diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r600_hdmi.c | 534 |
1 files changed, 534 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c new file mode 100644 index 0000000..0efe2a9 --- /dev/null +++ b/drivers/gpu/drm/radeon/r600_hdmi.c @@ -0,0 +1,534 @@ +/* + * Copyright 2008 Advanced Micro Devices, Inc. + * Copyright 2008 Red Hat Inc. + * Copyright 2009 Christian König. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Christian König + */ +#include <linux/hdmi.h> +#include <drm/drmP.h> +#include <drm/radeon_drm.h> +#include "radeon.h" +#include "radeon_asic.h" +#include "r600d.h" +#include "atom.h" + +/* + * HDMI color format + */ +enum r600_hdmi_color_format { + RGB = 0, + YCC_422 = 1, + YCC_444 = 2 +}; + +/* + * IEC60958 status bits + */ +enum r600_hdmi_iec_status_bits { + AUDIO_STATUS_DIG_ENABLE = 0x01, + AUDIO_STATUS_V = 0x02, + AUDIO_STATUS_VCFG = 0x04, + AUDIO_STATUS_EMPHASIS = 0x08, + AUDIO_STATUS_COPYRIGHT = 0x10, + AUDIO_STATUS_NONAUDIO = 0x20, + AUDIO_STATUS_PROFESSIONAL = 0x40, + AUDIO_STATUS_LEVEL = 0x80 +}; + +static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = { + /* 32kHz 44.1kHz 48kHz */ + /* Clock N CTS N CTS N CTS */ + { 25174, 4576, 28125, 7007, 31250, 6864, 28125 }, /* 25,20/1.001 MHz */ + { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */ + { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */ + { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */ + { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */ + { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */ + { 74175, 11648, 210937, 17836, 234375, 11648, 140625 }, /* 74.25/1.001 MHz */ + { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */ + { 148351, 11648, 421875, 8918, 234375, 5824, 140625 }, /* 148.50/1.001 MHz */ + { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */ + { 0, 4096, 0, 6272, 0, 6144, 0 } /* Other */ +}; + +/* + * calculate CTS value if it's not found in the table + */ +static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int N, int freq) +{ + if (*CTS == 0) + *CTS = clock * N / (128 * freq) * 1000; + DRM_DEBUG("Using ACR timing N=%d CTS=%d for frequency %d\n", + N, *CTS, freq); +} + +struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock) +{ + struct radeon_hdmi_acr res; + u8 i; + + for (i = 0; r600_hdmi_predefined_acr[i].clock != clock && + r600_hdmi_predefined_acr[i].clock != 0; i++) + ; + res = r600_hdmi_predefined_acr[i]; + + /* In case some CTS are missing */ + r600_hdmi_calc_cts(clock, &res.cts_32khz, res.n_32khz, 32000); + r600_hdmi_calc_cts(clock, &res.cts_44_1khz, res.n_44_1khz, 44100); + r600_hdmi_calc_cts(clock, &res.cts_48khz, res.n_48khz, 48000); + + return res; +} + +/* + * update the N and CTS parameters for a given pixel clock rate + */ +static void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_hdmi_acr acr = r600_hdmi_acr(clock); + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + uint32_t offset = dig->afmt->offset; + + WREG32(HDMI0_ACR_32_0 + offset, HDMI0_ACR_CTS_32(acr.cts_32khz)); + WREG32(HDMI0_ACR_32_1 + offset, acr.n_32khz); + + WREG32(HDMI0_ACR_44_0 + offset, HDMI0_ACR_CTS_44(acr.cts_44_1khz)); + WREG32(HDMI0_ACR_44_1 + offset, acr.n_44_1khz); + + WREG32(HDMI0_ACR_48_0 + offset, HDMI0_ACR_CTS_48(acr.cts_48khz)); + WREG32(HDMI0_ACR_48_1 + offset, acr.n_48khz); +} + +/* + * build a HDMI Video Info Frame + */ +static void r600_hdmi_update_avi_infoframe(struct drm_encoder *encoder, + void *buffer, size_t size) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + uint32_t offset = dig->afmt->offset; + uint8_t *frame = buffer + 3; + uint8_t *header = buffer; + + WREG32(HDMI0_AVI_INFO0 + offset, + frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); + WREG32(HDMI0_AVI_INFO1 + offset, + frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24)); + WREG32(HDMI0_AVI_INFO2 + offset, + frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24)); + WREG32(HDMI0_AVI_INFO3 + offset, + frame[0xC] | (frame[0xD] << 8) | (header[1] << 24)); +} + +/* + * build a Audio Info Frame + */ +static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder, + const void *buffer, size_t size) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + uint32_t offset = dig->afmt->offset; + const u8 *frame = buffer + 3; + + WREG32(HDMI0_AUDIO_INFO0 + offset, + frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); + WREG32(HDMI0_AUDIO_INFO1 + offset, + frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24)); +} + +/* + * test if audio buffer is filled enough to start playing + */ +static bool r600_hdmi_is_audio_buffer_filled(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 radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + uint32_t offset = dig->afmt->offset; + + return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0; +} + +/* + * have buffer status changed since last call? + */ +int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder) +{ + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + int status, result; + + if (!dig->afmt || !dig->afmt->enabled) + return 