Implement support for pull-up (most pins, excl. DU_DOTCLKIN0) and
pull-down (most pins, excl. JTAG) handling for the R-Car D3 SoC, using
some parts from the common R-Car bias handling, which requires making
rcar_pin_to_bias_reg() public.
R-Car D3 needs special handling for the NFRE# (GP_3_0) and NFWE#
(GP_3_1) pins. Unlike all other pins, they are controlled by different
bits in the LSI pin pull-up/down control register (PUD2) than in the LSI
pin pull-enable register (PUEN2).
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
v2:
- Add Reviewed-by,
- Fix NFRE# and NFWE# handling.
---
drivers/pinctrl/renesas/pfc-r8a77995.c | 320 ++++++++++++++++++++++++-
drivers/pinctrl/renesas/pinctrl.c | 2 +-
drivers/pinctrl/renesas/sh_pfc.h | 3 +
3 files changed, 316 insertions(+), 9 deletions(-)
diff --git a/drivers/pinctrl/renesas/pfc-r8a77995.c b/drivers/pinctrl/renesas/pfc-r8a77995.c
index b479f87a3b23f0f1..c56e1e4c13b39cf3 100644
--- a/drivers/pinctrl/renesas/pfc-r8a77995.c
+++ b/drivers/pinctrl/renesas/pfc-r8a77995.c
@@ -14,16 +14,27 @@
#include <linux/errno.h>
#include <linux/kernel.h>
+#include "core.h"
#include "sh_pfc.h"
-#define CPU_ALL_GP(fn, sfx) \
- PORT_GP_9(0, fn, sfx), \
- PORT_GP_32(1, fn, sfx), \
- PORT_GP_32(2, fn, sfx), \
- PORT_GP_CFG_10(3, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \
- PORT_GP_32(4, fn, sfx), \
- PORT_GP_21(5, fn, sfx), \
- PORT_GP_14(6, fn, sfx)
+#define CPU_ALL_GP(fn, sfx) \
+ PORT_GP_CFG_9(0, fn, sfx, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PORT_GP_CFG_32(1, fn, sfx, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PORT_GP_CFG_32(2, fn, sfx, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PORT_GP_CFG_10(3, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE | SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PORT_GP_CFG_32(4, fn, sfx, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PORT_GP_CFG_21(5, fn, sfx, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PORT_GP_CFG_14(6, fn, sfx, SH_PFC_PIN_CFG_PULL_UP_DOWN)
+
+#define CPU_ALL_NOGP(fn) \
+ PIN_NOGP_CFG(DU_DOTCLKIN0, "DU_DOTCLKIN0", fn, SH_PFC_PIN_CFG_PULL_DOWN), \
+ PIN_NOGP_CFG(FSCLKST_N, "FSCLKST#", fn, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PIN_NOGP_CFG(MLB_REF, "MLB_REF", fn, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PIN_NOGP_CFG(PRESETOUT_N, "PRESETOUT#", fn, SH_PFC_PIN_CFG_PULL_UP_DOWN), \
+ PIN_NOGP_CFG(TCK, "TCK", fn, SH_PFC_PIN_CFG_PULL_UP), \
+ PIN_NOGP_CFG(TDI, "TDI", fn, SH_PFC_PIN_CFG_PULL_UP), \
+ PIN_NOGP_CFG(TMS, "TMS", fn, SH_PFC_PIN_CFG_PULL_UP), \
+ PIN_NOGP_CFG(TRST_N, "TRST#", fn, SH_PFC_PIN_CFG_PULL_UP)
/*
* F_() : just information
@@ -930,8 +941,17 @@ static const u16 pinmux_data[] = {
PINMUX_IPSR_GPSR(IP13_7_4, TPU0TO3_A),
};
+/*
+ * Pins not associated with a GPIO port.
