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pinctrl: sh-pfc: r8a77980: Add pin I/O voltage control support

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Add the pin I/O voltage level control support to the R8A77980 PFC driver.

Loosely based on the original (and large) patch by Vladimir Barinov.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Sergei Shtylyov 2018-04-19 21:27:34 +03:00 committed by Linus Walleij
parent 98c1c1f08a
commit b374c90f0a
1 changed files with 49 additions and 3 deletions
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52
drivers/pinctrl/sh-pfc/pfc-r8a77980.c
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@ -19,10 +19,10 @@
#include "sh_pfc.h"
#define CPU_ALL_PORT(fn, sfx) \
PORT_GP_22(0, fn, sfx), \
PORT_GP_CFG_22(0, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \
PORT_GP_28(1, fn, sfx), \
PORT_GP_30(2, fn, sfx), \
PORT_GP_17(3, fn, sfx), \
PORT_GP_CFG_30(2, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \
PORT_GP_CFG_17(3, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \
PORT_GP_25(4, fn, sfx), \
PORT_GP_15(5, fn, sfx)
@ -2779,8 +2779,53 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
{ },
};
enum ioctrl_regs {
IOCTRL30,
IOCTRL31,
IOCTRL32,
IOCTRL33,
};
static const struct pinmux_ioctrl_reg pinmux_ioctrl_regs[] = {
[IOCTRL30] = { 0xe6060380, },
[IOCTRL31] = { 0xe6060384, },
[IOCTRL32] = { 0xe6060388, },
[IOCTRL33] = { 0xe606038c, },
{ /* sentinel */ },
};
static int r8a77980_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin,
u32 *pocctrl)
{
int bit = pin & 0x1f;
*pocctrl = pinmux_ioctrl_regs[IOCTRL30].reg;
if (pin >= RCAR_GP_PIN(0, 0) && pin <= RCAR_GP_PIN(0, 21))
return bit;
else if (pin >= RCAR_GP_PIN(2, 0) && pin <= RCAR_GP_PIN(2, 9))
return bit + 22;
*pocctrl = pinmux_ioctrl_regs[IOCTRL31].reg;
if (pin >= RCAR_GP_PIN(2, 10) && pin <= RCAR_GP_PIN(2, 16))
return bit - 10;
if ((pin >= RCAR_GP_PIN(2, 17) && pin <= RCAR_GP_PIN(2, 24)) ||
(pin >= RCAR_GP_PIN(3, 0) && pin <= RCAR_GP_PIN(3, 16)))
return bit + 7;
*pocctrl = pinmux_ioctrl_regs[IOCTRL32].reg;
if (pin >= RCAR_GP_PIN(2, 25) && pin <= RCAR_GP_PIN(2, 29))
return pin - 25;
return -EINVAL;
}
static const struct sh_pfc_soc_operations pinmux_ops = {
.pin_to_pocctrl = r8a77980_pin_to_pocctrl,
};
const struct sh_pfc_soc_info r8a77980_pinmux_info = {
.name = "r8a77980_pfc",
.ops = &pinmux_ops,
.unlock_reg = 0xe6060000, /* PMMR */
.function = { PINMUX_FUNCTION_BEGIN, PINMUX_FUNCTION_END },
@ -2793,6 +2838,7 @@ const struct sh_pfc_soc_info r8a77980_pinmux_info = {
.nr_functions = ARRAY_SIZE(pinmux_functions),
.cfg_regs = pinmux_config_regs,
.ioctrl_regs = pinmux_ioctrl_regs,
.pinmux_data = pinmux_data,
.pinmux_data_size = ARRAY_SIZE(pinmux_data),