gpio: qcom_pmic: drop pon GPIO driver

Remove the (now unused) GPIO driver for the power and resin buttons on
the PMIC.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Tested-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

2 files changed, 2 insertions, 107 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 63e62e1acd2..27df5d88d40 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -318,12 +318,11 @@ config CMD_PCA953X
 config QCOM_PMIC_GPIO
 	bool "Qualcomm generic PMIC GPIO/keypad driver"
 	depends on DM_GPIO && PMIC_QCOM
+	select BUTTON
 	help
 	  Support for GPIO pins and power/reset buttons found on
 	  Qualcomm SoCs PMIC.
-	  Default name for GPIO bank is "pm8916".
-	  Power and reset buttons are placed in "pwkey_qcom" bank and
-          have gpio numbers 0 and 1 respectively.
+	  The GPIO bank is called "pmic"
 
 config PCF8575_GPIO
 	bool "PCF8575 I2C GPIO Expander driver"
diff --git a/drivers/gpio/qcom_pmic_gpio.c b/drivers/gpio/qcom_pmic_gpio.c
index e5841f50295..7b83c67fa46 100644
--- a/drivers/gpio/qcom_pmic_gpio.c
+++ b/drivers/gpio/qcom_pmic_gpio.c
@@ -275,107 +275,3 @@ U_BOOT_DRIVER(qcom_pmic_gpio) = {
 	.priv_auto	= sizeof(struct qcom_gpio_bank),
 };
 
-
-/* Add pmic buttons as GPIO as well - there is no generic way for now */
-#define PON_INT_RT_STS                        0x10
-#define KPDPWR_ON_INT_BIT                     0
-#define RESIN_ON_INT_BIT                      1
-
-static int qcom_pwrkey_get_function(struct udevice *dev, unsigned offset)
-{
-	return GPIOF_INPUT;
-}
-
-static int qcom_pwrkey_get_value(struct udevice *dev, unsigned offset)
-{
-	struct qcom_gpio_bank *priv = dev_get_priv(dev);
-
-	int reg = pmic_reg_read(dev->parent, priv->pid + PON_INT_RT_STS);
-
-	if (reg < 0)
-		return 0;
-
-	switch (offset) {
-	case 0: /* Power button */
-		return (reg & BIT(KPDPWR_ON_INT_BIT)) != 0;
-		break;
-	case 1: /* Reset button */
-	default:
-		return (reg & BIT(RESIN_ON_INT_BIT)) != 0;
-		break;
-	}
-}
-
-/*
- * Since pmic buttons modelled as GPIO, we need empty direction functions
- * to trick u-boot button driver
- */
-static int qcom_pwrkey_direction_input(struct udevice *dev, unsigned int offset)
-{
-	return 0;
-}
-
-static int qcom_pwrkey_direction_output(struct udevice *dev, unsigned int offset, int value)
-{
-	return -EOPNOTSUPP;
-}
-
-static const struct dm_gpio_ops qcom_pwrkey_ops = {
-	.get_value		= qcom_pwrkey_get_value,
-	.get_function		= qcom_pwrkey_get_function,
-	.direction_input	= qcom_pwrkey_direction_input,
-	.direction_output	= qcom_pwrkey_direction_output,
-};
-
-static int qcom_pwrkey_probe(struct udevice *dev)
-{
-	struct qcom_gpio_bank *priv = dev_get_priv(dev);
-	int reg;
-	u64 pid;
-
-	pid = dev_read_addr(dev);
-	if (pid == FDT_ADDR_T_NONE)
-		return log_msg_ret("bad address", -EINVAL);
-
-	priv->pid = pid;
-
-	/* Do a sanity check */
-	reg = pmic_reg_read(dev->parent, priv->pid + REG_TYPE);
-	if (reg != 0x1)
-		return log_msg_ret("bad type", -ENXIO);
-
-	reg = pmic_reg_read(dev->parent, priv->pid + REG_SUBTYPE);
-	if ((reg & 0x5) == 0)
-		return log_msg_ret("bad subtype", -ENXIO);
-
-	return 0;
-}
-
-static int qcom_pwrkey_of_to_plat(struct udevice *dev)
-{
-	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
-
-	uc_priv->gpio_count = 2;
-	uc_priv->bank_name = dev_read_string(dev, "gpio-bank-name");
-	if (uc_priv->bank_name == NULL)
-		uc_priv->bank_name = "pwkey_qcom";
-
-	return 0;
-}
-
-static const struct udevice_id qcom_pwrkey_ids[] = {
-	{ .compatible = "qcom,pm8916-pwrkey" },
-	{ .compatible = "qcom,pm8994-pwrkey" },
-	{ .compatible = "qcom,pm8998-pwrkey" },
-	{ }
-};
-
-U_BOOT_DRIVER(pwrkey_qcom) = {
-	.name	= "pwrkey_qcom",
-	.id	= UCLASS_GPIO,
-	.of_match = qcom_pwrkey_ids,
-	.of_to_plat = qcom_pwrkey_of_to_plat,
-	.probe	= qcom_pwrkey_probe,
-	.ops	= &qcom_pwrkey_ops,
-	.priv_auto	= sizeof(struct qcom_gpio_bank),
-};