[PATCH 0/4] Split mach-msm into legacy and mach-qcom (multiplatform)

[PATCH 0/4] Split mach-msm into legacy and mach-qcom (multiplatform)

[Kumar Gala]

This is the starts of splitting the Qualcomm MSM platform into legacy support
that we will not try and convert to multiplatform and multiplatform support.
These patches are based on the 'CPU enable method based SMP' patches.

I wanted to get these out for review, will add a few more patches for defconfig
updates/additions, as well as some additional driver being enabled for ARCH_QCOM.

- k

 arch/arm/mach-msm/board-dt.c       |   27 --
 arch/arm/mach-msm/hotplug.c        |   51 ----
 arch/arm/mach-msm/platsmp.c        |  371 ------------------------------------
 arch/arm/mach-msm/scm-boot.c       |   39 ---
 arch/arm/mach-msm/scm-boot.h       |   24 --
 arch/arm/mach-msm/scm.c            |  299 -----------------------------
 arch/arm/mach-msm/scm.h            |   25 --
 arch/arm/mach-msm/timer.c          |  333 --------------------------------
 b/MAINTAINERS                      |    7 
 b/arch/arm/Kconfig                 |    7 
 b/arch/arm/Makefile                |    1 
 b/arch/arm/boot/dts/Makefile       |    6 
 b/arch/arm/mach-msm/Kconfig        |   54 -----
 b/arch/arm/mach-msm/Makefile       |    8 
 b/arch/arm/mach-qcom/Kconfig       |   34 +++
 b/arch/arm/mach-qcom/Makefile      |    5 
 b/arch/arm/mach-qcom/board.c       |   26 ++
 b/arch/arm/mach-qcom/scm-boot.c    |   39 +++
 b/arch/arm/mach-qcom/scm-boot.h    |   24 ++
 b/arch/arm/mach-qcom/scm.c         |  299 +++++++++++++++++++++++++++++
 b/arch/arm/mach-qcom/scm.h         |   25 ++
 b/arch/arm/mach-qcom/smp.c         |  380 +++++++++++++++++++++++++++++++++++++
 b/drivers/clocksource/Kconfig      |    4 
 b/drivers/clocksource/Makefile     |    1 
 b/drivers/clocksource/qcom-timer.c |  330 ++++++++++++++++++++++++++++++++
 b/drivers/tty/serial/Kconfig       |    2 
 26 files changed, 1188 insertions(+), 1233 deletions(-)

[PATCH 1/4] clocksource: qcom: Move clocksource code out of mach-msm

[Kumar Gala]

We intent to share the clocksource code for MSM platforms between legacy
and multiplatform supported qcom SoCs.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
---
 arch/arm/mach-msm/Kconfig                                   | 13 +++++--------
 arch/arm/mach-msm/Makefile                                  |  1 -
 drivers/clocksource/Kconfig                                 |  4 ++++
 drivers/clocksource/Makefile                                |  1 +
 .../mach-msm/timer.c => drivers/clocksource/qcom-timer.c    |  6 +-----
 5 files changed, 11 insertions(+), 14 deletions(-)
 rename arch/arm/mach-msm/timer.c => drivers/clocksource/qcom-timer.c (98%)

diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index 9625cf3..3c4eca7 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -21,7 +21,7 @@ config ARCH_MSM8X60
 	select CPU_V7
 	select HAVE_SMP
 	select MSM_SCM if SMP
-	select MSM_TIMER
+	select CLKSRC_QCOM
 
 config ARCH_MSM8960
 	bool "Enable support for MSM8960"
@@ -29,7 +29,7 @@ config ARCH_MSM8960
 	select CPU_V7
 	select HAVE_SMP
 	select MSM_SCM if SMP
-	select MSM_TIMER
+	select CLKSRC_QCOM
 
 config ARCH_MSM8974
 	bool "Enable support for MSM8974"
@@ -54,7 +54,7 @@ config ARCH_MSM7X00A
 	select MACH_TROUT if !MACH_HALIBUT
 	select MSM_PROC_COMM
 	select MSM_SMD
-	select MSM_TIMER
+	select CLKSRC_QCOM
 	select MSM_SMD_PKG3
 
 config ARCH_MSM7X30
@@ -66,7 +66,7 @@ config ARCH_MSM7X30
 	select MSM_GPIOMUX
 	select MSM_PROC_COMM
 	select MSM_SMD
-	select MSM_TIMER
+	select CLKSRC_QCOM
 	select MSM_VIC
 
 config ARCH_QSD8X50
@@ -78,7 +78,7 @@ config ARCH_QSD8X50
 	select MSM_GPIOMUX
 	select MSM_PROC_COMM
 	select MSM_SMD
-	select MSM_TIMER
+	select CLKSRC_QCOM
 	select MSM_VIC
 
 endchoice
@@ -153,7 +153,4 @@ config MSM_GPIOMUX
 config MSM_SCM
 	bool
 
-config MSM_TIMER
-	bool
-
 endif
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 721f27f..4baff13 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -1,4 +1,3 @@
-obj-$(CONFIG_MSM_TIMER) += timer.o
 obj-$(CONFIG_MSM_PROC_COMM) += clock.o
 
