x4A064BFF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{}
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usbhs_ohci = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usbhs_ohci_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usbhs_ohci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ohci_slaves[] = {
+	&omap44xx_l4_cfg__usbhs_ohci,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ohci_masters[] = {
+	&omap44xx_usb_host_hs__l3_main_2,
+};
+
+static struct omap_hwmod omap44xx_usbhs_ohci_hwmod = {
+	.name		= "usbhs_ohci",
+	.class		= &omap44xx_usbhs_ohci_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.mpu_irqs	= omap44xx_usbhs_ohci_irqs,
+	.slaves		= omap44xx_usbhs_ohci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usbhs_ohci_slaves),
+	.masters	= omap44xx_usbhs_ohci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap44xx_usbhs_ohci_masters),
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+};
+
+/* 'usbhs_ehci' class */
+static struct omap_hwmod_class omap44xx_usbhs_ehci_hwmod_class = {
+	.name = "usbhs_ehci",
+};
+
+static struct omap_hwmod_irq_info omap44xx_usbhs_ehci_irqs[] = {
+	{ .name = "ehci-irq", .irq = 77 + OMAP44XX_IRQ_GIC_START },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap44xx_usbhs_ehci_addrs[] = {
+	{
+		.name		= "ehci",
+		.pa_start	= 0x4A064C00,
+		.pa_end		= 0x4A064FFF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usbhs_ehci = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usbhs_ehci_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usbhs_ehci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ehci_slaves[] = {
+	&omap44xx_l4_cfg__usbhs_ehci,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usbhs_ehci_masters[] = {
+	&omap44xx_usb_host_hs__l3_main_2,
+};
+
+
+static struct omap_hwmod omap44xx_usbhs_ehci_hwmod = {
+	.name		= "usbhs_ehci",
+	.class		= &omap44xx_usbhs_ehci_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.mpu_irqs	= omap44xx_usbhs_ehci_irqs,
+	.slaves		= omap44xx_usbhs_ehci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usbhs_ehci_slaves),
+	.masters	= omap44xx_usbhs_ehci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap44xx_usbhs_ehci_masters),
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+};
+
+/*
+ * 'usb_tll_hs' class
+ * usb_tll_hs module is the adapter on the usb_host_hs ports
+ */
+static struct omap_hwmod_class_sysconfig omap44xx_usb_tll_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_SIDLEMODE |
+				SYSC_HAS_SOFTRESET | SYSC_HAS_ENAWAKEUP	|
+				SYSC_HAS_CLOCKACTIVITY),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap44xx_usb_tll_hs_hwmod_class = {
+	.name = "usbhs_tll",
+	.sysc = &omap44xx_usb_tll_hs_sysc,
+};
+
+static struct omap_hwmod_irq_info omap44xx_usb_tll_hs_irqs[] = {
+	{ .name = "tll-irq", .irq = 78 + OMAP44XX_IRQ_GIC_START },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap44xx_usb_tll_hs_addrs[] = {
+	{
+		.name		= "tll",
+		.pa_start	= 0x4a062000,
+		.pa_end		= 0x4a063fff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_tll_hs = {
+	.master		= &omap44xx_l4_cfg_hwmod,
+	.slave		= &omap44xx_usb_tll_hs_hwmod,
+	.clk		= "l4_div_ck",
+	.addr		= omap44xx_usb_tll_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap44xx_usb_tll_hs_slaves[] = {
+	&omap44xx_l4_cfg__usb_tll_hs,
+};
+
+static struct omap_hwmod omap44xx_usb_tll_hs_hwmod = {
+	.name		= "usbhs_tll",
+	.class		= &omap44xx_usb_tll_hs_hwmod_class,
+	.clkdm_name	= "l3_init_clkdm",
+	.mpu_irqs	= omap44xx_usb_tll_hs_irqs,
+	.main_clk	= "usb_tll_hs_ick",
+	.prcm = {
+		.omap4 = {
+			.clkctrl_offs = OMAP4_CM_L3INIT_USB_TLL_CLKCTRL_OFFSET,
+			.context_offs = OMAP4_RM_L3INIT_USB_TLL_CONTEXT_OFFSET,
+			.modulemode   = MODULEMODE_HWCTRL,
+		},
+	},
+	.slaves		= omap44xx_usb_tll_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_usb_tll_hs_slaves),
+	.flags		= HWMOD_SWSUP_SIDLE,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
 static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 
 	/* dmm class */
@@ -5482,6 +5725,10 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 	&omap44xx_wd_timer2_hwmod,
 	&omap44xx_wd_timer3_hwmod,
 
+	&omap44xx_usb_host_hs_hwmod,
+	&omap44xx_usbhs_ohci_hwmod,
+	&omap44xx_usbhs_ehci_hwmod,
+	&omap44xx_usb_tll_hs_hwmod,
 	NULL,
 };
 
-- 
1.6.0.4

[PATCH 2/5 v7] arm: omap: usb: ehci and ohci hwmod structures for omap3

[Keshava Munegowda]

Following 4 hwmod structure are added:
UHH hwmod of usbhs with uhh base address and functional clock,
EHCI hwmod with irq and base address,
OHCI hwmod with irq and base address,
TLL hwmod of usbhs with the TLL base address and irq.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c |  282 ++++++++++++++++++++++++++++
 1 files changed, 282 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 59fdb9f..a5531f7 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -84,6 +84,10 @@ static struct omap_hwmod omap3xxx_mcbsp4_hwmod;
 static struct omap_hwmod omap3xxx_mcbsp5_hwmod;
 static struct omap_hwmod omap3xxx_mcbsp2_sidetone_hwmod;
 static struct omap_hwmod omap3xxx_mcbsp3_sidetone_hwmod;
+static struct omap_hwmod omap34xx_usb_host_hs_hwmod;
+static struct omap_hwmod omap34xx_usbhs_ohci_hwmod;
+static struct omap_hwmod omap34xx_usbhs_ehci_hwmod;
+static struct omap_hwmod omap34xx_usb_tll_hs_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = {
@@ -3196,6 +3200,279 @@ static struct omap_hwmod omap3xxx_mmc3_hwmod = {
 	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
 };
 
+/*
+ * 'usb_host_hs' class
+ * high-speed multi-port usb host controller
+ */
+static struct omap_hwmod_ocp_if omap34xx_usb_host_hs__l3_main_2 = {
+	.master		= &omap34xx_usb_host_hs_hwmod,
+	.slave		= &omap3xxx_l3_main_hwmod,
+	.clk		= "core_l3_ick",
+	.user		= OCP_USER_MPU,
+};
+
+static struct omap_hwmod_class_sysconfig omap34xx_usb_host_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE |
+				SYSC_HAS_SOFTRESET),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
+			   MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap34xx_usb_host_hs_hwmod_class = {
+	.name = "usbhs_uhh",
+	.sysc = &omap34xx_usb_host_hs_sysc,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usb_host_hs_masters[] = {
+	&omap34xx_usb_host_hs__l3_main_2,
+};
+
+static struct omap_hwmod_addr_space omap34xx_usb_host_hs_addrs[] = {
+	{
+		.name		= "uhh",
+		.pa_start	= 0x48064000,
+		.pa_end		= 0x480643ff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usb_host_hs = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usb_host_hs_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usb_host_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if omap34xx_f128m_cfg__usb_host_hs = {
+	.clk		= "usbhost_120m_fck",
+	.user		= OCP_USER_MPU,
+	.flags		= OCPIF_SWSUP_IDLE,
+};
+
+static struct omap_hwmod_ocp_if omap34xx_f48m_cfg__usb_host_hs = {
+	.clk		= "usbhost_48m_fck",
+	.user		= OCP_USER_MPU,
+	.flags		= OCPIF_SWSUP_IDLE,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usb_host_hs_slaves[] = {
+	&omap34xx_l4_cfg__usb_host_hs,
+	&omap34xx_f128m_cfg__usb_host_hs,
+	&omap34xx_f48m_cfg__usb_host_hs,
+};
+
+static struct omap_hwmod omap34xx_usb_host_hs_hwmod = {
+	.name		= "usbhs_uhh",
+	.class		= &omap34xx_usb_host_hs_hwmod_class,
+	.main_clk	= "usbhost_ick",
+	.prcm = {
+		.omap2 = {
+			.module_offs = OMAP3430ES2_USBHOST_MOD,
+			.prcm_reg_id = 1,
+			.module_bit = 0,
+			.idlest_reg_id = 1,
+			.idlest_idle_bit = 1,
+			.idlest_stdby_bit = 0,
+		},
+	},
+	.slaves		= omap34xx_usb_host_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usb_host_hs_slaves),
+	.masters	= omap34xx_usb_host_hs_masters,
+	.masters_cnt	= ARRAY_SIZE(omap34xx_usb_host_hs_masters),
+	.flags		= HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* 'usbhs_ohci' class  */
+static struct omap_hwmod_ocp_if omap34xx_usbhs_ohci__l3_main_2 = {
+	.master		= &omap34xx_usbhs_ohci_hwmod,
+	.slave		= &omap3xxx_l3_main_hwmod,
+	.clk		= "core_l3_ick",
+	.user		= OCP_USER_MPU,
+};
+
+static struct omap_hwmod_class omap34xx_usbhs_ohci_hwmod_class = {
+	.name = "usbhs_ohci",
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ohci_masters[] = {
+	&omap34xx_usbhs_ohci__l3_main_2,
+};
+
+static struct omap_hwmod_irq_info omap34xx_usbhs_ohci_irqs[] = {
+	{ .name = "ohci-irq", .irq = 76 },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap34xx_usbhs_ohci_addrs[] = {
+	{
+		.name		= "ohci",
+		.pa_start	= 0x48064400,
+		.pa_end		= 0x480647FF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usbhs_ohci = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usbhs_ohci_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usbhs_ohci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ohci_slaves[] = {
+	&omap34xx_l4_cfg__usbhs_ohci,
+};
+
+static struct omap_hwmod omap34xx_usbhs_ohci_hwmod = {
+	.name		= "usbhs_ohci",
+	.class		= &omap34xx_usbhs_ohci_hwmod_class,
+	.mpu_irqs	= omap34xx_usbhs_ohci_irqs,
+	.slaves		= omap34xx_usbhs_ohci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usbhs_ohci_slaves),
+	.masters	= omap34xx_usbhs_ohci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap34xx_usbhs_ohci_masters),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* 'usbhs_ehci' class  */
+static struct omap_hwmod_ocp_if omap34xx_usbhs_ehci__l3_main_2 = {
+	.master		= &omap34xx_usbhs_ehci_hwmod,
+	.slave		= &omap3xxx_l3_main_hwmod,
+	.clk		= "core_l3_ick",
+	.user		= OCP_USER_MPU,
+};
+
+static struct omap_hwmod_class omap34xx_usbhs_ehci_hwmod_class = {
+	.name = "usbhs_ehci",
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ehci_masters[] = {
+	&omap34xx_usbhs_ehci__l3_main_2,
+};
+
+static struct omap_hwmod_irq_info omap34xx_usbhs_ehci_irqs[] = {
+	{ .name = "ehci-irq", .irq = 77 },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap34xx_usbhs_ehci_addrs[] = {
+	{
+		.name		= "ehci",
+		.pa_start	= 0x48064800,
+		.pa_end		= 0x48064CFF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usbhs_ehci = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usbhs_ehci_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usbhs_ehci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ehci_slaves[] = {
+	&omap34xx_l4_cfg__usbhs_ehci,
+};
+
+static struct omap_hwmod omap34xx_usbhs_ehci_hwmod = {
+	.name		= "usbhs_ehci",
+	.class		= &omap34xx_usbhs_ehci_hwmod_class,
+	.mpu_irqs	= omap34xx_usbhs_ehci_irqs,
+	.slaves		= omap34xx_usbhs_ehci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usbhs_ehci_slaves),
+	.masters	= omap34xx_usbhs_ehci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap34xx_usbhs_ehci_masters),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/*
+ * 'usb_tll_hs' class
+ * usb_tll_hs module is the adapter on the usb_host_hs ports
+ */
+static struct omap_hwmod_class_sysconfig omap34xx_usb_tll_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_SIDLEMODE |
+				SYSC_HAS_SOFTRESET | SYSC_HAS_ENAWAKEUP	|
+				SYSC_HAS_CLOCKACTIVITY),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap34xx_usb_tll_hs_hwmod_class = {
+	.name = "usbhs_tll",
+	.sysc = &omap34xx_usb_tll_hs_sysc,
+};
+
+static struct omap_hwmod_irq_info omap34xx_usb_tll_hs_irqs[] = {
+	{ .name = "tll-irq", .irq = 78 },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap34xx_usb_tll_hs_addrs[] = {
+	{
+		.name		= "tll",
+		.pa_start	= 0x48062000,
+		.pa_end		= 0x48062fff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_f_cfg__usb_tll_hs = {
+	.clk		= "usbtll_fck",
+	.user		= OCP_USER_MPU,
+	.flags		= OCPIF_SWSUP_IDLE,
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usb_tll_hs = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usb_tll_hs_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usb_tll_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usb_tll_hs_slaves[] = {
+	&omap34xx_l4_cfg__usb_tll_hs,
+	&omap34xx_f_cfg__usb_tll_hs,
+};
+
+static struct omap_hwmod omap34xx_usb_tll_hs_hwmod = {
+	.name		= "usbhs_tll",
+	.class		= &omap34xx_usb_tll_hs_hwmod_class,
+	.mpu_irqs	= omap34xx_usb_tll_hs_irqs,
+	.main_clk	= "usbtll_ick",
+	.prcm = {
+		.omap2 = {
+			.module_offs = CORE_MOD,
+			.prcm_reg_id = 3,
+			.module_bit = 2,
+			.idlest_reg_id = 3,
+			.idlest_idle_bit = 2,
+		},
+	},
+	.slaves		= omap34xx_usb_tll_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usb_tll_hs_slaves),
+	.flags		= HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
 static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
 	&omap3xxx_l3_main_hwmod,
 	&omap3xxx_l4_core_hwmod,
@@ -3278,6 +3555,11 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
 	/* usbotg for am35x */
 	&am35xx_usbhsotg_hwmod,
 
+	&omap34xx_usb_host_hs_hwmod,
+	&omap34xx_usbhs_ohci_hwmod,
+	&omap34xx_usbhs_ehci_hwmod,
+	&omap34xx_usb_tll_hs_hwmod,
+
 	NULL,
 };
 
-- 
1.6.0.4

[PATCH 2/5 v7] arm: omap: usb: ehci and ohci hwmod structures for omap3

[Keshava Munegowda]

Following 4 hwmod structure are added:
UHH hwmod of usbhs with uhh base address and functional clock,
EHCI hwmod with irq and base address,
OHCI hwmod with irq and base address,
TLL hwmod of usbhs with the TLL base address and irq.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c |  282 ++++++++++++++++++++++++++++
 1 files changed, 282 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 59fdb9f..a5531f7 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -84,6 +84,10 @@ static struct omap_hwmod omap3xxx_mcbsp4_hwmod;
 static struct omap_hwmod omap3xxx_mcbsp5_hwmod;
 static struct omap_hwmod omap3xxx_mcbsp2_sidetone_hwmod;
 static struct omap_hwmod omap3xxx_mcbsp3_sidetone_hwmod;
+static struct omap_hwmod omap34xx_usb_host_hs_hwmod;
+static struct omap_hwmod omap34xx_usbhs_ohci_hwmod;
+static struct omap_hwmod omap34xx_usbhs_ehci_hwmod;
+static struct omap_hwmod omap34xx_usb_tll_hs_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = {
@@ -3196,6 +3200,279 @@ static struct omap_hwmod omap3xxx_mmc3_hwmod = {
 	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
 };
 
+/*
+ * 'usb_host_hs' class
+ * high-speed multi-port usb host controller
+ */
+static struct omap_hwmod_ocp_if omap34xx_usb_host_hs__l3_main_2 = {
+	.master		= &omap34xx_usb_host_hs_hwmod,
+	.slave		= &omap3xxx_l3_main_hwmod,
+	.clk		= "core_l3_ick",
+	.user		= OCP_USER_MPU,
+};
+
+static struct omap_hwmod_class_sysconfig omap34xx_usb_host_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE |
+				SYSC_HAS_SOFTRESET),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
+			   MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap34xx_usb_host_hs_hwmod_class = {
+	.name = "usbhs_uhh",
+	.sysc = &omap34xx_usb_host_hs_sysc,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usb_host_hs_masters[] = {
+	&omap34xx_usb_host_hs__l3_main_2,
+};
+
+static struct omap_hwmod_addr_space omap34xx_usb_host_hs_addrs[] = {
+	{
+		.name		= "uhh",
+		.pa_start	= 0x48064000,
+		.pa_end		= 0x480643ff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usb_host_hs = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usb_host_hs_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usb_host_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if omap34xx_f128m_cfg__usb_host_hs = {
+	.clk		= "usbhost_120m_fck",
+	.user		= OCP_USER_MPU,
+	.flags		= OCPIF_SWSUP_IDLE,
+};
+
+static struct omap_hwmod_ocp_if omap34xx_f48m_cfg__usb_host_hs = {
+	.clk		= "usbhost_48m_fck",
+	.user		= OCP_USER_MPU,
+	.flags		= OCPIF_SWSUP_IDLE,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usb_host_hs_slaves[] = {
+	&omap34xx_l4_cfg__usb_host_hs,
+	&omap34xx_f128m_cfg__usb_host_hs,
+	&omap34xx_f48m_cfg__usb_host_hs,
+};
+
+static struct omap_hwmod omap34xx_usb_host_hs_hwmod = {
+	.name		= "usbhs_uhh",
+	.class		= &omap34xx_usb_host_hs_hwmod_class,
+	.main_clk	= "usbhost_ick",
+	.prcm = {
+		.omap2 = {
+			.module_offs = OMAP3430ES2_USBHOST_MOD,
+			.prcm_reg_id = 1,
+			.module_bit = 0,
+			.idlest_reg_id = 1,
+			.idlest_idle_bit = 1,
+			.idlest_stdby_bit = 0,
+		},
+	},
+	.slaves		= omap34xx_usb_host_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usb_host_hs_slaves),
+	.masters	= omap34xx_usb_host_hs_masters,
+	.masters_cnt	= ARRAY_SIZE(omap34xx_usb_host_hs_masters),
+	.flags		= HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* 'usbhs_ohci' class  */
+static struct omap_hwmod_ocp_if omap34xx_usbhs_ohci__l3_main_2 = {
+	.master		= &omap34xx_usbhs_ohci_hwmod,
+	.slave		= &omap3xxx_l3_main_hwmod,
+	.clk		= "core_l3_ick",
+	.user		= OCP_USER_MPU,
+};
+
+static struct omap_hwmod_class omap34xx_usbhs_ohci_hwmod_class = {
+	.name = "usbhs_ohci",
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ohci_masters[] = {
+	&omap34xx_usbhs_ohci__l3_main_2,
+};
+
+static struct omap_hwmod_irq_info omap34xx_usbhs_ohci_irqs[] = {
+	{ .name = "ohci-irq", .irq = 76 },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap34xx_usbhs_ohci_addrs[] = {
+	{
+		.name		= "ohci",
+		.pa_start	= 0x48064400,
+		.pa_end		= 0x480647FF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usbhs_ohci = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usbhs_ohci_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usbhs_ohci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ohci_slaves[] = {
+	&omap34xx_l4_cfg__usbhs_ohci,
+};
+
+static struct omap_hwmod omap34xx_usbhs_ohci_hwmod = {
+	.name		= "usbhs_ohci",
+	.class		= &omap34xx_usbhs_ohci_hwmod_class,
+	.mpu_irqs	= omap34xx_usbhs_ohci_irqs,
+	.slaves		= omap34xx_usbhs_ohci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usbhs_ohci_slaves),
+	.masters	= omap34xx_usbhs_ohci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap34xx_usbhs_ohci_masters),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* 'usbhs_ehci' class  */
+static struct omap_hwmod_ocp_if omap34xx_usbhs_ehci__l3_main_2 = {
+	.master		= &omap34xx_usbhs_ehci_hwmod,
+	.slave		= &omap3xxx_l3_main_hwmod,
+	.clk		= "core_l3_ick",
+	.user		= OCP_USER_MPU,
+};
+
+static struct omap_hwmod_class omap34xx_usbhs_ehci_hwmod_class = {
+	.name = "usbhs_ehci",
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ehci_masters[] = {
+	&omap34xx_usbhs_ehci__l3_main_2,
+};
+
+static struct omap_hwmod_irq_info omap34xx_usbhs_ehci_irqs[] = {
+	{ .name = "ehci-irq", .irq = 77 },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap34xx_usbhs_ehci_addrs[] = {
+	{
+		.name		= "ehci",
+		.pa_start	= 0x48064800,
+		.pa_end		= 0x48064CFF,
+		.flags		= ADDR_MAP_ON_INIT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usbhs_ehci = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usbhs_ehci_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usbhs_ehci_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usbhs_ehci_slaves[] = {
+	&omap34xx_l4_cfg__usbhs_ehci,
+};
+
+static struct omap_hwmod omap34xx_usbhs_ehci_hwmod = {
+	.name		= "usbhs_ehci",
+	.class		= &omap34xx_usbhs_ehci_hwmod_class,
+	.mpu_irqs	= omap34xx_usbhs_ehci_irqs,
+	.slaves		= omap34xx_usbhs_ehci_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usbhs_ehci_slaves),
+	.masters	= omap34xx_usbhs_ehci_masters,
+	.masters_cnt	= ARRAY_SIZE(omap34xx_usbhs_ehci_masters),
+	.flags		= HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/*
+ * 'usb_tll_hs' class
+ * usb_tll_hs module is the adapter on the usb_host_hs ports
+ */
+static struct omap_hwmod_class_sysconfig omap34xx_usb_tll_hs_sysc = {
+	.rev_offs	= 0x0000,
+	.sysc_offs	= 0x0010,
+	.syss_offs	= 0x0014,
+	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_SIDLEMODE |
+				SYSC_HAS_SOFTRESET | SYSC_HAS_ENAWAKEUP	|
+				SYSC_HAS_CLOCKACTIVITY),
+	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+	.sysc_fields	= &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap34xx_usb_tll_hs_hwmod_class = {
+	.name = "usbhs_tll",
+	.sysc = &omap34xx_usb_tll_hs_sysc,
+};
+
+static struct omap_hwmod_irq_info omap34xx_usb_tll_hs_irqs[] = {
+	{ .name = "tll-irq", .irq = 78 },
+	{ .irq = -1 } /* Terminating IRQ */
+};
+
+static struct omap_hwmod_addr_space omap34xx_usb_tll_hs_addrs[] = {
+	{
+		.name		= "tll",
+		.pa_start	= 0x48062000,
+		.pa_end		= 0x48062fff,
+		.flags		= ADDR_TYPE_RT
+	},
+	{} /* Terminating Entry */
+};
+
+static struct omap_hwmod_ocp_if omap34xx_f_cfg__usb_tll_hs = {
+	.clk		= "usbtll_fck",
+	.user		= OCP_USER_MPU,
+	.flags		= OCPIF_SWSUP_IDLE,
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_cfg__usb_tll_hs = {
+	.master		= &omap3xxx_l4_core_hwmod,
+	.slave		= &omap34xx_usb_tll_hs_hwmod,
+	.clk		= "l4_ick",
+	.addr		= omap34xx_usb_tll_hs_addrs,
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_usb_tll_hs_slaves[] = {
+	&omap34xx_l4_cfg__usb_tll_hs,
+	&omap34xx_f_cfg__usb_tll_hs,
+};
+
+static struct omap_hwmod omap34xx_usb_tll_hs_hwmod = {
+	.name		= "usbhs_tll",
+	.class		= &omap34xx_usb_tll_hs_hwmod_class,
+	.mpu_irqs	= omap34xx_usb_tll_hs_irqs,
+	.main_clk	= "usbtll_ick",
+	.prcm = {
+		.omap2 = {
+			.module_offs = CORE_MOD,
+			.prcm_reg_id = 3,
+			.module_bit = 2,
+			.idlest_reg_id = 3,
+			.idlest_idle_bit = 2,
+		},
+	},
+	.slaves		= omap34xx_usb_tll_hs_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap34xx_usb_tll_hs_slaves),
+	.flags		= HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
 static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
 	&omap3xxx_l3_main_hwmod,
 	&omap3xxx_l4_core_hwmod,
@@ -3278,6 +3555,11 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
 	/* usbotg for am35x */
 	&am35xx_usbhsotg_hwmod,
 
+	&omap34xx_usb_host_hs_hwmod,
+	&omap34xx_usbhs_ohci_hwmod,
+	&omap34xx_usbhs_ehci_hwmod,
+	&omap34xx_usb_tll_hs_hwmod,
+
 	NULL,
 };
 
-- 
1.6.0.4

[PATCH 3/5 v7] arm: omap: usb: register hwmods of usbhs

[Keshava Munegowda]

The hwmod structure of uhh, ohci, ehci and tll are
retrieved and registered with omap device

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/usb-host.c |  114 +++++++++++++++++----------------------
 1 files changed, 50 insertions(+), 64 deletions(-)

diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
index 89ae298..9c37db9 100644
--- a/arch/arm/mach-omap2/usb-host.c
+++ b/arch/arm/mach-omap2/usb-host.c
@@ -28,51 +28,30 @@
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 #include <plat/usb.h>
+#include <plat/omap_device.h>
 
 #include "mux.h"
 
 #ifdef CONFIG_MFD_OMAP_USB_HOST
 
-#define OMAP_USBHS_DEVICE	"usbhs-omap"
-
-static struct resource usbhs_resources[] = {
-	{
-		.name	= "uhh",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "tll",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "ehci",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "ehci-irq",
-		.flags	= IORESOURCE_IRQ,
-	},
-	{
-		.name	= "ohci",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "ohci-irq",
-		.flags	= IORESOURCE_IRQ,
-	}
-};
-
-static struct platform_device usbhs_device = {
-	.name		= OMAP_USBHS_DEVICE,
-	.id		= 0,
-	.num_resources	= ARRAY_SIZE(usbhs_resources),
-	.resource	= usbhs_resources,
-};
+#define OMAP_USBHS_DEVICE	"usbhs_omap"
+#define	USBHS_UHH_HWMODNAME	"usbhs_uhh"
+#define	USBHS_OHCI_HWMODNAME	"usbhs_ohci"
+#define USBHS_EHCI_HWMODNAME	"usbhs_ehci"
+#define USBHS_TLL_HWMODNAME	"usbhs_tll"
 
 static struct usbhs_omap_platform_data		usbhs_data;
 static struct ehci_hcd_omap_platform_data	ehci_data;
 static struct ohci_hcd_omap_platform_data	ohci_data;
 
+static struct omap_device_pm_latency omap_uhhtll_latency[] = {
+	  {
+		.deactivate_func = omap_device_idle_hwmods,
+		.activate_func	 = omap_device_enable_hwmods,
+		.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+	  },
+};
+
 /* MUX settings for EHCI pins */
 /*
  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
@@ -508,7 +487,10 @@ static void setup_4430ohci_io_mux(const enum usbhs_omap_port_mode *port_mode)
 
 void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
 {
-	int	i;
+	struct omap_hwmod	*oh[4];
+	struct omap_device	*od;
+	int			bus_id = -1;
+	int			i;
 
 	for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
 		usbhs_data.port_mode[i] = pdata->port_mode[i];
@@ -523,44 +505,48 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
 	usbhs_data.ohci_data = &ohci_data;
 
 	if (cpu_is_omap34xx()) {
-		usbhs_resources[0].start = OMAP34XX_UHH_CONFIG_BASE;
-		usbhs_resources[0].end = OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1;
-		usbhs_resources[1].start = OMAP34XX_USBTLL_BASE;
-		usbhs_resources[1].end = OMAP34XX_USBTLL_BASE + SZ_4K - 1;
-		usbhs_resources[2].start	= OMAP34XX_EHCI_BASE;
-		usbhs_resources[2].end	= OMAP34XX_EHCI_BASE + SZ_1K - 1;
-		usbhs_resources[3].start = INT_34XX_EHCI_IRQ;
-		usbhs_resources[4].start	= OMAP34XX_OHCI_BASE;
-		usbhs_resources[4].end	= OMAP34XX_OHCI_BASE + SZ_1K - 1;
-		usbhs_resources[5].start = INT_34XX_OHCI_IRQ;
 		setup_ehci_io_mux(pdata->port_mode);
 		setup_ohci_io_mux(pdata->port_mode);
 	} else if (cpu_is_omap44xx()) {
-		usbhs_resources[0].start = OMAP44XX_UHH_CONFIG_BASE;
-		usbhs_resources[0].end = OMAP44XX_UHH_CONFIG_BASE + SZ_1K - 1;
-		usbhs_resources[1].start = OMAP44XX_USBTLL_BASE;
-		usbhs_resources[1].end = OMAP44XX_USBTLL_BASE + SZ_4K - 1;
-		usbhs_resources[2].start = OMAP44XX_HSUSB_EHCI_BASE;
-		usbhs_resources[2].end = OMAP44XX_HSUSB_EHCI_BASE + SZ_1K - 1;
-		usbhs_resources[3].start = OMAP44XX_IRQ_EHCI;
-		usbhs_resources[4].start = OMAP44XX_HSUSB_OHCI_BASE;
-		usbhs_resources[4].end = OMAP44XX_HSUSB_OHCI_BASE + SZ_1K - 1;
-		usbhs_resources[5].start = OMAP44XX_IRQ_OHCI;
 		setup_4430ehci_io_mux(pdata->port_mode);
 		setup_4430ohci_io_mux(pdata->port_mode);
 	}
 
