Adapted omap-usb3 PHY driver to Generic PHY Framework and moved phy-omap-usb3
driver in drivers/usb/phy to drivers/phy and also renamed the file to
phy-omap-pipe3 since this same driver will be used for SATA PHY and
PCIE PHY.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
Documentation/devicetree/bindings/usb/usb-phy.txt | 5 +-
drivers/phy/Kconfig | 10 +
drivers/phy/Makefile | 1 +
.../phy/phy-omap-usb3.c => phy/phy-omap-pipe3.c} | 206 +++++++++++---------
drivers/usb/phy/Kconfig | 11 --
drivers/usb/phy/Makefile | 1 -
include/linux/phy/omap_pipe3.h | 52 +++++
7 files changed, 177 insertions(+), 109 deletions(-)
rename drivers/{usb/phy/phy-omap-usb3.c => phy/phy-omap-pipe3.c} (57%)
create mode 100644 include/linux/phy/omap_pipe3.h
diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt
index c0245c8..36bdb17 100644
--- a/Documentation/devicetree/bindings/usb/usb-phy.txt
+++ b/Documentation/devicetree/bindings/usb/usb-phy.txt
@@ -21,10 +21,11 @@ usb2phy@4a0ad080 {
#phy-cells = <0>;
};
-OMAP USB3 PHY
+OMAP PIPE3 PHY
Required properties:
- - compatible: Should be "ti,omap-usb3"
+ - compatible: Should be "ti,omap-usb3", "ti,omap-pipe3", "ti,omap-sata"
+ or "ti,omap-pcie"
- reg : Address and length of the register set for the device.
- reg-names: The names of the register addresses corresponding to the registers
filled in "reg".
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index ac239ac..5c2e7a0 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -27,6 +27,16 @@ config OMAP_USB2
The USB OTG controller communicates with the comparator using this
driver.
+config OMAP_PIPE3
+ tristate "OMAP PIPE3 PHY Driver"
+ select GENERIC_PHY
+ select OMAP_CONTROL_USB
+ help
+ Enable this to support the PIPE3 PHY that is part of SOC. This
+ driver takes care of all the PHY functionality apart from comparator.
+ This driver interacts with the "OMAP Control PHY Driver" to power
+ on/off the PHY.
+
config TWL4030_USB
tristate "TWL4030 USB Transceiver Driver"
depends on TWL4030_CORE && REGULATOR_TWL4030 && USB_MUSB_OMAP2PLUS
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 0dd8a98..48bf9f2 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -4,4 +4,5 @@
obj-$(CONFIG_GENERIC_PHY) += phy-core.o
obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o
+obj-$(CONFIG_OMAP_PIPE3) += phy-omap-pipe3.o
obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o
diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/phy/phy-omap-pipe3.c
similarity index 57%
rename from drivers/usb/phy/phy-omap-usb3.c
rename to drivers/phy/phy-omap-pipe3.c
index 4004f82..ee9a901 100644
--- a/drivers/usb/phy/phy-omap-usb3.c
+++ b/drivers/phy/phy-omap-pipe3.c
@@ -1,5 +1,5 @@
/*
- * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP.
+ * omap-pipe3 - PHY driver for SATA, USB and PCIE in OMAP platforms
*
* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
* This program is free software; you can redistribute it and/or modify
@@ -19,7 +19,8 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
-#include <linux/usb/omap_usb.h>
+#include <linux/phy/omap_pipe3.h>
+#include <linux/phy/phy.h>
#include <linux/of.h>
#include <linux/clk.h>
#include <linux/err.h>
@@ -52,17 +53,17 @@
/*
* This is an Empirical value that works, need to confirm the actual
- * value required for the USB3PHY_PLL_CONFIGURATION2.PLL_IDLE status
- * to be correctly reflected in the USB3PHY_PLL_STATUS register.
+ * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status
+ * to be correctly reflected in the PIPE3PHY_PLL_STATUS register.
