[PATCH 0/2] Add RK3128 pinctrl support

[PATCH 0/2] Add RK3128 pinctrl support

[David Wu]

The RK3128 pinctrl is similar as the RK2928.

David Wu (2):
  pinctrl: rockchip: Use common interface for recalced iomux
  pinctrl: rockchip: Add rk3128 pinctrl support

 .../bindings/pinctrl/rockchip,pinctrl.txt          |   1 +
 drivers/pinctrl/pinctrl-rockchip.c                 | 218 +++++++++++++++++----
 2 files changed, 180 insertions(+), 39 deletions(-)

-- 
1.9.1

[PATCH 1/2] pinctrl: rockchip: Use common interface for recalced iomux

[David Wu]

The other Socs also need the feature of recalced iomux, so
make it as a common interface like iomux route feature.

Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 drivers/pinctrl/pinctrl-rockchip.c | 89 +++++++++++++++++++++-----------------
 1 file changed, 50 insertions(+), 39 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index e831647..fd4e491 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -76,7 +76,6 @@ enum rockchip_pinctrl_type {
 #define IOMUX_SOURCE_PMU	BIT(2)
 #define IOMUX_UNROUTED		BIT(3)
 #define IOMUX_WIDTH_3BIT	BIT(4)
-#define IOMUX_RECALCED		BIT(5)
 
 /**
  * @type: iomux variant using IOMUX_* constants
@@ -166,6 +165,7 @@ struct rockchip_pin_bank {
 	struct pinctrl_gpio_range	grange;
 	raw_spinlock_t			slock;
 	u32				toggle_edge_mode;
+	u32				recalced_mask;
 	u32				route_mask;
 };
 
@@ -291,6 +291,22 @@ struct rockchip_pin_bank {
 
 /**
  * struct rockchip_mux_recalced_data: represent a pin iomux data.
+ * @num: bank number.
+ * @pin: pin number.
+ * @bit: index at register.
+ * @reg: register offset.
+ * @mask: mask bit
+ */
+struct rockchip_mux_recalced_data {
+	u8 num;
+	u8 pin;
+	u8 reg;
+	u8 bit;
+	u8 mask;
+};
+
+/**
+ * struct rockchip_mux_recalced_data: represent a pin iomux data.
  * @bank_num: bank number.
  * @pin: index at register or used to calc index.
  * @func: the min pin.
@@ -317,6 +333,8 @@ struct rockchip_pin_ctrl {
 	int				pmu_mux_offset;
 	int				grf_drv_offset;
 	int				pmu_drv_offset;
+	struct rockchip_mux_recalced_data *iomux_recalced;
+	u32				niomux_recalced;
 	struct rockchip_mux_route_data *iomux_routes;
 	u32				niomux_routes;
 
@@ -326,8 +344,6 @@ struct rockchip_pin_ctrl {
 	void	(*drv_calc_reg)(struct rockchip_pin_bank *bank,
 				    int pin_num, struct regmap **regmap,
 				    int *reg, u8 *bit);
-	void	(*iomux_recalc)(u8 bank_num, int pin, int *reg,
-				u8 *bit, int *mask);
 	int	(*schmitt_calc_reg)(struct rockchip_pin_bank *bank,
 				    int pin_num, struct regmap **regmap,
 				    int *reg, u8 *bit);
@@ -382,22 +398,6 @@ struct rockchip_pinctrl {
 	unsigned int			nfunctions;
 };
 
-/**
- * struct rockchip_mux_recalced_data: represent a pin iomux data.
- * @num: bank number.
- * @pin: pin number.
- * @bit: index at register.
- * @reg: register offset.
- * @mask: mask bit
- */
-struct rockchip_mux_recalced_data {
-	u8 num;
-	u8 pin;
-	u8 reg;
-	u8 bit;
-	u8 mask;
-};
-
 static struct regmap_config rockchip_regmap_config = {
 	.reg_bits = 32,
 	.val_bits = 32,
@@ -557,7 +557,7 @@ static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
  * Hardware access
  */
 
-static const struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
+static struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
 	{
 		.num = 2,
 		.pin = 12,
@@ -579,20 +579,22 @@ static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
 	},
 };
 
-static void rk3328_recalc_mux(u8 bank_num, int pin, int *reg,
-			      u8 *bit, int *mask)
+static void rockchip_get_recalced_mux(struct rockchip_pin_bank *bank, int pin,
+				      int *reg, u8 *bit, int *mask)
 {
-	const struct rockchip_mux_recalced_data *data = NULL;
+	struct rockchip_pinctrl *info = bank->drvdata;
+	struct rockchip_pin_ctrl *ctrl = info->ctrl;
+	struct rockchip_mux_recalced_data *data;
 	int i;
 
