Commit a411558c authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Neil Armstrong
Browse files

drm/panel: sitronix-st7789v: add Inanbo T28CP45TN89 support 



UNI-T UTi260b has a Inanbo T28CP45TN89 v17 panel. I could not find
proper documentation for the panel apart from a technical drawing, but
according to the vendor U-Boot it is based on a Sitronix st7789v chip.
I generated the init sequence by modifying the default one until proper
graphics output has been seen on the device.

Reviewed-by: default avatarMichael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-14-sre@kernel.org
parent e4572f99

drivers/gpu/drm/panel/panel-sitronix-st7789v.c

+25 −0
Original line number Diff line number Diff line
@@ -173,6 +173,21 @@ static const struct drm_display_mode default_mode = { 
	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,

};



static const struct drm_display_mode t28cp45tn89_mode = {

	.clock = 6008,

	.hdisplay = 240,

	.hsync_start = 240 + 38,

	.hsync_end = 240 + 38 + 10,

	.htotal = 240 + 38 + 10 + 10,

	.vdisplay = 320,

	.vsync_start = 320 + 8,

	.vsync_end = 320 + 8 + 4,

	.vtotal = 320 + 8 + 4 + 4,

	.width_mm = 43,

	.height_mm = 57,

	.flags = DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC,

};



static const struct st7789_panel_info default_panel = {

	.mode = &default_mode,

	.invert_mode = true,
@@ -181,6 +196,14 @@ static const struct st7789_panel_info default_panel = { 
		     DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,

};



static const struct st7789_panel_info t28cp45tn89_panel = {

	.mode = &t28cp45tn89_mode,

	.invert_mode = false,

	.bus_format = MEDIA_BUS_FMT_RGB565_1X16,

	.bus_flags = DRM_BUS_FLAG_DE_HIGH |

		     DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,

};



static int st7789v_get_modes(struct drm_panel *panel,

			     struct drm_connector *connector)

{
@@ -446,12 +469,14 @@ static void st7789v_remove(struct spi_device *spi) 


static const struct spi_device_id st7789v_spi_id[] = {

	{ "st7789v", (unsigned long) &default_panel },

	{ "t28cp45tn89-v17", (unsigned long) &t28cp45tn89_panel },

	{ }

};

MODULE_DEVICE_TABLE(spi, st7789v_spi_id);



static const struct of_device_id st7789v_of_match[] = {

	{ .compatible = "sitronix,st7789v", .data = &default_panel },

	{ .compatible = "inanbo,t28cp45tn89-v17", .data = &t28cp45tn89_panel },

	{ }

};

MODULE_DEVICE_TABLE(of, st7789v_of_match);