1 files changed, 331 insertions, 12 deletions

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 9dd981ddbb17..e831647c56a6 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -143,6 +143,7 @@ struct rockchip_drv {
  * @gpio_chip: gpiolib chip
  * @grange: gpio range
  * @slock: spinlock for the gpio bank
+ * @route_mask: bits describing the routing pins of per bank
  */
 struct rockchip_pin_bank {
 	void __iomem			*reg_base;
@@ -165,6 +166,7 @@ struct rockchip_pin_bank {
 	struct pinctrl_gpio_range	grange;
 	raw_spinlock_t			slock;
 	u32				toggle_edge_mode;
+	u32				route_mask;
 };
 
 #define PIN_BANK(id, pins, label)			\
@@ -288,6 +290,22 @@ struct rockchip_pin_bank {
 	}
 
 /**
+ * struct rockchip_mux_recalced_data: represent a pin iomux data.
+ * @bank_num: bank number.
+ * @pin: index at register or used to calc index.
+ * @func: the min pin.
+ * @route_offset: the max pin.
+ * @route_val: the register offset.
+ */
+struct rockchip_mux_route_data {
+	u8 bank_num;
+	u8 pin;
+	u8 func;
+	u32 route_offset;
+	u32 route_val;
+};
+
+/**
  */
 struct rockchip_pin_ctrl {
 	struct rockchip_pin_bank	*pin_banks;
@@ -299,6 +317,8 @@ struct rockchip_pin_ctrl {
 	int				pmu_mux_offset;
 	int				grf_drv_offset;
 	int				pmu_drv_offset;
+	struct rockchip_mux_route_data *iomux_routes;
+	u32				niomux_routes;
 
 	void	(*pull_calc_reg)(struct rockchip_pin_bank *bank,
 				    int pin_num, struct regmap **regmap,
@@ -580,6 +600,280 @@ static void rk3328_recalc_mux(u8 bank_num, int pin, int *reg,
 	*bit = data->bit;
 }
 