-	for (i = 0; i < ARRAY_SIZE(rk3328_mux_recalced_data); i++)
-		if (rk3328_mux_recalced_data[i].num == bank_num &&
-		    rk3328_mux_recalced_data[i].pin == pin) {
-			data = &rk3328_mux_recalced_data[i];
+	for (i = 0; i < ctrl->niomux_recalced; i++) {
+		data = &ctrl->iomux_recalced[i];
+		if (data->num == bank->bank_num &&
+		    data->pin == pin)
 			break;
-		}
+	}
 
-	if (!data)
+	if (i >= ctrl->niomux_recalced)
 		return;
 
 	*reg = data->reg;
@@ -877,7 +879,6 @@ static bool rockchip_get_mux_route(struct rockchip_pin_bank *bank, int pin,
 static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
 {
 	struct rockchip_pinctrl *info = bank->drvdata;
-	struct rockchip_pin_ctrl *ctrl = info->ctrl;
 	int iomux_num = (pin / 8);
 	struct regmap *regmap;
 	unsigned int val;
@@ -916,8 +917,8 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin)
 		mask = 0x3;
 	}
 
-	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
-		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
+	if (bank->recalced_mask & BIT(pin))
+		rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
 
 	ret = regmap_read(regmap, reg, &val);
 	if (ret)
@@ -967,7 +968,6 @@ static int rockchip_verify_mux(struct rockchip_pin_bank *bank,
 static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 {
 	struct rockchip_pinctrl *info = bank->drvdata;
-	struct rockchip_pin_ctrl *ctrl = info->ctrl;
 	int iomux_num = (pin / 8);
 	struct regmap *regmap;
 	int reg, ret, mask, mux_type;
@@ -1005,8 +1005,8 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 		mask = 0x3;
 	}
 
-	if (ctrl->iomux_recalc && (mux_type & IOMUX_RECALCED))
-		ctrl->iomux_recalc(bank->bank_num, pin, &reg, &bit, &mask);
+	if (bank->recalced_mask & BIT(pin))
+		rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
 
 	if (bank->route_mask & BIT(pin)) {
 		if (rockchip_get_mux_route(bank, pin, mux, &route_reg,
@@ -2853,6 +2853,16 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
 			bank_pins += 8;
 		}
 
+		/* calculate the per-bank recalced_mask */
+		for (j = 0; j < ctrl->niomux_recalced; j++) {
+			int pin = 0;
+
+			if (ctrl->iomux_recalced[j].num == bank->bank_num) {
+				pin = ctrl->iomux_recalced[j].pin;
+				bank->recalced_mask |= BIT(pin);
+			}
+		}
+
 		/* calculate the per-bank route_mask */
 		for (j = 0; j < ctrl->niomux_routes; j++) {
 			int pin = 0;
@@ -3165,12 +3175,12 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0),
 	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
 	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0,
-			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
-			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
+			     IOMUX_WIDTH_3BIT,
+			     IOMUX_WIDTH_3BIT,
 			     0),
 	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3",
 			     IOMUX_WIDTH_3BIT,
-			     IOMUX_WIDTH_3BIT | IOMUX_RECALCED,
+			     IOMUX_WIDTH_3BIT,
 			     0,
 			     0),
 };
@@ -3181,11 +3191,12 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
 		.label			= "RK3328-GPIO",
 		.type			= RK3288,
 		.grf_mux_offset		= 0x0,
+		.iomux_recalced		= rk3328_mux_recalced_data,
+		.niomux_recalced	= ARRAY_SIZE(rk3328_mux_recalced_data),
 		.iomux_routes		= rk3328_mux_route_data,
 		.niomux_routes		= ARRAY_SIZE(rk3328_mux_route_data),
 		.pull_calc_reg		= rk3228_calc_pull_reg_and_bit,
 		.drv_calc_reg		= rk3228_calc_drv_reg_and_bit,
-		.iomux_recalc		= rk3328_recalc_mux,
 		.schmitt_calc_reg	= rk3328_calc_schmitt_reg_and_bit,
 };
 
-- 
1.9.1

Re: [PATCH 1/2] pinctrl: rockchip: Use common interface for recalced iomux

[Heiko Stuebner]

Am Freitag, 21. Juli 2017, 14:27:14 CEST schrieb David Wu:
> The other Socs also need the feature of recalced iomux, so
> make it as a common interface like iomux route feature.
> 
> Signed-off-by: David Wu <david.wu@rock-chips.com>
> ---
>  drivers/pinctrl/pinctrl-rockchip.c | 89 +++++++++++++++++++++-----------------
>  1 file changed, 50 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
> index e831647..fd4e491 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -76,7 +76,6 @@ enum rockchip_pinctrl_type {
>  #define IOMUX_SOURCE_PMU	BIT(2)
>  #define IOMUX_UNROUTED		BIT(3)
>  #define IOMUX_WIDTH_3BIT	BIT(4)
> -#define IOMUX_RECALCED		BIT(5)

very cool to see this flag go away and simply calculating the affected
bits is obviously a way nicer solution.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>

