Implements pull-up and pull-down. On this SoC there is no simple mapping of
GP pins to bias register bits, so we need a table.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>
---
drivers/pinctrl/sh-pfc/pfc-r8a7795.c | 254 +++++++++++++++++++++++++++++++++--
1 file changed, 242 insertions(+), 12 deletions(-)
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
index b74cdd3..0f1a111 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
@@ -13,19 +13,23 @@
#include "core.h"
#include "sh_pfc.h"
+#define CFG_FLAGS (SH_PFC_PIN_CFG_DRIVE_STRENGTH | \
+ SH_PFC_PIN_CFG_PULL_UP | \
+ SH_PFC_PIN_CFG_PULL_DOWN)
+
#define CPU_ALL_PORT(fn, sfx) \
- PORT_GP_CFG_16(0, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_28(1, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_15(2, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_12(3, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH | SH_PFC_PIN_CFG_IO_VOLTAGE), \
- PORT_GP_CFG_1(3, 12, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_1(3, 13, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_1(3, 14, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_1(3, 15, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_18(4, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH | SH_PFC_PIN_CFG_IO_VOLTAGE), \
- PORT_GP_CFG_26(5, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_32(6, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH), \
- PORT_GP_CFG_4(7, fn, sfx, SH_PFC_PIN_CFG_DRIVE_STRENGTH)
+ PORT_GP_CFG_16(0, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_28(1, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_15(2, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_12(3, fn, sfx, CFG_FLAGS | SH_PFC_PIN_CFG_IO_VOLTAGE), \
+ PORT_GP_CFG_1(3, 12, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_1(3, 13, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_1(3, 14, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_1(3, 15, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_18(4, fn, sfx, CFG_FLAGS | SH_PFC_PIN_CFG_IO_VOLTAGE), \
+ PORT_GP_CFG_26(5, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_32(6, fn, sfx, CFG_FLAGS), \
+ PORT_GP_CFG_4(7, fn, sfx, CFG_FLAGS)
/*
* F_() : just information
* FM() : macro for FN_xxx / xxx_MARK
@@ -5073,8 +5077,234 @@ static int r8a7795_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin, u32 *poc
