Hi Prabhakar,
On Mon, Jul 12, 2021 at 9:44 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> wrote:
>
> Add support for pin and gpio controller driver for RZ/G2L SoC.
>
> Based on a patch in the BSP by Hien Huynh <hien.huynh.px@xxxxxxxxxxx>.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Thanks for your patch!
BTW, I assume GPIO interrupt handling needs another block on top,
like on RZ/A using renesas,rza1-irqc?
> --- a/drivers/pinctrl/renesas/Kconfig
> +++ b/drivers/pinctrl/renesas/Kconfig
> @@ -176,6 +176,17 @@ config PINCTRL_RZA2
> help
> This selects GPIO and pinctrl driver for Renesas RZ/A2 platforms.
>
> +config PINCTRL_RZG2L
> + bool "pin control support for RZ/G2L"
> + depends on OF
> + depends on ARCH_R9A07G044 || COMPILE_TEST
> + select GPIOLIB
> + select GENERIC_PINCTRL_GROUPS
> + select GENERIC_PINMUX_FUNCTIONS
> + select GENERIC_PINCONF
> + help
> + This selects GPIO and pinctrl driver for Renesas RZ/G2L platforms.
> +
> config PINCTRL_PFC_R8A77470
> bool "pin control support for RZ/G1C" if COMPILE_TEST
> select PINCTRL_SH_PFC
Do you want pin control for RZ/G2L to be optional (like RZ/A and RZ/N),
or mandatory (like R-Car and RZ/G2[HMNE])?
With the above, it is optional.
> --- /dev/null
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> +#define RZG2L_MULTIPLEXED_PIN_FUNCS (PIN_CFG_DRIVE_STRENGTH | \
> + PIN_CFG_SLEW_RATE | \
> + PIN_CFG_PULL_UP_DOWN | \
> + PIN_CFG_FILONOFF | \
> + PIN_CFG_FILNUM | \
> + PIN_CFG_FILCLKSEL)
> +
> +#define RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(x) ((x) | \
> + PIN_CFG_FILONOFF | \
> + PIN_CFG_FILNUM | \
> + PIN_CFG_FILCLKSEL)
s/MULTIPLEXED/MPXED/? Or MULTI?
> +
> +/*
> + * 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(28, 0)) >> 28) & 0x7)
Can't the "& ~GENMASK(28, 0)" be dropped?
> +#define RZG2L_GPIO_PORT_GET_INDEX(x) ((((x) & ~GENMASK(19, 0) & ~GENMASK(31, 28)) >> 20) & 0x7f)
"& GENMASK(27, 20)"?
> +#define RZG2L_GPIO_PORT_GET_CFGS(x) ((x) & ~GENMASK(31, 20))
"& GENMASK(19, 0)"?
> +
> +/*
> + * BIT(31) indicates as dedicated pin, p is the register index while
> + * referencing to SR/IEN/IOLH/FILxx registers, b is the register bits
> + * (b * 8) and f is the pin configuration capabilities supported.
> + */
> +#define RZG2L_DEDICIATED_PIN BIT(31)
> +#define RZG2L_DEDICIATED_PIN_PACK(p, b, f) (RZG2L_DEDICIATED_PIN | \
> + ((p) << 24) | ((b) << 20) | (f))
> +#define RZG2L_DEDICIATED_PIN_GET_PORT(x) ((((x) & ~GENMASK(23, 0)) >> 24) & 0x7f)
> +#define RZG2L_DEDICIATED_PIN_GET_BIT(x) ((((x) & ~GENMASK(19, 0)) >> 20) & 0x7)
> +#define RZG2L_DEDICIATED_PIN_GET_CFGS(x) ((x) & ~GENMASK(31, 20))
DEDICATED? Or SINGLE (cfr. R-Car)?
> +
> +#define P(n) (0x0000 + 0x10 + (n))
> +#define PM(n) (0x0100 + 0x20 + (n) * 2)
> +#define PMC(n) (0x0200 + 0x10 + (n))
> +#define PFC(n) (0x0400 + 0x40 + (n) * 4)
> +#define PIN(n) (0x0800 + 0x10 + (n))
> +#define IEN(n) (0x1800 + (n) * 8)
> +#define PWPR (0x3014)
> +#define SD_CH(n) (0x3000 + (n) * 4)
> +
> +#define PVDD_1800 1 /* I/O domain voltage <= 1.8V */
> +#define PVDD_3300 0 /* I/O domain voltage >= 3.3V */
What's the meaning of the "<=" and ">=" in the comments?
> +
> +#define PWPR_B0WI BIT(7) /* Bit Write Disable */
> +#define PWPR_PFCWE BIT(6) /* PFC Register Write Enable */
> +
> +#define PM_MASK 0x03
> +#define PVDD_MASK 0x01
> +#define PFC_MASK 0x07
> +#define IEN_MASK 0x01
> +
> +#define PM_INPUT 0x1
> +#define PM_OUTPUT 0x2
> +
> +#define RZG2L_PIN_ID_TO_PORT(id) ((id) / RZG2L_PINS_PER_PORT)
> +#define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT)
> +
> +struct rzg2l_dedicated_configs {
> + const char *name;
> + unsigned int config;
u32?
> +};
> +
> +struct rzg2l_pinctrl_data {
> + const char * const *port_pins;
> + const unsigned int *port_pin_configs;
u32, to match rzg2l_gpio_configs[]
> + struct rzg2l_dedicated_configs *dedicated_pins;
> + unsigned int n_port_pins;
> + unsigned int n_dedicated_pins;
> +};
> +
> +struct rzg2l_pinctrl {
> + struct pinctrl_dev *pctl;
> + struct pinctrl_desc desc;
> + struct pinctrl_pin_desc *pins;
> +
> + const struct rzg2l_pinctrl_data *data;
> + void __iomem *base;
> + struct device *dev;
> + struct clk *clk;
> +
> + struct gpio_chip gpio_chip;
> + struct pinctrl_gpio_range gpio_range;
> +
> + spinlock_t lock;
> +};
> +
> +static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
> + u8 port, u8 pin, u8 func)
> +{
> + unsigned long flags;
> + u32 reg32;
> + u16 reg16;
> + u8 reg8;
I think you can just use a single "u32 reg" for all register
manipulation.
> +static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
> + struct device_node *np,
> + struct pinctrl_map **map,
> + unsigned int *num_maps,
> + unsigned int *index)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + unsigned long *configs = NULL;
> + unsigned int idx = *index;
> + struct property *pinmux;
> + unsigned int nmaps = *num_maps;
> + struct pinctrl_map *maps = *map;
> + unsigned int num_pins;
> + unsigned int num_configs;
> + unsigned int num_pinmux = 0;
> + unsigned int *pins, *psel_val;
> + int i, ret, gsel, fsel;
unsigned int i;
> + const char **pin_fn;
> + struct property *prop;
> + const char *pin;
[...]
