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drm/radeon/kms: add support for encoder cloning.

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The RN50 really needs this since its a single crtc card,
however other gpus may benefit from it as well.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2009-10-13 14:10:37 +10:00
parent 2de3b4841f
commit 1f3b6a45f0
4 changed files with 48 additions and 2 deletions
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1
drivers/gpu/drm/radeon/radeon_display.c
View File

@ -324,6 +324,7 @@ static bool radeon_setup_enc_conn(struct drm_device *dev)
ret = radeon_get_legacy_connector_info_from_table(dev);
}
if (ret) {
radeon_setup_encoder_clones(dev);
radeon_print_display_setup(dev);
list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head)
radeon_ddc_dump(drm_connector);

46
drivers/gpu/drm/radeon/radeon_encoders.c
View File

@ -35,6 +35,51 @@ extern int atom_debug;
bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
struct drm_display_mode *mode);
static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct drm_encoder *clone_encoder;
uint32_t index_mask = 0;
int count;
/* DIG routing gets problematic */
if (rdev->family >= CHIP_R600)
return index_mask;
/* LVDS/TV are too wacky */
if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)
return index_mask;
/* DVO requires 2x ppll clocks depending on tmds chip */
if (radeon_encoder->devices & ATOM_DEVICE_DFP2_SUPPORT)
return index_mask;
count = -1;
list_for_each_entry(clone_encoder, &dev->mode_config.encoder_list, head) {
struct radeon_encoder *radeon_clone = to_radeon_encoder(clone_encoder);
count++;
if (clone_encoder == encoder)
continue;
if (radeon_clone->devices & (ATOM_DEVICE_LCD_SUPPORT))
continue;
if (radeon_clone->devices & ATOM_DEVICE_DFP2_SUPPORT)
continue;
else
index_mask |= (1 << count);
}
return index_mask;
}
void radeon_setup_encoder_clones(struct drm_device *dev)
{
struct drm_encoder *encoder;
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
encoder->possible_clones = radeon_encoder_clones(encoder);
}
}
uint32_t
radeon_get_encoder_id(struct drm_device *dev, uint32_t supported_device, uint8_t dac)
{
@ -1341,7 +1386,6 @@ radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_id, uint32_t su
encoder->possible_crtcs = 0x1;
else
encoder->possible_crtcs = 0x3;
encoder->possible_clones = 0;
radeon_encoder->enc_priv = NULL;

1
drivers/gpu/drm/radeon/radeon_legacy_encoders.c
View File

@ -1331,7 +1331,6 @@ radeon_add_legacy_encoder(struct drm_device *dev, uint32_t encoder_id, uint32_t
encoder->possible_crtcs = 0x1;
else
encoder->possible_crtcs = 0x3;
encoder->possible_clones = 0;
radeon_encoder->enc_priv = NULL;

2
drivers/gpu/drm/radeon/radeon_mode.h
View File

@ -377,6 +377,8 @@ extern void radeon_compute_pll(struct radeon_pll *pll,
uint32_t *post_div_p,
int flags);
extern void radeon_setup_encoder_clones(struct drm_device *dev);
struct drm_encoder *radeon_encoder_legacy_lvds_add(struct drm_device *dev, int bios_index);
struct drm_encoder *radeon_encoder_legacy_primary_dac_add(struct drm_device *dev, int bios_index, int with_tv);
struct drm_encoder *radeon_encoder_legacy_tv_dac_add(struct drm_device *dev, int bios_index, int with_tv);