+static struct rockchip_mux_route_data rk3228_mux_route_data[] = {
+	{
+		/* pwm0-0 */
+		.bank_num = 0,
+		.pin = 26,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16),
+	}, {
+		/* pwm0-1 */
+		.bank_num = 3,
+		.pin = 21,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16) | BIT(0),
+	}, {
+		/* pwm1-0 */
+		.bank_num = 0,
+		.pin = 27,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 1),
+	}, {
+		/* pwm1-1 */
+		.bank_num = 0,
+		.pin = 30,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 1) | BIT(1),
+	}, {
+		/* pwm2-0 */
+		.bank_num = 0,
+		.pin = 28,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 2),
+	}, {
+		/* pwm2-1 */
+		.bank_num = 1,
+		.pin = 12,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 2) | BIT(2),
+	}, {
+		/* pwm3-0 */
+		.bank_num = 3,
+		.pin = 26,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 3),
+	}, {
+		/* pwm3-1 */
+		.bank_num = 1,
+		.pin = 11,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 3) | BIT(3),
+	}, {
+		/* sdio-0_d0 */
+		.bank_num = 1,
+		.pin = 1,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 4),
+	}, {
+		/* sdio-1_d0 */
+		.bank_num = 3,
+		.pin = 2,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 4) | BIT(4),
+	}, {
+		/* spi-0_rx */
+		.bank_num = 0,
+		.pin = 13,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 5),
+	}, {
+		/* spi-1_rx */
+		.bank_num = 2,
+		.pin = 0,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 5) | BIT(5),
+	}, {
+		/* emmc-0_cmd */
+		.bank_num = 1,
+		.pin = 22,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 7),
+	}, {
+		/* emmc-1_cmd */
+		.bank_num = 2,
+		.pin = 4,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 7) | BIT(7),
+	}, {
+		/* uart2-0_rx */
+		.bank_num = 1,
+		.pin = 19,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 8),
+	}, {
+		/* uart2-1_rx */
+		.bank_num = 1,
+		.pin = 10,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 8) | BIT(8),
+	}, {
+		/* uart1-0_rx */
+		.bank_num = 1,
+		.pin = 10,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 11),
+	}, {
+		/* uart1-1_rx */
+		.bank_num = 3,
+		.pin = 13,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 11) | BIT(11),
+	},
+};
+
+static struct rockchip_mux_route_data rk3328_mux_route_data[] = {
+	{
+		/* uart2dbg_rxm0 */
+		.bank_num = 1,
+		.pin = 1,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16) | BIT(16 + 1),
+	}, {
+		/* uart2dbg_rxm1 */
+		.bank_num = 2,
+		.pin = 1,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16) | BIT(16 + 1) | BIT(0),
+	}, {
+		/* gmac-m1-optimized_rxd0 */
+		.bank_num = 1,
+		.pin = 11,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 2) | BIT(16 + 10) | BIT(2) | BIT(10),
+	}, {
+		/* pdm_sdi0m0 */
+		.bank_num = 2,
+		.pin = 19,
+		.func = 2,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 3),
+	}, {
+		/* pdm_sdi0m1 */
+		.bank_num = 1,
+		.pin = 23,
+		.func = 3,
+		.route_offset = 0x50,
+		.route_val =  BIT(16 + 3) | BIT(3),
+	}, {
+		/* spi_rxdm2 */
+		.bank_num = 3,
+		.pin = 2,
+		.func = 4,
+		.route_offset = 0x50,
+		.route_val =  BIT(16 + 4) | BIT(16 + 5) | BIT(5),
+	}, {
+		/* i2s2_sdim0 */
+		.bank_num = 1,
+		.pin = 24,
+		.func = 1,
+		.route_offset = 0x50,
+		.route_val = BIT(16 + 6),
+	}, {
+		/* i2s2_sdim1 */
+		.bank_num = 3,
+		.pin = 2,
+		.func = 6,
+		.route_offset = 0x50,
+		.route_val =  BIT(16 + 6) | BIT(6),
+	}, {
+		/* card_iom1 */
+		.bank_num = 2,
+		.pin = 22,
+		.func = 3,
+		.route_offset = 0x50,
+		.route_val =  BIT(16 + 7) | BIT(7),
+	}, {
+		/* tsp_d5m1 */
+		.bank_num = 2,
+		.pin = 16,
+		.func = 3,
+		.route_offset = 0x50,
+		.route_val =  BIT(16 + 8) | BIT(8),
+	}, {
+		/* cif_data5m1 */
+		.bank_num = 2,
+		.pin = 16,
+		.func = 4,
+		.route_offset = 0x50,
+		.route_val =  BIT(16 + 9) | BIT(9),
+	},
+};
+
+static struct rockchip_mux_route_data rk3399_mux_route_data[] = {
+	{
+		/* uart2dbga_rx */
+		.bank_num = 4,
+		.pin = 8,
+		.func = 2,
+		.route_offset = 0xe21c,
+		.route_val = BIT(16 + 10) | BIT(16 + 11),
+	}, {
+		/* uart2dbgb_rx */
+		.bank_num = 4,
+		.pin = 16,
+		.func = 2,
+		.route_offset = 0xe21c,
+		.route_val = BIT(16 + 10) | BIT(16 + 11) | BIT(10),
+	}, {
+		/* uart2dbgc_rx */
+		.bank_num = 4,
+		.pin = 19,
+		.func = 1,
+		.route_offset = 0xe21c,
+		.route_val = BIT(16 + 10) | BIT(16 + 11) | BIT(11),
+	}, {
+		/* pcie_clkreqn */
+		.bank_num = 2,
+		.pin = 26,
+		.func = 2,
+		.route_offset = 0xe21c,
+		.route_val = BIT(16 + 14),
+	}, {
+		/* pcie_clkreqnb */
+		.bank_num = 4,
+		.pin = 24,
+		.func = 1,
+		.route_offset = 0xe21c,
+		.route_val = BIT(16 + 14) | BIT(14),
+	},
+};
+
+static bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin,
+				   int mux, u32 *reg, u32 *value)
+{
+	struct rockchip_pinctrl *info = bank->drvdata;
+	struct rockchip_pin_ctrl *ctrl = info->ctrl;
+	struct rockchip_mux_route_data *data;
+	int i;
+
+	for (i = 0; i < ctrl->niomux_routes; i++) {
+		data = &ctrl->iomux_routes[i];
+		if ((data->bank_num == bank->bank_num) &&
+		    (data->pin == pin) && (data->func == mux))
+			break;
+	}
+
+	if (i >= ctrl->niomux_routes)
+		return false;
+
+	*reg = data->route_offset;
+	*value = data->route_val;
+
+	return true;
+}
+
 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
 {
 	struct rockchip_pinctrl *info = bank->drvdata;
@@ -678,7 +972,7 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 	struct regmap *regmap;
 	int reg, ret, mask, mux_type;
 	u8 bit;
-	u32 data, rmask;
+	u32 data, rmask, route_reg, route_val;
 
 	ret = rockchip_verify_mux(bank, pin, mux);
 	if (ret < 0)
@@ -714,6 +1008,15 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
 		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
 