> + maps = krealloc(maps, sizeof(*maps) * nmaps, GFP_KERNEL);
krealloc_array()
> +static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
> + unsigned int _pin,
> + unsigned long *config)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + enum pin_config_param param = pinconf_to_config_param(*config);
> + const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
> + unsigned int *pin_data = pin->drv_data;
> + unsigned int arg = 0;
> + unsigned long flags;
> + void __iomem *addr;
> + u32 port = 0, reg;
> + u32 cfg = 0;
> + u8 bit = 0;
> +
> + if (!pin_data)
> + return -EINVAL;
> +
> + if (*pin_data & RZG2L_DEDICIATED_PIN) {
> + port = RZG2L_DEDICIATED_PIN_GET_PORT(*pin_data);
> + cfg = RZG2L_DEDICIATED_PIN_GET_CFGS(*pin_data);
> + bit = RZG2L_DEDICIATED_PIN_GET_BIT(*pin_data);
> + }
> +
> + switch (param) {
> + case PIN_CONFIG_INPUT_ENABLE:
> + if (!(cfg & PIN_CFG_INPUT_ENABLE))
> + return -EINVAL;
> + spin_lock_irqsave(&pctrl->lock, flags);
> + /* handle _L/_H for 32-bit register read/write */
> + addr = pctrl->base + IEN(port) + ((bit > 3) ? 0x4 : 0x0);
> + if (bit > 3)
> + bit -= 4;
You can combine the two identical tests, and get rid of the 3/4 difference,
at the expense of 2 more lines:
addr = pctrl->base + IEN(port);
if (bit >= 4) {
bit -= 4;
addr += 4;
}
> +
> + reg = readl(addr) & (IEN_MASK << (bit * 8));
> + arg = (reg >> (bit * 8)) & 0x1;
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> +
> + case PIN_CONFIG_POWER_SOURCE:
> + if (!((cfg & PIN_CFG_IO_VOLTAGE_SD0) || (cfg & PIN_CFG_IO_VOLTAGE_SD1)))
> + return -EINVAL;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> + addr = pctrl->base + ((cfg == PIN_CFG_IO_VOLTAGE_SD0) ? SD_CH(0) : SD_CH(1));
> + arg = (readl(addr) & PVDD_MASK) ? 1800 : 3300;
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> +
> + default:
> + return -ENOTSUPP;
EOPNOTSUPP
(Checkpatch doesn't like this one, as it's only for NFSv3, apparently)
> + }
> +
> + *config = pinconf_to_config_packed(param, arg);
> +
> + return 0;
> +};
> +
> +static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
> + unsigned int _pin,
> + unsigned long *_configs,
> + unsigned int num_configs)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
> + unsigned int *pin_data = pin->drv_data;
> + enum pin_config_param param;
> + unsigned long flags;
> + void __iomem *addr;
> + u32 port = 0, reg;
> + unsigned int i;
> + u32 cfg = 0;
> + u8 bit = 0;
> +
> + if (!pin_data)
> + return -EINVAL;
> +
> + if (*pin_data & BIT(31)) {
RZG2L_DEDICATED_PIN
> + port = RZG2L_DEDICIATED_PIN_GET_PORT(*pin_data);
> + cfg = RZG2L_DEDICIATED_PIN_GET_CFGS(*pin_data);
> + bit = RZG2L_DEDICIATED_PIN_GET_BIT(*pin_data);
> + }
> +
> + for (i = 0; i < num_configs; i++) {
> + param = pinconf_to_config_param(_configs[i]);
> + switch (param) {
> + case PIN_CONFIG_INPUT_ENABLE: {
> + unsigned int arg =
> + pinconf_to_config_argument(_configs[i]);
> +
> + if (!(cfg & PIN_CFG_INPUT_ENABLE))
> + return -EINVAL;
> +
> + /* handle _L/_H for 32-bit register read/write */
> + addr = pctrl->base + IEN(port) + ((bit > 3) ? 0x4 : 0x0);
> + if (bit > 3)
> + bit -= 4;
Same here as above.
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> + reg = readl(addr) & ~(IEN_MASK << (bit * 8));
> + writel(reg | (arg << (bit * 8)), addr);
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> + }
> +static struct rzg2l_dedicated_configs rzg2l_dedicated_pins[] = {
> + { "NMI", RZG2L_DEDICIATED_PIN_PACK(0x1, 0, (PIN_CFG_FILONOFF |
> + PIN_CFG_FILNUM |
> + PIN_CFG_FILCLKSEL)) },
I would put all PIN_CFG_* on a single line, for easier review. I.e.
{ "NMI", RZG2L_DEDICIATED_PIN_PACK(0x1, 0,
(PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
PIN_CFG_FILCLKSEL)) },
> + { "TMS/SWDIO", RZG2L_DEDICIATED_PIN_PACK(0x2, 0, (PIN_CFG_SLEW_RATE |
> + PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_INPUT_ENABLE))},
> + { "TDO", RZG2L_DEDICIATED_PIN_PACK(0x3, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE))},
> + { "AUDIO_CLK1", RZG2L_DEDICIATED_PIN_PACK(0x4, 0, PIN_CFG_INPUT_ENABLE)},
> + { "AUDIO_CLK2", RZG2L_DEDICIATED_PIN_PACK(0x4, 1, PIN_CFG_INPUT_ENABLE)},
> + { "SD0_CLK", RZG2L_DEDICIATED_PIN_PACK(0x6, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_CMD", RZG2L_DEDICIATED_PIN_PACK(0x6, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_RST", RZG2L_DEDICIATED_PIN_PACK(0x6, 2, (PIN_CFG_DRIVE_STRENGTH |
"SD0_RST#"?
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA0", RZG2L_DEDICIATED_PIN_PACK(0x7, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA1", RZG2L_DEDICIATED_PIN_PACK(0x7, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA2", RZG2L_DEDICIATED_PIN_PACK(0x7, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA3", RZG2L_DEDICIATED_PIN_PACK(0x7, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA4", RZG2L_DEDICIATED_PIN_PACK(0x7, 4, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA5", RZG2L_DEDICIATED_PIN_PACK(0x7, 5, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA6", RZG2L_DEDICIATED_PIN_PACK(0x7, 6, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA7", RZG2L_DEDICIATED_PIN_PACK(0x7, 7, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD1_CLK", RZG2L_DEDICIATED_PIN_PACK(0x8, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_CMD", RZG2L_DEDICIATED_PIN_PACK(0x8, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA0", RZG2L_DEDICIATED_PIN_PACK(0x9, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA1", RZG2L_DEDICIATED_PIN_PACK(0x9, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA2", RZG2L_DEDICIATED_PIN_PACK(0x9, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA3", RZG2L_DEDICIATED_PIN_PACK(0x9, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "QSPI0_SPCLK", RZG2L_DEDICIATED_PIN_PACK(0xa, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO0", RZG2L_DEDICIATED_PIN_PACK(0xa, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO1", RZG2L_DEDICIATED_PIN_PACK(0xa, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO2", RZG2L_DEDICIATED_PIN_PACK(0xa, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO3", RZG2L_DEDICIATED_PIN_PACK(0xa, 4, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_SSL", RZG2L_DEDICIATED_PIN_PACK(0xa, 5, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_SPCLK", RZG2L_DEDICIATED_PIN_PACK(0xb, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_IO0", RZG2L_DEDICIATED_PIN_PACK(0xb, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_1", RZG2L_DEDICIATED_PIN_PACK(0xb, 2, (PIN_CFG_DRIVE_STRENGTH |
"QSPI1_IO1" (looks like a typo in the User's Manual)
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_IO2", RZG2L_DEDICIATED_PIN_PACK(0xb, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_IO3", RZG2L_DEDICIATED_PIN_PACK(0xb, 4, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_SSL", RZG2L_DEDICIATED_PIN_PACK(0xb, 5, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI_RESET", RZG2L_DEDICIATED_PIN_PACK(0xc, 0, (PIN_CFG_DRIVE_STRENGTH |
"QSPI_RESET#"?
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI_WP", RZG2L_DEDICIATED_PIN_PACK(0xc, 1, (PIN_CFG_DRIVE_STRENGTH |
"QSPI_WP#"?
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI_INT", RZG2L_DEDICIATED_PIN_PACK(0xc, 2, (PIN_CFG_DRIVE_STRENGTH |
"QSPI_INT#"?
This pin does not support drive strength.
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "WDTOVF_PERROUT", RZG2L_DEDICIATED_PIN_PACK(0xd, 0, (PIN_CFG_DRIVE_STRENGTH |
"WDTOVF_PERROUT#"?
