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Message-Id: <1526299191-1140-1-git-send-email-david.wu@rock-chips.com>
Date: Mon, 14 May 2018 19:59:51 +0800
From: David Wu <david.wu@...k-chips.com>
To: heiko@...ech.de, linus.walleij@...aro.org
Cc: huangtao@...k-chips.com, linux-rockchip@...ts.infradead.org,
linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
David Wu <david.wu@...k-chips.com>
Subject: [PATCH] pinctrl: rockchip: Add pinctrl support for PX30
There are 4 banks (GPIO0 ~ GPIO3), bank0 is in PD_PMU
subsystem, bank1/bank2/bank3 are in PD_BUS subsystem.
Signed-off-by: David Wu <david.wu@...k-chips.com>
---
.../bindings/pinctrl/rockchip,pinctrl.txt | 1 +
drivers/pinctrl/pinctrl-rockchip.c | 194 +++++++++++++++++++++
2 files changed, 195 insertions(+)
diff --git a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
index a01a3b8..0919db2 100644
--- a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
@@ -20,6 +20,7 @@ defined as gpio sub-nodes of the pinmux controller.
Required properties for iomux controller:
- compatible: should be
+ "rockchip,px30-pinctrl": for Rockchip PX30
"rockchip,rv1108-pinctrl": for Rockchip RV1108
"rockchip,rk2928-pinctrl": for Rockchip RK2928
"rockchip,rk3066a-pinctrl": for Rockchip RK3066a
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 3924779..88d4077 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -59,6 +59,7 @@
#define GPIO_LS_SYNC 0x60
enum rockchip_pinctrl_type {
+ PX30,
RV1108,
RK2928,
RK3066B,
@@ -701,6 +702,66 @@ static void rockchip_get_recalced_mux(struct rockchip_pin_bank *bank, int pin,
*bit = data->bit;
}
+static struct rockchip_mux_route_data px30_mux_route_data[] = {
+ {
+ /* cif-d2m0 */
+ .bank_num = 2,
+ .pin = 0,
+ .func = 1,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 7),
+ }, {
+ /* cif-d2m1 */
+ .bank_num = 3,
+ .pin = 3,
+ .func = 3,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 7) | BIT(7),
+ }, {
+ /* pdm-m0 */
+ .bank_num = 3,
+ .pin = 22,
+ .func = 2,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 8),
+ }, {
+ /* pdm-m1 */
+ .bank_num = 2,
+ .pin = 22,
+ .func = 1,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 8) | BIT(8),
+ }, {
+ /* uart2-rxm0 */
+ .bank_num = 1,
+ .pin = 27,
+ .func = 2,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 10),
+ }, {
+ /* uart2-rxm1 */
+ .bank_num = 2,
+ .pin = 14,
+ .func = 2,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 10) | BIT(10),
+ }, {
+ /* uart3-rxm0 */
+ .bank_num = 0,
+ .pin = 17,
+ .func = 2,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 9),
+ }, {
+ /* uart3-rxm1 */
+ .bank_num = 1,
+ .pin = 15,
+ .func = 2,
+ .route_offset = 0x184,
+ .route_val = BIT(16 + 9) | BIT(9),
+ },
+};
+
static struct rockchip_mux_route_data rk3128_mux_route_data[] = {
{
/* spi-0 */
@@ -1202,6 +1263,97 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
return ret;
}
+#define PX30_PULL_PMU_OFFSET 0x10
+#define PX30_PULL_GRF_OFFSET 0x60
+#define PX30_PULL_BITS_PER_PIN 2
+#define PX30_PULL_PINS_PER_REG 8
+#define PX30_PULL_BANK_STRIDE 16
+
+static void px30_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
+ int pin_num, struct regmap **regmap,
+ int *reg, u8 *bit)
+{
+ struct rockchip_pinctrl *info = bank->drvdata;
+
+ /* The first 32 pins of the first bank are located in PMU */
+ if (bank->bank_num == 0) {
+ *regmap = info->regmap_pmu;
+ *reg = PX30_PULL_PMU_OFFSET;
+ } else {
+ *regmap = info->regmap_base;
+ *reg = PX30_PULL_GRF_OFFSET;
+
+ /* correct the offset, as we're starting with the 2nd bank */
+ *reg -= 0x10;
+ *reg += bank->bank_num * PX30_PULL_BANK_STRIDE;
+ }
+
+ *reg += ((pin_num / PX30_PULL_PINS_PER_REG) * 4);
+ *bit = (pin_num % PX30_PULL_PINS_PER_REG);
+ *bit *= PX30_PULL_BITS_PER_PIN;
+}
+
+#define PX30_DRV_PMU_OFFSET 0x20
