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authorLinus Torvalds <torvalds@linux-foundation.org>2011-11-01 20:31:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-01 20:31:25 -0700
commit16ee792e45cf0c97ce061fce03c36cab5551ec72 (patch)
treedc68af705fbac4b5d71325aa972730199bb187dd /drivers
parentf906fb1d70e016726fccfb0d978c5d425503db9d (diff)
parentefa62e1355f0495f37f1296754b8880947c8da72 (diff)
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Merge branch 'next/devel' of git://git.linaro.org/people/arnd/arm-soc
* 'next/devel' of git://git.linaro.org/people/arnd/arm-soc: (50 commits) ARM: tegra: update defconfig arm/tegra: Harmony: Configure PMC for low-level interrupts arm/tegra: device tree support for ventana board arm/tegra: add support for ventana pinmuxing arm/tegra: prepare Seaboard pinmux code for derived boards arm/tegra: pinmux: ioremap registers gpio/tegra: Convert to a platform device arm/tegra: Convert pinmux driver to a platform device arm/dt: Tegra: Add pinmux node to tegra20.dtsi arm/tegra: Prep boards for gpio/pinmux conversion to pdevs ARM: mx5: fix clock usage for suspend ARM i.MX entry-macro.S: remove now unused code ARM i.MX boards: use CONFIG_MULTI_IRQ_HANDLER ARM i.MX tzic: add handle_irq function ARM i.MX avic: add handle_irq function ARM: mx25: Add the missing IIM base definition ARM i.MX avic: convert to use generic irq chip mx31moboard: Add poweroff support ARM: mach-qong: Add watchdog support ARM: davinci: AM18x: Add wl1271/wlan support ... Fix up conflicts in: arch/arm/mach-at91/at91sam9g45.c arch/arm/mach-mx5/devices-imx53.h arch/arm/plat-mxc/include/mach/memory.h
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/gpio-tegra.c143
-rw-r--r--drivers/mmc/host/davinci_mmc.c13
-rw-r--r--drivers/usb/host/ohci-at91.c239
3 files changed, 328 insertions, 67 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 6b65207c810..61044c889f7 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -20,10 +20,11 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
-
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
#include <asm/mach/irq.h>
@@ -35,9 +36,7 @@
#define GPIO_PORT(x) (((x) >> 3) & 0x3)
#define GPIO_BIT(x) ((x) & 0x7)
-#define GPIO_REG(x) (IO_TO_VIRT(TEGRA_GPIO_BASE) + \
- GPIO_BANK(x) * 0x80 + \
- GPIO_PORT(x) * 4)
+#define GPIO_REG(x) (GPIO_BANK(x) * 0x80 + GPIO_PORT(x) * 4)
#define GPIO_CNF(x) (GPIO_REG(x) + 0x00)
#define GPIO_OE(x) (GPIO_REG(x) + 0x10)
@@ -76,15 +75,18 @@ struct tegra_gpio_bank {
};
-static struct tegra_gpio_bank tegra_gpio_banks[] = {
- {.bank = 0, .irq = INT_GPIO1},
- {.bank = 1, .irq = INT_GPIO2},
- {.bank = 2, .irq = INT_GPIO3},
- {.bank = 3, .irq = INT_GPIO4},
- {.bank = 4, .irq = INT_GPIO5},
- {.bank = 5, .irq = INT_GPIO6},
- {.bank = 6, .irq = INT_GPIO7},
-};
+static void __iomem *regs;
+static struct tegra_gpio_bank tegra_gpio_banks[7];
+
+static inline void tegra_gpio_writel(u32 val, u32 reg)
+{
+ __raw_writel(val, regs + reg);
+}
+
+static inline u32 tegra_gpio_readl(u32 reg)
+{
