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 <[email protected]> --- drivers/pinctrl/pinctrl-lpc18xx.c | 54 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 50 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/pinctrl-lpc18xx.c b/drivers/pinctrl/pinctrl-lpc18xx.c index 347c763a6a78..f0bebbe0682b 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, -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