-	if (platform_device_add_data(&usbhs_device,
-				&usbhs_data, sizeof(usbhs_data)) < 0) {
-		printk(KERN_ERR "USBHS platform_device_add_data failed\n");
-		goto init_end;
+	oh[0] = omap_hwmod_lookup(USBHS_UHH_HWMODNAME);
+	if (!oh[0]) {
+		pr_err("Could not look up %s\n", USBHS_UHH_HWMODNAME);
+		return;
+	}
+
+	oh[1] = omap_hwmod_lookup(USBHS_OHCI_HWMODNAME);
+	if (!oh[1]) {
+		pr_err("Could not look up %s\n", USBHS_UHH_HWMODNAME);
+		return;
 	}
 
-	if (platform_device_register(&usbhs_device) < 0)
-		printk(KERN_ERR "USBHS platform_device_register failed\n");
+	oh[2] = omap_hwmod_lookup(USBHS_EHCI_HWMODNAME);
+	if (!oh[2]) {
+		pr_err("Could not look up %s\n", USBHS_TLL_HWMODNAME);
+		return;
+	}
 
-init_end:
-	return;
+	oh[3] = omap_hwmod_lookup(USBHS_TLL_HWMODNAME);
+	if (!oh[3]) {
+		pr_err("Could not look up %s\n", USBHS_TLL_HWMODNAME);
+		return;
+	}
+
+	od = omap_device_build_ss(OMAP_USBHS_DEVICE, bus_id, oh, 4,
+				(void *)&usbhs_data, sizeof(usbhs_data),
+				omap_uhhtll_latency,
+				ARRAY_SIZE(omap_uhhtll_latency), false);
+
+	if (IS_ERR(od)) {
+		pr_err("Could not build hwmod devices %s, %s, %s, %s\n",
+			USBHS_UHH_HWMODNAME, USBHS_OHCI_HWMODNAME,
+			USBHS_EHCI_HWMODNAME, USBHS_TLL_HWMODNAME);
+		return;
+	}
 }
 
 #else
-- 
1.6.0.4

[PATCH 3/5 v7] arm: omap: usb: register hwmods of usbhs

[Keshava Munegowda]

The hwmod structure of uhh, ohci, ehci and tll are
retrieved and registered with omap device

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/usb-host.c |  114 +++++++++++++++++----------------------
 1 files changed, 50 insertions(+), 64 deletions(-)

diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
index 89ae298..9c37db9 100644
--- a/arch/arm/mach-omap2/usb-host.c
+++ b/arch/arm/mach-omap2/usb-host.c
@@ -28,51 +28,30 @@
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 #include <plat/usb.h>
+#include <plat/omap_device.h>
 
 #include "mux.h"
 
 #ifdef CONFIG_MFD_OMAP_USB_HOST
 
-#define OMAP_USBHS_DEVICE	"usbhs-omap"
-
-static struct resource usbhs_resources[] = {
-	{
-		.name	= "uhh",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "tll",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "ehci",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "ehci-irq",
-		.flags	= IORESOURCE_IRQ,
-	},
-	{
-		.name	= "ohci",
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "ohci-irq",
-		.flags	= IORESOURCE_IRQ,
-	}
-};
-
-static struct platform_device usbhs_device = {
-	.name		= OMAP_USBHS_DEVICE,
-	.id		= 0,
-	.num_resources	= ARRAY_SIZE(usbhs_resources),
-	.resource	= usbhs_resources,
-};
+#define OMAP_USBHS_DEVICE	"usbhs_omap"
+#define	USBHS_UHH_HWMODNAME	"usbhs_uhh"
+#define	USBHS_OHCI_HWMODNAME	"usbhs_ohci"
+#define USBHS_EHCI_HWMODNAME	"usbhs_ehci"
+#define USBHS_TLL_HWMODNAME	"usbhs_tll"
 
 static struct usbhs_omap_platform_data		usbhs_data;
 static struct ehci_hcd_omap_platform_data	ehci_data;
 static struct ohci_hcd_omap_platform_data	ohci_data;
 
+static struct omap_device_pm_latency omap_uhhtll_latency[] = {
+	  {
+		.deactivate_func = omap_device_idle_hwmods,
+		.activate_func	 = omap_device_enable_hwmods,
+		.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+	  },
+};
+
 /* MUX settings for EHCI pins */
 /*
  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
@@ -508,7 +487,10 @@ static void setup_4430ohci_io_mux(const enum usbhs_omap_port_mode *port_mode)
 
 void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
 {
-	int	i;
+	struct omap_hwmod	*oh[4];
+	struct omap_device	*od;
+	int			bus_id = -1;
+	int			i;
 
 	for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
 		usbhs_data.port_mode[i] = pdata->port_mode[i];
@@ -523,44 +505,48 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
 	usbhs_data.ohci_data = &ohci_data;
 
 	if (cpu_is_omap34xx()) {
-		usbhs_resources[0].start = OMAP34XX_UHH_CONFIG_BASE;
-		usbhs_resources[0].end = OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1;
-		usbhs_resources[1].start = OMAP34XX_USBTLL_BASE;
-		usbhs_resources[1].end = OMAP34XX_USBTLL_BASE + SZ_4K - 1;
-		usbhs_resources[2].start	= OMAP34XX_EHCI_BASE;
-		usbhs_resources[2].end	= OMAP34XX_EHCI_BASE + SZ_1K - 1;
-		usbhs_resources[3].start = INT_34XX_EHCI_IRQ;
-		usbhs_resources[4].start	= OMAP34XX_OHCI_BASE;
-		usbhs_resources[4].end	= OMAP34XX_OHCI_BASE + SZ_1K - 1;
-		usbhs_resources[5].start = INT_34XX_OHCI_IRQ;
 		setup_ehci_io_mux(pdata->port_mode);
 		setup_ohci_io_mux(pdata->port_mode);
 	} else if (cpu_is_omap44xx()) {
-		usbhs_resources[0].start = OMAP44XX_UHH_CONFIG_BASE;
-		usbhs_resources[0].end = OMAP44XX_UHH_CONFIG_BASE + SZ_1K - 1;
-		usbhs_resources[1].start = OMAP44XX_USBTLL_BASE;
-		usbhs_resources[1].end = OMAP44XX_USBTLL_BASE + SZ_4K - 1;
-		usbhs_resources[2].start = OMAP44XX_HSUSB_EHCI_BASE;
-		usbhs_resources[2].end = OMAP44XX_HSUSB_EHCI_BASE + SZ_1K - 1;
-		usbhs_resources[3].start = OMAP44XX_IRQ_EHCI;
-		usbhs_resources[4].start = OMAP44XX_HSUSB_OHCI_BASE;
-		usbhs_resources[4].end = OMAP44XX_HSUSB_OHCI_BASE + SZ_1K - 1;
-		usbhs_resources[5].start = OMAP44XX_IRQ_OHCI;
 		setup_4430ehci_io_mux(pdata->port_mode);
 		setup_4430ohci_io_mux(pdata->port_mode);
 	}
 
-	if (platform_device_add_data(&usbhs_device,
-				&usbhs_data, sizeof(usbhs_data)) < 0) {
-		printk(KERN_ERR "USBHS platform_device_add_data failed\n");
-		goto init_end;
+	oh[0] = omap_hwmod_lookup(USBHS_UHH_HWMODNAME);
+	if (!oh[0]) {
+		pr_err("Could not look up %s\n", USBHS_UHH_HWMODNAME);
+		return;
+	}
+
+	oh[1] = omap_hwmod_lookup(USBHS_OHCI_HWMODNAME);
+	if (!oh[1]) {
+		pr_err("Could not look up %s\n", USBHS_UHH_HWMODNAME);
+		return;
 	}
 
-	if (platform_device_register(&usbhs_device) < 0)
-		printk(KERN_ERR "USBHS platform_device_register failed\n");
+	oh[2] = omap_hwmod_lookup(USBHS_EHCI_HWMODNAME);
+	if (!oh[2]) {
+		pr_err("Could not look up %s\n", USBHS_TLL_HWMODNAME);
+		return;
+	}
 
-init_end:
-	return;
+	oh[3] = omap_hwmod_lookup(USBHS_TLL_HWMODNAME);
+	if (!oh[3]) {
+		pr_err("Could not look up %s\n", USBHS_TLL_HWMODNAME);
+		return;
+	}
+
+	od = omap_device_build_ss(OMAP_USBHS_DEVICE, bus_id, oh, 4,
+				(void *)&usbhs_data, sizeof(usbhs_data),
+				omap_uhhtll_latency,
+				ARRAY_SIZE(omap_uhhtll_latency), false);
+
+	if (IS_ERR(od)) {
+		pr_err("Could not build hwmod devices %s, %s, %s, %s\n",
+			USBHS_UHH_HWMODNAME, USBHS_OHCI_HWMODNAME,
+			USBHS_EHCI_HWMODNAME, USBHS_TLL_HWMODNAME);
+		return;
+	}
 }
 
 #else
-- 
1.6.0.4

[PATCH 4/5 v7] arm: omap: usb: device name change for the clk names of usbhs

[Keshava Munegowda]

From: Keshava Munegowda <Keshava_mgowda@ti.com>

device name usbhs clocks are changed from
usbhs-omap.0 to usbhs_omap; this is because
in the hwmod registration the device name is set
as usbhs_omap; The redudant clock nodes are removed.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/clock3xxx_data.c |   26 ++++++++++++--------------
 arch/arm/mach-omap2/clock44xx_data.c |   10 +++++-----
 drivers/mfd/omap-usb-host.c          |    2 +-
 3 files changed, 18 insertions(+), 20 deletions(-)

diff --git a/arch/arm/mach-omap2/clock3xxx_data.c b/arch/arm/mach-omap2/clock3xxx_data.c
index ffd55b1..63a822f 100644
--- a/arch/arm/mach-omap2/clock3xxx_data.c
+++ b/arch/arm/mach-omap2/clock3xxx_data.c
@@ -3285,7 +3285,7 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"cpefuse_fck",	&cpefuse_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"ts_fck",	&ts_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"usbtll_fck",	&usbtll_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"usbtll_fck",	&usbtll_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
+	CLK("usbhs_omap",	"usbtll_fck",	&usbtll_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK("omap-mcbsp.1",	"prcm_fck",	&core_96m_fck,	CK_3XXX),
 	CLK("omap-mcbsp.5",	"prcm_fck",	&core_96m_fck,	CK_3XXX),
 	CLK(NULL,	"core_96m_fck",	&core_96m_fck,	CK_3XXX),
@@ -3321,7 +3321,7 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"pka_ick",	&pka_ick,	CK_34XX | CK_36XX),
 	CLK(NULL,	"core_l4_ick",	&core_l4_ick,	CK_3XXX),
 	CLK(NULL,	"usbtll_ick",	&usbtll_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"usbtll_ick",	&usbtll_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
+	CLK("usbhs_omap",	"usbtll_ick",	&usbtll_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK("omap_hsmmc.2",	"ick",	&mmchs3_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"icr_ick",	&icr_ick,	CK_34XX | CK_36XX),
 	CLK("omap-aes",	"ick",	&aes2_ick,	CK_34XX | CK_36XX),
@@ -3367,20 +3367,18 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"cam_ick",	&cam_ick,	CK_34XX | CK_36XX),
 	CLK(NULL,	"csi2_96m_fck",	&csi2_96m_fck,	CK_34XX | CK_36XX),
 	CLK(NULL,	"usbhost_120m_fck", &usbhost_120m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"hs_fck", &usbhost_120m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"usbhost_48m_fck", &usbhost_48m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"fs_fck", &usbhost_48m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"usbhost_ick",	&usbhost_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"usbhost_ick",	&usbhost_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"utmi_p1_gfclk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"utmi_p2_gfclk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"xclk60mhsp1_ck",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"xclk60mhsp2_ck",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_host_hs_utmi_p1_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_host_hs_utmi_p2_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_tll_hs_usb_ch0_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_tll_hs_usb_ch1_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"init_60m_fclk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usbhost_ick",	&usbhost_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
+	CLK("usbhs_omap",	"utmi_p1_gfclk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"utmi_p2_gfclk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"xclk60mhsp1_ck",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"xclk60mhsp2_ck",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_host_hs_utmi_p1_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_host_hs_utmi_p2_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_tll_hs_usb_ch0_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_tll_hs_usb_ch1_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"init_60m_fclk",	&dummy_ck,	CK_3XXX),
 	CLK(NULL,	"usim_fck",	&usim_fck,	CK_3430ES2PLUS | CK_36XX),
 	CLK(NULL,	"gpt1_fck",	&gpt1_fck,	CK_3XXX),
 	CLK(NULL,	"wkup_32k_fck",	&wkup_32k_fck,	CK_3XXX),
diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c
index 2af0e3f..088977a 100644
--- a/arch/arm/mach-omap2/clock44xx_data.c
+++ b/arch/arm/mach-omap2/clock44xx_data.c
@@ -3281,7 +3281,7 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"uart2_fck",			&uart2_fck,	CK_443X),
 	CLK(NULL,	"uart3_fck",			&uart3_fck,	CK_443X),
 	CLK(NULL,	"uart4_fck",			&uart4_fck,	CK_443X),
-	CLK("usbhs-omap.0",	"fs_fck",		&usb_host_fs_fck,	CK_443X),
+	CLK("usbhs_omap",	"fs_fck",		&usb_host_fs_fck,	CK_443X),
 	CLK(NULL,	"utmi_p1_gfclk",		&utmi_p1_gfclk,	CK_443X),
 	CLK(NULL,	"usb_host_hs_utmi_p1_clk",	&usb_host_hs_utmi_p1_clk,	CK_443X),
 	CLK(NULL,	"utmi_p2_gfclk",		&utmi_p2_gfclk,	CK_443X),
@@ -3292,7 +3292,7 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"usb_host_hs_hsic60m_p2_clk",	&usb_host_hs_hsic60m_p2_clk,	CK_443X),
 	CLK(NULL,	"usb_host_hs_hsic480m_p2_clk",	&usb_host_hs_hsic480m_p2_clk,	CK_443X),
 	CLK(NULL,	"usb_host_hs_func48mclk",	&usb_host_hs_func48mclk,	CK_443X),
-	CLK("usbhs-omap.0",	"hs_fck",		&usb_host_hs_fck,	CK_443X),
+	CLK("usbhs_omap",	"hs_fck",		&usb_host_hs_fck,	CK_443X),
 	CLK(NULL,	"otg_60m_gfclk",		&otg_60m_gfclk,	CK_443X),
 	CLK(NULL,	"usb_otg_hs_xclk",		&usb_otg_hs_xclk,	CK_443X),
 	CLK("musb-omap2430",	"ick",				&usb_otg_hs_ick,	CK_443X),
@@ -3300,7 +3300,7 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"usb_tll_hs_usb_ch2_clk",	&usb_tll_hs_usb_ch2_clk,	CK_443X),
 	CLK(NULL,	"usb_tll_hs_usb_ch0_clk",	&usb_tll_hs_usb_ch0_clk,	CK_443X),
 	CLK(NULL,	"usb_tll_hs_usb_ch1_clk",	&usb_tll_hs_usb_ch1_clk,	CK_443X),
-	CLK("usbhs-omap.0",	"usbtll_ick",		&usb_tll_hs_ick,	CK_443X),
+	CLK("usbhs_omap",	"usbtll_ick",		&usb_tll_hs_ick,	CK_443X),
 	CLK(NULL,	"usim_ck",			&usim_ck,	CK_443X),
 	CLK(NULL,	"usim_fclk",			&usim_fclk,	CK_443X),
 	CLK(NULL,	"usim_fck",			&usim_fck,	CK_443X),
@@ -3360,8 +3360,8 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"uart2_ick",			&dummy_ck,	CK_443X),
 	CLK(NULL,	"uart3_ick",			&dummy_ck,	CK_443X),
 	CLK(NULL,	"uart4_ick",			&dummy_ck,	CK_443X),
-	CLK("usbhs-omap.0",	"usbhost_ick",		&dummy_ck,		CK_443X),
-	CLK("usbhs-omap.0",	"usbtll_fck",		&dummy_ck,	CK_443X),
+	CLK("usbhs_omap",	"usbhost_ick",		&dummy_ck,		CK_443X),
+	CLK("usbhs_omap",	"usbtll_fck",		&dummy_ck,	CK_443X),
 	CLK("omap_wdt",	"ick",				&dummy_ck,	CK_443X),
 };
 
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 8db205e..9c2da29 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -27,7 +27,7 @@
 #include <linux/gpio.h>
 #include <plat/usb.h>
 
-#define USBHS_DRIVER_NAME	"usbhs-omap"
+#define USBHS_DRIVER_NAME	"usbhs_omap"
 #define OMAP_EHCI_DEVICE	"ehci-omap"
 #define OMAP_OHCI_DEVICE	"ohci-omap3"
 
-- 
1.6.0.4

[PATCH 4/5 v7] arm: omap: usb: device name change for the clk names of usbhs

[Keshava Munegowda]

From: Keshava Munegowda <Keshava_mgowda@ti.com>

device name usbhs clocks are changed from
usbhs-omap.0 to usbhs_omap; this is because
in the hwmod registration the device name is set
as usbhs_omap; The redudant clock nodes are removed.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/mach-omap2/clock3xxx_data.c |   26 ++++++++++++--------------
 arch/arm/mach-omap2/clock44xx_data.c |   10 +++++-----
 drivers/mfd/omap-usb-host.c          |    2 +-
 3 files changed, 18 insertions(+), 20 deletions(-)

diff --git a/arch/arm/mach-omap2/clock3xxx_data.c b/arch/arm/mach-omap2/clock3xxx_data.c
index ffd55b1..63a822f 100644
--- a/arch/arm/mach-omap2/clock3xxx_data.c
+++ b/arch/arm/mach-omap2/clock3xxx_data.c
@@ -3285,7 +3285,7 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"cpefuse_fck",	&cpefuse_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"ts_fck",	&ts_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"usbtll_fck",	&usbtll_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"usbtll_fck",	&usbtll_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
+	CLK("usbhs_omap",	"usbtll_fck",	&usbtll_fck,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK("omap-mcbsp.1",	"prcm_fck",	&core_96m_fck,	CK_3XXX),
 	CLK("omap-mcbsp.5",	"prcm_fck",	&core_96m_fck,	CK_3XXX),
 	CLK(NULL,	"core_96m_fck",	&core_96m_fck,	CK_3XXX),
@@ -3321,7 +3321,7 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"pka_ick",	&pka_ick,	CK_34XX | CK_36XX),
 	CLK(NULL,	"core_l4_ick",	&core_l4_ick,	CK_3XXX),
 	CLK(NULL,	"usbtll_ick",	&usbtll_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"usbtll_ick",	&usbtll_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
+	CLK("usbhs_omap",	"usbtll_ick",	&usbtll_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK("omap_hsmmc.2",	"ick",	&mmchs3_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"icr_ick",	&icr_ick,	CK_34XX | CK_36XX),
 	CLK("omap-aes",	"ick",	&aes2_ick,	CK_34XX | CK_36XX),
@@ -3367,20 +3367,18 @@ static struct omap_clk omap3xxx_clks[] = {
 	CLK(NULL,	"cam_ick",	&cam_ick,	CK_34XX | CK_36XX),
 	CLK(NULL,	"csi2_96m_fck",	&csi2_96m_fck,	CK_34XX | CK_36XX),
 	CLK(NULL,	"usbhost_120m_fck", &usbhost_120m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"hs_fck", &usbhost_120m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"usbhost_48m_fck", &usbhost_48m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"fs_fck", &usbhost_48m_fck, CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
 	CLK(NULL,	"usbhost_ick",	&usbhost_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"usbhost_ick",	&usbhost_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
-	CLK("usbhs-omap.0",	"utmi_p1_gfclk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"utmi_p2_gfclk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"xclk60mhsp1_ck",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"xclk60mhsp2_ck",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_host_hs_utmi_p1_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_host_hs_utmi_p2_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_tll_hs_usb_ch0_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"usb_tll_hs_usb_ch1_clk",	&dummy_ck,	CK_3XXX),
-	CLK("usbhs-omap.0",	"init_60m_fclk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usbhost_ick",	&usbhost_ick,	CK_3430ES2PLUS | CK_AM35XX | CK_36XX),
+	CLK("usbhs_omap",	"utmi_p1_gfclk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"utmi_p2_gfclk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"xclk60mhsp1_ck",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"xclk60mhsp2_ck",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_host_hs_utmi_p1_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_host_hs_utmi_p2_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_tll_hs_usb_ch0_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"usb_tll_hs_usb_ch1_clk",	&dummy_ck,	CK_3XXX),
+	CLK("usbhs_omap",	"init_60m_fclk",	&dummy_ck,	CK_3XXX),
 	CLK(NULL,	"usim_fck",	&usim_fck,	CK_3430ES2PLUS | CK_36XX),
 	CLK(NULL,	"gpt1_fck",	&gpt1_fck,	CK_3XXX),
 	CLK(NULL,	"wkup_32k_fck",	&wkup_32k_fck,	CK_3XXX),
diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c
index 2af0e3f..088977a 100644
--- a/arch/arm/mach-omap2/clock44xx_data.c
+++ b/arch/arm/mach-omap2/clock44xx_data.c
@@ -3281,7 +3281,7 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"uart2_fck",			&uart2_fck,	CK_443X),
 	CLK(NULL,	"uart3_fck",			&uart3_fck,	CK_443X),
 	CLK(NULL,	"uart4_fck",			&uart4_fck,	CK_443X),
-	CLK("usbhs-omap.0",	"fs_fck",		&usb_host_fs_fck,	CK_443X),
+	CLK("usbhs_omap",	"fs_fck",		&usb_host_fs_fck,	CK_443X),
 	CLK(NULL,	"utmi_p1_gfclk",		&utmi_p1_gfclk,	CK_443X),
 	CLK(NULL,	"usb_host_hs_utmi_p1_clk",	&usb_host_hs_utmi_p1_clk,	CK_443X),
 	CLK(NULL,	"utmi_p2_gfclk",		&utmi_p2_gfclk,	CK_443X),
@@ -3292,7 +3292,7 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"usb_host_hs_hsic60m_p2_clk",	&usb_host_hs_hsic60m_p2_clk,	CK_443X),
 	CLK(NULL,	"usb_host_hs_hsic480m_p2_clk",	&usb_host_hs_hsic480m_p2_clk,	CK_443X),
 	CLK(NULL,	"usb_host_hs_func48mclk",	&usb_host_hs_func48mclk,	CK_443X),
-	CLK("usbhs-omap.0",	"hs_fck",		&usb_host_hs_fck,	CK_443X),
+	CLK("usbhs_omap",	"hs_fck",		&usb_host_hs_fck,	CK_443X),
 	CLK(NULL,	"otg_60m_gfclk",		&otg_60m_gfclk,	CK_443X),
 	CLK(NULL,	"usb_otg_hs_xclk",		&usb_otg_hs_xclk,	CK_443X),
 	CLK("musb-omap2430",	"ick",				&usb_otg_hs_ick,	CK_443X),
@@ -3300,7 +3300,7 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"usb_tll_hs_usb_ch2_clk",	&usb_tll_hs_usb_ch2_clk,	CK_443X),
 	CLK(NULL,	"usb_tll_hs_usb_ch0_clk",	&usb_tll_hs_usb_ch0_clk,	CK_443X),
 	CLK(NULL,	"usb_tll_hs_usb_ch1_clk",	&usb_tll_hs_usb_ch1_clk,	CK_443X),
-	CLK("usbhs-omap.0",	"usbtll_ick",		&usb_tll_hs_ick,	CK_443X),
+	CLK("usbhs_omap",	"usbtll_ick",		&usb_tll_hs_ick,	CK_443X),
 	CLK(NULL,	"usim_ck",			&usim_ck,	CK_443X),
 	CLK(NULL,	"usim_fclk",			&usim_fclk,	CK_443X),
 	CLK(NULL,	"usim_fck",			&usim_fck,	CK_443X),
@@ -3360,8 +3360,8 @@ static struct omap_clk omap44xx_clks[] = {
 	CLK(NULL,	"uart2_ick",			&dummy_ck,	CK_443X),
 	CLK(NULL,	"uart3_ick",			&dummy_ck,	CK_443X),
 	CLK(NULL,	"uart4_ick",			&dummy_ck,	CK_443X),
-	CLK("usbhs-omap.0",	"usbhost_ick",		&dummy_ck,		CK_443X),
-	CLK("usbhs-omap.0",	"usbtll_fck",		&dummy_ck,	CK_443X),
+	CLK("usbhs_omap",	"usbhost_ick",		&dummy_ck,		CK_443X),
+	CLK("usbhs_omap",	"usbtll_fck",		&dummy_ck,	CK_443X),
 	CLK("omap_wdt",	"ick",				&dummy_ck,	CK_443X),
 };
 
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 8db205e..9c2da29 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -27,7 +27,7 @@
 #include <linux/gpio.h>
 #include <plat/usb.h>
 
-#define USBHS_DRIVER_NAME	"usbhs-omap"
+#define USBHS_DRIVER_NAME	"usbhs_omap"
 #define OMAP_EHCI_DEVICE	"ehci-omap"
 #define OMAP_OHCI_DEVICE	"ohci-omap3"
 
-- 
1.6.0.4

[PATCH 5/5 v7] mfd: omap: usb: Runtime PM support

[Keshava Munegowda]

From: Keshava Munegowda <Keshava_mgowda@ti.com>

The usbhs core driver does not enable/disable the interface and
functional clocks; These clocks are handled by hwmod and runtime pm,
hence instead of the clock enable/disable, the runtime pm APIS are
used. however,the port clocks are handled by the usbhs core.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/plat-omap/include/plat/usb.h |    3 -
 drivers/mfd/omap-usb-host.c           |  731 +++++++++++++--------------------
 drivers/usb/host/ehci-omap.c          |   17 +-
 drivers/usb/host/ohci-omap3.c         |   18 +-
 4 files changed, 295 insertions(+), 474 deletions(-)

diff --git a/arch/arm/plat-omap/include/plat/usb.h b/arch/arm/plat-omap/include/plat/usb.h
index 17d3c93..2b66dc2 100644
--- a/arch/arm/plat-omap/include/plat/usb.h
+++ b/arch/arm/plat-omap/include/plat/usb.h
@@ -100,9 +100,6 @@ extern void usb_musb_init(struct omap_musb_board_data *board_data);
 
 extern void usbhs_init(const struct usbhs_omap_board_data *pdata);
 
-extern int omap_usbhs_enable(struct device *dev);
-extern void omap_usbhs_disable(struct device *dev);
-
 extern int omap4430_phy_power(struct device *dev, int ID, int on);
 extern int omap4430_phy_set_clk(struct device *dev, int on);
 extern int omap4430_phy_init(struct device *dev);
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 9c2da29..e6f3b01 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -26,6 +26,7 @@
 #include <linux/spinlock.h>
 #include <linux/gpio.h>
 #include <plat/usb.h>
+#include <linux/pm_runtime.h>
 
 #define USBHS_DRIVER_NAME	"usbhs_omap"
 #define OMAP_EHCI_DEVICE	"ehci-omap"
@@ -146,9 +147,6 @@
 
 
 struct usbhs_hcd_omap {
-	struct clk			*usbhost_ick;
-	struct clk			*usbhost_hs_fck;
-	struct clk			*usbhost_fs_fck;
 	struct clk			*xclk60mhsp1_ck;
 	struct clk			*xclk60mhsp2_ck;
 	struct clk			*utmi_p1_fck;
@@ -158,8 +156,6 @@ struct usbhs_hcd_omap {
 	struct clk			*usbhost_p2_fck;
 	struct clk			*usbtll_p2_fck;
 	struct clk			*init_60m_fclk;
-	struct clk			*usbtll_fck;
-	struct clk			*usbtll_ick;
 
 	void __iomem			*uhh_base;
 	void __iomem			*tll_base;
@@ -168,7 +164,6 @@ struct usbhs_hcd_omap {
 
 	u32				usbhs_rev;
 	spinlock_t			lock;
-	int				count;
 };
 /*-------------------------------------------------------------------------*/
 
