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Message-Id: <1574690050.3.1@crapouillou.net>
Date: Mon, 25 Nov 2019 14:54:10 +0100
From: Paul Cercueil <paul@...pouillou.net>
To: Zhou Yanjie <zhouyanjie@...o.com>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
robh+dt@...nel.org, paul.burton@...s.com, paulburton@...nel.org,
mark.rutland@....com, syq@...ian.org
Subject: Re: [PATCH v5 4/4] pinctrl: Ingenic: Add pinctrl driver for X1830.
Hi Zhou,
Le lun., nov. 25, 2019 at 19:44, Zhou Yanjie <zhouyanjie@...o.com> a
écrit :
> Add support for probing the pinctrl-ingenic driver on the
> X1830 Soc from Ingenic.
>
> Signed-off-by: Zhou Yanjie <zhouyanjie@...o.com>
> ---
>
> Notes:
> v2:
> New patch.
>
> v2->v3:
> Add pinctrl drivers for the PWM of X1830.
>
> v3->v4:
> 1.Use local variables to streamline code.
> 2.Prevents processors older than X1830 from being
> configured in HiZ mode.
>
> v4->v5:
> Fix compile-time warnings.
> Reported-by: kbuild test robot <lkp@...el.com>
>
> drivers/pinctrl/pinctrl-ingenic.c | 345
> +++++++++++++++++++++++++++++++++++---
> 1 file changed, 324 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-ingenic.c
> b/drivers/pinctrl/pinctrl-ingenic.c
> index 1a99715..1b84b7f 100644
> --- a/drivers/pinctrl/pinctrl-ingenic.c
> +++ b/drivers/pinctrl/pinctrl-ingenic.c
> @@ -28,6 +28,10 @@
> #define GPIO_PIN 0x00
> #define GPIO_MSK 0x20
>
> +#define GPIO_HIZ 0x00
> +#define GPIO_PULLUP 0x01
> +#define GPIO_PULLDOWN 0x10
> +
> #define JZ4740_GPIO_DATA 0x10
> #define JZ4740_GPIO_PULL_DIS 0x30
> #define JZ4740_GPIO_FUNC 0x40
> @@ -45,6 +49,11 @@
> #define X1000_GPIO_PZ_BASE 0x700
> #define X1000_GPIO_PZ_GID2LD 0x7f0
>
> +#define X1830_GPIO_PEL0 0x110
> +#define X1830_GPIO_PEL1 0x120
> +#define X1830_GPIO_PZ_BASE 0x7000
> +#define X1830_GPIO_PZ_GID2LD 0x70f0
> +
> #define REG_SET(x) ((x) + 0x4)
> #define REG_CLEAR(x) ((x) + 0x8)
>
> @@ -60,6 +69,7 @@ enum jz_version {
> ID_X1000,
> ID_X1000E,
> ID_X1500,
> + ID_X1830,
> };
>
> struct ingenic_chip_info {
> @@ -1394,6 +1404,220 @@ static const struct ingenic_chip_info
> x1500_chip_info = {
> .pull_downs = x1000_pull_downs,
> };
>
> +static const u32 x1830_pull_ups[4] = {
> + 0x5fdfffc0, 0xffffefff, 0x1ffffbff, 0x0fcff3fc,
> +};
> +
> +static const u32 x1830_pull_downs[4] = {
> + 0x5fdfffc0, 0xffffefff, 0x1ffffbff, 0x0fcff3fc,
> +};
> +
> +static int x1830_uart0_data_pins[] = { 0x33, 0x36, };
> +static int x1830_uart0_hwflow_pins[] = { 0x34, 0x35, };
> +static int x1830_uart1_data_pins[] = { 0x38, 0x37, };
> +static int x1830_sfc_pins[] = { 0x17, 0x18, 0x1a, 0x19, 0x1b, 0x1c,
> };
> +static int x1830_ssi0_dt_pins[] = { 0x4c, };
