summaryrefslogtreecommitdiff
path: root/drivers/pinctrl/pinctrl-rockchip.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pinctrl/pinctrl-rockchip.c')
-rw-r--r--drivers/pinctrl/pinctrl-rockchip.c192
1 files changed, 139 insertions, 53 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index bf032b9b4c57..a91026e8cd7c 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -99,6 +99,15 @@ enum rockchip_pin_drv_type {
};
/**
+ * enum type index corresponding to rockchip_pull_list arrays index.
+ */
+enum rockchip_pin_pull_type {
+ PULL_TYPE_IO_DEFAULT = 0,
+ PULL_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_MAX
+};
+
+/**
* @drv_type: drive strength variant using rockchip_perpin_drv_type
* @offset: if initialized to -1 it will be autocalculated, by specifying
* an initial offset value the relevant source offset can be reset
@@ -123,6 +132,7 @@ struct rockchip_drv {
* @bank_num: number of the bank, to account for holes
* @iomux: array describing the 4 iomux sources of the bank
* @drv: array describing the 4 drive strength sources of the bank
+ * @pull_type: array describing the 4 pull type sources of the bank
* @valid: are all necessary informations present
* @of_node: dt node of this bank
* @drvdata: common pinctrl basedata
@@ -143,6 +153,7 @@ struct rockchip_pin_bank {
u8 bank_num;
struct rockchip_iomux iomux[4];
struct rockchip_drv drv[4];
+ enum rockchip_pin_pull_type pull_type[4];
bool valid;
struct device_node *of_node;
struct rockchip_pinctrl *drvdata;
@@ -198,6 +209,31 @@ struct rockchip_pin_bank {
}, \
}
+#define PIN_BANK_DRV_FLAGS_PULL_FLAGS(id, pins, label, drv0, drv1, \
+ drv2, drv3, pull0, pull1, \
+ pull2, pull3) \
+ { \
+ .bank_num = id, \
+ .nr_pins = pins, \
+ .name = label, \
+ .iomux = { \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ { .offset = -1 }, \
+ }, \
+ .drv = { \
+ { .drv_type = drv0, .offset = -1 }, \
+ { .drv_type = drv1, .offset = -1 }, \
+ { .drv_type = drv2, .offset = -1 }, \
+ { .drv_type = drv3, .offset = -1 }, \
+ }, \
+ .pull_type[0] = pull0, \
+ .pull_type[1] = pull1, \
+ .pull_type[2] = pull2, \
+ .pull_type[3] = pull3, \
+ }
+
#define PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(id, pins, label, iom0, iom1, \
iom2, iom3, drv0, drv1, drv2, \
drv3, offset0, offset1, \
@@ -220,6 +256,34 @@ struct rockchip_pin_bank {
}, \
}
+#define PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(id, pins, \
+ label, iom0, iom1, iom2, \
+ iom3, drv0, drv1, drv2, \
+ drv3, offset0, offset1, \
+ offset2, offset3, pull0, \
+ pull1, pull2, pull3) \
+ { \
+ .bank_num = id, \
+ .nr_pins = pins, \
+ .name = label, \
+ .iomux = { \
+ { .type = iom0, .offset = -1 }, \
+ { .type = iom1, .offset = -1 }, \
+ { .type = iom2, .offset = -1 }, \
+ { .type = iom3, .offset = -1 }, \
+ }, \
+ .drv = { \
+ { .drv_type = drv0, .offset = offset0 }, \
+ { .drv_type = drv1, .offset = offset1 }, \
+ { .drv_type = drv2, .offset = offset2 }, \
+ { .drv_type = drv3, .offset = offset3 }, \
+ }, \
+ .pull_type[0] = pull0, \
+ .pull_type[1] = pull1, \
+ .pull_type[2] = pull2, \
+ .pull_type[3] = pull3, \
+ }
+
/**
*/
struct rockchip_pin_ctrl {
@@ -1020,12 +1084,27 @@ static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
return ret;
}
+static int rockchip_pull_list[PULL_TYPE_MAX][4] = {
+ {
+ PIN_CONFIG_BIAS_DISABLE,
+ PIN_CONFIG_BIAS_PULL_UP,
+ PIN_CONFIG_BIAS_PULL_DOWN,
+ PIN_CONFIG_BIAS_BUS_HOLD
+ },
+ {
+ PIN_CONFIG_BIAS_DISABLE,
+ PIN_CONFIG_BIAS_PULL_DOWN,
+ PIN_CONFIG_BIAS_DISABLE,
+ PIN_CONFIG_BIAS_PULL_UP
+ },
+};
+
static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
{
struct rockchip_pinctrl *info = bank->drvdata;
struct rockchip_pin_ctrl *ctrl = info->ctrl;
struct regmap *regmap;
- int reg, ret;
+ int reg, ret, pull_type;
u8 bit;
u32 data;
@@ -1048,22 +1127,11 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
case RK3288:
case RK3368:
case RK3399:
+ pull_type = bank->pull_type[pin_num / 8];
data >>= bit;
data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
- switch (data) {
- case 0:
- return PIN_CONFIG_BIAS_DISABLE;
- case 1:
- return PIN_CONFIG_BIAS_PULL_UP;
- case 2:
- return PIN_CONFIG_BIAS_PULL_DOWN;
- case 3:
- return PIN_CONFIG_BIAS_BUS_HOLD;
- }
-
- dev_err(info->dev, "unknown pull setting\n");