Thanks for that cleanup
Heiko

Re: [PATCH 1/2] pinctrl: rockchip: Use common interface for recalced iomux

[Linus Walleij]

On Fri, Jul 21, 2017 at 8:27 AM, David Wu <david.wu@rock-chips.com> wrote:

> The other Socs also need the feature of recalced iomux, so
> make it as a common interface like iomux route feature.
>
> Signed-off-by: David Wu <david.wu@rock-chips.com>

Patch applied with Heiko's review tag.

Yours,
Linus Walleij

[PATCH 2/2] pinctrl: rockchip: Add rk3128 pinctrl support

[David Wu]

There are 3 IP blocks pin routes need to be switched, that are
emmc-cmd, spi, i2s. And there are some pins need to be recalced,
which are gpio2c4~gpio2c7 and gpio2d0.
 
Signed-off-by: David Wu <david.wu@rock-chips.com>
---
 .../bindings/pinctrl/rockchip,pinctrl.txt          |   1 +
 drivers/pinctrl/pinctrl-rockchip.c                 | 129 +++++++++++++++++++++
 2 files changed, 130 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
index ee01ab5..58b7921 100644
--- a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
@@ -24,6 +24,7 @@ Required properties for iomux controller:
 		"rockchip,rk2928-pinctrl":  for Rockchip RK2928
 		"rockchip,rk3066a-pinctrl": for Rockchip RK3066a
 		"rockchip,rk3066b-pinctrl": for Rockchip RK3066b
+		"rockchip,rk3128-pinctrl":  for Rockchip RK3128
 		"rockchip,rk3188-pinctrl":  for Rockchip RK3188
 		"rockchip,rk3228-pinctrl":  for Rockchip RK3228
 		"rockchip,rk3288-pinctrl":  for Rockchip RK3288
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index fd4e491..7ba0c40 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -62,6 +62,7 @@ enum rockchip_pinctrl_type {
 	RV1108,
 	RK2928,
 	RK3066B,
+	RK3128,
 	RK3188,
 	RK3288,
 	RK3368,
@@ -557,6 +558,40 @@ static void rockchip_dt_free_map(struct pinctrl_dev *pctldev,
  * Hardware access
  */
 
+static  struct rockchip_mux_recalced_data rk3128_mux_recalced_data[] = {
+	{
+		.num = 2,
+		.pin = 20,
+		.reg = 0xe8,
+		.bit = 0,
+		.mask = 0x7
+	}, {
+		.num = 2,
+		.pin = 21,
+		.reg = 0xe8,
+		.bit = 4,
+		.mask = 0x7
+	}, {
+		.num = 2,
+		.pin = 22,
+		.reg = 0xe8,
+		.bit = 8,
+		.mask = 0x7
+	}, {
+		.num = 2,
+		.pin = 23,
+		.reg = 0xe8,
+		.bit = 12,
+		.mask = 0x7
+	}, {
+		.num = 2,
+		.pin = 24,
+		.reg = 0xd4,
+		.bit = 12,
+		.mask = 0x7
+	},
+};
+
 static struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
 	{
 		.num = 2,
@@ -602,6 +637,59 @@ static void rockchip_get_recalced_mux(struct rockchip_pin_bank *bank, int pin,
 	*bit = data->bit;
 }
 
+static struct rockchip_mux_route_data rk3128_mux_route_data[] = {
+	{
+		/* spi-0 */
+		.bank_num = 1,
+		.pin = 10,
+		.func = 1,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 3) | BIT(16 + 4),
+	}, {
+		/* spi-1 */
+		.bank_num = 1,
+		.pin = 27,
+		.func = 3,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 3) | BIT(16 + 4) | BIT(3),
+	}, {
+		/* spi-2 */
+		.bank_num = 0,
+		.pin = 13,
+		.func = 2,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 3) | BIT(16 + 4) | BIT(4),
+	}, {
+		/* i2s-0 */
+		.bank_num = 1,
+		.pin = 5,
+		.func = 1,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 5),
+	}, {
+		/* i2s-1 */
+		.bank_num = 0,
+		.pin = 14,
+		.func = 1,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 5) | BIT(5),
+	}, {
+		/* emmc-0 */
+		.bank_num = 1,
+		.pin = 22,
+		.func = 2,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 6),
+	}, {
+		/* emmc-1 */
+		.bank_num = 2,
+		.pin = 4,
+		.func = 2,
+		.route_offset = 0x144,
+		.route_val = BIT(16 + 6) | BIT(6),
+	},
+};
+
 static struct rockchip_mux_route_data rk3228_mux_route_data[] = {
 	{
 		/* pwm0-0 */
@@ -1102,6 +1190,22 @@ static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
 	*bit = pin_num % RK2928_PULL_PINS_PER_REG;
 };
 
