summaryrefslogtreecommitdiff
path: root/drivers/gpu
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/drm_bridge.c12
-rw-r--r--drivers/gpu/drm/drm_mipi_dsi.c127
-rw-r--r--drivers/gpu/drm/panel/panel-simple.c81
3 files changed, 204 insertions, 16 deletions
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index bd93453afa61..b3654404abd0 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -186,7 +186,8 @@ void drm_bridge_disable(struct drm_bridge *bridge)
drm_bridge_disable(bridge->next);
- bridge->funcs->disable(bridge);
+ if (bridge->funcs->disable)
+ bridge->funcs->disable(bridge);
}
EXPORT_SYMBOL(drm_bridge_disable);
@@ -206,7 +207,8 @@ void drm_bridge_post_disable(struct drm_bridge *bridge)
if (!bridge)
return;
- bridge->funcs->post_disable(bridge);
+ if (bridge->funcs->post_disable)
+ bridge->funcs->post_disable(bridge);
drm_bridge_post_disable(bridge->next);
}
@@ -256,7 +258,8 @@ void drm_bridge_pre_enable(struct drm_bridge *bridge)
drm_bridge_pre_enable(bridge->next);
- bridge->funcs->pre_enable(bridge);
+ if (bridge->funcs->pre_enable)
+ bridge->funcs->pre_enable(bridge);
}
EXPORT_SYMBOL(drm_bridge_pre_enable);
@@ -276,7 +279,8 @@ void drm_bridge_enable(struct drm_bridge *bridge)
if (!bridge)
return;
- bridge->funcs->enable(bridge);
+ if (bridge->funcs->enable)
+ bridge->funcs->enable(bridge);
drm_bridge_enable(bridge->next);
}
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 6e6a9c58d404..f5d80839a90c 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -47,7 +47,17 @@
static int mipi_dsi_device_match(struct device *dev, struct device_driver *drv)
{
- return of_driver_match_device(dev, drv);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
+
+ /* attempt OF style match */
+ if (of_driver_match_device(dev, drv))
+ return 1;
+
+ /* compare DSI device and driver names */
+ if (!strcmp(dsi->name, drv->name))
+ return 1;
+
+ return 0;
}
static const struct dev_pm_ops mipi_dsi_device_pm_ops = {
@@ -129,14 +139,20 @@ static int mipi_dsi_device_add(struct mipi_dsi_device *dsi)
return device_add(&dsi->dev);
}
+#if IS_ENABLED(CONFIG_OF)
static struct mipi_dsi_device *
of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
{
- struct mipi_dsi_device *dsi;
struct device *dev = host->dev;
+ struct mipi_dsi_device_info info = { };
int ret;
u32 reg;
+ if (of_modalias_node(node, info.type, sizeof(info.type)) < 0) {
+ dev_err(dev, "modalias failure on %s\n", node->full_name);
+ return ERR_PTR(-EINVAL);
+ }
+
ret = of_property_read_u32(node, "reg", &reg);
if (ret) {
dev_err(dev, "device node %s has no valid reg property: %d\n",
@@ -144,32 +160,111 @@ of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
return ERR_PTR(-EINVAL);
}
- if (reg > 3) {
- dev_err(dev, "device node %s has invalid reg property: %u\n",
- node->full_name, reg);
+ info.channel = reg;
+ info.node = of_node_get(node);
+
+ return mipi_dsi_device_register_full(host, &info);
+}
+#else
+static struct mipi_dsi_device *
+of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
+{
+ return ERR_PTR(-ENODEV);
+}
+#endif
+
+/**
+ * mipi_dsi_device_register_full - create a MIPI DSI device
+ * @host: DSI host to which this device is connected
+ * @info: pointer to template containing DSI device information
+ *