+ return __raw_readl(regs + reg);
+}
static int tegra_gpio_compose(int bank, int port, int bit)
{
@@ -98,7 +100,7 @@ static void tegra_gpio_mask_write(u32 reg, int gpio, int value)
val = 0x100 << GPIO_BIT(gpio);
if (value)
val |= 1 << GPIO_BIT(gpio);
- __raw_writel(val, reg);
+ tegra_gpio_writel(val, reg);
}
void tegra_gpio_enable(int gpio)
@@ -118,7 +120,7 @@ static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset)
{
- return (__raw_readl(GPIO_IN(offset)) >> GPIO_BIT(offset)) & 0x1;
+ return (tegra_gpio_readl(GPIO_IN(offset)) >> GPIO_BIT(offset)) & 0x1;
}
static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -155,7 +157,7 @@ static void tegra_gpio_irq_ack(struct irq_data *d)
{
int gpio = d->irq - INT_GPIO_BASE;
- __raw_writel(1 << GPIO_BIT(gpio), GPIO_INT_CLR(gpio));
+ tegra_gpio_writel(1 << GPIO_BIT(gpio), GPIO_INT_CLR(gpio));
}
static void tegra_gpio_irq_mask(struct irq_data *d)
@@ -208,10 +210,10 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)
spin_lock_irqsave(&bank->lvl_lock[port], flags);
- val = __raw_readl(GPIO_INT_LVL(gpio));
+ val = tegra_gpio_readl(GPIO_INT_LVL(gpio));
val &= ~(GPIO_INT_LVL_MASK << GPIO_BIT(gpio));
val |= lvl_type << GPIO_BIT(gpio);
- __raw_writel(val, GPIO_INT_LVL(gpio));
+ tegra_gpio_writel(val, GPIO_INT_LVL(gpio));
spin_unlock_irqrestore(&bank->lvl_lock[port], flags);
@@ -237,12 +239,12 @@ static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
for (port = 0; port < 4; port++) {
int gpio = tegra_gpio_compose(bank->bank, port, 0);
- unsigned long sta = __raw_readl(GPIO_INT_STA(gpio)) &
- __raw_readl(GPIO_INT_ENB(gpio));
- u32 lvl = __raw_readl(GPIO_INT_LVL(gpio));
+ unsigned long sta = tegra_gpio_readl(GPIO_INT_STA(gpio)) &
+ tegra_gpio_readl(GPIO_INT_ENB(gpio));
+ u32 lvl = tegra_gpio_readl(GPIO_INT_LVL(gpio));
for_each_set_bit(pin, &sta, 8) {
- __raw_writel(1 << pin, GPIO_INT_CLR(gpio));
+ tegra_gpio_writel(1 << pin, GPIO_INT_CLR(gpio));
/* if gpio is edge triggered, clear condition
* before executing the hander so that we don't
@@ -276,11 +278,11 @@ void tegra_gpio_resume(void)
for (p = 0; p < ARRAY_SIZE(bank->oe); p++) {
unsigned int gpio = (b<<5) | (p<<3);
- __raw_writel(bank->cnf[p], GPIO_CNF(gpio));
- __raw_writel(bank->out[p], GPIO_OUT(gpio));
- __raw_writel(bank->oe[p], GPIO_OE(gpio));
- __raw_writel(bank->int_lvl[p], GPIO_INT_LVL(gpio));
- __raw_writel(bank->int_enb[p], GPIO_INT_ENB(gpio));
+ tegra_gpio_writel(bank->cnf[p], GPIO_CNF(gpio));
+ tegra_gpio_writel(bank->out[p], GPIO_OUT(gpio));
+ tegra_gpio_writel(bank->oe[p], GPIO_OE(gpio));
+ tegra_gpio_writel(bank->int_lvl[p], GPIO_INT_LVL(gpio));
+ tegra_gpio_writel(bank->int_enb[p], GPIO_INT_ENB(gpio));
}
}
@@ -299,11 +301,11 @@ void tegra_gpio_suspend(void)
for (p = 0; p < ARRAY_SIZE(bank->oe); p++) {
unsigned int gpio = (b<<5) | (p<<3);
- bank->cnf[p] = __raw_readl(GPIO_CNF(gpio));
- bank->out[p] = __raw_readl(GPIO_OUT(gpio));
- bank->oe[p] = __raw_readl(GPIO_OE(gpio));
- bank->int_enb[p] = __raw_readl(GPIO_INT_ENB(gpio));