 obj-$(CONFIG_MSM_VIC) += irq-vic.o
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index cd6950f..81caa16 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -140,3 +140,7 @@ config VF_PIT_TIMER
 	bool
 	help
 	  Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
+
+config CLKSRC_QCOM
+	bool
+	depends on ARCH_MSM
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index c7ca50a..2e0c0cc 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_CLKSRC_EFM32)	+= time-efm32.o
 obj-$(CONFIG_CLKSRC_EXYNOS_MCT)	+= exynos_mct.o
 obj-$(CONFIG_CLKSRC_SAMSUNG_PWM)	+= samsung_pwm_timer.o
 obj-$(CONFIG_VF_PIT_TIMER)	+= vf_pit_timer.o
+obj-$(CONFIG_CLKSRC_QCOM)	+= qcom-timer.o
 
 obj-$(CONFIG_ARM_ARCH_TIMER)		+= arm_arch_timer.o
 obj-$(CONFIG_ARM_GLOBAL_TIMER)		+= arm_global_timer.o
diff --git a/arch/arm/mach-msm/timer.c b/drivers/clocksource/qcom-timer.c
similarity index 98%
rename from arch/arm/mach-msm/timer.c
rename to drivers/clocksource/qcom-timer.c
index fd16449..dca829e 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/drivers/clocksource/qcom-timer.c
@@ -1,7 +1,7 @@
 /*
  *
  * Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2009-2012, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2009-2012,2014, The Linux Foundation. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -26,10 +26,6 @@
 #include <linux/of_irq.h>
 #include <linux/sched_clock.h>
 
-#include <asm/mach/time.h>
-
-#include "common.h"
-
 #define TIMER_MATCH_VAL			0x0000
 #define TIMER_COUNT_VAL			0x0004
 #define TIMER_ENABLE			0x0008
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

[PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Kumar Gala]

Introduce a new mach-qcom that will support SoCs that intend to be
multiplatform compatiable while keeping mach-msm to legacy SoC/board
support that will not transition over to multiplatform.

As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
to mach-qcom.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
---
 MAINTAINERS                                        |  7 +++
 arch/arm/Kconfig                                   |  7 +--
 arch/arm/Makefile                                  |  1 +
 arch/arm/boot/dts/Makefile                         |  6 +--
 arch/arm/mach-msm/Kconfig                          | 45 +------------------
 arch/arm/mach-msm/Makefile                         |  7 ---
 arch/arm/mach-msm/hotplug.c                        | 51 ----------------------
 arch/arm/mach-qcom/Kconfig                         | 34 +++++++++++++++
 arch/arm/mach-qcom/Makefile                        |  5 +++
 .../arm/{mach-msm/board-dt.c => mach-qcom/board.c} |  9 ++--
 arch/arm/{mach-msm => mach-qcom}/scm-boot.c        |  0
 arch/arm/{mach-msm => mach-qcom}/scm-boot.h        |  0
 arch/arm/{mach-msm => mach-qcom}/scm.c             |  0
 arch/arm/{mach-msm => mach-qcom}/scm.h             |  0
 arch/arm/{mach-msm/platsmp.c => mach-qcom/smp.c}   | 11 ++++-
 15 files changed, 70 insertions(+), 113 deletions(-)
 delete mode 100644 arch/arm/mach-msm/hotplug.c
 create mode 100644 arch/arm/mach-qcom/Kconfig
 create mode 100644 arch/arm/mach-qcom/Makefile
 rename arch/arm/{mach-msm/board-dt.c => mach-qcom/board.c} (71%)
 rename arch/arm/{mach-msm => mach-qcom}/scm-boot.c (100%)
 rename arch/arm/{mach-msm => mach-qcom}/scm-boot.h (100%)
 rename arch/arm/{mach-msm => mach-qcom}/scm.c (100%)
 rename arch/arm/{mach-msm => mach-qcom}/scm.h (100%)
 rename arch/arm/{mach-msm/platsmp.c => mach-qcom/smp.c} (97%)

diff --git a/MAINTAINERS b/MAINTAINERS
index a31a6e3..1817078 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1174,6 +1174,13 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 W:	http://www.arm.linux.org.uk/
 S:	Maintained
 
+ARM/QUALCOMM SUPPORT
+M:	David Brown <davidb@codeaurora.org>
+M:	Kumar Gala <galak@codeaurora.org>
+L:	linux-arm-msm@vger.kernel.org
+S:	Maintained
+F:	arch/arm/mach-qcom/
+
 ARM/RADISYS ENP2611 MACHINE SUPPORT
 M:	Lennert Buytenhek <kernel@wantstofly.org>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index dc6ef9a..9be7483 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -657,9 +657,8 @@ config ARCH_PXA
 	help
 	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 
-config ARCH_MSM_NODT
-	bool "Qualcomm MSM"
-	select ARCH_MSM
+config ARCH_MSM
+	bool "Qualcomm MSM (non-multiplatform)"
 	select ARCH_REQUIRE_GPIOLIB
 	select COMMON_CLK
 	select GENERIC_CLOCKEVENTS
@@ -1005,6 +1004,8 @@ source "arch/arm/plat-pxa/Kconfig"
 
 source "arch/arm/mach-mmp/Kconfig"
 
