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path: root/drivers/phy/phy-rcar-gen3-usb2.c
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Diffstat (limited to 'drivers/phy/phy-rcar-gen3-usb2.c')
-rw-r--r--drivers/phy/phy-rcar-gen3-usb2.c98
1 files changed, 68 insertions, 30 deletions
diff --git a/drivers/phy/phy-rcar-gen3-usb2.c b/drivers/phy/phy-rcar-gen3-usb2.c
index bc4f7dd82..4be3f5dbb 100644
--- a/drivers/phy/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/phy-rcar-gen3-usb2.c
@@ -12,6 +12,7 @@
* published by the Free Software Foundation.
*/
+#include <linux/extcon.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
@@ -19,6 +20,7 @@
#include <linux/of_address.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
/******* USB2.0 Host registers (original offset is +0x200) *******/
#define USB2_INT_ENABLE 0x000
@@ -74,20 +76,17 @@
#define USB2_ADPCTRL_IDPULLUP BIT(5) /* 1 = ID sampling is enabled */
#define USB2_ADPCTRL_DRVVBUS BIT(4)
-struct rcar_gen3_data {
- void __iomem *base;
- struct clk *clk;
-};
-
struct rcar_gen3_chan {
- struct rcar_gen3_data usb2;
+ void __iomem *base;
+ struct extcon_dev *extcon;
struct phy *phy;
+ struct regulator *vbus;
bool has_otg;
};
static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host)
{
- void __iomem *usb2_base = ch->usb2.base;
+ void __iomem *usb2_base = ch->base;
u32 val = readl(usb2_base + USB2_COMMCTRL);
dev_vdbg(&ch->phy->dev, "%s: %08x, %d\n", __func__, val, host);
@@ -100,7 +99,7 @@ static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host)
static void rcar_gen3_set_linectrl(struct rcar_gen3_chan *ch, int dp, int dm)
{
- void __iomem *usb2_base = ch->usb2.base;
+ void __iomem *usb2_base = ch->base;
u32 val = readl(usb2_base + USB2_LINECTRL1);
dev_vdbg(&ch->phy->dev, "%s: %08x, %d, %d\n", __func__, val, dp, dm);
@@ -114,7 +113,7 @@ static void rcar_gen3_set_linectrl(struct rcar_gen3_chan *ch, int dp, int dm)
static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus)
{
- void __iomem *usb2_base = ch->usb2.base;
+ void __iomem *usb2_base = ch->base;
u32 val = readl(usb2_base + USB2_ADPCTRL);
dev_vdbg(&ch->phy->dev, "%s: %08x, %d\n", __func__, val, vbus);
@@ -130,6 +129,9 @@ static void rcar_gen3_init_for_host(struct rcar_gen3_chan *ch)
rcar_gen3_set_linectrl(ch, 1, 1);
rcar_gen3_set_host_mode(ch, 1);
rcar_gen3_enable_vbus_ctrl(ch, 1);
+
+ extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, true);
+ extcon_set_cable_state_(ch->extcon, EXTCON_USB, false);
}
static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
@@ -137,28 +139,19 @@ static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
rcar_gen3_set_linectrl(ch, 0, 1);
rcar_gen3_set_host_mode(ch, 0);
rcar_gen3_enable_vbus_ctrl(ch, 0);
-}
-static bool rcar_gen3_check_vbus(struct rcar_gen3_chan *ch)
-{
- return !!(readl(ch->usb2.base + USB2_ADPCTRL) &
- USB2_ADPCTRL_OTGSESSVLD);
+ extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, false);
+ extcon_set_cable_state_(ch->extcon, EXTCON_USB, true);
}
static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch)
{
- return !!(readl(ch->usb2.base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG);
+ return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG);
}
static void rcar_gen3_device_recognition(struct rcar_gen3_chan *ch)
{
- bool is_host = true;
-
- /* B-device? */
- if (rcar_gen3_check_id(ch) && rcar_gen3_check_vbus(ch))
- is_host = false;
-
- if (is_host)
+ if (!rcar_gen3_check_id(ch))
rcar_gen3_init_for_host(ch);
else
rcar_gen3_init_for_peri(ch);
@@ -166,7 +159,7 @@ static void rcar_gen3_device_recognition(struct rcar_gen3_chan *ch)
static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch)
{
- void __iomem *usb2_base = ch->usb2.base;