- bank->int_lvl[p] = __raw_readl(GPIO_INT_LVL(gpio));
+ bank->cnf[p] = tegra_gpio_readl(GPIO_CNF(gpio));
+ bank->out[p] = tegra_gpio_readl(GPIO_OUT(gpio));
+ bank->oe[p] = tegra_gpio_readl(GPIO_OE(gpio));
+ bank->int_enb[p] = tegra_gpio_readl(GPIO_INT_ENB(gpio));
+ bank->int_lvl[p] = tegra_gpio_readl(GPIO_INT_LVL(gpio));
}
}
local_irq_restore(flags);
@@ -333,28 +335,55 @@ static struct irq_chip tegra_gpio_irq_chip = {
*/
static struct lock_class_key gpio_lock_class;
-static int __init tegra_gpio_init(void)
+static int __devinit tegra_gpio_probe(struct platform_device *pdev)
{
+ struct resource *res;
struct tegra_gpio_bank *bank;
int gpio;
int i;
int j;
+ for (i = 0; i < ARRAY_SIZE(tegra_gpio_banks); i++) {
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
+ if (!res) {
+ dev_err(&pdev->dev, "Missing IRQ resource\n");
+ return -ENODEV;
+ }
+
+ bank = &tegra_gpio_banks[i];
+ bank->bank = i;
+ bank->irq = res->start;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Missing MEM resource\n");
+ return -ENODEV;
+ }
+
+ if (!devm_request_mem_region(&pdev->dev, res->start,
+ resource_size(res),
+ dev_name(&pdev->dev))) {
+ dev_err(&pdev->dev, "Couldn't request MEM resource\n");
+ return -ENODEV;
+ }
+
+ regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ if (!regs) {
+ dev_err(&pdev->dev, "Couldn't ioremap regs\n");
+ return -ENODEV;
+ }
+
for (i = 0; i < 7; i++) {
for (j = 0; j < 4; j++) {
int gpio = tegra_gpio_compose(i, j, 0);
- __raw_writel(0x00, GPIO_INT_ENB(gpio));
+ tegra_gpio_writel(0x00, GPIO_INT_ENB(gpio));
}
}
#ifdef CONFIG_OF_GPIO
- /*
- * This isn't ideal, but it gets things hooked up until this
- * driver is converted into a platform_device
- */
- tegra_gpio_chip.of_node = of_find_compatible_node(NULL, NULL,
- "nvidia,tegra20-gpio");
-#endif /* CONFIG_OF_GPIO */
+ tegra_gpio_chip.of_node = pdev->dev.of_node;
+#endif
gpiochip_add(&tegra_gpio_chip);
@@ -384,6 +413,24 @@ static int __init tegra_gpio_init(void)
return 0;
}
+static struct of_device_id tegra_gpio_of_match[] __devinitdata = {
+ { .compatible = "nvidia,tegra20-gpio", },
+ { },
+};
+
+static struct platform_driver tegra_gpio_driver = {
+ .driver = {
+ .name = "tegra-gpio",
+ .owner = THIS_MODULE,
+ .of_match_table = tegra_gpio_of_match,
+ },
+ .probe = tegra_gpio_probe,
+};
+
+static int __init tegra_gpio_init(void)
+{
+ return platform_driver_register(&tegra_gpio_driver);
+}
postcore_initcall(tegra_gpio_init);
void __init tegra_gpio_config(struct tegra_gpio_table *table, int num)
@@ -416,13 +463,13 @@ static int dbg_gpio_show(struct seq_file *s, void *unused)
seq_printf(s,
"%d:%d %02x %02x %02x %02x %02x %02x %06x\n",
i, j,
- __raw_readl(GPIO_CNF(gpio)),
- __raw_readl(GPIO_OE(gpio)),
- __raw_readl(GPIO_OUT(gpio)),
- __raw_readl(GPIO_IN(gpio)),
- __raw_readl(GPIO_INT_STA(gpio)),
- __raw_readl(GPIO_INT_ENB(gpio)),
- __raw_readl(GPIO_INT_LVL(gpio)));
+ tegra_gpio_readl(GPIO_CNF(gpio)),
+ tegra_gpio_readl(GPIO_OE(gpio)),
+ tegra_gpio_readl(GPIO_OUT(gpio)),
+ tegra_gpio_readl(GPIO_IN(gpio)),