> +static int x1830_ssi0_dr_pins[] = { 0x4b, };
> +static int x1830_ssi0_clk_pins[] = { 0x4f, };
> +static int x1830_ssi0_gpc_pins[] = { 0x4d, };
> +static int x1830_ssi0_ce0_pins[] = { 0x50, };
> +static int x1830_ssi0_ce1_pins[] = { 0x4e, };
> +static int x1830_ssi1_dt_c_pins[] = { 0x53, };
> +static int x1830_ssi1_dr_c_pins[] = { 0x54, };
> +static int x1830_ssi1_clk_c_pins[] = { 0x57, };
> +static int x1830_ssi1_gpc_c_pins[] = { 0x55, };
> +static int x1830_ssi1_ce0_c_pins[] = { 0x58, };
> +static int x1830_ssi1_ce1_c_pins[] = { 0x56, };
> +static int x1830_ssi1_dt_d_pins[] = { 0x62, };
> +static int x1830_ssi1_dr_d_pins[] = { 0x63, };
> +static int x1830_ssi1_clk_d_pins[] = { 0x66, };
> +static int x1830_ssi1_gpc_d_pins[] = { 0x64, };
> +static int x1830_ssi1_ce0_d_pins[] = { 0x67, };
> +static int x1830_ssi1_ce1_d_pins[] = { 0x65, };
> +static int x1830_mmc0_1bit_pins[] = { 0x24, 0x25, 0x20, };
> +static int x1830_mmc0_4bit_pins[] = { 0x21, 0x22, 0x23, };
> +static int x1830_mmc1_1bit_pins[] = { 0x42, 0x43, 0x44, };
> +static int x1830_mmc1_4bit_pins[] = { 0x45, 0x46, 0x47, };
> +static int x1830_i2c0_pins[] = { 0x0c, 0x0d, };
> +static int x1830_i2c1_pins[] = { 0x39, 0x3a, };
> +static int x1830_i2c2_pins[] = { 0x5b, 0x5c, };
> +static int x1830_pwm_pwm0_b_pins[] = { 0x31, };
> +static int x1830_pwm_pwm0_c_pins[] = { 0x4b, };
> +static int x1830_pwm_pwm1_b_pins[] = { 0x32, };
> +static int x1830_pwm_pwm1_c_pins[] = { 0x4c, };
> +static int x1830_pwm_pwm2_c_8_pins[] = { 0x48, };
> +static int x1830_pwm_pwm2_c_13_pins[] = { 0x4d, };
> +static int x1830_pwm_pwm3_c_9_pins[] = { 0x49, };
> +static int x1830_pwm_pwm3_c_14_pins[] = { 0x4e, };
> +static int x1830_pwm_pwm4_c_15_pins[] = { 0x4f, };
> +static int x1830_pwm_pwm4_c_25_pins[] = { 0x59, };
> +static int x1830_pwm_pwm5_c_16_pins[] = { 0x50, };
> +static int x1830_pwm_pwm5_c_26_pins[] = { 0x5a, };
> +static int x1830_pwm_pwm6_c_17_pins[] = { 0x51, };
> +static int x1830_pwm_pwm6_c_27_pins[] = { 0x5b, };
> +static int x1830_pwm_pwm7_c_18_pins[] = { 0x52, };
> +static int x1830_pwm_pwm7_c_28_pins[] = { 0x5c, };
> +static int x1830_mac_pins[] = {
> + 0x29, 0x30, 0x2f, 0x28, 0x2e, 0x2d, 0x2a, 0x2b, 0x26, 0x27,
> +};
> +
> +static int x1830_uart0_data_funcs[] = { 0, 0, };
> +static int x1830_uart0_hwflow_funcs[] = { 0, 0, };
> +static int x1830_uart1_data_funcs[] = { 0, 0, };
> +static int x1830_sfc_funcs[] = { 1, 1, 1, 1, 1, 1, };
> +static int x1830_ssi0_dt_funcs[] = { 0, };
> +static int x1830_ssi0_dr_funcs[] = { 0, };
> +static int x1830_ssi0_clk_funcs[] = { 0, };
> +static int x1830_ssi0_gpc_funcs[] = { 0, };
> +static int x1830_ssi0_ce0_funcs[] = { 0, };
