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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
commitd635711daa98be86d4c7fd01499c34f566b54ccb (patch)
treeaa5cc3760a27c3d57146498cb82fa549547de06c /drivers/pinctrl/mediatek/pinctrl-mtk-common.c
parentc91265cd0efb83778f015b4d4b1129bd2cfd075e (diff)
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/pinctrl/mediatek/pinctrl-mtk-common.c')
-rw-r--r--drivers/pinctrl/mediatek/pinctrl-mtk-common.c55
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;
}