+#define RK3128_PULL_OFFSET	0x118
+
+static void rk3128_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;
+
+	*regmap = info->regmap_base;
+	*reg = RK3128_PULL_OFFSET;
+	*reg += bank->bank_num * RK2928_PULL_BANK_STRIDE;
+	*reg += ((pin_num / RK2928_PULL_PINS_PER_REG) * 4);
+
+	*bit = pin_num % RK2928_PULL_PINS_PER_REG;
+}
+
 #define RK3188_PULL_OFFSET		0x164
 #define RK3188_PULL_BITS_PER_PIN	2
 #define RK3188_PULL_PINS_PER_REG	8
@@ -1571,6 +1675,7 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
 
 	switch (ctrl->type) {
 	case RK2928:
+	case RK3128:
 		return !(data & BIT(bit))
 				? PIN_CONFIG_BIAS_PULL_PIN_DEFAULT
 				: PIN_CONFIG_BIAS_DISABLE;
@@ -1611,6 +1716,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
 
 	switch (ctrl->type) {
 	case RK2928:
+	case RK3128:
 		data = BIT(bit + 16);
 		if (pull == PIN_CONFIG_BIAS_DISABLE)
 			data |= BIT(bit);
@@ -1865,6 +1971,7 @@ static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl,
 {
 	switch (ctrl->type) {
 	case RK2928:
+	case RK3128:
 		return (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT ||
 					pull == PIN_CONFIG_BIAS_DISABLE);
 	case RK3066B:
@@ -3093,6 +3200,26 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
 		.grf_mux_offset	= 0x60,
 };
 
+static struct rockchip_pin_bank rk3128_pin_banks[] = {
+	PIN_BANK(0, 32, "gpio0"),
+	PIN_BANK(1, 32, "gpio1"),
+	PIN_BANK(2, 32, "gpio2"),
+	PIN_BANK(3, 32, "gpio3"),
+};
+
+static struct rockchip_pin_ctrl rk3128_pin_ctrl = {
+		.pin_banks		= rk3128_pin_banks,
+		.nr_banks		= ARRAY_SIZE(rk3128_pin_banks),
+		.label			= "RK3128-GPIO",
+		.type			= RK3128,
+		.grf_mux_offset		= 0xa8,
+		.iomux_recalced		= rk3128_mux_recalced_data,
+		.niomux_recalced	= ARRAY_SIZE(rk3128_mux_recalced_data),
+		.iomux_routes		= rk3128_mux_route_data,
+		.niomux_routes		= ARRAY_SIZE(rk3128_mux_route_data),
+		.pull_calc_reg		= rk3128_calc_pull_reg_and_bit,
+};
+
 static struct rockchip_pin_bank rk3188_pin_banks[] = {
 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0),
 	PIN_BANK(1, 32, "gpio1"),
@@ -3301,6 +3428,8 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
 		.data = &rk3066a_pin_ctrl },
 	{ .compatible = "rockchip,rk3066b-pinctrl",
 		.data = &rk3066b_pin_ctrl },
+	{ .compatible = "rockchip,rk3128-pinctrl",
+		.data = (void *)&rk3128_pin_ctrl },
 	{ .compatible = "rockchip,rk3188-pinctrl",
 		.data = &rk3188_pin_ctrl },
 	{ .compatible = "rockchip,rk3228-pinctrl",
-- 
1.9.1

Re: [PATCH 2/2] pinctrl: rockchip: Add rk3128 pinctrl support

[Heiko Stuebner]

Am Freitag, 21. Juli 2017, 14:27:15 CEST schrieb David Wu:
> There are 3 IP blocks pin routes need to be switched, that are
> emmc-cmd, spi, i2s. And there are some pins need to be recalced,
> which are gpio2c4~gpio2c7 and gpio2d0.
>  
> Signed-off-by: David Wu <david.wu@rock-chips.com>

Reviewed-by: Heiko Stuebner <heiko@sntech.de>

Re: [PATCH 2/2] pinctrl: rockchip: Add rk3128 pinctrl support

[Linus Walleij]

On Fri, Jul 21, 2017 at 8:27 AM, David Wu <david.wu@rock-chips.com> wrote:

> There are 3 IP blocks pin routes need to be switched, that are
> emmc-cmd, spi, i2s. And there are some pins need to be recalced,
> which are gpio2c4~gpio2c7 and gpio2d0.
>
> Signed-off-by: David Wu <david.wu@rock-chips.com>

Patch applied with Heiko's review tag.

Yours,
Linus Walleij