return bit;
}
+#define PUEN 0xe6060400
+#define PUD 0xe6060440
+
+#define PU0 0x00
+#define PU1 0x04
+#define PU2 0x08
+#define PU3 0x0c
+#define PU4 0x10
+#define PU5 0x14
+#define PU6 0x18
+
+static const struct {
+ u16 reg : 11;
+ u16 bit : 5;
+} pullups[] = {
+ [RCAR_GP_PIN(2, 11)] = { PU0, 31 }, /* AVB_PHY_INT */
+ [RCAR_GP_PIN(2, 10)] = { PU0, 30 }, /* AVB_MAGIC */
+ [RCAR_GP_PIN(2, 9)] = { PU0, 29 }, /* AVB_MDC */
+
+ [RCAR_GP_PIN(1, 19)] = { PU1, 31 }, /* A19 */
+ [RCAR_GP_PIN(1, 18)] = { PU1, 30 }, /* A18 */
+ [RCAR_GP_PIN(1, 17)] = { PU1, 29 }, /* A17 */
+ [RCAR_GP_PIN(1, 16)] = { PU1, 28 }, /* A16 */
+ [RCAR_GP_PIN(1, 15)] = { PU1, 27 }, /* A15 */
+ [RCAR_GP_PIN(1, 14)] = { PU1, 26 }, /* A14 */
+ [RCAR_GP_PIN(1, 13)] = { PU1, 25 }, /* A13 */
+ [RCAR_GP_PIN(1, 12)] = { PU1, 24 }, /* A12 */
+ [RCAR_GP_PIN(1, 11)] = { PU1, 23 }, /* A11 */
+ [RCAR_GP_PIN(1, 10)] = { PU1, 22 }, /* A10 */
+ [RCAR_GP_PIN(1, 9)] = { PU1, 21 }, /* A9 */
+ [RCAR_GP_PIN(1, 8)] = { PU1, 20 }, /* A8 */
+ [RCAR_GP_PIN(1, 7)] = { PU1, 19 }, /* A7 */
+ [RCAR_GP_PIN(1, 6)] = { PU1, 18 }, /* A6 */
+ [RCAR_GP_PIN(1, 5)] = { PU1, 17 }, /* A5 */
+ [RCAR_GP_PIN(1, 4)] = { PU1, 16 }, /* A4 */
+ [RCAR_GP_PIN(1, 3)] = { PU1, 15 }, /* A3 */
+ [RCAR_GP_PIN(1, 2)] = { PU1, 14 }, /* A2 */
+ [RCAR_GP_PIN(1, 1)] = { PU1, 13 }, /* A1 */
+ [RCAR_GP_PIN(1, 0)] = { PU1, 12 }, /* A0 */
+ [RCAR_GP_PIN(2, 8)] = { PU1, 11 }, /* PWM2_A */
+ [RCAR_GP_PIN(2, 7)] = { PU1, 10 }, /* PWM1_A */
+ [RCAR_GP_PIN(2, 6)] = { PU1, 9 }, /* PWM0 */
+ [RCAR_GP_PIN(2, 5)] = { PU1, 8 }, /* IRQ5 */
+ [RCAR_GP_PIN(2, 4)] = { PU1, 7 }, /* IRQ4 */
+ [RCAR_GP_PIN(2, 3)] = { PU1, 6 }, /* IRQ3 */
+ [RCAR_GP_PIN(2, 2)] = { PU1, 5 }, /* IRQ2 */
+ [RCAR_GP_PIN(2, 1)] = { PU1, 4 }, /* IRQ1 */
+ [RCAR_GP_PIN(2, 0)] = { PU1, 3 }, /* IRQ0 */
+ [RCAR_GP_PIN(2, 14)] = { PU1, 2 }, /* AVB_AVTP_CAPTURE_A */
+ [RCAR_GP_PIN(2, 13)] = { PU1, 1 }, /* AVB_AVTP_MATCH_A */
+ [RCAR_GP_PIN(2, 12)] = { PU1, 0 }, /* AVB_LINK */
+
+ [RCAR_GP_PIN(7, 3)] = { PU2, 29 }, /* HDMI1_CEC */
+ [RCAR_GP_PIN(7, 2)] = { PU2, 28 }, /* HDMI0_CEC */
+ [RCAR_GP_PIN(7, 1)] = { PU2, 27 }, /* AVS2 */
+ [RCAR_GP_PIN(7, 0)] = { PU2, 26 }, /* AVS1 */
+ [RCAR_GP_PIN(0, 15)] = { PU2, 25 }, /* D15 */
+ [RCAR_GP_PIN(0, 14)] = { PU2, 24 }, /* D14 */
+ [RCAR_GP_PIN(0, 13)] = { PU2, 23 }, /* D13 */
+ [RCAR_GP_PIN(0, 12)] = { PU2, 22 }, /* D12 */
+ [RCAR_GP_PIN(0, 11)] = { PU2, 21 }, /* D11 */
+ [RCAR_GP_PIN(0, 10)] = { PU2, 20 }, /* D10 */
+ [RCAR_GP_PIN(0, 9)] = { PU2, 19 }, /* D9 */
+ [RCAR_GP_PIN(0, 8)] = { PU2, 18 }, /* D8 */
+ [RCAR_GP_PIN(0, 7)] = { PU2, 17 }, /* D7 */
+ [RCAR_GP_PIN(0, 6)] = { PU2, 16 }, /* D6 */
+ [RCAR_GP_PIN(0, 5)] = { PU2, 15 }, /* D5 */
+ [RCAR_GP_PIN(0, 4)] = { PU2, 14 }, /* D4 */
+ [RCAR_GP_PIN(0, 3)] = { PU2, 13 }, /* D3 */
+ [RCAR_GP_PIN(0, 2)] = { PU2, 12 }, /* D2 */
+ [RCAR_GP_PIN(0, 1)] = { PU2, 11 }, /* D1 */
+ [RCAR_GP_PIN(0, 0)] = { PU2, 10 }, /* D0 */
+ [RCAR_GP_PIN(1, 27)] = { PU2, 8 }, /* EX_WAIT0_A */
+ [RCAR_GP_PIN(1, 26)] = { PU2, 7 }, /* WE1_N */
+ [RCAR_GP_PIN(1, 25)] = { PU2, 6 }, /* WE0_N */
+ [RCAR_GP_PIN(1, 24)] = { PU2, 5 }, /* RD_WR_N */
+ [RCAR_GP_PIN(1, 23)] = { PU2, 4 }, /* RD_N */
+ [RCAR_GP_PIN(1, 22)] = { PU2, 3 }, /* BS_N */
+ [RCAR_GP_PIN(1, 21)] = { PU2, 2 }, /* CS1_N_A26 */
+ [RCAR_GP_PIN(1, 20)] = { PU2, 1 }, /* CS0_N */
+
+ [RCAR_GP_PIN(4, 9)] = { PU3, 31 }, /* SD3_DAT0 */
+ [RCAR_GP_PIN(4, 8)] = { PU3, 30 }, /* SD3_CMD */
+ [RCAR_GP_PIN(4, 7)] = { PU3, 29 }, /* SD3_CLK */
+ [RCAR_GP_PIN(4, 6)] = { PU3, 28 }, /* SD2_DS */
+ [RCAR_GP_PIN(4, 5)] = { PU3, 27 }, /* SD2_DAT3 */
+ [RCAR_GP_PIN(4, 4)] = { PU3, 26 }, /* SD2_DAT2 */
+ [RCAR_GP_PIN(4, 3)] = { PU3, 25 }, /* SD2_DAT1 */
+ [RCAR_GP_PIN(4, 2)] = { PU3, 24 }, /* SD2_DAT0 */
+ [RCAR_GP_PIN(4, 1)] = { PU3, 23 }, /* SD2_CMD */
+ [RCAR_GP_PIN(4, 0)] = { PU3, 22 }, /* SD2_CLK */
+ [RCAR_GP_PIN(3, 11)] = { PU3, 21 }, /* SD1_DAT3 */
+ [RCAR_GP_PIN(3, 10)] = { PU3, 20 }, /* SD1_DAT2 */
+ [RCAR_GP_PIN(3, 9)] = { PU3, 19 }, /* SD1_DAT1 */
+ [RCAR_GP_PIN(3, 8)] = { PU3, 18 }, /* SD1_DAT0 */
+ [RCAR_GP_PIN(3, 7)] = { PU3, 17 }, /* SD1_CMD */
+ [RCAR_GP_PIN(3, 6)] = { PU3, 16 }, /* SD1_CLK */
+ [RCAR_GP_PIN(3, 5)] = { PU3, 15 }, /* SD0_DAT3 */
+ [RCAR_GP_PIN(3, 4)] = { PU3, 14 }, /* SD0_DAT2 */
+ [RCAR_GP_PIN(3, 3)] = { PU3, 13 }, /* SD0_DAT1 */
+ [RCAR_GP_PIN(3, 2)] = { PU3, 12 }, /* SD0_DAT0 */
+ [RCAR_GP_PIN(3, 1)] = { PU3, 11 }, /* SD0_CMD */
+ [RCAR_GP_PIN(3, 0)] = { PU3, 10 }, /* SD0_CLK */
+
+ [RCAR_GP_PIN(5, 19)] = { PU4, 31 }, /* MSIOF0_SS1 */
+ [RCAR_GP_PIN(5, 18)] = { PU4, 30 }, /* MSIOF0_SYNC */
+ [RCAR_GP_PIN(5, 17)] = { PU4, 29 }, /* MSIOF0_SCK */
+ [RCAR_GP_PIN(5, 16)] = { PU4, 28 }, /* HRTS0_N */
+ [RCAR_GP_PIN(5, 15)] = { PU4, 27 }, /* HCTS0_N */
