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| author | Simon Horman <horms+renesas@verge.net.au> | 2016-09-08 11:57:33 (GMT) |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-09-12 08:58:23 (GMT) |
| commit | c5901bdcbc6142b686b15d0b4a959aa19a350af1 (patch) | |
| tree | 9806dcd20d409949ac4826a0739888eede73372e | |
| parent | 40ade582194668aa4336a30f96c9d592c46a1928 (diff) | |
| download | linux-c5901bdcbc6142b686b15d0b4a959aa19a350af1.tar.xz | |
pinctrl: sh-pfc: r8a7796: Add voltage switch operations for SDHI
This patch supports the {get,set}_io_voltage operations of SDHI.
This operates the POCCTRL0 register on R8A7796 SoC and makes 1.8v/3.3v
voltage switch.
Based on work by Takeshi Kihara and Wolfram Sang.
Cc: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
| -rw-r--r-- | drivers/pinctrl/sh-pfc/pfc-r8a7796.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7796.c b/drivers/pinctrl/sh-pfc/pfc-r8a7796.c index f8ab74d..dc9b671 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a7796.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7796.c @@ -23,8 +23,12 @@ PORT_GP_16(0, fn, sfx), \ PORT_GP_29(1, fn, sfx), \ PORT_GP_15(2, fn, sfx), \ - PORT_GP_16(3, fn, sfx), \ - PORT_GP_18(4, fn, sfx), \ + PORT_GP_CFG_12(3, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \ + PORT_GP_1(3, 12, fn, sfx), \ + PORT_GP_1(3, 13, fn, sfx), \ + PORT_GP_1(3, 14, fn, sfx), \ + PORT_GP_1(3, 15, fn, sfx), \ + PORT_GP_CFG_18(4, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \ PORT_GP_26(5, fn, sfx), \ PORT_GP_32(6, fn, sfx), \ PORT_GP_4(7, fn, sfx) @@ -2627,8 +2631,28 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = { { }, }; +static int r8a7796_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin, u32 *pocctrl) +{ + int bit = -EINVAL; + + *pocctrl = 0xe6060380; + + 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, 17)) + bit = (pin & 0x1f) + 12; + + return bit; +} + +static const struct sh_pfc_soc_operations r8a7796_pinmux_ops = { + .pin_to_pocctrl = r8a7796_pin_to_pocctrl, +}; + const struct sh_pfc_soc_info r8a7796_pinmux_info = { .name = "r8a77960_pfc", + .ops = &r8a7796_pinmux_ops, .unlock_reg = 0xe6060000, /* PMMR */ .function = { PINMUX_FUNCTION_BEGIN, PINMUX_FUNCTION_END }, |