> + PIN_CFG_SLEW_RATE))},
> + { "RIIC0_SDA", RZG2L_DEDICIATED_PIN_PACK(0xe, 0, PIN_CFG_INPUT_ENABLE)},
> + { "RIIC0_SCL", RZG2L_DEDICIATED_PIN_PACK(0xe, 1, PIN_CFG_INPUT_ENABLE)},
> + { "RIIC1_SDA", RZG2L_DEDICIATED_PIN_PACK(0xe, 2, PIN_CFG_INPUT_ENABLE)},
> + { "RIIC1_SCL", RZG2L_DEDICIATED_PIN_PACK(0xe, 3, PIN_CFG_INPUT_ENABLE)},
> +};
> +static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
> +{
> + struct pinctrl_pin_desc *pins;
> + unsigned int *pin_data;
u32, to match rzg2l_gpio_configs[]
> + unsigned int i, j;
> + int ret;
> +
> + pctrl->desc.name = DRV_NAME;
> + pctrl->desc.npins = pctrl->data->n_port_pins + pctrl->data->n_dedicated_pins;
> + pctrl->desc.pctlops = &rzg2l_pinctrl_pctlops;
> + pctrl->desc.pmxops = &rzg2l_pinctrl_pmxops;
> + pctrl->desc.confops = &rzg2l_pinctrl_confops;
> + pctrl->desc.owner = THIS_MODULE;
> +
> + pins = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pins), GFP_KERNEL);
> + if (!pins)
> + return -ENOMEM;
> +
> + pin_data = devm_kcalloc(pctrl->dev, pctrl->desc.npins,
> + sizeof(unsigned int), GFP_KERNEL);
sizeof(*pin_data)
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
On Mon, Jul 12, 2021 at 9:44 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> wrote:
>
> Add support for pin and gpio controller driver for RZ/G2L SoC.
>
> Based on a patch in the BSP by Hien Huynh <hien.huynh.px@xxxxxxxxxxx>.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
> drivers/pinctrl/renesas/Kconfig | 11 +
> drivers/pinctrl/renesas/Makefile | 1 +
> drivers/pinctrl/renesas/pinctrl-rzg2l.c | 1196 +++++++++++++++++++++++
> 3 files changed, 1208 insertions(+)
> create mode 100644 drivers/pinctrl/renesas/pinctrl-rzg2l.c
>
> diff --git a/drivers/pinctrl/renesas/Kconfig b/drivers/pinctrl/renesas/Kconfig
> index 4b84a744ae87..16ce795460f2 100644
> --- a/drivers/pinctrl/renesas/Kconfig
> +++ b/drivers/pinctrl/renesas/Kconfig
> @@ -176,6 +176,17 @@ config PINCTRL_RZA2
> help
> This selects GPIO and pinctrl driver for Renesas RZ/A2 platforms.
>
> +config PINCTRL_RZG2L
> + bool "pin control support for RZ/G2L"
> + depends on OF
> + depends on ARCH_R9A07G044 || COMPILE_TEST
> + select GPIOLIB
> + select GENERIC_PINCTRL_GROUPS
> + select GENERIC_PINMUX_FUNCTIONS
> + select GENERIC_PINCONF
> + help
> + This selects GPIO and pinctrl driver for Renesas RZ/G2L platforms.
> +
> config PINCTRL_PFC_R8A77470
> bool "pin control support for RZ/G1C" if COMPILE_TEST
> select PINCTRL_SH_PFC
> diff --git a/drivers/pinctrl/renesas/Makefile b/drivers/pinctrl/renesas/Makefile
> index 353563228dc2..7d9238a9ef57 100644
> --- a/drivers/pinctrl/renesas/Makefile
> +++ b/drivers/pinctrl/renesas/Makefile
> @@ -46,6 +46,7 @@ obj-$(CONFIG_PINCTRL_PFC_SHX3) += pfc-shx3.o
>
> obj-$(CONFIG_PINCTRL_RZA1) += pinctrl-rza1.o
> obj-$(CONFIG_PINCTRL_RZA2) += pinctrl-rza2.o
> +obj-$(CONFIG_PINCTRL_RZG2L) += pinctrl-rzg2l.o
> obj-$(CONFIG_PINCTRL_RZN1) += pinctrl-rzn1.o
>
> ifeq ($(CONFIG_COMPILE_TEST),y)
> diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> new file mode 100644
> index 000000000000..3e786f15d009
> --- /dev/null
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> @@ -0,0 +1,1196 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Renesas RZ/G2L Pin Control and GPIO driver core
> + *
> + * Copyright (C) 2021 Renesas Electronics Corporation.
> + */
> +
> +#include <linux/bitops.h>
> +#include <linux/clk.h>
> +#include <linux/gpio/driver.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/pinctrl/pinconf-generic.h>
> +#include <linux/pinctrl/pinconf.h>
> +#include <linux/pinctrl/pinctrl.h>
> +#include <linux/pinctrl/pinmux.h>
> +#include <linux/spinlock.h>
> +
> +#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
> +
> +#include "../core.h"
> +#include "../pinconf.h"
> +#include "../pinmux.h"
> +
> +#define DRV_NAME "pinctrl-rzg2l"
> +
> +/*
> + * Use 16 lower bits [15:0] for pin identifier
> + * Use 16 higher bits [31:16] for pin mux function
> + */
> +#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_DRIVE_STRENGTH BIT(0)
> +#define PIN_CFG_SLEW_RATE BIT(1)
> +#define PIN_CFG_INPUT_ENABLE BIT(2)
> +#define PIN_CFG_PULL_UP_DOWN BIT(3)
> +#define PIN_CFG_IO_VOLTAGE_SD0 BIT(4)
> +#define PIN_CFG_IO_VOLTAGE_SD1 BIT(5)
> +#define PIN_CFG_IO_VOLTAGE_QSPI BIT(6)
> +#define PIN_CFG_IO_VOLTAGE_ETH0 BIT(7)
> +#define PIN_CFG_IO_VOLTAGE_ETH1 BIT(8)
> +#define PIN_CFG_FILONOFF BIT(9)
> +#define PIN_CFG_FILNUM BIT(10)
> +#define PIN_CFG_FILCLKSEL BIT(11)
> +
> +#define RZG2L_MULTIPLEXED_PIN_FUNCS (PIN_CFG_DRIVE_STRENGTH | \
> + PIN_CFG_SLEW_RATE | \
> + PIN_CFG_PULL_UP_DOWN | \
> + PIN_CFG_FILONOFF | \
> + PIN_CFG_FILNUM | \
> + PIN_CFG_FILCLKSEL)
> +
> +#define RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(x) ((x) | \
> + PIN_CFG_FILONOFF | \
> + PIN_CFG_FILNUM | \
> + PIN_CFG_FILCLKSEL)
> +
> +/*
> + * 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(28, 0)) >> 28) & 0x7)
> +#define RZG2L_GPIO_PORT_GET_INDEX(x) ((((x) & ~GENMASK(19, 0) & ~GENMASK(31, 28)) >> 20) & 0x7f)
> +#define RZG2L_GPIO_PORT_GET_CFGS(x) ((x) & ~GENMASK(31, 20))
> +
> +/*
> + * BIT(31) indicates as dedicated pin, p is the register index while
> + * referencing to SR/IEN/IOLH/FILxx registers, b is the register bits
> + * (b * 8) and f is the pin configuration capabilities supported.