> +static int x1830_ssi0_ce1_funcs[] = { 0, };
> +static int x1830_ssi1_dt_c_funcs[] = { 1, };
> +static int x1830_ssi1_dr_c_funcs[] = { 1, };
> +static int x1830_ssi1_clk_c_funcs[] = { 1, };
> +static int x1830_ssi1_gpc_c_funcs[] = { 1, };
> +static int x1830_ssi1_ce0_c_funcs[] = { 1, };
> +static int x1830_ssi1_ce1_c_funcs[] = { 1, };
> +static int x1830_ssi1_dt_d_funcs[] = { 2, };
> +static int x1830_ssi1_dr_d_funcs[] = { 2, };
> +static int x1830_ssi1_clk_d_funcs[] = { 2, };
> +static int x1830_ssi1_gpc_d_funcs[] = { 2, };
> +static int x1830_ssi1_ce0_d_funcs[] = { 2, };
> +static int x1830_ssi1_ce1_d_funcs[] = { 2, };
> +static int x1830_mmc0_1bit_funcs[] = { 0, 0, 0, };
> +static int x1830_mmc0_4bit_funcs[] = { 0, 0, 0, };
> +static int x1830_mmc1_1bit_funcs[] = { 0, 0, 0, };
> +static int x1830_mmc1_4bit_funcs[] = { 0, 0, 0, };
> +static int x1830_i2c0_funcs[] = { 1, 1, };
> +static int x1830_i2c1_funcs[] = { 0, 0, };
> +static int x1830_i2c2_funcs[] = { 1, 1, };
> +static int x1830_pwm_pwm0_b_funcs[] = { 0, };
> +static int x1830_pwm_pwm0_c_funcs[] = { 1, };
> +static int x1830_pwm_pwm1_b_funcs[] = { 0, };
> +static int x1830_pwm_pwm1_c_funcs[] = { 1, };
> +static int x1830_pwm_pwm2_c_8_funcs[] = { 0, };
> +static int x1830_pwm_pwm2_c_13_funcs[] = { 1, };
> +static int x1830_pwm_pwm3_c_9_funcs[] = { 0, };
> +static int x1830_pwm_pwm3_c_14_funcs[] = { 1, };
> +static int x1830_pwm_pwm4_c_15_funcs[] = { 1, };
> +static int x1830_pwm_pwm4_c_25_funcs[] = { 0, };
> +static int x1830_pwm_pwm5_c_16_funcs[] = { 1, };
> +static int x1830_pwm_pwm5_c_26_funcs[] = { 0, };
> +static int x1830_pwm_pwm6_c_17_funcs[] = { 1, };
> +static int x1830_pwm_pwm6_c_27_funcs[] = { 0, };
> +static int x1830_pwm_pwm7_c_18_funcs[] = { 1, };
> +static int x1830_pwm_pwm7_c_28_funcs[] = { 0, };
> +static int x1830_mac_funcs[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };
> +
> +static const struct group_desc x1830_groups[] = {
> + INGENIC_PIN_GROUP("uart0-data", x1830_uart0_data),
> + INGENIC_PIN_GROUP("uart0-hwflow", x1830_uart0_hwflow),
> + INGENIC_PIN_GROUP("uart1-data", x1830_uart1_data),
> + INGENIC_PIN_GROUP("sfc", x1830_sfc),
> + INGENIC_PIN_GROUP("ssi0-dt", x1830_ssi0_dt),
> + INGENIC_PIN_GROUP("ssi0-dr", x1830_ssi0_dr),
> + INGENIC_PIN_GROUP("ssi0-clk", x1830_ssi0_clk),
> + INGENIC_PIN_GROUP("ssi0-gpc", x1830_ssi0_gpc),
> + INGENIC_PIN_GROUP("ssi0-ce0", x1830_ssi0_ce0),
> + INGENIC_PIN_GROUP("ssi0-ce1", x1830_ssi0_ce1),
> + INGENIC_PIN_GROUP("ssi1-dt-c", x1830_ssi1_dt_c),
> + INGENIC_PIN_GROUP("ssi1-dr-c", x1830_ssi1_dr_c),
> + INGENIC_PIN_GROUP("ssi1-clk-c", x1830_ssi1_clk_c),