+ * Create a MIPI DSI device by using the device information provided by
+ * mipi_dsi_device_info template
+ *
+ * Returns:
+ * A pointer to the newly created MIPI DSI device, or, a pointer encoded
+ * with an error
+ */
+struct mipi_dsi_device *
+mipi_dsi_device_register_full(struct mipi_dsi_host *host,
+ const struct mipi_dsi_device_info *info)
+{
+ struct mipi_dsi_device *dsi;
+ struct device *dev = host->dev;
+ int ret;
+
+ if (!info) {
+ dev_err(dev, "invalid mipi_dsi_device_info pointer\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (info->channel > 3) {
+ dev_err(dev, "invalid virtual channel: %u\n", info->channel);
return ERR_PTR(-EINVAL);
}
dsi = mipi_dsi_device_alloc(host);
if (IS_ERR(dsi)) {
- dev_err(dev, "failed to allocate DSI device %s: %ld\n",
- node->full_name, PTR_ERR(dsi));
+ dev_err(dev, "failed to allocate DSI device %ld\n",
+ PTR_ERR(dsi));
return dsi;
}
- dsi->dev.of_node = of_node_get(node);
- dsi->channel = reg;
+ dsi->dev.of_node = info->node;
+ dsi->channel = info->channel;
+ strlcpy(dsi->name, info->type, sizeof(dsi->name));
ret = mipi_dsi_device_add(dsi);
if (ret) {
- dev_err(dev, "failed to add DSI device %s: %d\n",
- node->full_name, ret);
+ dev_err(dev, "failed to add DSI device %d\n", ret);
kfree(dsi);
return ERR_PTR(ret);
}
return dsi;
}
+EXPORT_SYMBOL(mipi_dsi_device_register_full);
+
+/**
+ * mipi_dsi_device_unregister - unregister MIPI DSI device
+ * @dsi: DSI peripheral device
+ */
+void mipi_dsi_device_unregister(struct mipi_dsi_device *dsi)
+{
+ device_unregister(&dsi->dev);
+}
+EXPORT_SYMBOL(mipi_dsi_device_unregister);
+
+static DEFINE_MUTEX(host_lock);
+static LIST_HEAD(host_list);
+
+/**
+ * of_find_mipi_dsi_host_by_node() - find the MIPI DSI host matching a
+ * device tree node
+ * @node: device tree node
+ *
+ * Returns:
+ * A pointer to the MIPI DSI host corresponding to @node or NULL if no
+ * such device exists (or has not been registered yet).
+ */
+struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node)
+{
+ struct mipi_dsi_host *host;
+
+ mutex_lock(&host_lock);
+
+ list_for_each_entry(host, &host_list, list) {
+ if (host->dev->of_node == node) {
+ mutex_unlock(&host_lock);
+ return host;
+ }
+ }
+
+ mutex_unlock(&host_lock);
+
+ return NULL;
+}
+EXPORT_SYMBOL(of_find_mipi_dsi_host_by_node);
int mipi_dsi_host_register(struct mipi_dsi_host *host)
{
@@ -182,6 +277,10 @@ int mipi_dsi_host_register(struct mipi_dsi_host *host)
of_mipi_dsi_device_add(host, node);
}
+ mutex_lock(&host_lock);
+ list_add_tail(&host->list, &host_list);
+ mutex_unlock(&host_lock);
+
return 0;
}
EXPORT_SYMBOL(mipi_dsi_host_register);
@@ -190,7 +289,7 @@ static int mipi_dsi_remove_device_fn(struct device *dev, void *priv)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
- device_unregister(&dsi->dev);
+ mipi_dsi_device_unregister(dsi);
return 0;
}
@@ -198,6 +297,10 @@ static int mipi_dsi_remove_device_fn(struct device *dev, void *priv)
void mipi_dsi_host_unregister(struct mipi_dsi_host *host)
{
device_for_each_child(host->dev, NULL, mipi_dsi_remove_device_fn);
+
+ mutex_lock(&host_lock);
+ list_del_init(&host->list);
+ mutex_unlock(&host_lock);
}
EXPORT_SYMBOL(mipi_dsi_host_unregister);
