From: Takeshi Kihara <[email protected]> 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 <[email protected]> Signed-off-by: Marek Vasut <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Simon Horman <[email protected]> Cc: Wolfram Sang <[email protected]> Cc: Yoshihiro Shimoda <[email protected]> Cc: [email protected] --- drivers/pinctrl/sh-pfc/pfc-r8a77990.c | 35 +++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a77990.c b/drivers/pinctrl/sh-pfc/pfc-r8a77990.c index 97aba270a515..95d478353627 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) /* @@ -3494,6 +3498,31 @@ 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# */ @@ -3744,6 +3773,7 @@ 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, }; @@ -3790,6 +3820,7 @@ const struct sh_pfc_soc_info r8a77990_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), -- 2.18.0
