pinctrl: rockchip: add support for the rk3228

The pinctrl of rk3228 is much the same as rk3288's, but
without pmu.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
index 391ef4be8d509006446120fb83e73712e7384628..0cd701b1947fdc35bc8ec036cac82b053f237712 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
@@ -21,7 +21,8 @@ defined as gpio sub-nodes of the pinmux controller.
 Required properties for iomux controller:
   - compatible: one of "rockchip,rk2928-pinctrl", "rockchip,rk3066a-pinctrl"
                       "rockchip,rk3066b-pinctrl", "rockchip,rk3188-pinctrl"
-                      "rockchip,rk3288-pinctrl", "rockchip,rk3368-pinctrl"
+                      "rockchip,rk3228-pinctrl", "rockchip,rk3288-pinctrl"
+                      "rockchip,rk3368-pinctrl"
   - rockchip,grf: phandle referencing a syscon providing the
         "general register files"
 

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index a0651128e23acc68fbe139dc10da3e859da2b9a1..faab36ec6de8eadc0aaa4dcf275b778d8c025098 100644 (file)
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -614,6 +614,40 @@ static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
        }
 }
 
+#define RK3228_PULL_OFFSET             0x100
+
+static void rk3228_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;
+
+       *regmap = info->regmap_base;
+       *reg = RK3228_PULL_OFFSET;
+       *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 RK3228_DRV_GRF_OFFSET          0x200
+
+static void rk3228_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;
+
+       *regmap = info->regmap_base;
+       *reg = RK3228_DRV_GRF_OFFSET;
+       *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;
+}
+
 #define RK3368_PULL_GRF_OFFSET         0x100
 #define RK3368_PULL_PMU_OFFSET         0x10
 
@@ -2143,6 +2177,23 @@ static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
                .pull_calc_reg          = rk3188_calc_pull_reg_and_bit,
 };
 
+static struct rockchip_pin_bank rk3228_pin_banks[] = {
+       PIN_BANK(0, 32, "gpio0"),
+       PIN_BANK(1, 32, "gpio1"),
+       PIN_BANK(2, 32, "gpio2"),
+       PIN_BANK(3, 32, "gpio3"),
+};
+
+static struct rockchip_pin_ctrl rk3228_pin_ctrl = {
+               .pin_banks              = rk3228_pin_banks,
+               .nr_banks               = ARRAY_SIZE(rk3228_pin_banks),
+               .label                  = "RK3228-GPIO",
+               .type                   = RK3288,
+               .grf_mux_offset         = 0x0,
+               .pull_calc_reg          = rk3228_calc_pull_reg_and_bit,
+               .drv_calc_reg           = rk3228_calc_drv_reg_and_bit,
+};
+
 static struct rockchip_pin_bank rk3288_pin_banks[] = {
        PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
                                             IOMUX_SOURCE_PMU,
@@ -2220,6 +2271,8 @@ static const struct of_device_id rockchip_pinctrl_dt_match[] = {
                .data = (void *)&rk3066b_pin_ctrl },
        { .compatible = "rockchip,rk3188-pinctrl",
                .data = (void *)&rk3188_pin_ctrl },
+       { .compatible = "rockchip,rk3228-pinctrl",
+               .data = (void *)&rk3228_pin_ctrl },
        { .compatible = "rockchip,rk3288-pinctrl",
                .data = (void *)&rk3288_pin_ctrl },
        { .compatible = "rockchip,rk3368-pinctrl",