> + */
> +#define RZG2L_DEDICIATED_PIN BIT(31)
> +#define RZG2L_DEDICIATED_PIN_PACK(p, b, f) (RZG2L_DEDICIATED_PIN | \
> + ((p) << 24) | ((b) << 20) | (f))
> +#define RZG2L_DEDICIATED_PIN_GET_PORT(x) ((((x) & ~GENMASK(23, 0)) >> 24) & 0x7f)
> +#define RZG2L_DEDICIATED_PIN_GET_BIT(x) ((((x) & ~GENMASK(19, 0)) >> 20) & 0x7)
> +#define RZG2L_DEDICIATED_PIN_GET_CFGS(x) ((x) & ~GENMASK(31, 20))
> +
> +#define P(n) (0x0000 + 0x10 + (n))
> +#define PM(n) (0x0100 + 0x20 + (n) * 2)
> +#define PMC(n) (0x0200 + 0x10 + (n))
> +#define PFC(n) (0x0400 + 0x40 + (n) * 4)
> +#define PIN(n) (0x0800 + 0x10 + (n))
> +#define IEN(n) (0x1800 + (n) * 8)
> +#define PWPR (0x3014)
> +#define SD_CH(n) (0x3000 + (n) * 4)
> +
> +#define PVDD_1800 1 /* I/O domain voltage <= 1.8V */
> +#define PVDD_3300 0 /* I/O domain voltage >= 3.3V */
> +
> +#define PWPR_B0WI BIT(7) /* Bit Write Disable */
> +#define PWPR_PFCWE BIT(6) /* PFC Register Write Enable */
> +
> +#define PM_MASK 0x03
> +#define PVDD_MASK 0x01
> +#define PFC_MASK 0x07
> +#define IEN_MASK 0x01
> +
> +#define PM_INPUT 0x1
> +#define PM_OUTPUT 0x2
> +
> +#define RZG2L_PIN_ID_TO_PORT(id) ((id) / RZG2L_PINS_PER_PORT)
> +#define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT)
> +
> +struct rzg2l_dedicated_configs {
> + const char *name;
> + unsigned int config;
> +};
> +
> +struct rzg2l_pinctrl_data {
> + const char * const *port_pins;
> + const unsigned int *port_pin_configs;
> + struct rzg2l_dedicated_configs *dedicated_pins;
> + unsigned int n_port_pins;
> + unsigned int n_dedicated_pins;
> +};
> +
> +struct rzg2l_pinctrl {
> + struct pinctrl_dev *pctl;
> + struct pinctrl_desc desc;
> + struct pinctrl_pin_desc *pins;
> +
> + const struct rzg2l_pinctrl_data *data;
> + void __iomem *base;
> + struct device *dev;
> + struct clk *clk;
> +
> + struct gpio_chip gpio_chip;
> + struct pinctrl_gpio_range gpio_range;
> +
> + spinlock_t lock;
> +};
> +
> +static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
> + u8 port, u8 pin, u8 func)
> +{
> + unsigned long flags;
> + u32 reg32;
> + u16 reg16;
> + u8 reg8;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> +
> + /* Set pin to 'Non-use (Hi-Z input protection)' */
> + reg16 = readw(pctrl->base + PM(port));
> + reg16 &= ~(PM_MASK << (pin * 2));
> + writew(reg16, pctrl->base + PM(port));
> +
> + /* Temporarily switch to GPIO mode with PMC register */
> + reg8 = readb(pctrl->base + PMC(port));
> + writeb(reg8 & ~BIT(pin), pctrl->base + PMC(port));
> +
> + /* Set the PWPR register to allow PFC register to write */
> + writel(0x0, pctrl->base + PWPR); /* B0WI=0, PFCWE=0 */
> + writel(PWPR_PFCWE, pctrl->base + PWPR); /* B0WI=0, PFCWE=1 */
> +
> + /* Select Pin function mode with PFC register */
> + reg32 = readl(pctrl->base + PFC(port));
> + reg32 &= ~(PFC_MASK << (pin * 4));
> + writel(reg32 | (func << (pin * 4)), pctrl->base + PFC(port));
> +
> + /* Set the PWPR register to be write-protected */
> + writel(0x0, pctrl->base + PWPR); /* B0WI=0, PFCWE=0 */
> + writel(PWPR_B0WI, pctrl->base + PWPR); /* B0WI=1, PFCWE=0 */
> +
> + /* Switch to Peripheral pin function with PMC register */
> + reg8 = readb(pctrl->base + PMC(port));
> + writeb(reg8 | BIT(pin), pctrl->base + PMC(port));
> +
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> +};
> +
> +static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
> + unsigned int func_selector,
> + unsigned int group_selector)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + struct function_desc *func;
> + unsigned int i, *psel_val;
> + struct group_desc *group;
> + unsigned long data;
> + int *pins;
> +
> + func = pinmux_generic_get_function(pctldev, func_selector);
> + if (!func)
> + return -EINVAL;
> + group = pinctrl_generic_get_group(pctldev, group_selector);
> + if (!group)
> + return -EINVAL;
> +
> + psel_val = func->data;
> + pins = group->pins;
> + data = (unsigned long)group->data;
> +
> + for (i = 0; i < group->num_pins; i++) {
> + dev_dbg(pctrl->dev, "port:%u pin: %u PSEL:%u\n",
> + RZG2L_PIN_ID_TO_PORT(pins[i]), RZG2L_PIN_ID_TO_PIN(pins[i]),
> + psel_val[i]);
> + rzg2l_pinctrl_set_pfc_mode(pctrl, RZG2L_PIN_ID_TO_PORT(pins[i]),
> + RZG2L_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
> + }
> +
> + return 0;
> +};
> +
> +static int rzg2l_map_add_config(struct pinctrl_map *map,
> + const char *group_or_pin,
> + enum pinctrl_map_type type,
> + unsigned long *configs,
> + unsigned int num_configs)
> +{
> + unsigned long *cfgs;
> +
> + cfgs = kmemdup(configs, num_configs * sizeof(*cfgs),
> + GFP_KERNEL);
> + if (!cfgs)
> + return -ENOMEM;
> +
> + map->type = type;
> + map->data.configs.group_or_pin = group_or_pin;
> + map->data.configs.configs = cfgs;
> + map->data.configs.num_configs = num_configs;
> +
> + return 0;
> +}
> +
> +static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
> + struct device_node *np,
> + struct pinctrl_map **map,
> + unsigned int *num_maps,
> + unsigned int *index)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + unsigned long *configs = NULL;
> + unsigned int idx = *index;
> + struct property *pinmux;
> + unsigned int nmaps = *num_maps;
> + struct pinctrl_map *maps = *map;
> + unsigned int num_pins;
> + unsigned int num_configs;
> + unsigned int num_pinmux = 0;
> + unsigned int *pins, *psel_val;
> + int i, ret, gsel, fsel;
> + const char **pin_fn;
> + struct property *prop;
> + const char *pin;
> +
> + pinmux = of_find_property(np, "pinmux", NULL);
> + if (pinmux)
> + num_pinmux = pinmux->length / sizeof(u32);
> +
> + ret = of_property_count_strings(np, "pins");
> + if (ret == -EINVAL) {
> + num_pins = 0;
> + } else if (ret < 0) {
> + dev_err(pctrl->dev, "Invalid pins list in DT\n");
> + return ret;
> + } else {
> + num_pins = ret;
> + }
> +
> + if (!num_pinmux && !num_pins)
> + return 0;
> +
> + if (num_pinmux && num_pins) {
> + dev_err(pctrl->dev,
> + "DT node must contain either a pinmux or pins and not both\n");
> + return -EINVAL;
> + }
> +
> + ret = pinconf_generic_parse_dt_config(np, NULL, &configs, &num_configs);
> + if (ret < 0)
> + return ret;
> +
> + if (num_pins && !num_configs) {
> + dev_err(pctrl->dev, "DT node must contain a config\n");
> + ret = -ENODEV;
> + goto done;
> + }
> +
> + if (num_pinmux)
> + nmaps += 1;
> +
> + if (num_pins)
> + nmaps += num_pins;
> +
> + maps = krealloc(maps, sizeof(*maps) * nmaps, GFP_KERNEL);
> + if (!maps) {
> + ret = -ENOMEM;
> + goto done;
> + }
> +
> + *map = maps;
> + *num_maps = nmaps;
> + if (num_pins) {
> + of_property_for_each_string(np, "pins", prop, pin) {
> + ret = rzg2l_map_add_config(&maps[idx], pin,
> + PIN_MAP_TYPE_CONFIGS_PIN,
> + configs, num_configs);
> + if (ret < 0)
> + goto done;
> +
> + idx++;
> + }
> + ret = 0;
> + goto done;
> + }
> +
> + pins = devm_kcalloc(pctrl->dev, num_pinmux, sizeof(*pins), GFP_KERNEL);
> + psel_val = devm_kcalloc(pctrl->dev, num_pinmux, sizeof(*psel_val),
> + GFP_KERNEL);
> + pin_fn = devm_kzalloc(pctrl->dev, sizeof(*pin_fn), GFP_KERNEL);
> + if (!pins || !psel_val || !pin_fn) {
> + ret = -ENOMEM;
> + goto done;
> + }
> +
> + /* Collect pin locations and mux settings from DT properties */
> + for (i = 0; i < num_pinmux; ++i) {
> + u32 value;
> +
> + 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);
> + }
> +
> + /* Register a single pin group listing all the pins we read from DT */
> + gsel = pinctrl_generic_add_group(pctldev, np->name, pins, num_pinmux, NULL);
> + if (gsel < 0) {
> + ret = gsel;
> + goto done;
> + }
> +
> + /*
> + * Register a single group function where the 'data' is an array PSEL
> + * register values read from DT.