+ tegra_gpio_readl(GPIO_INT_STA(gpio)),
+ tegra_gpio_readl(GPIO_INT_ENB(gpio)),
+ tegra_gpio_readl(GPIO_INT_LVL(gpio)));
}
}
return 0;
diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 0076c7448fe..64a8325a4a8 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -807,12 +807,25 @@ static void calculate_clk_divider(struct mmc_host *mmc, struct mmc_ios *ios)
static void mmc_davinci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct mmc_davinci_host *host = mmc_priv(mmc);
+ struct platform_device *pdev = to_platform_device(mmc->parent);
+ struct davinci_mmc_config *config = pdev->dev.platform_data;
dev_dbg(mmc_dev(host->mmc),
"clock %dHz busmode %d powermode %d Vdd %04x\n",
ios->clock, ios->bus_mode, ios->power_mode,
ios->vdd);
+ switch (ios->power_mode) {
+ case MMC_POWER_OFF:
+ if (config && config->set_power)
+ config->set_power(pdev->id, false);
+ break;
+ case MMC_POWER_UP:
+ if (config && config->set_power)
+ config->set_power(pdev->id, true);
+ break;
+ }
+
switch (ios->bus_width) {
case MMC_BUS_WIDTH_8:
dev_dbg(mmc_dev(host->mmc), "Enabling 8 bit mode\n");
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 944291e10f9..ba3a46b78b7 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -35,8 +35,7 @@ extern int usb_disabled(void);
static void at91_start_clock(void)
{
- if (cpu_is_at91sam9261() || cpu_is_at91sam9g10())
- clk_enable(hclk);
+ clk_enable(hclk);
clk_enable(iclk);
clk_enable(fclk);
clocked = 1;
@@ -46,8 +45,7 @@ static void at91_stop_clock(void)
{
clk_disable(fclk);
clk_disable(iclk);
- if (cpu_is_at91sam9261() || cpu_is_at91sam9g10())
- clk_disable(hclk);
+ clk_disable(hclk);
clocked = 0;
}
@@ -142,8 +140,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
iclk = clk_get(&pdev->dev, "ohci_clk");
fclk = clk_get(&pdev->dev, "uhpck");
- if (cpu_is_at91sam9261() || cpu_is_at91sam9g10())
- hclk = clk_get(&pdev->dev, "hck0");
+ hclk = clk_get(&pdev->dev, "hclk");
at91_start_hc(pdev);
ohci_hcd_init(hcd_to_ohci(hcd));
@@ -155,8 +152,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
/* Error handling */
at91_stop_hc(pdev);
- if (cpu_is_at91sam9261() || cpu_is_at91sam9g10())
- clk_put(hclk);
+ clk_put(hclk);
clk_put(fclk);
clk_put(iclk);
@@ -192,8 +188,7 @@ static void usb_hcd_at91_remove(struct usb_hcd *hcd,
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
- if (cpu_is_at91sam9261() || cpu_is_at91sam9g10())
- clk_put(hclk);
+ clk_put(hclk);
clk_put(fclk);
clk_put(iclk);
fclk = iclk = hclk = NULL;
@@ -223,6 +218,156 @@ ohci_at91_start (struct usb_hcd *hcd)
return 0;
}
+static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable)
+{
+ if (port < 0 || port >= 2)
+ return;
+
+ gpio_set_value(pdata->vbus_pin[port], !pdata->vbus_pin_inverted ^ enable);
+}
+
+static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port)
+{
+ if (port < 0 || port >= 2)
+ return -EINVAL;
+
+ return gpio_get_value(pdata->vbus_pin[port]) ^ !pdata->vbus_pin_inverted;
+}
+
+/*
+ * Update the status data from the hub with the over-current indicator change.