> + INGENIC_PIN_GROUP("ssi1-gpc-c", x1830_ssi1_gpc_c),
> + INGENIC_PIN_GROUP("ssi1-ce0-c", x1830_ssi1_ce0_c),
> + INGENIC_PIN_GROUP("ssi1-ce1-c", x1830_ssi1_ce1_c),
> + INGENIC_PIN_GROUP("ssi1-dt-d", x1830_ssi1_dt_d),
> + INGENIC_PIN_GROUP("ssi1-dr-d", x1830_ssi1_dr_d),
> + INGENIC_PIN_GROUP("ssi1-clk-d", x1830_ssi1_clk_d),
> + INGENIC_PIN_GROUP("ssi1-gpc-d", x1830_ssi1_gpc_d),
> + INGENIC_PIN_GROUP("ssi1-ce0-d", x1830_ssi1_ce0_d),
> + INGENIC_PIN_GROUP("ssi1-ce1-d", x1830_ssi1_ce1_d),
> + INGENIC_PIN_GROUP("mmc0-1bit", x1830_mmc0_1bit),
> + INGENIC_PIN_GROUP("mmc0-4bit", x1830_mmc0_4bit),
> + INGENIC_PIN_GROUP("mmc1-1bit", x1830_mmc1_1bit),
> + INGENIC_PIN_GROUP("mmc1-4bit", x1830_mmc1_4bit),
> + INGENIC_PIN_GROUP("i2c0-data", x1830_i2c0),
> + INGENIC_PIN_GROUP("i2c1-data", x1830_i2c1),
> + INGENIC_PIN_GROUP("i2c2-data", x1830_i2c2),
> + INGENIC_PIN_GROUP("pwm0-b", x1830_pwm_pwm0_b),
> + INGENIC_PIN_GROUP("pwm0-c", x1830_pwm_pwm0_c),
> + INGENIC_PIN_GROUP("pwm1-b", x1830_pwm_pwm1_b),
> + INGENIC_PIN_GROUP("pwm1-c", x1830_pwm_pwm1_c),
> + INGENIC_PIN_GROUP("pwm2-c-8", x1830_pwm_pwm2_c_8),
> + INGENIC_PIN_GROUP("pwm2-c-13", x1830_pwm_pwm2_c_13),
> + INGENIC_PIN_GROUP("pwm3-c-9", x1830_pwm_pwm3_c_9),
> + INGENIC_PIN_GROUP("pwm3-c-14", x1830_pwm_pwm3_c_14),
> + INGENIC_PIN_GROUP("pwm4-c-15", x1830_pwm_pwm4_c_15),
> + INGENIC_PIN_GROUP("pwm4-c-25", x1830_pwm_pwm4_c_25),
> + INGENIC_PIN_GROUP("pwm5-c-16", x1830_pwm_pwm5_c_16),
> + INGENIC_PIN_GROUP("pwm5-c-26", x1830_pwm_pwm5_c_26),
> + INGENIC_PIN_GROUP("pwm6-c-17", x1830_pwm_pwm6_c_17),
> + INGENIC_PIN_GROUP("pwm6-c-27", x1830_pwm_pwm6_c_27),
> + INGENIC_PIN_GROUP("pwm7-c-18", x1830_pwm_pwm7_c_18),
> + INGENIC_PIN_GROUP("pwm7-c-28", x1830_pwm_pwm7_c_28),
> + INGENIC_PIN_GROUP("mac", x1830_mac),
> +};
> +
> +static const char *x1830_uart0_groups[] = { "uart0-data",
> "uart0-hwflow", };
> +static const char *x1830_uart1_groups[] = { "uart1-data", };
> +static const char *x1830_sfc_groups[] = { "sfc", };
> +static const char *x1830_ssi0_groups[] = {
> + "ssi0-dt", "ssi0-dr", "ssi0-clk", "ssi0-gpc", "ssi0-ce0",
> "ssi0-ce1",
> +};
> +static const char *x1830_ssi1_groups[] = {
> + "ssi1-dt-c", "ssi1-dt-d",
> + "ssi1-dr-c", "ssi1-dr-d",
> + "ssi1-clk-c", "ssi1-clk-d",
> + "ssi1-gpc-c", "ssi1-gpc-d",
> + "ssi1-ce0-c", "ssi1-ce0-d",
> + "ssi1-ce1-c", "ssi1-ce1-d",
> +};
> +static const char *x1830_mmc0_groups[] = { "mmc0-1bit", "mmc0-4bit",
> };
> +static const char *x1830_mmc1_groups[] = { "mmc1-1bit", "mmc1-4bit",
> };
> +static const char *x1830_i2c0_groups[] = { "i2c0-data", };
> +static const char *x1830_i2c1_groups[] = { "i2c1-data", };
