[U-Boot] [PATCH] pinctrl: rockchip: Add 32bit writing function for rk3288 gpio0 pinctrl
David Wu
david.wu at rock-chips.com
Tue Feb 12 11:51:51 UTC 2019
There are no higher 16 writing corresponding bits for pmu_gpio0's
iomux/drive/pull at rk3288, need to read the value from register
firstly. Add the flag to distinguish it from normal registers.
Signed-off-by: David Wu <david.wu at rock-chips.com>
---
drivers/pinctrl/rockchip/pinctrl-rk3288.c | 17 ++++++--
.../pinctrl/rockchip/pinctrl-rockchip-core.c | 39 ++++++++++++++-----
drivers/pinctrl/rockchip/pinctrl-rockchip.h | 33 ++++++++++++++++
3 files changed, 76 insertions(+), 13 deletions(-)
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3288.c b/drivers/pinctrl/rockchip/pinctrl-rk3288.c
index 60585f3208..8b6ce11a63 100644
--- a/drivers/pinctrl/rockchip/pinctrl-rk3288.c
+++ b/drivers/pinctrl/rockchip/pinctrl-rk3288.c
@@ -92,10 +92,19 @@ static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
}
static struct rockchip_pin_bank rk3288_pin_banks[] = {
- PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
- IOMUX_SOURCE_PMU,
- IOMUX_SOURCE_PMU,
- IOMUX_UNROUTED
+ PIN_BANK_IOMUX_DRV_PULL_FLAGS(0, 24, "gpio0",
+ IOMUX_SOURCE_PMU | IOMUX_WRITABLE_32BIT,
+ IOMUX_SOURCE_PMU | IOMUX_WRITABLE_32BIT,
+ IOMUX_SOURCE_PMU | IOMUX_WRITABLE_32BIT,
+ IOMUX_UNROUTED,
+ DRV_TYPE_WRITABLE_32BIT,
+ DRV_TYPE_WRITABLE_32BIT,
+ DRV_TYPE_WRITABLE_32BIT,
+ 0,
+ PULL_TYPE_WRITABLE_32BIT,
+ PULL_TYPE_WRITABLE_32BIT,
+ PULL_TYPE_WRITABLE_32BIT,
+ 0
),
PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED,
IOMUX_UNROUTED,
diff --git a/drivers/pinctrl/rockchip/pinctrl-rockchip-core.c b/drivers/pinctrl/rockchip/pinctrl-rockchip-core.c
index b84b079064..ce935656f0 100644
--- a/drivers/pinctrl/rockchip/pinctrl-rockchip-core.c
+++ b/drivers/pinctrl/rockchip/pinctrl-rockchip-core.c
@@ -228,7 +228,13 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
}
}
- data = (mask << (bit + 16));
+ if (mux_type & IOMUX_WRITABLE_32BIT) {
+ regmap_read(regmap, reg, &data);
+ data &= ~(mask << bit);
+ } else {
+ data = (mask << (bit + 16));
+ }
+
data |= (mux & mask) << bit;
ret = regmap_write(regmap, reg, data);
@@ -252,7 +258,8 @@ static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
int reg, ret, i;
u32 data, rmask_bits, temp;
u8 bit;
- int drv_type = bank->drv[pin_num / 8].drv_type;
+ /* Where need to clean the special mask for rockchip_perpin_drv_list */
+ int drv_type = bank->drv[pin_num / 8].drv_type & (~DRV_TYPE_IO_MASK);
debug("setting drive of GPIO%d-%d to %d\n", bank->bank_num,
pin_num, strength);
@@ -324,10 +331,15 @@ static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank,
return -EINVAL;
}
- /* enable the write to the equivalent lower bits */
- data = ((1 << rmask_bits) - 1) << (bit + 16);
- data |= (ret << bit);
+ if (bank->drv[pin_num / 8].drv_type & DRV_TYPE_WRITABLE_32BIT) {
+ regmap_read(regmap, reg, &data);
+ data &= ~(((1 << rmask_bits) - 1) << bit);
+ } else {
+ /* enable the write to the equivalent lower bits */
+ data = ((1 << rmask_bits) - 1) << (bit + 16);
+ }
+ data |= (ret << bit);
ret = regmap_write(regmap, reg, data);
return ret;
}
@@ -375,7 +387,11 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
case RK3288:
case RK3368:
case RK3399:
- pull_type = bank->pull_type[pin_num / 8];
+ /*
+ * Where need to clean the special mask for
+ * rockchip_pull_list.