*/
# define PLL_IDLE_TIME 100;
-struct usb_dpll_map {
+struct pipe3_dpll_map {
unsigned long rate;
- struct usb_dpll_params params;
+ struct pipe3_dpll_params params;
};
-static struct usb_dpll_map dpll_map[] = {
+static struct pipe3_dpll_map dpll_map[] = {
{12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */
{16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */
{19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */
@@ -71,7 +72,7 @@ static struct usb_dpll_map dpll_map[] = {
{38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */
};
-static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate)
+static struct pipe3_dpll_params *omap_pipe3_get_dpll_params(unsigned long rate)
{
int i;
@@ -83,110 +84,113 @@ static struct usb_dpll_params *omap_usb3_get_dpll_params(unsigned long rate)
return 0;
}
-static int omap_usb3_suspend(struct usb_phy *x, int suspend)
+static int omap_pipe3_power_off(struct phy *x)
{
- struct omap_usb *phy = phy_to_omapusb(x);
- int val;
+ struct omap_pipe3 *phy = phy_get_drvdata(x);
+ int val;
int timeout = PLL_IDLE_TIME;
- if (suspend && !phy->is_suspended) {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
- val |= PLL_IDLE;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
-
- do {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS);
- if (val & PLL_TICOPWDN)
- break;
- udelay(1);
- } while (--timeout);
-
- omap_control_usb_phy_power(phy->control_dev, 0);
-
- phy->is_suspended = 1;
- } else if (!suspend && phy->is_suspended) {
- phy->is_suspended = 0;
-
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
- val &= ~PLL_IDLE;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
-
- do {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS);
- if (!(val & PLL_TICOPWDN))
- break;
- udelay(1);
- } while (--timeout);
- }
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
+ val |= PLL_IDLE;
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
+
+ do {
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
+ if (val & PLL_TICOPWDN)
+ break;
+ udelay(1);
+ } while (--timeout);
+
+ omap_control_usb_phy_power(phy->control_dev, 0);
+
+ return 0;
+}
+
+static int omap_pipe3_power_on(struct phy *x)
+{
+ struct omap_pipe3 *phy = phy_get_drvdata(x);
+ int val;
+ int timeout = PLL_IDLE_TIME;
+
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
+ val &= ~PLL_IDLE;
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
+
+ do {
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
+ if (!(val & PLL_TICOPWDN))
+ break;
+ udelay(1);
+ } while (--timeout);
return 0;
}
-static void omap_usb_dpll_relock(struct omap_usb *phy)
+static void omap_pipe3_dpll_relock(struct omap_pipe3 *phy)
{
u32 val;
unsigned long timeout;
- omap_usb_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO);
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO);
timeout = jiffies + msecs_to_jiffies(20);
do {
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS);
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
if (val & PLL_LOCK)
break;
} while (!WARN_ON(time_after(jiffies, timeout)));
}
-static int omap_usb_dpll_lock(struct omap_usb *phy)
+static int omap_pipe3_dpll_lock(struct omap_pipe3 *phy)
{
u32 val;
unsigned long rate;
- struct usb_dpll_params *dpll_params;
+ struct pipe3_dpll_params *dpll_params;
rate = clk_get_rate(phy->sys_clk);
- dpll_params = omap_usb3_get_dpll_params(rate);
+ dpll_params = omap_pipe3_get_dpll_params(rate);
if (!dpll_params) {
dev_err(phy->dev,
"No DPLL configuration for %lu Hz SYS CLK\n", rate);
return -EINVAL;
}
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
val &= ~PLL_REGN_MASK;
val |= dpll_params->n << PLL_REGN_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
val &= ~PLL_SELFREQDCO_MASK;
val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
val &= ~PLL_REGM_MASK;
val |= dpll_params->m << PLL_REGM_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4);
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4);
val &= ~PLL_REGM_F_MASK;
val |= dpll_params->mf << PLL_REGM_F_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val);
