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path: root/drivers/pinctrl
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Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-rockchip.c34
1 files changed, 26 insertions, 8 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 202ac82082d2..07c06e7171e7 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -68,6 +68,7 @@ enum rockchip_pinctrl_type {
* Encode variants of iomux registers into a type variable
*/
#define IOMUX_GPIO_ONLY BIT(0)
+#define IOMUX_WIDTH_4BIT BIT(1)
/**
* @type: iomux variant using IOMUX_* constants
@@ -376,7 +377,7 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
struct rockchip_pinctrl *info = bank->drvdata;
int iomux_num = (pin / 8);
unsigned int val;
- int reg, ret;
+ int reg, ret, mask;
u8 bit;
if (iomux_num > 3)
@@ -386,14 +387,21 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
return RK_FUNC_GPIO;
/* get basic quadrupel of mux registers and the correct reg inside */
+ mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3;
reg = bank->iomux[iomux_num].offset;
- bit = (pin % 8) * 2;
+ if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) {
+ if ((pin % 8) >= 4)
+ reg += 0x4;
+ bit = (pin % 4) * 4;
+ } else {
+ bit = (pin % 8) * 2;
+ }
ret = regmap_read(info->regmap_base, reg, &val);
if (ret)
return ret;
- return ((val >> bit) & 3);
+ return ((val >> bit) & mask);
}
/*
@@ -413,7 +421,7 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
{
struct rockchip_pinctrl *info = bank->drvdata;
int iomux_num = (pin / 8);
- int reg, ret;
+ int reg, ret, mask;
unsigned long flags;
u8 bit;
u32 data;
@@ -435,13 +443,20 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
bank->bank_num, pin, mux);
/* get basic quadrupel of mux registers and the correct reg inside */
+ mask = (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) ? 0xf : 0x3;
reg = bank->iomux[iomux_num].offset;
- bit = (pin % 8) * 2;
+ if (bank->iomux[iomux_num].type & IOMUX_WIDTH_4BIT) {
+ if ((pin % 8) >= 4)
+ reg += 0x4;
+ bit = (pin % 4) * 4;
+ } else {
+ bit = (pin % 8) * 2;
+ }
spin_lock_irqsave(&bank->slock, flags);
- data = (3 << (bit + 16));
- data |= (mux & 3) << bit;
+ data = (mask << (bit + 16));
+ data |= (mux & mask) << bit;
ret = regmap_write(info->regmap_base, reg, data);
spin_unlock_irqrestore(&bank->slock, flags);
@@ -1556,6 +1571,7 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
/* calculate iomux offsets */
for (j = 0; j < 4; j++) {
struct rockchip_iomux *iom = &bank->iomux[j];
+ int inc;
if (bank_pins >= bank->nr_pins)
break;
@@ -1572,8 +1588,10 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
/*
* Increase offset according to iomux width.
+ * 4bit iomux'es are spread over two registers.
*/
- grf_offs += 4;
+ inc = (iom->type & IOMUX_WIDTH_4BIT) ? 8 : 4;
+ grf_offs += inc;
bank_pins += 8;
}