+ */
+ pull_type = bank->pull_type[pin_num / 8] & (~PULL_TYPE_IO_MASK);
ret = -EINVAL;
for (i = 0; i < ARRAY_SIZE(rockchip_pull_list[pull_type]);
i++) {
@@ -390,10 +406,15 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
return ret;
}
- /* enable the write to the equivalent lower bits */
- data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16);
- data |= (ret << bit);
+ if (bank->pull_type[pin_num / 8] & PULL_TYPE_WRITABLE_32BIT) {
+ regmap_read(regmap, reg, &data);
+ data &= ~(((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << bit);
+ } else {
+ /* enable the write to the equivalent lower bits */
+ data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16);
+ }
+ data |= (ret << bit);
ret = regmap_write(regmap, reg, data);
break;
default:
diff --git a/drivers/pinctrl/rockchip/pinctrl-rockchip.h b/drivers/pinctrl/rockchip/pinctrl-rockchip.h
index bc809630c1..5a6849c996 100644
--- a/drivers/pinctrl/rockchip/pinctrl-rockchip.h
+++ b/drivers/pinctrl/rockchip/pinctrl-rockchip.h
@@ -26,6 +26,7 @@ enum rockchip_pinctrl_type {
#define IOMUX_SOURCE_PMU BIT(2)
#define IOMUX_UNROUTED BIT(3)
#define IOMUX_WIDTH_3BIT BIT(4)
+#define IOMUX_WRITABLE_32BIT BIT(5)
/**
* Defined some common pins constants
@@ -49,6 +50,9 @@ struct rockchip_iomux {
int offset;
};
+#define DRV_TYPE_IO_MASK GENMASK(31, 16)
+#define DRV_TYPE_WRITABLE_32BIT BIT(31)
+
/**
* enum type index corresponding to rockchip_perpin_drv_list arrays index.
*/
@@ -61,6 +65,9 @@ enum rockchip_pin_drv_type {
DRV_TYPE_MAX
};
+#define PULL_TYPE_IO_MASK GENMASK(31, 16)
+#define PULL_TYPE_WRITABLE_32BIT BIT(31)
+
/**
* enum type index corresponding to rockchip_pull_list arrays index.
*/
@@ -200,6 +207,32 @@ struct rockchip_pin_bank {
}, \
}
+#define PIN_BANK_IOMUX_DRV_PULL_FLAGS(id, pins, label, iom0, iom1, \
+ iom2, iom3, drv0, drv1, drv2, \
+ drv3, pull0, pull1, pull2, \
+ pull3) \
+ { \
+ .bank_num = id, \
+ .nr_pins = pins, \
+ .name = label, \
+ .iomux = { \
+ { .type = iom0, .offset = -1 }, \
+ { .type = iom1, .offset = -1 }, \
+ { .type = iom2, .offset = -1 }, \
+ { .type = iom3, .offset = -1 }, \
+ }, \
+ .drv = { \
+ { .drv_type = drv0, .offset = -1 }, \
+ { .drv_type = drv1, .offset = -1 }, \
+ { .drv_type = drv2, .offset = -1 }, \
+ { .drv_type = drv3, .offset = -1 }, \
+ }, \
+ .pull_type[0] = pull0, \
+ .pull_type[1] = pull1, \
+ .pull_type[2] = pull2, \
+ .pull_type[3] = pull3, \
+ }
+
#define PIN_BANK_IOMUX_FLAGS_DRV_FLAGS_OFFSET_PULL_FLAGS(id, pins, \
label, iom0, iom1, iom2, \
iom3, drv0, drv1, drv2, \
--
2.19.1
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