+ */
+static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct at91_usbh_data *pdata = hcd->self.controller->platform_data;
+ int length = ohci_hub_status_data(hcd, buf);
+ int port;
+
+ for (port = 0; port < ARRAY_SIZE(pdata->overcurrent_pin); port++) {
+ if (pdata->overcurrent_changed[port]) {
+ if (! length)
+ length = 1;
+ buf[0] |= 1 << (port + 1);
+ }
+ }
+
+ return length;
+}
+
+/*
+ * Look at the control requests to the root hub and see if we need to override.
+ */
+static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct at91_usbh_data *pdata = hcd->self.controller->platform_data;
+ struct usb_hub_descriptor *desc;
+ int ret = -EINVAL;
+ u32 *data = (u32 *)buf;
+
+ dev_dbg(hcd->self.controller,
+ "ohci_at91_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n",
+ hcd, typeReq, wValue, wIndex, buf, wLength);
+
+ switch (typeReq) {
+ case SetPortFeature:
+ if (wValue == USB_PORT_FEAT_POWER) {
+ dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n");
+ ohci_at91_usb_set_power(pdata, wIndex - 1, 1);
+ goto out;
+ }
+ break;
+
+ case ClearPortFeature:
+ switch (wValue) {
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ dev_dbg(hcd->self.controller,
+ "ClearPortFeature: C_OVER_CURRENT\n");
+
+ if (wIndex == 1 || wIndex == 2) {
+ pdata->overcurrent_changed[wIndex-1] = 0;
+ pdata->overcurrent_status[wIndex-1] = 0;
+ }
+
+ goto out;
+
+ case USB_PORT_FEAT_OVER_CURRENT:
+ dev_dbg(hcd->self.controller,
+ "ClearPortFeature: OVER_CURRENT\n");
+
+ if (wIndex == 1 || wIndex == 2) {
+ pdata->overcurrent_status[wIndex-1] = 0;
+ }
+
+ goto out;
+
+ case USB_PORT_FEAT_POWER:
+ dev_dbg(hcd->self.controller,
+ "ClearPortFeature: POWER\n");
+
+ if (wIndex == 1 || wIndex == 2) {
+ ohci_at91_usb_set_power(pdata, wIndex - 1, 0);
+ return 0;
+ }
+ }
+ break;
+ }
+
+ ret = ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
+ if (ret)
+ goto out;
+
+ switch (typeReq) {
+ case GetHubDescriptor:
+
+ /* update the hub's descriptor */
+
+ desc = (struct usb_hub_descriptor *)buf;
+
+ dev_dbg(hcd->self.controller, "wHubCharacteristics 0x%04x\n",
+ desc->wHubCharacteristics);
+
+ /* remove the old configurations for power-switching, and
+ * over-current protection, and insert our new configuration
+ */
+
+ desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_LPSM);
+ desc->wHubCharacteristics |= cpu_to_le16(0x0001);
+
+ if (pdata->overcurrent_supported) {
+ desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM);
+ desc->wHubCharacteristics |= cpu_to_le16(0x0008|0x0001);
+ }
+
+ dev_dbg(hcd->self.controller, "wHubCharacteristics after 0x%04x\n",
+ desc->wHubCharacteristics);
+
+ return ret;
+
+ case GetPortStatus:
+ /* check port status */
+
+ dev_dbg(hcd->self.controller, "GetPortStatus(%d)\n", wIndex);
+
+ if (wIndex == 1 || wIndex == 2) {
+ if (! ohci_at91_usb_get_power(pdata, wIndex-1)) {
+ *data &= ~cpu_to_le32(RH_PS_PPS);
+ }
+
+ if (pdata->overcurrent_changed[wIndex-1]) {
+ *data |= cpu_to_le32(RH_PS_OCIC);
+ }
+
+ if (pdata->overcurrent_status[wIndex-1]) {
+ *data |= cpu_to_le32(RH_PS_POCI);
+ }
+ }
+ }
+
+ out:
+ return ret;
+}
+
/*-------------------------------------------------------------------------*/
static const struct hc_driver ohci_at91_hc_driver = {
