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Commit bd6eab90 authored by Joachim Eastwood's avatar Joachim Eastwood Committed by Linus Walleij
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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: default avatarJoachim Eastwood <manabian@gmail.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent d96310ae

drivers/pinctrl/pinctrl-lpc18xx.c

+50 −4
Original line number Diff line number Diff line
@@ -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)
@@ -617,10 +620,33 @@ static const struct pinctrl_pin_desc lpc18xx_pins[] = { 


static int lpc18xx_pconf_get_usb1(enum pin_config_param param, int *arg, u32 reg)

{

	/* TODO */

	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,

				  unsigned pin)

{
@@ -782,10 +808,30 @@ static int lpc18xx_pconf_set_usb1(struct pinctrl_dev *pctldev, 
				  enum pin_config_param param,

				  u16 param_val, u32 *reg)

{

	/* TODO */

	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,

				  enum pin_config_param param,

				  u16 param_val, u32 *reg,