@@ -318,269 +313,6 @@ err_end:
 	return ret;
 }
 
-/**
- * usbhs_omap_probe - initialize TI-based HCDs
- *
- * Allocates basic resources for this USB host controller.
- */
-static int __devinit usbhs_omap_probe(struct platform_device *pdev)
-{
-	struct device			*dev =  &pdev->dev;
-	struct usbhs_omap_platform_data	*pdata = dev->platform_data;
-	struct usbhs_hcd_omap		*omap;
-	struct resource			*res;
-	int				ret = 0;
-	int				i;
-
-	if (!pdata) {
-		dev_err(dev, "Missing platform data\n");
-		ret = -ENOMEM;
-		goto end_probe;
-	}
-
-	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
-	if (!omap) {
-		dev_err(dev, "Memory allocation failed\n");
-		ret = -ENOMEM;
-		goto end_probe;
-	}
-
-	spin_lock_init(&omap->lock);
-
-	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
-		omap->platdata.port_mode[i] = pdata->port_mode[i];
-
-	omap->platdata.ehci_data = pdata->ehci_data;
-	omap->platdata.ohci_data = pdata->ohci_data;
-
-	omap->usbhost_ick = clk_get(dev, "usbhost_ick");
-	if (IS_ERR(omap->usbhost_ick)) {
-		ret =  PTR_ERR(omap->usbhost_ick);
-		dev_err(dev, "usbhost_ick failed error:%d\n", ret);
-		goto err_end;
-	}
-
-	omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
-	if (IS_ERR(omap->usbhost_hs_fck)) {
-		ret = PTR_ERR(omap->usbhost_hs_fck);
-		dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
-		goto err_usbhost_ick;
-	}
-
-	omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
-	if (IS_ERR(omap->usbhost_fs_fck)) {
-		ret = PTR_ERR(omap->usbhost_fs_fck);
-		dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
-		goto err_usbhost_hs_fck;
-	}
-
-	omap->usbtll_fck = clk_get(dev, "usbtll_fck");
-	if (IS_ERR(omap->usbtll_fck)) {
-		ret = PTR_ERR(omap->usbtll_fck);
-		dev_err(dev, "usbtll_fck failed error:%d\n", ret);
-		goto err_usbhost_fs_fck;
-	}
-
-	omap->usbtll_ick = clk_get(dev, "usbtll_ick");
-	if (IS_ERR(omap->usbtll_ick)) {
-		ret = PTR_ERR(omap->usbtll_ick);
-		dev_err(dev, "usbtll_ick failed error:%d\n", ret);
-		goto err_usbtll_fck;
-	}
-
-	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
-	if (IS_ERR(omap->utmi_p1_fck)) {
-		ret = PTR_ERR(omap->utmi_p1_fck);
-		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
-		goto err_usbtll_ick;
-	}
-
-	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
-	if (IS_ERR(omap->xclk60mhsp1_ck)) {
-		ret = PTR_ERR(omap->xclk60mhsp1_ck);
-		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
-		goto err_utmi_p1_fck;
-	}
-
-	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
-	if (IS_ERR(omap->utmi_p2_fck)) {
-		ret = PTR_ERR(omap->utmi_p2_fck);
-		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
-		goto err_xclk60mhsp1_ck;
-	}
-
-	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
-	if (IS_ERR(omap->xclk60mhsp2_ck)) {
-		ret = PTR_ERR(omap->xclk60mhsp2_ck);
-		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
-		goto err_utmi_p2_fck;
-	}
-
-	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
-	if (IS_ERR(omap->usbhost_p1_fck)) {
-		ret = PTR_ERR(omap->usbhost_p1_fck);
-		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
-		goto err_xclk60mhsp2_ck;
-	}
-
-	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
-	if (IS_ERR(omap->usbtll_p1_fck)) {
-		ret = PTR_ERR(omap->usbtll_p1_fck);
-		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
-		goto err_usbhost_p1_fck;
-	}
-
-	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
-	if (IS_ERR(omap->usbhost_p2_fck)) {
-		ret = PTR_ERR(omap->usbhost_p2_fck);
-		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
-		goto err_usbtll_p1_fck;
-	}
-
-	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
-	if (IS_ERR(omap->usbtll_p2_fck)) {
-		ret = PTR_ERR(omap->usbtll_p2_fck);
-		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
-		goto err_usbhost_p2_fck;
-	}
-
-	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
-	if (IS_ERR(omap->init_60m_fclk)) {
-		ret = PTR_ERR(omap->init_60m_fclk);
-		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
-		goto err_usbtll_p2_fck;
-	}
-
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
-	if (!res) {
-		dev_err(dev, "UHH EHCI get resource failed\n");
-		ret = -ENODEV;
-		goto err_init_60m_fclk;
-	}
-
-	omap->uhh_base = ioremap(res->start, resource_size(res));
-	if (!omap->uhh_base) {
-		dev_err(dev, "UHH ioremap failed\n");
-		ret = -ENOMEM;
-		goto err_init_60m_fclk;
-	}
-
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
-	if (!res) {
-		dev_err(dev, "UHH EHCI get resource failed\n");
-		ret = -ENODEV;
-		goto err_tll;
-	}
-
-	omap->tll_base = ioremap(res->start, resource_size(res));
-	if (!omap->tll_base) {
-		dev_err(dev, "TLL ioremap failed\n");
-		ret = -ENOMEM;
-		goto err_tll;
-	}
-
-	platform_set_drvdata(pdev, omap);
-
-	ret = omap_usbhs_alloc_children(pdev);
-	if (ret) {
-		dev_err(dev, "omap_usbhs_alloc_children failed\n");
-		goto err_alloc;
-	}
-
-	goto end_probe;
-
-err_alloc:
-	iounmap(omap->tll_base);
-
-err_tll:
-	iounmap(omap->uhh_base);
-
-err_init_60m_fclk:
-	clk_put(omap->init_60m_fclk);
-
-err_usbtll_p2_fck:
-	clk_put(omap->usbtll_p2_fck);
-
-err_usbhost_p2_fck:
-	clk_put(omap->usbhost_p2_fck);
-
-err_usbtll_p1_fck:
-	clk_put(omap->usbtll_p1_fck);
-
-err_usbhost_p1_fck:
-	clk_put(omap->usbhost_p1_fck);
-
-err_xclk60mhsp2_ck:
-	clk_put(omap->xclk60mhsp2_ck);
-
-err_utmi_p2_fck:
-	clk_put(omap->utmi_p2_fck);
-
-err_xclk60mhsp1_ck:
-	clk_put(omap->xclk60mhsp1_ck);
-
-err_utmi_p1_fck:
-	clk_put(omap->utmi_p1_fck);
-
-err_usbtll_ick:
-	clk_put(omap->usbtll_ick);
-
-err_usbtll_fck:
-	clk_put(omap->usbtll_fck);
-
-err_usbhost_fs_fck:
-	clk_put(omap->usbhost_fs_fck);
-
-err_usbhost_hs_fck:
-	clk_put(omap->usbhost_hs_fck);
-
-err_usbhost_ick:
-	clk_put(omap->usbhost_ick);
-
-err_end:
-	kfree(omap);
-
-end_probe:
-	return ret;
-}
-
-/**
- * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
- * @pdev: USB Host Controller being removed
- *
- * Reverses the effect of usbhs_omap_probe().
- */
-static int __devexit usbhs_omap_remove(struct platform_device *pdev)
-{
-	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
-
-	if (omap->count != 0) {
-		dev_err(&pdev->dev,
-			"Either EHCI or OHCI is still using usbhs core\n");
-		return -EBUSY;
-	}
-
-	iounmap(omap->tll_base);
-	iounmap(omap->uhh_base);
-	clk_put(omap->init_60m_fclk);
-	clk_put(omap->usbtll_p2_fck);
-	clk_put(omap->usbhost_p2_fck);
-	clk_put(omap->usbtll_p1_fck);
-	clk_put(omap->usbhost_p1_fck);
-	clk_put(omap->xclk60mhsp2_ck);
-	clk_put(omap->utmi_p2_fck);
-	clk_put(omap->xclk60mhsp1_ck);
-	clk_put(omap->utmi_p1_fck);
-	clk_put(omap->usbtll_ick);
-	clk_put(omap->usbtll_fck);
-	clk_put(omap->usbhost_fs_fck);
-	clk_put(omap->usbhost_hs_fck);
-	clk_put(omap->usbhost_ick);
-	kfree(omap);
-
-	return 0;
-}
-
 static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
 {
 	switch (pmode) {
@@ -687,30 +419,79 @@ static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
 	}
 }
 
-static int usbhs_enable(struct device *dev)
+static int usbhs_runtime_resume(struct device *dev)
 {
 	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
 	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
-	unsigned long			flags = 0;
-	int				ret = 0;
-	unsigned long			timeout;
-	unsigned			reg;
+	unsigned long			flags;
+
+	dev_dbg(dev, "usbhs_runtime_resume\n");
+
+	if (!pdata) {
+		dev_dbg(dev, "missing platform_data\n");
+		return  -ENODEV;
+	}
+
+	spin_lock_irqsave(&omap->lock, flags);
+
+	if (is_ehci_tll_mode(pdata->port_mode[0])) {
+		clk_enable(omap->usbhost_p1_fck);
+		clk_enable(omap->usbtll_p1_fck);
+	}
+	if (is_ehci_tll_mode(pdata->port_mode[1])) {
+		clk_enable(omap->usbhost_p2_fck);
+		clk_enable(omap->usbtll_p2_fck);
+	}
+	clk_enable(omap->utmi_p1_fck);
+	clk_enable(omap->utmi_p2_fck);
+
+	spin_unlock_irqrestore(&omap->lock, flags);
+
+	return 0;
+}
+
+static int usbhs_runtime_suspend(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
+	unsigned long			flags;
+
+	dev_dbg(dev, "usbhs_runtime_suspend\n");
 
-	dev_dbg(dev, "starting TI HSUSB Controller\n");
 	if (!pdata) {
 		dev_dbg(dev, "missing platform_data\n");
 		return  -ENODEV;
 	}
 
 	spin_lock_irqsave(&omap->lock, flags);
-	if (omap->count > 0)
-		goto end_count;
 
-	clk_enable(omap->usbhost_ick);
-	clk_enable(omap->usbhost_hs_fck);
-	clk_enable(omap->usbhost_fs_fck);
-	clk_enable(omap->usbtll_fck);
-	clk_enable(omap->usbtll_ick);
+	if (is_ehci_tll_mode(pdata->port_mode[0])) {
+		clk_disable(omap->usbhost_p1_fck);
+		clk_disable(omap->usbtll_p1_fck);
+	}
+	if (is_ehci_tll_mode(pdata->port_mode[1])) {
+		clk_disable(omap->usbhost_p2_fck);
+		clk_disable(omap->usbtll_p2_fck);
+	}
+	clk_disable(omap->utmi_p2_fck);
+	clk_disable(omap->utmi_p1_fck);
+
+	spin_unlock_irqrestore(&omap->lock, flags);
+
+	return 0;
+}
+
+static void omap_usbhs_init(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
+	unsigned long			flags;
+	unsigned			reg;
+
+	dev_dbg(dev, "starting TI HSUSB Controller\n");
+
+	pm_runtime_get_sync(dev);
+	spin_lock_irqsave(&omap->lock, flags);
 
 	if (pdata->ehci_data->phy_reset) {
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
@@ -734,50 +515,6 @@ static int usbhs_enable(struct device *dev)
 	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
 	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
 
-	/* perform TLL soft reset, and wait until reset is complete */
-	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
-			OMAP_USBTLL_SYSCONFIG_SOFTRESET);
-
-	/* Wait for TLL reset to complete */
-	timeout = jiffies + msecs_to_jiffies(1000);
-	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
-			& OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
-		cpu_relax();
-
-		if (time_after(jiffies, timeout)) {
-			dev_dbg(dev, "operation timed out\n");
-			ret = -EINVAL;
-			goto err_tll;
-		}
-	}
-
-	dev_dbg(dev, "TLL RESET DONE\n");
-
-	/* (1<<3) = no idle mode only for initial debugging */
-	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
-			OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
-			OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
-			OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
-
-	/* Put UHH in NoIdle/NoStandby mode */
-	reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
-	if (is_omap_usbhs_rev1(omap)) {
-		reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
-				| OMAP_UHH_SYSCONFIG_SIDLEMODE
-				| OMAP_UHH_SYSCONFIG_CACTIVITY
-				| OMAP_UHH_SYSCONFIG_MIDLEMODE);
-		reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
-
-
-	} else if (is_omap_usbhs_rev2(omap)) {
-		reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
-		reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
-		reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
-		reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
-	}
-
-	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
-
 	reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
 	/* setup ULPI bypass and burst configurations */
 	reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
@@ -823,49 +560,6 @@ static int usbhs_enable(struct device *dev)
 		reg &= ~OMAP4_P1_MODE_CLEAR;
 		reg &= ~OMAP4_P2_MODE_CLEAR;
 
-		if (is_ehci_phy_mode(pdata->port_mode[0])) {
-			ret = clk_set_parent(omap->utmi_p1_fck,
-						omap->xclk60mhsp1_ck);
-			if (ret != 0) {
-				dev_err(dev, "xclk60mhsp1_ck set parent"
-				"failed error:%d\n", ret);
-				goto err_tll;
-			}
-		} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
-			ret = clk_set_parent(omap->utmi_p1_fck,
-						omap->init_60m_fclk);
-			if (ret != 0) {
-				dev_err(dev, "init_60m_fclk set parent"
-				"failed error:%d\n", ret);
-				goto err_tll;
-			}
-			clk_enable(omap->usbhost_p1_fck);
-			clk_enable(omap->usbtll_p1_fck);
-		}
-
-		if (is_ehci_phy_mode(pdata->port_mode[1])) {
-			ret = clk_set_parent(omap->utmi_p2_fck,
-						omap->xclk60mhsp2_ck);
-			if (ret != 0) {
-				dev_err(dev, "xclk60mhsp1_ck set parent"
-					"failed error:%d\n", ret);
-				goto err_tll;
-			}
-		} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
-			ret = clk_set_parent(omap->utmi_p2_fck,
-						omap->init_60m_fclk);
-			if (ret != 0) {
-				dev_err(dev, "init_60m_fclk set parent"
-				"failed error:%d\n", ret);
-				goto err_tll;
-			}
-			clk_enable(omap->usbhost_p2_fck);
-			clk_enable(omap->usbtll_p2_fck);
-		}
-
-		clk_enable(omap->utmi_p1_fck);
-		clk_enable(omap->utmi_p2_fck);
-
 		if (is_ehci_tll_mode(pdata->port_mode[0]) ||
 			(is_ohci_port(pdata->port_mode[0])))
 			reg |= OMAP4_P1_MODE_TLL;
@@ -911,12 +605,15 @@ static int usbhs_enable(struct device *dev)
 				(pdata->ehci_data->reset_gpio_port[1], 1);
 	}
 
-end_count:
-	omap->count++;
 	spin_unlock_irqrestore(&omap->lock, flags);
-	return 0;
+	pm_runtime_put_sync(dev);
+}
+
+static void omap_usbhs_deinit(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
 
-err_tll:
 	if (pdata->ehci_data->phy_reset) {
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
@@ -924,123 +621,257 @@ err_tll:
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
 	}
-
-	clk_disable(omap->usbtll_ick);
-	clk_disable(omap->usbtll_fck);
-	clk_disable(omap->usbhost_fs_fck);
-	clk_disable(omap->usbhost_hs_fck);
-	clk_disable(omap->usbhost_ick);
-	spin_unlock_irqrestore(&omap->lock, flags);
-	return ret;
 }
 
-static void usbhs_disable(struct device *dev)
+
+/**
+ * usbhs_omap_probe - initialize TI-based HCDs
+ *
+ * Allocates basic resources for this USB host controller.
+ */
+static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 {
-	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
-	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
-	unsigned long			flags = 0;
-	unsigned long			timeout;
+	struct device			*dev =  &pdev->dev;
+	struct usbhs_omap_platform_data	*pdata = dev->platform_data;
+	struct usbhs_hcd_omap		*omap;
+	struct resource			*res;
+	int				ret = 0;
+	int				i;
 
-	dev_dbg(dev, "stopping TI HSUSB Controller\n");
+	if (!pdata) {
+		dev_err(dev, "Missing platform data\n");
+		ret = -ENOMEM;
+		goto end_probe;
+	}
 
-	spin_lock_irqsave(&omap->lock, flags);
+	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+	if (!omap) {
+		dev_err(dev, "Memory allocation failed\n");
+		ret = -ENOMEM;
+		goto end_probe;
+	}
 
-	if (omap->count == 0)
-		goto end_disble;
+	spin_lock_init(&omap->lock);
 
-	omap->count--;
+	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
+		omap->platdata.port_mode[i] = pdata->port_mode[i];
 
-	if (omap->count != 0)
-		goto end_disble;
+	omap->platdata.ehci_data = pdata->ehci_data;
+	omap->platdata.ohci_data = pdata->ohci_data;
 
-	/* Reset OMAP modules for insmod/rmmod to work */
-	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
-			is_omap_usbhs_rev2(omap) ?
-			OMAP4_UHH_SYSCONFIG_SOFTRESET :
-			OMAP_UHH_SYSCONFIG_SOFTRESET);
+	pm_runtime_enable(dev);
 
-	timeout = jiffies + msecs_to_jiffies(100);
-	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
-				& (1 << 0))) {
-		cpu_relax();
+	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
+	if (IS_ERR(omap->utmi_p1_fck)) {
+		ret = PTR_ERR(omap->utmi_p1_fck);
+		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
+		goto err_end;
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
+	if (IS_ERR(omap->xclk60mhsp1_ck)) {
+		ret = PTR_ERR(omap->xclk60mhsp1_ck);
+		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
+		goto err_utmi_p1_fck;
+	}
+
+	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
+	if (IS_ERR(omap->utmi_p2_fck)) {
+		ret = PTR_ERR(omap->utmi_p2_fck);
+		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
+		goto err_xclk60mhsp1_ck;
+	}
+
+	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
+	if (IS_ERR(omap->xclk60mhsp2_ck)) {
+		ret = PTR_ERR(omap->xclk60mhsp2_ck);
+		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
+		goto err_utmi_p2_fck;
 	}
 
-	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
-				& (1 << 1))) {
-		cpu_relax();
+	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
+	if (IS_ERR(omap->usbhost_p1_fck)) {
+		ret = PTR_ERR(omap->usbhost_p1_fck);
+		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
+		goto err_xclk60mhsp2_ck;
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
+	if (IS_ERR(omap->usbtll_p1_fck)) {
+		ret = PTR_ERR(omap->usbtll_p1_fck);
+		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
+		goto err_usbhost_p1_fck;
+	}
+
+	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
+	if (IS_ERR(omap->usbhost_p2_fck)) {
+		ret = PTR_ERR(omap->usbhost_p2_fck);
+		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
+		goto err_usbtll_p1_fck;
 	}
 
-	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
-				& (1 << 2))) {
-		cpu_relax();
+	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
+	if (IS_ERR(omap->usbtll_p2_fck)) {
+		ret = PTR_ERR(omap->usbtll_p2_fck);
+		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
+		goto err_usbhost_p2_fck;
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
+	if (IS_ERR(omap->init_60m_fclk)) {
+		ret = PTR_ERR(omap->init_60m_fclk);
+		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
+		goto err_usbtll_p2_fck;
 	}
 
-	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
+	if (is_ehci_phy_mode(pdata->port_mode[0])) {
+		/* for OMAP3 , the clk set paretn fails */
+		ret = clk_set_parent(omap->utmi_p1_fck,
+					omap->xclk60mhsp1_ck);
+		if (ret != 0)
+			dev_err(dev, "xclk60mhsp1_ck set parent"
+				"failed error:%d\n", ret);
+	} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
+		ret = clk_set_parent(omap->utmi_p1_fck,
+					omap->init_60m_fclk);
+		if (ret != 0)
+			dev_err(dev, "init_60m_fclk set parent"
+				"failed error:%d\n", ret);
+	}
 
-	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
-				& (1 << 0))) {
-		cpu_relax();
+	if (is_ehci_phy_mode(pdata->port_mode[1])) {
+		ret = clk_set_parent(omap->utmi_p2_fck,
+					omap->xclk60mhsp2_ck);
+		if (ret != 0)
+			dev_err(dev, "xclk60mhsp2_ck set parent"
+					"failed error:%d\n", ret);
+	} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
+		ret = clk_set_parent(omap->utmi_p2_fck,
+						omap->init_60m_fclk);
+		if (ret != 0)
+			dev_err(dev, "init_60m_fclk set parent"
+				"failed error:%d\n", ret);
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
+	if (!res) {
+		dev_err(dev, "UHH EHCI get resource failed\n");
+		ret = -ENODEV;
+		goto err_init_60m_fclk;
 	}
 
-	if (is_omap_usbhs_rev2(omap)) {
-		if (is_ehci_tll_mode(pdata->port_mode[0]))
-			clk_disable(omap->usbtll_p1_fck);
-		if (is_ehci_tll_mode(pdata->port_mode[1]))
-			clk_disable(omap->usbtll_p2_fck);
-		clk_disable(omap->utmi_p2_fck);
-		clk_disable(omap->utmi_p1_fck);
+	omap->uhh_base = ioremap(res->start, resource_size(res));
+	if (!omap->uhh_base) {
+		dev_err(dev, "UHH ioremap failed\n");
+		ret = -ENOMEM;
+		goto err_init_60m_fclk;
 	}
 
-	clk_disable(omap->usbtll_ick);
-	clk_disable(omap->usbtll_fck);
-	clk_disable(omap->usbhost_fs_fck);
-	clk_disable(omap->usbhost_hs_fck);
-	clk_disable(omap->usbhost_ick);
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
+	if (!res) {
+		dev_err(dev, "UHH EHCI get resource failed\n");
+		ret = -ENODEV;
+		goto err_tll;
+	}
 
-	/* The gpio_free migh sleep; so unlock the spinlock */
-	spin_unlock_irqrestore(&omap->lock, flags);
+	omap->tll_base = ioremap(res->start, resource_size(res));
+	if (!omap->tll_base) {
+		dev_err(dev, "TLL ioremap failed\n");
+		ret = -ENOMEM;
+		goto err_tll;
+	}
 
-	if (pdata->ehci_data->phy_reset) {
-		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
-			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
+	platform_set_drvdata(pdev, omap);
 
-		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
-			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+	ret = omap_usbhs_alloc_children(pdev);
+	if (ret) {
+		dev_err(dev, "omap_usbhs_alloc_children failed\n");
+		goto err_alloc;
 	}
-	return;
 
-end_disble:
-	spin_unlock_irqrestore(&omap->lock, flags);
-}
+	omap_usbhs_init(dev);
 
-int omap_usbhs_enable(struct device *dev)
-{
-	return  usbhs_enable(dev->parent);
+	goto end_probe;
+
+err_alloc:
+	iounmap(omap->tll_base);
+
+err_tll:
+	iounmap(omap->uhh_base);
+
+err_init_60m_fclk:
+	clk_put(omap->init_60m_fclk);
+
+err_usbtll_p2_fck:
+	clk_put(omap->usbtll_p2_fck);
+
+err_usbhost_p2_fck:
+	clk_put(omap->usbhost_p2_fck);
+
+err_usbtll_p1_fck:
+	clk_put(omap->usbtll_p1_fck);
+
+err_usbhost_p1_fck:
+	clk_put(omap->usbhost_p1_fck);
+
+err_xclk60mhsp2_ck:
+	clk_put(omap->xclk60mhsp2_ck);
+
+err_utmi_p2_fck:
+	clk_put(omap->utmi_p2_fck);
+
+err_xclk60mhsp1_ck:
+	clk_put(omap->xclk60mhsp1_ck);
+
+err_utmi_p1_fck:
+	clk_put(omap->utmi_p1_fck);
+
+err_end:
+	pm_runtime_disable(dev);
+	kfree(omap);
+
+end_probe:
+	return ret;
 }
-EXPORT_SYMBOL_GPL(omap_usbhs_enable);
 
-void omap_usbhs_disable(struct device *dev)
+/**
+ * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
+ * @pdev: USB Host Controller being removed
+ *
+ * Reverses the effect of usbhs_omap_probe().
+ */
+static int __devexit usbhs_omap_remove(struct platform_device *pdev)
 {
-	usbhs_disable(dev->parent);
+	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
+
+	omap_usbhs_deinit(&pdev->dev);
+	iounmap(omap->tll_base);
+	iounmap(omap->uhh_base);
+	clk_put(omap->init_60m_fclk);
+	clk_put(omap->usbtll_p2_fck);
+	clk_put(omap->usbhost_p2_fck);
+	clk_put(omap->usbtll_p1_fck);
+	clk_put(omap->usbhost_p1_fck);
+	clk_put(omap->xclk60mhsp2_ck);
+	clk_put(omap->utmi_p2_fck);
+	clk_put(omap->xclk60mhsp1_ck);
+	clk_put(omap->utmi_p1_fck);
+	pm_runtime_disable(&pdev->dev);
+	kfree(omap);
+
+	return 0;
 }
-EXPORT_SYMBOL_GPL(omap_usbhs_disable);
+
+static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
+	.runtime_suspend	= usbhs_runtime_suspend,
+	.runtime_resume		= usbhs_runtime_resume,
+};
 
 static struct platform_driver usbhs_omap_driver = {
 	.driver = {
 		.name		= (char *)usbhs_driver_name,
 		.owner		= THIS_MODULE,
+		.pm		= &usbhsomap_dev_pm_ops,
 	},
 	.remove		= __exit_p(usbhs_omap_remove),
 };
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 4524032..82cd3ea 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -41,6 +41,7 @@
 #include <linux/usb/ulpi.h>
 #include <plat/usb.h>
 #include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
 
 /* EHCI Register Set */
 #define EHCI_INSNREG04					(0xA0)
@@ -190,11 +191,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = omap_usbhs_enable(dev);
-	if (ret) {
-		dev_err(dev, "failed to start usbhs with err %d\n", ret);
-		goto err_enable;
-	}
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
 
 	/*
 	 * An undocumented "feature" in the OMAP3 EHCI controller,
@@ -240,11 +238,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 	return 0;
 
 err_add_hcd:
-	omap_usbhs_disable(dev);
-
-err_enable:
 	disable_put_regulator(pdata);
-	usb_put_hcd(hcd);
+	pm_runtime_put_sync(dev);
 
 err_io:
 	iounmap(regs);
@@ -266,10 +261,12 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev)
 	struct usb_hcd *hcd	= dev_get_drvdata(dev);
 
 	usb_remove_hcd(hcd);
-	omap_usbhs_disable(dev);
 	disable_put_regulator(dev->platform_data);
 	iounmap(hcd->regs);
 	usb_put_hcd(hcd);
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
+
 	return 0;
 }
 
diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
index 6048f2f..6cfedaf 100644
--- a/drivers/usb/host/ohci-omap3.c
+++ b/drivers/usb/host/ohci-omap3.c
@@ -31,6 +31,7 @@
 
 #include <linux/platform_device.h>
 #include <plat/usb.h>
+#include <linux/pm_runtime.h>
 
 /*-------------------------------------------------------------------------*/
 
@@ -134,7 +135,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 	int			irq;
 
 	if (usb_disabled())
-		goto err_end;
+		return -ENODEV;
 
 	if (!dev->parent) {
 		dev_err(dev, "Missing parent device\n");
@@ -172,11 +173,8 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 	hcd->rsrc_len = resource_size(res);
 	hcd->regs =  regs;
 
-	ret = omap_usbhs_enable(dev);
-	if (ret) {
-		dev_dbg(dev, "failed to start ohci\n");
-		goto err_end;
-	}
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
 
 	ohci_hcd_init(hcd_to_ohci(hcd));
 
@@ -189,9 +187,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 	return 0;
 
 err_add_hcd:
-	omap_usbhs_disable(dev);
-
-err_end:
+	pm_runtime_put_sync(dev);
 	usb_put_hcd(hcd);
 
 err_io:
@@ -220,9 +216,9 @@ static int __devexit ohci_hcd_omap3_remove(struct platform_device *pdev)
 
 	iounmap(hcd->regs);
 	usb_remove_hcd(hcd);
-	omap_usbhs_disable(dev);
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
 	usb_put_hcd(hcd);
-
 	return 0;
 }
 
