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authorAlex Deucher <alexander.deucher@amd.com>2014-09-18 16:36:08 -0400
committerAlex Deucher <alexander.deucher@amd.com>2014-10-01 09:00:03 -0400
commit721566768787f3b4790d22d993d70befdd440f64 (patch)
tree7df31be554b349a1b88b4c509220f5d669f949f1 /drivers/gpu/drm/radeon/r600_hdmi.c
parentd740a93337e7b04b2b648fbc4bcf5f8726d98202 (diff)
downloadlinux-721566768787f3b4790d22d993d70befdd440f64.tar.bz2
drm/radeon: consolidate r600_audio.c into r600_hdmi.c
Most of that functionality is only used by r600_hdmi.c and I'm planning to change that further. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_hdmi.c')
-rw-r--r--drivers/gpu/drm/radeon/r600_hdmi.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c
index 26ef8ced6f89..29e5f49334be 100644
--- a/drivers/gpu/drm/radeon/r600_hdmi.c
+++ b/drivers/gpu/drm/radeon/r600_hdmi.c
@@ -72,6 +72,160 @@ static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = {
/*
+ * check if the chipset is supported
+ */
+static int r600_audio_chipset_supported(struct radeon_device *rdev)
+{
+ return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
+}
+
+static struct r600_audio_pin r600_audio_status(struct radeon_device *rdev)
+{
+ struct r600_audio_pin status;
+ uint32_t value;
+
+ value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL);
+
+ /* number of channels */
+ status.channels = (value & 0x7) + 1;
+
+ /* bits per sample */
+ switch ((value & 0xF0) >> 4) {
+ case 0x0:
+ status.bits_per_sample = 8;
+ break;
+ case 0x1:
+ status.bits_per_sample = 16;
+ break;
+ case 0x2:
+ status.bits_per_sample = 20;
+ break;
+ case 0x3:
+ status.bits_per_sample = 24;
+ break;
+ case 0x4:
+ status.bits_per_sample = 32;
+ break;
+ default:
+ dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n",
+ (int)value);
+ status.bits_per_sample = 16;
+ }
+
+ /* current sampling rate in HZ */
+ if (value & 0x4000)
+ status.rate = 44100;
+ else
+ status.rate = 48000;
+ status.rate *= ((value >> 11) & 0x7) + 1;
+ status.rate /= ((value >> 8) & 0x7) + 1;
+
+ value = RREG32(R600_AUDIO_STATUS_BITS);
+
+ /* iec 60958 status bits */
+ status.status_bits = value & 0xff;
+
+ /* iec 60958 category code */
+ status.category_code = (value >> 8) & 0xff;
+
+ return status;
+}
+
+/*
+ * update all hdmi interfaces with current audio parameters
+ */
+void r600_audio_update_hdmi(struct work_struct *work)
+{
+ struct radeon_device *rdev = container_of(work, struct radeon_device,
+ audio_work);
+ struct drm_device *dev = rdev->ddev;
+ struct r600_audio_pin audio_status = r600_audio_status(rdev);
+ struct drm_encoder *encoder;
+ bool changed = false;
+
+ if (rdev->audio.pin[0].channels != audio_status.channels ||
+ rdev->audio.pin[0].rate != audio_status.rate ||
+ rdev->audio.pin[0].bits_per_sample != audio_status.bits_per_sample ||
+ rdev->audio.pin[0].status_bits != audio_status.status_bits ||
+ rdev->audio.pin[0].category_code != audio_status.category_code) {
+ rdev->audio.pin[0] = audio_status;
+ changed = true;
+ }
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ if (!radeon_encoder_is_digital(encoder))
+ continue;
+ if (changed || r600_hdmi_buffer_status_changed(encoder))
+ r600_hdmi_update_audio_settings(encoder);
+ }
+}
+
+/* enable the audio stream */
+void r600_audio_enable(struct radeon_device *rdev,
+ struct r600_audio_pin *pin,
+ bool enable)
+{
+ u32 value = 0;
+
+ if (!pin)
+ return;
+
+ if (ASIC_IS_DCE4(rdev)) {
+ if (enable) {
+ value |= 0x81000000; /* Required to enable audio */
+ value |= 0x0e1000f0; /* fglrx sets that too */
+ }
+ WREG32(EVERGREEN_AUDIO_ENABLE, value);
+ } else {
+ WREG32_P(R600_AUDIO_ENABLE,
+ enable ? 0x81000000 : 0x0, ~0x81000000);
+ }
+}
+
+/*
+ * initialize the audio vars
+ */
+int r600_audio_init(struct radeon_device *rdev)
+{
+ if (!radeon_audio || !r600_audio_chipset_supported(rdev))
+ return 0;
+
+ rdev->audio.enabled = true;
+
+ rdev->audio.num_pins = 1;
+ rdev->audio.pin[0].channels = -1;
+ rdev->audio.pin[0].rate = -1;
+ rdev->audio.pin[0].bits_per_sample = -1;
+ rdev->audio.pin[0].status_bits = 0;
+ rdev->audio.pin[0].category_code = 0;
+ rdev->audio.pin[0].id = 0;
+ /* disable audio. it will be set up later */
+ r600_audio_enable(rdev, &rdev->audio.pin[0], false);
+
+ return 0;
+}
+
+/*
+ * release the audio timer
+ * TODO: How to do this correctly on SMP systems?
+ */
+void r600_audio_fini(struct radeon_device *rdev)
+{
+ if (!rdev->audio.enabled)
+ return;
+
+ r600_audio_enable(rdev, &rdev->audio.pin[0], false);
+
+ rdev->audio.enabled = false;
+}
+
+struct r600_audio_pin *r600_audio_get_pin(struct radeon_device *rdev)
+{
+ /* only one pin on 6xx-NI */
+ return &rdev->audio.pin[0];
+}
+
+/*
* calculate CTS and N values if they are not found in the table
*/
static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int *N, int freq)