Commit 4c4f33be authored by Chris Morgan's avatar Chris Morgan Committed by Neil Armstrong
Browse files

drm/panel: st7703: Add GameForce Chi Panel Support 



The GameForce Chi is a handheld device with a 3.5" 640x480 ST7703 based
display panel.

Signed-off-by: default avatarChris Morgan <macromorgan@hotmail.com>
Acked-by: default avatarJessica Zhang <quic_jesszhan@quicinc.com>
Link: https://lore.kernel.org/r/20240325134959.11807-4-macroalpha82@gmail.com


Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325134959.11807-4-macroalpha82@gmail.com
parent 387974a2

drivers/gpu/drm/panel/panel-sitronix-st7703.c

+87 −0
Original line number Diff line number Diff line
@@ -612,6 +612,92 @@ static const struct st7703_panel_desc rgb10max3_panel_desc = { 
	.init_sequence = rgb10max3_panel_init_sequence,

};



static int gameforcechi_init_sequence(struct st7703 *ctx)

{

	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);



	/*

	 * Init sequence was supplied by the panel vendor. Panel will not

	 * respond to commands until it is brought out of sleep mode first.

	 */



	mipi_dsi_dcs_exit_sleep_mode(dsi);

	msleep(250);



	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI, 0x31, 0x81, 0x05, 0xf9,

			       0x0e, 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,

			       0x00, 0x00, 0x44, 0x25, 0x00, 0x91, 0x0a, 0x00,

			       0x00, 0x02, 0x4f, 0xd1, 0x00, 0x00, 0x37);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, 0x25);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, 0x0c, 0x10, 0x0a,

			       0x50, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50,

			       0x00, 0x00, 0x08, 0x70, 0x00);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x46);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0b);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0x00, 0x13, 0xf0);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b,

			       0x03, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00,

			       0xc0, 0x10);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, 0x53, 0x00, 0x1e,

			       0x1e, 0x77, 0xe1, 0xcc, 0xdd, 0x67, 0x77, 0x33,

			       0x33);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x10, 0x10);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x6c, 0x7c);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1, 0x08, 0x00, 0x0e, 0x00,

			       0x00, 0xb0, 0xb1, 0x11, 0x31, 0x23, 0x28, 0x10,

			       0xb0, 0xb1, 0x27, 0x08, 0x00, 0x04, 0x02, 0x00,

			       0x00, 0x00, 0x00, 0x04, 0x02, 0x00, 0x00, 0x00,

			       0x88, 0x88, 0xba, 0x60, 0x24, 0x08, 0x88, 0x88,

			       0x88, 0x88, 0x88, 0x88, 0x88, 0xba, 0x71, 0x35,

			       0x18, 0x88, 0x88, 0x88, 0x88, 0x88, 0x00, 0x00,

			       0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

			       0x00, 0x00, 0x00);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2, 0x97, 0x0a, 0x82, 0x02,

			       0x13, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

			       0x80, 0x88, 0xba, 0x17, 0x53, 0x88, 0x88, 0x88,

			       0x88, 0x88, 0x88, 0x81, 0x88, 0xba, 0x06, 0x42,

			       0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x23, 0x10,

			       0x00, 0x02, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,

			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

			       0x00);

	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA, 0x00, 0x07, 0x0b,

			       0x27, 0x2d, 0x3f, 0x3b, 0x37, 0x05, 0x0a, 0x0b,

			       0x0f, 0x11, 0x0f, 0x12, 0x12, 0x18, 0x00, 0x07,

			       0x0b, 0x27, 0x2d, 0x3f, 0x3b, 0x37, 0x05, 0xa0,

			       0x0b, 0x0f, 0x11, 0x0f, 0x12, 0x12, 0x18);



	return 0;

}



static const struct drm_display_mode gameforcechi_mode = {

	.hdisplay	= 640,

	.hsync_start	= 640 + 40,

	.hsync_end	= 640 + 40 + 2,

	.htotal		= 640 + 40 + 2 + 80,

	.vdisplay	= 480,

	.vsync_start	= 480 + 17,

	.vsync_end	= 480 + 17 + 5,

	.vtotal		= 480 + 17 + 5 + 13,

	.clock		= 23546,

	.flags		= DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,

	.width_mm	= 71,

	.height_mm	= 53,

};



static const struct st7703_panel_desc gameforcechi_desc = {

	.mode = &gameforcechi_mode,

	.lanes = 2,

	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |

		      MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_LPM,

	.format = MIPI_DSI_FMT_RGB888,

	.init_sequence = gameforcechi_init_sequence,

};



static int st7703_enable(struct drm_panel *panel)

{

	struct st7703 *ctx = panel_to_st7703(panel);
@@ -887,6 +973,7 @@ static void st7703_remove(struct mipi_dsi_device *dsi) 


static const struct of_device_id st7703_of_match[] = {

	{ .compatible = "anbernic,rg353v-panel-v2", .data = &rg353v2_desc },

	{ .compatible = "gameforce,chi-panel", .data = &gameforcechi_desc },

	{ .compatible = "powkiddy,rgb10max3-panel", .data = &rgb10max3_panel_desc },

	{ .compatible = "powkiddy,rgb30-panel", .data = &rgb30panel_desc },

	{ .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc },