pinctrl: sh-pfc: r8a7778: Add bias (pull-up) pinconf support

On this SoC there is no simple mapping of GP pins to pull-up register
bits, so we need a table.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

1 files changed, 242 insertions, 21 deletions

diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7778.c b/drivers/pinctrl/sh-pfc/pfc-r8a7778.c
index c7d610d1f3ef..1a4e851ef4c3 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7778.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7778.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2013  Renesas Solutions Corp.
  * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
  * Copyright (C) 2013  Cogent Embedded, Inc.
+ * Copyright (C) 2015  Ulrich Hecht
  *
  * based on
  * Copyright (C) 2011  Renesas Solutions Corp.
@@ -19,32 +20,38 @@
  * GNU General Public License for more details.
  */
 
-#include <linux/platform_data/gpio-rcar.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/platform_data/gpio-rcar.h>
+#include "core.h"
 #include "sh_pfc.h"
 
-#define PORT_GP_27(bank, fn, sfx)					\
-	PORT_GP_1(bank, 0,  fn, sfx), PORT_GP_1(bank, 1,  fn, sfx),	\
-	PORT_GP_1(bank, 2,  fn, sfx), PORT_GP_1(bank, 3,  fn, sfx),	\
-	PORT_GP_1(bank, 4,  fn, sfx), PORT_GP_1(bank, 5,  fn, sfx),	\
-	PORT_GP_1(bank, 6,  fn, sfx), PORT_GP_1(bank, 7,  fn, sfx),	\
-	PORT_GP_1(bank, 8,  fn, sfx), PORT_GP_1(bank, 9,  fn, sfx),	\
-	PORT_GP_1(bank, 10, fn, sfx), PORT_GP_1(bank, 11, fn, sfx),	\
-	PORT_GP_1(bank, 12, fn, sfx), PORT_GP_1(bank, 13, fn, sfx),	\
-	PORT_GP_1(bank, 14, fn, sfx), PORT_GP_1(bank, 15, fn, sfx),	\
-	PORT_GP_1(bank, 16, fn, sfx), PORT_GP_1(bank, 17, fn, sfx),	\
-	PORT_GP_1(bank, 18, fn, sfx), PORT_GP_1(bank, 19, fn, sfx),	\
-	PORT_GP_1(bank, 20, fn, sfx), PORT_GP_1(bank, 21, fn, sfx),	\
-	PORT_GP_1(bank, 22, fn, sfx), PORT_GP_1(bank, 23, fn, sfx),	\
-	PORT_GP_1(bank, 24, fn, sfx), PORT_GP_1(bank, 25, fn, sfx),	\
-	PORT_GP_1(bank, 26, fn, sfx)
+#define PORT_GP_PUP_1(bank, pin, fn, sfx)	\
+	PORT_GP_CFG_1(bank, pin, fn, sfx, SH_PFC_PIN_CFG_PULL_UP)
+
+#define PORT_GP_PUP_27(bank, fn, sfx)					\
+	PORT_GP_PUP_1(bank, 0,  fn, sfx), PORT_GP_PUP_1(bank, 1,  fn, sfx),	\
+	PORT_GP_PUP_1(bank, 2,  fn, sfx), PORT_GP_PUP_1(bank, 3,  fn, sfx),	\