+ [RCAR_GP_PIN(5, 14)] = { PU4, 26 }, /* HTX0 */
+ [RCAR_GP_PIN(5, 13)] = { PU4, 25 }, /* HRX0 */
+ [RCAR_GP_PIN(5, 12)] = { PU4, 24 }, /* HSCK0 */
+ [RCAR_GP_PIN(5, 11)] = { PU4, 23 }, /* RX2_A */
+ [RCAR_GP_PIN(5, 10)] = { PU4, 22 }, /* TX2_A */
+ [RCAR_GP_PIN(5, 9)] = { PU4, 21 }, /* SCK2 */
+ [RCAR_GP_PIN(5, 8)] = { PU4, 20 }, /* RTS1_N_TANS */
+ [RCAR_GP_PIN(5, 7)] = { PU4, 19 }, /* CTS1_N */
+ [RCAR_GP_PIN(5, 6)] = { PU4, 18 }, /* TX1_A */
+ [RCAR_GP_PIN(5, 5)] = { PU4, 17 }, /* RX1_A */
+ [RCAR_GP_PIN(5, 4)] = { PU4, 16 }, /* RTS0_N_TANS */
+ [RCAR_GP_PIN(5, 3)] = { PU4, 15 }, /* CTS0_N */
+ [RCAR_GP_PIN(5, 2)] = { PU4, 14 }, /* TX0 */
+ [RCAR_GP_PIN(5, 1)] = { PU4, 13 }, /* RX0 */
+ [RCAR_GP_PIN(5, 0)] = { PU4, 12 }, /* SCK0 */
+ [RCAR_GP_PIN(3, 15)] = { PU4, 11 }, /* SD1_WP */
+ [RCAR_GP_PIN(3, 14)] = { PU4, 10 }, /* SD1_CD */
+ [RCAR_GP_PIN(3, 13)] = { PU4, 9 }, /* SD0_WP */
+ [RCAR_GP_PIN(3, 12)] = { PU4, 8 }, /* SD0_CD */
+ [RCAR_GP_PIN(4, 17)] = { PU4, 7 }, /* SD3_DS */
+ [RCAR_GP_PIN(4, 16)] = { PU4, 6 }, /* SD3_DAT7 */
+ [RCAR_GP_PIN(4, 15)] = { PU4, 5 }, /* SD3_DAT6 */
+ [RCAR_GP_PIN(4, 14)] = { PU4, 4 }, /* SD3_DAT5 */
+ [RCAR_GP_PIN(4, 13)] = { PU4, 3 }, /* SD3_DAT4 */
+ [RCAR_GP_PIN(4, 12)] = { PU4, 2 }, /* SD3_DAT3 */
+ [RCAR_GP_PIN(4, 11)] = { PU4, 1 }, /* SD3_DAT2 */
+ [RCAR_GP_PIN(4, 10)] = { PU4, 0 }, /* SD3_DAT1 */
+
+ [RCAR_GP_PIN(6, 24)] = { PU5, 31 }, /* USB0_PWEN */
+ [RCAR_GP_PIN(6, 23)] = { PU5, 30 }, /* AUDIO_CLKB_B */
+ [RCAR_GP_PIN(6, 22)] = { PU5, 29 }, /* AUDIO_CLKA_A */
+ [RCAR_GP_PIN(6, 21)] = { PU5, 28 }, /* SSI_SDATA9_A */
+ [RCAR_GP_PIN(6, 20)] = { PU5, 27 }, /* SSI_SDATA8 */
+ [RCAR_GP_PIN(6, 19)] = { PU5, 26 }, /* SSI_SDATA7 */
+ [RCAR_GP_PIN(6, 18)] = { PU5, 25 }, /* SSI_WS78 */
+ [RCAR_GP_PIN(6, 17)] = { PU5, 24 }, /* SSI_SCK78 */
+ [RCAR_GP_PIN(6, 16)] = { PU5, 23 }, /* SSI_SDATA6 */
+ [RCAR_GP_PIN(6, 15)] = { PU5, 22 }, /* SSI_WS6 */
+ [RCAR_GP_PIN(6, 14)] = { PU5, 21 }, /* SSI_SCK6 */
+ [RCAR_GP_PIN(6, 13)] = { PU5, 20 }, /* SSI_SDATA5 */
+ [RCAR_GP_PIN(6, 12)] = { PU5, 19 }, /* SSI_WS5 */
+ [RCAR_GP_PIN(6, 11)] = { PU5, 18 }, /* SSI_SCK5 */
+ [RCAR_GP_PIN(6, 10)] = { PU5, 17 }, /* SSI_SDATA4 */
+ [RCAR_GP_PIN(6, 9)] = { PU5, 16 }, /* SSI_WS4 */
+ [RCAR_GP_PIN(6, 8)] = { PU5, 15 }, /* SSI_SCK4 */
+ [RCAR_GP_PIN(6, 7)] = { PU5, 14 }, /* SSI_SDATA3 */
