From 721566768787f3b4790d22d993d70befdd440f64 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 18 Sep 2014 16:36:08 -0400 Subject: 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 --- drivers/gpu/drm/radeon/r600_hdmi.c | 154 +++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) (limited to 'drivers/gpu/drm/radeon/r600_hdmi.c') 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 @@ -71,6 +71,160 @@ 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 */ -- cgit v1.2.1