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authorJoachim Eastwood <manabian@gmail.com>2015-07-15 00:25:27 +0200
committerLinus Walleij <linus.walleij@linaro.org>2015-07-17 14:23:15 +0200
commitbd6eab90073814a3211fc9688c2d59ce369ccff2 (patch)
treeecb0c129d94bd846db6bf0ba78d8e22abaaa14af /drivers/pinctrl/pinctrl-lpc18xx.c
parentd96310aeddc692cf1f06861cf722c4843e0a3f28 (diff)
pinctrl: lpc18xx: add support for usb1 pinconf
The dedicated USB1 pins can be configured with pull-down and for low power mode (suspend). Add support for this in the pinctrl driver. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-lpc18xx.c')
-rw-r--r--drivers/pinctrl/pinctrl-lpc18xx.c54
1 files changed, 50 insertions, 4 deletions
diff --git a/drivers/pinctrl/pinctrl-lpc18xx.c b/drivers/pinctrl/pinctrl-lpc18xx.c
index ef0b697639a7..e56f9203cc87 100644
--- a/drivers/pinctrl/pinctrl-lpc18xx.c
+++ b/drivers/pinctrl/pinctrl-lpc18xx.c
@@ -37,6 +37,9 @@
#define LPC18XX_SCU_PIN_EHD_MASK 0x300
#define LPC18XX_SCU_PIN_EHD_POS 8
+#define LPC18XX_SCU_USB1_EPD BIT(2)
+#define LPC18XX_SCU_USB1_EPWR BIT(4)
+
#define LPC18XX_SCU_I2C0_EFP BIT(0)
#define LPC18XX_SCU_I2C0_EHD BIT(2)
#define LPC18XX_SCU_I2C0_EZI BIT(3)
@@ -617,8 +620,31 @@ static const struct pinctrl_pin_desc lpc18xx_pins[] = {
static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg)
{
- /* TODO */
- return -ENOTSUPP;
+ switch (param) {
+ case PIN_CONFIG_LOW_POWER_MODE:
+ if (reg & LPC18XX_SCU_USB1_EPWR)
+ *arg = 0;
+ else
+ *arg = 1;
+ break;
+
+ case PIN_CONFIG_BIAS_DISABLE:
+ if (reg & LPC18XX_SCU_USB1_EPD)
+ return -EINVAL;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ if (reg & LPC18XX_SCU_USB1_EPD)
+ *arg = 1;
+ else
+ return -EINVAL;
+ break;
+
+ default:
+ return -ENOTSUPP;
+ }
+
+ return 0;
}
static int lpc18xx_pconf_get_i2c0(enum pin_config_param param, int *arg, u32 reg,
@@ -782,8 +808,28 @@ static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev,
enum pin_config_param param,
u16 param_val, u32 *reg)
{
- /* TODO */
- return -ENOTSUPP;
+ switch (param) {
+ case PIN_CONFIG_LOW_POWER_MODE:
+ if (param_val)
+ *reg &= ~LPC18XX_SCU_USB1_EPWR;
+ else
+ *reg |= LPC18XX_SCU_USB1_EPWR;
+ break;
+
+ case PIN_CONFIG_BIAS_DISABLE:
+ *reg &= ~LPC18XX_SCU_USB1_EPD;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ *reg |= LPC18XX_SCU_USB1_EPD;
+ break;
+
+ default:
+ dev_err(pctldev->dev, "Property not supported\n");
+ return -ENOTSUPP;
+ }
+
+ return 0;
}
static int lpc18xx_pconf_set_i2c0(struct pinctrl_dev *pctldev,