+	PORT_GP_PUP_1(bank, 4,  fn, sfx), PORT_GP_PUP_1(bank, 5,  fn, sfx),	\
+	PORT_GP_PUP_1(bank, 6,  fn, sfx), PORT_GP_PUP_1(bank, 7,  fn, sfx),	\
+	PORT_GP_PUP_1(bank, 8,  fn, sfx), PORT_GP_PUP_1(bank, 9,  fn, sfx),	\
+	PORT_GP_PUP_1(bank, 10, fn, sfx), PORT_GP_PUP_1(bank, 11, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 12, fn, sfx), PORT_GP_PUP_1(bank, 13, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 14, fn, sfx), PORT_GP_PUP_1(bank, 15, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 16, fn, sfx), PORT_GP_PUP_1(bank, 17, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 18, fn, sfx), PORT_GP_PUP_1(bank, 19, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 20, fn, sfx), PORT_GP_PUP_1(bank, 21, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 22, fn, sfx), PORT_GP_PUP_1(bank, 23, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 24, fn, sfx), PORT_GP_PUP_1(bank, 25, fn, sfx),	\
+	PORT_GP_PUP_1(bank, 26, fn, sfx)
 
 #define CPU_ALL_PORT(fn, sfx)		\
-	PORT_GP_32(0, fn, sfx),		\
-	PORT_GP_32(1, fn, sfx),		\
-	PORT_GP_32(2, fn, sfx),		\
-	PORT_GP_32(3, fn, sfx),		\
-	PORT_GP_27(4, fn, sfx)
+	PORT_GP_CFG_32(0, fn, sfx, SH_PFC_PIN_CFG_PULL_UP),		\
+	PORT_GP_CFG_32(1, fn, sfx, SH_PFC_PIN_CFG_PULL_UP),		\
+	PORT_GP_CFG_32(2, fn, sfx, SH_PFC_PIN_CFG_PULL_UP),		\
+	PORT_GP_CFG_32(3, fn, sfx, SH_PFC_PIN_CFG_PULL_UP),		\
+	PORT_GP_PUP_27(4, fn, sfx)
 
 enum {
 	PINMUX_RESERVED = 0,
@@ -2905,8 +2912,222 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 	{ },
 };
 
+#define PUPR0	0x100
+#define PUPR1	0x104
+#define PUPR2	0x108
+#define PUPR3	0x10c
+#define PUPR4	0x110
+#define PUPR5	0x114
+
+static const struct {
+	u16 reg : 11;
+	u16 bit : 5;
+} pullups[] = {
+	[RCAR_GP_PIN(0,  6)] = { PUPR0,  0 },	/* A0 */
+	[RCAR_GP_PIN(0,  7)] = { PUPR0,  1 },	/* A1 */
+	[RCAR_GP_PIN(0,  8)] = { PUPR0,  2 },	/* A2 */
+	[RCAR_GP_PIN(0,  9)] = { PUPR0,  3 },	/* A3 */
+	[RCAR_GP_PIN(0, 10)] = { PUPR0,  4 },	/* A4 */
+	[RCAR_GP_PIN(0, 11)] = { PUPR0,  5 },	/* A5 */
+	[RCAR_GP_PIN(0, 12)] = { PUPR0,  6 },	/* A6 */
+	[RCAR_GP_PIN(0, 13)] = { PUPR0,  7 },	/* A7 */
+	[RCAR_GP_PIN(0, 14)] = { PUPR0,  8 },	/* A8 */
+	[RCAR_GP_PIN(0, 15)] = { PUPR0,  9 },	/* A9 */
+	[RCAR_GP_PIN(0, 16)] = { PUPR0, 10 },	/* A10 */