@@ -258,8 +403,8 @@ static const struct hc_driver ohci_at91_hc_driver = {
/*
* root hub support
*/
- .hub_status_data = ohci_hub_status_data,
- .hub_control = ohci_hub_control,
+ .hub_status_data = ohci_at91_hub_status_data,
+ .hub_control = ohci_at91_hub_control,
#ifdef CONFIG_PM
.bus_suspend = ohci_bus_suspend,
.bus_resume = ohci_bus_resume,
@@ -269,22 +414,71 @@ static const struct hc_driver ohci_at91_hc_driver = {
/*-------------------------------------------------------------------------*/
+static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data)
+{
+ struct platform_device *pdev = data;
+ struct at91_usbh_data *pdata = pdev->dev.platform_data;
+ int val, gpio, port;
+
+ /* From the GPIO notifying the over-current situation, find
+ * out the corresponding port */
+ gpio = irq_to_gpio(irq);
+ for (port = 0; port < ARRAY_SIZE(pdata->overcurrent_pin); port++) {
+ if (pdata->overcurrent_pin[port] == gpio)
+ break;
+ }
+
+ if (port == ARRAY_SIZE(pdata->overcurrent_pin)) {
+ dev_err(& pdev->dev, "overcurrent interrupt from unknown GPIO\n");
+ return IRQ_HANDLED;
+ }
+
+ val = gpio_get_value(gpio);
+
+ /* When notified of an over-current situation, disable power
+ on the corresponding port, and mark this port in
+ over-current. */
+ if (! val) {
+ ohci_at91_usb_set_power(pdata, port, 0);
+ pdata->overcurrent_status[port] = 1;
+ pdata->overcurrent_changed[port] = 1;
+ }
+
+ dev_dbg(& pdev->dev, "overcurrent situation %s\n",
+ val ? "exited" : "notified");
+
+ return IRQ_HANDLED;
+}
+
+/*-------------------------------------------------------------------------*/
+
static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
{
struct at91_usbh_data *pdata = pdev->dev.platform_data;
int i;
if (pdata) {
- /* REVISIT make the driver support per-port power switching,
- * and also overcurrent detection. Here we assume the ports
- * are always powered while this driver is active, and use
- * active-low power switches.
- */
for (i = 0; i < ARRAY_SIZE(pdata->vbus_pin); i++) {
if (pdata->vbus_pin[i] <= 0)
continue;
gpio_request(pdata->vbus_pin[i], "ohci_vbus");
- gpio_direction_output(pdata->vbus_pin[i], 0);
+ ohci_at91_usb_set_power(pdata, i, 1);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(pdata->overcurrent_pin); i++) {
+ int ret;
+
+ if (pdata->overcurrent_pin[i] <= 0)
+ continue;
+ gpio_request(pdata->overcurrent_pin[i], "ohci_overcurrent");
+
+ ret = request_irq(gpio_to_irq(pdata->overcurrent_pin[i]),
+ ohci_hcd_at91_overcurrent_irq,
+ IRQF_SHARED, "ohci_overcurrent", pdev);
+ if (ret) {
+ gpio_free(pdata->overcurrent_pin[i]);
+ dev_warn(& pdev->dev, "cannot get GPIO IRQ for overcurrent\n");
+ }
}
}
@@ -301,9 +495,16 @@ static int ohci_hcd_at91_drv_remove(struct platform_device *pdev)
for (i = 0; i < ARRAY_SIZE(pdata->vbus_pin); i++) {
if (pdata->vbus_pin[i] <= 0)
continue;
- gpio_direction_output(pdata->vbus_pin[i], 1);
+ ohci_at91_usb_set_power(pdata, i, 0);
gpio_free(pdata->vbus_pin[i]);
}
+
+ for (i = 0; i < ARRAY_SIZE(pdata->overcurrent_pin); i++) {
+ if (pdata->overcurrent_pin[i] <= 0)
+ continue;
+ free_irq(gpio_to_irq(pdata->overcurrent_pin[i]), pdev);
+ gpio_free(pdata->overcurrent_pin[i]);
+ }
}
device_init_wakeup(&pdev->dev, 0);