-- 
1.6.0.4

[PATCH 5/5 v7] mfd: omap: usb: Runtime PM support

[Keshava Munegowda]

From: Keshava Munegowda <Keshava_mgowda@ti.com>

The usbhs core driver does not enable/disable the interface and
functional clocks; These clocks are handled by hwmod and runtime pm,
hence instead of the clock enable/disable, the runtime pm APIS are
used. however,the port clocks are handled by the usbhs core.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
---
 arch/arm/plat-omap/include/plat/usb.h |    3 -
 drivers/mfd/omap-usb-host.c           |  731 +++++++++++++--------------------
 drivers/usb/host/ehci-omap.c          |   17 +-
 drivers/usb/host/ohci-omap3.c         |   18 +-
 4 files changed, 295 insertions(+), 474 deletions(-)

diff --git a/arch/arm/plat-omap/include/plat/usb.h b/arch/arm/plat-omap/include/plat/usb.h
index 17d3c93..2b66dc2 100644
--- a/arch/arm/plat-omap/include/plat/usb.h
+++ b/arch/arm/plat-omap/include/plat/usb.h
@@ -100,9 +100,6 @@ extern void usb_musb_init(struct omap_musb_board_data *board_data);
 
 extern void usbhs_init(const struct usbhs_omap_board_data *pdata);
 
-extern int omap_usbhs_enable(struct device *dev);
-extern void omap_usbhs_disable(struct device *dev);
-
 extern int omap4430_phy_power(struct device *dev, int ID, int on);
 extern int omap4430_phy_set_clk(struct device *dev, int on);
 extern int omap4430_phy_init(struct device *dev);
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 9c2da29..e6f3b01 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -26,6 +26,7 @@
 #include <linux/spinlock.h>
 #include <linux/gpio.h>
 #include <plat/usb.h>
+#include <linux/pm_runtime.h>
 
 #define USBHS_DRIVER_NAME	"usbhs_omap"
 #define OMAP_EHCI_DEVICE	"ehci-omap"
@@ -146,9 +147,6 @@
 
 
 struct usbhs_hcd_omap {
-	struct clk			*usbhost_ick;
-	struct clk			*usbhost_hs_fck;
-	struct clk			*usbhost_fs_fck;
 	struct clk			*xclk60mhsp1_ck;
 	struct clk			*xclk60mhsp2_ck;
 	struct clk			*utmi_p1_fck;
@@ -158,8 +156,6 @@ struct usbhs_hcd_omap {
 	struct clk			*usbhost_p2_fck;
 	struct clk			*usbtll_p2_fck;
 	struct clk			*init_60m_fclk;
-	struct clk			*usbtll_fck;
-	struct clk			*usbtll_ick;
 
 	void __iomem			*uhh_base;
 	void __iomem			*tll_base;
@@ -168,7 +164,6 @@ struct usbhs_hcd_omap {
 
 	u32				usbhs_rev;
 	spinlock_t			lock;
-	int				count;
 };
 /*-------------------------------------------------------------------------*/
 
@@ -318,269 +313,6 @@ err_end:
 	return ret;
 }
 
-/**
- * usbhs_omap_probe - initialize TI-based HCDs
- *
- * Allocates basic resources for this USB host controller.
- */
-static int __devinit usbhs_omap_probe(struct platform_device *pdev)
-{
-	struct device			*dev =  &pdev->dev;
-	struct usbhs_omap_platform_data	*pdata = dev->platform_data;
-	struct usbhs_hcd_omap		*omap;
-	struct resource			*res;
-	int				ret = 0;
-	int				i;
-
-	if (!pdata) {
-		dev_err(dev, "Missing platform data\n");
-		ret = -ENOMEM;
-		goto end_probe;
-	}
-
-	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
-	if (!omap) {
-		dev_err(dev, "Memory allocation failed\n");
-		ret = -ENOMEM;
-		goto end_probe;
-	}
-
-	spin_lock_init(&omap->lock);
-
-	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
-		omap->platdata.port_mode[i] = pdata->port_mode[i];
-
-	omap->platdata.ehci_data = pdata->ehci_data;
-	omap->platdata.ohci_data = pdata->ohci_data;
-
-	omap->usbhost_ick = clk_get(dev, "usbhost_ick");
-	if (IS_ERR(omap->usbhost_ick)) {
-		ret =  PTR_ERR(omap->usbhost_ick);
-		dev_err(dev, "usbhost_ick failed error:%d\n", ret);
-		goto err_end;
-	}
-
-	omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
-	if (IS_ERR(omap->usbhost_hs_fck)) {
-		ret = PTR_ERR(omap->usbhost_hs_fck);
-		dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
-		goto err_usbhost_ick;
-	}
-
-	omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
-	if (IS_ERR(omap->usbhost_fs_fck)) {
-		ret = PTR_ERR(omap->usbhost_fs_fck);
-		dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
-		goto err_usbhost_hs_fck;
-	}
-
-	omap->usbtll_fck = clk_get(dev, "usbtll_fck");
-	if (IS_ERR(omap->usbtll_fck)) {
-		ret = PTR_ERR(omap->usbtll_fck);
-		dev_err(dev, "usbtll_fck failed error:%d\n", ret);
-		goto err_usbhost_fs_fck;
-	}
-
-	omap->usbtll_ick = clk_get(dev, "usbtll_ick");
-	if (IS_ERR(omap->usbtll_ick)) {
-		ret = PTR_ERR(omap->usbtll_ick);
-		dev_err(dev, "usbtll_ick failed error:%d\n", ret);
-		goto err_usbtll_fck;
-	}
-
-	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
-	if (IS_ERR(omap->utmi_p1_fck)) {
-		ret = PTR_ERR(omap->utmi_p1_fck);
-		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
-		goto err_usbtll_ick;
-	}
-
-	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
-	if (IS_ERR(omap->xclk60mhsp1_ck)) {
-		ret = PTR_ERR(omap->xclk60mhsp1_ck);
-		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
-		goto err_utmi_p1_fck;
-	}
-
-	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
-	if (IS_ERR(omap->utmi_p2_fck)) {
-		ret = PTR_ERR(omap->utmi_p2_fck);
-		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
-		goto err_xclk60mhsp1_ck;
-	}
-
-	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
-	if (IS_ERR(omap->xclk60mhsp2_ck)) {
-		ret = PTR_ERR(omap->xclk60mhsp2_ck);
-		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
-		goto err_utmi_p2_fck;
-	}
-
-	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
-	if (IS_ERR(omap->usbhost_p1_fck)) {
-		ret = PTR_ERR(omap->usbhost_p1_fck);
-		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
-		goto err_xclk60mhsp2_ck;
-	}
-
-	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
-	if (IS_ERR(omap->usbtll_p1_fck)) {
-		ret = PTR_ERR(omap->usbtll_p1_fck);
-		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
-		goto err_usbhost_p1_fck;
-	}
-
-	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
-	if (IS_ERR(omap->usbhost_p2_fck)) {
-		ret = PTR_ERR(omap->usbhost_p2_fck);
-		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
-		goto err_usbtll_p1_fck;
-	}
-
-	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
-	if (IS_ERR(omap->usbtll_p2_fck)) {
-		ret = PTR_ERR(omap->usbtll_p2_fck);
-		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
-		goto err_usbhost_p2_fck;
-	}
-
-	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
-	if (IS_ERR(omap->init_60m_fclk)) {
-		ret = PTR_ERR(omap->init_60m_fclk);
-		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
-		goto err_usbtll_p2_fck;
-	}
-
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
-	if (!res) {
-		dev_err(dev, "UHH EHCI get resource failed\n");
-		ret = -ENODEV;
-		goto err_init_60m_fclk;
-	}
-
-	omap->uhh_base = ioremap(res->start, resource_size(res));
-	if (!omap->uhh_base) {
-		dev_err(dev, "UHH ioremap failed\n");
-		ret = -ENOMEM;
-		goto err_init_60m_fclk;
-	}
-
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
-	if (!res) {
-		dev_err(dev, "UHH EHCI get resource failed\n");
-		ret = -ENODEV;
-		goto err_tll;
-	}
-
-	omap->tll_base = ioremap(res->start, resource_size(res));
-	if (!omap->tll_base) {
-		dev_err(dev, "TLL ioremap failed\n");
-		ret = -ENOMEM;
-		goto err_tll;
-	}
-
-	platform_set_drvdata(pdev, omap);
-
-	ret = omap_usbhs_alloc_children(pdev);
-	if (ret) {
-		dev_err(dev, "omap_usbhs_alloc_children failed\n");
-		goto err_alloc;
-	}
-
-	goto end_probe;
-
-err_alloc:
-	iounmap(omap->tll_base);
-
-err_tll:
-	iounmap(omap->uhh_base);
-
-err_init_60m_fclk:
-	clk_put(omap->init_60m_fclk);
-
-err_usbtll_p2_fck:
-	clk_put(omap->usbtll_p2_fck);
-
-err_usbhost_p2_fck:
-	clk_put(omap->usbhost_p2_fck);
-
-err_usbtll_p1_fck:
-	clk_put(omap->usbtll_p1_fck);
-
-err_usbhost_p1_fck:
-	clk_put(omap->usbhost_p1_fck);
-
-err_xclk60mhsp2_ck:
-	clk_put(omap->xclk60mhsp2_ck);
-
-err_utmi_p2_fck:
-	clk_put(omap->utmi_p2_fck);
-
-err_xclk60mhsp1_ck:
-	clk_put(omap->xclk60mhsp1_ck);
-
-err_utmi_p1_fck:
-	clk_put(omap->utmi_p1_fck);
-
-err_usbtll_ick:
-	clk_put(omap->usbtll_ick);
-
-err_usbtll_fck:
-	clk_put(omap->usbtll_fck);
-
-err_usbhost_fs_fck:
-	clk_put(omap->usbhost_fs_fck);
-
-err_usbhost_hs_fck:
-	clk_put(omap->usbhost_hs_fck);
-
-err_usbhost_ick:
-	clk_put(omap->usbhost_ick);
-
-err_end:
-	kfree(omap);
-
-end_probe:
-	return ret;
-}
-
-/**
- * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
- * @pdev: USB Host Controller being removed
- *
- * Reverses the effect of usbhs_omap_probe().
- */
-static int __devexit usbhs_omap_remove(struct platform_device *pdev)
-{
-	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
-
-	if (omap->count != 0) {
-		dev_err(&pdev->dev,
-			"Either EHCI or OHCI is still using usbhs core\n");
-		return -EBUSY;
-	}
-
-	iounmap(omap->tll_base);
-	iounmap(omap->uhh_base);
-	clk_put(omap->init_60m_fclk);
-	clk_put(omap->usbtll_p2_fck);
-	clk_put(omap->usbhost_p2_fck);
-	clk_put(omap->usbtll_p1_fck);
-	clk_put(omap->usbhost_p1_fck);
-	clk_put(omap->xclk60mhsp2_ck);
-	clk_put(omap->utmi_p2_fck);
-	clk_put(omap->xclk60mhsp1_ck);
-	clk_put(omap->utmi_p1_fck);
-	clk_put(omap->usbtll_ick);
-	clk_put(omap->usbtll_fck);
-	clk_put(omap->usbhost_fs_fck);
-	clk_put(omap->usbhost_hs_fck);
-	clk_put(omap->usbhost_ick);
-	kfree(omap);
-
-	return 0;
-}
-
 static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
 {
 	switch (pmode) {
@@ -687,30 +419,79 @@ static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
 	}
 }
 
-static int usbhs_enable(struct device *dev)
+static int usbhs_runtime_resume(struct device *dev)
 {
 	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
 	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
-	unsigned long			flags = 0;
-	int				ret = 0;
-	unsigned long			timeout;
-	unsigned			reg;
+	unsigned long			flags;
+
+	dev_dbg(dev, "usbhs_runtime_resume\n");
+
+	if (!pdata) {
+		dev_dbg(dev, "missing platform_data\n");
+		return  -ENODEV;
+	}
+
+	spin_lock_irqsave(&omap->lock, flags);
+
+	if (is_ehci_tll_mode(pdata->port_mode[0])) {
+		clk_enable(omap->usbhost_p1_fck);
+		clk_enable(omap->usbtll_p1_fck);
+	}
+	if (is_ehci_tll_mode(pdata->port_mode[1])) {
+		clk_enable(omap->usbhost_p2_fck);
+		clk_enable(omap->usbtll_p2_fck);
+	}
+	clk_enable(omap->utmi_p1_fck);
+	clk_enable(omap->utmi_p2_fck);
+
+	spin_unlock_irqrestore(&omap->lock, flags);
+
+	return 0;
+}
+
+static int usbhs_runtime_suspend(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
+	unsigned long			flags;
+
+	dev_dbg(dev, "usbhs_runtime_suspend\n");
 
-	dev_dbg(dev, "starting TI HSUSB Controller\n");
 	if (!pdata) {
 		dev_dbg(dev, "missing platform_data\n");
 		return  -ENODEV;
 	}
 
 	spin_lock_irqsave(&omap->lock, flags);
-	if (omap->count > 0)
-		goto end_count;
 
-	clk_enable(omap->usbhost_ick);
-	clk_enable(omap->usbhost_hs_fck);
-	clk_enable(omap->usbhost_fs_fck);
-	clk_enable(omap->usbtll_fck);
-	clk_enable(omap->usbtll_ick);
+	if (is_ehci_tll_mode(pdata->port_mode[0])) {
+		clk_disable(omap->usbhost_p1_fck);
+		clk_disable(omap->usbtll_p1_fck);
+	}
+	if (is_ehci_tll_mode(pdata->port_mode[1])) {
+		clk_disable(omap->usbhost_p2_fck);
+		clk_disable(omap->usbtll_p2_fck);
+	}
+	clk_disable(omap->utmi_p2_fck);
+	clk_disable(omap->utmi_p1_fck);
+
+	spin_unlock_irqrestore(&omap->lock, flags);
+
+	return 0;
+}
+
+static void omap_usbhs_init(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
+	unsigned long			flags;
+	unsigned			reg;
+
+	dev_dbg(dev, "starting TI HSUSB Controller\n");
+
+	pm_runtime_get_sync(dev);
+	spin_lock_irqsave(&omap->lock, flags);
 
 	if (pdata->ehci_data->phy_reset) {
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
@@ -734,50 +515,6 @@ static int usbhs_enable(struct device *dev)
 	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
 	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
 
-	/* perform TLL soft reset, and wait until reset is complete */
-	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
-			OMAP_USBTLL_SYSCONFIG_SOFTRESET);
-
-	/* Wait for TLL reset to complete */
-	timeout = jiffies + msecs_to_jiffies(1000);
-	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
-			& OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
-		cpu_relax();
-
-		if (time_after(jiffies, timeout)) {
-			dev_dbg(dev, "operation timed out\n");
-			ret = -EINVAL;
-			goto err_tll;
-		}
-	}
-
-	dev_dbg(dev, "TLL RESET DONE\n");
-
-	/* (1<<3) = no idle mode only for initial debugging */
-	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
-			OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
-			OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
-			OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
-
-	/* Put UHH in NoIdle/NoStandby mode */
-	reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
-	if (is_omap_usbhs_rev1(omap)) {
-		reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
-				| OMAP_UHH_SYSCONFIG_SIDLEMODE
-				| OMAP_UHH_SYSCONFIG_CACTIVITY
-				| OMAP_UHH_SYSCONFIG_MIDLEMODE);
-		reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
-
-
-	} else if (is_omap_usbhs_rev2(omap)) {
-		reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
-		reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
-		reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
-		reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
-	}
-
-	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
-
 	reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
 	/* setup ULPI bypass and burst configurations */
 	reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
@@ -823,49 +560,6 @@ static int usbhs_enable(struct device *dev)
 		reg &= ~OMAP4_P1_MODE_CLEAR;
 		reg &= ~OMAP4_P2_MODE_CLEAR;
 
-		if (is_ehci_phy_mode(pdata->port_mode[0])) {
-			ret = clk_set_parent(omap->utmi_p1_fck,
-						omap->xclk60mhsp1_ck);
-			if (ret != 0) {
-				dev_err(dev, "xclk60mhsp1_ck set parent"
-				"failed error:%d\n", ret);
-				goto err_tll;
-			}
-		} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
-			ret = clk_set_parent(omap->utmi_p1_fck,
-						omap->init_60m_fclk);
-			if (ret != 0) {
-				dev_err(dev, "init_60m_fclk set parent"
-				"failed error:%d\n", ret);
-				goto err_tll;
-			}
-			clk_enable(omap->usbhost_p1_fck);
-			clk_enable(omap->usbtll_p1_fck);
-		}
-
-		if (is_ehci_phy_mode(pdata->port_mode[1])) {
-			ret = clk_set_parent(omap->utmi_p2_fck,
-						omap->xclk60mhsp2_ck);
-			if (ret != 0) {
-				dev_err(dev, "xclk60mhsp1_ck set parent"
-					"failed error:%d\n", ret);
-				goto err_tll;
-			}
-		} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
-			ret = clk_set_parent(omap->utmi_p2_fck,
-						omap->init_60m_fclk);
-			if (ret != 0) {
-				dev_err(dev, "init_60m_fclk set parent"
-				"failed error:%d\n", ret);
-				goto err_tll;
-			}
-			clk_enable(omap->usbhost_p2_fck);
-			clk_enable(omap->usbtll_p2_fck);
-		}
-
-		clk_enable(omap->utmi_p1_fck);
-		clk_enable(omap->utmi_p2_fck);
-
 		if (is_ehci_tll_mode(pdata->port_mode[0]) ||
 			(is_ohci_port(pdata->port_mode[0])))
 			reg |= OMAP4_P1_MODE_TLL;
@@ -911,12 +605,15 @@ static int usbhs_enable(struct device *dev)
 				(pdata->ehci_data->reset_gpio_port[1], 1);
 	}
 
-end_count:
-	omap->count++;
 	spin_unlock_irqrestore(&omap->lock, flags);
-	return 0;
+	pm_runtime_put_sync(dev);
+}
+
+static void omap_usbhs_deinit(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
 
-err_tll:
 	if (pdata->ehci_data->phy_reset) {
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
@@ -924,123 +621,257 @@ err_tll:
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
 	}
-
-	clk_disable(omap->usbtll_ick);
-	clk_disable(omap->usbtll_fck);
-	clk_disable(omap->usbhost_fs_fck);
-	clk_disable(omap->usbhost_hs_fck);
-	clk_disable(omap->usbhost_ick);
-	spin_unlock_irqrestore(&omap->lock, flags);
-	return ret;
 }
 
-static void usbhs_disable(struct device *dev)
+
+/**
+ * usbhs_omap_probe - initialize TI-based HCDs
+ *
+ * Allocates basic resources for this USB host controller.
+ */
+static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 {
-	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
-	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
-	unsigned long			flags = 0;
-	unsigned long			timeout;
+	struct device			*dev =  &pdev->dev;
+	struct usbhs_omap_platform_data	*pdata = dev->platform_data;
+	struct usbhs_hcd_omap		*omap;
+	struct resource			*res;
+	int				ret = 0;
+	int				i;
 
-	dev_dbg(dev, "stopping TI HSUSB Controller\n");
+	if (!pdata) {
+		dev_err(dev, "Missing platform data\n");
+		ret = -ENOMEM;
+		goto end_probe;
+	}
 
-	spin_lock_irqsave(&omap->lock, flags);
+	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+	if (!omap) {
+		dev_err(dev, "Memory allocation failed\n");
+		ret = -ENOMEM;
+		goto end_probe;
+	}
 
-	if (omap->count == 0)
-		goto end_disble;
+	spin_lock_init(&omap->lock);
 
-	omap->count--;
+	for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
+		omap->platdata.port_mode[i] = pdata->port_mode[i];
 
-	if (omap->count != 0)
-		goto end_disble;
+	omap->platdata.ehci_data = pdata->ehci_data;
+	omap->platdata.ohci_data = pdata->ohci_data;
 
-	/* Reset OMAP modules for insmod/rmmod to work */
-	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
-			is_omap_usbhs_rev2(omap) ?
-			OMAP4_UHH_SYSCONFIG_SOFTRESET :
-			OMAP_UHH_SYSCONFIG_SOFTRESET);
+	pm_runtime_enable(dev);
 
-	timeout = jiffies + msecs_to_jiffies(100);
-	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
-				& (1 << 0))) {
-		cpu_relax();
+	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
+	if (IS_ERR(omap->utmi_p1_fck)) {
+		ret = PTR_ERR(omap->utmi_p1_fck);
+		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
+		goto err_end;
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
+	if (IS_ERR(omap->xclk60mhsp1_ck)) {
+		ret = PTR_ERR(omap->xclk60mhsp1_ck);
+		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
+		goto err_utmi_p1_fck;
+	}
+
+	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
+	if (IS_ERR(omap->utmi_p2_fck)) {
+		ret = PTR_ERR(omap->utmi_p2_fck);
+		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
+		goto err_xclk60mhsp1_ck;
+	}
+
+	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
+	if (IS_ERR(omap->xclk60mhsp2_ck)) {
+		ret = PTR_ERR(omap->xclk60mhsp2_ck);
+		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
+		goto err_utmi_p2_fck;
 	}
 
-	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
-				& (1 << 1))) {
-		cpu_relax();
+	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
+	if (IS_ERR(omap->usbhost_p1_fck)) {
+		ret = PTR_ERR(omap->usbhost_p1_fck);
+		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
+		goto err_xclk60mhsp2_ck;
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
+	if (IS_ERR(omap->usbtll_p1_fck)) {
+		ret = PTR_ERR(omap->usbtll_p1_fck);
+		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
+		goto err_usbhost_p1_fck;
+	}
+
+	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
+	if (IS_ERR(omap->usbhost_p2_fck)) {
+		ret = PTR_ERR(omap->usbhost_p2_fck);
+		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
+		goto err_usbtll_p1_fck;
 	}
 
-	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
-				& (1 << 2))) {
-		cpu_relax();
+	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
+	if (IS_ERR(omap->usbtll_p2_fck)) {
+		ret = PTR_ERR(omap->usbtll_p2_fck);
+		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
+		goto err_usbhost_p2_fck;
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
+	if (IS_ERR(omap->init_60m_fclk)) {
+		ret = PTR_ERR(omap->init_60m_fclk);
+		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
+		goto err_usbtll_p2_fck;
 	}
 
-	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
+	if (is_ehci_phy_mode(pdata->port_mode[0])) {
+		/* for OMAP3 , the clk set paretn fails */
+		ret = clk_set_parent(omap->utmi_p1_fck,
+					omap->xclk60mhsp1_ck);
+		if (ret != 0)
+			dev_err(dev, "xclk60mhsp1_ck set parent"
+				"failed error:%d\n", ret);
+	} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
+		ret = clk_set_parent(omap->utmi_p1_fck,
+					omap->init_60m_fclk);
+		if (ret != 0)
+			dev_err(dev, "init_60m_fclk set parent"
+				"failed error:%d\n", ret);
+	}
 
-	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
-				& (1 << 0))) {
-		cpu_relax();
+	if (is_ehci_phy_mode(pdata->port_mode[1])) {
+		ret = clk_set_parent(omap->utmi_p2_fck,
+					omap->xclk60mhsp2_ck);
+		if (ret != 0)
+			dev_err(dev, "xclk60mhsp2_ck set parent"
+					"failed error:%d\n", ret);
+	} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
+		ret = clk_set_parent(omap->utmi_p2_fck,
+						omap->init_60m_fclk);
+		if (ret != 0)
+			dev_err(dev, "init_60m_fclk set parent"
+				"failed error:%d\n", ret);
+	}
 
-		if (time_after(jiffies, timeout))
-			dev_dbg(dev, "operation timed out\n");
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
+	if (!res) {
+		dev_err(dev, "UHH EHCI get resource failed\n");
+		ret = -ENODEV;
+		goto err_init_60m_fclk;
 	}
 
-	if (is_omap_usbhs_rev2(omap)) {
-		if (is_ehci_tll_mode(pdata->port_mode[0]))
-			clk_disable(omap->usbtll_p1_fck);
-		if (is_ehci_tll_mode(pdata->port_mode[1]))
-			clk_disable(omap->usbtll_p2_fck);
-		clk_disable(omap->utmi_p2_fck);
-		clk_disable(omap->utmi_p1_fck);
+	omap->uhh_base = ioremap(res->start, resource_size(res));
+	if (!omap->uhh_base) {
+		dev_err(dev, "UHH ioremap failed\n");
+		ret = -ENOMEM;
+		goto err_init_60m_fclk;
 	}
 
-	clk_disable(omap->usbtll_ick);
-	clk_disable(omap->usbtll_fck);
-	clk_disable(omap->usbhost_fs_fck);
-	clk_disable(omap->usbhost_hs_fck);
-	clk_disable(omap->usbhost_ick);
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
+	if (!res) {
+		dev_err(dev, "UHH EHCI get resource failed\n");
+		ret = -ENODEV;
+		goto err_tll;
+	}
 
-	/* The gpio_free migh sleep; so unlock the spinlock */
-	spin_unlock_irqrestore(&omap->lock, flags);
+	omap->tll_base = ioremap(res->start, resource_size(res));
+	if (!omap->tll_base) {
+		dev_err(dev, "TLL ioremap failed\n");
+		ret = -ENOMEM;
+		goto err_tll;
+	}
 
-	if (pdata->ehci_data->phy_reset) {
-		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
-			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
+	platform_set_drvdata(pdev, omap);
 
-		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
-			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+	ret = omap_usbhs_alloc_children(pdev);
+	if (ret) {
+		dev_err(dev, "omap_usbhs_alloc_children failed\n");
+		goto err_alloc;
 	}
-	return;
 
-end_disble:
-	spin_unlock_irqrestore(&omap->lock, flags);
-}
+	omap_usbhs_init(dev);
 
-int omap_usbhs_enable(struct device *dev)
-{
-	return  usbhs_enable(dev->parent);
+	goto end_probe;
+
+err_alloc:
+	iounmap(omap->tll_base);
+
+err_tll:
+	iounmap(omap->uhh_base);
+
+err_init_60m_fclk:
+	clk_put(omap->init_60m_fclk);
+
+err_usbtll_p2_fck:
+	clk_put(omap->usbtll_p2_fck);
+
+err_usbhost_p2_fck:
+	clk_put(omap->usbhost_p2_fck);
+
+err_usbtll_p1_fck:
+	clk_put(omap->usbtll_p1_fck);
+
+err_usbhost_p1_fck:
+	clk_put(omap->usbhost_p1_fck);
+
+err_xclk60mhsp2_ck:
+	clk_put(omap->xclk60mhsp2_ck);
+
+err_utmi_p2_fck:
+	clk_put(omap->utmi_p2_fck);
+
+err_xclk60mhsp1_ck:
+	clk_put(omap->xclk60mhsp1_ck);
+
+err_utmi_p1_fck:
+	clk_put(omap->utmi_p1_fck);
+
+err_end:
+	pm_runtime_disable(dev);
+	kfree(omap);
+
+end_probe:
+	return ret;
 }
-EXPORT_SYMBOL_GPL(omap_usbhs_enable);
 
-void omap_usbhs_disable(struct device *dev)
+/**
+ * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
+ * @pdev: USB Host Controller being removed
+ *
+ * Reverses the effect of usbhs_omap_probe().
+ */
+static int __devexit usbhs_omap_remove(struct platform_device *pdev)
 {
-	usbhs_disable(dev->parent);
+	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
+
+	omap_usbhs_deinit(&pdev->dev);
+	iounmap(omap->tll_base);
+	iounmap(omap->uhh_base);
+	clk_put(omap->init_60m_fclk);
+	clk_put(omap->usbtll_p2_fck);
+	clk_put(omap->usbhost_p2_fck);
+	clk_put(omap->usbtll_p1_fck);
+	clk_put(omap->usbhost_p1_fck);
+	clk_put(omap->xclk60mhsp2_ck);
+	clk_put(omap->utmi_p2_fck);
+	clk_put(omap->xclk60mhsp1_ck);
+	clk_put(omap->utmi_p1_fck);
+	pm_runtime_disable(&pdev->dev);
+	kfree(omap);
+
+	return 0;
 }
-EXPORT_SYMBOL_GPL(omap_usbhs_disable);
+
+static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
+	.runtime_suspend	= usbhs_runtime_suspend,
+	.runtime_resume		= usbhs_runtime_resume,
+};
 
 static struct platform_driver usbhs_omap_driver = {
 	.driver = {
 		.name		= (char *)usbhs_driver_name,
 		.owner		= THIS_MODULE,
+		.pm		= &usbhsomap_dev_pm_ops,
 	},
 	.remove		= __exit_p(usbhs_omap_remove),
 };
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 4524032..82cd3ea 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -41,6 +41,7 @@
 #include <linux/usb/ulpi.h>
 #include <plat/usb.h>
 #include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
 