> +static const char *x1830_i2c2_groups[] = { "i2c2-data", };
> +static const char *x1830_pwm0_groups[] = { "pwm0-b", "pwm0-c", };
> +static const char *x1830_pwm1_groups[] = { "pwm1-b", "pwm1-c", };
> +static const char *x1830_pwm2_groups[] = { "pwm2-c-8", "pwm2-c-13",
> };
> +static const char *x1830_pwm3_groups[] = { "pwm3-c-9", "pwm3-c-14",
> };
> +static const char *x1830_pwm4_groups[] = { "pwm4-c-15", "pwm4-c-25",
> };
> +static const char *x1830_pwm5_groups[] = { "pwm5-c-16", "pwm5-c-26",
> };
> +static const char *x1830_pwm6_groups[] = { "pwm6-c-17", "pwm6-c-27",
> };
> +static const char *x1830_pwm7_groups[] = { "pwm7-c-18", "pwm7-c-28",
> };
> +static const char *x1830_mac_groups[] = { "mac", };
> +
> +static const struct function_desc x1830_functions[] = {
> + { "uart0", x1830_uart0_groups, ARRAY_SIZE(x1830_uart0_groups), },
> + { "uart1", x1830_uart1_groups, ARRAY_SIZE(x1830_uart1_groups), },
> + { "sfc", x1830_sfc_groups, ARRAY_SIZE(x1830_sfc_groups), },
> + { "ssi0", x1830_ssi0_groups, ARRAY_SIZE(x1830_ssi0_groups), },
> + { "ssi1", x1830_ssi1_groups, ARRAY_SIZE(x1830_ssi1_groups), },
> + { "mmc0", x1830_mmc0_groups, ARRAY_SIZE(x1830_mmc0_groups), },
> + { "mmc1", x1830_mmc1_groups, ARRAY_SIZE(x1830_mmc1_groups), },
> + { "i2c0", x1830_i2c0_groups, ARRAY_SIZE(x1830_i2c0_groups), },
> + { "i2c1", x1830_i2c1_groups, ARRAY_SIZE(x1830_i2c1_groups), },
> + { "i2c2", x1830_i2c2_groups, ARRAY_SIZE(x1830_i2c2_groups), },
> + { "pwm0", x1830_pwm0_groups, ARRAY_SIZE(x1830_pwm0_groups), },
> + { "pwm1", x1830_pwm1_groups, ARRAY_SIZE(x1830_pwm1_groups), },
> + { "pwm2", x1830_pwm2_groups, ARRAY_SIZE(x1830_pwm2_groups), },
> + { "pwm3", x1830_pwm3_groups, ARRAY_SIZE(x1830_pwm3_groups), },
> + { "pwm4", x1830_pwm4_groups, ARRAY_SIZE(x1830_pwm4_groups), },
> + { "pwm5", x1830_pwm5_groups, ARRAY_SIZE(x1830_pwm4_groups), },
> + { "pwm6", x1830_pwm6_groups, ARRAY_SIZE(x1830_pwm4_groups), },
> + { "pwm7", x1830_pwm7_groups, ARRAY_SIZE(x1830_pwm4_groups), },
> + { "mac", x1830_mac_groups, ARRAY_SIZE(x1830_mac_groups), },
> +};
> +
> +static const struct ingenic_chip_info x1830_chip_info = {
> + .num_chips = 4,
> + .groups = x1830_groups,
> + .num_groups = ARRAY_SIZE(x1830_groups),
> + .functions = x1830_functions,
> + .num_functions = ARRAY_SIZE(x1830_functions),
> + .pull_ups = x1830_pull_ups,
> + .pull_downs = x1830_pull_downs,
> +};
> +
> static u32 ingenic_gpio_read_reg(struct ingenic_gpio_chip *jzgc, u8
> reg)
> {
> unsigned int val;
> @@ -1422,13 +1646,20 @@ static void
> ingenic_gpio_shadow_set_bit(struct ingenic_gpio_chip *jzgc,
> else
> reg = REG_CLEAR(reg);
>
> - regmap_write(jzgc->jzpc->map, X1000_GPIO_PZ_BASE + reg,