+	[RCAR_GP_PIN(0, 17)] = { PUPR0, 11 },	/* A11 */
+	[RCAR_GP_PIN(0, 18)] = { PUPR0, 12 },	/* A12 */
+	[RCAR_GP_PIN(0, 19)] = { PUPR0, 13 },	/* A13 */
+	[RCAR_GP_PIN(0, 20)] = { PUPR0, 14 },	/* A14 */
+	[RCAR_GP_PIN(0, 21)] = { PUPR0, 15 },	/* A15 */
+	[RCAR_GP_PIN(0, 22)] = { PUPR0, 16 },	/* A16 */
+	[RCAR_GP_PIN(0, 23)] = { PUPR0, 17 },	/* A17 */
+	[RCAR_GP_PIN(0, 24)] = { PUPR0, 18 },	/* A18 */
+	[RCAR_GP_PIN(0, 25)] = { PUPR0, 19 },	/* A19 */
+	[RCAR_GP_PIN(0, 26)] = { PUPR0, 20 },	/* A20 */
+	[RCAR_GP_PIN(0, 27)] = { PUPR0, 21 },	/* A21 */
+	[RCAR_GP_PIN(0, 28)] = { PUPR0, 22 },	/* A22 */
+	[RCAR_GP_PIN(0, 29)] = { PUPR0, 23 },	/* A23 */
+	[RCAR_GP_PIN(0, 30)] = { PUPR0, 24 },	/* A24 */
+	[RCAR_GP_PIN(0, 31)] = { PUPR0, 25 },	/* A25 */
+	[RCAR_GP_PIN(1,  3)] = { PUPR0, 26 },	/* /EX_CS0 */
+	[RCAR_GP_PIN(1,  4)] = { PUPR0, 27 },	/* /EX_CS1 */
+	[RCAR_GP_PIN(1,  5)] = { PUPR0, 28 },	/* /EX_CS2 */
+	[RCAR_GP_PIN(1,  6)] = { PUPR0, 29 },	/* /EX_CS3 */
+	[RCAR_GP_PIN(1,  7)] = { PUPR0, 30 },	/* /EX_CS4 */
+	[RCAR_GP_PIN(1,  8)] = { PUPR0, 31 },	/* /EX_CS5 */
+
+	[RCAR_GP_PIN(0,  0)] = { PUPR1,  0 },	/* /PRESETOUT	*/
+	[RCAR_GP_PIN(0,  5)] = { PUPR1,  1 },	/* /BS		*/
+	[RCAR_GP_PIN(1,  0)] = { PUPR1,  2 },	/* RD//WR	*/
+	[RCAR_GP_PIN(1,  1)] = { PUPR1,  3 },	/* /WE0		*/
+	[RCAR_GP_PIN(1,  2)] = { PUPR1,  4 },	/* /WE1		*/
+	[RCAR_GP_PIN(1, 11)] = { PUPR1,  5 },	/* EX_WAIT0	*/
+	[RCAR_GP_PIN(1,  9)] = { PUPR1,  6 },	/* DREQ0	*/
+	[RCAR_GP_PIN(1, 10)] = { PUPR1,  7 },	/* DACK0	*/
+	[RCAR_GP_PIN(1, 12)] = { PUPR1,  8 },	/* IRQ0		*/
+	[RCAR_GP_PIN(1, 13)] = { PUPR1,  9 },	/* IRQ1		*/
+
+	[RCAR_GP_PIN(1, 22)] = { PUPR2,  0 },	/* DU0_DR0	*/
+	[RCAR_GP_PIN(1, 23)] = { PUPR2,  1 },	/* DU0_DR1	*/
+	[RCAR_GP_PIN(1, 24)] = { PUPR2,  2 },	/* DU0_DR2	*/
+	[RCAR_GP_PIN(1, 25)] = { PUPR2,  3 },	/* DU0_DR3	*/
+	[RCAR_GP_PIN(1, 26)] = { PUPR2,  4 },	/* DU0_DR4	*/
+	[RCAR_GP_PIN(1, 27)] = { PUPR2,  5 },	/* DU0_DR5	*/
+	[RCAR_GP_PIN(1, 28)] = { PUPR2,  6 },	/* DU0_DR6	*/
+	[RCAR_GP_PIN(1, 29)] = { PUPR2,  7 },	/* DU0_DR7	*/
+	[RCAR_GP_PIN(1, 30)] = { PUPR2,  8 },	/* DU0_DG0	*/
+	[RCAR_GP_PIN(1, 31)] = { PUPR2,  9 },	/* DU0_DG1	*/
+	[RCAR_GP_PIN(2,  0)] = { PUPR2, 10 },	/* DU0_DG2	*/