+ */
+enum {
+ GP_ASSIGN_LAST(),
+ NOGP_ALL(),
+};
+
static const struct sh_pfc_pin pinmux_pins[] = {
PINMUX_GPIO_GP_ALL(),
+ PINMUX_NOGP_ALL(),
};
/* - AUDIO CLOCK ------------------------------------------------------------- */
@@ -2834,6 +2854,214 @@ static int r8a77995_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin, u32 *po
return bit;
}
+static const struct pinmux_bias_reg pinmux_bias_regs[] = {
+ { PINMUX_BIAS_REG("PUEN0", 0xe6060400, "PUD0", 0xe6060440) {
+ [ 0] = RCAR_GP_PIN(1, 9), /* DU_DG1 */
+ [ 1] = RCAR_GP_PIN(1, 8), /* DU_DG0 */
+ [ 2] = RCAR_GP_PIN(1, 7), /* DU_DB7 */
+ [ 3] = RCAR_GP_PIN(1, 6), /* DU_DB6 */
+ [ 4] = RCAR_GP_PIN(1, 5), /* DU_DB5 */
+ [ 5] = RCAR_GP_PIN(1, 4), /* DU_DB4 */
+ [ 6] = RCAR_GP_PIN(1, 3), /* DU_DB3 */
+ [ 7] = RCAR_GP_PIN(1, 2), /* DU_DB2 */
+ [ 8] = RCAR_GP_PIN(1, 1), /* DU_DB1 */
+ [ 9] = RCAR_GP_PIN(1, 0), /* DU_DB0 */
+ [10] = PIN_MLB_REF, /* MLB_REF */
+ [11] = RCAR_GP_PIN(0, 8), /* MLB_SIG */
+ [12] = RCAR_GP_PIN(0, 7), /* MLB_DAT */
+ [13] = RCAR_GP_PIN(0, 6), /* MLB_CLK */
+ [14] = RCAR_GP_PIN(0, 5), /* MSIOF2_RXD */
+ [15] = RCAR_GP_PIN(0, 4), /* MSIOF2_TXD */
+ [16] = RCAR_GP_PIN(0, 3), /* MSIOF2_SCK */
+ [17] = RCAR_GP_PIN(0, 2), /* IRQ0_A */
+ [18] = RCAR_GP_PIN(0, 1), /* USB0_OVC */
+ [19] = RCAR_GP_PIN(0, 0), /* USB0_PWEN */
+ [20] = PIN_PRESETOUT_N, /* PRESETOUT# */
+ [21] = PIN_DU_DOTCLKIN0, /* DU_DOTCLKIN0 */
+ [22] = PIN_FSCLKST_N, /* FSCLKST# */
+ [23] = SH_PFC_PIN_NONE,
+ [24] = SH_PFC_PIN_NONE,
+ [25] = SH_PFC_PIN_NONE,
+ [26] = SH_PFC_PIN_NONE,
+ [27] = SH_PFC_PIN_NONE,
+ [28] = PIN_TDI, /* TDI */
+ [29] = PIN_TMS, /* TMS */
+ [30] = PIN_TCK, /* TCK */
+ [31] = PIN_TRST_N, /* TRST# */
+ } },
+ { PINMUX_BIAS_REG("PUEN1", 0xe6060404, "PUD1", 0xe6060444) {
+ [ 0] = RCAR_GP_PIN(2, 9), /* VI4_DATA8 */
+ [ 1] = RCAR_GP_PIN(2, 8), /* VI4_DATA7 */
+ [ 2] = RCAR_GP_PIN(2, 7), /* VI4_DATA6 */
+ [ 3] = RCAR_GP_PIN(2, 6), /* VI4_DATA5 */
+ [ 4] = RCAR_GP_PIN(2, 5), /* VI4_DATA4 */
+ [ 5] = RCAR_GP_PIN(2, 4), /* VI4_DATA3 */
+ [ 6] = RCAR_GP_PIN(2, 3), /* VI4_DATA2 */
+ [ 7] = RCAR_GP_PIN(2, 2), /* VI4_DATA1 */
+ [ 8] = RCAR_GP_PIN(2, 1), /* VI4_DATA0 */
+ [ 9] = RCAR_GP_PIN(2, 0), /* VI4_CLK */
+ [10] = RCAR_GP_PIN(1, 31), /* QPOLB */
+ [11] = RCAR_GP_PIN(1, 30), /* QPOLA */
+ [12] = RCAR_GP_PIN(1, 29), /* DU_CDE */
+ [13] = RCAR_GP_PIN(1, 28), /* DU_DISP/CDE */
+ [14] = RCAR_GP_PIN(1, 27), /* DU_DISP */