> BIT(offset));
> + if (jzgc->jzpc->version >= ID_X1830)
> + regmap_write(jzgc->jzpc->map, X1830_GPIO_PZ_BASE + reg,
> BIT(offset));
> + else
> + regmap_write(jzgc->jzpc->map, X1000_GPIO_PZ_BASE + reg,
> BIT(offset));
> }
>
> static void ingenic_gpio_shadow_set_bit_load(struct
> ingenic_gpio_chip *jzgc)
> {
> - regmap_write(jzgc->jzpc->map, X1000_GPIO_PZ_GID2LD,
> - jzgc->gc.base / PINS_PER_GPIO_CHIP);
> + unsigned int offt = jzgc->gc.base / PINS_PER_GPIO_CHIP;
> +
> + if (jzgc->jzpc->version >= ID_X1830)
> + regmap_write(jzgc->jzpc->map, X1830_GPIO_PZ_GID2LD, offt);
> + else
> + regmap_write(jzgc->jzpc->map, X1000_GPIO_PZ_GID2LD, offt);
> }
>
> static inline bool ingenic_gpio_get_value(struct ingenic_gpio_chip
> *jzgc,
> @@ -1668,25 +1899,36 @@ static inline void ingenic_config_pin(struct
> ingenic_pinctrl *jzpc,
> unsigned int pin, u8 reg, bool set)
> {
> unsigned int idx = pin % PINS_PER_GPIO_CHIP;
> - unsigned int offt = pin / PINS_PER_GPIO_CHIP;
> + unsigned int offt1 = pin / PINS_PER_GPIO_CHIP;
> + unsigned int offt2 = set ? REG_SET(reg) : REG_CLEAR(reg);
>
> - regmap_write(jzpc->map, offt * 0x100 +
> - (set ? REG_SET(reg) : REG_CLEAR(reg)), BIT(idx));
> + if (jzpc->version >= ID_X1830)
> + regmap_write(jzpc->map, offt1 * 0x1000 + offt2, BIT(idx));
> + else
> + regmap_write(jzpc->map, offt1 * 0x100 + offt2, BIT(idx));
> }
>
> static inline void ingenic_shadow_config_pin(struct ingenic_pinctrl
> *jzpc,
> unsigned int pin, u8 reg, bool set)
> {
> unsigned int idx = pin % PINS_PER_GPIO_CHIP;
> + unsigned int offt = set ? REG_SET(reg) : REG_CLEAR(reg);
>
> - regmap_write(jzpc->map, X1000_GPIO_PZ_BASE +
> - (set ? REG_SET(reg) : REG_CLEAR(reg)), BIT(idx));
> + if (jzpc->version >= ID_X1830)
> + regmap_write(jzpc->map, X1830_GPIO_PZ_BASE + offt, BIT(idx));
> + else
> + regmap_write(jzpc->map, X1000_GPIO_PZ_BASE + offt, BIT(idx));
> }
>
> static inline void ingenic_shadow_config_pin_load(struct
> ingenic_pinctrl *jzpc,
> unsigned int pin)
> {
> - regmap_write(jzpc->map, X1000_GPIO_PZ_GID2LD, pin /
> PINS_PER_GPIO_CHIP);
> + unsigned int offt = pin / PINS_PER_GPIO_CHIP;
> +
> + if (jzpc->version >= ID_X1830)
> + regmap_write(jzpc->map, X1830_GPIO_PZ_GID2LD, offt);
> + else
> + regmap_write(jzpc->map, X1000_GPIO_PZ_GID2LD, offt);
> }
>
> static inline bool ingenic_get_pin_config(struct ingenic_pinctrl
> *jzpc,
> @@ -1696,7 +1938,10 @@ static inline bool
> ingenic_get_pin_config(struct ingenic_pinctrl *jzpc,
> unsigned int offt = pin / PINS_PER_GPIO_CHIP;
> unsigned int val;
>
> - regmap_read(jzpc->map, offt * 0x100 + reg, &val);
> + if (jzpc->version >= ID_X1830)
