Add new APIs to register a simulated DSI panel. If the panel_simulation module is enabled, the DSI host will register the sim panel instead of the physical panel.
Signed-off-by: Jessica Zhang <[email protected]> --- drivers/gpu/drm/drm_mipi_dsi.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 2bc3973d35a19fc7dff7d578636821a1059bb7f9..95498b9bb8953066b0b1e9cfaa99d0b5b53e6cc8 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -153,6 +153,24 @@ static int mipi_dsi_device_add(struct mipi_dsi_device *dsi) return device_add(&dsi->dev); } +#if IS_ENABLED(CONFIG_DRM_PANEL_SIMULATION) +static struct mipi_dsi_device *mipi_dsi_device_add_sim_panel(struct mipi_dsi_host *host) +{ + struct mipi_dsi_device_info info = { }; + + info.channel = 0; + info.node = NULL; + strscpy(info.type, "panel_simulation", sizeof(info.type)); + + return mipi_dsi_device_register_full(host, &info); +} +#else +static struct mipi_dsi_device *mipi_dsi_device_add_sim_panel(struct mipi_dsi_host *host) +{ + return ERR_PTR(-ENODEV); +} +#endif + #if IS_ENABLED(CONFIG_OF) static struct mipi_dsi_device * of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node) @@ -324,10 +342,28 @@ struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node) } EXPORT_SYMBOL(of_find_mipi_dsi_host_by_node); +static int mipi_dsi_host_register_sim_panel(struct mipi_dsi_host *host) +{ + struct mipi_dsi_device *ret; + + ret = mipi_dsi_device_add_sim_panel(host); + if (IS_ERR(ret)) + return -EPROBE_DEFER; + + mutex_lock(&host_lock); + list_add_tail(&host->list, &host_list); + mutex_unlock(&host_lock); + + return 0; +} + int mipi_dsi_host_register(struct mipi_dsi_host *host) { struct device_node *node; + if (!mipi_dsi_host_register_sim_panel(host)) + return 0; + for_each_available_child_of_node(host->dev->of_node, node) { /* skip nodes without reg property */ if (!of_property_present(node, "reg")) -- 2.34.1