 /* EHCI Register Set */
 #define EHCI_INSNREG04					(0xA0)
@@ -190,11 +191,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = omap_usbhs_enable(dev);
-	if (ret) {
-		dev_err(dev, "failed to start usbhs with err %d\n", ret);
-		goto err_enable;
-	}
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
 
 	/*
 	 * An undocumented "feature" in the OMAP3 EHCI controller,
@@ -240,11 +238,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 	return 0;
 
 err_add_hcd:
-	omap_usbhs_disable(dev);
-
-err_enable:
 	disable_put_regulator(pdata);
-	usb_put_hcd(hcd);
+	pm_runtime_put_sync(dev);
 
 err_io:
 	iounmap(regs);
@@ -266,10 +261,12 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev)
 	struct usb_hcd *hcd	= dev_get_drvdata(dev);
 
 	usb_remove_hcd(hcd);
-	omap_usbhs_disable(dev);
 	disable_put_regulator(dev->platform_data);
 	iounmap(hcd->regs);
 	usb_put_hcd(hcd);
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
+
 	return 0;
 }
 
diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
index 6048f2f..6cfedaf 100644
--- a/drivers/usb/host/ohci-omap3.c
+++ b/drivers/usb/host/ohci-omap3.c
@@ -31,6 +31,7 @@
 
 #include <linux/platform_device.h>
 #include <plat/usb.h>
+#include <linux/pm_runtime.h>
 
 /*-------------------------------------------------------------------------*/
 
@@ -134,7 +135,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 	int			irq;
 
 	if (usb_disabled())
-		goto err_end;
+		return -ENODEV;
 
 	if (!dev->parent) {
 		dev_err(dev, "Missing parent device\n");
@@ -172,11 +173,8 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 	hcd->rsrc_len = resource_size(res);
 	hcd->regs =  regs;
 
-	ret = omap_usbhs_enable(dev);
-	if (ret) {
-		dev_dbg(dev, "failed to start ohci\n");
-		goto err_end;
-	}
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
 
 	ohci_hcd_init(hcd_to_ohci(hcd));
 
@@ -189,9 +187,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 	return 0;
 
 err_add_hcd:
-	omap_usbhs_disable(dev);
-
-err_end:
+	pm_runtime_put_sync(dev);
 	usb_put_hcd(hcd);
 
 err_io:
@@ -220,9 +216,9 @@ static int __devexit ohci_hcd_omap3_remove(struct platform_device *pdev)
 
 	iounmap(hcd->regs);
 	usb_remove_hcd(hcd);
-	omap_usbhs_disable(dev);
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
 	usb_put_hcd(hcd);
-
 	return 0;
 }
 
-- 
1.6.0.4

Re: [PATCH 5/5 v7] mfd: omap: usb: Runtime PM support

[Shubhrajyoti]

Hi Keshav,
Some minor comments

On Wednesday 24 August 2011 08:01 PM, Keshava Munegowda wrote:
> From: Keshava Munegowda<Keshava_mgowda@ti.com>
>
> The usbhs core driver does not enable/disable the interface and
> functional clocks; These clocks are handled by hwmod and runtime pm,
> hence instead of the clock enable/disable, the runtime pm APIS are
> used. however,the port clocks are handled by the usbhs core.
>
> Signed-off-by: Keshava Munegowda<keshava_mgowda@ti.com>
> ---
>   arch/arm/plat-omap/include/plat/usb.h |    3 -
>   drivers/mfd/omap-usb-host.c           |  731 +++++++++++++--------------------
>   drivers/usb/host/ehci-omap.c          |   17 +-
>   drivers/usb/host/ohci-omap3.c         |   18 +-
>   4 files changed, 295 insertions(+), 474 deletions(-)
>
> diff --git a/arch/arm/plat-omap/include/plat/usb.h b/arch/arm/plat-omap/include/plat/usb.h
> index 17d3c93..2b66dc2 100644
> --- a/arch/arm/plat-omap/include/plat/usb.h
> +++ b/arch/arm/plat-omap/include/plat/usb.h
> @@ -100,9 +100,6 @@ extern void usb_musb_init(struct omap_musb_board_data *board_data);
>
>   extern void usbhs_init(const struct usbhs_omap_board_data *pdata);
>
> -extern int omap_usbhs_enable(struct device *dev);
> -extern void omap_usbhs_disable(struct device *dev);
> -
>   extern int omap4430_phy_power(struct device *dev, int ID, int on);
>   extern int omap4430_phy_set_clk(struct device *dev, int on);
>   extern int omap4430_phy_init(struct device *dev);
> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
> index 9c2da29..e6f3b01 100644
> --- a/drivers/mfd/omap-usb-host.c
> +++ b/drivers/mfd/omap-usb-host.c
> @@ -26,6 +26,7 @@
>   #include<linux/spinlock.h>
>   #include<linux/gpio.h>
>   #include<plat/usb.h>
> +#include<linux/pm_runtime.h>
>
>   #define USBHS_DRIVER_NAME	"usbhs_omap"
>   #define OMAP_EHCI_DEVICE	"ehci-omap"
> @@ -146,9 +147,6 @@
>
>
>   struct usbhs_hcd_omap {
> -	struct clk			*usbhost_ick;
> -	struct clk			*usbhost_hs_fck;
> -	struct clk			*usbhost_fs_fck;
>   	struct clk			*xclk60mhsp1_ck;
>   	struct clk			*xclk60mhsp2_ck;
>   	struct clk			*utmi_p1_fck;
> @@ -158,8 +156,6 @@ struct usbhs_hcd_omap {
>   	struct clk			*usbhost_p2_fck;
>   	struct clk			*usbtll_p2_fck;
>   	struct clk			*init_60m_fclk;
> -	struct clk			*usbtll_fck;
> -	struct clk			*usbtll_ick;
>
>   	void __iomem			*uhh_base;
>   	void __iomem			*tll_base;
> @@ -168,7 +164,6 @@ struct usbhs_hcd_omap {
>
>   	u32				usbhs_rev;
>   	spinlock_t			lock;
> -	int				count;
>   };
>   /*-------------------------------------------------------------------------*/
>
> @@ -318,269 +313,6 @@ err_end:
>   	return ret;
>   }
>
> -/**
> - * usbhs_omap_probe - initialize TI-based HCDs
> - *
> - * Allocates basic resources for this USB host controller.
> - */
> -static int __devinit usbhs_omap_probe(struct platform_device *pdev)
> -{
> -	struct device			*dev =&pdev->dev;
> -	struct usbhs_omap_platform_data	*pdata = dev->platform_data;
> -	struct usbhs_hcd_omap		*omap;
> -	struct resource			*res;
> -	int				ret = 0;
> -	int				i;
> -
> -	if (!pdata) {
> -		dev_err(dev, "Missing platform data\n");
> -		ret = -ENOMEM;
> -		goto end_probe;
> -	}
> -
> -	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
> -	if (!omap) {
> -		dev_err(dev, "Memory allocation failed\n");
> -		ret = -ENOMEM;
> -		goto end_probe;
> -	}
> -
> -	spin_lock_init(&omap->lock);
> -
> -	for (i = 0; i<  OMAP3_HS_USB_PORTS; i++)
> -		omap->platdata.port_mode[i] = pdata->port_mode[i];
> -
> -	omap->platdata.ehci_data = pdata->ehci_data;
> -	omap->platdata.ohci_data = pdata->ohci_data;
> -
> -	omap->usbhost_ick = clk_get(dev, "usbhost_ick");
> -	if (IS_ERR(omap->usbhost_ick)) {
> -		ret =  PTR_ERR(omap->usbhost_ick);
> -		dev_err(dev, "usbhost_ick failed error:%d\n", ret);
> -		goto err_end;
> -	}
> -
> -	omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
> -	if (IS_ERR(omap->usbhost_hs_fck)) {
> -		ret = PTR_ERR(omap->usbhost_hs_fck);
> -		dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
> -		goto err_usbhost_ick;
> -	}
> -
> -	omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
> -	if (IS_ERR(omap->usbhost_fs_fck)) {
> -		ret = PTR_ERR(omap->usbhost_fs_fck);
> -		dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
> -		goto err_usbhost_hs_fck;
> -	}
> -
> -	omap->usbtll_fck = clk_get(dev, "usbtll_fck");
> -	if (IS_ERR(omap->usbtll_fck)) {
> -		ret = PTR_ERR(omap->usbtll_fck);
> -		dev_err(dev, "usbtll_fck failed error:%d\n", ret);
> -		goto err_usbhost_fs_fck;
> -	}
> -
> -	omap->usbtll_ick = clk_get(dev, "usbtll_ick");
> -	if (IS_ERR(omap->usbtll_ick)) {
> -		ret = PTR_ERR(omap->usbtll_ick);
> -		dev_err(dev, "usbtll_ick failed error:%d\n", ret);
> -		goto err_usbtll_fck;
> -	}
> -
> -	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
> -	if (IS_ERR(omap->utmi_p1_fck)) {
> -		ret = PTR_ERR(omap->utmi_p1_fck);
> -		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
> -		goto err_usbtll_ick;
> -	}
> -
> -	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
> -	if (IS_ERR(omap->xclk60mhsp1_ck)) {
> -		ret = PTR_ERR(omap->xclk60mhsp1_ck);
> -		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
> -		goto err_utmi_p1_fck;
> -	}
> -
> -	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
> -	if (IS_ERR(omap->utmi_p2_fck)) {
> -		ret = PTR_ERR(omap->utmi_p2_fck);
> -		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
> -		goto err_xclk60mhsp1_ck;
> -	}
> -
> -	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
> -	if (IS_ERR(omap->xclk60mhsp2_ck)) {
> -		ret = PTR_ERR(omap->xclk60mhsp2_ck);
> -		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
> -		goto err_utmi_p2_fck;
> -	}
> -
> -	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
> -	if (IS_ERR(omap->usbhost_p1_fck)) {
> -		ret = PTR_ERR(omap->usbhost_p1_fck);
> -		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
> -		goto err_xclk60mhsp2_ck;
> -	}
> -
> -	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
> -	if (IS_ERR(omap->usbtll_p1_fck)) {
> -		ret = PTR_ERR(omap->usbtll_p1_fck);
> -		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
> -		goto err_usbhost_p1_fck;
> -	}
> -
> -	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
> -	if (IS_ERR(omap->usbhost_p2_fck)) {
> -		ret = PTR_ERR(omap->usbhost_p2_fck);
> -		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
> -		goto err_usbtll_p1_fck;
> -	}
> -
> -	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
> -	if (IS_ERR(omap->usbtll_p2_fck)) {
> -		ret = PTR_ERR(omap->usbtll_p2_fck);
> -		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
> -		goto err_usbhost_p2_fck;
> -	}
> -
> -	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
> -	if (IS_ERR(omap->init_60m_fclk)) {
> -		ret = PTR_ERR(omap->init_60m_fclk);
> -		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
> -		goto err_usbtll_p2_fck;
> -	}
> -
> -	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
> -	if (!res) {
> -		dev_err(dev, "UHH EHCI get resource failed\n");
> -		ret = -ENODEV;
> -		goto err_init_60m_fclk;
> -	}
> -
> -	omap->uhh_base = ioremap(res->start, resource_size(res));
> -	if (!omap->uhh_base) {
> -		dev_err(dev, "UHH ioremap failed\n");
> -		ret = -ENOMEM;
> -		goto err_init_60m_fclk;
> -	}
> -
> -	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
> -	if (!res) {
> -		dev_err(dev, "UHH EHCI get resource failed\n");
> -		ret = -ENODEV;
> -		goto err_tll;
> -	}
> -
> -	omap->tll_base = ioremap(res->start, resource_size(res));
> -	if (!omap->tll_base) {
> -		dev_err(dev, "TLL ioremap failed\n");
> -		ret = -ENOMEM;
> -		goto err_tll;
> -	}
> -
> -	platform_set_drvdata(pdev, omap);
> -
> -	ret = omap_usbhs_alloc_children(pdev);
> -	if (ret) {
> -		dev_err(dev, "omap_usbhs_alloc_children failed\n");
> -		goto err_alloc;
> -	}
> -
> -	goto end_probe;
> -
> -err_alloc:
> -	iounmap(omap->tll_base);
> -
> -err_tll:
> -	iounmap(omap->uhh_base);
> -
> -err_init_60m_fclk:
> -	clk_put(omap->init_60m_fclk);
> -
> -err_usbtll_p2_fck:
> -	clk_put(omap->usbtll_p2_fck);
> -
> -err_usbhost_p2_fck:
> -	clk_put(omap->usbhost_p2_fck);
> -
> -err_usbtll_p1_fck:
> -	clk_put(omap->usbtll_p1_fck);
> -
> -err_usbhost_p1_fck:
> -	clk_put(omap->usbhost_p1_fck);
> -
> -err_xclk60mhsp2_ck:
> -	clk_put(omap->xclk60mhsp2_ck);
> -
> -err_utmi_p2_fck:
> -	clk_put(omap->utmi_p2_fck);
> -
> -err_xclk60mhsp1_ck:
> -	clk_put(omap->xclk60mhsp1_ck);
> -
> -err_utmi_p1_fck:
> -	clk_put(omap->utmi_p1_fck);
> -
> -err_usbtll_ick:
> -	clk_put(omap->usbtll_ick);
> -
> -err_usbtll_fck:
> -	clk_put(omap->usbtll_fck);
> -
> -err_usbhost_fs_fck:
> -	clk_put(omap->usbhost_fs_fck);
> -
> -err_usbhost_hs_fck:
> -	clk_put(omap->usbhost_hs_fck);
> -
> -err_usbhost_ick:
> -	clk_put(omap->usbhost_ick);
> -
> -err_end:
> -	kfree(omap);
> -
> -end_probe:
> -	return ret;
> -}
> -
> -/**
> - * usbhs_omap_remove - shutdown processing for UHH&  TLL HCDs
> - * @pdev: USB Host Controller being removed
> - *
> - * Reverses the effect of usbhs_omap_probe().
> - */
> -static int __devexit usbhs_omap_remove(struct platform_device *pdev)
> -{
> -	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
> -
> -	if (omap->count != 0) {
> -		dev_err(&pdev->dev,
> -			"Either EHCI or OHCI is still using usbhs core\n");
> -		return -EBUSY;
> -	}
> -
> -	iounmap(omap->tll_base);
> -	iounmap(omap->uhh_base);
> -	clk_put(omap->init_60m_fclk);
> -	clk_put(omap->usbtll_p2_fck);
> -	clk_put(omap->usbhost_p2_fck);
> -	clk_put(omap->usbtll_p1_fck);
> -	clk_put(omap->usbhost_p1_fck);
> -	clk_put(omap->xclk60mhsp2_ck);
> -	clk_put(omap->utmi_p2_fck);
> -	clk_put(omap->xclk60mhsp1_ck);
> -	clk_put(omap->utmi_p1_fck);
> -	clk_put(omap->usbtll_ick);
> -	clk_put(omap->usbtll_fck);
> -	clk_put(omap->usbhost_fs_fck);
> -	clk_put(omap->usbhost_hs_fck);
> -	clk_put(omap->usbhost_ick);
> -	kfree(omap);
> -
> -	return 0;
> -}
> -
>   static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
>   {
>   	switch (pmode) {
> @@ -687,30 +419,79 @@ static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
>   	}
>   }
>
> -static int usbhs_enable(struct device *dev)
> +static int usbhs_runtime_resume(struct device *dev)
>   {
>   	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
>   	struct usbhs_omap_platform_data	*pdata =&omap->platdata;
> -	unsigned long			flags = 0;
> -	int				ret = 0;
> -	unsigned long			timeout;
> -	unsigned			reg;
> +	unsigned long			flags;
> +
> +	dev_dbg(dev, "usbhs_runtime_resume\n");
> +
> +	if (!pdata) {
> +		dev_dbg(dev, "missing platform_data\n");
> +		return  -ENODEV;
> +	}
> +
> +	spin_lock_irqsave(&omap->lock, flags);
> +
> +	if (is_ehci_tll_mode(pdata->port_mode[0])) {
> +		clk_enable(omap->usbhost_p1_fck);
> +		clk_enable(omap->usbtll_p1_fck);
> +	}
> +	if (is_ehci_tll_mode(pdata->port_mode[1])) {
> +		clk_enable(omap->usbhost_p2_fck);
> +		clk_enable(omap->usbtll_p2_fck);
> +	}
> +	clk_enable(omap->utmi_p1_fck);
> +	clk_enable(omap->utmi_p2_fck);
> +
> +	spin_unlock_irqrestore(&omap->lock, flags);
> +
> +	return 0;
> +}
> +
> +static int usbhs_runtime_suspend(struct device *dev)
> +{
> +	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
> +	struct usbhs_omap_platform_data	*pdata =&omap->platdata;
> +	unsigned long			flags;
> +
> +	dev_dbg(dev, "usbhs_runtime_suspend\n");
>
> -	dev_dbg(dev, "starting TI HSUSB Controller\n");
>   	if (!pdata) {
>   		dev_dbg(dev, "missing platform_data\n");
>   		return  -ENODEV;
>   	}
>
>   	spin_lock_irqsave(&omap->lock, flags);
> -	if (omap->count>  0)
> -		goto end_count;
>
> -	clk_enable(omap->usbhost_ick);
> -	clk_enable(omap->usbhost_hs_fck);
> -	clk_enable(omap->usbhost_fs_fck);
> -	clk_enable(omap->usbtll_fck);
> -	clk_enable(omap->usbtll_ick);
> +	if (is_ehci_tll_mode(pdata->port_mode[0])) {
> +		clk_disable(omap->usbhost_p1_fck);
> +		clk_disable(omap->usbtll_p1_fck);
> +	}
> +	if (is_ehci_tll_mode(pdata->port_mode[1])) {
> +		clk_disable(omap->usbhost_p2_fck);
> +		clk_disable(omap->usbtll_p2_fck);
> +	}
> +	clk_disable(omap->utmi_p2_fck);
> +	clk_disable(omap->utmi_p1_fck);
> +
> +	spin_unlock_irqrestore(&omap->lock, flags);
> +
> +	return 0;
> +}
> +
> +static void omap_usbhs_init(struct device *dev)
Since it is called only at init the it could be placed in init section.
> +{
> +	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
> +	struct usbhs_omap_platform_data	*pdata =&omap->platdata;
> +	unsigned long			flags;
> +	unsigned			reg;
> +
> +	dev_dbg(dev, "starting TI HSUSB Controller\n");
> +
> +	pm_runtime_get_sync(dev);
> +	spin_lock_irqsave(&omap->lock, flags);
>
>   	if (pdata->ehci_data->phy_reset) {
>   		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
> @@ -734,50 +515,6 @@ static int usbhs_enable(struct device *dev)
>   	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
>   	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
>
> -	/* perform TLL soft reset, and wait until reset is complete */
> -	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
> -			OMAP_USBTLL_SYSCONFIG_SOFTRESET);
> -
> -	/* Wait for TLL reset to complete */
> -	timeout = jiffies + msecs_to_jiffies(1000);
> -	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
> -			&  OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
> -		cpu_relax();
> -
> -		if (time_after(jiffies, timeout)) {
> -			dev_dbg(dev, "operation timed out\n");
> -			ret = -EINVAL;
> -			goto err_tll;
> -		}
> -	}
> -
> -	dev_dbg(dev, "TLL RESET DONE\n");
> -
> -	/* (1<<3) = no idle mode only for initial debugging */
> -	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
> -			OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
> -			OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
> -			OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
> -
> -	/* Put UHH in NoIdle/NoStandby mode */
> -	reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
> -	if (is_omap_usbhs_rev1(omap)) {
> -		reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
> -				| OMAP_UHH_SYSCONFIG_SIDLEMODE
> -				| OMAP_UHH_SYSCONFIG_CACTIVITY
> -				| OMAP_UHH_SYSCONFIG_MIDLEMODE);
> -		reg&= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
> -
> -
> -	} else if (is_omap_usbhs_rev2(omap)) {
> -		reg&= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
> -		reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
> -		reg&= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
> -		reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
> -	}
> -
> -	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
> -
>   	reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
>   	/* setup ULPI bypass and burst configurations */
>   	reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
> @@ -823,49 +560,6 @@ static int usbhs_enable(struct device *dev)
>   		reg&= ~OMAP4_P1_MODE_CLEAR;
>   		reg&= ~OMAP4_P2_MODE_CLEAR;
>
> -		if (is_ehci_phy_mode(pdata->port_mode[0])) {
> -			ret = clk_set_parent(omap->utmi_p1_fck,
> -						omap->xclk60mhsp1_ck);
> -			if (ret != 0) {
> -				dev_err(dev, "xclk60mhsp1_ck set parent"
> -				"failed error:%d\n", ret);
> -				goto err_tll;
> -			}
> -		} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
> -			ret = clk_set_parent(omap->utmi_p1_fck,
> -						omap->init_60m_fclk);
> -			if (ret != 0) {
> -				dev_err(dev, "init_60m_fclk set parent"
> -				"failed error:%d\n", ret);
> -				goto err_tll;
> -			}
> -			clk_enable(omap->usbhost_p1_fck);
> -			clk_enable(omap->usbtll_p1_fck);
> -		}
> -
> -		if (is_ehci_phy_mode(pdata->port_mode[1])) {
> -			ret = clk_set_parent(omap->utmi_p2_fck,
> -						omap->xclk60mhsp2_ck);
> -			if (ret != 0) {
> -				dev_err(dev, "xclk60mhsp1_ck set parent"
> -					"failed error:%d\n", ret);
> -				goto err_tll;
> -			}
> -		} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
> -			ret = clk_set_parent(omap->utmi_p2_fck,
> -						omap->init_60m_fclk);
> -			if (ret != 0) {
> -				dev_err(dev, "init_60m_fclk set parent"
> -				"failed error:%d\n", ret);
> -				goto err_tll;
> -			}
> -			clk_enable(omap->usbhost_p2_fck);
> -			clk_enable(omap->usbtll_p2_fck);
> -		}
> -
> -		clk_enable(omap->utmi_p1_fck);
> -		clk_enable(omap->utmi_p2_fck);
> -
>   		if (is_ehci_tll_mode(pdata->port_mode[0]) ||
>   			(is_ohci_port(pdata->port_mode[0])))
>   			reg |= OMAP4_P1_MODE_TLL;
> @@ -911,12 +605,15 @@ static int usbhs_enable(struct device *dev)
>   				(pdata->ehci_data->reset_gpio_port[1], 1);
>   	}
>
> -end_count:
> -	omap->count++;
>   	spin_unlock_irqrestore(&omap->lock, flags);
> -	return 0;
> +	pm_runtime_put_sync(dev);
> +}
> +
> +static void omap_usbhs_deinit(struct device *dev)
> +{
> +	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
> +	struct usbhs_omap_platform_data	*pdata =&omap->platdata;
>
> -err_tll:
>   	if (pdata->ehci_data->phy_reset) {
>   		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
>   			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
> @@ -924,123 +621,257 @@ err_tll:
>   		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
>   			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
>   	}
> -
> -	clk_disable(omap->usbtll_ick);
> -	clk_disable(omap->usbtll_fck);
> -	clk_disable(omap->usbhost_fs_fck);
> -	clk_disable(omap->usbhost_hs_fck);
> -	clk_disable(omap->usbhost_ick);
> -	spin_unlock_irqrestore(&omap->lock, flags);
> -	return ret;
>   }
>
> -static void usbhs_disable(struct device *dev)
> +
> +/**
> + * usbhs_omap_probe - initialize TI-based HCDs
> + *
> + * Allocates basic resources for this USB host controller.
> + */
> +static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>   {
> -	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
> -	struct usbhs_omap_platform_data	*pdata =&omap->platdata;
> -	unsigned long			flags = 0;
> -	unsigned long			timeout;
> +	struct device			*dev =&pdev->dev;
> +	struct usbhs_omap_platform_data	*pdata = dev->platform_data;
> +	struct usbhs_hcd_omap		*omap;
> +	struct resource			*res;
> +	int				ret = 0;
> +	int				i;
>
> -	dev_dbg(dev, "stopping TI HSUSB Controller\n");
> +	if (!pdata) {
> +		dev_err(dev, "Missing platform data\n");
> +		ret = -ENOMEM;
> +		goto end_probe;
> +	}
>
> -	spin_lock_irqsave(&omap->lock, flags);
> +	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
> +	if (!omap) {
> +		dev_err(dev, "Memory allocation failed\n");
> +		ret = -ENOMEM;
> +		goto end_probe;
> +	}
>
> -	if (omap->count == 0)
> -		goto end_disble;
> +	spin_lock_init(&omap->lock);
>
> -	omap->count--;
> +	for (i = 0; i<  OMAP3_HS_USB_PORTS; i++)
> +		omap->platdata.port_mode[i] = pdata->port_mode[i];
>
> -	if (omap->count != 0)
> -		goto end_disble;
> +	omap->platdata.ehci_data = pdata->ehci_data;
> +	omap->platdata.ohci_data = pdata->ohci_data;
>
> -	/* Reset OMAP modules for insmod/rmmod to work */
> -	usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
> -			is_omap_usbhs_rev2(omap) ?
> -			OMAP4_UHH_SYSCONFIG_SOFTRESET :
> -			OMAP_UHH_SYSCONFIG_SOFTRESET);
> +	pm_runtime_enable(dev);
>
> -	timeout = jiffies + msecs_to_jiffies(100);
> -	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
> -				&  (1<<  0))) {
> -		cpu_relax();
> +	omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
> +	if (IS_ERR(omap->utmi_p1_fck)) {
> +		ret = PTR_ERR(omap->utmi_p1_fck);
> +		dev_err(dev, "utmi_p1_gfclk failed error:%d\n",	ret);
> +		goto err_end;
> +	}
>
> -		if (time_after(jiffies, timeout))
> -			dev_dbg(dev, "operation timed out\n");
> +	omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
> +	if (IS_ERR(omap->xclk60mhsp1_ck)) {
> +		ret = PTR_ERR(omap->xclk60mhsp1_ck);
> +		dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
> +		goto err_utmi_p1_fck;
> +	}
> +
> +	omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
> +	if (IS_ERR(omap->utmi_p2_fck)) {
> +		ret = PTR_ERR(omap->utmi_p2_fck);
> +		dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
> +		goto err_xclk60mhsp1_ck;
> +	}
> +
> +	omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
> +	if (IS_ERR(omap->xclk60mhsp2_ck)) {
> +		ret = PTR_ERR(omap->xclk60mhsp2_ck);
> +		dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
> +		goto err_utmi_p2_fck;
>   	}
>
> -	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
> -				&  (1<<  1))) {
> -		cpu_relax();
> +	omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
> +	if (IS_ERR(omap->usbhost_p1_fck)) {
> +		ret = PTR_ERR(omap->usbhost_p1_fck);
> +		dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
> +		goto err_xclk60mhsp2_ck;
> +	}
>
> -		if (time_after(jiffies, timeout))
> -			dev_dbg(dev, "operation timed out\n");
> +	omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
> +	if (IS_ERR(omap->usbtll_p1_fck)) {
> +		ret = PTR_ERR(omap->usbtll_p1_fck);
> +		dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
> +		goto err_usbhost_p1_fck;
> +	}
> +
> +	omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
> +	if (IS_ERR(omap->usbhost_p2_fck)) {
> +		ret = PTR_ERR(omap->usbhost_p2_fck);
> +		dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
> +		goto err_usbtll_p1_fck;
>   	}
>
> -	while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
> -				&  (1<<  2))) {
> -		cpu_relax();
> +	omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
> +	if (IS_ERR(omap->usbtll_p2_fck)) {
> +		ret = PTR_ERR(omap->usbtll_p2_fck);
> +		dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
> +		goto err_usbhost_p2_fck;
> +	}
>
> -		if (time_after(jiffies, timeout))
> -			dev_dbg(dev, "operation timed out\n");
> +	omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
> +	if (IS_ERR(omap->init_60m_fclk)) {
> +		ret = PTR_ERR(omap->init_60m_fclk);
> +		dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
> +		goto err_usbtll_p2_fck;
>   	}
>
> -	usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1<<  1));
> +	if (is_ehci_phy_mode(pdata->port_mode[0])) {
> +		/* for OMAP3 , the clk set paretn fails */
> +		ret = clk_set_parent(omap->utmi_p1_fck,
> +					omap->xclk60mhsp1_ck);
> +		if (ret != 0)
> +			dev_err(dev, "xclk60mhsp1_ck set parent"
> +				"failed error:%d\n", ret);
> +	} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
> +		ret = clk_set_parent(omap->utmi_p1_fck,
> +					omap->init_60m_fclk);
> +		if (ret != 0)
> +			dev_err(dev, "init_60m_fclk set parent"
> +				"failed error:%d\n", ret);
> +	}
>
> -	while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
> -				&  (1<<  0))) {
> -		cpu_relax();
> +	if (is_ehci_phy_mode(pdata->port_mode[1])) {
> +		ret = clk_set_parent(omap->utmi_p2_fck,
> +					omap->xclk60mhsp2_ck);
> +		if (ret != 0)
> +			dev_err(dev, "xclk60mhsp2_ck set parent"
> +					"failed error:%d\n", ret);
> +	} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
> +		ret = clk_set_parent(omap->utmi_p2_fck,
> +						omap->init_60m_fclk);
> +		if (ret != 0)
> +			dev_err(dev, "init_60m_fclk set parent"
> +				"failed error:%d\n", ret);
> +	}
>
> -		if (time_after(jiffies, timeout))
> -			dev_dbg(dev, "operation timed out\n");
> +	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
> +	if (!res) {
> +		dev_err(dev, "UHH EHCI get resource failed\n");
> +		ret = -ENODEV;
> +		goto err_init_60m_fclk;
>   	}
>
> -	if (is_omap_usbhs_rev2(omap)) {
> -		if (is_ehci_tll_mode(pdata->port_mode[0]))
> -			clk_disable(omap->usbtll_p1_fck);
> -		if (is_ehci_tll_mode(pdata->port_mode[1]))
> -			clk_disable(omap->usbtll_p2_fck);
> -		clk_disable(omap->utmi_p2_fck);
> -		clk_disable(omap->utmi_p1_fck);
> +	omap->uhh_base = ioremap(res->start, resource_size(res));
> +	if (!omap->uhh_base) {
> +		dev_err(dev, "UHH ioremap failed\n");
> +		ret = -ENOMEM;
> +		goto err_init_60m_fclk;
>   	}
>
> -	clk_disable(omap->usbtll_ick);
> -	clk_disable(omap->usbtll_fck);
> -	clk_disable(omap->usbhost_fs_fck);
> -	clk_disable(omap->usbhost_hs_fck);
> -	clk_disable(omap->usbhost_ick);
> +	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
> +	if (!res) {
> +		dev_err(dev, "UHH EHCI get resource failed\n");
> +		ret = -ENODEV;
> +		goto err_tll;
> +	}
>
> -	/* The gpio_free migh sleep; so unlock the spinlock */
> -	spin_unlock_irqrestore(&omap->lock, flags);
> +	omap->tll_base = ioremap(res->start, resource_size(res));
> +	if (!omap->tll_base) {
> +		dev_err(dev, "TLL ioremap failed\n");
> +		ret = -ENOMEM;
> +		goto err_tll;
> +	}
>
> -	if (pdata->ehci_data->phy_reset) {
> -		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
> -			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
> +	platform_set_drvdata(pdev, omap);
>
> -		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
> -			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
> +	ret = omap_usbhs_alloc_children(pdev);
> +	if (ret) {
> +		dev_err(dev, "omap_usbhs_alloc_children failed\n");
> +		goto err_alloc;
>   	}
> -	return;
>
> -end_disble:
> -	spin_unlock_irqrestore(&omap->lock, flags);
> -}
> +	omap_usbhs_init(dev);
>
> -int omap_usbhs_enable(struct device *dev)
> -{
> -	return  usbhs_enable(dev->parent);
> +	goto end_probe;
> +
> +err_alloc:
> +	iounmap(omap->tll_base);
> +
> +err_tll:
> +	iounmap(omap->uhh_base);
> +
> +err_init_60m_fclk:
> +	clk_put(omap->init_60m_fclk);
> +
> +err_usbtll_p2_fck:
> +	clk_put(omap->usbtll_p2_fck);
> +
> +err_usbhost_p2_fck:
> +	clk_put(omap->usbhost_p2_fck);
> +
> +err_usbtll_p1_fck:
> +	clk_put(omap->usbtll_p1_fck);
> +
> +err_usbhost_p1_fck:
> +	clk_put(omap->usbhost_p1_fck);
> +
> +err_xclk60mhsp2_ck:
> +	clk_put(omap->xclk60mhsp2_ck);
> +
> +err_utmi_p2_fck:
> +	clk_put(omap->utmi_p2_fck);
> +
> +err_xclk60mhsp1_ck:
> +	clk_put(omap->xclk60mhsp1_ck);
> +
> +err_utmi_p1_fck:
> +	clk_put(omap->utmi_p1_fck);
> +
> +err_end:
> +	pm_runtime_disable(dev);
> +	kfree(omap);
> +
> +end_probe:
> +	return ret;
>   }
> -EXPORT_SYMBOL_GPL(omap_usbhs_enable);
>
> -void omap_usbhs_disable(struct device *dev)
> +/**
> + * usbhs_omap_remove - shutdown processing for UHH&  TLL HCDs
> + * @pdev: USB Host Controller being removed
> + *
> + * Reverses the effect of usbhs_omap_probe().
> + */
> +static int __devexit usbhs_omap_remove(struct platform_device *pdev)
>   {
> -	usbhs_disable(dev->parent);
> +	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
> +
> +	omap_usbhs_deinit(&pdev->dev);
> +	iounmap(omap->tll_base);
> +	iounmap(omap->uhh_base);
> +	clk_put(omap->init_60m_fclk);
> +	clk_put(omap->usbtll_p2_fck);
> +	clk_put(omap->usbhost_p2_fck);
> +	clk_put(omap->usbtll_p1_fck);
> +	clk_put(omap->usbhost_p1_fck);
> +	clk_put(omap->xclk60mhsp2_ck);
> +	clk_put(omap->utmi_p2_fck);
> +	clk_put(omap->xclk60mhsp1_ck);
> +	clk_put(omap->utmi_p1_fck);
> +	pm_runtime_disable(&pdev->dev);
> +	kfree(omap);
> +
> +	return 0;
>   }
> -EXPORT_SYMBOL_GPL(omap_usbhs_disable);
> +
> +static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
> +	.runtime_suspend	= usbhs_runtime_suspend,
> +	.runtime_resume		= usbhs_runtime_resume,
> +};
Could these be placed under a PM flag.

