#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_of.h>
-#include <drm/drm_panel.h>
+#include <drm/drm_bridge.h>
#include <drm/drm_plane_helper.h>
#include <video/videomode.h>
#define GCR_LTDCEN BIT(0) /* LTDC ENable */
#define GCR_DEN BIT(16) /* Dither ENable */
-#define GCR_PCPOL BIT(28) /* Pixel Clock POLarity */
-#define GCR_DEPOL BIT(29) /* Data Enable POLarity */
-#define GCR_VSPOL BIT(30) /* Vertical Synchro POLarity */
-#define GCR_HSPOL BIT(31) /* Horizontal Synchro POLarity */
+#define GCR_PCPOL BIT(28) /* Pixel Clock POLarity-Inverted */
+#define GCR_DEPOL BIT(29) /* Data Enable POLarity-High */
+#define GCR_VSPOL BIT(30) /* Vertical Synchro POLarity-High */
+#define GCR_HSPOL BIT(31) /* Horizontal Synchro POLarity-High */
#define GC1R_WBCH GENMASK(3, 0) /* Width of Blue CHannel output */
#define GC1R_WGCH GENMASK(7, 4) /* Width of Green Channel output */
#define LXCFBLNR_CFBLN GENMASK(10, 0) /* Color Frame Buffer Line Number */
-#define HSPOL_AL 0 /* Horizontal Sync POLarity Active Low */
-#define VSPOL_AL 0 /* Vertical Sync POLarity Active Low */
-#define DEPOL_AL 0 /* Data Enable POLarity Active Low */
-#define PCPOL_IPC 0 /* Input Pixel Clock */
-#define HSPOL_AH GCR_HSPOL /* Horizontal Sync POLarity Active High */
-#define VSPOL_AH GCR_VSPOL /* Vertical Sync POLarity Active High */
-#define DEPOL_AH GCR_DEPOL /* Data Enable POLarity Active High */
-#define PCPOL_IIPC GCR_PCPOL /* Inverted Input Pixel Clock */
#define CONSTA_MAX 0xFF /* CONSTant Alpha MAX= 1.0 */
#define BF1_PAXCA 0x600 /* Pixel Alpha x Constant Alpha */
#define BF1_CA 0x400 /* Constant Alpha */
return (struct ltdc_device *)enc->dev->dev_private;
}
-static inline struct ltdc_device *connector_to_ltdc(struct drm_connector *con)
-{
- return (struct ltdc_device *)con->dev->dev_private;
-}
-
static inline enum ltdc_pix_fmt to_ltdc_pixelformat(u32 drm_fmt)
{
enum ltdc_pix_fmt pf;
ldev->clut[i]);
}
-static void ltdc_crtc_enable(struct drm_crtc *crtc)
+static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct ltdc_device *ldev = crtc_to_ltdc(crtc);
drm_crtc_vblank_on(crtc);
}
-static void ltdc_crtc_disable(struct drm_crtc *crtc)
+static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct ltdc_device *ldev = crtc_to_ltdc(crtc);
clk_enable(ldev->pixel_clk);
- /* Configures the HS, VS, DE and PC polarities. */
- val = HSPOL_AL | VSPOL_AL | DEPOL_AL | PCPOL_IPC;
+ /* Configures the HS, VS, DE and PC polarities. Default Active Low */
+ val = 0;
if (vm.flags & DISPLAY_FLAGS_HSYNC_HIGH)
- val |= HSPOL_AH;
+ val |= GCR_HSPOL;
if (vm.flags & DISPLAY_FLAGS_VSYNC_HIGH)
- val |= VSPOL_AH;
+ val |= GCR_VSPOL;
if (vm.flags & DISPLAY_FLAGS_DE_HIGH)
- val |= DEPOL_AH;
+ val |= GCR_DEPOL;
if (vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
- val |= PCPOL_IIPC;
+ val |= GCR_PCPOL;
reg_update_bits(ldev->regs, LTDC_GCR,
GCR_HSPOL | GCR_VSPOL | GCR_DEPOL | GCR_PCPOL, val);
static struct drm_crtc_helper_funcs ltdc_crtc_helper_funcs = {
.load_lut = ltdc_crtc_load_lut,
- .enable = ltdc_crtc_enable,
- .disable = ltdc_crtc_disable,
.mode_set_nofb = ltdc_crtc_mode_set_nofb,
.atomic_flush = ltdc_crtc_atomic_flush,
+ .atomic_enable = ltdc_crtc_atomic_enable,
+ .atomic_disable = ltdc_crtc_atomic_disable,
};
int ltdc_crtc_enable_vblank(struct drm_device *ddev, unsigned int pipe)
* DRM_ENCODER
*/
-static void ltdc_rgb_encoder_enable(struct drm_encoder *encoder)
-{
- struct ltdc_device *ldev = encoder_to_ltdc(encoder);
-
- DRM_DEBUG_DRIVER("\n");
-
- drm_panel_prepare(ldev->panel);
- drm_panel_enable(ldev->panel);
-}
-
-static void ltdc_rgb_encoder_disable(struct drm_encoder *encoder)
-{
- struct ltdc_device *ldev = encoder_to_ltdc(encoder);
-
- DRM_DEBUG_DRIVER("\n");
-
- drm_panel_disable(ldev->panel);