> + */
> + pin_fn[0] = np->name;
> + fsel = pinmux_generic_add_function(pctldev, np->name, pin_fn, 1,
> + psel_val);
> + if (fsel < 0) {
> + ret = fsel;
> + goto remove_group;
> + }
> +
> + maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
> + maps[idx].data.mux.group = np->name;
> + maps[idx].data.mux.function = np->name;
> + idx++;
> +
> + dev_dbg(pctrl->dev, "Parsed %pOF with %d pins\n", np, num_pinmux);
> + ret = 0;
> + goto done;
> +
> +remove_group:
> + pinctrl_generic_remove_group(pctldev, gsel);
> +done:
> + *index = idx;
> + kfree(configs);
> + return ret;
> +}
> +
> +static void rzg2l_dt_free_map(struct pinctrl_dev *pctldev,
> + struct pinctrl_map *map,
> + unsigned int num_maps)
> +{
> + unsigned int i;
> +
> + if (!map)
> + return;
> +
> + for (i = 0; i < num_maps; ++i) {
> + if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP ||
> + map[i].type == PIN_MAP_TYPE_CONFIGS_PIN)
> + kfree(map[i].data.configs.configs);
> + }
> + kfree(map);
> +}
> +
> +static int rzg2l_dt_node_to_map(struct pinctrl_dev *pctldev,
> + struct device_node *np,
> + struct pinctrl_map **map,
> + unsigned int *num_maps)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + struct device_node *child;
> + unsigned int index;
> + int ret;
> +
> + *map = NULL;
> + *num_maps = 0;
> + index = 0;
> +
> + for_each_child_of_node(np, child) {
> + ret = rzg2l_dt_subnode_to_map(pctldev, child, map,
> + num_maps, &index);
> + if (ret < 0) {
> + of_node_put(child);
> + goto done;
> + }
> + }
> +
> + if (*num_maps == 0) {
> + ret = rzg2l_dt_subnode_to_map(pctldev, np, map,
> + num_maps, &index);
> + if (ret < 0)
> + goto done;
> + }
> +
> + if (*num_maps)
> + return 0;
> +
> + dev_err(pctrl->dev, "no mapping found in node %pOF\n", np);
> + ret = -EINVAL;
> +
> +done:
> + if (ret < 0)
> + rzg2l_dt_free_map(pctldev, *map, *num_maps);
> +
> + return ret;
> +}
> +
> +static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
> + unsigned int _pin,
> + unsigned long *config)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + enum pin_config_param param = pinconf_to_config_param(*config);
> + const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
> + unsigned int *pin_data = pin->drv_data;
> + unsigned int arg = 0;
> + unsigned long flags;
> + void __iomem *addr;
> + u32 port = 0, reg;
> + u32 cfg = 0;
> + u8 bit = 0;
> +
> + if (!pin_data)
> + return -EINVAL;
> +
> + if (*pin_data & RZG2L_DEDICIATED_PIN) {
> + port = RZG2L_DEDICIATED_PIN_GET_PORT(*pin_data);
> + cfg = RZG2L_DEDICIATED_PIN_GET_CFGS(*pin_data);
> + bit = RZG2L_DEDICIATED_PIN_GET_BIT(*pin_data);
> + }
> +
> + switch (param) {
> + case PIN_CONFIG_INPUT_ENABLE:
> + if (!(cfg & PIN_CFG_INPUT_ENABLE))
> + return -EINVAL;
> + spin_lock_irqsave(&pctrl->lock, flags);
> + /* handle _L/_H for 32-bit register read/write */
> + addr = pctrl->base + IEN(port) + ((bit > 3) ? 0x4 : 0x0);
> + if (bit > 3)
> + bit -= 4;
> +
> + reg = readl(addr) & (IEN_MASK << (bit * 8));
> + arg = (reg >> (bit * 8)) & 0x1;
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> +
> + case PIN_CONFIG_POWER_SOURCE:
> + if (!((cfg & PIN_CFG_IO_VOLTAGE_SD0) || (cfg & PIN_CFG_IO_VOLTAGE_SD1)))
> + return -EINVAL;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> + addr = pctrl->base + ((cfg == PIN_CFG_IO_VOLTAGE_SD0) ? SD_CH(0) : SD_CH(1));
> + arg = (readl(addr) & PVDD_MASK) ? 1800 : 3300;
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> +
> + default:
> + return -ENOTSUPP;
> + }
> +
> + *config = pinconf_to_config_packed(param, arg);
> +
> + return 0;
> +};
> +
> +static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
> + unsigned int _pin,
> + unsigned long *_configs,
> + unsigned int num_configs)
> +{
> + struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> + const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
> + unsigned int *pin_data = pin->drv_data;
> + enum pin_config_param param;
> + unsigned long flags;
> + void __iomem *addr;
> + u32 port = 0, reg;
> + unsigned int i;
> + u32 cfg = 0;
> + u8 bit = 0;
> +
> + if (!pin_data)
> + return -EINVAL;
> +
> + if (*pin_data & BIT(31)) {
> + port = RZG2L_DEDICIATED_PIN_GET_PORT(*pin_data);
> + cfg = RZG2L_DEDICIATED_PIN_GET_CFGS(*pin_data);
> + bit = RZG2L_DEDICIATED_PIN_GET_BIT(*pin_data);
> + }
> +
> + for (i = 0; i < num_configs; i++) {
> + param = pinconf_to_config_param(_configs[i]);
> + switch (param) {
> + case PIN_CONFIG_INPUT_ENABLE: {
> + unsigned int arg =
> + pinconf_to_config_argument(_configs[i]);
> +
> + if (!(cfg & PIN_CFG_INPUT_ENABLE))
> + return -EINVAL;
> +
> + /* handle _L/_H for 32-bit register read/write */
> + addr = pctrl->base + IEN(port) + ((bit > 3) ? 0x4 : 0x0);
> + if (bit > 3)
> + bit -= 4;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> + reg = readl(addr) & ~(IEN_MASK << (bit * 8));
> + writel(reg | (arg << (bit * 8)), addr);
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> + }
> +
> + case PIN_CONFIG_POWER_SOURCE: {
> + unsigned int mV = pinconf_to_config_argument(_configs[i]);
> +
> + if (mV != 1800 && mV != 3300)
> + return -EINVAL;
> +
> + if (!(cfg & PIN_CFG_IO_VOLTAGE_SD0 || cfg & PIN_CFG_IO_VOLTAGE_SD1))
> + return -EINVAL;
> +
> + addr = pctrl->base + ((cfg == PIN_CFG_IO_VOLTAGE_SD0) ?
