[PATCH 2/4] pinctrl: sh-pfc: r8a7795: Support none GPIO pins with configurable drive-strength

[Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>]

There are pins on the Salvator-X which is not part of a GPIO bank nor
can be muxed between different functions. They do however allow for the
drive-strength to be configured. Add those pins to the list of pins and
to the drive-strength configuration registers.

The pins can now be referred to in DT by there physical location and the
drive-strength modified.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
 drivers/pinctrl/sh-pfc/pfc-r8a7795.c | 155 +++++++++++++++++++++++++++++++----
 1 file changed, 139 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
index b74cdd3..4a60f15 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7795.c
@@ -518,7 +518,22 @@ MOD_SEL0_3		MOD_SEL1_3 \
 MOD_SEL0_2_1		MOD_SEL1_2 \
 			MOD_SEL1_1 \
 			MOD_SEL1_0		MOD_SEL2_0
-
+/*
+ * These pins are not able to be muxed but have other properties
+ * that can be set, such as drive-strength or pull-up/pull-down enable.
+ */
+#define PINMUX_STATIC \
+	FM(QSPI0_SPCLK) FM(QSPI0_SSL) FM(QSPI0_MOSI_IO0) FM(QSPI0_MISO_IO1) \
+	FM(QSPI0_IO2) FM(QSPI0_IO3) \
+	FM(QSPI1_SPCLK) FM(QSPI1_SSL) FM(QSPI1_MOSI_IO0) FM(QSPI1_MISO_IO1) \
+	FM(QSPI1_IO2) FM(QSPI1_IO3) \
+	FM(RPC_INT) FM(RPC_WP) FM(RPC_RESET) \
+	FM(AVB_TX_CTL) FM(AVB_TXC) FM(AVB_TD0) FM(AVB_TD1) FM(AVB_TD2) FM(AVB_TD3) \
+	FM(AVB_RX_CTL) FM(AVB_RXC) FM(AVB_RD0) FM(AVB_RD1) FM(AVB_RD2) FM(AVB_RD3) \
+	FM(AVB_TXREFCLK) FM(AVB_MDIO) \
+	FM(CLKOUT) FM(PRESETOUT) \
+	FM(DU_DOTCLKIN0) FM(DU_DOTCLKIN1) FM(DU_DOTCLKIN2) FM(DU_DOTCLKIN3) \
+	FM(TMS) FM(TDO) FM(ASEBRK) FM(MLB_REF)
 
 enum {
 	PINMUX_RESERVED = 0,
@@ -544,6 +559,7 @@ enum {
 	PINMUX_GPSR
 	PINMUX_IPSR
 	PINMUX_MOD_SELS
+	PINMUX_STATIC
 	PINMUX_MARK_END,
 #undef F_
 #undef FM
@@ -1408,10 +1424,70 @@ static const u16 pinmux_data[] = {
 	PINMUX_IPSR_MSEL(IP17_7_4,	STP_ISSYNC_0_E,		SEL_SSP1_0_4),
 	PINMUX_IPSR_MSEL(IP17_7_4,	RIF2_D1_B,		SEL_DRIF2_1),
 	PINMUX_IPSR_GPSR(IP17_7_4,	TPU0TO3),
+
+/*
+ * Static pins can not be muxed between different functions but
+ * still needs a mark entry in the pinmux list. Add each static
+ * pin to the list without an associated function. The sh-pfc
+ * core will do the right thing and skip trying to mux then pin
+ * while still applying configuration to it
+ */
+#define FM(x)	PINMUX_DATA(x##_MARK, 0),
+	PINMUX_STATIC
+#undef FM
 };
 