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val);
- val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3);
+ val = omap_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3);
val &= ~PLL_SD_MASK;
val |= dpll_params->sd << PLL_SD_SHIFT;
- omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val);
+ omap_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val);
- omap_usb_dpll_relock(phy);
+ omap_pipe3_dpll_relock(phy);
return 0;
}
-static int omap_usb3_init(struct usb_phy *x)
+static int omap_pipe3_init(struct phy *x)
{
- struct omap_usb *phy = phy_to_omapusb(x);
+ struct omap_pipe3 *phy = phy_get_drvdata(x);
int ret;
- ret = omap_usb_dpll_lock(phy);
+ ret = omap_pipe3_dpll_lock(phy);
if (ret)
return ret;
@@ -195,9 +199,18 @@ static int omap_usb3_init(struct usb_phy *x)
return 0;
}
-static int omap_usb3_probe(struct platform_device *pdev)
+static struct phy_ops ops = {
+ .init = omap_pipe3_init,
+ .power_on = omap_pipe3_power_on,
+ .power_off = omap_pipe3_power_off,
+ .owner = THIS_MODULE,
+};
+
+static int omap_pipe3_probe(struct platform_device *pdev)
{
- struct omap_usb *phy;
+ struct omap_pipe3 *phy;
+ struct phy *generic_phy;
+ struct phy_provider *phy_provider;
struct resource *res;
struct device_node *node = pdev->dev.of_node;
struct device_node *control_node;
@@ -208,7 +221,7 @@ static int omap_usb3_probe(struct platform_device *pdev)
phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
if (!phy) {
- dev_err(&pdev->dev, "unable to alloc mem for OMAP USB3 PHY\n");
+ dev_err(&pdev->dev, "unable to alloc mem for OMAP PIPE3 PHY\n");
return -ENOMEM;
}
@@ -219,13 +232,6 @@ static int omap_usb3_probe(struct platform_device *pdev)
phy->dev = &pdev->dev;
- phy->phy.dev = phy->dev;
- phy->phy.label = "omap-usb3";
- phy->phy.init = omap_usb3_init;
- phy->phy.set_suspend = omap_usb3_suspend;
- phy->phy.type = USB_PHY_TYPE_USB3;
-
- phy->is_suspended = 1;
phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
if (IS_ERR(phy->wkupclk)) {
dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
@@ -251,6 +257,11 @@ static int omap_usb3_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to get control device phandle\n");
return -EINVAL;
}
+ phy_provider = devm_of_phy_provider_register(phy->dev,
+ of_phy_simple_xlate);
+ if (IS_ERR(phy_provider))
+ return PTR_ERR(phy_provider);
+
control_pdev = of_find_device_by_node(control_node);
if (!control_pdev) {
dev_err(&pdev->dev, "Failed to get control device\n");
@@ -260,23 +271,27 @@ static int omap_usb3_probe(struct platform_device *pdev)
phy->control_dev = &control_pdev->dev;
omap_control_usb_phy_power(phy->control_dev, 0);
- usb_add_phy_dev(&phy->phy);
platform_set_drvdata(pdev, phy);
-
pm_runtime_enable(phy->dev);
+
+ generic_phy = devm_phy_create(phy->dev, &ops, NULL);
+ if (IS_ERR(generic_phy))
+ return PTR_ERR(generic_phy);
+
+ phy_set_drvdata(generic_phy, phy);
+
pm_runtime_get(&pdev->dev);
return 0;
}
-static int omap_usb3_remove(struct platform_device *pdev)
+static int omap_pipe3_remove(struct platform_device *pdev)
{
- struct omap_usb *phy = platform_get_drvdata(pdev);
+ struct omap_pipe3 *phy = platform_get_drvdata(pdev);
clk_unprepare(phy->wkupclk);
clk_unprepare(phy->optclk);
- usb_remove_phy(&phy->phy);
if (!pm_runtime_suspended(&pdev->dev))
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -286,10 +301,9 @@ static int omap_usb3_remove(struct platform_device *pdev)
#ifdef CONFIG_PM_RUNTIME
-static int omap_usb3_runtime_suspend(struct device *dev)
+static int omap_pipe3_runtime_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct omap_usb *phy = platform_get_drvdata(pdev);
+ struct omap_pipe3 *phy = dev_get_drvdata(dev);
clk_disable(phy->wkupclk);
clk_disable(phy->optclk);
@@ -297,11 +311,10 @@ static int omap_usb3_runtime_suspend(struct device *dev)
return 0;
}
-static int omap_usb3_runtime_resume(struct device *dev)
+static int omap_pipe3_runtime_resume(struct device *dev)
{
u32 ret = 0;
- struct platform_device *pdev = to_platform_device(dev);