> + SD_CH(0) : SD_CH(1));
> + spin_lock_irqsave(&pctrl->lock, flags);
> + writel((mV == 1800) ? PVDD_1800 : PVDD_3300, addr);
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> + break;
> + }
> + default:
> + return -EOPNOTSUPP;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int rzg2l_pinctrl_pinconf_group_set(struct pinctrl_dev *pctldev,
> + unsigned int group,
> + unsigned long *configs,
> + unsigned int num_configs)
> +{
> + const unsigned int *pins;
> + unsigned int i, npins;
> + int ret;
> +
> + ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);
> + if (ret)
> + return ret;
> +
> + for (i = 0; i < npins; i++) {
> + ret = rzg2l_pinctrl_pinconf_set(pctldev, pins[i], configs,
> + num_configs);
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> +};
> +
> +static int rzg2l_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
> + unsigned int group,
> + unsigned long *config)
> +{
> + const unsigned int *pins;
> + unsigned int i, npins, prev_config = 0;
> + int ret;
> +
> + ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);
> + if (ret)
> + return ret;
> +
> + for (i = 0; i < npins; i++) {
> + ret = rzg2l_pinctrl_pinconf_get(pctldev, pins[i], config);
> + if (ret)
> + return ret;
> +
> + /* Check config matching between to pin */
> + if (i && prev_config != *config)
> + return -EOPNOTSUPP;
> +
> + prev_config = *config;
> + }
> +
> + return 0;
> +};
> +
> +static const struct pinctrl_ops rzg2l_pinctrl_pctlops = {
> + .get_groups_count = pinctrl_generic_get_group_count,
> + .get_group_name = pinctrl_generic_get_group_name,
> + .get_group_pins = pinctrl_generic_get_group_pins,
> + .dt_node_to_map = rzg2l_dt_node_to_map,
> + .dt_free_map = rzg2l_dt_free_map,
> +};
> +
> +static const struct pinmux_ops rzg2l_pinctrl_pmxops = {
> + .get_functions_count = pinmux_generic_get_function_count,
> + .get_function_name = pinmux_generic_get_function_name,
> + .get_function_groups = pinmux_generic_get_function_groups,
> + .set_mux = rzg2l_pinctrl_set_mux,
> + .strict = true,
> +};
> +
> +static const struct pinconf_ops rzg2l_pinctrl_confops = {
> + .is_generic = true,
> + .pin_config_get = rzg2l_pinctrl_pinconf_get,
> + .pin_config_set = rzg2l_pinctrl_pinconf_set,
> + .pin_config_group_set = rzg2l_pinctrl_pinconf_group_set,
> + .pin_config_group_get = rzg2l_pinctrl_pinconf_group_get,
> + .pin_config_config_dbg_show = pinconf_generic_dump_config,
> +};
> +
> +static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
> +{
> + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> + u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> + unsigned long flags;
> + u8 reg8;
> + int ret;
> +
> + ret = pinctrl_gpio_request(chip->base + offset);
> + if (ret)
> + return ret;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> +
> + /* Select GPIO mode in PMC Register */
> + reg8 = readb(pctrl->base + PMC(port));
> + reg8 &= ~BIT(bit);
> + writeb(reg8, pctrl->base + PMC(port));
> +
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> +
> + return 0;
> +}
> +
> +static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 port,
> + u8 bit, bool output)
> +{
> + unsigned long flags;
> + u16 reg16;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> +
> + reg16 = readw(pctrl->base + PM(port));
> + reg16 &= ~(PM_MASK << (bit * 2));
> +
> + reg16 |= (output ? PM_OUTPUT : PM_INPUT) << (bit * 2);
> + writew(reg16, pctrl->base + PM(port));
> +
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> +}
> +
> +static int rzg2l_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
> +{
> + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> + u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> +
> + if (!(readb(pctrl->base + PMC(port)) & BIT(bit))) {
> + u16 reg16;
> +
> + reg16 = readw(pctrl->base + PM(port));
> + reg16 = (reg16 >> (bit * 2)) & PM_MASK;
> + if (reg16 == PM_OUTPUT)
> + return GPIO_LINE_DIRECTION_OUT;
> + }
> +
> + return GPIO_LINE_DIRECTION_IN;
> +}
> +
> +static int rzg2l_gpio_direction_input(struct gpio_chip *chip,
> + unsigned int offset)
> +{
> + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> + u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> +
> + rzg2l_gpio_set_direction(pctrl, port, bit, false);
> +
> + return 0;
> +}
> +
> +static void rzg2l_gpio_set(struct gpio_chip *chip, unsigned int offset,
> + int value)
> +{
> + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> + u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> + unsigned long flags;
> + u8 reg8;
> +
> + spin_lock_irqsave(&pctrl->lock, flags);
> +
> + reg8 = readb(pctrl->base + P(port));
> +
> + if (value)
> + writeb(reg8 | BIT(bit), pctrl->base + P(port));
> + else
> + writeb(reg8 & ~BIT(bit), pctrl->base + P(port));
> +
> + spin_unlock_irqrestore(&pctrl->lock, flags);
> +}
> +
> +static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
> + unsigned int offset, int value)
> +{
> + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> + u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> +
> + rzg2l_gpio_set(chip, offset, value);
> + rzg2l_gpio_set_direction(pctrl, port, bit, true);
> +
> + return 0;
> +}
> +
> +static int rzg2l_gpio_get(struct gpio_chip *chip, unsigned int offset)
> +{
> + struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
> + u32 port = RZG2L_PIN_ID_TO_PORT(offset);
> + u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
> + u16 reg16;
> +
> + reg16 = readw(pctrl->base + PM(port));
> + reg16 = (reg16 >> (bit * 2)) & PM_MASK;
> +
> + if (reg16 == PM_INPUT)
> + return !!(readb(pctrl->base + PIN(port)) & BIT(bit));
> + else if (reg16 == PM_OUTPUT)
> + return !!(readb(pctrl->base + P(port)) & BIT(bit));
> + else
> + return -EINVAL;
> +}
> +
> +static void rzg2l_gpio_free(struct gpio_chip *chip, unsigned int offset)
> +{
> + pinctrl_gpio_free(chip->base + offset);
> +
> + /*
> + * Set the GPIO as an input to ensure that the next GPIO request won't
> + * drive the GPIO pin as an output.
> + */
> + rzg2l_gpio_direction_input(chip, offset);
> +}
> +
> +static const char * const rzg2l_gpio_names[] = {
> + "P0_0", "P0_1", "P0_2", "P0_3", "P0_4", "P0_5", "P0_6", "P0_7",
> + "P1_0", "P1_1", "P1_2", "P1_3", "P1_4", "P1_5", "P1_6", "P1_7",
> + "P2_0", "P2_1", "P2_2", "P2_3", "P2_4", "P2_5", "P2_6", "P2_7",
> + "P3_0", "P3_1", "P3_2", "P3_3", "P3_4", "P3_5", "P3_6", "P3_7",
> + "P4_0", "P4_1", "P4_2", "P4_3", "P4_4", "P4_5", "P4_6", "P4_7",
> + "P5_0", "P5_1", "P5_2", "P5_3", "P5_4", "P5_5", "P5_6", "P5_7",
> + "P6_0", "P6_1", "P6_2", "P6_3", "P6_4", "P6_5", "P6_6", "P6_7",
> + "P7_0", "P7_1", "P7_2", "P7_3", "P7_4", "P7_5", "P7_6", "P7_7",
> + "P8_0", "P8_1", "P8_2", "P8_3", "P8_4", "P8_5", "P8_6", "P8_7",
> + "P9_0", "P9_1", "P9_2", "P9_3", "P9_4", "P9_5", "P9_6", "P9_7",
> + "P10_0", "P10_1", "P10_2", "P10_3", "P10_4", "P10_5", "P10_6", "P10_7",
> + "P11_0", "P11_1", "P11_2", "P11_3", "P11_4", "P11_5", "P11_6", "P11_7",
> + "P12_0", "P12_1", "P12_2", "P12_3", "P12_4", "P12_5", "P12_6", "P12_7",
> + "P13_0", "P13_1", "P13_2", "P13_3", "P13_4", "P13_5", "P13_6", "P13_7",
> + "P14_0", "P14_1", "P14_2", "P14_3", "P14_4", "P14_5", "P14_6", "P14_7",
> + "P15_0", "P15_1", "P15_2", "P15_3", "P15_4", "P15_5", "P15_6", "P15_7",
> + "P16_0", "P16_1", "P16_2", "P16_3", "P16_4", "P16_5", "P16_6", "P16_7",
> + "P17_0", "P17_1", "P17_2", "P17_3", "P17_4", "P17_5", "P17_6", "P17_7",
> + "P18_0", "P18_1", "P18_2", "P18_3", "P18_4", "P18_5", "P18_6", "P18_7",
> + "P19_0", "P19_1", "P19_2", "P19_3", "P19_4", "P19_5", "P19_6", "P19_7",