+ void __iomem *usb2_base = ch->base;
u32 val;
val = readl(usb2_base + USB2_VBCTRL);
@@ -187,7 +180,7 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch)
static int rcar_gen3_phy_usb2_init(struct phy *p)
{
struct rcar_gen3_chan *channel = phy_get_drvdata(p);
- void __iomem *usb2_base = channel->usb2.base;
+ void __iomem *usb2_base = channel->base;
/* Initialize USB2 part */
writel(USB2_INT_ENABLE_INIT, usb2_base + USB2_INT_ENABLE);
@@ -205,7 +198,7 @@ static int rcar_gen3_phy_usb2_exit(struct phy *p)
{
struct rcar_gen3_chan *channel = phy_get_drvdata(p);
- writel(0, channel->usb2.base + USB2_INT_ENABLE);
+ writel(0, channel->base + USB2_INT_ENABLE);
return 0;
}
@@ -213,8 +206,15 @@ static int rcar_gen3_phy_usb2_exit(struct phy *p)
static int rcar_gen3_phy_usb2_power_on(struct phy *p)
{
struct rcar_gen3_chan *channel = phy_get_drvdata(p);
- void __iomem *usb2_base = channel->usb2.base;
+ void __iomem *usb2_base = channel->base;
u32 val;
+ int ret;
+
+ if (channel->vbus) {
+ ret = regulator_enable(channel->vbus);
+ if (ret)
+ return ret;
+ }
val = readl(usb2_base + USB2_USBCTR);
val |= USB2_USBCTR_PLL_RST;
@@ -225,17 +225,29 @@ static int rcar_gen3_phy_usb2_power_on(struct phy *p)
return 0;
}
+static int rcar_gen3_phy_usb2_power_off(struct phy *p)
+{
+ struct rcar_gen3_chan *channel = phy_get_drvdata(p);
+ int ret = 0;
+
+ if (channel->vbus)
+ ret = regulator_disable(channel->vbus);
+
+ return ret;
+}
+
static struct phy_ops rcar_gen3_phy_usb2_ops = {
.init = rcar_gen3_phy_usb2_init,
.exit = rcar_gen3_phy_usb2_exit,
.power_on = rcar_gen3_phy_usb2_power_on,
+ .power_off = rcar_gen3_phy_usb2_power_off,
.owner = THIS_MODULE,
};
static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch)
{
struct rcar_gen3_chan *ch = _ch;
- void __iomem *usb2_base = ch->usb2.base;
+ void __iomem *usb2_base = ch->base;
u32 status = readl(usb2_base + USB2_OBINTSTA);
irqreturn_t ret = IRQ_NONE;
@@ -251,10 +263,17 @@ static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch)
static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = {
{ .compatible = "renesas,usb2-phy-r8a7795" },
+ { .compatible = "renesas,rcar-gen3-usb2-phy" },
{ }
};
MODULE_DEVICE_TABLE(of, rcar_gen3_phy_usb2_match_table);
+static const unsigned int rcar_gen3_phy_cable[] = {
+ EXTCON_USB,
+ EXTCON_USB_HOST,
+ EXTCON_NONE,
+};
+
static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -273,18 +292,30 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- channel->usb2.base = devm_ioremap_resource(dev, res);
- if (IS_ERR(channel->usb2.base))
- return PTR_ERR(channel->usb2.base);
+ channel->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(channel->base))
+ return PTR_ERR(channel->base);
/* call request_irq for OTG */
irq = platform_get_irq(pdev, 0);
if (irq >= 0) {
+ int ret;
+
irq = devm_request_irq(dev, irq, rcar_gen3_phy_usb2_irq,
IRQF_SHARED, dev_name(dev), channel);
if (irq < 0)
dev_err(dev, "No irq handler (%d)\n", irq);
channel->has_otg = true;
+ channel->extcon = devm_extcon_dev_allocate(dev,
+ rcar_gen3_phy_cable);
+ if (IS_ERR(channel->extcon))
+ return PTR_ERR(channel->extcon);
+
+ ret = devm_extcon_dev_register(dev, channel->extcon);
+ if (ret < 0) {
+ dev_err(dev, "Failed to register extcon\n");
+ return ret;
+ }
}
/* devm_phy_create() will call pm_runtime_enable(dev); */
@@ -294,6 +325,13 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
return PTR_ERR(channel->phy);
}
+ channel->vbus = devm_regulator_get_optional(dev, "vbus");
+ if (IS_ERR(channel->vbus)) {
+ if (PTR_ERR(channel->vbus) == -EPROBE_DEFER)
+ return PTR_ERR(channel->vbus);
+ channel->vbus = NULL;
+ }
+
phy_set_drvdata(channel->phy, channel);
provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 13:01:05 +0000