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authorChristian König <deathsimple@vodafone.de>2010-04-05 22:14:55 +0200
committerDave Airlie <airlied@redhat.com>2010-04-23 14:11:17 +1000
commit58bd086313ea0eda037f65b9bda2b3decb959a31 (patch)
tree7d82481314d6e3c27a3639f99e115dd672a6ac6e /drivers/gpu/drm/radeon/r600_audio.c
parent61cf059325a30995a78c5001db2ed2a8ab1d4c36 (diff)
drm/radeon/kms: rework audio polling timer
Rework HDMI audio polling timer, only enable it when at least one HDMI encoder needs it. Preparation for replacing it with irq support. Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_audio.c')
-rw-r--r--drivers/gpu/drm/radeon/r600_audio.c55
1 files changed, 41 insertions, 14 deletions
diff --git a/drivers/gpu/drm/radeon/r600_audio.c b/drivers/gpu/drm/radeon/r600_audio.c
index 1d898051c63..ed8d3989f17 100644
--- a/drivers/gpu/drm/radeon/r600_audio.c
+++ b/drivers/gpu/drm/radeon/r600_audio.c
@@ -44,7 +44,7 @@ static int r600_audio_chipset_supported(struct radeon_device *rdev)
/*
* current number of channels
*/
-static int r600_audio_channels(struct radeon_device *rdev)
+int r600_audio_channels(struct radeon_device *rdev)
{
return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1;
}
@@ -52,7 +52,7 @@ static int r600_audio_channels(struct radeon_device *rdev)
/*
* current bits per sample
*/
-static int r600_audio_bits_per_sample(struct radeon_device *rdev)
+int r600_audio_bits_per_sample(struct radeon_device *rdev)
{
uint32_t value = (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0xF0) >> 4;
switch (value) {
@@ -71,7 +71,7 @@ static int r600_audio_bits_per_sample(struct radeon_device *rdev)
/*
* current sampling rate in HZ
*/
-static int r600_audio_rate(struct radeon_device *rdev)
+int r600_audio_rate(struct radeon_device *rdev)
{
uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL);
uint32_t result;
@@ -90,7 +90,7 @@ static int r600_audio_rate(struct radeon_device *rdev)
/*
* iec 60958 status bits
*/
-static uint8_t r600_audio_status_bits(struct radeon_device *rdev)
+uint8_t r600_audio_status_bits(struct radeon_device *rdev)
{
return RREG32(R600_AUDIO_STATUS_BITS) & 0xff;
}
@@ -98,7 +98,7 @@ static uint8_t r600_audio_status_bits(struct radeon_device *rdev)
/*
* iec 60958 category code
*/
-static uint8_t r600_audio_category_code(struct radeon_device *rdev)
+uint8_t r600_audio_category_code(struct radeon_device *rdev)
{
return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff;
}
@@ -118,7 +118,7 @@ static void r600_audio_update_hdmi(unsigned long param)
uint8_t category_code = r600_audio_category_code(rdev);
struct drm_encoder *encoder;
- int changes = 0;
+ int changes = 0, still_going = 0;
changes |= channels != rdev->audio_channels;
changes |= rate != rdev->audio_rate;
@@ -135,15 +135,17 @@ static void r600_audio_update_hdmi(unsigned long param)
}
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
- if (changes || r600_hdmi_buffer_status_changed(encoder))
- r600_hdmi_update_audio_settings(
- encoder, channels,
- rate, bps, status_bits,
- category_code);
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ if (radeon_encoder->audio_polling_active) {
+ still_going = 1;
+ if (changes || r600_hdmi_buffer_status_changed(encoder))
+ r600_hdmi_update_audio_settings(encoder);
+ }
}
- mod_timer(&rdev->audio_timer,
- jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL));
+ if(still_going)
+ mod_timer(&rdev->audio_timer,
+ jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL));
}
/*
@@ -176,9 +178,34 @@ int r600_audio_init(struct radeon_device *rdev)
r600_audio_update_hdmi,
(unsigned long)rdev);
+ return 0;
+}
+
+/*
+ * enable the polling timer, to check for status changes
+ */
+void r600_audio_enable_polling(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);
+
+ DRM_DEBUG("r600_audio_enable_polling: %d", radeon_encoder->audio_polling_active);
+ if (radeon_encoder->audio_polling_active)
+ return;
+
+ radeon_encoder->audio_polling_active = 1;
mod_timer(&rdev->audio_timer, jiffies + 1);
+}
- return 0;
+/*
+ * disable the polling timer, so we get no more status updates
+ */
+void r600_audio_disable_polling(struct drm_encoder *encoder)
+{
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ DRM_DEBUG("r600_audio_disable_polling: %d", radeon_encoder->audio_polling_active);
+ radeon_encoder->audio_polling_active = 0;
}
/*