>
>   static struct platform_driver usbhs_omap_driver = {
>   	.driver = {
>   		.name		= (char *)usbhs_driver_name,
>   		.owner		= THIS_MODULE,
> +		.pm		=&usbhsomap_dev_pm_ops,
>   	},
>   	.remove		= __exit_p(usbhs_omap_remove),
>   };
> diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
> index 4524032..82cd3ea 100644
> --- a/drivers/usb/host/ehci-omap.c
> +++ b/drivers/usb/host/ehci-omap.c
> @@ -41,6 +41,7 @@
>   #include<linux/usb/ulpi.h>
>   #include<plat/usb.h>
>   #include<linux/regulator/consumer.h>
> +#include<linux/pm_runtime.h>
>
>   /* EHCI Register Set */
>   #define EHCI_INSNREG04					(0xA0)
> @@ -190,11 +191,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
>   		}
>   	}
>
> -	ret = omap_usbhs_enable(dev);
> -	if (ret) {
> -		dev_err(dev, "failed to start usbhs with err %d\n", ret);
> -		goto err_enable;
> -	}
> +	pm_runtime_enable(dev);
> +	pm_runtime_get_sync(dev);
>
>   	/*
>   	 * An undocumented "feature" in the OMAP3 EHCI controller,
> @@ -240,11 +238,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
>   	return 0;
>
>   err_add_hcd:
> -	omap_usbhs_disable(dev);
> -
> -err_enable:
>   	disable_put_regulator(pdata);
> -	usb_put_hcd(hcd);
> +	pm_runtime_put_sync(dev);
>
>   err_io:
>   	iounmap(regs);
> @@ -266,10 +261,12 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev)
>   	struct usb_hcd *hcd	= dev_get_drvdata(dev);
>
>   	usb_remove_hcd(hcd);
> -	omap_usbhs_disable(dev);
>   	disable_put_regulator(dev->platform_data);
>   	iounmap(hcd->regs);
>   	usb_put_hcd(hcd);
> +	pm_runtime_put_sync(dev);
> +	pm_runtime_disable(dev);
> +
>   	return 0;
>   }
>
> diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
> index 6048f2f..6cfedaf 100644
> --- a/drivers/usb/host/ohci-omap3.c
> +++ b/drivers/usb/host/ohci-omap3.c
> @@ -31,6 +31,7 @@
>
>   #include<linux/platform_device.h>
>   #include<plat/usb.h>
> +#include<linux/pm_runtime.h>
>
>   /*-------------------------------------------------------------------------*/
>
> @@ -134,7 +135,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
>   	int			irq;
>
>   	if (usb_disabled())
> -		goto err_end;
> +		return -ENODEV;
>
>   	if (!dev->parent) {
>   		dev_err(dev, "Missing parent device\n");
> @@ -172,11 +173,8 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
>   	hcd->rsrc_len = resource_size(res);
>   	hcd->regs =  regs;
>
> -	ret = omap_usbhs_enable(dev);
> -	if (ret) {
> -		dev_dbg(dev, "failed to start ohci\n");
> -		goto err_end;
> -	}
> +	pm_runtime_enable(dev);
> +	pm_runtime_get_sync(dev);
>
>   	ohci_hcd_init(hcd_to_ohci(hcd));
>
> @@ -189,9 +187,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
>   	return 0;
>
>   err_add_hcd:
> -	omap_usbhs_disable(dev);
> -
> -err_end:
> +	pm_runtime_put_sync(dev);
>   	usb_put_hcd(hcd);
>
>   err_io:
> @@ -220,9 +216,9 @@ static int __devexit ohci_hcd_omap3_remove(struct platform_device *pdev)
>
>   	iounmap(hcd->regs);
>   	usb_remove_hcd(hcd);
> -	omap_usbhs_disable(dev);
> +	pm_runtime_put_sync(dev);
> +	pm_runtime_disable(dev);
>   	usb_put_hcd(hcd);
> -
>   	return 0;
>   }
>

Re: [PATCH 5/5 v7] mfd: omap: usb: Runtime PM support

[Munegowda, Keshava]

On Thu, Aug 25, 2011 at 12:03 PM, Shubhrajyoti <shubhrajyoti@ti.com> wrote:
> Hi Keshav,
> Some minor comments
>
> On Wednesday 24 August 2011 08:01 PM, Keshava Munegowda wrote:
>>
>> From: Keshava Munegowda<Keshava_mgowda@ti.com>
>>
>> The usbhs core driver does not enable/disable the interface and
>> functional clocks; These clocks are handled by hwmod and runtime pm,
>> hence instead of the clock enable/disable, the runtime pm APIS are
>> used. however,the port clocks are handled by the usbhs core.
>>
>> Signed-off-by: Keshava Munegowda<keshava_mgowda@ti.com>
>> ---
>>  arch/arm/plat-omap/include/plat/usb.h |    3 -
>>  drivers/mfd/omap-usb-host.c           |  731
>> +++++++++++++--------------------
>>  drivers/usb/host/ehci-omap.c          |   17 +-
>>  drivers/usb/host/ohci-omap3.c         |   18 +-
>>  4 files changed, 295 insertions(+), 474 deletions(-)
>>
>> diff --git a/arch/arm/plat-omap/include/plat/usb.h
>> b/arch/arm/plat-omap/include/plat/usb.h
>> index 17d3c93..2b66dc2 100644
>> --- a/arch/arm/plat-omap/include/plat/usb.h
>> +++ b/arch/arm/plat-omap/include/plat/usb.h
>> @@ -100,9 +100,6 @@ extern void usb_musb_init(struct omap_musb_board_data
>> *board_data);
>>
>>  extern void usbhs_init(const struct usbhs_omap_board_data *pdata);
>>
>> -extern int omap_usbhs_enable(struct device *dev);
>> -extern void omap_usbhs_disable(struct device *dev);
>> -
>>  extern int omap4430_phy_power(struct device *dev, int ID, int on);
>>  extern int omap4430_phy_set_clk(struct device *dev, int on);
>>  extern int omap4430_phy_init(struct device *dev);
>> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
>> index 9c2da29..e6f3b01 100644
>> --- a/drivers/mfd/omap-usb-host.c
>> +++ b/drivers/mfd/omap-usb-host.c
>> @@ -26,6 +26,7 @@
>>  #include<linux/spinlock.h>
>>  #include<linux/gpio.h>
>>  #include<plat/usb.h>
>> +#include<linux/pm_runtime.h>
>>
>>  #define USBHS_DRIVER_NAME     "usbhs_omap"
>>  #define OMAP_EHCI_DEVICE      "ehci-omap"
>> @@ -146,9 +147,6 @@
>>
>>
>>  struct usbhs_hcd_omap {
>> -       struct clk                      *usbhost_ick;
>> -       struct clk                      *usbhost_hs_fck;
>> -       struct clk                      *usbhost_fs_fck;
>>        struct clk                      *xclk60mhsp1_ck;
>>        struct clk                      *xclk60mhsp2_ck;
>>        struct clk                      *utmi_p1_fck;
>> @@ -158,8 +156,6 @@ struct usbhs_hcd_omap {
>>        struct clk                      *usbhost_p2_fck;
>>        struct clk                      *usbtll_p2_fck;
>>        struct clk                      *init_60m_fclk;
>> -       struct clk                      *usbtll_fck;
>> -       struct clk                      *usbtll_ick;
>>
>>        void __iomem                    *uhh_base;
>>        void __iomem                    *tll_base;
>> @@ -168,7 +164,6 @@ struct usbhs_hcd_omap {
>>
>>        u32                             usbhs_rev;
>>        spinlock_t                      lock;
>> -       int                             count;
>>  };
>>
>>  /*-------------------------------------------------------------------------*/
>>
>> @@ -318,269 +313,6 @@ err_end:
>>        return ret;
>>  }
>>
>> -/**
>> - * usbhs_omap_probe - initialize TI-based HCDs
>> - *
>> - * Allocates basic resources for this USB host controller.
>> - */
>> -static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>> -{
>> -       struct device                   *dev =&pdev->dev;
>> -       struct usbhs_omap_platform_data *pdata = dev->platform_data;
>> -       struct usbhs_hcd_omap           *omap;
>> -       struct resource                 *res;
>> -       int                             ret = 0;
>> -       int                             i;
>> -
>> -       if (!pdata) {
>> -               dev_err(dev, "Missing platform data\n");
>> -               ret = -ENOMEM;
>> -               goto end_probe;
>> -       }
>> -
>> -       omap = kzalloc(sizeof(*omap), GFP_KERNEL);
>> -       if (!omap) {
>> -               dev_err(dev, "Memory allocation failed\n");
>> -               ret = -ENOMEM;
>> -               goto end_probe;
>> -       }
>> -
>> -       spin_lock_init(&omap->lock);
>> -
>> -       for (i = 0; i<  OMAP3_HS_USB_PORTS; i++)
>> -               omap->platdata.port_mode[i] = pdata->port_mode[i];
>> -
>> -       omap->platdata.ehci_data = pdata->ehci_data;
>> -       omap->platdata.ohci_data = pdata->ohci_data;
>> -
>> -       omap->usbhost_ick = clk_get(dev, "usbhost_ick");
>> -       if (IS_ERR(omap->usbhost_ick)) {
>> -               ret =  PTR_ERR(omap->usbhost_ick);
>> -               dev_err(dev, "usbhost_ick failed error:%d\n", ret);
>> -               goto err_end;
>> -       }
>> -
>> -       omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
>> -       if (IS_ERR(omap->usbhost_hs_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_hs_fck);
>> -               dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
>> -               goto err_usbhost_ick;
>> -       }
>> -
>> -       omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
>> -       if (IS_ERR(omap->usbhost_fs_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_fs_fck);
>> -               dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
>> -               goto err_usbhost_hs_fck;
>> -       }
>> -
>> -       omap->usbtll_fck = clk_get(dev, "usbtll_fck");
>> -       if (IS_ERR(omap->usbtll_fck)) {
>> -               ret = PTR_ERR(omap->usbtll_fck);
>> -               dev_err(dev, "usbtll_fck failed error:%d\n", ret);
>> -               goto err_usbhost_fs_fck;
>> -       }
>> -
>> -       omap->usbtll_ick = clk_get(dev, "usbtll_ick");
>> -       if (IS_ERR(omap->usbtll_ick)) {
>> -               ret = PTR_ERR(omap->usbtll_ick);
>> -               dev_err(dev, "usbtll_ick failed error:%d\n", ret);
>> -               goto err_usbtll_fck;
>> -       }
>> -
>> -       omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
>> -       if (IS_ERR(omap->utmi_p1_fck)) {
>> -               ret = PTR_ERR(omap->utmi_p1_fck);
>> -               dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
>> -               goto err_usbtll_ick;
>> -       }
>> -
>> -       omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
>> -       if (IS_ERR(omap->xclk60mhsp1_ck)) {
>> -               ret = PTR_ERR(omap->xclk60mhsp1_ck);
>> -               dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
>> -               goto err_utmi_p1_fck;
>> -       }
>> -
>> -       omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
>> -       if (IS_ERR(omap->utmi_p2_fck)) {
>> -               ret = PTR_ERR(omap->utmi_p2_fck);
>> -               dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
>> -               goto err_xclk60mhsp1_ck;
>> -       }
>> -
>> -       omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
>> -       if (IS_ERR(omap->xclk60mhsp2_ck)) {
>> -               ret = PTR_ERR(omap->xclk60mhsp2_ck);
>> -               dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
>> -               goto err_utmi_p2_fck;
>> -       }
>> -
>> -       omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
>> -       if (IS_ERR(omap->usbhost_p1_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_p1_fck);
>> -               dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
>> -               goto err_xclk60mhsp2_ck;
>> -       }
>> -
>> -       omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
>> -       if (IS_ERR(omap->usbtll_p1_fck)) {
>> -               ret = PTR_ERR(omap->usbtll_p1_fck);
>> -               dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
>> -               goto err_usbhost_p1_fck;
>> -       }
>> -
>> -       omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
>> -       if (IS_ERR(omap->usbhost_p2_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_p2_fck);
>> -               dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
>> -               goto err_usbtll_p1_fck;
>> -       }
>> -
>> -       omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
>> -       if (IS_ERR(omap->usbtll_p2_fck)) {
>> -               ret = PTR_ERR(omap->usbtll_p2_fck);
>> -               dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
>> -               goto err_usbhost_p2_fck;
>> -       }
>> -
>> -       omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
>> -       if (IS_ERR(omap->init_60m_fclk)) {
>> -               ret = PTR_ERR(omap->init_60m_fclk);
>> -               dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
>> -               goto err_usbtll_p2_fck;
>> -       }
>> -
>> -       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
>> -       if (!res) {
>> -               dev_err(dev, "UHH EHCI get resource failed\n");
>> -               ret = -ENODEV;
>> -               goto err_init_60m_fclk;
>> -       }
>> -
>> -       omap->uhh_base = ioremap(res->start, resource_size(res));
>> -       if (!omap->uhh_base) {
>> -               dev_err(dev, "UHH ioremap failed\n");
>> -               ret = -ENOMEM;
>> -               goto err_init_60m_fclk;
>> -       }
>> -
>> -       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
>> -       if (!res) {
>> -               dev_err(dev, "UHH EHCI get resource failed\n");
>> -               ret = -ENODEV;
>> -               goto err_tll;
>> -       }
>> -
>> -       omap->tll_base = ioremap(res->start, resource_size(res));
>> -       if (!omap->tll_base) {
>> -               dev_err(dev, "TLL ioremap failed\n");
>> -               ret = -ENOMEM;
>> -               goto err_tll;
>> -       }
>> -
>> -       platform_set_drvdata(pdev, omap);
>> -
>> -       ret = omap_usbhs_alloc_children(pdev);
>> -       if (ret) {
>> -               dev_err(dev, "omap_usbhs_alloc_children failed\n");
>> -               goto err_alloc;
>> -       }
>> -
>> -       goto end_probe;
>> -
>> -err_alloc:
>> -       iounmap(omap->tll_base);
>> -
>> -err_tll:
>> -       iounmap(omap->uhh_base);
>> -
>> -err_init_60m_fclk:
>> -       clk_put(omap->init_60m_fclk);
>> -
>> -err_usbtll_p2_fck:
>> -       clk_put(omap->usbtll_p2_fck);
>> -
>> -err_usbhost_p2_fck:
>> -       clk_put(omap->usbhost_p2_fck);
>> -
>> -err_usbtll_p1_fck:
>> -       clk_put(omap->usbtll_p1_fck);
>> -
>> -err_usbhost_p1_fck:
>> -       clk_put(omap->usbhost_p1_fck);
>> -
>> -err_xclk60mhsp2_ck:
>> -       clk_put(omap->xclk60mhsp2_ck);
>> -
>> -err_utmi_p2_fck:
>> -       clk_put(omap->utmi_p2_fck);
>> -
>> -err_xclk60mhsp1_ck:
>> -       clk_put(omap->xclk60mhsp1_ck);
>> -
>> -err_utmi_p1_fck:
>> -       clk_put(omap->utmi_p1_fck);
>> -
>> -err_usbtll_ick:
>> -       clk_put(omap->usbtll_ick);
>> -
>> -err_usbtll_fck:
>> -       clk_put(omap->usbtll_fck);
>> -
>> -err_usbhost_fs_fck:
>> -       clk_put(omap->usbhost_fs_fck);
>> -
>> -err_usbhost_hs_fck:
>> -       clk_put(omap->usbhost_hs_fck);
>> -
>> -err_usbhost_ick:
>> -       clk_put(omap->usbhost_ick);
>> -
>> -err_end:
>> -       kfree(omap);
>> -
>> -end_probe:
>> -       return ret;
>> -}
>> -
>> -/**
>> - * usbhs_omap_remove - shutdown processing for UHH&  TLL HCDs
>> - * @pdev: USB Host Controller being removed
>> - *
>> - * Reverses the effect of usbhs_omap_probe().
>> - */
>> -static int __devexit usbhs_omap_remove(struct platform_device *pdev)
>> -{
>> -       struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
>> -
>> -       if (omap->count != 0) {
>> -               dev_err(&pdev->dev,
>> -                       "Either EHCI or OHCI is still using usbhs
>> core\n");
>> -               return -EBUSY;
>> -       }
>> -
>> -       iounmap(omap->tll_base);
>> -       iounmap(omap->uhh_base);
>> -       clk_put(omap->init_60m_fclk);
>> -       clk_put(omap->usbtll_p2_fck);
>> -       clk_put(omap->usbhost_p2_fck);
>> -       clk_put(omap->usbtll_p1_fck);
>> -       clk_put(omap->usbhost_p1_fck);
>> -       clk_put(omap->xclk60mhsp2_ck);
>> -       clk_put(omap->utmi_p2_fck);
>> -       clk_put(omap->xclk60mhsp1_ck);
>> -       clk_put(omap->utmi_p1_fck);
>> -       clk_put(omap->usbtll_ick);
>> -       clk_put(omap->usbtll_fck);
>> -       clk_put(omap->usbhost_fs_fck);
>> -       clk_put(omap->usbhost_hs_fck);
>> -       clk_put(omap->usbhost_ick);
>> -       kfree(omap);
>> -
>> -       return 0;
>> -}
>> -
>>  static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
>>  {
>>        switch (pmode) {
>> @@ -687,30 +419,79 @@ static void usbhs_omap_tll_init(struct device *dev,
>> u8 tll_channel_count)
>>        }
>>  }
>>
>> -static int usbhs_enable(struct device *dev)
>> +static int usbhs_runtime_resume(struct device *dev)
>>  {
>>        struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>>        struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> -       unsigned long                   flags = 0;
>> -       int                             ret = 0;
>> -       unsigned long                   timeout;
>> -       unsigned                        reg;
>> +       unsigned long                   flags;
>> +
>> +       dev_dbg(dev, "usbhs_runtime_resume\n");
>> +
>> +       if (!pdata) {
>> +               dev_dbg(dev, "missing platform_data\n");
>> +               return  -ENODEV;
>> +       }
>> +
>> +       spin_lock_irqsave(&omap->lock, flags);
>> +
>> +       if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> +               clk_enable(omap->usbhost_p1_fck);
>> +               clk_enable(omap->usbtll_p1_fck);
>> +       }
>> +       if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> +               clk_enable(omap->usbhost_p2_fck);
>> +               clk_enable(omap->usbtll_p2_fck);
>> +       }
>> +       clk_enable(omap->utmi_p1_fck);
>> +       clk_enable(omap->utmi_p2_fck);
>> +
>> +       spin_unlock_irqrestore(&omap->lock, flags);
>> +
>> +       return 0;
>> +}
>> +
>> +static int usbhs_runtime_suspend(struct device *dev)
>> +{
>> +       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> +       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> +       unsigned long                   flags;
>> +
>> +       dev_dbg(dev, "usbhs_runtime_suspend\n");
>>
>> -       dev_dbg(dev, "starting TI HSUSB Controller\n");
>>        if (!pdata) {
>>                dev_dbg(dev, "missing platform_data\n");
>>                return  -ENODEV;
>>        }
>>
>>        spin_lock_irqsave(&omap->lock, flags);
>> -       if (omap->count>  0)
>> -               goto end_count;
>>
>> -       clk_enable(omap->usbhost_ick);
>> -       clk_enable(omap->usbhost_hs_fck);
>> -       clk_enable(omap->usbhost_fs_fck);
>> -       clk_enable(omap->usbtll_fck);
>> -       clk_enable(omap->usbtll_ick);
>> +       if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> +               clk_disable(omap->usbhost_p1_fck);
>> +               clk_disable(omap->usbtll_p1_fck);
>> +       }
>> +       if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> +               clk_disable(omap->usbhost_p2_fck);
>> +               clk_disable(omap->usbtll_p2_fck);
>> +       }
>> +       clk_disable(omap->utmi_p2_fck);
>> +       clk_disable(omap->utmi_p1_fck);
>> +
>> +       spin_unlock_irqrestore(&omap->lock, flags);
>> +
>> +       return 0;
>> +}
>> +
>> +static void omap_usbhs_init(struct device *dev)
>
> Since it is called only at init the it could be placed in init section.
>>
>> +{
>> +       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> +       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> +       unsigned long                   flags;
>> +       unsigned                        reg;
>> +
>> +       dev_dbg(dev, "starting TI HSUSB Controller\n");
>> +
>> +       pm_runtime_get_sync(dev);
>> +       spin_lock_irqsave(&omap->lock, flags);
>>
>>        if (pdata->ehci_data->phy_reset) {
>>                if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
>> @@ -734,50 +515,6 @@ static int usbhs_enable(struct device *dev)
>>        omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
>>        dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
>>
>> -       /* perform TLL soft reset, and wait until reset is complete */
>> -       usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
>> -                       OMAP_USBTLL_SYSCONFIG_SOFTRESET);
>> -
>> -       /* Wait for TLL reset to complete */
>> -       timeout = jiffies + msecs_to_jiffies(1000);
>> -       while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
>> -                       &  OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
>> -               cpu_relax();
>> -
>> -               if (time_after(jiffies, timeout)) {
>> -                       dev_dbg(dev, "operation timed out\n");
>> -                       ret = -EINVAL;
>> -                       goto err_tll;
>> -               }
>> -       }
>> -
>> -       dev_dbg(dev, "TLL RESET DONE\n");
>> -
>> -       /* (1<<3) = no idle mode only for initial debugging */
>> -       usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
>> -                       OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
>> -                       OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
>> -                       OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
>> -
>> -       /* Put UHH in NoIdle/NoStandby mode */
>> -       reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
>> -       if (is_omap_usbhs_rev1(omap)) {
>> -               reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
>> -                               | OMAP_UHH_SYSCONFIG_SIDLEMODE
>> -                               | OMAP_UHH_SYSCONFIG_CACTIVITY
>> -                               | OMAP_UHH_SYSCONFIG_MIDLEMODE);
>> -               reg&= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
>> -
>> -
>> -       } else if (is_omap_usbhs_rev2(omap)) {
>> -               reg&= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
>> -               reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
>> -               reg&= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
>> -               reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
>> -       }
>> -
>> -       usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
>> -
>>        reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
>>        /* setup ULPI bypass and burst configurations */
>>        reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
>> @@ -823,49 +560,6 @@ static int usbhs_enable(struct device *dev)
>>                reg&= ~OMAP4_P1_MODE_CLEAR;
>>                reg&= ~OMAP4_P2_MODE_CLEAR;
>>
>> -               if (is_ehci_phy_mode(pdata->port_mode[0])) {
>> -                       ret = clk_set_parent(omap->utmi_p1_fck,
>> -                                               omap->xclk60mhsp1_ck);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "xclk60mhsp1_ck set parent"
>> -                               "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -               } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> -                       ret = clk_set_parent(omap->utmi_p1_fck,
>> -                                               omap->init_60m_fclk);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "init_60m_fclk set parent"
>> -                               "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -                       clk_enable(omap->usbhost_p1_fck);
>> -                       clk_enable(omap->usbtll_p1_fck);
>> -               }
>> -
>> -               if (is_ehci_phy_mode(pdata->port_mode[1])) {
>> -                       ret = clk_set_parent(omap->utmi_p2_fck,
>> -                                               omap->xclk60mhsp2_ck);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "xclk60mhsp1_ck set parent"
>> -                                       "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -               } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> -                       ret = clk_set_parent(omap->utmi_p2_fck,
>> -                                               omap->init_60m_fclk);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "init_60m_fclk set parent"
>> -                               "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -                       clk_enable(omap->usbhost_p2_fck);
>> -                       clk_enable(omap->usbtll_p2_fck);
>> -               }
>> -
>> -               clk_enable(omap->utmi_p1_fck);
>> -               clk_enable(omap->utmi_p2_fck);
>> -
>>                if (is_ehci_tll_mode(pdata->port_mode[0]) ||
>>                        (is_ohci_port(pdata->port_mode[0])))
>>                        reg |= OMAP4_P1_MODE_TLL;
>> @@ -911,12 +605,15 @@ static int usbhs_enable(struct device *dev)
>>                                (pdata->ehci_data->reset_gpio_port[1], 1);
>>        }
>>
>> -end_count:
>> -       omap->count++;
>>        spin_unlock_irqrestore(&omap->lock, flags);
>> -       return 0;
>> +       pm_runtime_put_sync(dev);
>> +}
>> +
>> +static void omap_usbhs_deinit(struct device *dev)
>> +{
>> +       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> +       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>>
>> -err_tll:
>>        if (pdata->ehci_data->phy_reset) {
>>                if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
>>                        gpio_free(pdata->ehci_data->reset_gpio_port[0]);
>> @@ -924,123 +621,257 @@ err_tll:
>>                if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
>>                        gpio_free(pdata->ehci_data->reset_gpio_port[1]);
>>        }
>> -
>> -       clk_disable(omap->usbtll_ick);
>> -       clk_disable(omap->usbtll_fck);
>> -       clk_disable(omap->usbhost_fs_fck);
>> -       clk_disable(omap->usbhost_hs_fck);
>> -       clk_disable(omap->usbhost_ick);
>> -       spin_unlock_irqrestore(&omap->lock, flags);
>> -       return ret;
>>  }
>>
>> -static void usbhs_disable(struct device *dev)
>> +
>> +/**
>> + * usbhs_omap_probe - initialize TI-based HCDs
>> + *
>> + * Allocates basic resources for this USB host controller.
>> + */
>> +static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>>  {
>> -       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> -       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> -       unsigned long                   flags = 0;
>> -       unsigned long                   timeout;
>> +       struct device                   *dev =&pdev->dev;
>> +       struct usbhs_omap_platform_data *pdata = dev->platform_data;
>> +       struct usbhs_hcd_omap           *omap;
>> +       struct resource                 *res;
>> +       int                             ret = 0;
>> +       int                             i;
>>
>> -       dev_dbg(dev, "stopping TI HSUSB Controller\n");
>> +       if (!pdata) {
>> +               dev_err(dev, "Missing platform data\n");
>> +               ret = -ENOMEM;
>> +               goto end_probe;
>> +       }
>>
>> -       spin_lock_irqsave(&omap->lock, flags);
>> +       omap = kzalloc(sizeof(*omap), GFP_KERNEL);
>> +       if (!omap) {
>> +               dev_err(dev, "Memory allocation failed\n");
>> +               ret = -ENOMEM;
>> +               goto end_probe;
>> +       }
>>
>> -       if (omap->count == 0)
>> -               goto end_disble;
>> +       spin_lock_init(&omap->lock);
>>
>> -       omap->count--;
>> +       for (i = 0; i<  OMAP3_HS_USB_PORTS; i++)
>> +               omap->platdata.port_mode[i] = pdata->port_mode[i];
>>
>> -       if (omap->count != 0)
>> -               goto end_disble;
>> +       omap->platdata.ehci_data = pdata->ehci_data;
>> +       omap->platdata.ohci_data = pdata->ohci_data;
>>
>> -       /* Reset OMAP modules for insmod/rmmod to work */
>> -       usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
>> -                       is_omap_usbhs_rev2(omap) ?
>> -                       OMAP4_UHH_SYSCONFIG_SOFTRESET :
>> -                       OMAP_UHH_SYSCONFIG_SOFTRESET);
>> +       pm_runtime_enable(dev);
>>
>> -       timeout = jiffies + msecs_to_jiffies(100);
>> -       while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
>> -                               &  (1<<  0))) {
>> -               cpu_relax();
>> +       omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
>> +       if (IS_ERR(omap->utmi_p1_fck)) {
>> +               ret = PTR_ERR(omap->utmi_p1_fck);
>> +               dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
>> +               goto err_end;
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
>> +       if (IS_ERR(omap->xclk60mhsp1_ck)) {
>> +               ret = PTR_ERR(omap->xclk60mhsp1_ck);
>> +               dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
>> +               goto err_utmi_p1_fck;
>> +       }
>> +
>> +       omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
>> +       if (IS_ERR(omap->utmi_p2_fck)) {
>> +               ret = PTR_ERR(omap->utmi_p2_fck);
>> +               dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
>> +               goto err_xclk60mhsp1_ck;
>> +       }
>> +
>> +       omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
>> +       if (IS_ERR(omap->xclk60mhsp2_ck)) {
>> +               ret = PTR_ERR(omap->xclk60mhsp2_ck);
>> +               dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
>> +               goto err_utmi_p2_fck;
>>        }
>>
>> -       while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
>> -                               &  (1<<  1))) {
>> -               cpu_relax();
>> +       omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
>> +       if (IS_ERR(omap->usbhost_p1_fck)) {
>> +               ret = PTR_ERR(omap->usbhost_p1_fck);
>> +               dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
>> +               goto err_xclk60mhsp2_ck;
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
>> +       if (IS_ERR(omap->usbtll_p1_fck)) {
>> +               ret = PTR_ERR(omap->usbtll_p1_fck);
>> +               dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
>> +               goto err_usbhost_p1_fck;
>> +       }
>> +
>> +       omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
>> +       if (IS_ERR(omap->usbhost_p2_fck)) {
>> +               ret = PTR_ERR(omap->usbhost_p2_fck);
>> +               dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
>> +               goto err_usbtll_p1_fck;
>>        }
>>
>> -       while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
>> -                               &  (1<<  2))) {
>> -               cpu_relax();
>> +       omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
>> +       if (IS_ERR(omap->usbtll_p2_fck)) {
>> +               ret = PTR_ERR(omap->usbtll_p2_fck);
>> +               dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
>> +               goto err_usbhost_p2_fck;
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
>> +       if (IS_ERR(omap->init_60m_fclk)) {
>> +               ret = PTR_ERR(omap->init_60m_fclk);
>> +               dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
>> +               goto err_usbtll_p2_fck;
>>        }
>>
>> -       usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1<<  1));
>> +       if (is_ehci_phy_mode(pdata->port_mode[0])) {
>> +               /* for OMAP3 , the clk set paretn fails */
>> +               ret = clk_set_parent(omap->utmi_p1_fck,
>> +                                       omap->xclk60mhsp1_ck);
>> +               if (ret != 0)
>> +                       dev_err(dev, "xclk60mhsp1_ck set parent"
>> +                               "failed error:%d\n", ret);
>> +       } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> +               ret = clk_set_parent(omap->utmi_p1_fck,
>> +                                       omap->init_60m_fclk);
>> +               if (ret != 0)
>> +                       dev_err(dev, "init_60m_fclk set parent"
>> +                               "failed error:%d\n", ret);
>> +       }
>>
>> -       while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
>> -                               &  (1<<  0))) {
>> -               cpu_relax();
>> +       if (is_ehci_phy_mode(pdata->port_mode[1])) {
>> +               ret = clk_set_parent(omap->utmi_p2_fck,
>> +                                       omap->xclk60mhsp2_ck);
>> +               if (ret != 0)
>> +                       dev_err(dev, "xclk60mhsp2_ck set parent"
>> +                                       "failed error:%d\n", ret);
>> +       } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> +               ret = clk_set_parent(omap->utmi_p2_fck,
>> +                                               omap->init_60m_fclk);
>> +               if (ret != 0)
>> +                       dev_err(dev, "init_60m_fclk set parent"
>> +                               "failed error:%d\n", ret);
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
>> +       if (!res) {
>> +               dev_err(dev, "UHH EHCI get resource failed\n");
>> +               ret = -ENODEV;
>> +               goto err_init_60m_fclk;
>>        }
>>
>> -       if (is_omap_usbhs_rev2(omap)) {
>> -               if (is_ehci_tll_mode(pdata->port_mode[0]))
>> -                       clk_disable(omap->usbtll_p1_fck);
>> -               if (is_ehci_tll_mode(pdata->port_mode[1]))
>> -                       clk_disable(omap->usbtll_p2_fck);
>> -               clk_disable(omap->utmi_p2_fck);
>> -               clk_disable(omap->utmi_p1_fck);
>> +       omap->uhh_base = ioremap(res->start, resource_size(res));
>> +       if (!omap->uhh_base) {
>> +               dev_err(dev, "UHH ioremap failed\n");
>> +               ret = -ENOMEM;
>> +               goto err_init_60m_fclk;
>>        }
>>
>> -       clk_disable(omap->usbtll_ick);
>> -       clk_disable(omap->usbtll_fck);
>> -       clk_disable(omap->usbhost_fs_fck);
>> -       clk_disable(omap->usbhost_hs_fck);
>> -       clk_disable(omap->usbhost_ick);
>> +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
>> +       if (!res) {
>> +               dev_err(dev, "UHH EHCI get resource failed\n");
>> +               ret = -ENODEV;
>> +               goto err_tll;
>> +       }
>>
>> -       /* The gpio_free migh sleep; so unlock the spinlock */
>> -       spin_unlock_irqrestore(&omap->lock, flags);
>> +       omap->tll_base = ioremap(res->start, resource_size(res));
>> +       if (!omap->tll_base) {
>> +               dev_err(dev, "TLL ioremap failed\n");
>> +               ret = -ENOMEM;
>> +               goto err_tll;
>> +       }
>>
>> -       if (pdata->ehci_data->phy_reset) {
>> -               if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
>> -                       gpio_free(pdata->ehci_data->reset_gpio_port[0]);
>> +       platform_set_drvdata(pdev, omap);
>>
>> -               if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
>> -                       gpio_free(pdata->ehci_data->reset_gpio_port[1]);
>> +       ret = omap_usbhs_alloc_children(pdev);
>> +       if (ret) {
>> +               dev_err(dev, "omap_usbhs_alloc_children failed\n");
>> +               goto err_alloc;
>>        }
>> -       return;
>>
>> -end_disble:
>> -       spin_unlock_irqrestore(&omap->lock, flags);
>> -}
>> +       omap_usbhs_init(dev);
>>
>> -int omap_usbhs_enable(struct device *dev)
>> -{
>> -       return  usbhs_enable(dev->parent);
>> +       goto end_probe;
>> +
>> +err_alloc:
>> +       iounmap(omap->tll_base);
>> +
>> +err_tll:
>> +       iounmap(omap->uhh_base);
>> +
>> +err_init_60m_fclk:
>> +       clk_put(omap->init_60m_fclk);
>> +
>> +err_usbtll_p2_fck:
>> +       clk_put(omap->usbtll_p2_fck);
>> +
>> +err_usbhost_p2_fck:
>> +       clk_put(omap->usbhost_p2_fck);
>> +
>> +err_usbtll_p1_fck:
>> +       clk_put(omap->usbtll_p1_fck);
>> +
>> +err_usbhost_p1_fck:
>> +       clk_put(omap->usbhost_p1_fck);
>> +
>> +err_xclk60mhsp2_ck:
>> +       clk_put(omap->xclk60mhsp2_ck);
>> +
>> +err_utmi_p2_fck:
>> +       clk_put(omap->utmi_p2_fck);
>> +
>> +err_xclk60mhsp1_ck:
>> +       clk_put(omap->xclk60mhsp1_ck);
>> +
>> +err_utmi_p1_fck:
>> +       clk_put(omap->utmi_p1_fck);
>> +
>> +err_end:
>> +       pm_runtime_disable(dev);
>> +       kfree(omap);
>> +
>> +end_probe:
>> +       return ret;
>>  }
>> -EXPORT_SYMBOL_GPL(omap_usbhs_enable);
>>
>> -void omap_usbhs_disable(struct device *dev)
>> +/**
>> + * usbhs_omap_remove - shutdown processing for UHH&  TLL HCDs
>> + * @pdev: USB Host Controller being removed
>> + *
>> + * Reverses the effect of usbhs_omap_probe().
>> + */
>> +static int __devexit usbhs_omap_remove(struct platform_device *pdev)
>>  {
>> -       usbhs_disable(dev->parent);
>> +       struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
>> +
>> +       omap_usbhs_deinit(&pdev->dev);
>> +       iounmap(omap->tll_base);
>> +       iounmap(omap->uhh_base);
>> +       clk_put(omap->init_60m_fclk);
>> +       clk_put(omap->usbtll_p2_fck);
>> +       clk_put(omap->usbhost_p2_fck);
>> +       clk_put(omap->usbtll_p1_fck);
>> +       clk_put(omap->usbhost_p1_fck);
>> +       clk_put(omap->xclk60mhsp2_ck);
>> +       clk_put(omap->utmi_p2_fck);
>> +       clk_put(omap->xclk60mhsp1_ck);
>> +       clk_put(omap->utmi_p1_fck);
>> +       pm_runtime_disable(&pdev->dev);
>> +       kfree(omap);
>> +
>> +       return 0;
>>  }
>> -EXPORT_SYMBOL_GPL(omap_usbhs_disable);
>> +
>> +static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
>> +       .runtime_suspend        = usbhs_runtime_suspend,
>> +       .runtime_resume         = usbhs_runtime_resume,
>> +};
>
> Could these be placed under a PM flag.