+	[RCAR_GP_PIN(2,  1)] = { PUPR2, 11 },	/* DU0_DG3	*/
+	[RCAR_GP_PIN(2,  2)] = { PUPR2, 12 },	/* DU0_DG4	*/
+	[RCAR_GP_PIN(2,  3)] = { PUPR2, 13 },	/* DU0_DG5	*/
+	[RCAR_GP_PIN(2,  4)] = { PUPR2, 14 },	/* DU0_DG6	*/
+	[RCAR_GP_PIN(2,  5)] = { PUPR2, 15 },	/* DU0_DG7	*/
+	[RCAR_GP_PIN(2,  6)] = { PUPR2, 16 },	/* DU0_DB0	*/
+	[RCAR_GP_PIN(2,  7)] = { PUPR2, 17 },	/* DU0_DB1	*/
+	[RCAR_GP_PIN(2,  8)] = { PUPR2, 18 },	/* DU0_DB2	*/
+	[RCAR_GP_PIN(2,  9)] = { PUPR2, 19 },	/* DU0_DB3	*/
+	[RCAR_GP_PIN(2, 10)] = { PUPR2, 20 },	/* DU0_DB4	*/
+	[RCAR_GP_PIN(2, 11)] = { PUPR2, 21 },	/* DU0_DB5	*/
+	[RCAR_GP_PIN(2, 12)] = { PUPR2, 22 },	/* DU0_DB6	*/
+	[RCAR_GP_PIN(2, 13)] = { PUPR2, 23 },	/* DU0_DB7	*/
+	[RCAR_GP_PIN(2, 14)] = { PUPR2, 24 },	/* DU0_DOTCLKIN	*/
+	[RCAR_GP_PIN(2, 15)] = { PUPR2, 25 },	/* DU0_DOTCLKOUT0 */
+	[RCAR_GP_PIN(2, 17)] = { PUPR2, 26 },	/* DU0_HSYNC	*/
+	[RCAR_GP_PIN(2, 18)] = { PUPR2, 27 },	/* DU0_VSYNC	*/
+	[RCAR_GP_PIN(2, 19)] = { PUPR2, 28 },	/* DU0_EXODDF	*/
+	[RCAR_GP_PIN(2, 20)] = { PUPR2, 29 },	/* DU0_DISP	*/
+	[RCAR_GP_PIN(2, 21)] = { PUPR2, 30 },	/* DU0_CDE	*/
+	[RCAR_GP_PIN(2, 16)] = { PUPR2, 31 },	/* DU0_DOTCLKOUT1 */
+
+	[RCAR_GP_PIN(3, 24)] = { PUPR3,  0 },	/* VI0_CLK	*/
+	[RCAR_GP_PIN(3, 25)] = { PUPR3,  1 },	/* VI0_CLKENB	*/
+	[RCAR_GP_PIN(3, 26)] = { PUPR3,  2 },	/* VI0_FIELD	*/
+	[RCAR_GP_PIN(3, 27)] = { PUPR3,  3 },	/* /VI0_HSYNC	*/
+	[RCAR_GP_PIN(3, 28)] = { PUPR3,  4 },	/* /VI0_VSYNC	*/
+	[RCAR_GP_PIN(3, 29)] = { PUPR3,  5 },	/* VI0_DATA0	*/
+	[RCAR_GP_PIN(3, 30)] = { PUPR3,  6 },	/* VI0_DATA1	*/
+	[RCAR_GP_PIN(3, 31)] = { PUPR3,  7 },	/* VI0_DATA2	*/
+	[RCAR_GP_PIN(4,  0)] = { PUPR3,  8 },	/* VI0_DATA3	*/
+	[RCAR_GP_PIN(4,  1)] = { PUPR3,  9 },	/* VI0_DATA4	*/
+	[RCAR_GP_PIN(4,  2)] = { PUPR3, 10 },	/* VI0_DATA5	*/
+	[RCAR_GP_PIN(4,  3)] = { PUPR3, 11 },	/* VI0_DATA6	*/
+	[RCAR_GP_PIN(4,  4)] = { PUPR3, 12 },	/* VI0_DATA7	*/
+	[RCAR_GP_PIN(4,  5)] = { PUPR3, 13 },	/* VI0_G2	*/
+	[RCAR_GP_PIN(4,  6)] = { PUPR3, 14 },	/* VI0_G3	*/
+	[RCAR_GP_PIN(4,  7)] = { PUPR3, 15 },	/* VI0_G4	*/
+	[RCAR_GP_PIN(4,  8)] = { PUPR3, 16 },	/* VI0_G5	*/
+	[RCAR_GP_PIN(4, 21)] = { PUPR3, 17 },	/* VI1_DATA12	*/
+	[RCAR_GP_PIN(4, 22)] = { PUPR3, 18 },	/* VI1_DATA13	*/
