[PATCH v7 13/16] tty: serial: samsung: Add gs101 compatible and common fifoszdt_serial_drv_data

From: Peter Griffin <peter.griffin@linaro.org>
To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
	mturquette@baylibre.com, conor+dt@kernel.org, sboyd@kernel.org,
	tomasz.figa@gmail.com, s.nawrocki@samsung.com,
	linus.walleij@linaro.org, wim@linux-watchdog.org,
	linux@roeck-us.net, catalin.marinas@arm.com, will@kernel.org,
	arnd@arndb.de, olof@lixom.net, gregkh@linuxfoundation.org,
	jirislaby@kernel.org, cw00.choi@samsung.com,
	alim.akhtar@samsung.com
Cc: peter.griffin@linaro.org, tudor.ambarus@linaro.org,
	andre.draszik@linaro.org, semen.protsenko@linaro.org,
	saravanak@google.com, willmcvicker@google.com, soc@kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-watchdog@vger.kernel.org,
	kernel-team@android.com, linux-serial@vger.kernel.org
Subject: [PATCH v7 13/16] tty: serial: samsung: Add gs101 compatible and common fifoszdt_serial_drv_data
Date: Mon, 11 Dec 2023 16:23:28 +0000	[thread overview]
Message-ID: <20231211162331.435900-14-peter.griffin@linaro.org> (raw)
In-Reply-To: <20231211162331.435900-1-peter.griffin@linaro.org>

Add serial driver data for Google Tensor gs101 SoC and a common
fifoszdt_serial_drv_data that can be used by platforms that specify the
samsung,uart-fifosize DT property.

A corresponding dt-bindings patch updates the yaml to ensure
samsung,uart-fifosize is a required property.

Tested-by: Will McVicker <willmcvicker@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
 drivers/tty/serial/samsung_tty.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 1b0c2b467a30..71d17d804fda 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -2490,14 +2490,25 @@ static const struct s3c24xx_serial_drv_data exynos850_serial_drv_data = {
 	.fifosize = { 256, 64, 64, 64 },
 };
 
+/*
+ * Common drv_data struct for platforms that specify samsung,uart-fifosize in
+ * device tree.
+ */
+static const struct s3c24xx_serial_drv_data exynos_fifoszdt_serial_drv_data = {
+	EXYNOS_COMMON_SERIAL_DRV_DATA(),
+	.fifosize = { 0 },
+};
+
 #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 EXYNOS_FIFOSZDT_DRV_DATA (&exynos_fifoszdt_serial_drv_data)
 
 #else
 #define EXYNOS4210_SERIAL_DRV_DATA NULL
 #define EXYNOS5433_SERIAL_DRV_DATA NULL
 #define EXYNOS850_SERIAL_DRV_DATA NULL
+#define EXYNOS_FIFOSZDT_DRV_DATA NULL
 #endif
 
 #ifdef CONFIG_ARCH_APPLE
@@ -2581,6 +2592,9 @@ static const struct platform_device_id s3c24xx_serial_driver_ids[] = {
 	}, {
 		.name		= "artpec8-uart",
 		.driver_data	= (kernel_ulong_t)ARTPEC8_SERIAL_DRV_DATA,
+	}, {
+		.name		= "gs101-uart",
+		.driver_data	= (kernel_ulong_t)EXYNOS_FIFOSZDT_DRV_DATA,
 	},
 	{ },
 };
@@ -2602,6 +2616,8 @@ static const struct of_device_id s3c24xx_uart_dt_match[] = {
 		.data = EXYNOS850_SERIAL_DRV_DATA },
 	{ .compatible = "axis,artpec8-uart",
 		.data = ARTPEC8_SERIAL_DRV_DATA },
+	{ .compatible = "google,gs101-uart",
+		.data = EXYNOS_FIFOSZDT_DRV_DATA },
 	{},
 };
 MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);
-- 
2.43.0.472.g3155946c3a-goog