+source "arch/arm/mach-qcom/Kconfig"
+
 source "arch/arm/mach-realview/Kconfig"
 
 source "arch/arm/mach-rockchip/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 08a9ef5..51e5bed 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -180,6 +180,7 @@ machine-$(CONFIG_ARCH_OMAP2PLUS)	+= omap2
 machine-$(CONFIG_ARCH_ORION5X)		+= orion5x
 machine-$(CONFIG_ARCH_PICOXCELL)	+= picoxcell
 machine-$(CONFIG_ARCH_PXA)		+= pxa
+machine-$(CONFIG_ARCH_QCOM)		+= qcom
 machine-$(CONFIG_ARCH_REALVIEW)		+= realview
 machine-$(CONFIG_ARCH_ROCKCHIP)		+= rockchip
 machine-$(CONFIG_ARCH_RPC)		+= rpc
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b9d6a8b..c9eaf1f 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -118,9 +118,6 @@ dtb-$(CONFIG_ARCH_KIRKWOOD) += kirkwood-cloudbox.dtb \
 	kirkwood-ts219-6282.dtb
 dtb-$(CONFIG_ARCH_MARCO) += marco-evb.dtb
 dtb-$(CONFIG_ARCH_MOXART) += moxart-uc7112lx.dtb
-dtb-$(CONFIG_ARCH_MSM) += qcom-msm8660-surf.dtb \
-	qcom-msm8960-cdp.dtb \
-	qcom-apq8074-dragonboard.dtb
 dtb-$(CONFIG_ARCH_MVEBU) += armada-370-db.dtb \
 	armada-370-mirabox.dtb \
 	armada-370-netgear-rn102.dtb \
@@ -232,6 +229,9 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
 	dra7-evm.dtb
 dtb-$(CONFIG_ARCH_ORION5X) += orion5x-lacie-ethernet-disk-mini-v2.dtb
 dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb
+dtb-$(CONFIG_ARCH_QCOM) += qcom-msm8660-surf.dtb \
+	qcom-msm8960-cdp.dtb \
+	qcom-apq8074-dragonboard.dtb
 dtb-$(CONFIG_ARCH_U8500) += ste-snowball.dtb \
 	ste-hrefprev60-stuib.dtb \
 	ste-hrefprev60-tvk.dtb \
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index 3c4eca7..a7f959e 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -1,50 +1,9 @@
-config ARCH_MSM
-	bool
-
-config ARCH_MSM_DT
-	bool "Qualcomm MSM DT Support" if ARCH_MULTI_V7
-	select ARCH_MSM
-	select ARCH_REQUIRE_GPIOLIB
-	select CLKSRC_OF
-	select GENERIC_CLOCKEVENTS
-	help
-	  Support for Qualcomm's devicetree based MSM systems.
-
 if ARCH_MSM
 
-menu "Qualcomm MSM SoC Selection"
-	depends on ARCH_MSM_DT
-
-config ARCH_MSM8X60
-	bool "Enable support for MSM8X60"
-	select ARM_GIC
-	select CPU_V7
-	select HAVE_SMP
-	select MSM_SCM if SMP
-	select CLKSRC_QCOM
-
-config ARCH_MSM8960
-	bool "Enable support for MSM8960"
-	select ARM_GIC
-	select CPU_V7
-	select HAVE_SMP
-	select MSM_SCM if SMP
-	select CLKSRC_QCOM
-
-config ARCH_MSM8974
-	bool "Enable support for MSM8974"
-	select ARM_GIC
-	select CPU_V7
-	select HAVE_ARM_ARCH_TIMER
-	select HAVE_SMP
-	select MSM_SCM if SMP
-
-endmenu
-
 choice
 	prompt "Qualcomm MSM SoC Type"
 	default ARCH_MSM7X00A
-	depends on ARCH_MSM_NODT
+	depends on ARCH_MSM
 
 config ARCH_MSM7X00A
 	bool "MSM7x00A / MSM7x01A"
@@ -99,7 +58,7 @@ config  MSM_VIC
 	bool
 
 menu "Qualcomm MSM Board Type"
-	depends on ARCH_MSM_NODT
+	depends on ARCH_MSM
 
 config MACH_HALIBUT
 	depends on ARCH_MSM
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 4baff13..27c078a 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -13,18 +13,11 @@ obj-$(CONFIG_ARCH_QSD8X50) += dma.o io.o
 
 obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o
 obj-$(CONFIG_MSM_SMD) += last_radio_log.o
-obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.o
-
-CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
-
-obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
-obj-$(CONFIG_SMP) += platsmp.o
 
 obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o devices-msm7x00.o
 obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o board-trout-panel.o devices-msm7x00.o
 obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o devices-msm7x00.o
 obj-$(CONFIG_ARCH_MSM7X30) += board-msm7x30.o devices-msm7x30.o
 obj-$(CONFIG_ARCH_QSD8X50) += board-qsd8x50.o devices-qsd8x50.o
-obj-$(CONFIG_ARCH_MSM_DT) += board-dt.o
 obj-$(CONFIG_MSM_GPIOMUX) += gpiomux.o
 obj-$(CONFIG_ARCH_QSD8X50) += gpiomux-8x50.o
diff --git a/arch/arm/mach-msm/hotplug.c b/arch/arm/mach-msm/hotplug.c
deleted file mode 100644
index cea80fc..0000000
--- a/arch/arm/mach-msm/hotplug.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- *  Copyright (C) 2002 ARM Ltd.
- *  All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-
-#include <asm/smp_plat.h>
-
-#include "common.h"
-
-static inline void cpu_enter_lowpower(void)
-{
-}
-
-static inline void cpu_leave_lowpower(void)
-{
-}
-
-static inline void platform_do_lowpower(unsigned int cpu)
-{
-	asm("wfi"
-	    :
-	    :
-	    : "memory", "cc");
-}
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void __ref msm_cpu_die(unsigned int cpu)
-{
-	/*
-	 * we're ready for shutdown now, so do it
-	 */
-	cpu_enter_lowpower();
-	platform_do_lowpower(cpu);
-
-	/*
-	 * bring this CPU back into the world of cache
-	 * coherency, and then restore interrupts
-	 */
-	cpu_leave_lowpower();
-}
diff --git a/arch/arm/mach-qcom/Kconfig b/arch/arm/mach-qcom/Kconfig
new file mode 100644
index 0000000..8830431
--- /dev/null
+++ b/arch/arm/mach-qcom/Kconfig
@@ -0,0 +1,34 @@
+config ARCH_QCOM
+	bool "Qualcomm Support" if ARCH_MULTI_V7
+	select ARCH_REQUIRE_GPIOLIB
+	select CLKSRC_OF
+	select GENERIC_CLOCKEVENTS
+	select ARM_GIC
+	select CPU_V7
+	select HAVE_SMP
+	select QCOM_SCM if SMP
+	help
+	  Support for Qualcomm's devicetree based systems.
+
+if ARCH_QCOM
+
+menu "Qualcomm SoC Selection"
+
+config ARCH_MSM8X60
+	bool "Enable support for MSM8X60"
+	select CLKSRC_QCOM
+
+config ARCH_MSM8960
+	bool "Enable support for MSM8960"
+	select CLKSRC_QCOM
+
+config ARCH_MSM8974
+	bool "Enable support for MSM8974"
+	select HAVE_ARM_ARCH_TIMER
+
+endmenu
+
+config QCOM_SCM
+	bool
+
+endif
diff --git a/arch/arm/mach-qcom/Makefile b/arch/arm/mach-qcom/Makefile
new file mode 100644
index 0000000..c0ba0ef
--- /dev/null
+++ b/arch/arm/mach-qcom/Makefile
@@ -0,0 +1,5 @@
+obj-y			:= board.o
+obj-$(CONFIG_SMP)	+= smp.o
+obj-$(CONFIG_QCOM_SCM)	+= scm.o scm-boot.o
+
+CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
diff --git a/arch/arm/mach-msm/board-dt.c b/arch/arm/mach-qcom/board.c
similarity index 71%
rename from arch/arm/mach-msm/board-dt.c
rename to arch/arm/mach-qcom/board.c
index 1e3af2b..bae617e 100644
--- a/arch/arm/mach-msm/board-dt.c
+++ b/arch/arm/mach-qcom/board.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010-2012,2013 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010-2014 The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -14,14 +14,13 @@
 
 #include <asm/mach/arch.h>
 
-static const char * const msm_dt_match[] __initconst = {
-	"qcom,msm8660-fluid",
+static const char * const qcom_dt_match[] __initconst = {
 	"qcom,msm8660-surf",
 	"qcom,msm8960-cdp",
 	"qcom,apq8074-dragonboard",
 	NULL
 };
 
-DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
-	.dt_compat = msm_dt_match,
+DT_MACHINE_START(QCOM_DT, "Qualcomm (Flattened Device Tree)")
+	.dt_compat = qcom_dt_match,
 MACHINE_END
diff --git a/arch/arm/mach-msm/scm-boot.c b/arch/arm/mach-qcom/scm-boot.c
similarity index 100%
rename from arch/arm/mach-msm/scm-boot.c
rename to arch/arm/mach-qcom/scm-boot.c
diff --git a/arch/arm/mach-msm/scm-boot.h b/arch/arm/mach-qcom/scm-boot.h
similarity index 100%
rename from arch/arm/mach-msm/scm-boot.h
rename to arch/arm/mach-qcom/scm-boot.h
diff --git a/arch/arm/mach-msm/scm.c b/arch/arm/mach-qcom/scm.c
similarity index 100%
rename from arch/arm/mach-msm/scm.c
rename to arch/arm/mach-qcom/scm.c
diff --git a/arch/arm/mach-msm/scm.h b/arch/arm/mach-qcom/scm.h
similarity index 100%
rename from arch/arm/mach-msm/scm.h
rename to arch/arm/mach-qcom/scm.h
diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-qcom/smp.c
similarity index 97%
rename from arch/arm/mach-msm/platsmp.c
rename to arch/arm/mach-qcom/smp.c
index 42eb6b7..28364cb 100644
--- a/arch/arm/mach-msm/platsmp.c
+++ b/arch/arm/mach-qcom/smp.c
@@ -2,6 +2,7 @@
  *  Copyright (C) 2002 ARM Ltd.
  *  All Rights Reserved
  *  Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *  Copyright (c) 2014 The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -20,7 +21,6 @@
 #include <asm/smp_plat.h>
 