- return -EIO;
+ return rockchip_pull_list[pull_type][data];
default:
dev_err(info->dev, "unsupported pinctrl type\n");
return -EINVAL;
@@ -1076,7 +1144,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
struct rockchip_pinctrl *info = bank->drvdata;
struct rockchip_pin_ctrl *ctrl = info->ctrl;
struct regmap *regmap;
- int reg, ret;
+ int reg, ret, i, pull_type;
unsigned long flags;
u8 bit;
u32 data, rmask;
@@ -1105,30 +1173,28 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
case RK3288:
case RK3368:
case RK3399:
+ pull_type = bank->pull_type[pin_num / 8];
+ ret = -EINVAL;
+ for (i = 0; i < ARRAY_SIZE(rockchip_pull_list[pull_type]);
+ i++) {
+ if (rockchip_pull_list[pull_type][i] == pull) {
+ ret = i;
+ break;
+ }
+ }
+
+ if (ret < 0) {
+ dev_err(info->dev, "unsupported pull setting %d\n",
+ pull);
+ return ret;
+ }
+
spin_lock_irqsave(&bank->slock, flags);
/* enable the write to the equivalent lower bits */
data = ((1 << RK3188_PULL_BITS_PER_PIN) - 1) << (bit + 16);
rmask = data | (data >> 16);
-
- switch (pull) {
- case PIN_CONFIG_BIAS_DISABLE:
- break;
- case PIN_CONFIG_BIAS_PULL_UP:
- data |= (1 << bit);
- break;
- case PIN_CONFIG_BIAS_PULL_DOWN:
- data |= (2 << bit);
- break;
- case PIN_CONFIG_BIAS_BUS_HOLD:
- data |= (3 << bit);
- break;
- default:
- spin_unlock_irqrestore(&bank->slock, flags);
- dev_err(info->dev, "unsupported pull setting %d\n",
- pull);
- return -EINVAL;
- }
+ data |= (ret << bit);
ret = regmap_update_bits(regmap, reg, rmask, data);
@@ -1208,6 +1274,16 @@ static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
return 0;
}
+static int rockchip_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+ struct rockchip_pin_bank *bank = gpiochip_get_data(chip);
+ u32 data;
+
+ data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
+
+ return !(data & BIT(offset));
+}
+
/*
* The calls to gpio_direction_output() and gpio_direction_input()
* leads to this function call (via the pinctrl_gpio_direction_{input|output}()
@@ -1636,7 +1712,7 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
if (ret)
return ret;
- info->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, info);
+ info->pctl_dev = devm_pinctrl_register(&pdev->dev, ctrldesc, info);
if (IS_ERR(info->pctl_dev)) {
dev_err(&pdev->dev, "could not register pinctrl driver\n");
return PTR_ERR(info->pctl_dev);
@@ -1741,6 +1817,7 @@ static const struct gpio_chip rockchip_gpiolib_chip = {
.free = gpiochip_generic_free,
.set = rockchip_gpio_set,
.get = rockchip_gpio_get,
+ .get_direction = rockchip_gpio_get_direction,
.direction_input = rockchip_gpio_direction_input,
.direction_output = rockchip_gpio_direction_output,
.to_irq = rockchip_gpio_to_irq,
@@ -2541,19 +2618,24 @@ static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
};
static struct rockchip_pin_bank rk3399_pin_banks[] = {
- PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(0, 32, "gpio0", IOMUX_SOURCE_PMU,
- IOMUX_SOURCE_PMU,
- IOMUX_SOURCE_PMU,
- IOMUX_SOURCE_PMU,
- DRV_TYPE_IO_1V8_ONLY,
- DRV_TYPE_IO_1V8_ONLY,
- DRV_TYPE_IO_DEFAULT,
- DRV_TYPE_IO_DEFAULT,
- 0x0,
- 0x8,
- -1,
- -1
- ),
+ PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(0, 32, "gpio0",
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ DRV_TYPE_IO_1V8_ONLY,
+ DRV_TYPE_IO_1V8_ONLY,
+ DRV_TYPE_IO_DEFAULT,
+ DRV_TYPE_IO_DEFAULT,
+ 0x0,
+ 0x8,
+ -1,
+ -1,
+ PULL_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_IO_DEFAULT,
+ PULL_TYPE_IO_DEFAULT
+ ),
PIN_BANK_IOMUX_DRV_FLAGS_OFFSET(1, 32, "gpio1", IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU,
@@ -2567,11 +2649,15 @@ static struct rockchip_pin_bank rk3399_pin_banks[] = {
0x30,
0x38
),
- PIN_BANK_DRV_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
- DRV_TYPE_IO_1V8_OR_3V0,
- DRV_TYPE_IO_1V8_ONLY,
- DRV_TYPE_IO_1V8_ONLY
- ),
+ PIN_BANK_DRV_FLAGS_PULL_FLAGS(2, 32, "gpio2", DRV_TYPE_IO_1V8_OR_3V0,
+ DRV_TYPE_IO_1V8_OR_3V0,
+ DRV_TYPE_IO_1V8_ONLY,
+ DRV_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_IO_DEFAULT,
+ PULL_TYPE_IO_DEFAULT,
+ PULL_TYPE_IO_1V8_ONLY,
+ PULL_TYPE_IO_1V8_ONLY
+ ),
PIN_BANK_DRV_FLAGS(3, 32, "gpio3", DRV_TYPE_IO_3V3_ONLY,
DRV_TYPE_IO_3V3_ONLY,
DRV_TYPE_IO_3V3_ONLY,
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-29 13:00:29 +0300