+	[RCAR_GP_PIN(4, 23)] = { PUPR3, 19 },	/* VI1_DATA14	*/
+	[RCAR_GP_PIN(4, 24)] = { PUPR3, 20 },	/* VI1_DATA15	*/
+	[RCAR_GP_PIN(4,  9)] = { PUPR3, 21 },	/* ETH_REF_CLK	*/
+	[RCAR_GP_PIN(4, 10)] = { PUPR3, 22 },	/* ETH_TXD0	*/
+	[RCAR_GP_PIN(4, 11)] = { PUPR3, 23 },	/* ETH_TXD1	*/
+	[RCAR_GP_PIN(4, 12)] = { PUPR3, 24 },	/* ETH_CRS_DV	*/
+	[RCAR_GP_PIN(4, 13)] = { PUPR3, 25 },	/* ETH_TX_EN	*/
+	[RCAR_GP_PIN(4, 14)] = { PUPR3, 26 },	/* ETH_RX_ER	*/
+	[RCAR_GP_PIN(4, 15)] = { PUPR3, 27 },	/* ETH_RXD0	*/
+	[RCAR_GP_PIN(4, 16)] = { PUPR3, 28 },	/* ETH_RXD1	*/
+	[RCAR_GP_PIN(4, 17)] = { PUPR3, 29 },	/* ETH_MDC	*/
+	[RCAR_GP_PIN(4, 18)] = { PUPR3, 30 },	/* ETH_MDIO	*/
+	[RCAR_GP_PIN(4, 19)] = { PUPR3, 31 },	/* ETH_LINK	*/
+
+	[RCAR_GP_PIN(3,  6)] = { PUPR4,  0 },	/* SSI_SCK012	*/
+	[RCAR_GP_PIN(3,  7)] = { PUPR4,  1 },	/* SSI_WS012	*/
+	[RCAR_GP_PIN(3, 10)] = { PUPR4,  2 },	/* SSI_SDATA0	*/
+	[RCAR_GP_PIN(3,  9)] = { PUPR4,  3 },	/* SSI_SDATA1	*/
+	[RCAR_GP_PIN(3,  8)] = { PUPR4,  4 },	/* SSI_SDATA2	*/
+	[RCAR_GP_PIN(3,  2)] = { PUPR4,  5 },	/* SSI_SCK34	*/
+	[RCAR_GP_PIN(3,  3)] = { PUPR4,  6 },	/* SSI_WS34	*/
+	[RCAR_GP_PIN(3,  5)] = { PUPR4,  7 },	/* SSI_SDATA3	*/
+	[RCAR_GP_PIN(3,  4)] = { PUPR4,  8 },	/* SSI_SDATA4	*/
+	[RCAR_GP_PIN(2, 31)] = { PUPR4,  9 },	/* SSI_SCK5	*/
+	[RCAR_GP_PIN(3,  0)] = { PUPR4, 10 },	/* SSI_WS5	*/
+	[RCAR_GP_PIN(3,  1)] = { PUPR4, 11 },	/* SSI_SDATA5	*/
+	[RCAR_GP_PIN(2, 28)] = { PUPR4, 12 },	/* SSI_SCK6	*/
+	[RCAR_GP_PIN(2, 29)] = { PUPR4, 13 },	/* SSI_WS6	*/
+	[RCAR_GP_PIN(2, 30)] = { PUPR4, 14 },	/* SSI_SDATA6	*/
+	[RCAR_GP_PIN(2, 24)] = { PUPR4, 15 },	/* SSI_SCK78	*/
+	[RCAR_GP_PIN(2, 25)] = { PUPR4, 16 },	/* SSI_WS78	*/
+	[RCAR_GP_PIN(2, 27)] = { PUPR4, 17 },	/* SSI_SDATA7	*/
+	[RCAR_GP_PIN(2, 26)] = { PUPR4, 18 },	/* SSI_SDATA8	*/
+	[RCAR_GP_PIN(3, 23)] = { PUPR4, 19 },	/* TCLK0	*/
+	[RCAR_GP_PIN(3, 11)] = { PUPR4, 20 },	/* SD0_CLK	*/
+	[RCAR_GP_PIN(3, 12)] = { PUPR4, 21 },	/* SD0_CMD	*/
+	[RCAR_GP_PIN(3, 13)] = { PUPR4, 22 },	/* SD0_DAT0	*/
+	[RCAR_GP_PIN(3, 14)] = { PUPR4, 23 },	/* SD0_DAT1	*/
+	[RCAR_GP_PIN(3, 15)] = { PUPR4, 24 },	/* SD0_DAT2	*/
+	[RCAR_GP_PIN(3, 16)] = { PUPR4, 25 },	/* SD0_DAT3	*/
+	[RCAR_GP_PIN(3, 17)] = { PUPR4, 26 },	/* SD0_CD	*/
+	[RCAR_GP_PIN(3, 18)] = { PUPR4, 27 },	/* SD0_WP	*/