 #include "scm-boot.h"
-#include "common.h"
 
 #define VDD_SC1_ARRAY_CLAMP_GFS_CTL	0x35a0
 #define SCSS_CPU1CORE_RESET		0x2d80
@@ -48,6 +48,15 @@ extern void secondary_startup(void);
 
 static DEFINE_SPINLOCK(boot_lock);
 
+static void __ref msm_cpu_die(unsigned int cpu)
+{
+
+	asm("wfi"
+	    :
+	    :
+	    : "memory", "cc");
+}
+
 static void msm_secondary_init(unsigned int cpu)
 {
 	/*
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

[PATCH 3/4] clocksource: qcom: split building of legacy vs multiplatform support

[Kumar Gala]

The majority of the clocksource code for the Qualcomm platform is shared
between newer (multiplatform) and older platforms.  However there is a bit
of code that isn't, so only build it for the appropriate config.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
---
 drivers/clocksource/qcom-timer.c | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/clocksource/qcom-timer.c b/drivers/clocksource/qcom-timer.c
index dca829e..e807acf 100644
--- a/drivers/clocksource/qcom-timer.c
+++ b/drivers/clocksource/qcom-timer.c
@@ -106,15 +106,6 @@ static notrace cycle_t msm_read_timer_count(struct clocksource *cs)
 	return readl_relaxed(source_base + TIMER_COUNT_VAL);
 }
 
-static notrace cycle_t msm_read_timer_count_shift(struct clocksource *cs)
-{
-	/*
-	 * Shift timer count down by a constant due to unreliable lower bits
-	 * on some targets.
-	 */
-	return msm_read_timer_count(cs) >> MSM_DGT_SHIFT;
-}
-
 static struct clocksource msm_clocksource = {
 	.name	= "dg_timer",
 	.rating	= 300,
@@ -228,7 +219,7 @@ err:
 	sched_clock_register(msm_sched_clock_read, sched_bits, dgt_hz);
 }
 
-#ifdef CONFIG_OF
+#ifdef CONFIG_ARCH_QCOM
 static void __init msm_dt_timer_init(struct device_node *np)
 {
 	u32 freq;
@@ -281,7 +272,7 @@ static void __init msm_dt_timer_init(struct device_node *np)
 }
 CLOCKSOURCE_OF_DECLARE(kpss_timer, "qcom,kpss-timer", msm_dt_timer_init);
 CLOCKSOURCE_OF_DECLARE(scss_timer, "qcom,scss-timer", msm_dt_timer_init);
-#endif
+#else
 
 static int __init msm_timer_map(phys_addr_t addr, u32 event, u32 source,
 				u32 sts)
@@ -301,6 +292,15 @@ static int __init msm_timer_map(phys_addr_t addr, u32 event, u32 source,
 	return 0;
 }
 
+static notrace cycle_t msm_read_timer_count_shift(struct clocksource *cs)
+{
+	/*
+	 * Shift timer count down by a constant due to unreliable lower bits
+	 * on some targets.
+	 */
+	return msm_read_timer_count(cs) >> MSM_DGT_SHIFT;
+}
+
 void __init msm7x01_timer_init(void)
 {
 	struct clocksource *cs = &msm_clocksource;
@@ -327,3 +327,4 @@ void __init qsd8x50_timer_init(void)
 		return;
 	msm_timer_init(19200000 / 4, 32, 7, false);
 }
+#endif
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

[PATCH 4/4] tty: serial: msm: Enable building msm_serial for ARCH_QCOM

[Kumar Gala]

We've split Qualcomm MSM support into legacy and multiplatform.  So add
the ability to build the serial driver on the newer ARCH_QCOM
multiplatform.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
---
Greg,

If we can get an ack on this, will probably go via the arm-soc tree to keep
the patchset together.

thanks

- k

 drivers/tty/serial/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index a3815ea..ce9b12d 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1024,7 +1024,7 @@ config SERIAL_SGI_IOC3
 
 config SERIAL_MSM
 	bool "MSM on-chip serial port support"
-	depends on ARCH_MSM
+	depends on ARCH_MSM || ARCH_QCOM
 	select SERIAL_CORE
 
 config SERIAL_MSM_CONSOLE
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation

Re: [PATCH 4/4] tty: serial: msm: Enable building msm_serial for ARCH_QCOM

[Greg Kroah-Hartman]

