diff options
| author | Simon Horman <horms+renesas@verge.net.au> | 2016-09-12 09:36:35 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-09-14 09:26:54 +0200 |
| commit | 77fd4136e58c642482f03d293d5717658a569b4b (patch) | |
| tree | f49a5d802599b7dad9c7e1663fb32db285d12dd9 | |
| parent | 0e1396f101da63c1ea3a1868d6e549f3ca20dd5b (diff) | |
pinctrl: sh-pfc: r8a7794: Implement voltage switching for SDHIsh-pfc-for-v4.9-tag3
All the SHDIs can operate with either 3.3V or 1.8V signals, depending
on negotiation with the card.
Based on work by Wolfram Sang for the r8a7790.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
| -rw-r--r-- | drivers/pinctrl/sh-pfc/pfc-r8a7794.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7794.c b/drivers/pinctrl/sh-pfc/pfc-r8a7794.c index 8bc2cf0c594e..ed734f560c84 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a7794.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7794.c @@ -22,7 +22,9 @@ PORT_GP_32(3, fn, sfx), \ PORT_GP_32(4, fn, sfx), \ PORT_GP_28(5, fn, sfx), \ - PORT_GP_26(6, fn, sfx) + PORT_GP_CFG_24(6, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \ + PORT_GP_1(6, 24, fn, sfx), \ + PORT_GP_1(6, 25, fn, sfx) enum { PINMUX_RESERVED = 0, @@ -5160,8 +5162,32 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = { { }, }; +static int r8a7794_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin, u32 *pocctrl) +{ + *pocctrl = 0xe606006c; + + switch (pin & 0x1f) { + case 6: return 23; + case 7: return 16; + case 14: return 15; + case 15: return 8; + case 0 ... 5: + case 8 ... 13: + return 22 - (pin & 0x1f); + case 16 ... 23: + return 47 - (pin & 0x1f); + } + + return -EINVAL; +} + +static const struct sh_pfc_soc_operations r8a7794_pinmux_ops = { + .pin_to_pocctrl = r8a7794_pin_to_pocctrl, +}; + const struct sh_pfc_soc_info r8a7794_pinmux_info = { .name = "r8a77940_pfc", + .ops = &r8a7794_pinmux_ops, .unlock_reg = 0xe6060000, /* PMMR */ .function = { PINMUX_FUNCTION_BEGIN, PINMUX_FUNCTION_END }, |