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| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2021-11-10 22:46:20 +0000 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-11-15 10:44:09 +0100 |
| commit | 7f13a4297be04a1d5e6f025a44531d3c85c02524 (patch) | |
| tree | 12bac9fd79d256432091579ff96ce00f12e0f3bb /drivers/pinctrl | |
| parent | d1189991c823b50990291c8157b56fb141c47155 (diff) | |
| download | linux-stable-7f13a4297be04a1d5e6f025a44531d3c85c02524.tar.gz linux-stable-7f13a4297be04a1d5e6f025a44531d3c85c02524.tar.bz2 linux-stable-7f13a4297be04a1d5e6f025a44531d3c85c02524.zip | |
pinctrl: renesas: rzg2l: Add support to get/set pin config for GPIO port pins
Add support to get/set pin config for GPIO port pins.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20211110224622.16022-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/renesas/pinctrl-rzg2l.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c index 4465402367f9..a5c4bfb59692 100644 --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c @@ -106,6 +106,7 @@ #define PM_OUTPUT 0x2 #define RZG2L_PIN_ID_TO_PORT(id) ((id) / RZG2L_PINS_PER_PORT) +#define RZG2L_PIN_ID_TO_PORT_OFFSET(id) (RZG2L_PIN_ID_TO_PORT(id) + 0x10) #define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT) struct rzg2l_dedicated_configs { @@ -424,6 +425,23 @@ done: return ret; } +static int rzg2l_validate_gpio_pin(struct rzg2l_pinctrl *pctrl, + u32 cfg, u32 port, u8 bit) +{ + u8 pincount = RZG2L_GPIO_PORT_GET_PINCNT(cfg); + u32 port_index = RZG2L_GPIO_PORT_GET_INDEX(cfg); + u32 data; + + if (bit >= pincount || port >= pctrl->data->n_port_pins) + return -EINVAL; + + data = pctrl->data->port_pin_configs[port]; + if (port_index != RZG2L_GPIO_PORT_GET_INDEX(data)) + return -EINVAL; + + return 0; +} + static u32 rzg2l_read_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset, u8 bit, u32 mask) { @@ -466,9 +484,9 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev, const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin]; unsigned int *pin_data = pin->drv_data; unsigned int arg = 0; - u32 port_offset = 0; unsigned long flags; void __iomem *addr; + u32 port_offset; u32 cfg = 0; u8 bit = 0; @@ -479,6 +497,13 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev, port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data); cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data); bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data); + } else { + cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data); + port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin); + bit = RZG2L_PIN_ID_TO_PIN(_pin); + + if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit)) + return -EINVAL; } switch (param) { @@ -525,9 +550,9 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev, const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin]; unsigned int *pin_data = pin->drv_data; enum pin_config_param param; - u32 port_offset = 0; unsigned long flags; void __iomem *addr; + u32 port_offset; unsigned int i; u32 cfg = 0; u8 bit = 0; @@ -539,6 +564,13 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev, port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data); cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data); bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data); + } else { + cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data); + port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin); + bit = RZG2L_PIN_ID_TO_PIN(_pin); + + if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit)) + return -EINVAL; } for (i = 0; i < num_configs; i++) { |