+ [15] = RCAR_GP_PIN(1, 26), /* DU_VSYNC */
+ [16] = RCAR_GP_PIN(1, 25), /* DU_HSYNC */
+ [17] = RCAR_GP_PIN(1, 24), /* DU_DOTCLKOUT0 */
+ [18] = RCAR_GP_PIN(1, 23), /* DU_DR7 */
+ [19] = RCAR_GP_PIN(1, 22), /* DU_DR6 */
+ [20] = RCAR_GP_PIN(1, 21), /* DU_DR5 */
+ [21] = RCAR_GP_PIN(1, 20), /* DU_DR4 */
+ [22] = RCAR_GP_PIN(1, 19), /* DU_DR3 */
+ [23] = RCAR_GP_PIN(1, 18), /* DU_DR2 */
+ [24] = RCAR_GP_PIN(1, 17), /* DU_DR1 */
+ [25] = RCAR_GP_PIN(1, 16), /* DU_DR0 */
+ [26] = RCAR_GP_PIN(1, 15), /* DU_DG7 */
+ [27] = RCAR_GP_PIN(1, 14), /* DU_DG6 */
+ [28] = RCAR_GP_PIN(1, 13), /* DU_DG5 */
+ [29] = RCAR_GP_PIN(1, 12), /* DU_DG4 */
+ [30] = RCAR_GP_PIN(1, 11), /* DU_DG3 */
+ [31] = RCAR_GP_PIN(1, 10), /* DU_DG2 */
+ } },
+ { PINMUX_BIAS_REG("PUEN2", 0xe6060408, "PUD2", 0xe6060448) {
+ [ 0] = RCAR_GP_PIN(3, 8), /* NFDATA6 */
+ [ 1] = RCAR_GP_PIN(3, 7), /* NFDATA5 */
+ [ 2] = RCAR_GP_PIN(3, 6), /* NFDATA4 */
+ [ 3] = RCAR_GP_PIN(3, 5), /* NFDATA3 */
+ [ 4] = RCAR_GP_PIN(3, 4), /* NFDATA2 */
+ [ 5] = RCAR_GP_PIN(3, 3), /* NFDATA1 */
+ [ 6] = RCAR_GP_PIN(3, 2), /* NFDATA0 */
+ [ 7] = RCAR_GP_PIN(3, 1), /* NFWE# (PUEN) / NFRE# (PUD) */
+ [ 8] = RCAR_GP_PIN(3, 0), /* NFRE# (PUEN) / NFWE# (PUD) */
+ [ 9] = RCAR_GP_PIN(4, 0), /* NFRB# */
+ [10] = RCAR_GP_PIN(2, 31), /* NFCE# */
+ [11] = RCAR_GP_PIN(2, 30), /* NFCLE */
+ [12] = RCAR_GP_PIN(2, 29), /* NFALE */
+ [13] = RCAR_GP_PIN(2, 28), /* VI4_CLKENB */
+ [14] = RCAR_GP_PIN(2, 27), /* VI4_FIELD */
+ [15] = RCAR_GP_PIN(2, 26), /* VI4_HSYNC# */
+ [16] = RCAR_GP_PIN(2, 25), /* VI4_VSYNC# */
+ [17] = RCAR_GP_PIN(2, 24), /* VI4_DATA23 */
+ [18] = RCAR_GP_PIN(2, 23), /* VI4_DATA22 */
+ [19] = RCAR_GP_PIN(2, 22), /* VI4_DATA21 */
+ [20] = RCAR_GP_PIN(2, 21), /* VI4_DATA20 */
+ [21] = RCAR_GP_PIN(2, 20), /* VI4_DATA19 */
+ [22] = RCAR_GP_PIN(2, 19), /* VI4_DATA18 */
+ [23] = RCAR_GP_PIN(2, 18), /* VI4_DATA17 */
+ [24] = RCAR_GP_PIN(2, 17), /* VI4_DATA16 */
+ [25] = RCAR_GP_PIN(2, 16), /* VI4_DATA15 */
+ [26] = RCAR_GP_PIN(2, 15), /* VI4_DATA14 */
+ [27] = RCAR_GP_PIN(2, 14), /* VI4_DATA13 */
+ [28] = RCAR_GP_PIN(2, 13), /* VI4_DATA12 */
+ [29] = RCAR_GP_PIN(2, 12), /* VI4_DATA11 */
+ [30] = RCAR_GP_PIN(2, 11), /* VI4_DATA10 */
+ [31] = RCAR_GP_PIN(2, 10), /* VI4_DATA9 */
+ } },
+ { PINMUX_BIAS_REG("PUEN3", 0xe606040c, "PUD3", 0xe606044c) {
+ [ 0] = RCAR_GP_PIN(4, 31), /* CAN0_RX_A */
+ [ 1] = RCAR_GP_PIN(5, 2), /* CAN_CLK */
