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path: root/drivers/pinctrl/pinctrl-rockchip.c
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Diffstat (limited to 'drivers/pinctrl/pinctrl-rockchip.c')
-rw-r--r--drivers/pinctrl/pinctrl-rockchip.c131
1 files changed, 116 insertions, 15 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index dee7d5f06c60..9affcd725776 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -63,6 +63,7 @@ enum rockchip_pinctrl_type {
RK3066B,
RK3188,
RK3288,
+ RK3368,
};
/**
@@ -163,6 +164,9 @@ struct rockchip_pin_ctrl {
void (*pull_calc_reg)(struct rockchip_pin_bank *bank,
int pin_num, struct regmap **regmap,
int *reg, u8 *bit);
+ void (*drv_calc_reg)(struct rockchip_pin_bank *bank,
+ int pin_num, struct regmap **regmap,
+ int *reg, u8 *bit);
};
struct rockchip_pin_config {
@@ -581,7 +585,6 @@ static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
#define RK3288_DRV_BITS_PER_PIN 2
#define RK3288_DRV_PINS_PER_REG 8
#define RK3288_DRV_BANK_STRIDE 16
-static int rk3288_drv_list[] = { 2, 4, 8, 12 };
static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
int pin_num, struct regmap **regmap,
@@ -611,14 +614,81 @@ static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
}
}
-static int rk3288_get_drive(struct rockchip_pin_bank *bank, int pin_num)
+#define RK3368_PULL_GRF_OFFSET 0x100
+#define RK3368_PULL_PMU_OFFSET 0x10
+
+static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
+ int pin_num, struct regmap **regmap,
+ int *reg, u8 *bit)
{
+ struct rockchip_pinctrl *info = bank->drvdata;
+
+ /* The first 32 pins of the first bank are located in PMU */
+ if (bank->bank_num == 0) {
+ *regmap = info->regmap_pmu;
+ *reg = RK3368_PULL_PMU_OFFSET;
+
+ *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
+ *bit = pin_num % RK3188_PULL_PINS_PER_REG;
+ *bit *= RK3188_PULL_BITS_PER_PIN;
+ } else {
+ *regmap = info->regmap_base;
+ *reg = RK3368_PULL_GRF_OFFSET;
+
+ /* correct the offset, as we're starting with the 2nd bank */
+ *reg -= 0x10;
+ *reg += bank->bank_num * RK3188_PULL_BANK_STRIDE;
+ *reg += ((pin_num / RK3188_PULL_PINS_PER_REG) * 4);
+
+ *bit = (pin_num % RK3188_PULL_PINS_PER_REG);
+ *bit *= RK3188_PULL_BITS_PER_PIN;
+ }
+}
+
+#define RK3368_DRV_PMU_OFFSET 0x20
+#define RK3368_DRV_GRF_OFFSET 0x200
+
+static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
+ int pin_num, struct regmap **regmap,
+ int *reg, u8 *bit)
+{
+ struct rockchip_pinctrl *info = bank->drvdata;
+
+ /* The first 32 pins of the first bank are located in PMU */
+ if (bank->bank_num == 0) {
+ *regmap = info->regmap_pmu;
+ *reg = RK3368_DRV_PMU_OFFSET;
+
+ *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
+ *bit = pin_num % RK3288_DRV_PINS_PER_REG;
+ *bit *= RK3288_DRV_BITS_PER_PIN;
+ } else {
+ *regmap = info->regmap_base;
+ *reg = RK3368_DRV_GRF_OFFSET;
+
+ /* correct the offset, as we're starting with the 2nd bank */
+ *reg -= 0x10;
+ *reg += bank->bank_num * RK3288_DRV_BANK_STRIDE;
+ *reg += ((pin_num / RK3288_DRV_PINS_PER_REG) * 4);
+
+ *bit = (pin_num % RK3288_DRV_PINS_PER_REG);
+ *bit *= RK3288_DRV_BITS_PER_PIN;
+ }
+}
+
+static int rockchip_perpin_drv_list[] = { 2, 4, 8, 12 };
+
+static int rockchip_get_drive_perpin(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;
u32 data;
u8 bit;
- rk3288_calc_drv_reg_and_bit(bank, pin_num, &regmap, &reg, &bit);
+ ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
ret = regmap_read(regmap, reg, &data);
if (ret)
@@ -627,24 +697,25 @@ static int rk3288_get_drive(struct rockchip_pin_bank *bank, int pin_num)
data >>= bit;
data &= (1 << RK3288_DRV_BITS_PER_PIN) - 1;
- return rk3288_drv_list[data];
+ return rockchip_perpin_drv_list[data];
}
-static int rk3288_set_drive(struct rockchip_pin_bank *bank, int pin_num,
- int strength)
