linux-kernel - [PATCH v2 2/2] tty: serial: samsung: Add Exynos8895 compatible

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Message-ID: <20241023090902.538040-3-ivo.ivanov.ivanov1@gmail.com>
Date: Wed, 23 Oct 2024 12:09:02 +0300
From: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-samsung-soc@...r.kernel.org,
	linux-serial@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] tty: serial: samsung: Add Exynos8895 compatible

Add serial driver data for Exynos8895 SoC. The main difference from
other platforms is that fifosize is only specified via the
samsung,uart-fifosize DT property.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/tty/serial/samsung_tty.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 0d184ee2f..ce3c3ec34 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -2498,6 +2498,12 @@ static const struct s3c24xx_serial_drv_data exynos850_serial_drv_data = {
 	.fifosize = { 256, 64, 64, 64 },
 };
 
+static const struct s3c24xx_serial_drv_data exynos8895_serial_drv_data = {
+	EXYNOS_COMMON_SERIAL_DRV_DATA,
+	/* samsung,uart-fifosize must be specified in the device tree. */
+	.fifosize = { 0 },
+};
+
 static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = {
 	.info = {
 		.name		= "Google GS101 UART",
@@ -2528,12 +2534,14 @@ static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = {
 #define EXYNOS4210_SERIAL_DRV_DATA (&exynos4210_serial_drv_data)
 #define EXYNOS5433_SERIAL_DRV_DATA (&exynos5433_serial_drv_data)
 #define EXYNOS850_SERIAL_DRV_DATA (&exynos850_serial_drv_data)
+#define EXYNOS8895_SERIAL_DRV_DATA (&exynos8895_serial_drv_data)
 #define GS101_SERIAL_DRV_DATA (&gs101_serial_drv_data)
 
 #else
 #define EXYNOS4210_SERIAL_DRV_DATA NULL
 #define EXYNOS5433_SERIAL_DRV_DATA NULL
 #define EXYNOS850_SERIAL_DRV_DATA NULL
+#define EXYNOS8895_SERIAL_DRV_DATA NULL
 #define GS101_SERIAL_DRV_DATA NULL
 #endif
 
@@ -2623,6 +2631,9 @@ static const struct platform_device_id s3c24xx_serial_driver_ids[] = {
 	}, {
 		.name		= "gs101-uart",
 		.driver_data	= (kernel_ulong_t)GS101_SERIAL_DRV_DATA,
+	}, {
+		.name		= "exynos8895-uart",
+		.driver_data	= (kernel_ulong_t)EXYNOS8895_SERIAL_DRV_DATA,
 	},
 	{ },
 };
@@ -2646,6 +2657,8 @@ static const struct of_device_id s3c24xx_uart_dt_match[] = {
 		.data = ARTPEC8_SERIAL_DRV_DATA },
 	{ .compatible = "google,gs101-uart",
 		.data = GS101_SERIAL_DRV_DATA },
+	{ .compatible = "samsung,exynos8895-uart",
+		.data = EXYNOS8895_SERIAL_DRV_DATA },
 	{},
 };
 MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);
-- 
2.43.0