On Thu, Jan 30, 2014 at 12:36:42PM -0600, Kumar Gala wrote:
> We've split Qualcomm MSM support into legacy and multiplatform.  So add
> the ability to build the serial driver on the newer ARCH_QCOM
> multiplatform.
> 
> Signed-off-by: Kumar Gala <galak@codeaurora.org>
> ---
> Greg,
> 
> If we can get an ack on this, will probably go via the arm-soc tree to keep
> the patchset together.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Olof Johansson]

On Thu, Jan 30, 2014 at 12:36:40PM -0600, Kumar Gala wrote:
> Introduce a new mach-qcom that will support SoCs that intend to be
> multiplatform compatiable while keeping mach-msm to legacy SoC/board
> support that will not transition over to multiplatform.
> 
> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
> to mach-qcom.
> 
> Signed-off-by: Kumar Gala <galak@codeaurora.org>
> ---
>  MAINTAINERS                                        |  7 +++
>  arch/arm/Kconfig                                   |  7 +--
>  arch/arm/Makefile                                  |  1 +
>  arch/arm/boot/dts/Makefile                         |  6 +--
>  arch/arm/mach-msm/Kconfig                          | 45 +------------------
>  arch/arm/mach-msm/Makefile                         |  7 ---
>  arch/arm/mach-msm/hotplug.c                        | 51 ----------------------
>  arch/arm/mach-qcom/Kconfig                         | 34 +++++++++++++++
>  arch/arm/mach-qcom/Makefile                        |  5 +++
>  .../arm/{mach-msm/board-dt.c => mach-qcom/board.c} |  9 ++--
>  arch/arm/{mach-msm => mach-qcom}/scm-boot.c        |  0
>  arch/arm/{mach-msm => mach-qcom}/scm-boot.h        |  0
>  arch/arm/{mach-msm => mach-qcom}/scm.c             |  0
>  arch/arm/{mach-msm => mach-qcom}/scm.h             |  0
>  arch/arm/{mach-msm/platsmp.c => mach-qcom/smp.c}   | 11 ++++-
>  15 files changed, 70 insertions(+), 113 deletions(-)
>  delete mode 100644 arch/arm/mach-msm/hotplug.c
>  create mode 100644 arch/arm/mach-qcom/Kconfig
>  create mode 100644 arch/arm/mach-qcom/Makefile
>  rename arch/arm/{mach-msm/board-dt.c => mach-qcom/board.c} (71%)
>  rename arch/arm/{mach-msm => mach-qcom}/scm-boot.c (100%)
>  rename arch/arm/{mach-msm => mach-qcom}/scm-boot.h (100%)
>  rename arch/arm/{mach-msm => mach-qcom}/scm.c (100%)
>  rename arch/arm/{mach-msm => mach-qcom}/scm.h (100%)
>  rename arch/arm/{mach-msm/platsmp.c => mach-qcom/smp.c} (97%)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a31a6e3..1817078 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1174,6 +1174,13 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
>  W:	http://www.arm.linux.org.uk/
>  S:	Maintained
>  
> +ARM/QUALCOMM SUPPORT
> +M:	David Brown <davidb@codeaurora.org>
> +M:	Kumar Gala <galak@codeaurora.org>
> +L:	linux-arm-msm@vger.kernel.org
> +S:	Maintained
> +F:	arch/arm/mach-qcom/

Git repo? If you want us to apply patches for us we can do that, but if
you prefer to run a tree and do pull requests then you should have an
URL to it here.


-Olof

Re: [PATCH 0/4] Split mach-msm into legacy and mach-qcom (multiplatform)

[Olof Johansson]

On Thu, Jan 30, 2014 at 12:36:38PM -0600, Kumar Gala wrote:
> This is the starts of splitting the Qualcomm MSM platform into legacy support
> that we will not try and convert to multiplatform and multiplatform support.
> These patches are based on the 'CPU enable method based SMP' patches.
> 
> I wanted to get these out for review, will add a few more patches for defconfig
> updates/additions, as well as some additional driver being enabled for ARCH_QCOM.

Series:

Acked-by: Olof Johansson <olof@lixom.net>

See comment on the MAINTAINERS addition; let me know how you prefer to send us
patches. We can apply from mailing lists we just need to know your preference.


-Olof

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Arnd Bergmann]

On Thursday 30 January 2014, Kumar Gala wrote:
> Introduce a new mach-qcom that will support SoCs that intend to be
> multiplatform compatiable while keeping mach-msm to legacy SoC/board
> support that will not transition over to multiplatform.
> 
> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
> to mach-qcom.
> 
> Signed-off-by: Kumar Gala <galak@codeaurora.org>
> ---
>  MAINTAINERS                                        |  7 +++
>  arch/arm/Kconfig                                   |  7 +--
>  arch/arm/Makefile                                  |  1 +
>  arch/arm/boot/dts/Makefile                         |  6 +--
>  arch/arm/mach-msm/Kconfig                          | 45 +------------------
>  arch/arm/mach-msm/Makefile                         |  7 ---
>  arch/arm/mach-msm/hotplug.c                        | 51 ----------------------
>  arch/arm/mach-qcom/Kconfig                         | 34 +++++++++++++++
>  arch/arm/mach-qcom/Makefile                        |  5 +++
>  .../arm/{mach-msm/board-dt.c => mach-qcom/board.c} |  9 ++--
>  arch/arm/{mach-msm => mach-qcom}/scm-boot.c        |  0
>  arch/arm/{mach-msm => mach-qcom}/scm-boot.h        |  0
>  arch/arm/{mach-msm => mach-qcom}/scm.c             |  0
>  arch/arm/{mach-msm => mach-qcom}/scm.h             |  0
>  arch/arm/{mach-msm/platsmp.c => mach-qcom/smp.c}   | 11 ++++-