+ [RCAR_GP_PIN(6, 6)] = { PU5, 13 }, /* SSI_WS34 */
+ [RCAR_GP_PIN(6, 5)] = { PU5, 12 }, /* SSI_SCK34 */
+ [RCAR_GP_PIN(6, 4)] = { PU5, 11 }, /* SSI_SDATA2_A */
+ [RCAR_GP_PIN(6, 3)] = { PU5, 10 }, /* SSI_SDATA1_A */
+ [RCAR_GP_PIN(6, 2)] = { PU5, 9 }, /* SSI_SDATA0 */
+ [RCAR_GP_PIN(6, 1)] = { PU5, 8 }, /* SSI_WS01239 */
+ [RCAR_GP_PIN(6, 0)] = { PU5, 7 }, /* SSI_SCK01239 */
+ [RCAR_GP_PIN(5, 25)] = { PU5, 5 }, /* MLB_DAT */
+ [RCAR_GP_PIN(5, 24)] = { PU5, 4 }, /* MLB_SIG */
+ [RCAR_GP_PIN(5, 23)] = { PU5, 3 }, /* MLB_CLK */
+ [RCAR_GP_PIN(5, 22)] = { PU5, 2 }, /* MSIOF0_RXD */
+ [RCAR_GP_PIN(5, 21)] = { PU5, 1 }, /* MSIOF0_SS2 */
+ [RCAR_GP_PIN(5, 20)] = { PU5, 0 }, /* MSIOF0_TXD */
+
+ [RCAR_GP_PIN(6, 31)] = { PU6, 6 }, /* USB31_OVC */
+ [RCAR_GP_PIN(6, 30)] = { PU6, 5 }, /* USB31_PWEN */
+ [RCAR_GP_PIN(6, 29)] = { PU6, 4 }, /* USB30_OVC */
+ [RCAR_GP_PIN(6, 28)] = { PU6, 3 }, /* USB30_PWEN */
+ [RCAR_GP_PIN(6, 27)] = { PU6, 2 }, /* USB1_OVC */
+ [RCAR_GP_PIN(6, 26)] = { PU6, 1 }, /* USB1_PWEN */
+ [RCAR_GP_PIN(6, 25)] = { PU6, 0 }, /* USB0_OVC */
+};
+
+static unsigned int r8a7795_pinmux_get_bias(struct sh_pfc *pfc,
+ unsigned int pin)
+{
+ u32 reg;
+ u32 bit;
+
+ if (WARN_ON_ONCE(!pullups[pin].reg))
+ return PIN_CONFIG_BIAS_DISABLE;
+
+ reg = pullups[pin].reg;
+ bit = BIT(pullups[pin].bit);
+
+ if (sh_pfc_read_reg(pfc, PUEN + reg, 32) & bit) {
+ if (sh_pfc_read_reg(pfc, PUD + reg, 32) & bit)
+ return PIN_CONFIG_BIAS_PULL_UP;
+ else
+ return PIN_CONFIG_BIAS_PULL_DOWN;
+ } else
+ return PIN_CONFIG_BIAS_DISABLE;
+}
+
+static void r8a7795_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin,
+ unsigned int bias)
+{
+ u32 enable, updown;
+ u32 reg;
+ u32 bit;
+
+ if (WARN_ON_ONCE(!pullups[pin].reg))
+ return;
+
+ reg = pullups[pin].reg;
+ bit = BIT(pullups[pin].bit);
+
+ enable = sh_pfc_read_reg(pfc, PUEN + reg, 32) & ~bit;
+ if (bias != PIN_CONFIG_BIAS_DISABLE)
+ enable |= bit;
+
+ updown = sh_pfc_read_reg(pfc, PUD + reg, 32) & ~bit;
+ if (bias == PIN_CONFIG_BIAS_PULL_UP)
+ updown |= bit;
+
+ sh_pfc_write_reg(pfc, PUD + reg, 32, updown);
+ sh_pfc_write_reg(pfc, PUEN + reg, 32, enable);
+}
+
static const struct sh_pfc_soc_operations r8a7795_pinmux_ops = {
.pin_to_pocctrl = r8a7795_pin_to_pocctrl,
+ .get_bias = r8a7795_pinmux_get_bias,
+ .set_bias = r8a7795_pinmux_set_bias,
};
const struct sh_pfc_soc_info r8a7795_pinmux_info = {
--
2.7.4
