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Date: Thu, 3 Oct 2013 12:59:00 +0300
From: Roger Quadros <rogerq@...com>
To: <balbi@...com>, <bcousson@...libre.com>
CC: <tony@...mide.com>, <george.cherian@...com>, <kishon@...com>,
<bigeasy@...utronix.de>, <sergei.shtylyov@...entembedded.com>,
<thomas.langer@...tiq.com>, <linux-usb@...r.kernel.org>,
<linux-omap@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Roger Quadros <rogerq@...com>
Subject: [PATCH v8 2/8] usb: phy: omap: Add new device types and remove omap_control_usb3_phy_power()
Add support for new device types and in the process rid of "ti,type"
device tree property. The correct type of device will be determined
from the compatible string instead.
Introduce a compatible string for each device type. At the moment
we support 4 types OTGHS, USB2, PIPE3 (e.g. USB3) and DRA7USB2.
Update DT binding information to reflect these changes.
Also get rid of omap_control_usb3_phy_power(). Just one function
i.e. omap_control_usb_phy_power() will now take care of all PHY types.
Signed-off-by: Roger Quadros <rogerq@...com>
---
Documentation/devicetree/bindings/usb/omap-usb.txt | 30 ++--
drivers/usb/phy/phy-omap-control.c | 173 +++++++++++--------
drivers/usb/phy/phy-omap-usb3.c | 6 +-
include/linux/usb/omap_control_usb.h | 24 ++--
4 files changed, 130 insertions(+), 103 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt
index 661cb06..9add35c 100644
--- a/Documentation/devicetree/bindings/usb/omap-usb.txt
+++ b/Documentation/devicetree/bindings/usb/omap-usb.txt
@@ -83,22 +83,22 @@ omap_dwc3 {
OMAP CONTROL USB
Required properties:
- - compatible: Should be "ti,omap-control-usb"
+ - compatible: Should be one of
+ "ti,control-phy-otghs" - if it has otghs_control mailbox register as on OMAP4.
+ "ti,control-phy-usb2" - if it has Power down bit in control_dev_conf register
+ e.g. USB2_PHY on OMAP5.
+ "ti,control-phy-pipe3" - if it has DPLL and individual Rx & Tx power control
+ e.g. USB3 PHY and SATA PHY on OMAP5.
+ "ti,control-phy-dra7usb2" - if it has power down register like USB2 PHY on
+ DRA7 platform.
- reg : Address and length of the register set for the device. It contains
- the address of "control_dev_conf" and "otghs_control" or "phy_power_usb"
- depending upon omap4 or omap5.
- - reg-names: The names of the register addresses corresponding to the registers
- filled in "reg".
- - ti,type: This is used to differentiate whether the control module has
- usb mailbox or usb3 phy power. omap4 has usb mailbox in control module to
- notify events to the musb core and omap5 has usb3 phy power register to
- power on usb3 phy. Should be "1" if it has mailbox and "2" if it has usb3
- phy power.
+ the address of "otghs_control" for control-phy-otghs or "power" register
+ for other types.
+ - reg-names: should be "otghs_control" control-phy-otghs and "power" for
+ other types.
omap_control_usb: omap-control-usb@...02300 {
- compatible = "ti,omap-control-usb";
- reg = <0x4a002300 0x4>,
- <0x4a00233c 0x4>;
- reg-names = "control_dev_conf", "otghs_control";
- ti,type = <1>;
+ compatible = "ti,control-phy-otghs";
+ reg = <0x4a00233c 0x4>;
+ reg-names = "otghs_control";
};
diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c
index 9772592..1c8a7c5 100644
--- a/drivers/usb/phy/phy-omap-control.c
+++ b/drivers/usb/phy/phy-omap-control.c
@@ -20,6 +20,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/clk.h>
@@ -46,61 +47,70 @@ struct device *omap_get_control_dev(void)
EXPORT_SYMBOL_GPL(omap_get_control_dev);
/**
- * omap_control_usb3_phy_power - power on/off the serializer using control
- * module
+ * omap_control_usb_phy_power - power on/off the phy using control module reg
* @dev: the control module device
- * @on: 0 to off and 1 to on based on powering on or off the PHY
- *
- * usb3 PHY driver should call this API to power on or off the PHY.
