pinctrl: rockchip: add support for rk1108

This add pinctrl support for Rockchip RK1108 Soc.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>

Series-changes: 2
- add pull and drive-strength functionality

Series-changes: 3
- two minor CodingStyle fixes adviced by Heiko
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Yan 2016-11-15 18:02:43 +08:00 коммит произвёл Linus Walleij
Родитель 3b8d0fb9b8
Коммит 688daf234f
1 изменённых файлов: 86 добавлений и 0 удалений

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@ -59,6 +59,7 @@
#define GPIO_LS_SYNC 0x60
enum rockchip_pinctrl_type {
RK1108,
RK2928,
RK3066B,
RK3188,
@ -624,6 +625,65 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
return ret;
}
#define RK1108_PULL_PMU_OFFSET 0x10
#define RK1108_PULL_OFFSET 0x110
#define RK1108_PULL_PINS_PER_REG 8
#define RK1108_PULL_BITS_PER_PIN 2
#define RK1108_PULL_BANK_STRIDE 16
static void rk1108_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 24 pins of the first bank are located in PMU */
if (bank->bank_num == 0) {
*regmap = info->regmap_pmu;
*reg = RK1108_PULL_PMU_OFFSET;
} else {
*reg = RK1108_PULL_OFFSET;
*regmap = info->regmap_base;
/* correct the offset, as we're starting with the 2nd bank */
*reg -= 0x10;
*reg += bank->bank_num * RK1108_PULL_BANK_STRIDE;
}
*reg += ((pin_num / RK1108_PULL_PINS_PER_REG) * 4);
*bit = (pin_num % RK1108_PULL_PINS_PER_REG);
*bit *= RK1108_PULL_BITS_PER_PIN;
}
#define RK1108_DRV_PMU_OFFSET 0x20
#define RK1108_DRV_GRF_OFFSET 0x210
#define RK1108_DRV_BITS_PER_PIN 2
#define RK1108_DRV_PINS_PER_REG 8
#define RK1108_DRV_BANK_STRIDE 16
static void rk1108_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 24 pins of the first bank are located in PMU */
if (bank->bank_num == 0) {
*regmap = info->regmap_pmu;
*reg = RK1108_DRV_PMU_OFFSET;
} else {
*regmap = info->regmap_base;
*reg = RK1108_DRV_GRF_OFFSET;
/* correct the offset, as we're starting with the 2nd bank */
*reg -= 0x10;
*reg += bank->bank_num * RK1108_DRV_BANK_STRIDE;
}
*reg += ((pin_num / RK1108_DRV_PINS_PER_REG) * 4);
*bit = pin_num % RK1108_DRV_PINS_PER_REG;
*bit *= RK1108_DRV_BITS_PER_PIN;
}
#define RK2928_PULL_OFFSET 0x118
#define RK2928_PULL_PINS_PER_REG 16
#define RK2928_PULL_BANK_STRIDE 8
@ -1123,6 +1183,7 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
return !(data & BIT(bit))
? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
: PIN_CONFIG_BIAS_DISABLE;
case RK1108:
case RK3188:
case RK3288:
case RK3368:
@ -1169,6 +1230,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
spin_unlock_irqrestore(&bank->slock, flags);
break;
case RK1108:
case RK3188:
case RK3288:
case RK3368:
@ -1358,6 +1420,7 @@ static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
pull == PIN_CONFIG_BIAS_DISABLE);
case RK3066B:
return pull ? false : true;
case RK1108:
case RK3188:
case RK3288:
case RK3368:
@ -2455,6 +2518,27 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
return 0;
}
static struct rockchip_pin_bank rk1108_pin_banks[] = {
PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU),
PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
};
static struct rockchip_pin_ctrl rk1108_pin_ctrl = {
.pin_banks = rk1108_pin_banks,
.nr_banks = ARRAY_SIZE(rk1108_pin_banks),
.label = "RK1108-GPIO",
.type = RK1108,
.grf_mux_offset = 0x10,
.pmu_mux_offset = 0x0,
.pull_calc_reg = rk1108_calc_pull_reg_and_bit,
.drv_calc_reg = rk1108_calc_drv_reg_and_bit,
};
static struct rockchip_pin_bank rk2928_pin_banks[] = {
PIN_BANK(0, 32, "gpio0"),
PIN_BANK(1, 32, "gpio1"),
@ -2684,6 +2768,8 @@ static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
};
static const struct of_device_id rockchip_pinctrl_dt_match[] = {
{ .compatible = "rockchip,rk1108-pinctrl",
.data = (void *)&rk1108_pin_ctrl },
{ .compatible = "rockchip,rk2928-pinctrl",
.data = (void *)&rk2928_pin_ctrl },
{ .compatible = "rockchip,rk3036-pinctrl",