The hotplug.c change sticks out as something that isn't just a move
of code to another place, but deletion of unused code. It would
be nice to split that out into a separate change, possibly together
with the trivial board.c and smp.c changes.

	Arnd

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Kumar Gala]

On Jan 31, 2014, at 1:20 PM, Arnd Bergmann <arnd@arndb.de> wrote:

> On Thursday 30 January 2014, Kumar Gala wrote:
>> Introduce a new mach-qcom that will support SoCs that intend to be
>> multiplatform compatiable while keeping mach-msm to legacy SoC/board
>> support that will not transition over to multiplatform.
>> 
>> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
>> to mach-qcom.
>> 
>> Signed-off-by: Kumar Gala <galak@codeaurora.org>
>> ---
>> MAINTAINERS                                        |  7 +++
>> arch/arm/Kconfig                                   |  7 +--
>> arch/arm/Makefile                                  |  1 +
>> arch/arm/boot/dts/Makefile                         |  6 +--
>> arch/arm/mach-msm/Kconfig                          | 45 +------------------
>> arch/arm/mach-msm/Makefile                         |  7 ---
>> arch/arm/mach-msm/hotplug.c                        | 51 ----------------------
>> arch/arm/mach-qcom/Kconfig                         | 34 +++++++++++++++
>> arch/arm/mach-qcom/Makefile                        |  5 +++
>> .../arm/{mach-msm/board-dt.c => mach-qcom/board.c} |  9 ++--
>> arch/arm/{mach-msm => mach-qcom}/scm-boot.c        |  0
>> arch/arm/{mach-msm => mach-qcom}/scm-boot.h        |  0
>> arch/arm/{mach-msm => mach-qcom}/scm.c             |  0
>> arch/arm/{mach-msm => mach-qcom}/scm.h             |  0
>> arch/arm/{mach-msm/platsmp.c => mach-qcom/smp.c}   | 11 ++++-
> 
> The hotplug.c change sticks out as something that isn't just a move
> of code to another place, but deletion of unused code. It would
> be nice to split that out into a separate change, possibly together
> with the trivial board.c and smp.c changes.

That’s not 100% true, the hotplug.c code implemented msm_cpu_die, which moved into smp.c

I can split out scm*/smp* into a patch to enable smp if that is really desired, but not exactly sure what it gets us.


- k
-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Arnd Bergmann]

On Friday 31 January 2014 13:25:25 Kumar Gala wrote:
> > The hotplug.c change sticks out as something that isn't just a move
> > of code to another place, but deletion of unused code. It would
> > be nice to split that out into a separate change, possibly together
> > with the trivial board.c and smp.c changes.
> 
> That’s not 100% true, the hotplug.c code implemented msm_cpu_die, which moved into smp.c
> 
> I can split out scm*/smp* into a patch to enable smp if that is really desired, but not exactly sure what it gets us.
> 

It's not extremely important, I just prefer splitting patches
that have any kind of functional change from trivial moves.

If something happens to break for an unforseen reason, it's
easier to bisect to the patch that does the change.

	Arnd

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Kumar Gala]

On Jan 31, 2014, at 1:34 PM, Arnd Bergmann <arnd@arndb.de> wrote:

> On Friday 31 January 2014 13:25:25 Kumar Gala wrote:
>>> The hotplug.c change sticks out as something that isn't just a move
>>> of code to another place, but deletion of unused code. It would
>>> be nice to split that out into a separate change, possibly together
>>> with the trivial board.c and smp.c changes.
>> 
>> That’s not 100% true, the hotplug.c code implemented msm_cpu_die, which moved into smp.c
>> 
>> I can split out scm*/smp* into a patch to enable smp if that is really desired, but not exactly sure what it gets us.
>> 
> 
> It's not extremely important, I just prefer splitting patches
> that have any kind of functional change from trivial moves.
> 
> If something happens to break for an unforseen reason, it's
> easier to bisect to the patch that does the change.
> 
> 	Arnd

I’ll push my change to hotplug.c into the SMP patch set that Stephen started.