+static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
+ int pin_num, int strength)
{
struct rockchip_pinctrl *info = bank->drvdata;
+ struct rockchip_pin_ctrl *ctrl = info->ctrl;
struct regmap *regmap;
unsigned long flags;
int reg, ret, i;
u32 data, rmask;
u8 bit;
- rk3288_calc_drv_reg_and_bit(bank, pin_num, &regmap, &reg, &bit);
+ ctrl->drv_calc_reg(bank, pin_num, &regmap, &reg, &bit);
ret = -EINVAL;
- for (i = 0; i < ARRAY_SIZE(rk3288_drv_list); i++) {
- if (rk3288_drv_list[i] == strength) {
+ for (i = 0; i < ARRAY_SIZE(rockchip_perpin_drv_list); i++) {
+ if (rockchip_perpin_drv_list[i] == strength) {
ret = i;
break;
}
@@ -695,6 +766,7 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
: PIN_CONFIG_BIAS_DISABLE;
case RK3188:
case RK3288:
+ case RK3368:
data >>= bit;
data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
@@ -750,6 +822,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
break;
case RK3188:
case RK3288:
+ case RK3368:
spin_lock_irqsave(&bank->slock, flags);
/* enable the write to the equivalent lower bits */
@@ -927,6 +1000,7 @@ static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
return pull ? false : true;
case RK3188:
case RK3288:
+ case RK3368:
return (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT);
}
@@ -983,10 +1057,11 @@ static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
break;
case PIN_CONFIG_DRIVE_STRENGTH:
/* rk3288 is the first with per-pin drive-strength */
- if (info->ctrl->type != RK3288)
+ if (!info->ctrl->drv_calc_reg)
return -ENOTSUPP;
- rc = rk3288_set_drive(bank, pin - bank->pin_base, arg);
+ rc = rockchip_set_drive_perpin(bank,
+ pin - bank->pin_base, arg);
if (rc < 0)
return rc;
break;
@@ -1041,10 +1116,10 @@ static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
break;
case PIN_CONFIG_DRIVE_STRENGTH:
/* rk3288 is the first with per-pin drive-strength */
- if (info->ctrl->type != RK3288)
+ if (!info->ctrl->drv_calc_reg)
return -ENOTSUPP;
- rc = rk3288_get_drive(bank, pin - bank->pin_base);
+ rc = rockchip_get_drive_perpin(bank, pin - bank->pin_base);
if (rc < 0)
return rc;
@@ -1274,9 +1349,9 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
return ret;
info->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, info);
- if (!info->pctl_dev) {
+ if (IS_ERR(info->pctl_dev)) {
dev_err(&pdev->dev, "could not register pinctrl driver\n");
- return -EINVAL;
+ return PTR_ERR(info->pctl_dev);
}
for (bank = 0; bank < info->ctrl->nr_banks; ++bank) {
@@ -2056,8 +2131,32 @@ static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
.grf_mux_offset = 0x0,
.pmu_mux_offset = 0x84,
.pull_calc_reg = rk3288_calc_pull_reg_and_bit,
+ .drv_calc_reg = rk3288_calc_drv_reg_and_bit,
};
+static struct rockchip_pin_bank rk3368_pin_banks[] = {
+ PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU
+ ),
+ PIN_BANK(1, 32, "gpio1"),
+ PIN_BANK(2, 32, "gpio2"),
+ PIN_BANK(3, 32, "gpio3"),
+};
+
+static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
+ .pin_banks = rk3368_pin_banks,
+ .nr_banks = ARRAY_SIZE(rk3368_pin_banks),
+ .label = "RK3368-GPIO",
+ .type = RK3368,
+ .grf_mux_offset = 0x0,
+ .pmu_mux_offset = 0x0,
+ .pull_calc_reg = rk3368_calc_pull_reg_and_bit,
+ .drv_calc_reg = rk3368_calc_drv_reg_and_bit,
+};
+
+
static const struct of_device_id rockchip_pinctrl_dt_match[] = {
{ .compatible = "rockchip,rk2928-pinctrl",
.data = (void *)&rk2928_pin_ctrl },
@@ -2069,6 +2168,8 @@ static const struct of_device_id rockchip_pinctrl_dt_match[] = {
.data = (void *)&rk3188_pin_ctrl },
{ .compatible = "rockchip,rk3288-pinctrl",
.data = (void *)&rk3288_pin_ctrl },
+ { .compatible = "rockchip,rk3368-pinctrl",
+ .data = (void *)&rk3368_pin_ctrl },
{},
};
MODULE_DEVICE_TABLE(of, rockchip_pinctrl_dt_match);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.