+ [ 2] = RCAR_GP_PIN(5, 1), /* TPU0TO1_A */
+ [ 3] = RCAR_GP_PIN(5, 0), /* TPU0TO0_A */
+ [ 4] = RCAR_GP_PIN(4, 27), /* TX2 */
+ [ 5] = RCAR_GP_PIN(4, 26), /* RX2 */
+ [ 6] = RCAR_GP_PIN(4, 25), /* SCK2 */
+ [ 7] = RCAR_GP_PIN(4, 24), /* TX1_A */
+ [ 8] = RCAR_GP_PIN(4, 23), /* RX1_A */
+ [ 9] = RCAR_GP_PIN(4, 22), /* SCK1_A */
+ [10] = RCAR_GP_PIN(4, 21), /* TX0_A */
+ [11] = RCAR_GP_PIN(4, 20), /* RX0_A */
+ [12] = RCAR_GP_PIN(4, 19), /* SCK0_A */
+ [13] = RCAR_GP_PIN(4, 18), /* MSIOF1_RXD */
+ [14] = RCAR_GP_PIN(4, 17), /* MSIOF1_TXD */
+ [15] = RCAR_GP_PIN(4, 16), /* MSIOF1_SCK */
+ [16] = RCAR_GP_PIN(4, 15), /* MSIOF0_RXD */
+ [17] = RCAR_GP_PIN(4, 14), /* MSIOF0_TXD */
+ [18] = RCAR_GP_PIN(4, 13), /* MSIOF0_SYNC */
+ [19] = RCAR_GP_PIN(4, 12), /* MSIOF0_SCK */
+ [20] = RCAR_GP_PIN(4, 11), /* SDA1 */
+ [21] = RCAR_GP_PIN(4, 10), /* SCL1 */
+ [22] = RCAR_GP_PIN(4, 9), /* SDA0 */
+ [23] = RCAR_GP_PIN(4, 8), /* SCL0 */
+ [24] = RCAR_GP_PIN(4, 7), /* SSI_WS4_A */
+ [25] = RCAR_GP_PIN(4, 6), /* SSI_SDATA4_A */
+ [26] = RCAR_GP_PIN(4, 5), /* SSI_SCK4_A */
+ [27] = RCAR_GP_PIN(4, 4), /* SSI_WS34 */
+ [28] = RCAR_GP_PIN(4, 3), /* SSI_SDATA3 */
+ [29] = RCAR_GP_PIN(4, 2), /* SSI_SCK34 */
+ [30] = RCAR_GP_PIN(4, 1), /* AUDIO_CLKA */
+ [31] = RCAR_GP_PIN(3, 9), /* NFDATA7 */
+ } },
+ { PINMUX_BIAS_REG("PUEN4", 0xe6060410, "PUD4", 0xe6060450) {
+ [ 0] = RCAR_GP_PIN(6, 10), /* QSPI1_IO3 */
+ [ 1] = RCAR_GP_PIN(6, 9), /* QSPI1_IO2 */
+ [ 2] = RCAR_GP_PIN(6, 8), /* QSPI1_MISO_IO1 */
+ [ 3] = RCAR_GP_PIN(6, 7), /* QSPI1_MOSI_IO0 */
+ [ 4] = RCAR_GP_PIN(6, 6), /* QSPI1_SPCLK */
+ [ 5] = RCAR_GP_PIN(6, 5), /* QSPI0_SSL */
+ [ 6] = RCAR_GP_PIN(6, 4), /* QSPI0_IO3 */
+ [ 7] = RCAR_GP_PIN(6, 3), /* QSPI0_IO2 */
+ [ 8] = RCAR_GP_PIN(6, 2), /* QSPI0_MISO_IO1 */
+ [ 9] = RCAR_GP_PIN(6, 1), /* QSPI0_MOSI_IO0 */
+ [10] = RCAR_GP_PIN(6, 0), /* QSPI0_SPCLK */
+ [11] = RCAR_GP_PIN(5, 20), /* AVB0_LINK */
+ [12] = RCAR_GP_PIN(5, 19), /* AVB0_PHY_INT */
+ [13] = RCAR_GP_PIN(5, 18), /* AVB0_MAGIC */
+ [14] = RCAR_GP_PIN(5, 17), /* AVB0_MDC */
+ [15] = RCAR_GP_PIN(5, 16), /* AVB0_MDIO */
+ [16] = RCAR_GP_PIN(5, 15), /* AVB0_TXCREFCLK */
+ [17] = RCAR_GP_PIN(5, 14), /* AVB0_TD3 */
+ [18] = RCAR_GP_PIN(5, 13), /* AVB0_TD2 */
+ [19] = RCAR_GP_PIN(5, 12), /* AVB0_TD1 */
+ [20] = RCAR_GP_PIN(5, 11), /* AVB0_TD0 */
+ [21] = RCAR_GP_PIN(5, 10), /* AVB0_TXC */
+ [22] = RCAR_GP_PIN(5, 9), /* AVB0_TX_CTL */
