pinctrl: renesas: r8a77995: Add QSPI and RPC pins, groups, and functions

Add pins, groups, and functions for the SPI Multi I/O Bus Controller
(RPC-IF) to the R8A77995 PFC driver.  They are to be used when a QSPI
Flash, Octal-SPI Flash, or HyperFlash is connected.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/19a3bccd0ec830846578a38b4c80dccb195109a0.1648547080.git.geert+renesas@glider.be

drivers/pinctrl/renesas/pfc-r8a77995.c

@@ -1682,6 +1682,68 @@ static const unsigned int pwm3_c_mux[] = {
 	PWM3_C_MARK,
 };
 
+/* - QSPI0 ------------------------------------------------------------------ */
+static const unsigned int qspi0_ctrl_pins[] = {
+	/* QSPI0_SPCLK, QSPI0_SSL */
+	RCAR_GP_PIN(6, 0), RCAR_GP_PIN(6, 5),
+};
+static const unsigned int qspi0_ctrl_mux[] = {
+	QSPI0_SPCLK_MARK, QSPI0_SSL_MARK,
+};
+/* - QSPI1 ------------------------------------------------------------------ */
+static const unsigned int qspi1_ctrl_pins[] = {
+	/* QSPI1_SPCLK, QSPI1_SSL */
+	RCAR_GP_PIN(6, 6), RCAR_GP_PIN(6, 11),
+};
+static const unsigned int qspi1_ctrl_mux[] = {
+	QSPI1_SPCLK_MARK, QSPI1_SSL_MARK,
+};
+
+/* - RPC -------------------------------------------------------------------- */
+static const unsigned int rpc_clk_pins[] = {
+	/* Octal-SPI flash: C/SCLK */
+	/* HyperFlash: CK, CK# */
+	RCAR_GP_PIN(6, 0), RCAR_GP_PIN(6, 6),
+};
+static const unsigned int rpc_clk_mux[] = {
+	QSPI0_SPCLK_MARK, QSPI1_SPCLK_MARK,
+};
+static const unsigned int rpc_ctrl_pins[] = {
+	/* Octal-SPI flash: S#/CS, DQS */
+	/* HyperFlash: CS#, RDS */
+	RCAR_GP_PIN(6, 5), RCAR_GP_PIN(6, 11),
+};
+static const unsigned int rpc_ctrl_mux[] = {
+	QSPI0_SSL_MARK, QSPI1_SSL_MARK,
+};
+static const unsigned int rpc_data_pins[] = {
+	/* DQ[0:7] */
+	RCAR_GP_PIN(6, 1), RCAR_GP_PIN(6, 2),
+	RCAR_GP_PIN(6, 3), RCAR_GP_PIN(6, 4),
+	RCAR_GP_PIN(6, 7), RCAR_GP_PIN(6, 8),
+	RCAR_GP_PIN(6, 9), RCAR_GP_PIN(6, 10),
+};
+static const unsigned int rpc_data_mux[] = {
+	QSPI0_MOSI_IO0_MARK, QSPI0_MISO_IO1_MARK,
+	QSPI0_IO2_MARK, QSPI0_IO3_MARK,
+	QSPI1_MOSI_IO0_MARK, QSPI1_MISO_IO1_MARK,
+	QSPI1_IO2_MARK, QSPI1_IO3_MARK,
+};
+static const unsigned int rpc_reset_pins[] = {
+	/* RPC_RESET# */
+	RCAR_GP_PIN(6, 12),
+};
+static const unsigned int rpc_reset_mux[] = {
+	RPC_RESET_N_MARK,
+};
+static const unsigned int rpc_int_pins[] = {
+	/* RPC_INT# */
+	RCAR_GP_PIN(6, 13),
+};
+static const unsigned int rpc_int_mux[] = {
+	RPC_INT_N_MARK,
+};
+
 /* - SCIF0 ------------------------------------------------------------------ */
 static const unsigned int scif0_data_a_pins[] = {
 	/* RX, TX */
@@ -2085,6 +2147,18 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(pwm3_a),
 	SH_PFC_PIN_GROUP(pwm3_b),
 	SH_PFC_PIN_GROUP(pwm3_c),
+	SH_PFC_PIN_GROUP(qspi0_ctrl),
+	SH_PFC_PIN_GROUP_SUBSET(qspi0_data2, rpc_data, 0, 2),
+	SH_PFC_PIN_GROUP_SUBSET(qspi0_data4, rpc_data, 0, 4),
+	SH_PFC_PIN_GROUP(qspi1_ctrl),
+	SH_PFC_PIN_GROUP_SUBSET(qspi1_data2, rpc_data, 4, 2),
+	SH_PFC_PIN_GROUP_SUBSET(qspi1_data4, rpc_data, 4, 4),
+	BUS_DATA_PIN_GROUP(rpc_clk, 1),
+	BUS_DATA_PIN_GROUP(rpc_clk, 2),
+	SH_PFC_PIN_GROUP(rpc_ctrl),
+	SH_PFC_PIN_GROUP(rpc_data),
+	SH_PFC_PIN_GROUP(rpc_reset),
+	SH_PFC_PIN_GROUP(rpc_int),
 	SH_PFC_PIN_GROUP(scif0_data_a),
 	SH_PFC_PIN_GROUP(scif0_clk_a),
 	SH_PFC_PIN_GROUP(scif0_data_b),
@@ -2277,6 +2351,27 @@ static const char * const pwm3_groups[] = {
 	"pwm3_c",
 };
 
+static const char * const qspi0_groups[] = {
+	"qspi0_ctrl",
+	"qspi0_data2",
+	"qspi0_data4",
+};
+
+static const char * const qspi1_groups[] = {
+	"qspi1_ctrl",
+	"qspi1_data2",
+	"qspi1_data4",
+};
+
+static const char * const rpc_groups[] = {
+	"rpc_clk1",
+	"rpc_clk2",
+	"rpc_ctrl",
+	"rpc_data",
+	"rpc_reset",
+	"rpc_int",
+};
+
 static const char * const scif0_groups[] = {
 	"scif0_data_a",
 	"scif0_clk_a",
@@ -2373,6 +2468,9 @@ static const struct sh_pfc_function pinmux_functions[] = {
 	SH_PFC_FUNCTION(pwm1),
 	SH_PFC_FUNCTION(pwm2),
 	SH_PFC_FUNCTION(pwm3),
+	SH_PFC_FUNCTION(qspi0),
+	SH_PFC_FUNCTION(qspi1),
+	SH_PFC_FUNCTION(rpc),
 	SH_PFC_FUNCTION(scif0),
 	SH_PFC_FUNCTION(scif1),
 	SH_PFC_FUNCTION(scif2),