+ * @on: 0 or 1, based on powering on or off the PHY
*/
-void omap_control_usb3_phy_power(struct device *dev, bool on)
+void omap_control_usb_phy_power(struct device *dev, int on)
{
u32 val;
unsigned long rate;
- struct omap_control_usb *control_usb = dev_get_drvdata(dev);
+ struct omap_control_usb *control_usb;
- if (control_usb->type != OMAP_CTRL_DEV_TYPE2)
+ if (IS_ERR(dev) || !dev) {
+ pr_err("%s: invalid device\n", __func__);
return;
+ }
- rate = clk_get_rate(control_usb->sys_clk);
- rate = rate/1000000;
-
- val = readl(control_usb->phy_power);
-
- if (on) {
- val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK |
- OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK);
- val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON <<
- OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
- val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT;
- } else {
- val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK;
- val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF <<
- OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
+ control_usb = dev_get_drvdata(dev);
+ if (!control_usb) {
+ dev_err(dev, "%s: invalid control usb device\n", __func__);
+ return;
}
- writel(val, control_usb->phy_power);
-}
-EXPORT_SYMBOL_GPL(omap_control_usb3_phy_power);
+ if (control_usb->type == OMAP_CTRL_TYPE_OTGHS)
+ return;
-/**
- * omap_control_usb_phy_power - power on/off the phy using control module reg
- * @dev: the control module device
- * @on: 0 or 1, based on powering on or off the PHY
- */
-void omap_control_usb_phy_power(struct device *dev, int on)
-{
- u32 val;
- struct omap_control_usb *control_usb = dev_get_drvdata(dev);
+ val = readl(control_usb->power);
+
+ switch (control_usb->type) {
+ case OMAP_CTRL_TYPE_USB2:
+ if (on)
+ val &= ~OMAP_CTRL_DEV_PHY_PD;
+ else
+ val |= OMAP_CTRL_DEV_PHY_PD;
+ break;
- val = readl(control_usb->dev_conf);
+ case OMAP_CTRL_TYPE_PIPE3:
+ rate = clk_get_rate(control_usb->sys_clk);
+ rate = rate/1000000;
+
+ if (on) {
+ val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK |
+ OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK);
+ val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON <<
+ OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
+ val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT;
+ } else {
+ val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK;
+ val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF <<
+ OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT;
+ }
+ break;
- if (on)
- val &= ~OMAP_CTRL_DEV_PHY_PD;
- else
- val |= OMAP_CTRL_DEV_PHY_PD;
+ case OMAP_CTRL_TYPE_DRA7USB2:
+ if (on)
+ val &= ~OMAP_CTRL_USB2_PHY_PD;
+ else
+ val |= OMAP_CTRL_USB2_PHY_PD;
+ break;
+ default:
+ dev_err(dev, "%s: type %d not recognized\n",
+ __func__, control_usb->type);
+ break;
+ }
- writel(val, control_usb->dev_conf);
+ writel(val, control_usb->power);
}
EXPORT_SYMBOL_GPL(omap_control_usb_phy_power);
@@ -172,7 +182,7 @@ void omap_control_usb_set_mode(struct device *dev,
{
struct omap_control_usb *ctrl_usb;
- if (IS_ERR(dev) || control_usb->type != OMAP_CTRL_DEV_TYPE1)
+ if (IS_ERR(dev) || control_usb->type != OMAP_CTRL_TYPE_OTGHS)
return;
ctrl_usb = dev_get_drvdata(dev);
@@ -193,10 +203,45 @@ void omap_control_usb_set_mode(struct device *dev,
}
EXPORT_SYMBOL_GPL(omap_control_usb_set_mode);
+#ifdef CONFIG_OF
+
+static const enum omap_control_usb_type otghs_data = OMAP_CTRL_TYPE_OTGHS;
+static const enum omap_control_usb_type usb2_data = OMAP_CTRL_TYPE_USB2;
+static const enum omap_control_usb_type pipe3_data = OMAP_CTRL_TYPE_PIPE3;
+static const enum omap_control_usb_type dra7usb2_data = OMAP_CTRL_TYPE_DRA7USB2;
+
+static const struct of_device_id omap_control_usb_id_table[] = {
+ {
+ .compatible = "ti,control-phy-otghs",
+ .data = &otghs_data,
+ },
+ {
+ .compatible = "ti,control-phy-usb2",
+ .data = &usb2_data,
+ },
+ {
+ .compatible = "ti,control-phy-pipe3",
+ .data = &pipe3_data,
+ },
+ {
+ .compatible = "ti,control-phy-dra7usb2",
+ .data = &dra7usb2_data,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
+#endif
+
+
static int omap_control_usb_probe(struct platform_device *pdev)
{
struct resource *res;
- struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *of_id;
+
+ of_id = of_match_device(of_match_ptr(omap_control_usb_id_table),
+ &pdev->dev);
+ if (!of_id)
+ return -EINVAL;
control_usb = devm_kzalloc(&pdev->dev, sizeof(*control_usb),
GFP_KERNEL);
@@ -205,36 +250,27 @@ static int omap_control_usb_probe(struct platform_device *pdev)
return -ENOMEM;
}
- if (np)
- of_property_read_u32(np, "ti,type", &control_usb->type);
- else
- return -EINVAL; /* We only support DT boot */
-
- control_usb->dev = &pdev->dev;