> + regmap_read(jzpc->map, offt * 0x1000 + reg, &val);
> + else
> + regmap_read(jzpc->map, offt * 0x100 + reg, &val);
>
> return val & BIT(idx);
> }
> @@ -1856,13 +2101,56 @@ static int ingenic_pinconf_get(struct
> pinctrl_dev *pctldev,
> return 0;
> }
>
> -static void ingenic_set_bias(struct ingenic_pinctrl *jzpc,
> - unsigned int pin, bool enabled)
> +static int ingenic_set_bias(struct ingenic_pinctrl *jzpc,
> + unsigned int pin, unsigned int bias)
> {
> - if (jzpc->version >= ID_JZ4760)
> - ingenic_config_pin(jzpc, pin, JZ4760_GPIO_PEN, !enabled);
> - else
> - ingenic_config_pin(jzpc, pin, JZ4740_GPIO_PULL_DIS, !enabled);
> + if (jzpc->version >= ID_X1830) {
> + unsigned int idx = pin % PINS_PER_GPIO_CHIP;
> + unsigned int offt = pin / PINS_PER_GPIO_CHIP;
> +
> + if (bias == GPIO_HIZ) {
> + if (idx < (PINS_PER_GPIO_CHIP / 2))
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_CLEAR(X1830_GPIO_PEL0), BIT(idx * 2) * 3);
> + else
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_CLEAR(X1830_GPIO_PEL1), BIT(idx % 16 * 2) * 3);
The hardcoded 16 here is PINS_PER_GPIO_CHIP / 2?
Why not calculate 'idx' with the proper modulo when it's defined,
instead of doing (idx % 16 * 2) everytime?
> + } else if (bias == GPIO_PULLUP) {
> + if (idx < (PINS_PER_GPIO_CHIP / 2)) {
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_SET(X1830_GPIO_PEL0), BIT(idx * 2));
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_CLEAR(X1830_GPIO_PEL0), BIT(idx * 2) * 2);
> + } else {
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_SET(X1830_GPIO_PEL1), BIT(idx % 16 * 2));
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_CLEAR(X1830_GPIO_PEL1), BIT(idx % 16 * 2) * 2);
> + }
> + } else {
> + if (idx < (PINS_PER_GPIO_CHIP / 2)) {
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_CLEAR(X1830_GPIO_PEL0), BIT(idx * 2));
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_SET(X1830_GPIO_PEL0), BIT(idx * 2) * 2);
> + } else {
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_CLEAR(X1830_GPIO_PEL1), BIT(idx % 16 * 2));
> + regmap_write(jzpc->map, offt * 0x1000 +
> + REG_SET(X1830_GPIO_PEL1), BIT(idx % 16 * 2) * 2);
> + }
> + }
> + } else if (jzpc->version >= ID_JZ4760) {
> + if (bias == GPIO_HIZ)
> + return -EINVAL;
Actually this is still not right, because it's now impossible to
disable the pull-ups on older JZ SoCs.
I got confused by the "GPIO_HIZ" setting, HiZ mean tristated output
GPIO, which is not what this is about and something that Ingenic SoCs
don't support. Naming that macro e.g. GPIO_PULL_DIS would be much more
representative to its meaning.
Please rename the macro and remove this check (and the other one below).
