Linux-libre 4.6.2-gnu

1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index 3878d23ca..6ab8c3ccd 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -43,10 +43,13 @@
 
 #define MAX_GPIO_MODE_PER_REG 5
 #define GPIO_MODE_BITS        3
+#define GPIO_MODE_PREFIX "GPIO"
 
 static const char * const mtk_gpio_functions[] = {
 	"func0", "func1", "func2", "func3",
 	"func4", "func5", "func6", "func7",
+	"func8", "func9", "func10", "func11",
+	"func12", "func13", "func14", "func15",
 };
 
 /*
@@ -81,6 +84,9 @@ static int mtk_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
 	reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;
 	bit = BIT(offset & 0xf);
 
+	if (pctl->devdata->spec_dir_set)
+		pctl->devdata->spec_dir_set(&reg_addr, offset);
+
 	if (input)
 		/* Different SoC has different alignment offset. */
 		reg_addr = CLR_ADDR(reg_addr, pctl);
@@ -677,9 +683,14 @@ static int mtk_pmx_set_mode(struct pinctrl_dev *pctldev,
 	unsigned int mask = (1L << GPIO_MODE_BITS) - 1;
 	struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
 
+	if (pctl->devdata->spec_pinmux_set)
+		pctl->devdata->spec_pinmux_set(mtk_get_regmap(pctl, pin),
+					pin, mode);
+
 	reg_addr = ((pin / MAX_GPIO_MODE_PER_REG) << pctl->devdata->port_shf)
 			+ pctl->devdata->pinmux_offset;
 
+	mode &= mask;
 	bit = pin % MAX_GPIO_MODE_PER_REG;
 	mask <<= (GPIO_MODE_BITS * bit);
 	val = (mode << (GPIO_MODE_BITS * bit));
@@ -725,12 +736,48 @@ static int mtk_pmx_set_mux(struct pinctrl_dev *pctldev,
 	return 0;
 }
 
+static int mtk_pmx_find_gpio_mode(struct mtk_pinctrl *pctl,
+				unsigned offset)
+{
+	const struct mtk_desc_pin *pin = pctl->devdata->pins + offset;
+	const struct mtk_desc_function *func = pin->functions;
+
+	while (func && func->name) {
+		if (!strncmp(func->name, GPIO_MODE_PREFIX,
+			sizeof(GPIO_MODE_PREFIX)-1))
+			return func->muxval;
+		func++;
+	}
+	return -EINVAL;
+}
+
+static int mtk_pmx_gpio_request_enable(struct pinctrl_dev *pctldev,
+				    struct pinctrl_gpio_range *range,
+				    unsigned offset)
+{
+	int muxval;
+	struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+
+	muxval = mtk_pmx_find_gpio_mode(pctl, offset);
+
+	if (muxval < 0) {
+		dev_err(pctl->dev, "invalid gpio pin %d.\n", offset);
+		return -EINVAL;
+	}
+
+	mtk_pmx_set_mode(pctldev, offset, muxval);
+	mtk_pconf_set_ies_smt(pctl, offset, 1, PIN_CONFIG_INPUT_ENABLE);
+
+	return 0;
+}
+
 static const struct pinmux_ops mtk_pmx_ops = {
 	.get_functions_count	= mtk_pmx_get_funcs_cnt,
 	.get_function_name	= mtk_pmx_get_func_name,
 	.get_function_groups	= mtk_pmx_get_func_groups,
 	.set_mux		= mtk_pmx_set_mux,
 	.gpio_set_direction	= mtk_pmx_gpio_set_direction,
+	.gpio_request_enable	= mtk_pmx_gpio_request_enable,
 };
 
 static int mtk_gpio_direction_input(struct gpio_chip *chip,
@@ -756,6 +803,10 @@ static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 
 	reg_addr =  mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;
 	bit = BIT(offset & 0xf);
+
+	if (pctl->devdata->spec_dir_set)
+		pctl->devdata->spec_dir_set(&reg_addr, offset);
+
 	regmap_read(pctl->regmap1, reg_addr, &read_val);
 	return !(read_val & bit);
 }
@@ -814,6 +865,10 @@ static int mtk_pinctrl_irq_request_resources(struct irq_data *d)
 
 	/* set mux to INT mode */
 	mtk_pmx_set_mode(pctl->pctl_dev, pin->pin.number, pin->eint.eintmux);
+	/* set gpio direction to input */
+	mtk_pmx_gpio_set_direction(pctl->pctl_dev, NULL, pin->pin.number, true);
+	/* set input-enable */
+	mtk_pconf_set_ies_smt(pctl, pin->pin.number, 1, PIN_CONFIG_INPUT_ENABLE);
 
 	return 0;
 }