From: Chris Morgan <macromorgan@xxxxxxxxxxx>
The GameForce Chi is a handheld device with a 3.5" 640x480 ST7703 based
display panel.
Signed-off-by: Chris Morgan <macromorgan@xxxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-sitronix-st7703.c | 87 +++++++++++++++++++
1 file changed, 87 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index a3e142f156d5..7d8302cca091 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -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 },
--
2.34.1
