[PATCH v2 2/8] usb: phy: omap: Add new device types and remove omap_control_usb3_phy_power()
Roger Quadros
rogerq at ti.com
Thu Aug 15 09:15:06 EDT 2013
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 Mailbox, USB2, USB3 and DRA7.
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 at ti.com>
---
Documentation/devicetree/bindings/usb/omap-usb.txt | 29 ++--
drivers/usb/phy/phy-omap-control.c | 148 ++++++++++++--------
drivers/usb/phy/phy-omap-usb2.c | 4 +
drivers/usb/phy/phy-omap-usb3.c | 6 +-
include/linux/usb/omap_control_usb.h | 24 ++--
5 files changed, 122 insertions(+), 89 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt
index 57e71f6..1c6b54a 100644
--- a/Documentation/devicetree/bindings/usb/omap-usb.txt
+++ b/Documentation/devicetree/bindings/usb/omap-usb.txt
@@ -73,22 +73,23 @@ omap_dwc3 {
OMAP CONTROL USB
Required properties:
- - compatible: Should be "ti,omap-control-usb"
+ - compatible: Should be one of
+ "ti,omap-control-usb" - if it has otghs_control mailbox register
+ e.g. on OMAP4.
+ "ti,usb2-control-usb" - if it has Power down bit in control_dev_conf register
+ e.g. USB2_PHY on OMAP5.
+ "ti,usb3-control-usb" - if it has DPLL and individual Rx & Tx power control
+ e.g. USB3 PHY and SATA PHY on OMAP5.
+ "ti,dra7-control-usb" - if it has both power down and power aux registers
+ e.g. 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 type 1 or "power" register for other types.
+ For type 4, it must also contain "power_aux" register.
+ - reg-names: should be otghs_control for type 1 and "power" for other types.
omap_control_usb: omap-control-usb at 4a002300 {
compatible = "ti,omap-control-usb";
- reg = <0x4a002300 0x4>,
- <0x4a00233c 0x4>;
- reg-names = "control_dev_conf", "otghs_control";
- ti,type = <1>;
+ 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 3b9ee83..078c46f 100644
--- a/drivers/usb/phy/phy-omap-control.c
+++ b/drivers/usb/phy/phy-omap-control.c
@@ -46,61 +46,76 @@ 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;
+ u32 val, val_aux;
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;
+ control_usb = dev_get_drvdata(dev);
+ if (!control_usb) {
+ dev_err(dev, "%s: invalid control usb device\n", __func__);
+ return;
+ }
- val = readl(control_usb->phy_power);
+ if (control_usb->type == OMAP_CTRL_TYPE_OMAP)
+ return;
- 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;
- }
+ val = readl(control_usb->power);
- writel(val, control_usb->phy_power);
-}
-EXPORT_SYMBOL_GPL(omap_control_usb3_phy_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;
-/**
- * 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);
+ case OMAP_CTRL_TYPE_USB3:
+ 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;
- val = readl(control_usb->dev_conf);
+ case OMAP_CTRL_TYPE_DRA7:
+ val_aux = readl(control_usb->power_aux);
+ if (on) {
+ val &= ~OMAP_CTRL_USB2_PHY_PD;
+ val_aux |= 0x100;
+ } else {
+ val |= OMAP_CTRL_USB2_PHY_PD;
+ val_aux &= ~0x100;
+ }
- if (on)
- val &= ~OMAP_CTRL_DEV_PHY_PD;
- else
- val |= OMAP_CTRL_DEV_PHY_PD;
+ writel(val_aux, control_usb->power_aux);
+ 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 +187,7 @@ 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_OMAP)
return;
ctrl_usb = dev_get_drvdata(dev);
@@ -198,9 +213,7 @@ static int omap_control_usb_probe(struct platform_device *pdev)
struct resource *res;
struct device_node *np = pdev->dev.of_node;
- if (np) {
- of_property_read_u32(np, "ti,type", &control_usb->type);
- } else {
+ if (!np) {
/* We only support DT boot */
return -ENODEV;
}
@@ -212,31 +225,34 @@ static int omap_control_usb_probe(struct platform_device *pdev)
return -ENOMEM;
}
- control_usb->dev = &pdev->dev;
+ control_usb->dev = &pdev->dev;
+ control_usb->type = OMAP_CTRL_TYPE_OMAP;
- 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 (of_device_is_compatible(np, "ti,usb2-control-usb"))
+ control_usb->type = OMAP_CTRL_TYPE_USB2;
+ else if (of_device_is_compatible(np, "ti,usb3-control-usb"))
+ control_usb->type = OMAP_CTRL_TYPE_USB3;
+ else if (of_device_is_compatible(np, "ti,dra7-control-usb"))
+ control_usb->type = OMAP_CTRL_TYPE_DRA7;
- if (control_usb->type == OMAP_CTRL_DEV_TYPE1) {
+ if (control_usb->type == OMAP_CTRL_TYPE_OMAP) {
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_USB3) {
control_usb->sys_clk = devm_clk_get(control_usb->dev,
"sys_clkin");
if (IS_ERR(control_usb->sys_clk)) {
@@ -245,6 +261,15 @@ static int omap_control_usb_probe(struct platform_device *pdev)
}
}
+ if (control_usb->type == OMAP_CTRL_TYPE_DRA7) {
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "power_aux");
+ control_usb->power_aux = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(control_usb->power_aux)) {
+ dev_err(&pdev->dev, "Couldn't get power_aux register\n");
+ return PTR_ERR(control_usb->power_aux);
+ }
+ }
dev_set_drvdata(control_usb->dev, control_usb);
@@ -254,6 +279,9 @@ static int omap_control_usb_probe(struct platform_device *pdev)
#ifdef CONFIG_OF
static const struct of_device_id omap_control_usb_id_table[] = {
{ .compatible = "ti,omap-control-usb" },
+ { .compatible = "ti,usb2-control-usb" },
+ { .compatible = "ti,usb3-control-usb" },
+ { .compatible = "ti,dra7-control-usb" },
{}
};
MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
diff --git a/drivers/usb/phy/phy-omap-usb2.c b/drivers/usb/phy/phy-omap-usb2.c
index 844ab68..376b367 100644
--- a/drivers/usb/phy/phy-omap-usb2.c
+++ b/drivers/usb/phy/phy-omap-usb2.c
@@ -123,6 +123,10 @@ static int omap_usb2_probe(struct platform_device *pdev)
{
struct omap_usb *phy;
struct usb_otg *otg;
+ struct device_node *node = pdev->dev.of_node;
+
+ if (!node)
+ return -ENODEV;
phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
if (!phy) {
diff --git a/drivers/usb/phy/phy-omap-usb3.c b/drivers/usb/phy/phy-omap-usb3.c
index fc15694..4a7f27c 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..9eb6f9ca 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_OMAP = 1, /* Mailbox OTGHS_CONTROL */
+ OMAP_CTRL_TYPE_USB2, /* USB2_PHY, power down in CONTROL_DEV_CONF */
+ OMAP_CTRL_TYPE_USB3, /* USB3_PHY, DPLL & seperate Rx/Tx power */
+ OMAP_CTRL_TYPE_DRA7, /* 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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