- drm_panel_unprepare(ldev->panel);
-}
-
-static const struct drm_encoder_helper_funcs ltdc_rgb_encoder_helper_funcs = {
- .enable = ltdc_rgb_encoder_enable,
- .disable = ltdc_rgb_encoder_disable,
-};
-
-static const struct drm_encoder_funcs ltdc_rgb_encoder_funcs = {
+static const struct drm_encoder_funcs ltdc_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
-static struct drm_encoder *ltdc_rgb_encoder_create(struct drm_device *ddev)
+static int ltdc_encoder_init(struct drm_device *ddev)
{
+ struct ltdc_device *ldev = ddev->dev_private;
struct drm_encoder *encoder;
+ int ret;
encoder = devm_kzalloc(ddev->dev, sizeof(*encoder), GFP_KERNEL);
if (!encoder)
- return NULL;
+ return -ENOMEM;
encoder->possible_crtcs = CRTC_MASK;
encoder->possible_clones = 0; /* No cloning support */
- drm_encoder_init(ddev, encoder, <dc_rgb_encoder_funcs,
+ drm_encoder_init(ddev, encoder, <dc_encoder_funcs,
DRM_MODE_ENCODER_DPI, NULL);
- drm_encoder_helper_add(encoder, <dc_rgb_encoder_helper_funcs);
-
- DRM_DEBUG_DRIVER("RGB encoder:%d created\n", encoder->base.id);
-
- return encoder;
-}
-
-/*
- * DRM_CONNECTOR
- */
-
-static int ltdc_rgb_connector_get_modes(struct drm_connector *connector)
-{
- struct drm_device *ddev = connector->dev;
- struct ltdc_device *ldev = ddev->dev_private;
- int ret = 0;
-
- DRM_DEBUG_DRIVER("\n");
-
- if (ldev->panel)
- ret = drm_panel_get_modes(ldev->panel);
-
- return ret < 0 ? 0 : ret;
-}
-
-static struct drm_connector_helper_funcs ltdc_rgb_connector_helper_funcs = {
- .get_modes = ltdc_rgb_connector_get_modes,
-};
-
-static enum drm_connector_status
-ltdc_rgb_connector_detect(struct drm_connector *connector, bool force)
-{
- struct ltdc_device *ldev = connector_to_ltdc(connector);
-
- return ldev->panel ? connector_status_connected :
- connector_status_disconnected;
-}
-
-static void ltdc_rgb_connector_destroy(struct drm_connector *connector)
-{
- DRM_DEBUG_DRIVER("\n");
-
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
-}
-
-static const struct drm_connector_funcs ltdc_rgb_connector_funcs = {
- .dpms = drm_atomic_helper_connector_dpms,
- .fill_modes = drm_helper_probe_single_connector_modes,
- .detect = ltdc_rgb_connector_detect,
- .destroy = ltdc_rgb_connector_destroy,
- .reset = drm_atomic_helper_connector_reset,
- .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-struct drm_connector *ltdc_rgb_connector_create(struct drm_device *ddev)
-{
- struct drm_connector *connector;
- int err;
-
- connector = devm_kzalloc(ddev->dev, sizeof(*connector), GFP_KERNEL);
- if (!connector) {
- DRM_ERROR("Failed to allocate connector\n");
- return NULL;
- }
-
- connector->polled = DRM_CONNECTOR_POLL_HPD;
-
- err = drm_connector_init(ddev, connector, <dc_rgb_connector_funcs,
- DRM_MODE_CONNECTOR_DPI);
- if (err) {
- DRM_ERROR("Failed to initialize connector\n");
- return NULL;
+ ret = drm_bridge_attach(encoder, ldev->bridge, NULL);
+ if (ret) {
+ drm_encoder_cleanup(encoder);
+ return -EINVAL;
}
- drm_connector_helper_add(connector, <dc_rgb_connector_helper_funcs);
-
- DRM_DEBUG_DRIVER("RGB connector:%d created\n", connector->base.id);
+ DRM_DEBUG_DRIVER("Bridge encoder:%d created\n", encoder->base.id);
- return connector;
+ return 0;
}
static int ltdc_get_caps(struct drm_device *ddev)
return 0;
}
-static struct drm_panel *ltdc_get_panel(struct drm_device *ddev)
-{
- struct device *dev = ddev->dev;
- struct device_node *np = dev->of_node;
- struct device_node *entity, *port = NULL;
- struct drm_panel *panel = NULL;
-
- DRM_DEBUG_DRIVER("\n");
-
- /*
- * Parse ltdc node to get remote port and find RGB panel / HDMI slave
- * If a dsi or a bridge (hdmi, lvds...) is connected to ltdc,
- * a remote port & RGB panel will not be found.