+/*
+ * R8A7795 has 7 banks with 32 PGIOS in each = 224 GPIOs.
+ * Physical layout rows: A - AW, cols: 1 - 39.
+ */
+#define ROW_GROUP_A(r) ('Z' - 'A' + 1 + (r))
+#define PIN_NUMBER(r, c) (((r) - 'A') * 39 + (c) + 300)
+#define PIN_A_NUMBER(r, c) PIN_NUMBER(ROW_GROUP_A(r), c)
+
 static const struct sh_pfc_pin pinmux_pins[] = {
 	PINMUX_GPIO_GP_ALL(),
+
+	/* Pins not associated with a GPIO port */
+	SH_PFC_PIN_NAMED_CFG('A',  8,  A8, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TX_CTL */
+	SH_PFC_PIN_NAMED_CFG('A',  9,  A9, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_MDIO */
+	SH_PFC_PIN_NAMED_CFG('A', 12, A12, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TXCREFCLK */
+	SH_PFC_PIN_NAMED_CFG('A', 13, A13, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_RD0 */
+	SH_PFC_PIN_NAMED_CFG('A', 14, A14, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_RD2 */
+	SH_PFC_PIN_NAMED_CFG('A', 16, A16, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_RX_CTL */
+	SH_PFC_PIN_NAMED_CFG('A', 17, A17, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TD2 */
+	SH_PFC_PIN_NAMED_CFG('A', 18, A18, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TD0 */
+	SH_PFC_PIN_NAMED_CFG('A', 19, A19, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TXC */
+	SH_PFC_PIN_NAMED_CFG('B', 13, B13, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_RD1 */
+	SH_PFC_PIN_NAMED_CFG('B', 14, B14, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_RD3 */
+	SH_PFC_PIN_NAMED_CFG('B', 17, B17, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TD3 */
+	SH_PFC_PIN_NAMED_CFG('B', 18, B18, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_TD1 */
+	SH_PFC_PIN_NAMED_CFG('B', 19, B19, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* AVB_RXC */
+	SH_PFC_PIN_NAMED_CFG('C',  1,  C1, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* PRESETOUT# */
+	SH_PFC_PIN_NAMED_CFG('F',  1,  F1, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* CLKOUT */
+	SH_PFC_PIN_NAMED_CFG('H', 37, H37, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* MLB_REF */
+	SH_PFC_PIN_NAMED_CFG('V',  3,  V3, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* QSPI1_SPCLK */
+	SH_PFC_PIN_NAMED_CFG('V',  5,  V5, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* QSPI1_SSL */
+	SH_PFC_PIN_NAMED_CFG('V',  6,  V6, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* RPC_WP# */
+	SH_PFC_PIN_NAMED_CFG('V',  7,  V7, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* RPC_RESET# */
+	SH_PFC_PIN_NAMED_CFG('W',  3,  W3, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* QSPI0_SPCLK */
+	SH_PFC_PIN_NAMED_CFG('Y',  3,  Y3, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* QSPI0_SSL */
+	SH_PFC_PIN_NAMED_CFG('Y',  6,  Y6, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* QSPI0_IO2 */
+	SH_PFC_PIN_NAMED_CFG('Y',  7,  Y7, SH_PFC_PIN_CFG_DRIVE_STRENGTH),			/* RPC_INT# */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('B'),  4,  AB4, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI0_MISO_IO1 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('B'),  6,  AB6, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI0_IO3 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('C'),  3,  AC3, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI1_IO3 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('C'),  5,  AC5, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI0_MOSI_IO0 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('C'),  7,  AC7, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI1_MOSI_IO0 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('E'),  4,  AE4, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI1_IO2 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('E'),  5,  AE5, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* QSPI1_MISO_IO1 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('P'),  7,  AP7, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* DU_DOTCLKIN0 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('P'),  8,  AP8, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* DU_DOTCLKIN1 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('R'),  7,  AR7, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* DU_DOTCLKIN2 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('R'),  8,  AR8, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* DU_DOTCLKIN3 */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('R'), 30, AR30, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* TMS */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('T'), 28, AT28, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* TDO */
+	SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('T'), 30, AT30, SH_PFC_PIN_CFG_DRIVE_STRENGTH),	/* ASEBRK */
 };
 
 /* - AUDIO CLOCK ------------------------------------------------------------ */
@@ -4858,10 +4934,45 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 };
 