- k

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Rob Herring]

On Thu, Jan 30, 2014 at 12:36 PM, Kumar Gala <galak@codeaurora.org> wrote:
> Introduce a new mach-qcom that will support SoCs that intend to be
> multiplatform compatiable while keeping mach-msm to legacy SoC/board
> support that will not transition over to multiplatform.
>
> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
> to mach-qcom.
>
> Signed-off-by: Kumar Gala <galak@codeaurora.org>
> ---

[snip]

> diff --git a/arch/arm/mach-qcom/Kconfig b/arch/arm/mach-qcom/Kconfig
> new file mode 100644
> index 0000000..8830431
> --- /dev/null
> +++ b/arch/arm/mach-qcom/Kconfig
> @@ -0,0 +1,34 @@
> +config ARCH_QCOM
> +       bool "Qualcomm Support" if ARCH_MULTI_V7
> +       select ARCH_REQUIRE_GPIOLIB
> +       select CLKSRC_OF
> +       select GENERIC_CLOCKEVENTS
> +       select ARM_GIC
> +       select CPU_V7

CPU_V7 is already selected by MULTI_V7.


[snip]

> diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-qcom/smp.c
> similarity index 97%
> rename from arch/arm/mach-msm/platsmp.c
> rename to arch/arm/mach-qcom/smp.c
> index 42eb6b7..28364cb 100644
> --- a/arch/arm/mach-msm/platsmp.c
> +++ b/arch/arm/mach-qcom/smp.c
> @@ -2,6 +2,7 @@
>   *  Copyright (C) 2002 ARM Ltd.
>   *  All Rights Reserved
>   *  Copyright (c) 2010, Code Aurora Forum. All rights reserved.
> + *  Copyright (c) 2014 The Linux Foundation. All rights reserved.
>   *
>   * This program is free software; you can redistribute it and/or modify
>   * it under the terms of the GNU General Public License version 2 as
> @@ -20,7 +21,6 @@
>  #include <asm/smp_plat.h>
>
>  #include "scm-boot.h"
> -#include "common.h"
>
>  #define VDD_SC1_ARRAY_CLAMP_GFS_CTL    0x35a0
>  #define SCSS_CPU1CORE_RESET            0x2d80
> @@ -48,6 +48,15 @@ extern void secondary_startup(void);
>
>  static DEFINE_SPINLOCK(boot_lock);
>
> +static void __ref msm_cpu_die(unsigned int cpu)
> +{
> +
> +       asm("wfi"
> +           :
> +           :
> +           : "memory", "cc");
> +}

I realize this is just a move, but there is a wfi() macro that can be
used here instead.

Rob

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Kevin Hilman]

Kumar Gala <galak@codeaurora.org> writes:

> Introduce a new mach-qcom that will support SoCs that intend to be
> multiplatform compatiable while keeping mach-msm to legacy SoC/board
> support that will not transition over to multiplatform.
>
> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
> to mach-qcom.
>
> Signed-off-by: Kumar Gala <galak@codeaurora.org>

Having a closer look at this after seeing the multi_v7_defconfig change,
I have a minor nit on the new ARCH_QCOM name.

For new additions, we've been trying to move towards using SOC_foo
instead of ARCH_foo.  Any reason not to do that here also?

Kevin

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Kumar Gala]

On Feb 26, 2014, at 8:22 AM, Kevin Hilman <khilman@linaro.org> wrote:

> Kumar Gala <galak@codeaurora.org> writes:
> 
>> Introduce a new mach-qcom that will support SoCs that intend to be
>> multiplatform compatiable while keeping mach-msm to legacy SoC/board
>> support that will not transition over to multiplatform.
>> 
>> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
>> to mach-qcom.
>> 
>> Signed-off-by: Kumar Gala <galak@codeaurora.org>
> 
> Having a closer look at this after seeing the multi_v7_defconfig change,
> I have a minor nit on the new ARCH_QCOM name.
> 
> For new additions, we've been trying to move towards using SOC_foo
> instead of ARCH_foo.  Any reason not to do that here also?
> 
> Kevin

No reason, just wasn’t aware and no one said anything til now.  Hmm, how to handle this now, can we do this as a 3.16 cleanup?

- k

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

Re: [PATCH 2/4] arm: qcom: Split Qualcomm support into legacy and multiplatform

[Kevin Hilman]

Kumar Gala <galak@codeaurora.org> writes:

> On Feb 26, 2014, at 8:22 AM, Kevin Hilman <khilman@linaro.org> wrote:
>
>> Kumar Gala <galak@codeaurora.org> writes:
>> 
>>> Introduce a new mach-qcom that will support SoCs that intend to be
>>> multiplatform compatiable while keeping mach-msm to legacy SoC/board
>>> support that will not transition over to multiplatform.
>>> 
>>> As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
>>> to mach-qcom.
>>> 
>>> Signed-off-by: Kumar Gala <galak@codeaurora.org>
>> 
>> Having a closer look at this after seeing the multi_v7_defconfig change,
>> I have a minor nit on the new ARCH_QCOM name.
>> 
>> For new additions, we've been trying to move towards using SOC_foo
>> instead of ARCH_foo.  Any reason not to do that here also?
>> 
>> Kevin
>
> No reason, just wasn’t aware and no one said anything til now.  

Yeah, sorry for not reviewiing sooner.

> Hmm, how to handle this now, can we do this as a 3.16 cleanup?

Yes, we've already merged it, so doing it as a cleanup should be fine.

Thanks,

Kevin