diff mbox series

[v3,05/12] tty: serial: samsung: set UPIO_MEM32 iotype for gs101

Message ID 20240109125814.3691033-6-tudor.ambarus@linaro.org
State Superseded
Headers show
Series GS101 Oriole: CMU_PERIC0 support and USI updates | expand

Commit Message

Tudor Ambarus Jan. 9, 2024, 12:58 p.m. UTC
GS101's Connectivity Peripheral blocks (peric0/1 blocks) which
include the I3C and USI (I2C, SPI, UART) only allow 32-bit
register accesses.

Instead of specifying the reg-io-width = 4 everywhere, for each node,
the requirement should be deduced from the compatible.

Infer UPIO_MEM32 iotype from the "google,gs101-uart" compatible.
Update the uart info name to be GS101 specific in order to
differentiate from the other exynos platforms. All the other settings
are not changed.

exynos_fifoszdt_serial_drv_data was replaced by gs101_serial_drv_data
because the iotype restriction is gs101 specific and there was no other
user of exynos_fifoszdt_serial_drv_data.

Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
v3: collect Peter's R-b tag
v2: new patch

 drivers/tty/serial/samsung_tty.c | 38 +++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 10 deletions(-)

Comments

Krzysztof Kozlowski Jan. 10, 2024, 8:08 a.m. UTC | #1
On 09/01/2024 13:58, Tudor Ambarus wrote:
> GS101's Connectivity Peripheral blocks (peric0/1 blocks) which
> include the I3C and USI (I2C, SPI, UART) only allow 32-bit
> register accesses.
> 
> Instead of specifying the reg-io-width = 4 everywhere, for each node,
> the requirement should be deduced from the compatible.
> 
> Infer UPIO_MEM32 iotype from the "google,gs101-uart" compatible.
> Update the uart info name to be GS101 specific in order to
> differentiate from the other exynos platforms. All the other settings
> are not changed.
> 

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
Sam Protsenko Jan. 16, 2024, 6:10 p.m. UTC | #2
On Tue, Jan 9, 2024 at 7:00 AM Tudor Ambarus <tudor.ambarus@linaro.org> wrote:
>
> GS101's Connectivity Peripheral blocks (peric0/1 blocks) which
> include the I3C and USI (I2C, SPI, UART) only allow 32-bit
> register accesses.
>
> Instead of specifying the reg-io-width = 4 everywhere, for each node,
> the requirement should be deduced from the compatible.
>
> Infer UPIO_MEM32 iotype from the "google,gs101-uart" compatible.
> Update the uart info name to be GS101 specific in order to
> differentiate from the other exynos platforms. All the other settings
> are not changed.
>
> exynos_fifoszdt_serial_drv_data was replaced by gs101_serial_drv_data
> because the iotype restriction is gs101 specific and there was no other
> user of exynos_fifoszdt_serial_drv_data.
>
> Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
> Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
> ---

Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>

> v3: collect Peter's R-b tag
> v2: new patch
>
>  drivers/tty/serial/samsung_tty.c | 38 +++++++++++++++++++++++---------
>  1 file changed, 28 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
> index ff646cddd3f8..a81b61953a28 100644
> --- a/drivers/tty/serial/samsung_tty.c
> +++ b/drivers/tty/serial/samsung_tty.c
> @@ -2497,25 +2497,43 @@ 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(),
> +static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = {
> +       .info = {
> +               .name           = "Google GS101 UART",
> +               .type           = TYPE_S3C6400,
> +               .port_type      = PORT_S3C6400,
> +               .iotype         = UPIO_MEM32,
> +               .has_divslot    = 1,
> +               .rx_fifomask    = S5PV210_UFSTAT_RXMASK,
> +               .rx_fifoshift   = S5PV210_UFSTAT_RXSHIFT,
> +               .rx_fifofull    = S5PV210_UFSTAT_RXFULL,
> +               .tx_fifofull    = S5PV210_UFSTAT_TXFULL,
> +               .tx_fifomask    = S5PV210_UFSTAT_TXMASK,
> +               .tx_fifoshift   = S5PV210_UFSTAT_TXSHIFT,
> +               .def_clk_sel    = S3C2410_UCON_CLKSEL0,
> +               .num_clks       = 1,
> +               .clksel_mask    = 0,
> +               .clksel_shift   = 0,
> +       },
> +       .def_cfg = {
> +               .ucon           = S5PV210_UCON_DEFAULT,
> +               .ufcon          = S5PV210_UFCON_DEFAULT,
> +               .has_fracval    = 1,
> +       },
> +       /* samsung,uart-fifosize must be specified in the device tree. */
>         .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)
> +#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 EXYNOS_FIFOSZDT_DRV_DATA NULL
> +#define GS101_SERIAL_DRV_DATA NULL
>  #endif
>
>  #ifdef CONFIG_ARCH_APPLE
> @@ -2603,7 +2621,7 @@ static const struct platform_device_id s3c24xx_serial_driver_ids[] = {
>                 .driver_data    = (kernel_ulong_t)ARTPEC8_SERIAL_DRV_DATA,
>         }, {
>                 .name           = "gs101-uart",
> -               .driver_data    = (kernel_ulong_t)EXYNOS_FIFOSZDT_DRV_DATA,
> +               .driver_data    = (kernel_ulong_t)GS101_SERIAL_DRV_DATA,
>         },
>         { },
>  };
> @@ -2626,7 +2644,7 @@ static const struct of_device_id s3c24xx_uart_dt_match[] = {
>         { .compatible = "axis,artpec8-uart",
>                 .data = ARTPEC8_SERIAL_DRV_DATA },
>         { .compatible = "google,gs101-uart",
> -               .data = EXYNOS_FIFOSZDT_DRV_DATA },
> +               .data = GS101_SERIAL_DRV_DATA },
>         {},
>  };
>  MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);
> --
> 2.43.0.472.g3155946c3a-goog
>
>
diff mbox series

Patch

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index ff646cddd3f8..a81b61953a28 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -2497,25 +2497,43 @@  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(),
+static const struct s3c24xx_serial_drv_data gs101_serial_drv_data = {
+	.info = {
+		.name		= "Google GS101 UART",
+		.type		= TYPE_S3C6400,
+		.port_type	= PORT_S3C6400,
+		.iotype		= UPIO_MEM32,
+		.has_divslot	= 1,
+		.rx_fifomask	= S5PV210_UFSTAT_RXMASK,
+		.rx_fifoshift	= S5PV210_UFSTAT_RXSHIFT,
+		.rx_fifofull	= S5PV210_UFSTAT_RXFULL,
+		.tx_fifofull	= S5PV210_UFSTAT_TXFULL,
+		.tx_fifomask	= S5PV210_UFSTAT_TXMASK,
+		.tx_fifoshift	= S5PV210_UFSTAT_TXSHIFT,
+		.def_clk_sel	= S3C2410_UCON_CLKSEL0,
+		.num_clks	= 1,
+		.clksel_mask	= 0,
+		.clksel_shift	= 0,
+	},
+	.def_cfg = {
+		.ucon		= S5PV210_UCON_DEFAULT,
+		.ufcon		= S5PV210_UFCON_DEFAULT,
+		.has_fracval	= 1,
+	},
+	/* samsung,uart-fifosize must be specified in the device tree. */
 	.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)
+#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 EXYNOS_FIFOSZDT_DRV_DATA NULL
+#define GS101_SERIAL_DRV_DATA NULL
 #endif
 
 #ifdef CONFIG_ARCH_APPLE
@@ -2603,7 +2621,7 @@  static const struct platform_device_id s3c24xx_serial_driver_ids[] = {
 		.driver_data	= (kernel_ulong_t)ARTPEC8_SERIAL_DRV_DATA,
 	}, {
 		.name		= "gs101-uart",
-		.driver_data	= (kernel_ulong_t)EXYNOS_FIFOSZDT_DRV_DATA,
+		.driver_data	= (kernel_ulong_t)GS101_SERIAL_DRV_DATA,
 	},
 	{ },
 };
@@ -2626,7 +2644,7 @@  static const struct of_device_id s3c24xx_uart_dt_match[] = {
 	{ .compatible = "axis,artpec8-uart",
 		.data = ARTPEC8_SERIAL_DRV_DATA },
 	{ .compatible = "google,gs101-uart",
-		.data = EXYNOS_FIFOSZDT_DRV_DATA },
+		.data = GS101_SERIAL_DRV_DATA },
 	{},
 };
 MODULE_DEVICE_TABLE(of, s3c24xx_uart_dt_match);