Hi,
On Wed, Jul 01, 2020 at 12:31:19PM +0200, Ondrej Jirman wrote:
> Parametrize the driver so that it can support more panels based
> on st7703 controller.
Reviewed-by: Guido Günther <a...@sigxcpu.org>
>
> Signed-off-by: Ondrej Jirman <meg...@megous.com>
> Reviewed-by: Linus Walleij <linus.wall...@linaro.org>
> ---
> drivers/gpu/drm/panel/panel-sitronix-st7703.c | 43 +++++++++++++------
> 1 file changed, 31 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> index 511af659f273..08cbc316266c 100644
> --- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> @@ -13,6 +13,7 @@
> #include <linux/media-bus-format.h>
> #include <linux/mod_devicetable.h>
> #include <linux/module.h>
> +#include <linux/of_device.h>
> #include <linux/regulator/consumer.h>
>
> #include <video/display_timing.h>
> @@ -56,6 +57,15 @@ struct st7703 {
> bool prepared;
>
> struct dentry *debugfs;
> + const struct st7703_panel_desc *desc;
> +};
> +
> +struct st7703_panel_desc {
> + const struct drm_display_mode *mode;
> + unsigned int lanes;
> + unsigned long mode_flags;
> + enum mipi_dsi_pixel_format format;
> + int (*init_sequence)(struct st7703 *ctx);
> };
>
> static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
> @@ -148,7 +158,7 @@ static int st7703_enable(struct drm_panel *panel)
> struct st7703 *ctx = panel_to_st7703(panel);
> int ret;
>
> - ret = jh057n_init_sequence(ctx);
> + ret = ctx->desc->init_sequence(ctx);
> if (ret < 0) {
> DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
> ret);
> @@ -216,7 +226,7 @@ static int st7703_prepare(struct drm_panel *panel)
> return ret;
> }
>
> -static const struct drm_display_mode default_mode = {
> +static const struct drm_display_mode jh057n00900_mode = {
> .hdisplay = 720,
> .hsync_start = 720 + 90,
> .hsync_end = 720 + 90 + 20,
> @@ -232,17 +242,26 @@ static const struct drm_display_mode default_mode = {
> .height_mm = 130,
> };
>
> +struct st7703_panel_desc jh057n00900_panel_desc = {
> + .mode = &jh057n00900_mode,
> + .lanes = 4,
> + .mode_flags = MIPI_DSI_MODE_VIDEO |
> + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
> + .format = MIPI_DSI_FMT_RGB888,
> + .init_sequence = jh057n_init_sequence,
> +};
> +
> static int st7703_get_modes(struct drm_panel *panel,
> struct drm_connector *connector)
> {
> struct st7703 *ctx = panel_to_st7703(panel);
> struct drm_display_mode *mode;
>
> - mode = drm_mode_duplicate(connector->dev, &default_mode);
> + mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
> if (!mode) {
> DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
> - default_mode.hdisplay, default_mode.vdisplay,
> - default_mode.vrefresh);
> + ctx->desc->mode->hdisplay,
> ctx->desc->mode->vdisplay,
> + ctx->desc->mode->vrefresh);
> return -ENOMEM;
> }
>
> @@ -317,11 +336,11 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
> mipi_dsi_set_drvdata(dsi, ctx);
>
> ctx->dev = dev;
> + ctx->desc = of_device_get_match_data(dev);
>
> - dsi->lanes = 4;
> - dsi->format = MIPI_DSI_FMT_RGB888;
> - dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
> - MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
> + dsi->mode_flags = ctx->desc->mode_flags;
> + dsi->format = ctx->desc->format;
> + dsi->lanes = ctx->desc->lanes;
>
> ctx->vcc = devm_regulator_get(dev, "vcc");
> if (IS_ERR(ctx->vcc)) {
> @@ -361,8 +380,8 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
> }
>
> DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
> - default_mode.hdisplay, default_mode.vdisplay,
> - default_mode.vrefresh,
> + ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,
> + ctx->desc->mode->vrefresh,
> mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
>
> st7703_debugfs_init(ctx);
> @@ -405,7 +424,7 @@ static int st7703_remove(struct mipi_dsi_device *dsi)
> }
>
> static const struct of_device_id st7703_of_match[] = {
> - { .compatible = "rocktech,jh057n00900" },
> + { .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc
> },
> { /* sentinel */ }
> };
> MODULE_DEVICE_TABLE(of, st7703_of_match);
> --
> 2.27.0
>
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