Le 16/04/2024 à 20:30, David Wronek a écrit :
Add support for the 2560x1600@90Hz OLED panel by EDO bundled with a
Raydium RM69380 controller, as found on the Lenovo Xiaoxin Pad Pro 2021.
Signed-off-by: David Wronek <david-vu3dztd92roxwddmvfq...@public.gmane.org>
---
drivers/gpu/drm/panel/Kconfig | 14 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-raydium-rm69380.c | 367 ++++++++++++++++++++++++++
3 files changed, 382 insertions(+)
...
+static int rm69380_probe(struct mipi_dsi_device *dsi)
+{
+ struct mipi_dsi_host *dsi_sec_host;
+ struct rm69380_panel *ctx;
+ struct device *dev = &dsi->dev;
+ struct device_node *dsi_sec;
+ int ret, i;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supplies[0].supply = "vddio";
+ ctx->supplies[1].supply = "avdd";
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ dsi_sec = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);
+
+ if (dsi_sec) {
+ const struct mipi_dsi_device_info info = { "RM69380", 0,
+ dsi_sec };
+
+ dev_dbg(dev, "Using Dual-DSI: found `%s`\n", dsi_sec->name);
+
+ dsi_sec_host = of_find_mipi_dsi_host_by_node(dsi_sec);
+ of_node_put(dsi_sec);
+ if (!dsi_sec_host)
+ return dev_err_probe(dev, -EPROBE_DEFER,
+ "Cannot get secondary DSI host\n");
+
+ ctx->dsi[1] =
+ devm_mipi_dsi_device_register_full(dev, dsi_sec_host,
&info);
+ if (IS_ERR(ctx->dsi[1]))
+ return dev_err_probe(dev, PTR_ERR(ctx->dsi[1]),
+ "Cannot get secondary DSI node\n");
+
+ dev_dbg(dev, "Second DSI name `%s`\n", ctx->dsi[1]->name);
+ mipi_dsi_set_drvdata(ctx->dsi[1], ctx);
+ } else {
+ dev_dbg(dev, "Using Single-DSI\n");
+ }
+
+ ctx->dsi[0] = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ drm_panel_init(&ctx->panel, dev, &rm69380_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ ctx->panel.prepare_prev_first = true;
+
+ ctx->panel.backlight = rm69380_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+ "Failed to create backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
+ if (!ctx->dsi[i])
+ continue;
+
+ dev_dbg(&ctx->dsi[i]->dev, "Binding DSI %d\n", i);
+
+ ctx->dsi[i]->lanes = 4;
+ ctx->dsi[i]->format = MIPI_DSI_FMT_RGB888;
+ ctx->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+ ret = mipi_dsi_attach(ctx->dsi[i]);
+ if (ret < 0) {
+ mipi_dsi_detach(ctx->dsi[i]);
I don't think this works.
if 'i' fails, you have to detach 0...i-1
maybe something like below (complety untested).
+ drm_panel_remove(&ctx->panel);
+ return dev_err_probe(dev, ret,
+ "Failed to attach to DSI%d\n", i);
+ }
+ }
+
+ return 0;
+}
drm_panel_add(&ctx->panel);
for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
if (!ctx->dsi[i])
continue;
dev_dbg(&ctx->dsi[i]->dev, "Binding DSI %d\n", i);
ctx->dsi[i]->lanes = 4;
ctx->dsi[i]->format = MIPI_DSI_FMT_RGB888;
ctx->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_CLOCK_NON_CONTINUOUS;
ret = mipi_dsi_attach(ctx->dsi[i]);
if (ret < 0) {
dev_err_probe(dev, ret,
"Failed to attach to DSI%d\n", i);
goto err_detach_dsi;
}
}
return 0;
err_detach_dsi:
while (--i >= 0)
if (ctx->dsi[i])
mipi_dsi_detach(ctx->dsi[i]);
drm_panel_remove(&ctx->panel);
return ret;
}
