[PATCH 5/5] gpio: renesas: Add R-Car Gen5 support

[Marek Vasut]

From: Huy Bui <huy.bui.wm at renesas.com>

Add support for the GPIO controller block in the R-Car Gen5 SoC family.
The GPIO controller has a General Input Enable Register (INEN), whose
reset state is to have all input disabled. The GPIO controller also has
updated offsets for its control registers. U-Boot uses three registers,
INDT, POSNEG, INEN, which have updated offsets, those are handled by the
driver.

Signed-off-by: Huy Bui <huy.bui.wm at renesas.com>
Signed-off-by: Hai Pham <hai.pham.ud at renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
[Marek: - Access Gen5 specific registers via driver data offsets,
        - Update commit message]
---
Cc: Hai Pham <hai.pham.ud at renesas.com>
Cc: Huy Bui <huy.bui.wm at renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
Cc: Tom Rini <trini at konsulko.com>
Cc: u-boot at lists.denx.de
---
 drivers/gpio/gpio-rcar.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index f4eaf6f9c2d..c1ad20177f7 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -22,6 +22,10 @@
 #define GPIO_POSNEG_G2	0x20	/* Positive/Negative Logic Select Register */
 #define GPIO_INEN_G4	0x50	/* General Input Enable Register */
 
+#define GPIO_INDT_G5	0x1c	/* General Input Register */
+#define GPIO_POSNEG_G5	0x90	/* Positive/Negative Logic Select Register */
+#define GPIO_INEN_G5	0x18	/* General Input Enable Register */
+
 #define RCAR_MAX_GPIO_PER_BANK		32
 
 #define RCAR_GPIO_HAS_INEN		BIT(0)
@@ -184,6 +188,13 @@ static const struct rcar_gpio_data rcar_gpio_gen3_data = {
 	.inen_offset = GPIO_INEN_G4,
 };
 
+static const struct rcar_gpio_data rcar_gpio_gen5_data = {
+	.quirks = RCAR_GPIO_HAS_INEN,
+	.indt_offset = GPIO_INDT_G5,
+	.posneg_offset = GPIO_POSNEG_G5,
+	.inen_offset = GPIO_INEN_G5,
+};
+
 static const struct udevice_id rcar_gpio_ids[] = {
 	{ .compatible = "renesas,gpio-r8a7795", .data = (ulong)&rcar_gpio_gen2_data },
 	{ .compatible = "renesas,gpio-r8a7796", .data = (ulong)&rcar_gpio_gen2_data },
@@ -195,6 +206,7 @@ static const struct udevice_id rcar_gpio_ids[] = {
 	{ .compatible = "renesas,rcar-gen2-gpio", .data = (ulong)&rcar_gpio_gen2_data },
 	{ .compatible = "renesas,rcar-gen3-gpio", .data = (ulong)&rcar_gpio_gen2_data },
 	{ .compatible = "renesas,rcar-gen4-gpio", .data = (ulong)&rcar_gpio_gen3_data },
+	{ .compatible = "renesas,rcar-gen5-gpio", .data = (ulong)&rcar_gpio_gen5_data },
 	{ /* sentinel */ }
 };
 
-- 
2.51.0