Merge tag 'pinctrl-v4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for v4.18.

  No core changes this time! Just a calm all-over-the-place drivers,
  updates and fixes cycle as it seems.

  New drivers/subdrivers:

   - Actions Semiconductor S900 driver with more Actions variants for
     S700, S500 in the pipe. Also generic GPIO support on top of the
     same driver and IRQ support is in the pipe.

   - Renesas r8a77470 PFC support.

   - Renesas r8a77990 PFC support.

   - Allwinner Sunxi H6 R_PIO support.

   - Rockchip PX30 support.

   - Meson Meson8m2 support.

   - Remove support for the ill-fated Samsung Exynos 5440 SoC.

  Improvements:

   - Context save/restore support in pinctrl-single.

   - External interrupt support for the Mediatek MT7622.

   - Qualcomm ACPI HID QCOM8002 supported.

  Fixes:

   - Fix up suspend/resume support for Exynos 5433.

   - Fix Strago DMI fixes on the Intel Cherryview"

* tag 'pinctrl-v4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (72 commits)
  pinctrl: cherryview: limit Strago DMI workarounds to version 1.0
  pinctrl: at91-pio4: add missing of_node_put
  pinctrl: armada-37xx: Fix spurious irq management
  gpiolib: discourage gpiochip_add_pin[group]_range for DT pinctrls
  pinctrl: msm: fix gpio-hog related boot issues
  MAINTAINERS: update entry for Mediatek pin controller
  pinctrl: mediatek: remove unused fields in struct mtk_eint_hw
  pinctrl: mediatek: use generic EINT register maps for each SoC
  pinctrl: mediatek: add EINT support to MT7622 SoC
  pinctrl: mediatek: refactor EINT related code for all MediaTek pinctrl can fit
  dt-bindings: pinctrl: add external interrupt support to MT7622 pinctrl
  pinctrl: freescale: Switch to SPDX identifier
  pinctrl: samsung: Fix suspend/resume for Exynos5433 GPF1..5 banks
  pinctrl: sh-pfc: rcar-gen3: Fix grammar in static pin comments
  pinctrl: sh-pfc: r8a77965: Add I2C pin support
  pinctrl: sh-pfc: r8a77990: Add EthernetAVB pins, groups and functions
  pinctrl: sh-pfc: r8a77990: Add I2C{1,2,4,5,6,7} pins, groups and functions
  pinctrl: sh-pfc: r8a77990: Add SCIF pins, groups and functions
  pinctrl: sh-pfc: r8a77990: Add bias pinconf support
  pinctrl: sh-pfc: Initial R8A77990 PFC support
  ...

1 files changed, 246 insertions, 0 deletions

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 3924779f5578..1882713e68f9 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:
@@ -2555,6 +2710,57 @@ static int rockchip_gpio_direction_output(struct gpio_chip *gc,
 	return pinctrl_gpio_direction_output(gc->base + offset);
 }
 
+static void rockchip_gpio_set_debounce(struct gpio_chip *gc,
+				       unsigned int offset, bool enable)
+{
+	struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
+	void __iomem *reg = bank->reg_base + GPIO_DEBOUNCE;
+	unsigned long flags;
+	u32 data;
+
+	clk_enable(bank->clk);
+	raw_spin_lock_irqsave(&bank->slock, flags);
+
+	data = readl(reg);
+	if (enable)
+		data |= BIT(offset);
+	else
+		data &= ~BIT(offset);
+	writel(data, reg);
+
+	raw_spin_unlock_irqrestore(&bank->slock, flags);
+	clk_disable(bank->clk);
+}
+
+/*
+ * gpiolib set_config callback function. The setting of the pin
+ * mux function as 'gpio output' will be handled by the pinctrl subsystem
+ * interface.
+ */
+static int rockchip_gpio_set_config(struct gpio_chip *gc, unsigned int offset,
+				  unsigned long config)
+{
+	enum pin_config_param param = pinconf_to_config_param(config);
+
+	switch (param) {
+	case PIN_CONFIG_INPUT_DEBOUNCE:
+		rockchip_gpio_set_debounce(gc, offset, true);
+		/*
+		 * Rockchip's gpio could only support up to one period
+		 * of the debounce clock(pclk), which is far away from
+		 * satisftying the requirement, as pclk is usually near
+		 * 100MHz shared by all peripherals. So the fact is it
+		 * has crippled debounce capability could only be useful
+		 * to prevent any spurious glitches from waking up the system
+		 * if the gpio is conguired as wakeup interrupt source. Let's
+		 * still return -ENOTSUPP as before, to make sure the caller
+		 * of gpiod_set_debounce won't change its behaviour.
+		 */
+	default:
+		return -ENOTSUPP;
+	}
+}
+
 /*
  * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
  * and a virtual IRQ, if not already present.
@@ -2580,6 +2786,7 @@ static const struct gpio_chip rockchip_gpiolib_chip = {
 	.get_direction	= rockchip_gpio_get_direction,
 	.direction_input = rockchip_gpio_direction_input,
 	.direction_output = rockchip_gpio_direction_output,
+	.set_config = rockchip_gpio_set_config,
 	.to_irq = rockchip_gpio_to_irq,
 	.owner = THIS_MODULE,
 };
@@ -3237,6 +3444,43 @@ 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 +3789,8 @@ 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",