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 2164c999052c..ceb20486dacf 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -847,6 +847,7 @@ static const struct drm_display_mode innolux_g121x1_l03_mode = {
.vsync_end = 768 + 38 + 1,
.vtotal = 768 + 38 + 1 + 0,
.vrefresh = 60,
+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
};
static const struct panel_desc innolux_g121x1_l03 = {
@@ -982,6 +983,29 @@ static const struct panel_desc lg_lb070wv8 = {
.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
};
+static const struct drm_display_mode lg_lp120up1_mode = {
+ .clock = 162300,
+ .hdisplay = 1920,
+ .hsync_start = 1920 + 40,
+ .hsync_end = 1920 + 40 + 40,
+ .htotal = 1920 + 40 + 40+ 80,
+ .vdisplay = 1280,
+ .vsync_start = 1280 + 4,
+ .vsync_end = 1280 + 4 + 4,
+ .vtotal = 1280 + 4 + 4 + 12,
+ .vrefresh = 60,
+};
+
+static const struct panel_desc lg_lp120up1 = {
+ .modes = &lg_lp120up1_mode,
+ .num_modes = 1,
+ .bpc = 8,
+ .size = {
+ .width = 267,
+ .height = 183,
+ },
+};
+
static const struct drm_display_mode lg_lp129qe_mode = {
.clock = 285250,
.hdisplay = 2560,
@@ -1177,6 +1201,42 @@ static const struct panel_desc shelly_sca07010_bfn_lnn = {
.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
};
+static const struct display_timing urt_umsh_8596md_timing = {
+ .pixelclock = { 33260000, 33260000, 33260000 },
+ .hactive = { 800, 800, 800 },
+ .hfront_porch = { 41, 41, 41 },
+ .hback_porch = { 216 - 128, 216 - 128, 216 - 128 },
+ .hsync_len = { 71, 128, 128 },
+ .vactive = { 480, 480, 480 },
+ .vfront_porch = { 10, 10, 10 },
+ .vback_porch = { 35 - 2, 35 - 2, 35 - 2 },
+ .vsync_len = { 2, 2, 2 },
+ .flags = DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_NEGEDGE |
+ DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW,
+};
+
+static const struct panel_desc urt_umsh_8596md_lvds = {
+ .timings = &urt_umsh_8596md_timing,
+ .num_timings = 1,
+ .bpc = 6,
+ .size = {
+ .width = 152,
+ .height = 91,
+ },
+ .bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
+};
+
+static const struct panel_desc urt_umsh_8596md_parallel = {
+ .timings = &urt_umsh_8596md_timing,
+ .num_timings = 1,
+ .bpc = 6,
+ .size = {
+ .width = 152,
+ .height = 91,
+ },
+ .bus_format = MEDIA_BUS_FMT_RGB666_1X18,
+};
+
static const struct of_device_id platform_of_match[] = {
{
.compatible = "ampire,am800480r3tmqwa1h",
@@ -1257,6 +1317,9 @@ static const struct of_device_id platform_of_match[] = {
.compatible = "lg,lb070wv8",
.data = &lg_lb070wv8,
}, {
+ .compatible = "lg,lp120up1",
+ .data = &lg_lp120up1,
+ }, {
.compatible = "lg,lp129qe",
.data = &lg_lp129qe,
}, {
@@ -1281,6 +1344,24 @@ static const struct of_device_id platform_of_match[] = {
.compatible = "shelly,sca07010-bfn-lnn",
.data = &shelly_sca07010_bfn_lnn,
}, {
+ .compatible = "urt,umsh-8596md-t",
+ .data = &urt_umsh_8596md_parallel,
+ }, {
+ .compatible = "urt,umsh-8596md-1t",
+ .data = &urt_umsh_8596md_parallel,
+ }, {
+ .compatible = "urt,umsh-8596md-7t",
+ .data = &urt_umsh_8596md_parallel,
+ }, {
+ .compatible = "urt,umsh-8596md-11t",
+ .data = &urt_umsh_8596md_lvds,
+ }, {
+ .compatible = "urt,umsh-8596md-19t",
+ .data = &urt_umsh_8596md_lvds,
+ }, {
+ .compatible = "urt,umsh-8596md-20t",
+ .data = &urt_umsh_8596md_parallel,
+ }, {
/* sentinel */
}
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-14 07:36:17 +0300