+	[RCAR_GP_PIN(2, 22)] = { PUPR4, 28 },	/* AUDIO_CLKA	*/
+	[RCAR_GP_PIN(2, 23)] = { PUPR4, 29 },	/* AUDIO_CLKB	*/
+	[RCAR_GP_PIN(1, 14)] = { PUPR4, 30 },	/* IRQ2		*/
+	[RCAR_GP_PIN(1, 15)] = { PUPR4, 31 },	/* IRQ3		*/
+
+	[RCAR_GP_PIN(0,  1)] = { PUPR5,  0 },	/* PENC0	*/
+	[RCAR_GP_PIN(0,  2)] = { PUPR5,  1 },	/* PENC1	*/
+	[RCAR_GP_PIN(0,  3)] = { PUPR5,  2 },	/* USB_OVC0	*/
+	[RCAR_GP_PIN(0,  4)] = { PUPR5,  3 },	/* USB_OVC1	*/
+	[RCAR_GP_PIN(1, 16)] = { PUPR5,  4 },	/* SCIF_CLK	*/
+	[RCAR_GP_PIN(1, 17)] = { PUPR5,  5 },	/* TX0		*/
+	[RCAR_GP_PIN(1, 18)] = { PUPR5,  6 },	/* RX0		*/
+	[RCAR_GP_PIN(1, 19)] = { PUPR5,  7 },	/* SCK0		*/
+	[RCAR_GP_PIN(1, 20)] = { PUPR5,  8 },	/* /CTS0	*/
+	[RCAR_GP_PIN(1, 21)] = { PUPR5,  9 },	/* /RTS0	*/
+	[RCAR_GP_PIN(3, 19)] = { PUPR5, 10 },	/* HSPI_CLK0	*/
+	[RCAR_GP_PIN(3, 20)] = { PUPR5, 11 },	/* /HSPI_CS0	*/
+	[RCAR_GP_PIN(3, 21)] = { PUPR5, 12 },	/* HSPI_RX0	*/
+	[RCAR_GP_PIN(3, 22)] = { PUPR5, 13 },	/* HSPI_TX0	*/
+	[RCAR_GP_PIN(4, 20)] = { PUPR5, 14 },	/* ETH_MAGIC	*/
+	[RCAR_GP_PIN(4, 25)] = { PUPR5, 15 },	/* AVS1		*/
+	[RCAR_GP_PIN(4, 26)] = { PUPR5, 16 },	/* AVS2		*/
+};
+
+static unsigned int r8a7778_pinmux_get_bias(struct sh_pfc *pfc,
+					    unsigned int pin)
+{
+	void __iomem *addr;
+
+	if (WARN_ON_ONCE(!pullups[pin].reg))
+		return PIN_CONFIG_BIAS_DISABLE;
+
+	addr = pfc->windows->virt + pullups[pin].reg;
+
+	if (ioread32(addr) & BIT(pullups[pin].bit))
+		return PIN_CONFIG_BIAS_PULL_UP;
+	else
+		return PIN_CONFIG_BIAS_DISABLE;
+}
+
+static void r8a7778_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin,
+				   unsigned int bias)
+{
+	void __iomem *addr;
+	u32 value;
+	u32 bit;
+
+	if (WARN_ON_ONCE(!pullups[pin].reg))
+		return;
+
+	addr = pfc->windows->virt + pullups[pin].reg;
+	bit = BIT(pullups[pin].bit);
+
+	value = ioread32(addr) & ~bit;
+	if (bias == PIN_CONFIG_BIAS_PULL_UP)
+		value |= bit;
+	iowrite32(value, addr);
+}
+
+static const struct sh_pfc_soc_operations r8a7778_pfc_ops = {
+	.get_bias = r8a7778_pinmux_get_bias,
+	.set_bias = r8a7778_pinmux_set_bias,
+};
+
 const struct sh_pfc_soc_info r8a7778_pinmux_info = {
 	.name = "r8a7778_pfc",
+	.ops  = &r8a7778_pfc_ops,
 
 	.unlock_reg = 0xfffc0000, /* PMMR */