+ control_usb->dev = &pdev->dev;
+ control_usb->type = *(enum omap_control_usb_type *)of_id->data;
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "control_dev_conf");
- control_usb->dev_conf = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(control_usb->dev_conf))
- return PTR_ERR(control_usb->dev_conf);
-
- if (control_usb->type == OMAP_CTRL_DEV_TYPE1) {
+ if (control_usb->type == OMAP_CTRL_TYPE_OTGHS) {
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"otghs_control");
control_usb->otghs_control = devm_ioremap_resource(
&pdev->dev, res);
if (IS_ERR(control_usb->otghs_control))
return PTR_ERR(control_usb->otghs_control);
- }
-
- if (control_usb->type == OMAP_CTRL_DEV_TYPE2) {
+ } else {
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "phy_power_usb");
- control_usb->phy_power = devm_ioremap_resource(
- &pdev->dev, res);
- if (IS_ERR(control_usb->phy_power))
- return PTR_ERR(control_usb->phy_power);
+ "power");
+ control_usb->power = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(control_usb->power)) {
+ dev_err(&pdev->dev, "Couldn't get power register\n");
+ return PTR_ERR(control_usb->power);
+ }
+ }
+ if (control_usb->type == OMAP_CTRL_TYPE_PIPE3) {
control_usb->sys_clk = devm_clk_get(control_usb->dev,
"sys_clkin");
if (IS_ERR(control_usb->sys_clk)) {
@@ -243,20 +279,11 @@ static int omap_control_usb_probe(struct platform_device *pdev)
}
}
-
dev_set_drvdata(control_usb->dev, control_usb);
return 0;
}
-#ifdef CONFIG_OF
-static const struct of_device_id omap_control_usb_id_table[] = {
- { .compatible = "ti,omap-control-usb" },
- {}
-};
-MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
-#endif
-
static struct platform_driver omap_control_usb_driver = {
.probe = omap_control_usb_probe,
.driver = {
diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/usb/phy/phy-omap-usb3.c
index 4e8a040..0824be4 100644
--- a/drivers/usb/phy/phy-omap-usb3.c
+++ b/drivers/usb/phy/phy-omap-usb3.c
@@ -100,7 +100,7 @@ static int omap_usb3_suspend(struct usb_phy *x, int suspend)
udelay(1);
} while (--timeout);
- omap_control_usb3_phy_power(phy->control_dev, 0);
+ omap_control_usb_phy_power(phy->control_dev, 0);
phy->is_suspended = 1;
} else if (!suspend && phy->is_suspended) {
@@ -189,7 +189,7 @@ static int omap_usb3_init(struct usb_phy *x)
if (ret)
return ret;
- omap_control_usb3_phy_power(phy->control_dev, 1);
+ omap_control_usb_phy_power(phy->control_dev, 1);
return 0;
}
@@ -245,7 +245,7 @@ static int omap_usb3_probe(struct platform_device *pdev)
return -ENODEV;
}
- omap_control_usb3_phy_power(phy->control_dev, 0);
+ omap_control_usb_phy_power(phy->control_dev, 0);
usb_add_phy_dev(&phy->phy);
platform_set_drvdata(pdev, phy);
diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h
index e2416b4..61b889a 100644
--- a/include/linux/usb/omap_control_usb.h
+++ b/include/linux/usb/omap_control_usb.h
@@ -19,16 +19,23 @@
#ifndef __OMAP_CONTROL_USB_H__
#define __OMAP_CONTROL_USB_H__
+enum omap_control_usb_type {
+ OMAP_CTRL_TYPE_OTGHS = 1, /* Mailbox OTGHS_CONTROL */
+ OMAP_CTRL_TYPE_USB2, /* USB2_PHY, power down in CONTROL_DEV_CONF */
+ OMAP_CTRL_TYPE_PIPE3, /* PIPE3 PHY, DPLL & seperate Rx/Tx power */
+ OMAP_CTRL_TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */
+};
+
struct omap_control_usb {
struct device *dev;
- u32 __iomem *dev_conf;
u32 __iomem *otghs_control;
- u32 __iomem *phy_power;
+ u32 __iomem *power;
+ u32 __iomem *power_aux;
struct clk *sys_clk;
- u32 type;
+ enum omap_control_usb_type type;
};
enum omap_control_usb_mode {
@@ -38,10 +45,6 @@ enum omap_control_usb_mode {
USB_MODE_DISCONNECT,
};
-/* To differentiate ctrl module IP having either mailbox or USB3 PHY power */
-#define OMAP_CTRL_DEV_TYPE1 0x1
-#define OMAP_CTRL_DEV_TYPE2 0x2
-
#define OMAP_CTRL_DEV_PHY_PD BIT(0)
#define OMAP_CTRL_DEV_AVALID BIT(0)
@@ -59,10 +62,11 @@ enum omap_control_usb_mode {
#define OMAP_CTRL_USB3_PHY_TX_RX_POWERON 0x3
#define OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF 0x0
+#define OMAP_CTRL_USB2_PHY_PD BIT(28)
+
#if IS_ENABLED(CONFIG_OMAP_CONTROL_USB)
extern struct device *omap_get_control_dev(void);
extern void omap_control_usb_phy_power(struct device *dev, int on);
-extern void omap_control_usb3_phy_power(struct device *dev, bool on);
extern void omap_control_usb_set_mode(struct device *dev,
enum omap_control_usb_mode mode);
#else
@@ -75,10 +79,6 @@ static inline void omap_control_usb_phy_power(struct device *dev, int on)
{
}
-static inline void omap_control_usb3_phy_power(struct device *dev, int on)
-{
-}
-
static inline void omap_control_usb_set_mode(struct device *dev,
enum omap_control_usb_mode mode)
{
--
1.7.4.1
--
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