diff options
| author | Takeshi Kihara <takeshi.kihara.df@renesas.com> | 2018-11-05 22:40:12 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-11-13 10:08:25 +0100 |
| commit | 33847a71373cd6aeb185be4806ba8a760de0f4cc (patch) | |
| tree | 9fea1771e3e74d7189c7fe8365f6b572cec8a2d1 /drivers/pinctrl/sh-pfc | |
| parent | 21ac0d58bb2de14f0898871399f88177be2c0438 (diff) | |
pinctrl: sh-pfc: r8a77990: Add voltage switch operations for SDHI
This patch supports the {get,set}_io_voltage operations of SDHI.
This operates the IOCTRL30 register on the R8A77990 SoC and makes
1.8V/3.3V signal voltage switch possible.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/pinctrl/sh-pfc')
| -rw-r--r-- | drivers/pinctrl/sh-pfc/pfc-r8a77990.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a77990.c b/drivers/pinctrl/sh-pfc/pfc-r8a77990.c index 903460a8edd9..e6a0418a37d7 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a77990.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a77990.c @@ -23,8 +23,12 @@ PORT_GP_CFG_18(0, fn, sfx, CFG_FLAGS), \ PORT_GP_CFG_23(1, fn, sfx, CFG_FLAGS), \ PORT_GP_CFG_26(2, fn, sfx, CFG_FLAGS), \ - PORT_GP_CFG_16(3, fn, sfx, CFG_FLAGS), \ - PORT_GP_CFG_11(4, fn, sfx, CFG_FLAGS), \ + PORT_GP_CFG_12(3, fn, sfx, CFG_FLAGS | SH_PFC_PIN_CFG_IO_VOLTAGE), \ + PORT_GP_CFG_1(3, 12, fn, sfx, CFG_FLAGS), \ + PORT_GP_CFG_1(3, 13, fn, sfx, CFG_FLAGS), \ + PORT_GP_CFG_1(3, 14, fn, sfx, CFG_FLAGS), \ + PORT_GP_CFG_1(3, 15, fn, sfx, CFG_FLAGS), \ + PORT_GP_CFG_11(4, fn, sfx, CFG_FLAGS | SH_PFC_PIN_CFG_IO_VOLTAGE), \ PORT_GP_CFG_20(5, fn, sfx, CFG_FLAGS), \ PORT_GP_CFG_18(6, fn, sfx, CFG_FLAGS) /* @@ -3933,6 +3937,31 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = { { }, }; +enum ioctrl_regs { + IOCTRL30, +}; + +static const struct pinmux_ioctrl_reg pinmux_ioctrl_regs[] = { + [IOCTRL30] = { 0xe6060380, }, + { /* sentinel */ }, +}; + +static int r8a77990_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin, + u32 *pocctrl) +{ + int bit = -EINVAL; + + *pocctrl = pinmux_ioctrl_regs[IOCTRL30].reg; + + if (pin >= RCAR_GP_PIN(3, 0) && pin <= RCAR_GP_PIN(3, 11)) + bit = pin & 0x1f; + + if (pin >= RCAR_GP_PIN(4, 0) && pin <= RCAR_GP_PIN(4, 10)) + bit = (pin & 0x1f) + 19; + + return bit; +} + static const struct pinmux_bias_reg pinmux_bias_regs[] = { { PINMUX_BIAS_REG("PUEN0", 0xe6060400, "PUD0", 0xe6060440) { [0] = RCAR_GP_PIN(2, 23), /* RD# */ @@ -4183,6 +4212,7 @@ static void r8a77990_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin, } static const struct sh_pfc_soc_operations r8a77990_pinmux_ops = { + .pin_to_pocctrl = r8a77990_pin_to_pocctrl, .get_bias = r8a77990_pinmux_get_bias, .set_bias = r8a77990_pinmux_set_bias, }; @@ -4204,6 +4234,7 @@ const struct sh_pfc_soc_info r8a774c0_pinmux_info = { .cfg_regs = pinmux_config_regs, .bias_regs = pinmux_bias_regs, + .ioctrl_regs = pinmux_ioctrl_regs, .pinmux_data = pinmux_data, .pinmux_data_size = ARRAY_SIZE(pinmux_data), |