[U-Boot] [PATCH 2/9] video:mipidsim:fdt: Add DT support for mipi dsim driver
Minkyu Kang
mk7.kang at samsung.com
Fri Feb 7 08:53:00 CET 2014
On 27/01/14 23:15, Piotr Wilczek wrote:
> This patch enables parsing mipi data from device tree.
> Non device tree case is still supported.
>
> Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> Cc: Minkyu Kang <mk7.kang at samsung.com>
> ---
> arch/arm/include/asm/arch-exynos/mipi_dsim.h | 3 +
> drivers/video/exynos_mipi_dsi.c | 98 ++++++++++++++++++++++++++
> include/fdtdec.h | 1 +
> lib/fdtdec.c | 1 +
> 4 files changed, 103 insertions(+)
>
> diff --git a/arch/arm/include/asm/arch-exynos/mipi_dsim.h b/arch/arm/include/asm/arch-exynos/mipi_dsim.h
> index 40aca71..c9e8e06 100644
> --- a/arch/arm/include/asm/arch-exynos/mipi_dsim.h
> +++ b/arch/arm/include/asm/arch-exynos/mipi_dsim.h
> @@ -12,6 +12,7 @@
>
> #include <linux/list.h>
> #include <linux/fb.h>
> +#include <lcd.h>
>
> #define PANEL_NAME_SIZE (32)
>
> @@ -368,8 +369,10 @@ int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device
> *lcd_dev);
>
> void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd);
> +void exynos_init_dsim_platform_data(vidinfo_t *vid);
>
> /* panel driver init based on mipi dsi interface */
> void s6e8ax0_init(void);
>
> +extern int mipi_power(void);
> #endif /* _DSIM_H */
> diff --git a/drivers/video/exynos_mipi_dsi.c b/drivers/video/exynos_mipi_dsi.c
> index 8bb8fea..ab15ad6 100644
> --- a/drivers/video/exynos_mipi_dsi.c
> +++ b/drivers/video/exynos_mipi_dsi.c
> @@ -9,6 +9,8 @@
>
> #include <common.h>
> #include <malloc.h>
> +#include <fdtdec.h>
> +#include <libfdt.h>
> #include <linux/err.h>
> #include <asm/arch/dsim.h>
> #include <asm/arch/mipi_dsim.h>
> @@ -22,7 +24,12 @@
> #define master_to_driver(a) (a->dsim_lcd_drv)
> #define master_to_device(a) (a->dsim_lcd_dev)
>
> +DECLARE_GLOBAL_DATA_PTR;
> +
> static struct exynos_platform_mipi_dsim *dsim_pd;
> +static struct mipi_dsim_config dsim_config_dt;
> +static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
> +static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
>
> struct mipi_dsim_ddi {
> int bus_id;
> @@ -238,3 +245,94 @@ void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
>
> dsim_pd = pd;
> }
> +
> +#ifdef CONFIG_OF_CONTROL
> +int exynos_dsim_config_parse_dt(const void *blob)
> +{
> + int node;
> +
> + node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
> + if (node <= 0) {
> + printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
> + return -ENODEV;
> + }
> +
> + dsim_config_dt.e_interface = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-e_interface", 0);
> +
> + dsim_config_dt.e_virtual_ch = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-e_virtual_ch", 0);
> +
> + dsim_config_dt.e_pixel_format = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-e_pixel_format", 0);
> +
> + dsim_config_dt.e_burst_mode = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-e_burst_mode", 0);
> +
> + dsim_config_dt.e_no_data_lane = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-e_no_data_lane", 0);
> +
> + dsim_config_dt.e_byte_clk = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-e_byte_clk", 0);
> +
> + dsim_config_dt.hfp = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-hfp", 0);
> +
> + dsim_config_dt.p = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-p", 0);
> + dsim_config_dt.m = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-m", 0);
> + dsim_config_dt.s = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-s", 0);
> +
> + dsim_config_dt.pll_stable_time = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-pll_stable_time", 0);
> +
> + dsim_config_dt.esc_clk = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-esc_clk", 0);
> +
> + dsim_config_dt.stop_holding_cnt = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-stop_holding_cnt", 0);
> +
> + dsim_config_dt.bta_timeout = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-bta_timeout", 0);
> +
> + dsim_config_dt.rx_timeout = fdtdec_get_int(blob, node,
> + "samsung,dsim-config-rx_timeout", 0);
> +
> + mipi_lcd_device_dt.name = fdtdec_get_config_string(blob,
> + "samsung,dsim-device-name");
> +
> + mipi_lcd_device_dt.id = fdtdec_get_int(blob, node,
> + "samsung,dsim-device-id", 0);
> +
> + mipi_lcd_device_dt.bus_id = fdtdec_get_int(blob, node,
> + "samsung,dsim-device-bus_id", 0);
> +
> + mipi_lcd_device_dt.reverse_panel = fdtdec_get_int(blob, node,
> + "samsung,dsim-device-reverse_panel", 0);
> +
> + return 0;
> +}
> +
> +void exynos_init_dsim_platform_data(vidinfo_t *vid)
> +{
> + if (exynos_dsim_config_parse_dt(gd->fdt_blob))
> + debug("Can't get proper dsim config.\n");
> +
> + strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
> + dsim_platform_data_dt.dsim_config = &dsim_config_dt;
> + dsim_platform_data_dt.mipi_power = mipi_power;
> + dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
> + dsim_platform_data_dt.lcd_panel_info = (void *)vid;
> +
> + mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
> + exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
> +
> +#ifdef CONFIG_S6E8AX0
> + s6e8ax0_init();
No.
Please don't init specific panel at here. looks weird.
> +#endif
> +
> + dsim_pd = &dsim_platform_data_dt;
> +}
> +#endif
> diff --git a/include/fdtdec.h b/include/fdtdec.h
> index 433d6a7..f12b4aa 100644
> --- a/include/fdtdec.h
> +++ b/include/fdtdec.h
> @@ -78,6 +78,7 @@ enum fdt_compat_id {
> COMPAT_SAMSUNG_EXYNOS5_USB3_PHY,/* Exynos phy controller for usb3.0 */
> COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */
> COMPAT_SAMSUNG_EXYNOS_FIMD, /* Exynos Display controller */
> + COMPAT_SAMSUNG_EXYNOS_MIPI_DSI, /* Exynos mipi dsi */
> COMPAT_SAMSUNG_EXYNOS5_DP, /* Exynos Display port controller */
> COMPAT_SAMSUNG_EXYNOS5_DWMMC, /* Exynos5 DWMMC controller */
> COMPAT_SAMSUNG_EXYNOS_SERIAL, /* Exynos UART */
> diff --git a/lib/fdtdec.c b/lib/fdtdec.c
> index 207314f..46e67ff 100644
> --- a/lib/fdtdec.c
> +++ b/lib/fdtdec.c
> @@ -51,6 +51,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
> COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
> COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
> COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
> + COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
> COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
> COMPAT(SAMSUNG_EXYNOS5_DWMMC, "samsung,exynos5250-dwmmc"),
> COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
>
Thanks,
Minkyu Kang.
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