From: Kishon Vijay Abraham I <kishon@ti.com> To: <kishon@ti.com>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org> Cc: <robh+dt@kernel.org>, <pawel.moll@arm.com>, <mark.rutland@arm.com>, <ijc+devicetree@hellion.org.uk>, <galak@codeaurora.org>, <rogerq@ti.com>, <nsekhar@ti.com>, <linux-pci@vger.kernel.org>, <linux-usb@vger.kernel.org>, <tony@atomide.com>, <t-kristo@ti.com> Subject: [PATCH v3 9/9] phy: omap-usb2: use *syscon* framework API to power on/off the PHY Date: Tue, 15 Dec 2015 14:46:08 +0530 [thread overview] Message-ID: <1450170968-11282-10-git-send-email-kishon@ti.com> (raw) In-Reply-To: <1450170968-11282-1-git-send-email-kishon@ti.com> Deprecate using phy-omap-control driver to power on/off the PHY, and use *syscon* framework to do the same. This handles powering on/off the PHY for the USB2 PHYs used in various TI SoCs. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- Documentation/devicetree/bindings/phy/ti-phy.txt | 8 +- drivers/phy/phy-omap-usb2.c | 94 ++++++++++++++++++---- include/linux/phy/omap_usb.h | 23 ++++++ 3 files changed, 107 insertions(+), 18 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/ti-phy.txt b/Documentation/devicetree/bindings/phy/ti-phy.txt index 49e5b0c..a3b3945 100644 --- a/Documentation/devicetree/bindings/phy/ti-phy.txt +++ b/Documentation/devicetree/bindings/phy/ti-phy.txt @@ -31,6 +31,8 @@ OMAP USB2 PHY Required properties: - compatible: Should be "ti,omap-usb2" + Should be "ti,dra7x-usb2-phy2" for the 2nd instance of USB2 PHY + in DRA7x - reg : Address and length of the register set for the device. - #phy-cells: determine the number of cells that should be given in the phandle while referencing this phy. @@ -40,10 +42,14 @@ Required properties: * "wkupclk" - wakeup clock. * "refclk" - reference clock (optional). -Optional properties: +Deprecated properties: - ctrl-module : phandle of the control module used by PHY driver to power on the PHY. +Recommended properies: +- syscon-phy-power : phandle/offset pair. Phandle to the system control + module and the register offset to power on/off the PHY. + This is usually a subnode of ocp2scp to which it is connected. usb2phy@4a0ad080 { diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c index c79633e..c9c04ff 100644 --- a/drivers/phy/phy-omap-usb2.c +++ b/drivers/phy/phy-omap-usb2.c @@ -29,6 +29,8 @@ #include <linux/delay.h> #include <linux/phy/omap_control_phy.h> #include <linux/phy/phy.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> #include <linux/of_platform.h> #define USB2PHY_DISCON_BYP_LATCH (1 << 31) @@ -97,22 +99,40 @@ static int omap_usb_set_peripheral(struct usb_otg *otg, return 0; } -static int omap_usb_power_off(struct phy *x) +static int omap_usb_phy_power(struct omap_usb *phy, int on) { - struct omap_usb *phy = phy_get_drvdata(x); + u32 val; + int ret; - omap_control_phy_power(phy->control_dev, 0); + if (phy->syscon_phy_power) { + if (on) + val = phy->power_on; + else + val = phy->power_off; + + ret = regmap_update_bits(phy->syscon_phy_power, phy->power_reg, + phy->mask, val); + if (ret < 0) + return ret; + } else { + omap_control_phy_power(phy->control_dev, on); + } return 0; } -static int omap_usb_power_on(struct phy *x) +static int omap_usb_power_off(struct phy *x) { struct omap_usb *phy = phy_get_drvdata(x); - omap_control_phy_power(phy->control_dev, 1); + return omap_usb_phy_power(phy, false); +} - return 0; +static int omap_usb_power_on(struct phy *x) +{ + struct omap_usb *phy = phy_get_drvdata(x); + + return omap_usb_phy_power(phy, true); } static int omap_usb_init(struct phy *x) @@ -147,21 +167,38 @@ static const struct phy_ops ops = { static const struct usb_phy_data omap_usb2_data = { .label = "omap_usb2", .flags = OMAP_USB2_HAS_START_SRP | OMAP_USB2_HAS_SET_VBUS, + .mask = OMAP_DEV_PHY_PD, + .power_off = OMAP_DEV_PHY_PD, }; static const struct usb_phy_data omap5_usb2_data = { .label = "omap5_usb2", .flags = 0, + .mask = OMAP_DEV_PHY_PD, + .power_off = OMAP_DEV_PHY_PD, }; static const struct usb_phy_data dra7x_usb2_data = { .label = "dra7x_usb2", .flags = OMAP_USB2_CALIBRATE_FALSE_DISCONNECT, + .mask = OMAP_DEV_PHY_PD, + .power_off = OMAP_DEV_PHY_PD, +}; + +static const struct usb_phy_data dra7x_usb2_phy2_data = { + .label = "dra7x_usb2_phy2", + .flags = OMAP_USB2_CALIBRATE_FALSE_DISCONNECT, + .mask = OMAP_USB2_PHY_PD, + .power_off = OMAP_USB2_PHY_PD, }; static const struct usb_phy_data am437x_usb2_data = { .label = "am437x_usb2", .flags = 0, + .mask = AM437X_USB2_PHY_PD | AM437X_USB2_OTG_PD | + AM437X_USB2_OTGVDET_EN | AM437X_USB2_OTGSESSEND_EN, + .power_on = AM437X_USB2_OTGVDET_EN | AM437X_USB2_OTGSESSEND_EN, + .power_off = AM437X_USB2_PHY_PD | AM437X_USB2_OTG_PD, }; static const struct of_device_id omap_usb2_id_table[] = { @@ -178,6 +215,10 @@ static const struct of_device_id omap_usb2_id_table[] = { .data = &dra7x_usb2_data, }, { + .compatible = "ti,dra7x-usb2-phy2", + .data = &dra7x_usb2_phy2_data, + }, + { .compatible = "ti,am437x-usb2", .data = &am437x_usb2_data, }, @@ -219,6 +260,9 @@ static int omap_usb2_probe(struct platform_device *pdev) phy->phy.label = phy_data->label; phy->phy.otg = otg; phy->phy.type = USB_PHY_TYPE_USB2; + phy->mask = phy_data->mask; + phy->power_on = phy_data->power_on; + phy->power_off = phy_data->power_off; if (phy_data->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) { res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -228,20 +272,36 @@ static int omap_usb2_probe(struct platform_device *pdev) phy->flags |= OMAP_USB2_CALIBRATE_FALSE_DISCONNECT; } - control_node = of_parse_phandle(node, "ctrl-module", 0); - if (!control_node) { - dev_err(&pdev->dev, "Failed to get control device phandle\n"); - return -EINVAL; - } + phy->syscon_phy_power = syscon_regmap_lookup_by_phandle(node, + "syscon-phy-power"); + if (IS_ERR(phy->syscon_phy_power)) { + dev_dbg(&pdev->dev, + "can't get syscon-phy-power, using control device\n"); + phy->syscon_phy_power = NULL; + + control_node = of_parse_phandle(node, "ctrl-module", 0); + if (!control_node) { + dev_err(&pdev->dev, + "Failed to get control device phandle\n"); + return -EINVAL; + } - control_pdev = of_find_device_by_node(control_node); - if (!control_pdev) { - dev_err(&pdev->dev, "Failed to get control device\n"); - return -EINVAL; + control_pdev = of_find_device_by_node(control_node); + if (!control_pdev) { + dev_err(&pdev->dev, "Failed to get control device\n"); + return -EINVAL; + } + phy->control_dev = &control_pdev->dev; + } else { + if (of_property_read_u32_index(node, + "syscon-phy-power", 1, + &phy->power_reg)) { + dev_err(&pdev->dev, + "couldn't get power reg. offset\n"); + return -EINVAL; + } } - phy->control_dev = &control_pdev->dev; - otg->set_host = omap_usb_set_host; otg->set_peripheral = omap_usb_set_peripheral; if (phy_data->flags & OMAP_USB2_HAS_SET_VBUS) diff --git a/include/linux/phy/omap_usb.h b/include/linux/phy/omap_usb.h index dc2c541..2e5fb87 100644 --- a/include/linux/phy/omap_usb.h +++ b/include/linux/phy/omap_usb.h @@ -30,6 +30,12 @@ struct usb_dpll_params { u32 mf; }; +enum omap_usb_phy_type { + TYPE_USB2, /* USB2_PHY, power down in CONTROL_DEV_CONF */ + TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */ + TYPE_AM437USB2, /* USB2 PHY, power e.g. AM437x */ +}; + struct omap_usb { struct usb_phy phy; struct phy_companion *comparator; @@ -40,11 +46,20 @@ struct omap_usb { struct clk *wkupclk; struct clk *optclk; u8 flags; + enum omap_usb_phy_type type; + struct regmap *syscon_phy_power; /* ctrl. reg. acces */ + unsigned int power_reg; /* power reg. index within syscon */ + u32 mask; + u32 power_on; + u32 power_off; }; struct usb_phy_data { const char *label; u8 flags; + u32 mask; + u32 power_on; + u32 power_off; }; /* Driver Flags */ @@ -52,6 +67,14 @@ struct usb_phy_data { #define OMAP_USB2_HAS_SET_VBUS (1 << 1) #define OMAP_USB2_CALIBRATE_FALSE_DISCONNECT (1 << 2) +#define OMAP_DEV_PHY_PD BIT(0) +#define OMAP_USB2_PHY_PD BIT(28) + +#define AM437X_USB2_PHY_PD BIT(0) +#define AM437X_USB2_OTG_PD BIT(1) +#define AM437X_USB2_OTGVDET_EN BIT(19) +#define AM437X_USB2_OTGSESSEND_EN BIT(20) + #define phy_to_omapusb(x) container_of((x), struct omap_usb, phy) #if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE) -- 1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Kishon Vijay Abraham I <kishon@ti.com> To: kishon@ti.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Cc: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, rogerq@ti.com, nsekhar@ti.com, linux-pci@vger.kernel.org, linux-usb@vger.kernel.org, tony@atomide.com, t-kristo@ti.com Subject: [PATCH v3 9/9] phy: omap-usb2: use *syscon* framework API to power on/off the PHY Date: Tue, 15 Dec 2015 14:46:08 +0530 [thread overview] Message-ID: <1450170968-11282-10-git-send-email-kishon@ti.com> (raw) In-Reply-To: <1450170968-11282-1-git-send-email-kishon@ti.com> Deprecate using phy-omap-control driver to power on/off the PHY, and use *syscon* framework to do the same. This handles powering on/off the PHY for the USB2 PHYs used in various TI SoCs. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- Documentation/devicetree/bindings/phy/ti-phy.txt | 8 +- drivers/phy/phy-omap-usb2.c | 94 ++++++++++++++++++---- include/linux/phy/omap_usb.h | 23 ++++++ 3 files changed, 107 insertions(+), 18 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/ti-phy.txt b/Documentation/devicetree/bindings/phy/ti-phy.txt index 49e5b0c..a3b3945 100644 --- a/Documentation/devicetree/bindings/phy/ti-phy.txt +++ b/Documentation/devicetree/bindings/phy/ti-phy.txt @@ -31,6 +31,8 @@ OMAP USB2 PHY Required properties: - compatible: Should be "ti,omap-usb2" + Should be "ti,dra7x-usb2-phy2" for the 2nd instance of USB2 PHY + in DRA7x - reg : Address and length of the register set for the device. - #phy-cells: determine the number of cells that should be given in the phandle while referencing this phy. @@ -40,10 +42,14 @@ Required properties: * "wkupclk" - wakeup clock. * "refclk" - reference clock (optional). -Optional properties: +Deprecated properties: - ctrl-module : phandle of the control module used by PHY driver to power on the PHY. +Recommended properies: +- syscon-phy-power : phandle/offset pair. Phandle to the system control + module and the register offset to power on/off the PHY. + This is usually a subnode of ocp2scp to which it is connected. usb2phy@4a0ad080 { diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c index c79633e..c9c04ff 100644 --- a/drivers/phy/phy-omap-usb2.c +++ b/drivers/phy/phy-omap-usb2.c @@ -29,6 +29,8 @@ #include <linux/delay.h> #include <linux/phy/omap_control_phy.h> #include <linux/phy/phy.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> #include <linux/of_platform.h> #define USB2PHY_DISCON_BYP_LATCH (1 << 31) @@ -97,22 +99,40 @@ static int omap_usb_set_peripheral(struct usb_otg *otg, return 0; } -static int omap_usb_power_off(struct phy *x) +static int omap_usb_phy_power(struct omap_usb *phy, int on) { - struct omap_usb *phy = phy_get_drvdata(x); + u32 val; + int ret; - omap_control_phy_power(phy->control_dev, 0); + if (phy->syscon_phy_power) { + if (on) + val = phy->power_on; + else + val = phy->power_off; + + ret = regmap_update_bits(phy->syscon_phy_power, phy->power_reg, + phy->mask, val); + if (ret < 0) + return ret; + } else { + omap_control_phy_power(phy->control_dev, on); + } return 0; } -static int omap_usb_power_on(struct phy *x) +static int omap_usb_power_off(struct phy *x) { struct omap_usb *phy = phy_get_drvdata(x); - omap_control_phy_power(phy->control_dev, 1); + return omap_usb_phy_power(phy, false); +} - return 0; +static int omap_usb_power_on(struct phy *x) +{ + struct omap_usb *phy = phy_get_drvdata(x); + + return omap_usb_phy_power(phy, true); } static int omap_usb_init(struct phy *x) @@ -147,21 +167,38 @@ static const struct phy_ops ops = { static const struct usb_phy_data omap_usb2_data = { .label = "omap_usb2", .flags = OMAP_USB2_HAS_START_SRP | OMAP_USB2_HAS_SET_VBUS, + .mask = OMAP_DEV_PHY_PD, + .power_off = OMAP_DEV_PHY_PD, }; static const struct usb_phy_data omap5_usb2_data = { .label = "omap5_usb2", .flags = 0, + .mask = OMAP_DEV_PHY_PD, + .power_off = OMAP_DEV_PHY_PD, }; static const struct usb_phy_data dra7x_usb2_data = { .label = "dra7x_usb2", .flags = OMAP_USB2_CALIBRATE_FALSE_DISCONNECT, + .mask = OMAP_DEV_PHY_PD, + .power_off = OMAP_DEV_PHY_PD, +}; + +static const struct usb_phy_data dra7x_usb2_phy2_data = { + .label = "dra7x_usb2_phy2", + .flags = OMAP_USB2_CALIBRATE_FALSE_DISCONNECT, + .mask = OMAP_USB2_PHY_PD, + .power_off = OMAP_USB2_PHY_PD, }; static const struct usb_phy_data am437x_usb2_data = { .label = "am437x_usb2", .flags = 0, + .mask = AM437X_USB2_PHY_PD | AM437X_USB2_OTG_PD | + AM437X_USB2_OTGVDET_EN | AM437X_USB2_OTGSESSEND_EN, + .power_on = AM437X_USB2_OTGVDET_EN | AM437X_USB2_OTGSESSEND_EN, + .power_off = AM437X_USB2_PHY_PD | AM437X_USB2_OTG_PD, }; static const struct of_device_id omap_usb2_id_table[] = { @@ -178,6 +215,10 @@ static const struct of_device_id omap_usb2_id_table[] = { .data = &dra7x_usb2_data, }, { + .compatible = "ti,dra7x-usb2-phy2", + .data = &dra7x_usb2_phy2_data, + }, + { .compatible = "ti,am437x-usb2", .data = &am437x_usb2_data, }, @@ -219,6 +260,9 @@ static int omap_usb2_probe(struct platform_device *pdev) phy->phy.label = phy_data->label; phy->phy.otg = otg; phy->phy.type = USB_PHY_TYPE_USB2; + phy->mask = phy_data->mask; + phy->power_on = phy_data->power_on; + phy->power_off = phy_data->power_off; if (phy_data->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) { res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -228,20 +272,36 @@ static int omap_usb2_probe(struct platform_device *pdev) phy->flags |= OMAP_USB2_CALIBRATE_FALSE_DISCONNECT; } - control_node = of_parse_phandle(node, "ctrl-module", 0); - if (!control_node) { - dev_err(&pdev->dev, "Failed to get control device phandle\n"); - return -EINVAL; - } + phy->syscon_phy_power = syscon_regmap_lookup_by_phandle(node, + "syscon-phy-power"); + if (IS_ERR(phy->syscon_phy_power)) { + dev_dbg(&pdev->dev, + "can't get syscon-phy-power, using control device\n"); + phy->syscon_phy_power = NULL; + + control_node = of_parse_phandle(node, "ctrl-module", 0); + if (!control_node) { + dev_err(&pdev->dev, + "Failed to get control device phandle\n"); + return -EINVAL; + } - control_pdev = of_find_device_by_node(control_node); - if (!control_pdev) { - dev_err(&pdev->dev, "Failed to get control device\n"); - return -EINVAL; + control_pdev = of_find_device_by_node(control_node); + if (!control_pdev) { + dev_err(&pdev->dev, "Failed to get control device\n"); + return -EINVAL; + } + phy->control_dev = &control_pdev->dev; + } else { + if (of_property_read_u32_index(node, + "syscon-phy-power", 1, + &phy->power_reg)) { + dev_err(&pdev->dev, + "couldn't get power reg. offset\n"); + return -EINVAL; + } } - phy->control_dev = &control_pdev->dev; - otg->set_host = omap_usb_set_host; otg->set_peripheral = omap_usb_set_peripheral; if (phy_data->flags & OMAP_USB2_HAS_SET_VBUS) diff --git a/include/linux/phy/omap_usb.h b/include/linux/phy/omap_usb.h index dc2c541..2e5fb87 100644 --- a/include/linux/phy/omap_usb.h +++ b/include/linux/phy/omap_usb.h @@ -30,6 +30,12 @@ struct usb_dpll_params { u32 mf; }; +enum omap_usb_phy_type { + TYPE_USB2, /* USB2_PHY, power down in CONTROL_DEV_CONF */ + TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */ + TYPE_AM437USB2, /* USB2 PHY, power e.g. AM437x */ +}; + struct omap_usb { struct usb_phy phy; struct phy_companion *comparator; @@ -40,11 +46,20 @@ struct omap_usb { struct clk *wkupclk; struct clk *optclk; u8 flags; + enum omap_usb_phy_type type; + struct regmap *syscon_phy_power; /* ctrl. reg. acces */ + unsigned int power_reg; /* power reg. index within syscon */ + u32 mask; + u32 power_on; + u32 power_off; }; struct usb_phy_data { const char *label; u8 flags; + u32 mask; + u32 power_on; + u32 power_off; }; /* Driver Flags */ @@ -52,6 +67,14 @@ struct usb_phy_data { #define OMAP_USB2_HAS_SET_VBUS (1 << 1) #define OMAP_USB2_CALIBRATE_FALSE_DISCONNECT (1 << 2) +#define OMAP_DEV_PHY_PD BIT(0) +#define OMAP_USB2_PHY_PD BIT(28) + +#define AM437X_USB2_PHY_PD BIT(0) +#define AM437X_USB2_OTG_PD BIT(1) +#define AM437X_USB2_OTGVDET_EN BIT(19) +#define AM437X_USB2_OTGSESSEND_EN BIT(20) + #define phy_to_omapusb(x) container_of((x), struct omap_usb, phy) #if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE) -- 1.7.9.5
next prev parent reply other threads:[~2015-12-15 9:17 UTC|newest] Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-15 9:15 [PATCH v3 0/9] phy: use syscon framework APIs to set ctrl mod reg Kishon Vijay Abraham I 2015-12-15 9:15 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 1/9] phy: ti-pipe3: introduce local struct device* in probe Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 2/9] phy: ti-pipe3: move clk initialization to a separate function Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 3/9] phy: ti-pipe3: move sysctrl " Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 4/9] phy: ti-pipe3: move mem resource " Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 5/9] phy: ti-pipe3: use ti_pipe3_power_off to power off the PHY during probe Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 6/9] phy: ti-pipe3: use *syscon* framework API to power on/off the PHY Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-20 3:38 ` Rob Herring 2015-12-21 8:36 ` Kishon Vijay Abraham I 2015-12-21 8:36 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` [PATCH v3 7/9] phy: ti-pipe3: use *syscon* framework API to set PCS value of " Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-20 3:38 ` Rob Herring 2015-12-15 9:16 ` [PATCH v3 8/9] phy: omap-usb2: use omap_usb_power_off to power off the PHY during probe Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I 2015-12-15 9:16 ` Kishon Vijay Abraham I [this message] 2015-12-15 9:16 ` [PATCH v3 9/9] phy: omap-usb2: use *syscon* framework API to power on/off the PHY Kishon Vijay Abraham I 2015-12-20 3:39 ` Rob Herring 2015-12-20 12:07 ` Kishon Vijay Abraham I 2015-12-20 12:07 ` Kishon Vijay Abraham I 2015-12-22 18:19 ` Rob Herring 2015-12-22 18:19 ` Rob Herring 2015-12-15 10:56 ` [PATCH v3 0/9] phy: use syscon framework APIs to set ctrl mod reg Arnd Bergmann 2015-12-15 11:14 ` Kishon Vijay Abraham I 2015-12-15 11:14 ` Kishon Vijay Abraham I 2015-12-15 11:55 ` Arnd Bergmann 2015-12-15 12:46 ` Kishon Vijay Abraham I 2015-12-15 12:46 ` Kishon Vijay Abraham I 2015-12-15 15:26 ` Tony Lindgren 2015-12-15 15:26 ` Tony Lindgren 2015-12-18 10:16 ` Kishon Vijay Abraham I 2015-12-18 10:16 ` Kishon Vijay Abraham I
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