 static const struct pinmux_drive_reg pinmux_drive_regs[] = {
+	{ PINMUX_DRIVE_REG("DRVCTRL0", 0xe6060300) {
+		{ PIN_NUMBER('W', 3),   28, 2 },	/* QSPI0_SPCLK */
+		{ PIN_A_NUMBER('C', 5), 24, 2 },	/* QSPI0_MOSI_IO0 */
+		{ PIN_A_NUMBER('B', 4), 20, 2 },	/* QSPI0_MISO_IO1 */
+		{ PIN_NUMBER('Y', 6),   16, 2 },	/* QSPI0_IO2 */
+		{ PIN_A_NUMBER('B', 6), 12, 2 },	/* QSPI0_IO3 */
+		{ PIN_NUMBER('Y', 3),    8, 2 },	/* QSPI0_SSL */
+		{ PIN_NUMBER('V', 3),    4, 2 },	/* QSPI1_SPCLK */
+		{ PIN_A_NUMBER('C', 7),  0, 2 },	/* QSPI1_MOSI_IO0 */
+	} },
+	{ PINMUX_DRIVE_REG("DRVCTRL1", 0xe6060304) {
+		{ PIN_A_NUMBER('E', 5), 28, 2 },	/* QSPI1_MISO_IO1 */
+		{ PIN_A_NUMBER('E', 4), 24, 2 },	/* QSPI1_IO2 */
+		{ PIN_A_NUMBER('C', 3), 20, 2 },	/* QSPI1_IO3 */
+		{ PIN_NUMBER('V', 5),   16, 2 },	/* QSPI1_SSL */
+		{ PIN_NUMBER('Y', 7),   12, 2 },	/* RPC_INT# */
+		{ PIN_NUMBER('V', 6),    8, 2 },	/* RPC_WP# */
+		{ PIN_NUMBER('V', 7),    4, 2 },	/* RPC_RESET# */
+		{ PIN_NUMBER('A', 16),   0, 3 },	/* AVB_RX_CTL */
+	} },
+	{ PINMUX_DRIVE_REG("DRVCTRL2", 0xe6060308) {
+		{ PIN_NUMBER('B', 19),  28, 3 },	/* AVB_RXC */
+		{ PIN_NUMBER('A', 13),  24, 3 },	/* AVB_RD0 */
+		{ PIN_NUMBER('B', 13),  20, 3 },	/* AVB_RD1 */
+		{ PIN_NUMBER('A', 14),  16, 3 },	/* AVB_RD2 */
+		{ PIN_NUMBER('B', 14),  12, 3 },	/* AVB_RD3 */
+		{ PIN_NUMBER('A', 8),    8, 3 },	/* AVB_TX_CTL */
+		{ PIN_NUMBER('A', 19),   4, 3 },	/* AVB_TXC */
+		{ PIN_NUMBER('A', 18),   0, 3 },	/* AVB_TD0 */
+	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL3", 0xe606030c) {
-		{ RCAR_GP_PIN(2,  9),  8, 3 },	/* AVB_MDC */
-		{ RCAR_GP_PIN(2, 10),  4, 3 },	/* AVB_MAGIC */
-		{ RCAR_GP_PIN(2, 11),  0, 3 },	/* AVB_PHY_INT */
+		{ PIN_NUMBER('B', 18),  28, 3 },	/* AVB_TD1 */
+		{ PIN_NUMBER('A', 17),  24, 3 },	/* AVB_TD2 */
+		{ PIN_NUMBER('B', 17),  20, 3 },	/* AVB_TD3 */
+		{ PIN_NUMBER('A', 12),  16, 3 },	/* AVB_TXCREFCLK */
+		{ PIN_NUMBER('A', 9),   12, 3 },	/* AVB_MDIO */
+		{ RCAR_GP_PIN(2,  9),    8, 3 },	/* AVB_MDC */
+		{ RCAR_GP_PIN(2, 10),    4, 3 },	/* AVB_MAGIC */
+		{ RCAR_GP_PIN(2, 11),    0, 3 },	/* AVB_PHY_INT */
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL4", 0xe6060310) {
 		{ RCAR_GP_PIN(2, 12), 28, 3 },	/* AVB_LINK */
@@ -4904,6 +5015,7 @@ static const struct pinmux_drive_reg pinmux_drive_regs[] = {
 		{ RCAR_GP_PIN(1, 19),  0, 3 },	/* A19 */
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL8", 0xe6060320) {
+		{ PIN_NUMBER('F', 1), 28, 3 },	/* CLKOUT */
 		{ RCAR_GP_PIN(1, 20), 24, 3 },	/* CS0 */
 		{ RCAR_GP_PIN(1, 21), 20, 3 },	/* CS1_A26 */
 		{ RCAR_GP_PIN(1, 22), 16, 3 },	/* BS */
@@ -4914,6 +5026,7 @@ static const struct pinmux_drive_reg pinmux_drive_regs[] = {