- */
- for_each_endpoint_of_node(np, entity) {
- if (!of_device_is_available(entity))
- continue;
-
- port = of_graph_get_remote_port_parent(entity);
- if (port) {
- panel = of_drm_find_panel(port);
- of_node_put(port);
- if (panel) {
- DRM_DEBUG_DRIVER("remote panel %s\n",
- port->full_name);
- } else {
- DRM_DEBUG_DRIVER("panel missing\n");
- of_node_put(entity);
- }
- }
- }
-
- return panel;
-}
-
int ltdc_load(struct drm_device *ddev)
{
struct platform_device *pdev = to_platform_device(ddev->dev);
struct ltdc_device *ldev = ddev->dev_private;
struct device *dev = ddev->dev;
struct device_node *np = dev->of_node;
- struct drm_encoder *encoder;
- struct drm_connector *connector = NULL;
+ struct drm_bridge *bridge;
+ struct drm_panel *panel;
struct drm_crtc *crtc;
struct reset_control *rstc;
struct resource res;
DRM_DEBUG_DRIVER("\n");
- ldev->panel = ltdc_get_panel(ddev);
- if (!ldev->panel)
- return -EPROBE_DEFER;
+ ret = drm_of_find_panel_or_bridge(np, 0, 0, &panel, &bridge);
+ if (ret)
+ return ret;
rstc = of_reset_control_get(np, NULL);
if (of_address_to_resource(np, 0, &res)) {
DRM_ERROR("Unable to get resource\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto err;
}
ldev->regs = devm_ioremap_resource(dev, &res);
if (IS_ERR(ldev->regs)) {
DRM_ERROR("Unable to get ltdc registers\n");
- return PTR_ERR(ldev->regs);
+ ret = PTR_ERR(ldev->regs);
+ goto err;
}
for (i = 0; i < MAX_IRQ; i++) {
dev_name(dev), ddev);
if (ret) {
DRM_ERROR("Failed to register LTDC interrupt\n");
- return ret;
+ goto err;
}
}
if (ret) {
DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
ldev->caps.hw_version);
- return ret;
+ goto err;
}
DRM_INFO("ltdc hw version 0x%08x - ready\n", ldev->caps.hw_version);
- if (ldev->panel) {
- encoder = ltdc_rgb_encoder_create(ddev);
- if (!encoder) {
- DRM_ERROR("Failed to create RGB encoder\n");
- ret = -EINVAL;
- goto err;
- }
-
- connector = ltdc_rgb_connector_create(ddev);
- if (!connector) {
- DRM_ERROR("Failed to create RGB connector\n");
- ret = -EINVAL;
+ if (panel) {
+ bridge = drm_panel_bridge_add(panel, DRM_MODE_CONNECTOR_DPI);
+ if (IS_ERR(bridge)) {
+ DRM_ERROR("Failed to create panel-bridge\n");
+ ret = PTR_ERR(bridge);
goto err;
}
+ ldev->is_panel_bridge = true;
+ }
- ret = drm_mode_connector_attach_encoder(connector, encoder);
- if (ret) {
- DRM_ERROR("Failed to attach connector to encoder\n");
- goto err;
- }
+ ldev->bridge = bridge;
- drm_panel_attach(ldev->panel, connector);
+ ret = ltdc_encoder_init(ddev);
+ if (ret) {
+ DRM_ERROR("Failed to init encoder\n");
+ goto err;
}
crtc = devm_kzalloc(dev, sizeof(*crtc), GFP_KERNEL);
ddev->irq_enabled = 1;
return 0;
+
err:
- if (ldev->panel)
- drm_panel_detach(ldev->panel);
+ if (ldev->is_panel_bridge)
+ drm_panel_bridge_remove(bridge);
clk_disable_unprepare(ldev->pixel_clk);
DRM_DEBUG_DRIVER("\n");
- if (ldev->panel)
- drm_panel_detach(ldev->panel);
+ if (ldev->is_panel_bridge)
+ drm_panel_bridge_remove(ldev->bridge);
clk_disable_unprepare(ldev->pixel_clk);
}
projects / mirror_ubuntu-bionic-kernel.git / blobdiff