From: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> [ Upstream commit 42573ab3b9f94fbeba8b84e142703ea551624f6d ] Add error handling for the pull and driver register getters in preparation for RK3588 support. Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> Reviewed-by: Heiko Stübner <heiko@xxxxxxxxx> Link: https://lore.kernel.org/r/20220422170920.401914-13-sebastian.reichel@xxxxxxxxxxxxx Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Stable-dep-of: 31b62a98de42 ("pinctrl: rockchip: fix reading pull type on rk3568") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/pinctrl/pinctrl-rockchip.c | 168 ++++++++++++++++++----------- drivers/pinctrl/pinctrl-rockchip.h | 4 +- 2 files changed, 109 insertions(+), 63 deletions(-) diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index fcff8e7798b3..4888840dfc33 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -1039,9 +1039,9 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) #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) +static int 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; @@ -1061,6 +1061,8 @@ static void px30_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *reg += ((pin_num / PX30_PULL_PINS_PER_REG) * 4); *bit = (pin_num % PX30_PULL_PINS_PER_REG); *bit *= PX30_PULL_BITS_PER_PIN; + + return 0; } #define PX30_DRV_PMU_OFFSET 0x20 @@ -1069,9 +1071,9 @@ static void px30_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, #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) +static int 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; @@ -1091,6 +1093,8 @@ static void px30_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *reg += ((pin_num / PX30_DRV_PINS_PER_REG) * 4); *bit = (pin_num % PX30_DRV_PINS_PER_REG); *bit *= PX30_DRV_BITS_PER_PIN; + + return 0; } #define PX30_SCHMITT_PMU_OFFSET 0x38 @@ -1130,9 +1134,9 @@ static int px30_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank, #define RV1108_PULL_BITS_PER_PIN 2 #define RV1108_PULL_BANK_STRIDE 16 -static void rv1108_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rv1108_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; @@ -1151,6 +1155,8 @@ static void rv1108_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *reg += ((pin_num / RV1108_PULL_PINS_PER_REG) * 4); *bit = (pin_num % RV1108_PULL_PINS_PER_REG); *bit *= RV1108_PULL_BITS_PER_PIN; + + return 0; } #define RV1108_DRV_PMU_OFFSET 0x20 @@ -1159,9 +1165,9 @@ static void rv1108_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, #define RV1108_DRV_PINS_PER_REG 8 #define RV1108_DRV_BANK_STRIDE 16 -static void rv1108_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rv1108_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; @@ -1181,6 +1187,8 @@ static void rv1108_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *reg += ((pin_num / RV1108_DRV_PINS_PER_REG) * 4); *bit = pin_num % RV1108_DRV_PINS_PER_REG; *bit *= RV1108_DRV_BITS_PER_PIN; + + return 0; } #define RV1108_SCHMITT_PMU_OFFSET 0x30 @@ -1237,9 +1245,9 @@ static int rk3308_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank, #define RK2928_PULL_PINS_PER_REG 16 #define RK2928_PULL_BANK_STRIDE 8 -static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk2928_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; @@ -1249,13 +1257,15 @@ static void rk2928_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *reg += (pin_num / RK2928_PULL_PINS_PER_REG) * 4; *bit = pin_num % RK2928_PULL_PINS_PER_REG; + + return 0; }; #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) +static int 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; @@ -1265,6 +1275,8 @@ static void rk3128_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *reg += ((pin_num / RK2928_PULL_PINS_PER_REG) * 4); *bit = pin_num % RK2928_PULL_PINS_PER_REG; + + return 0; } #define RK3188_PULL_OFFSET 0x164 @@ -1273,9 +1285,9 @@ static void rk3128_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, #define RK3188_PULL_BANK_STRIDE 16 #define RK3188_PULL_PMU_OFFSET 0x64 -static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3188_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; @@ -1305,12 +1317,14 @@ static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = 7 - (pin_num % RK3188_PULL_PINS_PER_REG); *bit *= RK3188_PULL_BITS_PER_PIN; } + + return 0; } #define RK3288_PULL_OFFSET 0x140 -static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3288_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; @@ -1334,6 +1348,8 @@ static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3188_PULL_PINS_PER_REG); *bit *= RK3188_PULL_BITS_PER_PIN; } + + return 0; } #define RK3288_DRV_PMU_OFFSET 0x70 @@ -1342,9 +1358,9 @@ static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, #define RK3288_DRV_PINS_PER_REG 8 #define RK3288_DRV_BANK_STRIDE 16 -static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3288_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; @@ -1368,13 +1384,15 @@ static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3288_DRV_PINS_PER_REG); *bit *= RK3288_DRV_BITS_PER_PIN; } + + return 0; } #define RK3228_PULL_OFFSET 0x100 -static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3228_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; @@ -1385,13 +1403,15 @@ static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3188_PULL_PINS_PER_REG); *bit *= RK3188_PULL_BITS_PER_PIN; + + return 0; } #define RK3228_DRV_GRF_OFFSET 0x200 -static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3228_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; @@ -1402,13 +1422,15 @@ static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3288_DRV_PINS_PER_REG); *bit *= RK3288_DRV_BITS_PER_PIN; + + return 0; } #define RK3308_PULL_OFFSET 0xa0 -static void rk3308_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3308_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; @@ -1419,13 +1441,15 @@ static void rk3308_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3188_PULL_PINS_PER_REG); *bit *= RK3188_PULL_BITS_PER_PIN; + + return 0; } #define RK3308_DRV_GRF_OFFSET 0x100 -static void rk3308_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3308_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; @@ -1436,14 +1460,16 @@ static void rk3308_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3288_DRV_PINS_PER_REG); *bit *= RK3288_DRV_BITS_PER_PIN; + + return 0; } #define RK3368_PULL_GRF_OFFSET 0x100 #define RK3368_PULL_PMU_OFFSET 0x10 -static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3368_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; @@ -1467,14 +1493,16 @@ static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3188_PULL_PINS_PER_REG); *bit *= RK3188_PULL_BITS_PER_PIN; } + + return 0; } #define RK3368_DRV_PMU_OFFSET 0x20 #define RK3368_DRV_GRF_OFFSET 0x200 -static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3368_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; @@ -1498,15 +1526,17 @@ static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3288_DRV_PINS_PER_REG); *bit *= RK3288_DRV_BITS_PER_PIN; } + + return 0; } #define RK3399_PULL_GRF_OFFSET 0xe040 #define RK3399_PULL_PMU_OFFSET 0x40 #define RK3399_DRV_3BITS_PER_PIN 3 -static void rk3399_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3399_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; @@ -1532,11 +1562,13 @@ static void rk3399_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3188_PULL_PINS_PER_REG); *bit *= RK3188_PULL_BITS_PER_PIN; } + + return 0; } -static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3399_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; int drv_num = (pin_num / 8); @@ -1553,6 +1585,8 @@ static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % 8) * 3; else *bit = (pin_num % 8) * 2; + + return 0; } #define RK3568_PULL_PMU_OFFSET 0x20 @@ -1561,9 +1595,9 @@ static void rk3399_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, #define RK3568_PULL_PINS_PER_REG 8 #define RK3568_PULL_BANK_STRIDE 0x10 -static void rk3568_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3568_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; @@ -1584,6 +1618,8 @@ static void rk3568_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3568_PULL_PINS_PER_REG); *bit *= RK3568_PULL_BITS_PER_PIN; } + + return 0; } #define RK3568_DRV_PMU_OFFSET 0x70 @@ -1592,9 +1628,9 @@ static void rk3568_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, #define RK3568_DRV_PINS_PER_REG 2 #define RK3568_DRV_BANK_STRIDE 0x40 -static void rk3568_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, - int pin_num, struct regmap **regmap, - int *reg, u8 *bit) +static int rk3568_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; @@ -1615,6 +1651,8 @@ static void rk3568_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit = (pin_num % RK3568_DRV_PINS_PER_REG); *bit *= RK3568_DRV_BITS_PER_PIN; } + + return 0; } static int rockchip_perpin_drv_list[DRV_TYPE_MAX][8] = { @@ -1637,7 +1675,9 @@ static int rockchip_get_drive_perpin(struct rockchip_pin_bank *bank, u8 bit; int drv_type = bank->drv[pin_num / 8].drv_type; - ctrl->drv_calc_reg(bank, pin_num, ®map, ®, &bit); + ret = ctrl->drv_calc_reg(bank, pin_num, ®map, ®, &bit); + if (ret) + return ret; switch (drv_type) { case DRV_TYPE_IO_1V8_3V0_AUTO: @@ -1717,7 +1757,9 @@ static int rockchip_set_drive_perpin(struct rockchip_pin_bank *bank, dev_dbg(dev, "setting drive of GPIO%d-%d to %d\n", bank->bank_num, pin_num, strength); - ctrl->drv_calc_reg(bank, pin_num, ®map, ®, &bit); + ret = ctrl->drv_calc_reg(bank, pin_num, ®map, ®, &bit); + if (ret) + return ret; if (ctrl->type == RK3568) { rmask_bits = RK3568_DRV_BITS_PER_PIN; ret = (1 << (strength + 1)) - 1; @@ -1830,7 +1872,9 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num) if (ctrl->type == RK3066B) return PIN_CONFIG_BIAS_DISABLE; - ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit); + ret = ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit); + if (ret) + return ret; ret = regmap_read(regmap, reg, &data); if (ret) @@ -1877,7 +1921,9 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank, if (ctrl->type == RK3066B) return pull ? -EINVAL : 0; - ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit); + ret = ctrl->pull_calc_reg(bank, pin_num, ®map, ®, &bit); + if (ret) + return ret; switch (ctrl->type) { case RK2928: diff --git a/drivers/pinctrl/pinctrl-rockchip.h b/drivers/pinctrl/pinctrl-rockchip.h index 98a01a616da6..59116e13758d 100644 --- a/drivers/pinctrl/pinctrl-rockchip.h +++ b/drivers/pinctrl/pinctrl-rockchip.h @@ -230,10 +230,10 @@ struct rockchip_pin_ctrl { struct rockchip_mux_route_data *iomux_routes; u32 niomux_routes; - void (*pull_calc_reg)(struct rockchip_pin_bank *bank, + int (*pull_calc_reg)(struct rockchip_pin_bank *bank, int pin_num, struct regmap **regmap, int *reg, u8 *bit); - void (*drv_calc_reg)(struct rockchip_pin_bank *bank, + int (*drv_calc_reg)(struct rockchip_pin_bank *bank, int pin_num, struct regmap **regmap, int *reg, u8 *bit); int (*schmitt_calc_reg)(struct rockchip_pin_bank *bank, -- 2.39.0