> + "P20_0", "P20_1", "P20_2", "P20_3", "P20_4", "P20_5", "P20_6", "P20_7",
> + "P21_0", "P21_1", "P21_2", "P21_3", "P21_4", "P21_5", "P21_6", "P21_7",
> + "P22_0", "P22_1", "P22_2", "P22_3", "P22_4", "P22_5", "P22_6", "P22_7",
> + "P23_0", "P23_1", "P23_2", "P23_3", "P23_4", "P23_5", "P23_6", "P23_7",
> + "P24_0", "P24_1", "P24_2", "P24_3", "P24_4", "P24_5", "P24_6", "P24_7",
> + "P25_0", "P25_1", "P25_2", "P25_3", "P25_4", "P25_5", "P25_6", "P25_7",
> + "P26_0", "P26_1", "P26_2", "P26_3", "P26_4", "P26_5", "P26_6", "P26_7",
> + "P27_0", "P27_1", "P27_2", "P27_3", "P27_4", "P27_5", "P27_6", "P27_7",
> + "P28_0", "P28_1", "P28_2", "P28_3", "P28_4", "P28_5", "P28_6", "P28_7",
> + "P29_0", "P29_1", "P29_2", "P29_3", "P29_4", "P29_5", "P29_6", "P29_7",
> + "P30_0", "P30_1", "P30_2", "P30_3", "P30_4", "P30_5", "P30_6", "P30_7",
> + "P31_0", "P31_1", "P31_2", "P31_3", "P31_4", "P31_5", "P31_6", "P31_7",
> + "P32_0", "P32_1", "P32_2", "P32_3", "P32_4", "P32_5", "P32_6", "P32_7",
> + "P33_0", "P33_1", "P33_2", "P33_3", "P33_4", "P33_5", "P33_6", "P33_7",
> + "P34_0", "P34_1", "P34_2", "P34_3", "P34_4", "P34_5", "P34_6", "P34_7",
> + "P35_0", "P35_1", "P35_2", "P35_3", "P35_4", "P35_5", "P35_6", "P35_7",
> + "P36_0", "P36_1", "P36_2", "P36_3", "P36_4", "P36_5", "P36_6", "P36_7",
> + "P37_0", "P37_1", "P37_2", "P37_3", "P37_4", "P37_5", "P37_6", "P37_7",
> + "P38_0", "P38_1", "P38_2", "P38_3", "P38_4", "P38_5", "P38_6", "P38_7",
> + "P39_0", "P39_1", "P39_2", "P39_3", "P39_4", "P39_5", "P39_6", "P39_7",
> + "P40_0", "P40_1", "P40_2", "P40_3", "P40_4", "P40_5", "P40_6", "P40_7",
> + "P41_0", "P41_1", "P41_2", "P41_3", "P41_4", "P41_5", "P41_6", "P41_7",
> + "P42_0", "P42_1", "P42_2", "P42_3", "P42_4", "P42_5", "P42_6", "P42_7",
> + "P43_0", "P43_1", "P43_2", "P43_3", "P43_4", "P43_5", "P43_6", "P43_7",
> + "P44_0", "P44_1", "P44_2", "P44_3", "P44_4", "P44_5", "P44_6", "P44_7",
> + "P45_0", "P45_1", "P45_2", "P45_3", "P45_4", "P45_5", "P45_6", "P45_7",
> + "P46_0", "P46_1", "P46_2", "P46_3", "P46_4", "P46_5", "P46_6", "P46_7",
> + "P47_0", "P47_1", "P47_2", "P47_3", "P47_4", "P47_5", "P47_6", "P47_7",
> + "P48_0", "P48_1", "P48_2", "P48_3", "P48_4", "P48_5", "P48_6", "P48_7",
> +};
> +
> +static const u32 rzg2l_gpio_configs[] = {
> + RZG2L_GPIO_PORT_PACK(2, 0x10, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x11, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x12, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x13, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x14, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x15, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x16, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x17, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x18, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x19, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x1a, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x1b, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x1c, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x1d, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x1e, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x1f, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x20, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x22, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x22, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x23, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x24, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x25, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x26, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x27, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x28, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x29, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x2a, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x2b, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x2c, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH0)),
> + RZG2L_GPIO_PORT_PACK(2, 0x2d, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x2e, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x2f, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x30, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x31, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x32, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x33, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x34, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(3, 0x35, RZG2L_MULTIPLEXED_ETH_PIN_FUNCS(PIN_CFG_IO_VOLTAGE_ETH1)),
> + RZG2L_GPIO_PORT_PACK(2, 0x36, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x37, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(3, 0x38, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(2, 0x39, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(5, 0x3a, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(4, 0x3b, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(4, 0x3c, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(4, 0x3d, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(4, 0x3e, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(4, 0x3f, RZG2L_MULTIPLEXED_PIN_FUNCS),
> + RZG2L_GPIO_PORT_PACK(5, 0x40, RZG2L_MULTIPLEXED_PIN_FUNCS),
> +};
> +
> +static struct rzg2l_dedicated_configs rzg2l_dedicated_pins[] = {
> + { "NMI", RZG2L_DEDICIATED_PIN_PACK(0x1, 0, (PIN_CFG_FILONOFF |
> + PIN_CFG_FILNUM |
> + PIN_CFG_FILCLKSEL)) },
> + { "TMS/SWDIO", RZG2L_DEDICIATED_PIN_PACK(0x2, 0, (PIN_CFG_SLEW_RATE |
> + PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_INPUT_ENABLE))},
> + { "TDO", RZG2L_DEDICIATED_PIN_PACK(0x3, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE))},
> + { "AUDIO_CLK1", RZG2L_DEDICIATED_PIN_PACK(0x4, 0, PIN_CFG_INPUT_ENABLE)},
> + { "AUDIO_CLK2", RZG2L_DEDICIATED_PIN_PACK(0x4, 1, PIN_CFG_INPUT_ENABLE)},
> + { "SD0_CLK", RZG2L_DEDICIATED_PIN_PACK(0x6, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_CMD", RZG2L_DEDICIATED_PIN_PACK(0x6, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_RST", RZG2L_DEDICIATED_PIN_PACK(0x6, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA0", RZG2L_DEDICIATED_PIN_PACK(0x7, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA1", RZG2L_DEDICIATED_PIN_PACK(0x7, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA2", RZG2L_DEDICIATED_PIN_PACK(0x7, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA3", RZG2L_DEDICIATED_PIN_PACK(0x7, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA4", RZG2L_DEDICIATED_PIN_PACK(0x7, 4, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA5", RZG2L_DEDICIATED_PIN_PACK(0x7, 5, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA6", RZG2L_DEDICIATED_PIN_PACK(0x7, 6, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD0_DATA7", RZG2L_DEDICIATED_PIN_PACK(0x7, 7, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD0))},
> + { "SD1_CLK", RZG2L_DEDICIATED_PIN_PACK(0x8, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_CMD", RZG2L_DEDICIATED_PIN_PACK(0x8, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA0", RZG2L_DEDICIATED_PIN_PACK(0x9, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA1", RZG2L_DEDICIATED_PIN_PACK(0x9, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA2", RZG2L_DEDICIATED_PIN_PACK(0x9, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "SD1_DATA3", RZG2L_DEDICIATED_PIN_PACK(0x9, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_INPUT_ENABLE |
> + PIN_CFG_IO_VOLTAGE_SD1))},
