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path: root/drivers/gpu/drm/atmel-hlcdc
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-rw-r--r--drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c70
-rw-r--r--drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h1
-rw-r--r--drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c77
3 files changed, 120 insertions, 28 deletions
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index 229138130ce1..9e34bce089d0 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -242,6 +242,55 @@ static void atmel_hlcdc_crtc_atomic_enable(struct drm_crtc *c,
#define ATMEL_HLCDC_RGB888_OUTPUT BIT(3)
#define ATMEL_HLCDC_OUTPUT_MODE_MASK GENMASK(3, 0)
+static int atmel_hlcdc_connector_output_mode(struct drm_connector_state *state)
+{
+ struct drm_connector *connector = state->connector;
+ struct drm_display_info *info = &connector->display_info;
+ struct drm_encoder *encoder;
+ unsigned int supported_fmts = 0;
+ int j;
+
+ encoder = state->best_encoder;
+ if (!encoder)
+ encoder = connector->encoder;
+
+ switch (atmel_hlcdc_encoder_get_bus_fmt(encoder)) {
+ case 0:
+ break;
+ case MEDIA_BUS_FMT_RGB444_1X12:
+ return ATMEL_HLCDC_RGB444_OUTPUT;
+ case MEDIA_BUS_FMT_RGB565_1X16:
+ return ATMEL_HLCDC_RGB565_OUTPUT;
+ case MEDIA_BUS_FMT_RGB666_1X18:
+ return ATMEL_HLCDC_RGB666_OUTPUT;
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ return ATMEL_HLCDC_RGB888_OUTPUT;
+ default:
+ return -EINVAL;
+ }
+
+ for (j = 0; j < info->num_bus_formats; j++) {
+ switch (info->bus_formats[j]) {
+ case MEDIA_BUS_FMT_RGB444_1X12:
+ supported_fmts |= ATMEL_HLCDC_RGB444_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB565_1X16:
+ supported_fmts |= ATMEL_HLCDC_RGB565_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB666_1X18:
+ supported_fmts |= ATMEL_HLCDC_RGB666_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ supported_fmts |= ATMEL_HLCDC_RGB888_OUTPUT;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return supported_fmts;
+}
+
static int atmel_hlcdc_crtc_select_output_mode(struct drm_crtc_state *state)
{
unsigned int output_fmts = ATMEL_HLCDC_OUTPUT_MODE_MASK;
@@ -254,31 +303,12 @@ static int atmel_hlcdc_crtc_select_output_mode(struct drm_crtc_state *state)
crtc = drm_crtc_to_atmel_hlcdc_crtc(state->crtc);
for_each_new_connector_in_state(state->state, connector, cstate, i) {
- struct drm_display_info *info = &connector->display_info;
unsigned int supported_fmts = 0;
- int j;
if (!cstate->crtc)
continue;
- for (j = 0; j < info->num_bus_formats; j++) {
- switch (info->bus_formats[j]) {
- case MEDIA_BUS_FMT_RGB444_1X12:
- supported_fmts |= ATMEL_HLCDC_RGB444_OUTPUT;
- break;
- case MEDIA_BUS_FMT_RGB565_1X16:
- supported_fmts |= ATMEL_HLCDC_RGB565_OUTPUT;
- break;
- case MEDIA_BUS_FMT_RGB666_1X18:
- supported_fmts |= ATMEL_HLCDC_RGB666_OUTPUT;
- break;
- case MEDIA_BUS_FMT_RGB888_1X24:
- supported_fmts |= ATMEL_HLCDC_RGB888_OUTPUT;
- break;
- default:
- break;
- }
- }
+ supported_fmts = atmel_hlcdc_connector_output_mode(cstate);
if (crtc->dc->desc->conflicting_output_formats)
output_fmts &= supported_fmts;
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
