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drm/sti: add colorspace property to the HDMI connector 

Make the value of the colorspace of the HDMI infoframe configurable.
HDMI colorspace could be: RGB, YUV422 or YUV444

Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
This commit is contained in:
Vincent Abriou 2016-02-10 11:24:28 +01:00
parent e42e7bd7ee
commit 5671cefbf2
2 changed files with 79 additions and 1 deletions
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68
drivers/gpu/drm/sti/sti_hdmi.c
View File

@ -128,6 +128,7 @@ struct sti_hdmi_connector {
struct drm_connector drm_connector;
struct drm_encoder *encoder;
struct sti_hdmi *hdmi;
struct drm_property *colorspace_property;
};
#define to_sti_hdmi_connector(x) \
@ -408,7 +409,7 @@ static int hdmi_avi_infoframe_config(struct sti_hdmi *hdmi)
}
/* fixed infoframe configuration not linked to the mode */
infoframe.colorspace = HDMI_COLORSPACE_RGB;
infoframe.colorspace = hdmi->colorspace;
infoframe.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
infoframe.colorimetry = HDMI_COLORIMETRY_NONE;
@ -771,12 +772,74 @@ static void sti_hdmi_connector_destroy(struct drm_connector *connector)
kfree(hdmi_connector);
}
static void sti_hdmi_connector_init_property(struct drm_device *drm_dev,
struct drm_connector *connector)
{
struct sti_hdmi_connector *hdmi_connector
= to_sti_hdmi_connector(connector);
struct sti_hdmi *hdmi = hdmi_connector->hdmi;
struct drm_property *prop;
/* colorspace property */
hdmi->colorspace = DEFAULT_COLORSPACE_MODE;
prop = drm_property_create_enum(drm_dev, 0, "colorspace",
colorspace_mode_names,
ARRAY_SIZE(colorspace_mode_names));
if (!prop) {
DRM_ERROR("fails to create colorspace property\n");
return;
}
hdmi_connector->colorspace_property = prop;
drm_object_attach_property(&connector->base, prop, hdmi->colorspace);
}
static int
sti_hdmi_connector_set_property(struct drm_connector *connector,
struct drm_connector_state *state,
struct drm_property *property,
uint64_t val)
{
struct sti_hdmi_connector *hdmi_connector
= to_sti_hdmi_connector(connector);
struct sti_hdmi *hdmi = hdmi_connector->hdmi;
if (property == hdmi_connector->colorspace_property) {
hdmi->colorspace = val;
return 0;
}
DRM_ERROR("failed to set hdmi connector property\n");
return -EINVAL;
}
static int
sti_hdmi_connector_get_property(struct drm_connector *connector,
const struct drm_connector_state *state,
struct drm_property *property,
uint64_t *val)
{
struct sti_hdmi_connector *hdmi_connector
= to_sti_hdmi_connector(connector);
struct sti_hdmi *hdmi = hdmi_connector->hdmi;
if (property == hdmi_connector->colorspace_property) {
*val = hdmi->colorspace;
return 0;
}
DRM_ERROR("failed to get hdmi connector property\n");
return -EINVAL;
}
static const struct drm_connector_funcs sti_hdmi_connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = sti_hdmi_connector_detect,
.destroy = sti_hdmi_connector_destroy,
.reset = drm_atomic_helper_connector_reset,
.set_property = drm_atomic_helper_connector_set_property,
.atomic_set_property = sti_hdmi_connector_set_property,
.atomic_get_property = sti_hdmi_connector_get_property,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
@ -836,6 +899,9 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
drm_connector_helper_add(drm_connector,
&sti_hdmi_connector_helper_funcs);
/* initialise property */
sti_hdmi_connector_init_property(drm_dev, drm_connector);
err = drm_connector_register(drm_connector);
if (err)
goto err_connector;

12
drivers/gpu/drm/sti/sti_hdmi.h
View File

@ -7,6 +7,7 @@
#ifndef _STI_HDMI_H_
#define _STI_HDMI_H_
#include <linux/hdmi.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
@ -24,6 +25,14 @@ struct hdmi_phy_ops {
void (*stop)(struct sti_hdmi *hdmi);
};
static const struct drm_prop_enum_list colorspace_mode_names[] = {
{ HDMI_COLORSPACE_RGB, "rgb" },
{ HDMI_COLORSPACE_YUV422, "yuv422" },
{ HDMI_COLORSPACE_YUV444, "yuv444" },
};
#define DEFAULT_COLORSPACE_MODE HDMI_COLORSPACE_RGB
/**
* STI hdmi structure
*
@ -44,6 +53,8 @@ struct hdmi_phy_ops {
* @wait_event: wait event
* @event_received: wait event status
* @reset: reset control of the hdmi phy
* @ddc_adapt: i2c ddc adapter
* @colorspace: current colorspace selected
*/
struct sti_hdmi {
struct device dev;
@ -64,6 +75,7 @@ struct sti_hdmi {
bool event_received;
struct reset_control *reset;
struct i2c_adapter *ddc_adapt;
enum hdmi_colorspace colorspace;
};
u32 hdmi_read(struct sti_hdmi *hdmi, int offset);