[PATCH 4/6] pinctrl: rockchip: enable iomuxes from pmu space
Heiko Stübner
heiko at sntech.de
Sun Jun 15 16:37:23 PDT 2014
The upcoming rk3288 moves some iomux settings to the pmu register space.
Therefore add a flag for this and adapt the mux functions accordingly.
Signed-off-by: Heiko Stuebner <heiko at sntech.de>
---
drivers/pinctrl/pinctrl-rockchip.c | 42 +++++++++++++++++++++++++++-----------
1 file changed, 30 insertions(+), 12 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 1da6ef9..115c75d 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -69,6 +69,7 @@ enum rockchip_pinctrl_type {
*/
#define IOMUX_GPIO_ONLY BIT(0)
#define IOMUX_WIDTH_4BIT BIT(1)
+#define IOMUX_SOURCE_PMU BIT(2)
/**
* @type: iomux variant using IOMUX_* constants
@@ -153,7 +154,8 @@ struct rockchip_pin_ctrl {
u32 nr_pins;
char *label;
enum rockchip_pinctrl_type type;
- int mux_offset;
+ int grf_mux_offset;
+ int pmu_mux_offset;
void (*pull_calc_reg)(struct rockchip_pin_bank *bank,
int pin_num, struct regmap **regmap,
int *reg, u8 *bit);
@@ -376,6 +378,7 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
{
struct rockchip_pinctrl *info = bank->drvdata;
int iomux_num = (pin / 8);
+ struct regmap *regmap;
unsigned int val;
int reg, ret, mask;
u8 bit;
@@ -386,6 +389,9 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY)
return RK_FUNC_GPIO;
+ regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
+ ? info->regmap_pmu : info->regmap_base;
+
/* 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;
@@ -397,7 +403,7 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
bit = (pin % 8) * 2;
}
- ret = regmap_read(info->regmap_base, reg, &val);
+ ret = regmap_read(regmap, reg, &val);
if (ret)
return ret;
@@ -421,6 +427,7 @@ 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);
+ struct regmap *regmap;
int reg, ret, mask;
unsigned long flags;
u8 bit;
@@ -442,6 +449,9 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
dev_dbg(info->dev, "setting mux of GPIO%d-%d to %d\n",
bank->bank_num, pin, mux);
+ regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
+ ? info->regmap_pmu : info->regmap_base;
+
/* 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;
@@ -457,7 +467,7 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
data = (mask << (bit + 16));
data |= (mux & mask) << bit;
- ret = regmap_write(info->regmap_base, reg, data);
+ ret = regmap_write(regmap, reg, data);
spin_unlock_irqrestore(&bank->slock, flags);
@@ -1553,7 +1563,7 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
struct device_node *np;
struct rockchip_pin_ctrl *ctrl;
struct rockchip_pin_bank *bank;
- int grf_offs, i, j;
+ int grf_offs, pmu_offs, i, j;
match = of_match_node(rockchip_pinctrl_dt_match, node);
ctrl = (struct rockchip_pin_ctrl *)match->data;
@@ -1575,7 +1585,8 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
}
}
- grf_offs = ctrl->mux_offset;
+ grf_offs = ctrl->grf_mux_offset;
+ pmu_offs = ctrl->pmu_mux_offset;
bank = ctrl->pin_banks;
for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
int bank_pins = 0;
@@ -1595,9 +1606,13 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
/* preset offset value, set new start value */
if (iom->offset >= 0) {
- grf_offs = iom->offset;
+ if (iom->type & IOMUX_SOURCE_PMU)
+ pmu_offs = iom->offset;
+ else
+ grf_offs = iom->offset;
} else { /* set current offset */
- iom->offset = grf_offs;
+ iom->offset = (iom->type & IOMUX_SOURCE_PMU) ?
+ pmu_offs : grf_offs;
}
dev_dbg(d->dev, "bank %d, iomux %d has offset 0x%x\n",
@@ -1608,7 +1623,10 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
* 4bit iomux'es are spread over two registers.
*/
inc = (iom->type & IOMUX_WIDTH_4BIT) ? 8 : 4;
- grf_offs += inc;
+ if (iom->type & IOMUX_SOURCE_PMU)
+ pmu_offs += inc;
+ else
+ grf_offs += inc;
bank_pins += 8;
}
@@ -1715,7 +1733,7 @@ static struct rockchip_pin_ctrl rk2928_pin_ctrl = {
.nr_banks = ARRAY_SIZE(rk2928_pin_banks),
.label = "RK2928-GPIO",
.type = RK2928,
- .mux_offset = 0xa8,
+ .grf_mux_offset = 0xa8,
.pull_calc_reg = rk2928_calc_pull_reg_and_bit,
};
@@ -1733,7 +1751,7 @@ static struct rockchip_pin_ctrl rk3066a_pin_ctrl = {
.nr_banks = ARRAY_SIZE(rk3066a_pin_banks),
.label = "RK3066a-GPIO",
.type = RK2928,
- .mux_offset = 0xa8,
+ .grf_mux_offset = 0xa8,
.pull_calc_reg = rk2928_calc_pull_reg_and_bit,
};
@@ -1749,7 +1767,7 @@ static struct rockchip_pin_ctrl rk3066b_pin_ctrl = {
.nr_banks = ARRAY_SIZE(rk3066b_pin_banks),
.label = "RK3066b-GPIO",
.type = RK3066B,
- .mux_offset = 0x60,
+ .grf_mux_offset = 0x60,
};
static struct rockchip_pin_bank rk3188_pin_banks[] = {
@@ -1764,7 +1782,7 @@ static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
.nr_banks = ARRAY_SIZE(rk3188_pin_banks),
.label = "RK3188-GPIO",
.type = RK3188,
- .mux_offset = 0x60,
+ .grf_mux_offset = 0x60,
.pull_calc_reg = rk3188_calc_pull_reg_and_bit,
};
--
1.9.0
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