+ [23] = RCAR_GP_PIN(5, 8), /* AVB0_RD3 */
+ [24] = RCAR_GP_PIN(5, 7), /* AVB0_RD2 */
+ [25] = RCAR_GP_PIN(5, 6), /* AVB0_RD1 */
+ [26] = RCAR_GP_PIN(5, 5), /* AVB0_RD0 */
+ [27] = RCAR_GP_PIN(5, 4), /* AVB0_RXC */
+ [28] = RCAR_GP_PIN(5, 3), /* AVB0_RX_CTL */
+ [29] = RCAR_GP_PIN(4, 30), /* CAN1_TX_A */
+ [30] = RCAR_GP_PIN(4, 29), /* CAN1_RX_A */
+ [31] = RCAR_GP_PIN(4, 28), /* CAN0_TX_A */
+ } },
+ { PINMUX_BIAS_REG("PUEN5", 0xe6060414, "PUD4", 0xe6060454) {
+ [ 0] = SH_PFC_PIN_NONE,
+ [ 1] = SH_PFC_PIN_NONE,
+ [ 2] = SH_PFC_PIN_NONE,
+ [ 3] = SH_PFC_PIN_NONE,
+ [ 4] = SH_PFC_PIN_NONE,
+ [ 5] = SH_PFC_PIN_NONE,
+ [ 6] = SH_PFC_PIN_NONE,
+ [ 7] = SH_PFC_PIN_NONE,
+ [ 8] = SH_PFC_PIN_NONE,
+ [ 9] = SH_PFC_PIN_NONE,
+ [10] = SH_PFC_PIN_NONE,
+ [11] = SH_PFC_PIN_NONE,
+ [12] = SH_PFC_PIN_NONE,
+ [13] = SH_PFC_PIN_NONE,
+ [14] = SH_PFC_PIN_NONE,
+ [15] = SH_PFC_PIN_NONE,
+ [16] = SH_PFC_PIN_NONE,
+ [17] = SH_PFC_PIN_NONE,
+ [18] = SH_PFC_PIN_NONE,
+ [19] = SH_PFC_PIN_NONE,
+ [20] = SH_PFC_PIN_NONE,
+ [21] = SH_PFC_PIN_NONE,
+ [22] = SH_PFC_PIN_NONE,
+ [23] = SH_PFC_PIN_NONE,
+ [24] = SH_PFC_PIN_NONE,
+ [25] = SH_PFC_PIN_NONE,
+ [26] = SH_PFC_PIN_NONE,
+ [27] = SH_PFC_PIN_NONE,
+ [28] = SH_PFC_PIN_NONE,
+ [29] = RCAR_GP_PIN(6, 13), /* RPC_INT# */
+ [30] = RCAR_GP_PIN(6, 12), /* RPC_RESET# */
+ [31] = RCAR_GP_PIN(6, 11), /* QSPI1_SSL */
+ } },
+ { /* sentinel */ }
+};
+
enum ioctrl_regs {
TDSELCTRL,
};
@@ -2843,8 +3071,83 @@ static const struct pinmux_ioctrl_reg pinmux_ioctrl_regs[] = {
{ /* sentinel */ },
};
+static const struct pinmux_bias_reg *
+r8a77995_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin,
+ unsigned int *puen_bit, unsigned int *pud_bit)
+{
+ const struct pinmux_bias_reg *reg;
+ unsigned int bit;
+
+ reg = rcar_pin_to_bias_reg(pfc, pin, &bit);
+ if (!reg)
+ return reg;
+
+ *puen_bit = bit;
+
+ /* NFWE# and NFRE# use different bit positions in PUD2 */
+ switch (pin) {
+ case RCAR_GP_PIN(3, 0): /* NFRE# */
+ *pud_bit = 7;
+ break;
+
+ case RCAR_GP_PIN(3, 1): /* NFWE# */
+ *pud_bit = 8;
+ break;
+
+ default:
+ *pud_bit = bit;
+ break;
+ }
+
+ return reg;
+}
+
+static unsigned int r8a77995_pinmux_get_bias(struct sh_pfc *pfc,
+ unsigned int pin)
+{
+ const struct pinmux_bias_reg *reg;
+ unsigned int puen_bit, pud_bit;
+
+ reg = r8a77995_pin_to_bias_reg(pfc, pin, &puen_bit, &pud_bit);
+ if (!reg)
+ return PIN_CONFIG_BIAS_DISABLE;
+
