pinctrl: rockchip: Add iomux-route switching support for rk3228

There are 9 IP blocks pin routes need to be switched, that are
pwm-0, pwm-1, pwm-2, pwm-3, sdio, spi, emmc, uart2, uart1.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-rockchip.c

@@ -605,6 +605,136 @@ 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 bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin,
 				   int mux, u32 *reg, u32 *value)
 {
@@ -2898,6 +3028,8 @@ 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,
 };