0; + + status = r600_hdmi_is_audio_buffer_filled(encoder); + result = dig->afmt->last_buffer_filled_status != status; + dig->afmt->last_buffer_filled_status = status; + + return result; +} + +/* + * write the audio workaround status to the hardware + */ +static void r600_hdmi_audio_workaround(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 radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + uint32_t offset = dig->afmt->offset; + bool hdmi_audio_workaround = false; /* FIXME */ + u32 value; + + if (!hdmi_audio_workaround || + r600_hdmi_is_audio_buffer_filled(encoder)) + value = 0; /* disable workaround */ + else + value = HDMI0_AUDIO_TEST_EN; /* enable workaround */ + WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset, + value, ~HDMI0_AUDIO_TEST_EN); +} + +void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + u32 base_rate = 24000; + + if (!dig || !dig->afmt) + return; + + /* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT. + * doesn't matter which one you use. Just use the first one. + */ + /* XXX two dtos; generally use dto0 for hdmi */ + /* Express [24MHz / target pixel clock] as an exact rational + * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE + * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator + */ + if (ASIC_IS_DCE32(rdev)) { + if (dig->dig_encoder == 0) { + WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100); + WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); + WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ + } else { + WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100); + WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100); + WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ + } + } else if (ASIC_IS_DCE3(rdev)) { + /* according to the reg specs, this should DCE3.2 only, but in + * practice it seems to cover DCE3.0/3.1 as well. + */ + if (dig->dig_encoder == 0) { + WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100); + WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); + WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ + } else { + WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100); + WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100); + WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ + } + } else { + /* according to the reg specs, this should be DCE2.0 and DCE3.0/3.1 */ + WREG32(AUDIO_DTO, AUDIO_DTO_PHASE(base_rate / 10) | + AUDIO_DTO_MODULE(clock / 10)); + } +} + +/* + * update the info frames with the data from the current display mode + */ +void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE]; + struct hdmi_avi_infoframe frame; + uint32_t offset; + ssize_t err; + + if (!dig || !dig->afmt) + return; + + /* Silent, r600_hdmi_enable will raise WARN for us */ + if (!dig->afmt->enabled) + return; + offset = dig->afmt->offset; + + r600_audio_set_dto(encoder, mode->clock); + + WREG32(HDMI0_VBI_PACKET_CONTROL + offset, + HDMI0_NULL_SEND); /* send null packets when required */ + + WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000); + + if (ASIC_IS_DCE32(rdev)) { + WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset, + HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */ + HDMI0_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */ + WREG32(AFMT_AUDIO_PACKET_CONTROL + offset, + AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */ + AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */ + } else { + WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset, + HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */ + HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */ + HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */ + HDMI0_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */ + } + + WREG32(HDMI0_ACR_PACKET_CONTROL + offset, + HDMI0_ACR_AUTO_SEND | /* allow hw to sent ACR packets when required */ + HDMI0_ACR_SOURCE); /* select SW CTS value */ + + WREG32(HDMI0_VBI_PACKET_CONTROL + offset, + HDMI0_NULL_SEND | /* send null packets when required */ + HDMI0_GC_SEND | /* send general control packets */ + HDMI0_GC_CONT); /* send general control packets every frame */ + + /* TODO: HDMI0_AUDIO_INFO_UPDATE */ + WREG32(HDMI0_INFOFRAME_CONTROL0 + offset, + HDMI0_AVI_INFO_SEND | /* enable AVI info frames */ + HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */ + HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */ + HDMI0_AUDIO_INFO_CONT); /* send audio info frames every frame/field */ + + WREG32(HDMI0_INFOFRAME_CONTROL1 + offset, + HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */ + HDMI0_AUDIO_INFO_LINE(2)); /* anything other than 0 */ + + WREG32(HDMI0_GC + offset, 0); /* unset HDMI0_GC_AVMUTE */ + + err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode); + if (err < 0) { + DRM_ERROR("failed to setup AVI infoframe: %zd\n", err); + return; + } + + err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); + if (err < 0) { + DRM_ERROR("failed to pack AVI infoframe: %zd\n", err); + return; + } + + r600_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer)); + r600_hdmi_update_ACR(encoder, mode->clock); + + /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */ + WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF); + WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF); + WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001); + WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001); + + r600_hdmi_audio_workaround(encoder); +} + +/* + * update settings with current parameters from audio engine + */ +void r600_hdmi_update_audio_settings(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 radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + struct r600_audio audio = r600_audio_status(rdev); + uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; + struct hdmi_audio_infoframe frame; + uint32_t offset; + uint32_t iec; + ssize_t err; + + if (!dig->afmt || !dig->afmt->enabled) + return; + offset = dig->afmt->offset; + + DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n", + r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped", + audio.channels, audio.rate, audio.bits_per_sample); + DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n", + (int)audio.status_bits, (int)audio.category_code); + + iec = 0; + if (audio.status_bits & AUDIO_STATUS_PROFESSIONAL) + iec |= 1 << 0; + if (audio.status_bits & AUDIO_STATUS_NONAUDIO) + iec |= 1 << 1; + if (audio.status_bits & AUDIO_STATUS_COPYRIGHT) + iec |= 1 << 2; + if (audio.status_bits & AUDIO_STATUS_EMPHASIS) + iec |= 1 << 3; + + iec |= HDMI0_60958_CS_CATEGORY_CODE(audio.category_code); + + switch (audio.rate) { + case 32000: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x3); + break; + case 44100: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x0); + break; + case 48000: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x2); + break; + case 88200: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x8); + break; + case 96000: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xa); + break; + case 176400: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xc); + break; + case 192000: + iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xe); + break; + } + + WREG32(HDMI0_60958_0 + offset, iec); + + iec = 0; + switch (audio.bits_per_sample) { + case 16: + iec |= HDMI0_60958_CS_WORD_LENGTH(0x2); + break; + case 20: + iec |= HDMI0_60958_CS_WORD_LENGTH(0x3); + break; + case 24: + iec |= HDMI0_60958_CS_WORD_LENGTH(0xb); + break; + } + if (audio.status_bits & AUDIO_STATUS_V) + iec |= 0x5 << 16; + WREG32_P(HDMI0_60958_1 + offset, iec, ~0x5000f); + + err = hdmi_audio_infoframe_init(&frame); + if (err < 0) { + DRM_ERROR("failed to setup audio infoframe\n"); + return; + } + + frame.channels = audio.channels; + + err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); + if (err < 0) { + DRM_ERROR("failed to pack audio infoframe\n"); + return; + } + + r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer)); + r600_hdmi_audio_workaround(encoder); +} + +/* + * enable the HDMI engine + */ +void r600_hdmi_enable(struct drm_encoder *encoder, bool enable) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; + u32 hdmi = HDMI0_ERROR_ACK; + + if (!dig || !dig->afmt) + return; + + /* Silent, r600_hdmi_enable will raise WARN for us */ + if (enable && dig->afmt->enabled) + return; + if (!enable && !dig->afmt->enabled) + return; + + /* Older chipsets require setting HDMI and routing manually */ + if (!ASIC_IS_DCE3(rdev)) { + if (enable) + hdmi |= HDMI0_ENABLE; + switch (radeon_encoder->encoder_id) { + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: + if (enable) { + WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN); + hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA); + } else { + WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN); + } + break; + case ENCODER_OBJECT_ID_INTERNAL_LVTM1: + if (enable) { + WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN); + hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA); + } else { + WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN); + } + break; + case ENCODER_OBJECT_ID_INTERNAL_DDI: + if (enable) { + WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN); + hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA); + } else { + WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN); + } + break; + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1: + if (enable) + hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA); + break; + default: + dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n", + radeon_encoder->encoder_id); + break; + } + WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi); + } + + if (rdev->irq.installed) { + /* if irq is available use it */ + /* XXX: shouldn't need this on any asics. Double check DCE2/3 */ + if (enable) + radeon_irq_kms_enable_afmt(rdev, dig->afmt->id); + else + radeon_irq_kms_disable_afmt(rdev, dig->afmt->id); + } + + dig->afmt->enabled = enable; + + DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n", + enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id); +} + |