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Message-ID: <1374842582-13242-3-git-send-email-kishon@ti.com>
Date: Fri, 26 Jul 2013 18:12:56 +0530
From: Kishon Vijay Abraham I <kishon@...com>
To: <gregkh@...uxfoundation.org>, <kyungmin.park@...sung.com>,
<balbi@...com>, <kishon@...com>, <jg1.han@...sung.com>,
<s.nawrocki@...sung.com>, <kgene.kim@...sung.com>,
<stern@...land.harvard.edu>, <broonie@...nel.org>,
<tomasz.figa@...il.com>, <arnd@...db.de>
CC: <grant.likely@...aro.org>, <tony@...mide.com>,
<swarren@...dia.com>, <devicetree-discuss@...ts.ozlabs.org>,
<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-samsung-soc@...r.kernel.org>, <linux-omap@...r.kernel.org>,
<linux-usb@...r.kernel.org>, <linux-media@...r.kernel.org>,
<linux-fbdev@...r.kernel.org>, <akpm@...ux-foundation.org>,
<balajitk@...com>, <george.cherian@...com>, <nsekhar@...com>
Subject: [PATCH v10 2/8] usb: phy: omap-usb2: use the new generic PHY framework
Used the generic PHY framework API to create the PHY. Now the power off and
power on are done in omap_usb_power_off and omap_usb_power_on respectively.
The omap-usb2 driver is also moved to driver/phy.
However using the old USB PHY library cannot be completely removed
because OTG is intertwined with PHY and moving to the new framework
will break OTG. Once we have a separate OTG state machine, we
can get rid of the USB PHY library.
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
Acked-by: Felipe Balbi <balbi@...com>
---
drivers/phy/Kconfig | 12 +++++++++
drivers/phy/Makefile | 1 +
drivers/{usb => }/phy/phy-omap-usb2.c | 45 ++++++++++++++++++++++++++++++---
drivers/usb/phy/Kconfig | 10 --------
drivers/usb/phy/Makefile | 1 -
5 files changed, 54 insertions(+), 15 deletions(-)
rename drivers/{usb => }/phy/phy-omap-usb2.c (88%)
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 349bef2..38c3477 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -15,4 +15,16 @@ config GENERIC_PHY
phy users can obtain reference to the PHY. All the users of this
framework should select this config.
+config OMAP_USB2
+ tristate "OMAP USB2 PHY Driver"
+ depends on ARCH_OMAP2PLUS
+ select GENERIC_PHY
+ select USB_PHY
+ select OMAP_CONTROL_USB
+ help
+ Enable this to support the transceiver that is part of SOC. This
+ driver takes care of all the PHY functionality apart from comparator.
+ The USB OTG controller communicates with the comparator using this
+ driver.
+
endmenu
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 9e9560f..ed5b088 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -3,3 +3,4 @@
#
obj-$(CONFIG_GENERIC_PHY) += phy-core.o
+obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o
diff --git a/drivers/usb/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
similarity index 88%
rename from drivers/usb/phy/phy-omap-usb2.c
rename to drivers/phy/phy-omap-usb2.c
index 844ab68..25e0f3c 100644
--- a/drivers/usb/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -28,6 +28,7 @@
#include <linux/pm_runtime.h>
#include <linux/delay.h>
#include <linux/usb/omap_control_usb.h>
+#include <linux/phy/phy.h>
/**
* omap_usb2_set_comparator - links the comparator present in the sytem with
@@ -119,10 +120,36 @@ static int omap_usb2_suspend(struct usb_phy *x, int suspend)
return 0;
}
+static int omap_usb_power_off(struct phy *x)
+{
+ struct omap_usb *phy = phy_get_drvdata(x);
+
+ omap_control_usb_phy_power(phy->control_dev, 0);
+
+ return 0;
+}
+
+static int omap_usb_power_on(struct phy *x)
+{
+ struct omap_usb *phy = phy_get_drvdata(x);
+
+ omap_control_usb_phy_power(phy->control_dev, 1);
+
+ return 0;
+}
+
+static struct phy_ops ops = {
+ .power_on = omap_usb_power_on,
+ .power_off = omap_usb_power_off,
+ .owner = THIS_MODULE,
+};
+
static int omap_usb2_probe(struct platform_device *pdev)
{
struct omap_usb *phy;
+ struct phy *generic_phy;
struct usb_otg *otg;
+ struct phy_provider *phy_provider;
phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
if (!phy) {
@@ -144,6 +171,11 @@ static int omap_usb2_probe(struct platform_device *pdev)
phy->phy.otg = otg;
phy->phy.type = USB_PHY_TYPE_USB2;
+ phy_provider = devm_of_phy_provider_register(phy->dev,
+ of_phy_simple_xlate);
+ if (IS_ERR(phy_provider))
+ return PTR_ERR(phy_provider);
+
phy->control_dev = omap_get_control_dev();
if (IS_ERR(phy->control_dev)) {
dev_dbg(&pdev->dev, "Failed to get control device\n");
@@ -159,6 +191,15 @@ static int omap_usb2_probe(struct platform_device *pdev)
otg->start_srp = omap_usb_start_srp;
otg->phy = &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);
+
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");
@@ -174,10 +215,6 @@ static int omap_usb2_probe(struct platform_device *pdev)
usb_add_phy_dev(&phy->phy);
- platform_set_drvdata(pdev, phy);
-
- pm_runtime_enable(phy->dev);
-
return 0;
}
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 3622fff..7813238 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -72,16 +72,6 @@ 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_USB2
- tristate "OMAP USB2 PHY Driver"
- depends on ARCH_OMAP2PLUS
- select OMAP_CONTROL_USB
- help
- Enable this to support the transceiver that is part of SOC. This
- driver takes care of all the PHY functionality apart from comparator.
- The USB OTG controller communicates with the comparator using this
- driver.
-
config OMAP_USB3
tristate "OMAP USB3 PHY Driver"
select OMAP_CONTROL_USB
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 070eca3..56d2b03 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o
obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o
obj-$(CONFIG_NOP_USB_XCEIV) += phy-nop.o
obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o
-obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o
obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o
obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o
obj-$(CONFIG_SAMSUNG_USB2PHY) += phy-samsung-usb2.o
--
1.7.10.4
--
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