+ if (!(sh_pfc_read(pfc, reg->puen) & BIT(puen_bit)))
+ return PIN_CONFIG_BIAS_DISABLE;
+ else if (sh_pfc_read(pfc, reg->pud) & BIT(pud_bit))
+ return PIN_CONFIG_BIAS_PULL_UP;
+ else
+ return PIN_CONFIG_BIAS_PULL_DOWN;
+}
+
+static void r8a77995_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin,
+ unsigned int bias)
+{
+ const struct pinmux_bias_reg *reg;
+ unsigned int puen_bit, pud_bit;
+ u32 enable, updown;
+
+ reg = r8a77995_pin_to_bias_reg(pfc, pin, &puen_bit, &pud_bit);
+ if (!reg)
+ return;
+
+ enable = sh_pfc_read(pfc, reg->puen) & ~BIT(puen_bit);
+ if (bias != PIN_CONFIG_BIAS_DISABLE) {
+ enable |= BIT(puen_bit);
+
+ updown = sh_pfc_read(pfc, reg->pud) & ~BIT(pud_bit);
+ if (bias == PIN_CONFIG_BIAS_PULL_UP)
+ updown |= BIT(pud_bit);
+
+ sh_pfc_write(pfc, reg->pud, updown);
+ }
+ sh_pfc_write(pfc, reg->puen, enable);
+}
+
static const struct sh_pfc_soc_operations r8a77995_pinmux_ops = {
.pin_to_pocctrl = r8a77995_pin_to_pocctrl,
+ .get_bias = r8a77995_pinmux_get_bias,
+ .set_bias = r8a77995_pinmux_set_bias,
};
const struct sh_pfc_soc_info r8a77995_pinmux_info = {
@@ -2862,6 +3165,7 @@ const struct sh_pfc_soc_info r8a77995_pinmux_info = {
.nr_functions = ARRAY_SIZE(pinmux_functions),
.cfg_regs = pinmux_config_regs,
+ .bias_regs = pinmux_bias_regs,
.ioctrl_regs = pinmux_ioctrl_regs,
.pinmux_data = pinmux_data,
diff --git a/drivers/pinctrl/renesas/pinctrl.c b/drivers/pinctrl/renesas/pinctrl.c
index 85cb78cfcfa6c37d..f3eecb20c0869a41 100644
--- a/drivers/pinctrl/renesas/pinctrl.c
+++ b/drivers/pinctrl/renesas/pinctrl.c
@@ -841,7 +841,7 @@ int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
return pinctrl_enable(pmx->pctl);
}
-static const struct pinmux_bias_reg *
+const struct pinmux_bias_reg *
rcar_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin,
unsigned int *bit)
{
diff --git a/drivers/pinctrl/renesas/sh_pfc.h b/drivers/pinctrl/renesas/sh_pfc.h
index 320898861c4b4c56..bf9822ef7e8c67b6 100644
--- a/drivers/pinctrl/renesas/sh_pfc.h
+++ b/drivers/pinctrl/renesas/sh_pfc.h
@@ -781,6 +781,9 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info;
/*
* Bias helpers
*/
+const struct pinmux_bias_reg *
+rcar_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin,
+ unsigned int *bit);
unsigned int rcar_pinmux_get_bias(struct sh_pfc *pfc, unsigned int pin);
void rcar_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin,
unsigned int bias);
--
2.25.1