+	if (bank->route_mask & BIT(pin)) {
+		if (rockchip_get_mux_route(bank, pin, mux, &route_reg,
+					   &route_val)) {
+			ret = regmap_write(regmap, route_reg, route_val);
+			if (ret)
+				return ret;
+		}
+	}
+
 	data = (mask << (bit + 16));
 	rmask = data | (data >> 16);
 	data |= (mux & mask) << bit;
@@ -2549,6 +2852,16 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
 
 			bank_pins += 8;
 		}
+
+		/* calculate the per-bank route_mask */
+		for (j = 0; j < ctrl->niomux_routes; j++) {
+			int pin = 0;
+
+			if (ctrl->iomux_routes[j].bank_num == bank->bank_num) {
+				pin = ctrl->iomux_routes[j].pin;
+				bank->route_mask |= BIT(pin);
+			}
+		}
 	}
 
 	return ctrl;
@@ -2799,6 +3112,8 @@ static struct rockchip_pin_ctrl rk3228_pin_ctrl = {
 		.label			= "RK3228-GPIO",
 		.type			= RK3288,
 		.grf_mux_offset		= 0x0,
+		.iomux_routes		= rk3228_mux_route_data,
+		.niomux_routes		= ARRAY_SIZE(rk3228_mux_route_data),
 		.pull_calc_reg		= rk3228_calc_pull_reg_and_bit,
 		.drv_calc_reg		= rk3228_calc_drv_reg_and_bit,
 };
@@ -2866,6 +3181,8 @@ static struct rockchip_pin_ctrl rk3328_pin_ctrl = {
 		.label			= "RK3328-GPIO",
 		.type			= RK3288,
 		.grf_mux_offset		= 0x0,
+		.iomux_routes		= rk3328_mux_route_data,
+		.niomux_routes		= ARRAY_SIZE(rk3328_mux_route_data),
 		.pull_calc_reg		= rk3228_calc_pull_reg_and_bit,
 		.drv_calc_reg		= rk3228_calc_drv_reg_and_bit,
 		.iomux_recalc		= rk3328_recalc_mux,
@@ -2956,33 +3273,35 @@ static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
 		.pmu_mux_offset		= 0x0,
 		.grf_drv_offset		= 0xe100,
 		.pmu_drv_offset		= 0x80,
+		.iomux_routes		= rk3399_mux_route_data,
+		.niomux_routes		= ARRAY_SIZE(rk3399_mux_route_data),
 		.pull_calc_reg		= rk3399_calc_pull_reg_and_bit,
 		.drv_calc_reg		= rk3399_calc_drv_reg_and_bit,
 };
 
 static const struct of_device_id rockchip_pinctrl_dt_match[] = {
 	{ .compatible = "rockchip,rv1108-pinctrl",
-		.data = (void *)&rv1108_pin_ctrl },
+		.data = &rv1108_pin_ctrl },
 	{ .compatible = "rockchip,rk2928-pinctrl",
-		.data = (void *)&rk2928_pin_ctrl },
+		.data = &rk2928_pin_ctrl },
 	{ .compatible = "rockchip,rk3036-pinctrl",
-		.data = (void *)&rk3036_pin_ctrl },
+		.data = &rk3036_pin_ctrl },
 	{ .compatible = "rockchip,rk3066a-pinctrl",
-		.data = (void *)&rk3066a_pin_ctrl },
+		.data = &rk3066a_pin_ctrl },
 	{ .compatible = "rockchip,rk3066b-pinctrl",
-		.data = (void *)&rk3066b_pin_ctrl },
+		.data = &rk3066b_pin_ctrl },
 	{ .compatible = "rockchip,rk3188-pinctrl",
-		.data = (void *)&rk3188_pin_ctrl },
+		.data = &rk3188_pin_ctrl },
 	{ .compatible = "rockchip,rk3228-pinctrl",
-		.data = (void *)&rk3228_pin_ctrl },
+		.data = &rk3228_pin_ctrl },
 	{ .compatible = "rockchip,rk3288-pinctrl",
-		.data = (void *)&rk3288_pin_ctrl },
+		.data = &rk3288_pin_ctrl },
 	{ .compatible = "rockchip,rk3328-pinctrl",
-		.data = (void *)&rk3328_pin_ctrl },
+		.data = &rk3328_pin_ctrl },
 	{ .compatible = "rockchip,rk3368-pinctrl",
-		.data = (void *)&rk3368_pin_ctrl },
+		.data = &rk3368_pin_ctrl },
 	{ .compatible = "rockchip,rk3399-pinctrl",
-		.data = (void *)&rk3399_pin_ctrl },
+		.data = &rk3399_pin_ctrl },
 	{},
 };