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL9", 0xe6060324) {
 		{ RCAR_GP_PIN(1, 27), 28, 3 },	/* EX_WAIT0 */
+		{ PIN_NUMBER('C', 1), 24, 3 },	/* PRESETOUT# */
 		{ RCAR_GP_PIN(0,  0), 20, 3 },	/* D0 */
 		{ RCAR_GP_PIN(0,  1), 16, 3 },	/* D1 */
 		{ RCAR_GP_PIN(0,  2), 12, 3 },	/* D2 */
@@ -4932,20 +5045,29 @@ static const struct pinmux_drive_reg pinmux_drive_regs[] = {
 		{ RCAR_GP_PIN(0, 13),  0, 3 },	/* D13 */
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL11", 0xe606032c) {
-		{ RCAR_GP_PIN(0, 14), 28, 3 },	/* D14 */
-		{ RCAR_GP_PIN(0, 15), 24, 3 },	/* D15 */
-		{ RCAR_GP_PIN(7,  0), 20, 3 },	/* AVS1 */
-		{ RCAR_GP_PIN(7,  1), 16, 3 },	/* AVS2 */
-		{ RCAR_GP_PIN(7,  2), 12, 3 },	/* HDMI0_CEC */
-		{ RCAR_GP_PIN(7,  3),  8, 3 },	/* HDMI1_CEC */
+		{ RCAR_GP_PIN(0, 14),   28, 3 },	/* D14 */
+		{ RCAR_GP_PIN(0, 15),   24, 3 },	/* D15 */
+		{ RCAR_GP_PIN(7,  0),   20, 3 },	/* AVS1 */
+		{ RCAR_GP_PIN(7,  1),   16, 3 },	/* AVS2 */
+		{ RCAR_GP_PIN(7,  2),   12, 3 },	/* HDMI0_CEC */
+		{ RCAR_GP_PIN(7,  3),    8, 3 },	/* HDMI1_CEC */
+		{ PIN_A_NUMBER('P', 7),  4, 2 },	/* DU_DOTCLKIN0 */
+		{ PIN_A_NUMBER('P', 8),  0, 2 },	/* DU_DOTCLKIN1 */
+	} },
+	{ PINMUX_DRIVE_REG("DRVCTRL12", 0xe6060330) {
+		{ PIN_A_NUMBER('R', 7),  28, 2 },	/* DU_DOTCLKIN2 */
+		{ PIN_A_NUMBER('R', 8),  24, 2 },	/* DU_DOTCLKIN3 */
+		{ PIN_A_NUMBER('R', 30),  4, 2 },	/* TMS */
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL13", 0xe6060334) {
-		{ RCAR_GP_PIN(3,  0), 20, 3 },	/* SD0_CLK */
-		{ RCAR_GP_PIN(3,  1), 16, 3 },	/* SD0_CMD */
-		{ RCAR_GP_PIN(3,  2), 12, 3 },	/* SD0_DAT0 */
-		{ RCAR_GP_PIN(3,  3),  8, 3 },	/* SD0_DAT1 */
-		{ RCAR_GP_PIN(3,  4),  4, 3 },	/* SD0_DAT2 */
-		{ RCAR_GP_PIN(3,  5),  0, 3 },	/* SD0_DAT3 */
+		{ PIN_A_NUMBER('T', 28), 28, 2 },	/* TDO */
+		{ PIN_A_NUMBER('T', 30), 24, 2 },	/* ASEBRK */
+		{ RCAR_GP_PIN(3,  0),    20, 3 },	/* SD0_CLK */
+		{ RCAR_GP_PIN(3,  1),    16, 3 },	/* SD0_CMD */
+		{ RCAR_GP_PIN(3,  2),    12, 3 },	/* SD0_DAT0 */
+		{ RCAR_GP_PIN(3,  3),     8, 3 },	/* SD0_DAT1 */
+		{ RCAR_GP_PIN(3,  4),     4, 3 },	/* SD0_DAT2 */
+		{ RCAR_GP_PIN(3,  5),     0, 3 },	/* SD0_DAT3 */
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL14", 0xe6060338) {
 		{ RCAR_GP_PIN(3,  6), 28, 3 },	/* SD1_CLK */
@@ -5014,6 +5136,7 @@ static const struct pinmux_drive_reg pinmux_drive_regs[] = {
 		{ RCAR_GP_PIN(5, 23), 16, 3 },	/* MLB_CLK */
 		{ RCAR_GP_PIN(5, 24), 12, 3 },	/* MLB_SIG */
 		{ RCAR_GP_PIN(5, 25),  8, 3 },	/* MLB_DAT */
+		{ PIN_NUMBER('H', 37),  4, 3 },	/* MLB_REF */
 		{ RCAR_GP_PIN(6,  0),  0, 3 },	/* SSI_SCK01239 */
 	} },
 	{ PINMUX_DRIVE_REG("DRVCTRL21", 0xe6060354) {
-- 
2.9.3

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