pinctrl: rockchip: Use common interface for recalced iomux

The other Socs also need the feature of recalced iomux, so
make it as a common interface like iomux route feature.
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

@@ -76,7 +76,6 @@ enum rockchip_pinctrl_type {
 #define IOMUX_SOURCE_PMU	BIT(2)
 #define IOMUX_UNROUTED		BIT(3)
 #define IOMUX_WIDTH_3BIT	BIT(4)
-#define IOMUX_RECALCED		BIT(5)
 
 /**
  * @type: iomux variant using IOMUX_* constants
@@ -166,6 +165,7 @@ struct rockchip_pin_bank {
 	struct pinctrl_gpio_range	grange;
 	raw_spinlock_t			slock;
 	u32				toggle_edge_mode;
+	u32				recalced_mask;
 	u32				route_mask;
 };
 
@@ -289,6 +289,22 @@ struct rockchip_pin_bank {
 		.pull_type[3] = pull3,					\
 	}
 
+/**
+ * struct rockchip_mux_recalced_data: represent a pin iomux data.
+ * @num: bank number.
+ * @pin: pin number.
+ * @bit: index at register.
+ * @reg: register offset.
+ * @mask: mask bit
+ */
+struct rockchip_mux_recalced_data {
+	u8 num;
+	u8 pin;
+	u8 reg;
+	u8 bit;
+	u8 mask;
+};
+
 /**
  * struct rockchip_mux_recalced_data: represent a pin iomux data.
  * @bank_num: bank number.
@@ -317,6 +333,8 @@ struct rockchip_pin_ctrl {
 	int				pmu_mux_offset;
 	int				grf_drv_offset;
 	int				pmu_drv_offset;
+	struct rockchip_mux_recalced_data *iomux_recalced;
+	u32				niomux_recalced;
 	struct rockchip_mux_route_data *iomux_routes;
 	u32				niomux_routes;
 
@@ -326,8 +344,6 @@ struct rockchip_pin_ctrl {
 	void	(*drv_calc_reg)(struct rockchip_pin_bank *bank,
 				    int pin_num, struct regmap **regmap,
 				    int *reg, u8 *bit);
-	void	(*iomux_recalc)(u8 bank_num, int pin, int *reg,
-				u8 *bit, int *mask);
 	int	(*schmitt_calc_reg)(struct rockchip_pin_bank *bank,
 				    int pin_num, struct regmap **regmap,
 				    int *reg, u8 *bit);
@@ -382,22 +398,6 @@ struct rockchip_pinctrl {
 	unsigned int			nfunctions;
 };
 
-/**
- * struct rockchip_mux_recalced_data: represent a pin iomux data.
- * @num: bank number.
- * @pin: pin number.
- * @bit: index at register.
- * @reg: register offset.
- * @mask: mask bit
- */
-struct rockchip_mux_recalced_data {
-	u8 num;
-	u8 pin;
-	u8 reg;
-	u8 bit;
-	u8 mask;
-};
-
 static struct regmap_config rockchip_regmap_config = {
 	.reg_bits = 32,
 	.val_bits = 32,
@@ -557,7 +557,7 @@ static const struct pinctrl_ops rockchip_pctrl_ops = {
  * Hardware access
  */
 
-static const struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
+static struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
 	{
 		.num = 2,
 		.pin = 12,
@@ -579,20 +579,22 @@ static const struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
 	},
 };
 
-static void rk3328_recalc_mux(u8 bank_num, int pin, int *reg,
-			      u8 *bit, int *mask)
+static void rockchip_get_recalced_mux(struct rockchip_pin_bank *bank, int pin,
+				      int *reg, u8 *bit, int *mask)
 {
-	const struct rockchip_mux_recalced_data *data = NULL;
+	struct rockchip_pinctrl *info = bank->drvdata;
+	struct rockchip_pin_ctrl *ctrl = info->ctrl;
+	struct rockchip_mux_recalced_data *data;
 	int i;
 
-	for (i = 0; i < ARRAY_SIZE(rk3328_mux_recalced_data); i++)
-		if (rk3328_mux_recalced_data[i].num == bank_num &&
-		    rk3328_mux_recalced_data[i].pin == pin) {
-			data = &rk3328_mux_recalced_data[i];
+	for (i = 0; i < ctrl->niomux_recalced; i++) {
+		data = &ctrl->iomux_recalced[i];
+		if (data->num == bank->bank_num &&
+		    data->pin == pin)
 			break;
 	}
 
-	if (!data)
+	if (i >= ctrl->niomux_recalced)
 		return;
 
 	*reg = data->reg;
@@ -877,7 +879,6 @@ static bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin,
 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
 {
 	struct rockchip_pinctrl *info = bank->drvdata;
-	struct rockchip_pin_ctrl *ctrl = info->ctrl;
 	int iomux_num = (pin / 8);
 	struct regmap *regmap;
 	unsigned int val;
@@ -916,8 +917,8 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
 		mask = 0x3;
 	}
 
-	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
-		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
+	if (bank->recalced_mask & BIT(pin))
+		rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
 
 	ret = regmap_read(regmap, reg, &val);
 	if (ret)
@@ -967,7 +968,6 @@ static int rockchip_verify_mux(struct rockchip_pin_bank *bank,
 static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 {
 	struct rockchip_pinctrl *info = bank->drvdata;
-	struct rockchip_pin_ctrl *ctrl = info->ctrl;
 	int iomux_num = (pin / 8);
 	struct regmap *regmap;
 	int reg, ret, mask, mux_type;
@@ -1005,8 +1005,8 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 		mask = 0x3;
 	}
 
-	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
-		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
+	if (bank->recalced_mask & BIT(pin))
+		rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
 
 	if (bank->route_mask & BIT(pin)) {
 		if (rockchip_get_mux_route(bank, pin, mux, &route_reg,
@@ -2853,6 +2853,16 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
 			bank_pins += 8;
 		}
 
+		/* calculate the per-bank recalced_mask */
+		for (j = 0; j < ctrl->niomux_recalced; j++) {
+			int pin = 0;
+
+			if (ctrl->iomux_recalced[j].num == bank->bank_num) {
+				pin = ctrl->iomux_recalced[j].pin;
+				bank->recalced_mask |= BIT(pin);
+			}
+		}
+
 		/* calculate the per-bank route_mask */
 		for (j = 0; j < ctrl->niomux_routes; j++) {
 			int pin = 0;
@@ -3165,12 +3175,12 @@ static struct rockchip_pin_bank rk3328_pin_banks[] = {
 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0),
 	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
 	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0,
-			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
-			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
+			     IOMUX_WIDTH_3BIT,
+			     IOMUX_WIDTH_3BIT,
 			     0),
 	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3",
 			     IOMUX_WIDTH_3BIT,
-			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
+			     IOMUX_WIDTH_3BIT,
 			     0,
 			     0),
 };
@@ -3181,11 +3191,12 @@ static struct rockchip_pin_ctrl rk3328_pin_ctrl = {
 		.label			= "RK3328-GPIO",
 		.type			= RK3288,
 		.grf_mux_offset		= 0x0,
+		.iomux_recalced		= rk3328_mux_recalced_data,
+		.niomux_recalced	= ARRAY_SIZE(rk3328_mux_recalced_data),
 		.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,
 		.schmitt_calc_reg	= rk3328_calc_schmitt_reg_and_bit,
 };