> + { "QSPI0_SPCLK", RZG2L_DEDICIATED_PIN_PACK(0xa, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO0", RZG2L_DEDICIATED_PIN_PACK(0xa, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO1", RZG2L_DEDICIATED_PIN_PACK(0xa, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO2", RZG2L_DEDICIATED_PIN_PACK(0xa, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_IO3", RZG2L_DEDICIATED_PIN_PACK(0xa, 4, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI0_SSL", RZG2L_DEDICIATED_PIN_PACK(0xa, 5, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_SPCLK", RZG2L_DEDICIATED_PIN_PACK(0xb, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_IO0", RZG2L_DEDICIATED_PIN_PACK(0xb, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_1", RZG2L_DEDICIATED_PIN_PACK(0xb, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_IO2", RZG2L_DEDICIATED_PIN_PACK(0xb, 3, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_IO3", RZG2L_DEDICIATED_PIN_PACK(0xb, 4, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI1_SSL", RZG2L_DEDICIATED_PIN_PACK(0xb, 5, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI_RESET", RZG2L_DEDICIATED_PIN_PACK(0xc, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI_WP", RZG2L_DEDICIATED_PIN_PACK(0xc, 1, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "QSPI_INT", RZG2L_DEDICIATED_PIN_PACK(0xc, 2, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE |
> + PIN_CFG_IO_VOLTAGE_QSPI))},
> + { "WDTOVF_PERROUT", RZG2L_DEDICIATED_PIN_PACK(0xd, 0, (PIN_CFG_DRIVE_STRENGTH |
> + PIN_CFG_SLEW_RATE))},
> + { "RIIC0_SDA", RZG2L_DEDICIATED_PIN_PACK(0xe, 0, PIN_CFG_INPUT_ENABLE)},
> + { "RIIC0_SCL", RZG2L_DEDICIATED_PIN_PACK(0xe, 1, PIN_CFG_INPUT_ENABLE)},
> + { "RIIC1_SDA", RZG2L_DEDICIATED_PIN_PACK(0xe, 2, PIN_CFG_INPUT_ENABLE)},
> + { "RIIC1_SCL", RZG2L_DEDICIATED_PIN_PACK(0xe, 3, PIN_CFG_INPUT_ENABLE)},
> +};
> +
> +static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
> +{
> + struct device_node *np = pctrl->dev->of_node;
> + struct gpio_chip *chip = &pctrl->gpio_chip;
> + const char *name = dev_name(pctrl->dev);
> + struct of_phandle_args of_args;
> + int ret;
> +
> + ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &of_args);
> + if (ret) {
> + dev_err(pctrl->dev, "Unable to parse gpio-ranges\n");
> + return ret;
> + }
> +
> + if (of_args.args[0] != 0 || of_args.args[1] != 0 ||
> + of_args.args[2] != ARRAY_SIZE(rzg2l_gpio_names)) {
> + dev_err(pctrl->dev, "gpio-ranges does not match selected SOC\n");
> + return -EINVAL;
> + }
> +
> + chip->names = rzg2l_gpio_names;
> + chip->request = rzg2l_gpio_request;
> + chip->free = rzg2l_gpio_free;
> + chip->get_direction = rzg2l_gpio_get_direction;
> + chip->direction_input = rzg2l_gpio_direction_input;
> + chip->direction_output = rzg2l_gpio_direction_output;
> + chip->get = rzg2l_gpio_get;
> + chip->set = rzg2l_gpio_set;
> + chip->label = name;
> + chip->parent = pctrl->dev;
> + chip->owner = THIS_MODULE;
> + chip->base = -1;
> + chip->ngpio = of_args.args[2];
> +
> + pctrl->gpio_range.id = 0;
> + pctrl->gpio_range.pin_base = 0;
> + pctrl->gpio_range.base = 0;
> + pctrl->gpio_range.npins = chip->ngpio;
> + pctrl->gpio_range.name = chip->label;
> + pctrl->gpio_range.gc = chip;
> + ret = devm_gpiochip_add_data(pctrl->dev, chip, pctrl);
> + if (ret) {
> + dev_err(pctrl->dev, "failed to add GPIO controller\n");
> + return ret;
> + }
> +
> + dev_dbg(pctrl->dev, "Registered gpio controller\n");
> +
> + return 0;
> +}
> +
> +static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
> +{
> + struct pinctrl_pin_desc *pins;
> + unsigned int *pin_data;
> + unsigned int i, j;
> + int ret;
> +
> + pctrl->desc.name = DRV_NAME;
> + pctrl->desc.npins = pctrl->data->n_port_pins + pctrl->data->n_dedicated_pins;
> + pctrl->desc.pctlops = &rzg2l_pinctrl_pctlops;
> + pctrl->desc.pmxops = &rzg2l_pinctrl_pmxops;
> + pctrl->desc.confops = &rzg2l_pinctrl_confops;
> + pctrl->desc.owner = THIS_MODULE;
> +
> + pins = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pins), GFP_KERNEL);
> + if (!pins)
> + return -ENOMEM;
> +
> + pin_data = devm_kcalloc(pctrl->dev, pctrl->desc.npins,
> + sizeof(unsigned int), GFP_KERNEL);
> + if (!pin_data)
> + return -ENOMEM;
> +
> + pctrl->pins = pins;
> + pctrl->desc.pins = pins;
> +
> + for (i = 0, j = 0; i < pctrl->data->n_port_pins; i++) {
> + pins[i].number = i;
> + pins[i].name = pctrl->data->port_pins[i];
> + if (i && !(i % RZG2L_PINS_PER_PORT))
> + j++;
> + pin_data[i] = pctrl->data->port_pin_configs[j];
> + pins[i].drv_data = &pin_data[i];
> + }
> +
> + for (i = 0; i < pctrl->data->n_dedicated_pins; i++) {
> + unsigned int index = pctrl->data->n_port_pins + i;
> +
> + pins[index].number = index;
> + pins[index].name = pctrl->data->dedicated_pins[i].name;
> + pin_data[index] = pctrl->data->dedicated_pins[i].config;
> + pins[index].drv_data = &pin_data[index];
> + }
> +
> + ret = devm_pinctrl_register_and_init(pctrl->dev, &pctrl->desc, pctrl,
> + &pctrl->pctl);
> + if (ret) {
> + dev_err(pctrl->dev, "pinctrl registration failed\n");
> + return ret;
> + }
> +
> + ret = pinctrl_enable(pctrl->pctl);
> + if (ret) {
> + dev_err(pctrl->dev, "pinctrl enable failed\n");
> + return ret;
> + }
> +
> + ret = rzg2l_gpio_register(pctrl);
> + if (ret) {
> + dev_err(pctrl->dev, "failed to add GPIO chip: %i\n", ret);
> + return ret;
> + };
> +
> + return 0;
> +}
> +
> +static int rzg2l_pinctrl_probe(struct platform_device *pdev)
> +{
> + struct rzg2l_pinctrl *pctrl;
> + int ret;
> +
> + pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
> + if (!pctrl)
> + return -ENOMEM;
> +
> + pctrl->dev = &pdev->dev;
> +
> + pctrl->data = of_device_get_match_data(&pdev->dev);
> + if (!pctrl->data)
> + return -EINVAL;
> +
> + pctrl->base = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(pctrl->base))
> + return PTR_ERR(pctrl->base);
> +
> + pctrl->clk = devm_clk_get(pctrl->dev, NULL);
> + if (IS_ERR(pctrl->clk)) {
> + ret = PTR_ERR(pctrl->clk);
> + dev_err(pctrl->dev, "failed to get GPIO clk : %i\n", ret);
> + return ret;
> + };
> +
> + spin_lock_init(&pctrl->lock);
> +
> + ret = rzg2l_pinctrl_register(pctrl);
> + if (ret)
> + return ret;
> +
> + ret = clk_prepare_enable(pctrl->clk);
> + if (ret) {
> + dev_err(pctrl->dev, "failed to enable GPIO clk: %i\n", ret);
> + return ret;
> + };
> +
> + platform_set_drvdata(pdev, pctrl);
> +
> + dev_info(pctrl->dev, "%s support registered\n", DRV_NAME);
> + return 0;
> +}
> +
> +static struct rzg2l_pinctrl_data r9a07g044_data = {
> + .port_pins = rzg2l_gpio_names,
> + .port_pin_configs = rzg2l_gpio_configs,
> + .dedicated_pins = rzg2l_dedicated_pins,
> + .n_port_pins = ARRAY_SIZE(rzg2l_gpio_names),
> + .n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins),
> +};
> +
> +static const struct of_device_id rzg2l_pinctrl_of_table[] = {
> + {
> + .compatible = "renesas,r9a07g044-pinctrl",
> + .data = &r9a07g044_data,
> + },
> + { /* sentinel */ }
> +};
> +
> +static struct platform_driver rzg2l_pinctrl_driver = {
> + .driver = {
> + .name = DRV_NAME,
> + .of_match_table = of_match_ptr(rzg2l_pinctrl_of_table),
> + },
> + .probe = rzg2l_pinctrl_probe,
> +};
> +
> +static int __init rzg2l_pinctrl_init(void)
> +{
> + return platform_driver_register(&rzg2l_pinctrl_driver);
> +}
> +core_initcall(rzg2l_pinctrl_init);
> +
> +MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>");
> +MODULE_DESCRIPTION("Pin and gpio controller driver for RZ/G2L family");
> +MODULE_LICENSE("GPL v2");
> --
> 2.17.1
>
--
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
