pinctrl: sh-pfc: Use u32 to store register data

As PFC registers are either 8, 16, or 32 bits wide, use u32 (mostly
replacing unsigned long) to store (parts of) register values and masks.

Switch the shadow register operations from {set,clear}_bit() to plain C
bit operations, as the former can operate on long data only.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/sh-pfc/core.c

@@ -144,8 +144,7 @@ static int sh_pfc_enum_in_range(u16 enum_id, const struct pinmux_range *r)
 	return 1;
 }
 
-unsigned long sh_pfc_read_raw_reg(void __iomem *mapped_reg,
-				  unsigned long reg_width)
+u32 sh_pfc_read_raw_reg(void __iomem *mapped_reg, unsigned long reg_width)
 {
 	switch (reg_width) {
 	case 8:
@@ -161,7 +160,7 @@ unsigned long sh_pfc_read_raw_reg(void __iomem *mapped_reg,
 }
 
 void sh_pfc_write_raw_reg(void __iomem *mapped_reg, unsigned long reg_width,
-			  unsigned long data)
+			  u32 data)
 {
 	switch (reg_width) {
 	case 8:
@@ -181,8 +180,7 @@ void sh_pfc_write_raw_reg(void __iomem *mapped_reg, unsigned long reg_width,
 static void sh_pfc_config_reg_helper(struct sh_pfc *pfc,
 				     const struct pinmux_cfg_reg *crp,
 				     unsigned long in_pos,
-				     void __iomem **mapped_regp,
-				     unsigned long *maskp,
+				     void __iomem **mapped_regp, u32 *maskp,
 				     unsigned long *posp)
 {
 	unsigned int k;
@@ -202,14 +200,15 @@ static void sh_pfc_config_reg_helper(struct sh_pfc *pfc,
 
 static void sh_pfc_write_config_reg(struct sh_pfc *pfc,
 				    const struct pinmux_cfg_reg *crp,
-				    unsigned long field, unsigned long value)
+				    unsigned long field, u32 value)
 {
 	void __iomem *mapped_reg;
-	unsigned long mask, pos, data;
+	unsigned long pos;
+	u32 mask, data;
 
 	sh_pfc_config_reg_helper(pfc, crp, field, &mapped_reg, &mask, &pos);
 
-	dev_dbg(pfc->dev, "write_reg addr = %lx, value = %ld, field = %ld, "
+	dev_dbg(pfc->dev, "write_reg addr = %lx, value = 0x%x, field = %ld, "
 		"r_width = %ld, f_width = %ld\n",
 		crp->reg, value, field, crp->reg_width, crp->field_width);
 
@@ -230,11 +229,12 @@ static void sh_pfc_write_config_reg(struct sh_pfc *pfc,
 
 static int sh_pfc_get_config_reg(struct sh_pfc *pfc, u16 enum_id,
 				 const struct pinmux_cfg_reg **crp, int *fieldp,
-				 int *valuep)
+				 u32 *valuep)
 {
 	const struct pinmux_cfg_reg *config_reg;
-	unsigned long r_width, f_width, curr_width, ncomb;
-	unsigned int k, m, n, pos, bit_pos;
+	unsigned long r_width, f_width, curr_width;
+	unsigned int k, m, pos, bit_pos;
+	u32 ncomb, n;
 
 	k = 0;
 	while (1) {
@@ -300,7 +300,8 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
 	const struct pinmux_cfg_reg *cr = NULL;
 	u16 enum_id;
 	const struct pinmux_range *range;
-	int in_range, pos, field, value;
+	int in_range, pos, field;
+	u32 value;
 	int ret;
 
 	switch (pinmux_type) {

drivers/pinctrl/sh-pfc/core.h

@@ -57,10 +57,9 @@ int sh_pfc_unregister_gpiochip(struct sh_pfc *pfc);
 int sh_pfc_register_pinctrl(struct sh_pfc *pfc);
 int sh_pfc_unregister_pinctrl(struct sh_pfc *pfc);
 
-unsigned long sh_pfc_read_raw_reg(void __iomem *mapped_reg,
-				  unsigned long reg_width);
+u32 sh_pfc_read_raw_reg(void __iomem *mapped_reg, unsigned long reg_width);
 void sh_pfc_write_raw_reg(void __iomem *mapped_reg, unsigned long reg_width,
-			  unsigned long data);
+			  u32 data);
 
 int sh_pfc_get_pin_index(struct sh_pfc *pfc, unsigned int pin);
 int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type);

drivers/pinctrl/sh-pfc/gpio.c

@@ -21,7 +21,7 @@
 
 struct sh_pfc_gpio_data_reg {
 	const struct pinmux_data_reg *info;
-	unsigned long shadow;
+	u32 shadow;
 };
 
 struct sh_pfc_gpio_pin {
@@ -59,8 +59,8 @@ static void gpio_get_data_reg(struct sh_pfc_chip *chip, unsigned int offset,
 	*bit = gpio_pin->dbit;
 }
 
-static unsigned long gpio_read_data_reg(struct sh_pfc_chip *chip,
-					const struct pinmux_data_reg *dreg)
+static u32 gpio_read_data_reg(struct sh_pfc_chip *chip,
+			      const struct pinmux_data_reg *dreg)
 {
 	void __iomem *mem = dreg->reg - chip->mem->phys + chip->mem->virt;
 
@@ -68,8 +68,7 @@ static unsigned long gpio_read_data_reg(struct sh_pfc_chip *chip,
 }
 
 static void gpio_write_data_reg(struct sh_pfc_chip *chip,
-				const struct pinmux_data_reg *dreg,
-				unsigned long value)
+				const struct pinmux_data_reg *dreg, u32 value)
 {
 	void __iomem *mem = dreg->reg - chip->mem->phys + chip->mem->virt;
 
@@ -162,9 +161,9 @@ static void gpio_pin_set_value(struct sh_pfc_chip *chip, unsigned offset,
 	pos = reg->info->reg_width - (bit + 1);
 
 	if (value)
-		set_bit(pos, &reg->shadow);
+		reg->shadow |= BIT(pos);
 	else
-		clear_bit(pos, &reg->shadow);
+		reg->shadow &= ~BIT(pos);
 
 	gpio_write_data_reg(chip, reg->info, reg->shadow);
 }