- struct omap_usb *phy = platform_get_drvdata(pdev);
+ struct omap_pipe3 *phy = dev_get_drvdata(dev);
ret = clk_enable(phy->optclk);
if (ret) {
@@ -324,38 +337,41 @@ err1:
return ret;
}
-static const struct dev_pm_ops omap_usb3_pm_ops = {
- SET_RUNTIME_PM_OPS(omap_usb3_runtime_suspend, omap_usb3_runtime_resume,
- NULL)
+static const struct dev_pm_ops omap_pipe3_pm_ops = {
+ SET_RUNTIME_PM_OPS(omap_pipe3_runtime_suspend,
+ omap_pipe3_runtime_resume, NULL)
};
-#define DEV_PM_OPS (&omap_usb3_pm_ops)
+#define DEV_PM_OPS (&omap_pipe3_pm_ops)
#else
#define DEV_PM_OPS NULL
#endif
#ifdef CONFIG_OF
-static const struct of_device_id omap_usb3_id_table[] = {
+static const struct of_device_id omap_pipe3_id_table[] = {
+ { .compatible = "ti,omap-pipe3" },
+ { .compatible = "ti,omap-sata" },
+ { .compatible = "ti,omap-pcie" },
{ .compatible = "ti,omap-usb3" },
{}
};
-MODULE_DEVICE_TABLE(of, omap_usb3_id_table);
+MODULE_DEVICE_TABLE(of, omap_pipe3_id_table);
#endif
-static struct platform_driver omap_usb3_driver = {
- .probe = omap_usb3_probe,
- .remove = omap_usb3_remove,
+static struct platform_driver omap_pipe3_driver = {
+ .probe = omap_pipe3_probe,
+ .remove = omap_pipe3_remove,
.driver = {
- .name = "omap-usb3",
+ .name = "omap-pipe3",
.owner = THIS_MODULE,
.pm = DEV_PM_OPS,
- .of_match_table = of_match_ptr(omap_usb3_id_table),
+ .of_match_table = of_match_ptr(omap_pipe3_id_table),
},
};
-module_platform_driver(omap_usb3_driver);
+module_platform_driver(omap_pipe3_driver);
-MODULE_ALIAS("platform: omap_usb3");
+MODULE_ALIAS("platform: omap_pipe3");
MODULE_AUTHOR("Texas Instruments Inc.");
-MODULE_DESCRIPTION("OMAP USB3 phy driver");
+MODULE_DESCRIPTION("OMAP PIPE3 phy driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index d69cdad..0210e03 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -66,17 +66,6 @@ config OMAP_CONTROL_USB
power on the USB2 PHY is present in OMAP4 and OMAP5. OMAP5 has an
additional register to power on USB3 PHY.
-config OMAP_USB3
- tristate "OMAP USB3 PHY Driver"
- depends on ARCH_OMAP2PLUS || COMPILE_TEST
- select OMAP_CONTROL_USB
- select USB_PHY
- help
- Enable this to support the USB3 PHY that is part of SOC. This
- driver takes care of all the PHY functionality apart from comparator.
- This driver interacts with the "OMAP Control USB Driver" to power
- on/off the PHY.
-
config AM335X_CONTROL_USB
tristate
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 51968d7..d1c9683 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -13,7 +13,6 @@ obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o
obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o
obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o
obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o
-obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o
obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o
obj-$(CONFIG_SAMSUNG_USB2PHY) += phy-samsung-usb2.o
obj-$(CONFIG_SAMSUNG_USB3PHY) += phy-samsung-usb3.o
diff --git a/include/linux/phy/omap_pipe3.h b/include/linux/phy/omap_pipe3.h
new file mode 100644
index 0000000..7329056
--- /dev/null
+++ b/include/linux/phy/omap_pipe3.h
@@ -0,0 +1,52 @@
+/*
+ * omap_pipe3.h -- omap pipe3 phy header file
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Author: Kishon Vijay Abraham I <kishon@xxxxxx>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __DRIVERS_OMAP_PIPE3_H
+#define __DRIVERS_OMAP_PIPE3_H
+
+#include <linux/io.h>
+
+struct pipe3_dpll_params {
+ u16 m;
+ u8 n;
+ u8 freq:3;
+ u8 sd;
+ u32 mf;
+};
+
+struct omap_pipe3 {
+ void __iomem *pll_ctrl_base;
+ struct device *dev;
+ struct device *control_dev;
+ struct clk *wkupclk;
+ struct clk *sys_clk;
+ struct clk *optclk;
+};
+
+static inline u32 omap_pipe3_readl(void __iomem *addr, unsigned offset)
+{
+ return __raw_readl(addr + offset);
+}
+
+static inline void omap_pipe3_writel(void __iomem *addr, unsigned offset,
+ u32 data)
+{
+ __raw_writel(data, addr + offset);
+}
+
+#endif /* __DRIVERS_OMAP_PIPE3_H */
--
1.7.10.4
--
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