pinctrl: sh-pfc: r8a77980: Add RPC pins, groups, and functions

Add the RPC pins/groups/functions to the R8A77980 PFC driver.
They can be used if an Octal-SPI flash or HyperFlash is connected.

Based on the patch by Dmitry Shifrin <dmitry.shifrin@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Link: https://lore.kernel.org/r/fd089d37-95bb-4ec9-282f-e04d7e5195e4@cogentembedded.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a77980.c b/drivers/pinctrl/sh-pfc/pfc-r8a77980.c
index 14fe403..1055f98 100644 (file)
--- a/drivers/pinctrl/sh-pfc/pfc-r8a77980.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a77980.c
@@ -1710,6 +1710,64 @@ static const unsigned int qspi1_data4_mux[] = {
        QSPI1_IO2_MARK, QSPI1_IO3_MARK
 };
 
+/* - RPC -------------------------------------------------------------------- */
+static const unsigned int rpc_clk1_pins[] = {
+       /* Octal-SPI flash: C/SCLK */
+       RCAR_GP_PIN(5, 0),
+};
+static const unsigned int rpc_clk1_mux[] = {
+       QSPI0_SPCLK_MARK,
+};
+static const unsigned int rpc_clk2_pins[] = {
+       /* HyperFlash: CK, CK# */
+       RCAR_GP_PIN(5, 0), RCAR_GP_PIN(5, 6),
+};
+static const unsigned int rpc_clk2_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(5, 5), RCAR_GP_PIN(5, 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(5, 1), RCAR_GP_PIN(5, 2),
+       RCAR_GP_PIN(5, 3), RCAR_GP_PIN(5, 4),
+       RCAR_GP_PIN(5, 7), RCAR_GP_PIN(5, 8),
+       RCAR_GP_PIN(5, 9), RCAR_GP_PIN(5, 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(5, 12),
+};
+static const unsigned int rpc_reset_mux[] = {
+       RPC_RESET_N_MARK,
+};
+static const unsigned int rpc_int_pins[] = {
+       /* RPC_INT# */
+       RCAR_GP_PIN(5, 14),
+};
+static const unsigned int rpc_int_mux[] = {
+       RPC_INT_N_MARK,
+};
+static const unsigned int rpc_wp_pins[] = {
+       /* RPC_WP# */
+       RCAR_GP_PIN(5, 13),
+};
+static const unsigned int rpc_wp_mux[] = {
+       RPC_WP_N_MARK,
+};
+
 /* - SCIF0 ------------------------------------------------------------------ */
 static const unsigned int scif0_data_pins[] = {
        /* RX0, TX0 */
@@ -2126,6 +2184,13 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
        SH_PFC_PIN_GROUP(qspi1_ctrl),
        SH_PFC_PIN_GROUP(qspi1_data2),
        SH_PFC_PIN_GROUP(qspi1_data4),
+       SH_PFC_PIN_GROUP(rpc_clk1),
+       SH_PFC_PIN_GROUP(rpc_clk2),
+       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(rpc_wp),
        SH_PFC_PIN_GROUP(scif0_data),
        SH_PFC_PIN_GROUP(scif0_clk),
        SH_PFC_PIN_GROUP(scif0_ctrl),
@@ -2362,6 +2427,16 @@ static const char * const qspi1_groups[] = {
        "qspi1_data4",
 };
 
+static const char * const rpc_groups[] = {
+       "rpc_clk1",
+       "rpc_clk2",
+       "rpc_ctrl",
+       "rpc_data",
+       "rpc_reset",
+       "rpc_int",
+       "rpc_wp",
+};
+
 static const char * const scif0_groups[] = {
        "scif0_data",
        "scif0_clk",
@@ -2460,6 +2535,7 @@ static const struct sh_pfc_function pinmux_functions[] = {
        SH_PFC_FUNCTION(pwm4),
        SH_PFC_FUNCTION(qspi0),
        SH_PFC_FUNCTION(qspi1),
+       SH_PFC_FUNCTION(rpc),
        SH_PFC_FUNCTION(scif0),
        SH_PFC_FUNCTION(scif1),
        SH_PFC_FUNCTION(scif3),