No, you should not, these functions enable the port clocks for omap4 usbhs
so, it should be default.


>
>>
>>  static struct platform_driver usbhs_omap_driver = {
>>        .driver = {
>>                .name           = (char *)usbhs_driver_name,
>>                .owner          = THIS_MODULE,
>> +               .pm             =&usbhsomap_dev_pm_ops,
>>        },
>>        .remove         = __exit_p(usbhs_omap_remove),
>>  };
>> diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
>> index 4524032..82cd3ea 100644
>> --- a/drivers/usb/host/ehci-omap.c
>> +++ b/drivers/usb/host/ehci-omap.c
>> @@ -41,6 +41,7 @@
>>  #include<linux/usb/ulpi.h>
>>  #include<plat/usb.h>
>>  #include<linux/regulator/consumer.h>
>> +#include<linux/pm_runtime.h>
>>
>>  /* EHCI Register Set */
>>  #define EHCI_INSNREG04                                        (0xA0)
>> @@ -190,11 +191,8 @@ static int ehci_hcd_omap_probe(struct platform_device
>> *pdev)
>>                }
>>        }
>>
>> -       ret = omap_usbhs_enable(dev);
>> -       if (ret) {
>> -               dev_err(dev, "failed to start usbhs with err %d\n", ret);
>> -               goto err_enable;
>> -       }
>> +       pm_runtime_enable(dev);
>> +       pm_runtime_get_sync(dev);
>>
>>        /*
>>         * An undocumented "feature" in the OMAP3 EHCI controller,
>> @@ -240,11 +238,8 @@ static int ehci_hcd_omap_probe(struct platform_device
>> *pdev)
>>        return 0;
>>
>>  err_add_hcd:
>> -       omap_usbhs_disable(dev);
>> -
>> -err_enable:
>>        disable_put_regulator(pdata);
>> -       usb_put_hcd(hcd);
>> +       pm_runtime_put_sync(dev);
>>
>>  err_io:
>>        iounmap(regs);
>> @@ -266,10 +261,12 @@ static int ehci_hcd_omap_remove(struct
>> platform_device *pdev)
>>        struct usb_hcd *hcd     = dev_get_drvdata(dev);
>>
>>        usb_remove_hcd(hcd);
>> -       omap_usbhs_disable(dev);
>>        disable_put_regulator(dev->platform_data);
>>        iounmap(hcd->regs);
>>        usb_put_hcd(hcd);
>> +       pm_runtime_put_sync(dev);
>> +       pm_runtime_disable(dev);
>> +
>>        return 0;
>>  }
>>
>> diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
>> index 6048f2f..6cfedaf 100644
>> --- a/drivers/usb/host/ohci-omap3.c
>> +++ b/drivers/usb/host/ohci-omap3.c
>> @@ -31,6 +31,7 @@
>>
>>  #include<linux/platform_device.h>
>>  #include<plat/usb.h>
>> +#include<linux/pm_runtime.h>
>>
>>
>>  /*-------------------------------------------------------------------------*/
>>
>> @@ -134,7 +135,7 @@ static int __devinit ohci_hcd_omap3_probe(struct
>> platform_device *pdev)
>>        int                     irq;
>>
>>        if (usb_disabled())
>> -               goto err_end;
>> +               return -ENODEV;
>>
>>        if (!dev->parent) {
>>                dev_err(dev, "Missing parent device\n");
>> @@ -172,11 +173,8 @@ static int __devinit ohci_hcd_omap3_probe(struct
>> platform_device *pdev)
>>        hcd->rsrc_len = resource_size(res);
>>        hcd->regs =  regs;
>>
>> -       ret = omap_usbhs_enable(dev);
>> -       if (ret) {
>> -               dev_dbg(dev, "failed to start ohci\n");
>> -               goto err_end;
>> -       }
>> +       pm_runtime_enable(dev);
>> +       pm_runtime_get_sync(dev);
>>
>>        ohci_hcd_init(hcd_to_ohci(hcd));
>>
>> @@ -189,9 +187,7 @@ static int __devinit ohci_hcd_omap3_probe(struct
>> platform_device *pdev)
>>        return 0;
>>
>>  err_add_hcd:
>> -       omap_usbhs_disable(dev);
>> -
>> -err_end:
>> +       pm_runtime_put_sync(dev);
>>        usb_put_hcd(hcd);
>>
>>  err_io:
>> @@ -220,9 +216,9 @@ static int __devexit ohci_hcd_omap3_remove(struct
>> platform_device *pdev)
>>
>>        iounmap(hcd->regs);
>>        usb_remove_hcd(hcd);
>> -       omap_usbhs_disable(dev);
>> +       pm_runtime_put_sync(dev);
>> +       pm_runtime_disable(dev);
>>        usb_put_hcd(hcd);
>> -
>>        return 0;
>>  }
>>
>
>

Re: [PATCH 5/5 v7] mfd: omap: usb: Runtime PM support

[Munegowda, Keshava]