index 60c937f42114..4cc1e03f0aee 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -441,5 +441,6 @@ void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
int atmel_hlcdc_crtc_create(struct drm_device *dev);
int atmel_hlcdc_create_outputs(struct drm_device *dev);
+int atmel_hlcdc_encoder_get_bus_fmt(struct drm_encoder *encoder);
#endif /* DRM_ATMEL_HLCDC_H */
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
index c05c2b744981..f73d8a92274e 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
@@ -27,33 +27,94 @@
#include "atmel_hlcdc_dc.h"
+struct atmel_hlcdc_rgb_output {
+ struct drm_encoder encoder;
+ int bus_fmt;
+};
+
static const struct drm_encoder_funcs atmel_hlcdc_panel_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
+static struct atmel_hlcdc_rgb_output *
+atmel_hlcdc_encoder_to_rgb_output(struct drm_encoder *encoder)
+{
+ return container_of(encoder, struct atmel_hlcdc_rgb_output, encoder);
+}
+
+int atmel_hlcdc_encoder_get_bus_fmt(struct drm_encoder *encoder)
+{
+ struct atmel_hlcdc_rgb_output *output;
+
+ output = atmel_hlcdc_encoder_to_rgb_output(encoder);
+
+ return output->bus_fmt;
+}
+
+static int atmel_hlcdc_of_bus_fmt(const struct device_node *ep)
+{
+ u32 bus_width;
+ int ret;
+
+ ret = of_property_read_u32(ep, "bus-width", &bus_width);
+ if (ret == -EINVAL)
+ return 0;
+ if (ret)
+ return ret;
+
+ switch (bus_width) {
+ case 12:
+ return MEDIA_BUS_FMT_RGB444_1X12;
+ case 16:
+ return MEDIA_BUS_FMT_RGB565_1X16;
+ case 18:
+ return MEDIA_BUS_FMT_RGB666_1X18;
+ case 24:
+ return MEDIA_BUS_FMT_RGB888_1X24;
+ default:
+ return -EINVAL;
+ }
+}
+
static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
{
- struct drm_encoder *encoder;
+ struct atmel_hlcdc_rgb_output *output;
+ struct device_node *ep;
struct drm_panel *panel;
struct drm_bridge *bridge;
int ret;
+ ep = of_graph_get_endpoint_by_regs(dev->dev->of_node, 0, endpoint);
+ if (!ep)
+ return -ENODEV;
+
ret = drm_of_find_panel_or_bridge(dev->dev->of_node, 0, endpoint,
&panel, &bridge);
- if (ret)
+ if (ret) {
+ of_node_put(ep);
return ret;
+ }
- encoder = devm_kzalloc(dev->dev, sizeof(*encoder), GFP_KERNEL);
- if (!encoder)
+ output = devm_kzalloc(dev->dev, sizeof(*output), GFP_KERNEL);
+ if (!output) {
+ of_node_put(ep);
+ return -ENOMEM;
+ }
+
+ output->bus_fmt = atmel_hlcdc_of_bus_fmt(ep);
+ of_node_put(ep);
+ if (output->bus_fmt < 0) {
+ dev_err(dev->dev, "endpoint %d: invalid bus width\n", endpoint);
return -EINVAL;
+ }
- ret = drm_encoder_init(dev, encoder,
+ ret = drm_encoder_init(dev, &output->encoder,
&atmel_hlcdc_panel_encoder_funcs,
DRM_MODE_ENCODER_NONE, NULL);
if (ret)
return ret;
- encoder->possible_crtcs = 0x1;
+ output->encoder.possible_crtcs = 0x1;
if (panel) {
bridge = drm_panel_bridge_add(panel, DRM_MODE_CONNECTOR_Unknown);
@@ -62,7 +123,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
}
if (bridge) {
- ret = drm_bridge_attach(encoder, bridge, NULL);
+ ret = drm_bridge_attach(&output->encoder, bridge, NULL);
if (!ret)
return 0;
@@ -70,7 +131,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
drm_panel_bridge_remove(bridge);
}
- drm_encoder_cleanup(encoder);
+ drm_encoder_cleanup(&output->encoder);
return ret;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-12 23:18:16 +0000