[PATCH 1/3] drm/panel: add s6e63j0x03 LCD panel driver

[Hyungwon Hwang]

Please ignore this mail. I didn't know that "git send *" includes all
files in the subdirectories. I am very sorry for disturbing you.

Best regards,
Hyungwon Hwang

On Fri, 12 Jun 2015 21:59:14 +0900
Hyungwon Hwang <human.hwang at samsung.com> wrote:

> From: Inki Dae <inki.dae at samsung.com>
> 
> This patch adds MIPI-DSI based S6E63J0X03 AMOLED LCD panel driver
> which uses mipi_dsi bus to communicate with panel. The panel has
> 320×320 resolution in 1.63-inch physical panel. This panel is used in
> Samsung Galaxy Gear 2.
> 
> Signed-off-by: Inki Dae <inki.dae at samsung.com>
> Signed-off-by: Hyungwon Hwang <human.hwang at samsung.com>
> Acked-by: Kyungmin Park <kyungmin.park at samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_dsi.c | 31
> +++++++++++++++++++------------
> drivers/gpu/drm/panel/Kconfig           |  6 ++++++
> drivers/gpu/drm/panel/Makefile          |  1 + 3 files changed, 26
> insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 5576cc3..6cb4887
> 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> @@ -743,6 +743,14 @@ static void exynos_dsi_disable_clock(struct
> exynos_dsi *dsi) DSI_WRITE(dsi, DSIM_PLLCTRL_REG, reg);
>  }
>  
> +static void exynos_dsi_enable_lane(struct exynos_dsi *dsi, u32 lane)
> +{
> +	u32 reg = DSI_READ(dsi, DSIM_CONFIG_REG);
> +	reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) |
> DSIM_LANE_EN_CLK |
> +			DSIM_LANE_EN(lane));
> +	DSI_WRITE(dsi, DSIM_CONFIG_REG, reg);
> +}
> +
>  static int exynos_dsi_init_link(struct exynos_dsi *dsi)
>  {
>  	struct exynos_dsi_driver_data *driver_data =
> dsi->driver_data; @@ -815,17 +823,6 @@ static int
> exynos_dsi_init_link(struct exynos_dsi *dsi) return -EINVAL;
>  	}
>  
> -	reg |= DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1);
> -
> -	DSI_WRITE(dsi, DSIM_CONFIG_REG, reg);
> -
> -	reg |= DSIM_LANE_EN_CLK;
> -	DSI_WRITE(dsi, DSIM_CONFIG_REG, reg);
> -
> -	lanes_mask = BIT(dsi->lanes) - 1;
> -	reg |= DSIM_LANE_EN(lanes_mask);
> -	DSI_WRITE(dsi, DSIM_CONFIG_REG, reg);
> -
>  	/*
>  	 * Use non-continuous clock mode if the periparal wants and
>  	 * host controller supports
> @@ -837,8 +834,11 @@ static int exynos_dsi_init_link(struct
> exynos_dsi *dsi) if (driver_data->has_clklane_stop &&
>  			dsi->mode_flags &
> MIPI_DSI_CLOCK_NON_CONTINUOUS) { reg |= DSIM_CLKLANE_STOP;
> -		DSI_WRITE(dsi, DSIM_CONFIG_REG, reg);
>  	}
> +	DSI_WRITE(dsi, DSIM_CONFIG_REG, reg);
> +
> +	lanes_mask = BIT(dsi->lanes) - 1;
> +	exynos_dsi_enable_lane(dsi, lanes_mask);
>  
>  	/* Check clock and data lane state are stop state */
>  	timeout = 100;
> @@ -1301,6 +1301,10 @@ static int exynos_dsi_init(struct exynos_dsi
> *dsi) 
>  	exynos_dsi_reset(dsi);
>  	exynos_dsi_enable_irq(dsi);
> +
> +	if (driver_data->values[RESET_TYPE] == DSIM_FUNCRST)
> +		exynos_dsi_enable_lane(dsi, BIT(dsi->lanes) - 1);
> +
>  	exynos_dsi_enable_clock(dsi);
>  	if (driver_data->wait_for_reset)
>  		exynos_dsi_wait_for_reset(dsi);
> @@ -1893,6 +1897,9 @@ static int exynos_dsi_probe(struct
> platform_device *pdev) dsi->clks = devm_kzalloc(dev,
>  			sizeof(*dsi->clks) *
> dsi->driver_data->num_clks, GFP_KERNEL);
> +	if (!dsi->clks)
> +		goto err_del_component;
> +
>  	for (i = 0; i < dsi->driver_data->num_clks; i++) {
>  		dsi->clks[i] = devm_clk_get(dev, clk_names[i]);
>  		if (IS_ERR(dsi->clks[i])) {
> diff --git a/drivers/gpu/drm/panel/Kconfig
> b/drivers/gpu/drm/panel/Kconfig index 6d64c7b..cb07bc6 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -43,4 +43,10 @@ config DRM_PANEL_SHARP_LQ101R1SX01
>  	  To compile this driver as a module, choose M here: the
> module will be called panel-sharp-lq101r1sx01.
>  
> +config DRM_PANEL_S6E63J0X03
> +	tristate "S6E63J0X03 DSI video mode panel"
> +	depends on OF
> +	select DRM_MIPI_DSI
> +	select VIDEOMODE_HELPERS
> +
>  endmenu
> diff --git a/drivers/gpu/drm/panel/Makefile
> b/drivers/gpu/drm/panel/Makefile index 4b2a043..27b0a90 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -2,3 +2,4 @@ obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
>  obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
>  obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
>  obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) +=
> panel-sharp-lq101r1sx01.o +obj-$(CONFIG_DRM_PANEL_S6E63J0X03) +=
> panel-s6e63j0x03.o