[PATCH v6 17/20] tty: serial: samsung: Add gs101 compatible and common fifoszdt_serial_drv_data

Peter Griffin
2023-12-09T23:31:42Z

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