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@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
The patch is against the 'sh-pfc' branch of Geert's 'renesas-drivers.git' repo.
Changes in version 2:
- added IOCTRL33 to *enum* ioctrl_regs and its address to pinmux_ioctrl_regs[];
- fixed the subject;
- added Geert's tag.
drivers/pinctrl/sh-pfc/pfc-r8a77980.c | 52 ++++++++++++++++++++++++++++++++--
1 file changed, 49 insertions(+), 3 deletions(-)
Index: renesas-drivers/drivers/pinctrl/sh-pfc/pfc-r8a77980.c
===================================================================
--- renesas-drivers.orig/drivers/pinctrl/sh-pfc/pfc-r8a77980.c
+++ renesas-drivers/drivers/pinctrl/sh-pfc/pfc-r8a77980.c
@@ -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 pinmu
{ },
};
+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_pi
.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),