+#define PX30_DRV_GRF_OFFSET 0xf0
+#define PX30_DRV_BITS_PER_PIN 2
+#define PX30_DRV_PINS_PER_REG 8
+#define PX30_DRV_BANK_STRIDE 16
+
+static void px30_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
+ int pin_num, struct regmap **regmap,
+ int *reg, u8 *bit)
+{
+ struct rockchip_pinctrl *info = bank->drvdata;
+
+ /* The first 32 pins of the first bank are located in PMU */
+ if (bank->bank_num == 0) {
+ *regmap = info->regmap_pmu;
+ *reg = PX30_DRV_PMU_OFFSET;
+ } else {
+ *regmap = info->regmap_base;
+ *reg = PX30_DRV_GRF_OFFSET;
+
+ /* correct the offset, as we're starting with the 2nd bank */
+ *reg -= 0x10;
+ *reg += bank->bank_num * PX30_DRV_BANK_STRIDE;
+ }
+
+ *reg += ((pin_num / PX30_DRV_PINS_PER_REG) * 4);
+ *bit = (pin_num % PX30_DRV_PINS_PER_REG);
+ *bit *= PX30_DRV_BITS_PER_PIN;
+}
+
+#define PX30_SCHMITT_PMU_OFFSET 0x38
+#define PX30_SCHMITT_GRF_OFFSET 0xc0
+#define PX30_SCHMITT_PINS_PER_PMU_REG 16
+#define PX30_SCHMITT_BANK_STRIDE 16
+#define PX30_SCHMITT_PINS_PER_GRF_REG 8
+
+static int px30_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank,
+ int pin_num,
+ struct regmap **regmap,
+ int *reg, u8 *bit)
+{
+ struct rockchip_pinctrl *info = bank->drvdata;
+ int pins_per_reg;
+
+ if (bank->bank_num == 0) {
+ *regmap = info->regmap_pmu;
+ *reg = PX30_SCHMITT_PMU_OFFSET;
+ pins_per_reg = PX30_SCHMITT_PINS_PER_PMU_REG;
+ } else {
+ *regmap = info->regmap_base;
+ *reg = PX30_SCHMITT_GRF_OFFSET;
+ pins_per_reg = PX30_SCHMITT_PINS_PER_GRF_REG;
+ *reg += (bank->bank_num - 1) * PX30_SCHMITT_BANK_STRIDE;
+ }
+
+ *reg += ((pin_num / pins_per_reg) * 4);
+ *bit = pin_num % pins_per_reg;
+
+ return 0;
+}
+
#define RV1108_PULL_PMU_OFFSET 0x10
#define RV1108_PULL_OFFSET 0x110
#define RV1108_PULL_PINS_PER_REG 8
@@ -1798,6 +1950,7 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
return !(data & BIT(bit))
? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
: PIN_CONFIG_BIAS_DISABLE;
+ case PX30:
case RV1108:
case RK3188:
case RK3288:
@@ -1841,6 +1994,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
data |= BIT(bit);
ret = regmap_write(regmap, reg, data);
break;
+ case PX30:
case RV1108:
case RK3188:
case RK3288:
@@ -2103,6 +2257,7 @@ static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
pull == PIN_CONFIG_BIAS_DISABLE);
case RK3066B:
return pull ? false : true;
+ case PX30:
case RV1108:
case RK3188:
case RK3288:
@@ -3237,6 +3392,43 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
return 0;
}
+static struct rockchip_pin_bank px30_pin_banks[] = {
+ PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU,
+ IOMUX_SOURCE_PMU
+ ),
+ PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT
+ ),
+ PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT
+ ),
+ PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT,
+ IOMUX_WIDTH_4BIT
+ ),
+};
+
+static struct rockchip_pin_ctrl px30_pin_ctrl = {
+ .pin_banks = px30_pin_banks,
+ .nr_banks = ARRAY_SIZE(px30_pin_banks),
+ .label = "PX30-GPIO",
+ .type = PX30,
+ .grf_mux_offset = 0x0,
+ .pmu_mux_offset = 0x0,
+ .iomux_routes = px30_mux_route_data,
+ .niomux_routes = ARRAY_SIZE(px30_mux_route_data),
+ .pull_calc_reg = px30_calc_pull_reg_and_bit,
+ .drv_calc_reg = px30_calc_drv_reg_and_bit,
+ .schmitt_calc_reg = px30_calc_schmitt_reg_and_bit,
+};
+
static struct rockchip_pin_bank rv1108_pin_banks[] = {
PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
IOMUX_SOURCE_PMU,
@@ -3545,6 +3737,8 @@ static struct rockchip_pin_ctrl rk3399_pin_ctrl = {
};
static const struct of_device_id rockchip_pinctrl_dt_match[] = {
+ { .compatible = "rockchip,px30-pinctrl",
+ .data = &px30_pin_ctrl },
{ .compatible = "rockchip,rv1108-pinctrl",
.data = &rv1108_pin_ctrl },
{ .compatible = "rockchip,rk2928-pinctrl",
--
2.7.4
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