Cheers,
-Paul
> + ingenic_config_pin(jzpc, pin, JZ4760_GPIO_PEN, !bias);
> + } else {
> + if (bias == GPIO_HIZ)
> + return -EINVAL;
> + ingenic_config_pin(jzpc, pin, JZ4740_GPIO_PULL_DIS, !bias);
> + }
> +
> + return 0;
> }
>
> static int ingenic_pinconf_set(struct pinctrl_dev *pctldev, unsigned
> int pin,
> @@ -1872,6 +2160,7 @@ static int ingenic_pinconf_set(struct
> pinctrl_dev *pctldev, unsigned int pin,
> unsigned int idx = pin % PINS_PER_GPIO_CHIP;
> unsigned int offt = pin / PINS_PER_GPIO_CHIP;
> unsigned int cfg;
> + int ret;
>
> for (cfg = 0; cfg < num_configs; cfg++) {
> switch (pinconf_to_config_param(configs[cfg])) {
> @@ -1889,7 +2178,9 @@ static int ingenic_pinconf_set(struct
> pinctrl_dev *pctldev, unsigned int pin,
> case PIN_CONFIG_BIAS_DISABLE:
> dev_dbg(jzpc->dev, "disable pull-over for pin P%c%u\n",
> 'A' + offt, idx);
> - ingenic_set_bias(jzpc, pin, false);
> + ret = ingenic_set_bias(jzpc, pin, GPIO_HIZ);
> + if (ret)
> + return ret;
> break;
>
> case PIN_CONFIG_BIAS_PULL_UP:
> @@ -1897,7 +2188,9 @@ static int ingenic_pinconf_set(struct
> pinctrl_dev *pctldev, unsigned int pin,
> return -EINVAL;
> dev_dbg(jzpc->dev, "set pull-up for pin P%c%u\n",
> 'A' + offt, idx);
> - ingenic_set_bias(jzpc, pin, true);
> + ret = ingenic_set_bias(jzpc, pin, GPIO_PULLUP);
> + if (ret)
> + return ret;
> break;
>
> case PIN_CONFIG_BIAS_PULL_DOWN:
> @@ -1905,7 +2198,9 @@ static int ingenic_pinconf_set(struct
> pinctrl_dev *pctldev, unsigned int pin,
> return -EINVAL;
> dev_dbg(jzpc->dev, "set pull-down for pin P%c%u\n",
> 'A' + offt, idx);
> - ingenic_set_bias(jzpc, pin, true);
> + ret = ingenic_set_bias(jzpc, pin, GPIO_PULLDOWN);
> + if (ret)
> + return ret;
> break;
>
> default:
> @@ -1987,6 +2282,7 @@ static const struct of_device_id
> ingenic_pinctrl_of_match[] = {
> { .compatible = "ingenic,x1000-pinctrl", .data = (void *) ID_X1000
> },
> { .compatible = "ingenic,x1000e-pinctrl", .data = (void *)
> ID_X1000E },
> { .compatible = "ingenic,x1500-pinctrl", .data = (void *) ID_X1500
> },
> + { .compatible = "ingenic,x1830-pinctrl", .data = (void *) ID_X1830
> },
> {},
> };
>
> @@ -1996,6 +2292,7 @@ static const struct of_device_id
> ingenic_gpio_of_match[] __initconst = {
> { .compatible = "ingenic,jz4770-gpio", },
> { .compatible = "ingenic,jz4780-gpio", },
> { .compatible = "ingenic,x1000-gpio", },
> + { .compatible = "ingenic,x1830-gpio", },
> {},
> };
>
> @@ -2018,7 +2315,10 @@ static int __init ingenic_gpio_probe(struct
> ingenic_pinctrl *jzpc,
> return -ENOMEM;
>
> jzgc->jzpc = jzpc;
> - jzgc->reg_base = bank * 0x100;
> + if (jzpc->version >= ID_X1830)
> + jzgc->reg_base = bank * 0x1000;
> + else
> + jzgc->reg_base = bank * 0x100;
>
> jzgc->gc.label = devm_kasprintf(dev, GFP_KERNEL, "GPIO%c", 'A' +
> bank);
> if (!jzgc->gc.label)
> @@ -2111,7 +2411,9 @@ static int __init ingenic_pinctrl_probe(struct
> platform_device *pdev)
> else
> jzpc->version = (enum jz_version)id->driver_data;
>
> - if (jzpc->version >= ID_X1500)
> + if (jzpc->version >= ID_X1830)
> + chip_info = &x1830_chip_info;
> + else if (jzpc->version >= ID_X1500)
> chip_info = &x1500_chip_info;
> else if (jzpc->version >= ID_X1000E)
> chip_info = &x1000e_chip_info;
> @@ -2208,6 +2510,7 @@ static const struct platform_device_id
> ingenic_pinctrl_ids[] = {
> { "x1000-pinctrl", ID_X1000 },
> { "x1000e-pinctrl", ID_X1000E },
> { "x1500-pinctrl", ID_X1500 },
> + { "x1830-pinctrl", ID_X1830 },
> {},
> };
>
> --
> 2.7.4
>
>
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