From 04d231b90e66fc013a85f556e4dbf19a2c3ef7ea Mon Sep 17 00:00:00 2001 From: Lad Prabhakar Date: Mon, 29 Jan 2024 13:55:53 +0000 Subject: [PATCH] pinctrl: renesas: rzg2l: Improve code for readability As the RZ/G2L pinctrl driver is extensively utilized by numerous SoCs and has experienced substantial growth, enhance code readability by incorporating FIELD_PREP_CONST/FIELD_GET macros wherever necessary. Signed-off-by: Lad Prabhakar Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20240129135556.63466-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven --- drivers/pinctrl/renesas/pinctrl-rzg2l.c | 46 ++++++++++++++----------- 1 file changed, 26 insertions(+), 20 deletions(-) diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c index 01ef6921cb35..90fb67bc473f 100644 --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c @@ -5,6 +5,7 @@ * Copyright (C) 2021 Renesas Electronics Corporation. */ +#include #include #include #include @@ -38,8 +39,6 @@ */ #define MUX_PIN_ID_MASK GENMASK(15, 0) #define MUX_FUNC_MASK GENMASK(31, 16) -#define MUX_FUNC_OFFS 16 -#define MUX_FUNC(pinconf) (((pinconf) & MUX_FUNC_MASK) >> MUX_FUNC_OFFS) /* PIN capabilities */ #define PIN_CFG_IOLH_A BIT(0) @@ -81,8 +80,12 @@ * n indicates number of pins in the port, a is the register index * and f is pin configuration capabilities supported. */ -#define RZG2L_GPIO_PORT_PACK(n, a, f) (((n) << 28) | ((a) << 20) | (f)) -#define RZG2L_GPIO_PORT_GET_PINCNT(x) (((x) & GENMASK(30, 28)) >> 28) +#define PIN_CFG_PIN_CNT_MASK GENMASK(30, 28) +#define PIN_CFG_PIN_REG_MASK GENMASK(27, 20) +#define PIN_CFG_MASK GENMASK(19, 0) +#define RZG2L_GPIO_PORT_PACK(n, a, f) (FIELD_PREP_CONST(PIN_CFG_PIN_CNT_MASK, (n)) | \ + FIELD_PREP_CONST(PIN_CFG_PIN_REG_MASK, (a)) | \ + FIELD_PREP_CONST(PIN_CFG_MASK, (f))) /* * BIT(31) indicates dedicated pin, p is the register index while @@ -90,14 +93,17 @@ * (b * 8) and f is the pin configuration capabilities supported. */ #define RZG2L_SINGLE_PIN BIT(31) -#define RZG2L_SINGLE_PIN_PACK(p, b, f) (RZG2L_SINGLE_PIN | \ - ((p) << 24) | ((b) << 20) | (f)) -#define RZG2L_SINGLE_PIN_GET_BIT(x) (((x) & GENMASK(22, 20)) >> 20) +#define RZG2L_SINGLE_PIN_INDEX_MASK GENMASK(30, 24) +#define RZG2L_SINGLE_PIN_BITS_MASK GENMASK(22, 20) + +#define RZG2L_SINGLE_PIN_PACK(p, b, f) (RZG2L_SINGLE_PIN | \ + FIELD_PREP_CONST(RZG2L_SINGLE_PIN_INDEX_MASK, (p)) | \ + FIELD_PREP_CONST(RZG2L_SINGLE_PIN_BITS_MASK, (b)) | \ + FIELD_PREP_CONST(PIN_CFG_MASK, (f))) -#define RZG2L_PIN_CFG_TO_CAPS(cfg) ((cfg) & GENMASK(19, 0)) #define RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg) ((cfg) & RZG2L_SINGLE_PIN ? \ - (((cfg) & GENMASK(30, 24)) >> 24) : \ - (((cfg) & GENMASK(26, 20)) >> 20)) + FIELD_GET(RZG2L_SINGLE_PIN_INDEX_MASK, (cfg)) : \ + FIELD_GET(PIN_CFG_PIN_REG_MASK, (cfg))) #define P(off) (0x0000 + (off)) #define PM(off) (0x0100 + (off) * 2) @@ -432,8 +438,8 @@ static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev, ret = of_property_read_u32_index(np, "pinmux", i, &value); if (ret) goto done; - pins[i] = value & MUX_PIN_ID_MASK; - psel_val[i] = MUX_FUNC(value); + pins[i] = FIELD_GET(MUX_PIN_ID_MASK, value); + psel_val[i] = FIELD_GET(MUX_FUNC_MASK, value); } if (parent) { @@ -560,7 +566,7 @@ static int rzg2l_dt_node_to_map(struct pinctrl_dev *pctldev, static int rzg2l_validate_gpio_pin(struct rzg2l_pinctrl *pctrl, u32 cfg, u32 port, u8 bit) { - u8 pincount = RZG2L_GPIO_PORT_GET_PINCNT(cfg); + u8 pincount = FIELD_GET(PIN_CFG_PIN_CNT_MASK, cfg); u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg); u32 data; @@ -866,9 +872,9 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev, return -EINVAL; off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data); - cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data); + cfg = FIELD_GET(PIN_CFG_MASK, *pin_data); if (*pin_data & RZG2L_SINGLE_PIN) { - bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data); + bit = FIELD_GET(RZG2L_SINGLE_PIN_BITS_MASK, *pin_data); } else { bit = RZG2L_PIN_ID_TO_PIN(_pin); @@ -970,9 +976,9 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev, return -EINVAL; off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data); - cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data); + cfg = FIELD_GET(PIN_CFG_MASK, *pin_data); if (*pin_data & RZG2L_SINGLE_PIN) { - bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data); + bit = FIELD_GET(RZG2L_SINGLE_PIN_BITS_MASK, *pin_data); } else { bit = RZG2L_PIN_ID_TO_PIN(_pin); @@ -1608,12 +1614,12 @@ static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_ bit = virq % 8; if (port >= data->n_ports || - bit >= RZG2L_GPIO_PORT_GET_PINCNT(data->port_pin_configs[port])) + bit >= FIELD_GET(PIN_CFG_PIN_CNT_MASK, data->port_pin_configs[port])) return -EINVAL; gpioint = bit; for (i = 0; i < port; i++) - gpioint += RZG2L_GPIO_PORT_GET_PINCNT(data->port_pin_configs[i]); + gpioint += FIELD_GET(PIN_CFG_PIN_CNT_MASK, data->port_pin_configs[i]); return gpioint; } @@ -1788,7 +1794,7 @@ static void rzg2l_init_irq_valid_mask(struct gpio_chip *gc, bit = offset % 8; if (port >= pctrl->data->n_ports || - bit >= RZG2L_GPIO_PORT_GET_PINCNT(pctrl->data->port_pin_configs[port])) + bit >= FIELD_GET(PIN_CFG_PIN_CNT_MASK, pctrl->data->port_pin_configs[port])) clear_bit(offset, valid_mask); } }