On Thu, Aug 25, 2011 at 12:03 PM, Shubhrajyoti <shubhrajyoti-l0cyMroinI0@public.gmane.org> wrote:
> Hi Keshav,
> Some minor comments
>
> On Wednesday 24 August 2011 08:01 PM, Keshava Munegowda wrote:
>>
>> From: Keshava Munegowda<Keshava_mgowda-l0cyMroinI0@public.gmane.org>
>>
>> The usbhs core driver does not enable/disable the interface and
>> functional clocks; These clocks are handled by hwmod and runtime pm,
>> hence instead of the clock enable/disable, the runtime pm APIS are
>> used. however,the port clocks are handled by the usbhs core.
>>
>> Signed-off-by: Keshava Munegowda<keshava_mgowda-l0cyMroinI0@public.gmane.org>
>> ---
>>  arch/arm/plat-omap/include/plat/usb.h |    3 -
>>  drivers/mfd/omap-usb-host.c           |  731
>> +++++++++++++--------------------
>>  drivers/usb/host/ehci-omap.c          |   17 +-
>>  drivers/usb/host/ohci-omap3.c         |   18 +-
>>  4 files changed, 295 insertions(+), 474 deletions(-)
>>
>> diff --git a/arch/arm/plat-omap/include/plat/usb.h
>> b/arch/arm/plat-omap/include/plat/usb.h
>> index 17d3c93..2b66dc2 100644
>> --- a/arch/arm/plat-omap/include/plat/usb.h
>> +++ b/arch/arm/plat-omap/include/plat/usb.h
>> @@ -100,9 +100,6 @@ extern void usb_musb_init(struct omap_musb_board_data
>> *board_data);
>>
>>  extern void usbhs_init(const struct usbhs_omap_board_data *pdata);
>>
>> -extern int omap_usbhs_enable(struct device *dev);
>> -extern void omap_usbhs_disable(struct device *dev);
>> -
>>  extern int omap4430_phy_power(struct device *dev, int ID, int on);
>>  extern int omap4430_phy_set_clk(struct device *dev, int on);
>>  extern int omap4430_phy_init(struct device *dev);
>> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
>> index 9c2da29..e6f3b01 100644
>> --- a/drivers/mfd/omap-usb-host.c
>> +++ b/drivers/mfd/omap-usb-host.c
>> @@ -26,6 +26,7 @@
>>  #include<linux/spinlock.h>
>>  #include<linux/gpio.h>
>>  #include<plat/usb.h>
>> +#include<linux/pm_runtime.h>
>>
>>  #define USBHS_DRIVER_NAME     "usbhs_omap"
>>  #define OMAP_EHCI_DEVICE      "ehci-omap"
>> @@ -146,9 +147,6 @@
>>
>>
>>  struct usbhs_hcd_omap {
>> -       struct clk                      *usbhost_ick;
>> -       struct clk                      *usbhost_hs_fck;
>> -       struct clk                      *usbhost_fs_fck;
>>        struct clk                      *xclk60mhsp1_ck;
>>        struct clk                      *xclk60mhsp2_ck;
>>        struct clk                      *utmi_p1_fck;
>> @@ -158,8 +156,6 @@ struct usbhs_hcd_omap {
>>        struct clk                      *usbhost_p2_fck;
>>        struct clk                      *usbtll_p2_fck;
>>        struct clk                      *init_60m_fclk;
>> -       struct clk                      *usbtll_fck;
>> -       struct clk                      *usbtll_ick;
>>
>>        void __iomem                    *uhh_base;
>>        void __iomem                    *tll_base;
>> @@ -168,7 +164,6 @@ struct usbhs_hcd_omap {
>>
>>        u32                             usbhs_rev;
>>        spinlock_t                      lock;
>> -       int                             count;
>>  };
>>
>>  /*-------------------------------------------------------------------------*/
>>
>> @@ -318,269 +313,6 @@ err_end:
>>        return ret;
>>  }
>>
>> -/**
>> - * usbhs_omap_probe - initialize TI-based HCDs
>> - *
>> - * Allocates basic resources for this USB host controller.
>> - */
>> -static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>> -{
>> -       struct device                   *dev =&pdev->dev;
>> -       struct usbhs_omap_platform_data *pdata = dev->platform_data;
>> -       struct usbhs_hcd_omap           *omap;
>> -       struct resource                 *res;
>> -       int                             ret = 0;
>> -       int                             i;
>> -
>> -       if (!pdata) {
>> -               dev_err(dev, "Missing platform data\n");
>> -               ret = -ENOMEM;
>> -               goto end_probe;
>> -       }
>> -
>> -       omap = kzalloc(sizeof(*omap), GFP_KERNEL);
>> -       if (!omap) {
>> -               dev_err(dev, "Memory allocation failed\n");
>> -               ret = -ENOMEM;
>> -               goto end_probe;
>> -       }
>> -
>> -       spin_lock_init(&omap->lock);
>> -
>> -       for (i = 0; i<  OMAP3_HS_USB_PORTS; i++)
>> -               omap->platdata.port_mode[i] = pdata->port_mode[i];
>> -
>> -       omap->platdata.ehci_data = pdata->ehci_data;
>> -       omap->platdata.ohci_data = pdata->ohci_data;
>> -
>> -       omap->usbhost_ick = clk_get(dev, "usbhost_ick");
>> -       if (IS_ERR(omap->usbhost_ick)) {
>> -               ret =  PTR_ERR(omap->usbhost_ick);
>> -               dev_err(dev, "usbhost_ick failed error:%d\n", ret);
>> -               goto err_end;
>> -       }
>> -
>> -       omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
>> -       if (IS_ERR(omap->usbhost_hs_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_hs_fck);
>> -               dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
>> -               goto err_usbhost_ick;
>> -       }
>> -
>> -       omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
>> -       if (IS_ERR(omap->usbhost_fs_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_fs_fck);
>> -               dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
>> -               goto err_usbhost_hs_fck;
>> -       }
>> -
>> -       omap->usbtll_fck = clk_get(dev, "usbtll_fck");
>> -       if (IS_ERR(omap->usbtll_fck)) {
>> -               ret = PTR_ERR(omap->usbtll_fck);
>> -               dev_err(dev, "usbtll_fck failed error:%d\n", ret);
>> -               goto err_usbhost_fs_fck;
>> -       }
>> -
>> -       omap->usbtll_ick = clk_get(dev, "usbtll_ick");
>> -       if (IS_ERR(omap->usbtll_ick)) {
>> -               ret = PTR_ERR(omap->usbtll_ick);
>> -               dev_err(dev, "usbtll_ick failed error:%d\n", ret);
>> -               goto err_usbtll_fck;
>> -       }
>> -
>> -       omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
>> -       if (IS_ERR(omap->utmi_p1_fck)) {
>> -               ret = PTR_ERR(omap->utmi_p1_fck);
>> -               dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
>> -               goto err_usbtll_ick;
>> -       }
>> -
>> -       omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
>> -       if (IS_ERR(omap->xclk60mhsp1_ck)) {
>> -               ret = PTR_ERR(omap->xclk60mhsp1_ck);
>> -               dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
>> -               goto err_utmi_p1_fck;
>> -       }
>> -
>> -       omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
>> -       if (IS_ERR(omap->utmi_p2_fck)) {
>> -               ret = PTR_ERR(omap->utmi_p2_fck);
>> -               dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
>> -               goto err_xclk60mhsp1_ck;
>> -       }
>> -
>> -       omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
>> -       if (IS_ERR(omap->xclk60mhsp2_ck)) {
>> -               ret = PTR_ERR(omap->xclk60mhsp2_ck);
>> -               dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
>> -               goto err_utmi_p2_fck;
>> -       }
>> -
>> -       omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
>> -       if (IS_ERR(omap->usbhost_p1_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_p1_fck);
>> -               dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
>> -               goto err_xclk60mhsp2_ck;
>> -       }
>> -
>> -       omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
>> -       if (IS_ERR(omap->usbtll_p1_fck)) {
>> -               ret = PTR_ERR(omap->usbtll_p1_fck);
>> -               dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
>> -               goto err_usbhost_p1_fck;
>> -       }
>> -
>> -       omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
>> -       if (IS_ERR(omap->usbhost_p2_fck)) {
>> -               ret = PTR_ERR(omap->usbhost_p2_fck);
>> -               dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
>> -               goto err_usbtll_p1_fck;
>> -       }
>> -
>> -       omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
>> -       if (IS_ERR(omap->usbtll_p2_fck)) {
>> -               ret = PTR_ERR(omap->usbtll_p2_fck);
>> -               dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
>> -               goto err_usbhost_p2_fck;
>> -       }
>> -
>> -       omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
>> -       if (IS_ERR(omap->init_60m_fclk)) {
>> -               ret = PTR_ERR(omap->init_60m_fclk);
>> -               dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
>> -               goto err_usbtll_p2_fck;
>> -       }
>> -
>> -       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
>> -       if (!res) {
>> -               dev_err(dev, "UHH EHCI get resource failed\n");
>> -               ret = -ENODEV;
>> -               goto err_init_60m_fclk;
>> -       }
>> -
>> -       omap->uhh_base = ioremap(res->start, resource_size(res));
>> -       if (!omap->uhh_base) {
>> -               dev_err(dev, "UHH ioremap failed\n");
>> -               ret = -ENOMEM;
>> -               goto err_init_60m_fclk;
>> -       }
>> -
>> -       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
>> -       if (!res) {
>> -               dev_err(dev, "UHH EHCI get resource failed\n");
>> -               ret = -ENODEV;
>> -               goto err_tll;
>> -       }
>> -
>> -       omap->tll_base = ioremap(res->start, resource_size(res));
>> -       if (!omap->tll_base) {
>> -               dev_err(dev, "TLL ioremap failed\n");
>> -               ret = -ENOMEM;
>> -               goto err_tll;
>> -       }
>> -
>> -       platform_set_drvdata(pdev, omap);
>> -
>> -       ret = omap_usbhs_alloc_children(pdev);
>> -       if (ret) {
>> -               dev_err(dev, "omap_usbhs_alloc_children failed\n");
>> -               goto err_alloc;
>> -       }
>> -
>> -       goto end_probe;
>> -
>> -err_alloc:
>> -       iounmap(omap->tll_base);
>> -
>> -err_tll:
>> -       iounmap(omap->uhh_base);
>> -
>> -err_init_60m_fclk:
>> -       clk_put(omap->init_60m_fclk);
>> -
>> -err_usbtll_p2_fck:
>> -       clk_put(omap->usbtll_p2_fck);
>> -
>> -err_usbhost_p2_fck:
>> -       clk_put(omap->usbhost_p2_fck);
>> -
>> -err_usbtll_p1_fck:
>> -       clk_put(omap->usbtll_p1_fck);
>> -
>> -err_usbhost_p1_fck:
>> -       clk_put(omap->usbhost_p1_fck);
>> -
>> -err_xclk60mhsp2_ck:
>> -       clk_put(omap->xclk60mhsp2_ck);
>> -
>> -err_utmi_p2_fck:
>> -       clk_put(omap->utmi_p2_fck);
>> -
>> -err_xclk60mhsp1_ck:
>> -       clk_put(omap->xclk60mhsp1_ck);
>> -
>> -err_utmi_p1_fck:
>> -       clk_put(omap->utmi_p1_fck);
>> -
>> -err_usbtll_ick:
>> -       clk_put(omap->usbtll_ick);
>> -
>> -err_usbtll_fck:
>> -       clk_put(omap->usbtll_fck);
>> -
>> -err_usbhost_fs_fck:
>> -       clk_put(omap->usbhost_fs_fck);
>> -
>> -err_usbhost_hs_fck:
>> -       clk_put(omap->usbhost_hs_fck);
>> -
>> -err_usbhost_ick:
>> -       clk_put(omap->usbhost_ick);
>> -
>> -err_end:
>> -       kfree(omap);
>> -
>> -end_probe:
>> -       return ret;
>> -}
>> -
>> -/**
>> - * usbhs_omap_remove - shutdown processing for UHH&  TLL HCDs
>> - * @pdev: USB Host Controller being removed
>> - *
>> - * Reverses the effect of usbhs_omap_probe().
>> - */
>> -static int __devexit usbhs_omap_remove(struct platform_device *pdev)
>> -{
>> -       struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
>> -
>> -       if (omap->count != 0) {
>> -               dev_err(&pdev->dev,
>> -                       "Either EHCI or OHCI is still using usbhs
>> core\n");
>> -               return -EBUSY;
>> -       }
>> -
>> -       iounmap(omap->tll_base);
>> -       iounmap(omap->uhh_base);
>> -       clk_put(omap->init_60m_fclk);
>> -       clk_put(omap->usbtll_p2_fck);
>> -       clk_put(omap->usbhost_p2_fck);
>> -       clk_put(omap->usbtll_p1_fck);
>> -       clk_put(omap->usbhost_p1_fck);
>> -       clk_put(omap->xclk60mhsp2_ck);
>> -       clk_put(omap->utmi_p2_fck);
>> -       clk_put(omap->xclk60mhsp1_ck);
>> -       clk_put(omap->utmi_p1_fck);
>> -       clk_put(omap->usbtll_ick);
>> -       clk_put(omap->usbtll_fck);
>> -       clk_put(omap->usbhost_fs_fck);
>> -       clk_put(omap->usbhost_hs_fck);
>> -       clk_put(omap->usbhost_ick);
>> -       kfree(omap);
>> -
>> -       return 0;
>> -}
>> -
>>  static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
>>  {
>>        switch (pmode) {
>> @@ -687,30 +419,79 @@ static void usbhs_omap_tll_init(struct device *dev,
>> u8 tll_channel_count)
>>        }
>>  }
>>
>> -static int usbhs_enable(struct device *dev)
>> +static int usbhs_runtime_resume(struct device *dev)
>>  {
>>        struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>>        struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> -       unsigned long                   flags = 0;
>> -       int                             ret = 0;
>> -       unsigned long                   timeout;
>> -       unsigned                        reg;
>> +       unsigned long                   flags;
>> +
>> +       dev_dbg(dev, "usbhs_runtime_resume\n");
>> +
>> +       if (!pdata) {
>> +               dev_dbg(dev, "missing platform_data\n");
>> +               return  -ENODEV;
>> +       }
>> +
>> +       spin_lock_irqsave(&omap->lock, flags);
>> +
>> +       if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> +               clk_enable(omap->usbhost_p1_fck);
>> +               clk_enable(omap->usbtll_p1_fck);
>> +       }
>> +       if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> +               clk_enable(omap->usbhost_p2_fck);
>> +               clk_enable(omap->usbtll_p2_fck);
>> +       }
>> +       clk_enable(omap->utmi_p1_fck);
>> +       clk_enable(omap->utmi_p2_fck);
>> +
>> +       spin_unlock_irqrestore(&omap->lock, flags);
>> +
>> +       return 0;
>> +}
>> +
>> +static int usbhs_runtime_suspend(struct device *dev)
>> +{
>> +       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> +       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> +       unsigned long                   flags;
>> +
>> +       dev_dbg(dev, "usbhs_runtime_suspend\n");
>>
>> -       dev_dbg(dev, "starting TI HSUSB Controller\n");
>>        if (!pdata) {
>>                dev_dbg(dev, "missing platform_data\n");
>>                return  -ENODEV;
>>        }
>>
>>        spin_lock_irqsave(&omap->lock, flags);
>> -       if (omap->count>  0)
>> -               goto end_count;
>>
>> -       clk_enable(omap->usbhost_ick);
>> -       clk_enable(omap->usbhost_hs_fck);
>> -       clk_enable(omap->usbhost_fs_fck);
>> -       clk_enable(omap->usbtll_fck);
>> -       clk_enable(omap->usbtll_ick);
>> +       if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> +               clk_disable(omap->usbhost_p1_fck);
>> +               clk_disable(omap->usbtll_p1_fck);
>> +       }
>> +       if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> +               clk_disable(omap->usbhost_p2_fck);
>> +               clk_disable(omap->usbtll_p2_fck);
>> +       }
>> +       clk_disable(omap->utmi_p2_fck);
>> +       clk_disable(omap->utmi_p1_fck);
>> +
>> +       spin_unlock_irqrestore(&omap->lock, flags);
>> +
>> +       return 0;
>> +}
>> +
>> +static void omap_usbhs_init(struct device *dev)
>
> Since it is called only at init the it could be placed in init section.
>>
>> +{
>> +       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> +       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> +       unsigned long                   flags;
>> +       unsigned                        reg;
>> +
>> +       dev_dbg(dev, "starting TI HSUSB Controller\n");
>> +
>> +       pm_runtime_get_sync(dev);
>> +       spin_lock_irqsave(&omap->lock, flags);
>>
>>        if (pdata->ehci_data->phy_reset) {
>>                if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
>> @@ -734,50 +515,6 @@ static int usbhs_enable(struct device *dev)
>>        omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
>>        dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
>>
>> -       /* perform TLL soft reset, and wait until reset is complete */
>> -       usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
>> -                       OMAP_USBTLL_SYSCONFIG_SOFTRESET);
>> -
>> -       /* Wait for TLL reset to complete */
>> -       timeout = jiffies + msecs_to_jiffies(1000);
>> -       while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
>> -                       &  OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
>> -               cpu_relax();
>> -
>> -               if (time_after(jiffies, timeout)) {
>> -                       dev_dbg(dev, "operation timed out\n");
>> -                       ret = -EINVAL;
>> -                       goto err_tll;
>> -               }
>> -       }
>> -
>> -       dev_dbg(dev, "TLL RESET DONE\n");
>> -
>> -       /* (1<<3) = no idle mode only for initial debugging */
>> -       usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
>> -                       OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
>> -                       OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
>> -                       OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
>> -
>> -       /* Put UHH in NoIdle/NoStandby mode */
>> -       reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
>> -       if (is_omap_usbhs_rev1(omap)) {
>> -               reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
>> -                               | OMAP_UHH_SYSCONFIG_SIDLEMODE
>> -                               | OMAP_UHH_SYSCONFIG_CACTIVITY
>> -                               | OMAP_UHH_SYSCONFIG_MIDLEMODE);
>> -               reg&= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
>> -
>> -
>> -       } else if (is_omap_usbhs_rev2(omap)) {
>> -               reg&= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
>> -               reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
>> -               reg&= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
>> -               reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
>> -       }
>> -
>> -       usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
>> -
>>        reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
>>        /* setup ULPI bypass and burst configurations */
>>        reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
>> @@ -823,49 +560,6 @@ static int usbhs_enable(struct device *dev)
>>                reg&= ~OMAP4_P1_MODE_CLEAR;
>>                reg&= ~OMAP4_P2_MODE_CLEAR;
>>
>> -               if (is_ehci_phy_mode(pdata->port_mode[0])) {
>> -                       ret = clk_set_parent(omap->utmi_p1_fck,
>> -                                               omap->xclk60mhsp1_ck);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "xclk60mhsp1_ck set parent"
>> -                               "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -               } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> -                       ret = clk_set_parent(omap->utmi_p1_fck,
>> -                                               omap->init_60m_fclk);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "init_60m_fclk set parent"
>> -                               "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -                       clk_enable(omap->usbhost_p1_fck);
>> -                       clk_enable(omap->usbtll_p1_fck);
>> -               }
>> -
>> -               if (is_ehci_phy_mode(pdata->port_mode[1])) {
>> -                       ret = clk_set_parent(omap->utmi_p2_fck,
>> -                                               omap->xclk60mhsp2_ck);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "xclk60mhsp1_ck set parent"
>> -                                       "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -               } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> -                       ret = clk_set_parent(omap->utmi_p2_fck,
>> -                                               omap->init_60m_fclk);
>> -                       if (ret != 0) {
>> -                               dev_err(dev, "init_60m_fclk set parent"
>> -                               "failed error:%d\n", ret);
>> -                               goto err_tll;
>> -                       }
>> -                       clk_enable(omap->usbhost_p2_fck);
>> -                       clk_enable(omap->usbtll_p2_fck);
>> -               }
>> -
>> -               clk_enable(omap->utmi_p1_fck);
>> -               clk_enable(omap->utmi_p2_fck);
>> -
>>                if (is_ehci_tll_mode(pdata->port_mode[0]) ||
>>                        (is_ohci_port(pdata->port_mode[0])))
>>                        reg |= OMAP4_P1_MODE_TLL;
>> @@ -911,12 +605,15 @@ static int usbhs_enable(struct device *dev)
>>                                (pdata->ehci_data->reset_gpio_port[1], 1);
>>        }
>>
>> -end_count:
>> -       omap->count++;
>>        spin_unlock_irqrestore(&omap->lock, flags);
>> -       return 0;
>> +       pm_runtime_put_sync(dev);
>> +}
>> +
>> +static void omap_usbhs_deinit(struct device *dev)
>> +{
>> +       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> +       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>>
>> -err_tll:
>>        if (pdata->ehci_data->phy_reset) {
>>                if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
>>                        gpio_free(pdata->ehci_data->reset_gpio_port[0]);
>> @@ -924,123 +621,257 @@ err_tll:
>>                if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
>>                        gpio_free(pdata->ehci_data->reset_gpio_port[1]);
>>        }
>> -
>> -       clk_disable(omap->usbtll_ick);
>> -       clk_disable(omap->usbtll_fck);
>> -       clk_disable(omap->usbhost_fs_fck);
>> -       clk_disable(omap->usbhost_hs_fck);
>> -       clk_disable(omap->usbhost_ick);
>> -       spin_unlock_irqrestore(&omap->lock, flags);
>> -       return ret;
>>  }
>>
>> -static void usbhs_disable(struct device *dev)
>> +
>> +/**
>> + * usbhs_omap_probe - initialize TI-based HCDs
>> + *
>> + * Allocates basic resources for this USB host controller.
>> + */
>> +static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>>  {
>> -       struct usbhs_hcd_omap           *omap = dev_get_drvdata(dev);
>> -       struct usbhs_omap_platform_data *pdata =&omap->platdata;
>> -       unsigned long                   flags = 0;
>> -       unsigned long                   timeout;
>> +       struct device                   *dev =&pdev->dev;
>> +       struct usbhs_omap_platform_data *pdata = dev->platform_data;
>> +       struct usbhs_hcd_omap           *omap;
>> +       struct resource                 *res;
>> +       int                             ret = 0;
>> +       int                             i;
>>
>> -       dev_dbg(dev, "stopping TI HSUSB Controller\n");
>> +       if (!pdata) {
>> +               dev_err(dev, "Missing platform data\n");
>> +               ret = -ENOMEM;
>> +               goto end_probe;
>> +       }
>>
>> -       spin_lock_irqsave(&omap->lock, flags);
>> +       omap = kzalloc(sizeof(*omap), GFP_KERNEL);
>> +       if (!omap) {
>> +               dev_err(dev, "Memory allocation failed\n");
>> +               ret = -ENOMEM;
>> +               goto end_probe;
>> +       }
>>
>> -       if (omap->count == 0)
>> -               goto end_disble;
>> +       spin_lock_init(&omap->lock);
>>
>> -       omap->count--;
>> +       for (i = 0; i<  OMAP3_HS_USB_PORTS; i++)
>> +               omap->platdata.port_mode[i] = pdata->port_mode[i];
>>
>> -       if (omap->count != 0)
>> -               goto end_disble;
>> +       omap->platdata.ehci_data = pdata->ehci_data;
>> +       omap->platdata.ohci_data = pdata->ohci_data;
>>
>> -       /* Reset OMAP modules for insmod/rmmod to work */
>> -       usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
>> -                       is_omap_usbhs_rev2(omap) ?
>> -                       OMAP4_UHH_SYSCONFIG_SOFTRESET :
>> -                       OMAP_UHH_SYSCONFIG_SOFTRESET);
>> +       pm_runtime_enable(dev);
>>
>> -       timeout = jiffies + msecs_to_jiffies(100);
>> -       while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
>> -                               &  (1<<  0))) {
>> -               cpu_relax();
>> +       omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
>> +       if (IS_ERR(omap->utmi_p1_fck)) {
>> +               ret = PTR_ERR(omap->utmi_p1_fck);
>> +               dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
>> +               goto err_end;
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
>> +       if (IS_ERR(omap->xclk60mhsp1_ck)) {
>> +               ret = PTR_ERR(omap->xclk60mhsp1_ck);
>> +               dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
>> +               goto err_utmi_p1_fck;
>> +       }
>> +
>> +       omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
>> +       if (IS_ERR(omap->utmi_p2_fck)) {
>> +               ret = PTR_ERR(omap->utmi_p2_fck);
>> +               dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
>> +               goto err_xclk60mhsp1_ck;
>> +       }
>> +
>> +       omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
>> +       if (IS_ERR(omap->xclk60mhsp2_ck)) {
>> +               ret = PTR_ERR(omap->xclk60mhsp2_ck);
>> +               dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
>> +               goto err_utmi_p2_fck;
>>        }
>>
>> -       while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
>> -                               &  (1<<  1))) {
>> -               cpu_relax();
>> +       omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
>> +       if (IS_ERR(omap->usbhost_p1_fck)) {
>> +               ret = PTR_ERR(omap->usbhost_p1_fck);
>> +               dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
>> +               goto err_xclk60mhsp2_ck;
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
>> +       if (IS_ERR(omap->usbtll_p1_fck)) {
>> +               ret = PTR_ERR(omap->usbtll_p1_fck);
>> +               dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
>> +               goto err_usbhost_p1_fck;
>> +       }
>> +
>> +       omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
>> +       if (IS_ERR(omap->usbhost_p2_fck)) {
>> +               ret = PTR_ERR(omap->usbhost_p2_fck);
>> +               dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
>> +               goto err_usbtll_p1_fck;
>>        }
>>
>> -       while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
>> -                               &  (1<<  2))) {
>> -               cpu_relax();
>> +       omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
>> +       if (IS_ERR(omap->usbtll_p2_fck)) {
>> +               ret = PTR_ERR(omap->usbtll_p2_fck);
>> +               dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
>> +               goto err_usbhost_p2_fck;
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
>> +       if (IS_ERR(omap->init_60m_fclk)) {
>> +               ret = PTR_ERR(omap->init_60m_fclk);
>> +               dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
>> +               goto err_usbtll_p2_fck;
>>        }
>>
>> -       usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1<<  1));
>> +       if (is_ehci_phy_mode(pdata->port_mode[0])) {
>> +               /* for OMAP3 , the clk set paretn fails */
>> +               ret = clk_set_parent(omap->utmi_p1_fck,
>> +                                       omap->xclk60mhsp1_ck);
>> +               if (ret != 0)
>> +                       dev_err(dev, "xclk60mhsp1_ck set parent"
>> +                               "failed error:%d\n", ret);
>> +       } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
>> +               ret = clk_set_parent(omap->utmi_p1_fck,
>> +                                       omap->init_60m_fclk);
>> +               if (ret != 0)
>> +                       dev_err(dev, "init_60m_fclk set parent"
>> +                               "failed error:%d\n", ret);
>> +       }
>>
>> -       while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
>> -                               &  (1<<  0))) {
>> -               cpu_relax();
>> +       if (is_ehci_phy_mode(pdata->port_mode[1])) {
>> +               ret = clk_set_parent(omap->utmi_p2_fck,
>> +                                       omap->xclk60mhsp2_ck);
>> +               if (ret != 0)
>> +                       dev_err(dev, "xclk60mhsp2_ck set parent"
>> +                                       "failed error:%d\n", ret);
>> +       } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
>> +               ret = clk_set_parent(omap->utmi_p2_fck,
>> +                                               omap->init_60m_fclk);
>> +               if (ret != 0)
>> +                       dev_err(dev, "init_60m_fclk set parent"
>> +                               "failed error:%d\n", ret);
>> +       }
>>
>> -               if (time_after(jiffies, timeout))
>> -                       dev_dbg(dev, "operation timed out\n");
>> +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
>> +       if (!res) {
>> +               dev_err(dev, "UHH EHCI get resource failed\n");
>> +               ret = -ENODEV;
>> +               goto err_init_60m_fclk;
>>        }
>>
>> -       if (is_omap_usbhs_rev2(omap)) {
>> -               if (is_ehci_tll_mode(pdata->port_mode[0]))
>> -                       clk_disable(omap->usbtll_p1_fck);
>> -               if (is_ehci_tll_mode(pdata->port_mode[1]))
>> -                       clk_disable(omap->usbtll_p2_fck);
>> -               clk_disable(omap->utmi_p2_fck);
>> -               clk_disable(omap->utmi_p1_fck);
>> +       omap->uhh_base = ioremap(res->start, resource_size(res));
>> +       if (!omap->uhh_base) {
>> +               dev_err(dev, "UHH ioremap failed\n");
>> +               ret = -ENOMEM;
>> +               goto err_init_60m_fclk;
>>        }
>>
>> -       clk_disable(omap->usbtll_ick);
>> -       clk_disable(omap->usbtll_fck);
>> -       clk_disable(omap->usbhost_fs_fck);
>> -       clk_disable(omap->usbhost_hs_fck);
>> -       clk_disable(omap->usbhost_ick);
>> +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
>> +       if (!res) {
>> +               dev_err(dev, "UHH EHCI get resource failed\n");
>> +               ret = -ENODEV;
>> +               goto err_tll;
>> +       }
>>
>> -       /* The gpio_free migh sleep; so unlock the spinlock */
>> -       spin_unlock_irqrestore(&omap->lock, flags);
>> +       omap->tll_base = ioremap(res->start, resource_size(res));
>> +       if (!omap->tll_base) {
>> +               dev_err(dev, "TLL ioremap failed\n");
>> +               ret = -ENOMEM;
>> +               goto err_tll;
>> +       }
>>
>> -       if (pdata->ehci_data->phy_reset) {
>> -               if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
>> -                       gpio_free(pdata->ehci_data->reset_gpio_port[0]);
>> +       platform_set_drvdata(pdev, omap);
>>
>> -               if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
>> -                       gpio_free(pdata->ehci_data->reset_gpio_port[1]);
>> +       ret = omap_usbhs_alloc_children(pdev);
>> +       if (ret) {
>> +               dev_err(dev, "omap_usbhs_alloc_children failed\n");
>> +               goto err_alloc;
>>        }
>> -       return;
>>
>> -end_disble:
>> -       spin_unlock_irqrestore(&omap->lock, flags);
>> -}
>> +       omap_usbhs_init(dev);
>>
>> -int omap_usbhs_enable(struct device *dev)
>> -{
>> -       return  usbhs_enable(dev->parent);
>> +       goto end_probe;
>> +
>> +err_alloc:
>> +       iounmap(omap->tll_base);
>> +
>> +err_tll:
>> +       iounmap(omap->uhh_base);
>> +
>> +err_init_60m_fclk:
>> +       clk_put(omap->init_60m_fclk);
>> +
>> +err_usbtll_p2_fck:
>> +       clk_put(omap->usbtll_p2_fck);
>> +
>> +err_usbhost_p2_fck:
>> +       clk_put(omap->usbhost_p2_fck);
>> +
>> +err_usbtll_p1_fck:
>> +       clk_put(omap->usbtll_p1_fck);
>> +
>> +err_usbhost_p1_fck:
>> +       clk_put(omap->usbhost_p1_fck);
>> +
>> +err_xclk60mhsp2_ck:
>> +       clk_put(omap->xclk60mhsp2_ck);
>> +
>> +err_utmi_p2_fck:
>> +       clk_put(omap->utmi_p2_fck);
>> +
>> +err_xclk60mhsp1_ck:
>> +       clk_put(omap->xclk60mhsp1_ck);
>> +
>> +err_utmi_p1_fck:
>> +       clk_put(omap->utmi_p1_fck);
>> +
>> +err_end:
>> +       pm_runtime_disable(dev);
>> +       kfree(omap);
>> +
>> +end_probe:
>> +       return ret;
>>  }
>> -EXPORT_SYMBOL_GPL(omap_usbhs_enable);
>>
>> -void omap_usbhs_disable(struct device *dev)
>> +/**
>> + * usbhs_omap_remove - shutdown processing for UHH&  TLL HCDs
>> + * @pdev: USB Host Controller being removed
>> + *
>> + * Reverses the effect of usbhs_omap_probe().
>> + */
>> +static int __devexit usbhs_omap_remove(struct platform_device *pdev)
>>  {
>> -       usbhs_disable(dev->parent);
>> +       struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
>> +
>> +       omap_usbhs_deinit(&pdev->dev);
>> +       iounmap(omap->tll_base);
>> +       iounmap(omap->uhh_base);
>> +       clk_put(omap->init_60m_fclk);
>> +       clk_put(omap->usbtll_p2_fck);
>> +       clk_put(omap->usbhost_p2_fck);
>> +       clk_put(omap->usbtll_p1_fck);
>> +       clk_put(omap->usbhost_p1_fck);
>> +       clk_put(omap->xclk60mhsp2_ck);
>> +       clk_put(omap->utmi_p2_fck);
>> +       clk_put(omap->xclk60mhsp1_ck);
>> +       clk_put(omap->utmi_p1_fck);
>> +       pm_runtime_disable(&pdev->dev);
>> +       kfree(omap);
>> +
>> +       return 0;
>>  }
>> -EXPORT_SYMBOL_GPL(omap_usbhs_disable);
>> +
>> +static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
>> +       .runtime_suspend        = usbhs_runtime_suspend,
>> +       .runtime_resume         = usbhs_runtime_resume,
>> +};
>
> Could these be placed under a PM flag.

No, you should not, these functions enable the port clocks for omap4 usbhs
so, it should be default.


>
>>
>>  static struct platform_driver usbhs_omap_driver = {
>>        .driver = {
>>                .name           = (char *)usbhs_driver_name,
>>                .owner          = THIS_MODULE,
>> +               .pm             =&usbhsomap_dev_pm_ops,
>>        },
>>        .remove         = __exit_p(usbhs_omap_remove),
>>  };
>> diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
>> index 4524032..82cd3ea 100644
>> --- a/drivers/usb/host/ehci-omap.c
>> +++ b/drivers/usb/host/ehci-omap.c
>> @@ -41,6 +41,7 @@
>>  #include<linux/usb/ulpi.h>
>>  #include<plat/usb.h>
>>  #include<linux/regulator/consumer.h>
>> +#include<linux/pm_runtime.h>
>>
>>  /* EHCI Register Set */
>>  #define EHCI_INSNREG04                                        (0xA0)
>> @@ -190,11 +191,8 @@ static int ehci_hcd_omap_probe(struct platform_device
>> *pdev)
>>                }
>>        }
>>
>> -       ret = omap_usbhs_enable(dev);
>> -       if (ret) {
>> -               dev_err(dev, "failed to start usbhs with err %d\n", ret);
>> -               goto err_enable;
>> -       }
>> +       pm_runtime_enable(dev);
>> +       pm_runtime_get_sync(dev);
>>
>>        /*
>>         * An undocumented "feature" in the OMAP3 EHCI controller,
>> @@ -240,11 +238,8 @@ static int ehci_hcd_omap_probe(struct platform_device
>> *pdev)
>>        return 0;
>>
>>  err_add_hcd:
>> -       omap_usbhs_disable(dev);
>> -
>> -err_enable:
>>        disable_put_regulator(pdata);
>> -       usb_put_hcd(hcd);
>> +       pm_runtime_put_sync(dev);
>>
>>  err_io:
>>        iounmap(regs);
>> @@ -266,10 +261,12 @@ static int ehci_hcd_omap_remove(struct
>> platform_device *pdev)
>>        struct usb_hcd *hcd     = dev_get_drvdata(dev);
>>
>>        usb_remove_hcd(hcd);
>> -       omap_usbhs_disable(dev);
>>        disable_put_regulator(dev->platform_data);
>>        iounmap(hcd->regs);
>>        usb_put_hcd(hcd);
>> +       pm_runtime_put_sync(dev);
>> +       pm_runtime_disable(dev);
>> +
>>        return 0;
>>  }
>>
>> diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
>> index 6048f2f..6cfedaf 100644
>> --- a/drivers/usb/host/ohci-omap3.c
>> +++ b/drivers/usb/host/ohci-omap3.c
>> @@ -31,6 +31,7 @@
>>
>>  #include<linux/platform_device.h>
>>  #include<plat/usb.h>
>> +#include<linux/pm_runtime.h>
>>
>>
>>  /*-------------------------------------------------------------------------*/
>>
>> @@ -134,7 +135,7 @@ static int __devinit ohci_hcd_omap3_probe(struct
>> platform_device *pdev)
>>        int                     irq;
>>
>>        if (usb_disabled())
>> -               goto err_end;
>> +               return -ENODEV;
>>
>>        if (!dev->parent) {
>>                dev_err(dev, "Missing parent device\n");
>> @@ -172,11 +173,8 @@ static int __devinit ohci_hcd_omap3_probe(struct
>> platform_device *pdev)
>>        hcd->rsrc_len = resource_size(res);
>>        hcd->regs =  regs;
>>
>> -       ret = omap_usbhs_enable(dev);
>> -       if (ret) {
>> -               dev_dbg(dev, "failed to start ohci\n");
>> -               goto err_end;
>> -       }
>> +       pm_runtime_enable(dev);
>> +       pm_runtime_get_sync(dev);
>>
>>        ohci_hcd_init(hcd_to_ohci(hcd));
>>
>> @@ -189,9 +187,7 @@ static int __devinit ohci_hcd_omap3_probe(struct
>> platform_device *pdev)
>>        return 0;
>>
>>  err_add_hcd:
>> -       omap_usbhs_disable(dev);
>> -
>> -err_end:
>> +       pm_runtime_put_sync(dev);
>>        usb_put_hcd(hcd);
>>
>>  err_io:
>> @@ -220,9 +216,9 @@ static int __devexit ohci_hcd_omap3_remove(struct
>> platform_device *pdev)
>>
>>        iounmap(hcd->regs);
>>        usb_remove_hcd(hcd);
>> -       omap_usbhs_disable(dev);
>> +       pm_runtime_put_sync(dev);
>> +       pm_runtime_disable(dev);
>>        usb_put_hcd(hcd);
>> -
>>        return 0;
>>  }
>>
>
>
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