diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r600_hdmi.c | 506 |
1 files changed, 506 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 000000000000..fcc949df0e5d --- /dev/null +++ b/drivers/gpu/drm/radeon/r600_hdmi.c @@ -0,0 +1,506 @@ +/* + * 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 "drmP.h" +#include "radeon_drm.h" +#include "radeon.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 +}; + +struct { + uint32_t Clock; + + int N_32kHz; + int CTS_32kHz; + + int N_44_1kHz; + int CTS_44_1kHz; + + int N_48kHz; + int CTS_48kHz; + +} r600_hdmi_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); +} + +/* + * 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; + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + int CTS; + int N; + int i; + + for (i = 0; r600_hdmi_ACR[i].Clock != clock && r600_hdmi_ACR[i].Clock != 0; i++); + + CTS = r600_hdmi_ACR[i].CTS_32kHz; + N = r600_hdmi_ACR[i].N_32kHz; + r600_hdmi_calc_CTS(clock, &CTS, N, 32000); + WREG32(offset+R600_HDMI_32kHz_CTS, CTS << 12); + WREG32(offset+R600_HDMI_32kHz_N, N); + + CTS = r600_hdmi_ACR[i].CTS_44_1kHz; + N = r600_hdmi_ACR[i].N_44_1kHz; + r600_hdmi_calc_CTS(clock, &CTS, N, 44100); + WREG32(offset+R600_HDMI_44_1kHz_CTS, CTS << 12); + WREG32(offset+R600_HDMI_44_1kHz_N, N); + + CTS = r600_hdmi_ACR[i].CTS_48kHz; + N = r600_hdmi_ACR[i].N_48kHz; + r600_hdmi_calc_CTS(clock, &CTS, N, 48000); + WREG32(offset+R600_HDMI_48kHz_CTS, CTS << 12); + WREG32(offset+R600_HDMI_48kHz_N, N); +} + +/* + * calculate the crc for a given info frame + */ +static void r600_hdmi_infoframe_checksum(uint8_t packetType, + uint8_t versionNumber, + uint8_t length, + uint8_t *frame) +{ + int i; + frame[0] = packetType + versionNumber + length; + for (i = 1; i <= length; i++) + frame[0] += frame[i]; + frame[0] = 0x100 - frame[0]; +} + +/* + * build a HDMI Video Info Frame + */ +static void r600_hdmi_videoinfoframe( + struct drm_encoder *encoder, + enum r600_hdmi_color_format color_format, + int active_information_present, + uint8_t active_format_aspect_ratio, + uint8_t scan_information, + uint8_t colorimetry, + uint8_t ex_colorimetry, + uint8_t quantization, + int ITC, + uint8_t picture_aspect_ratio, + uint8_t video_format_identification, + uint8_t pixel_repetition, + uint8_t non_uniform_picture_scaling, + uint8_t bar_info_data_valid, + uint16_t top_bar, + uint16_t bottom_bar, + uint16_t left_bar, + uint16_t right_bar +) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + + uint8_t frame[14]; + + frame[0x0] = 0; + frame[0x1] = + (scan_information & 0x3) | + ((bar_info_data_valid & 0x3) << 2) | + ((active_information_present & 0x1) << 4) | + ((color_format & 0x3) << 5); + frame[0x2] = + (active_format_aspect_ratio & 0xF) | + ((picture_aspect_ratio & 0x3) << 4) | + ((colorimetry & 0x3) << 6); + frame[0x3] = + (non_uniform_picture_scaling & 0x3) | + ((quantization & 0x3) << 2) | + ((ex_colorimetry & 0x7) << 4) | + ((ITC & 0x1) << 7); + frame[0x4] = (video_format_identification & 0x7F); + frame[0x5] = (pixel_repetition & 0xF); + frame[0x6] = (top_bar & 0xFF); + frame[0x7] = (top_bar >> 8); + frame[0x8] = (bottom_bar & 0xFF); + frame[0x9] = (bottom_bar >> 8); + frame[0xA] = (left_bar & 0xFF); + frame[0xB] = (left_bar >> 8); + frame[0xC] = (right_bar & 0xFF); + frame[0xD] = (right_bar >> 8); + + r600_hdmi_infoframe_checksum(0x82, 0x02, 0x0D, frame); + + WREG32(offset+R600_HDMI_VIDEOINFOFRAME_0, + frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); + WREG32(offset+R600_HDMI_VIDEOINFOFRAME_1, + frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24)); + WREG32(offset+R600_HDMI_VIDEOINFOFRAME_2, + frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24)); + WREG32(offset+R600_HDMI_VIDEOINFOFRAME_3, + frame[0xC] | (frame[0xD] << 8)); +} + +/* + * build a Audio Info Frame + */ +static void r600_hdmi_audioinfoframe( + struct drm_encoder *encoder, + uint8_t channel_count, + uint8_t coding_type, + uint8_t sample_size, + uint8_t sample_frequency, + uint8_t format, + uint8_t channel_allocation, + uint8_t level_shift, + int downmix_inhibit +) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + + uint8_t frame[11]; + + frame[0x0] = 0; + frame[0x1] = (channel_count & 0x7) | ((coding_type & 0xF) << 4); + frame[0x2] = (sample_size & 0x3) | ((sample_frequency & 0x7) << 2); + frame[0x3] = format; + frame[0x4] = channel_allocation; + frame[0x5] = ((level_shift & 0xF) << 3) | ((downmix_inhibit & 0x1) << 7); + frame[0x6] = 0; + frame[0x7] = 0; + frame[0x8] = 0; + frame[0x9] = 0; + frame[0xA] = 0; + + r600_hdmi_infoframe_checksum(0x84, 0x01, 0x0A, frame); + + WREG32(offset+R600_HDMI_AUDIOINFOFRAME_0, + frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); + WREG32(offset+R600_HDMI_AUDIOINFOFRAME_1, + frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24)); +} + +/* + * test if audio buffer is filled enough to start playing + */ +static int r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + + return (RREG32(offset+R600_HDMI_STATUS) & 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); + int status, result; + + if (!radeon_encoder->hdmi_offset) + return 0; + + status = r600_hdmi_is_audio_buffer_filled(encoder); + result = radeon_encoder->hdmi_buffer_status != status; + radeon_encoder->hdmi_buffer_status = status; + + return result; +} + +/* + * write the audio workaround status to the hardware + */ +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); + uint32_t offset = radeon_encoder->hdmi_offset; + + if (!offset) + return; + + if (r600_hdmi_is_audio_buffer_filled(encoder)) { + /* disable audio workaround and start delivering of audio frames */ + WREG32_P(offset+R600_HDMI_CNTL, 0x00000001, ~0x00001001); + + } else if (radeon_encoder->hdmi_audio_workaround) { + /* enable audio workaround and start delivering of audio frames */ + WREG32_P(offset+R600_HDMI_CNTL, 0x00001001, ~0x00001001); + + } else { + /* disable audio workaround and stop delivering of audio frames */ + WREG32_P(offset+R600_HDMI_CNTL, 0x00000000, ~0x00001001); + } +} + + +/* + * 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; + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + + if (!offset) + return; + + r600_audio_set_clock(encoder, mode->clock); + + WREG32(offset+R600_HDMI_UNKNOWN_0, 0x1000); + WREG32(offset+R600_HDMI_UNKNOWN_1, 0x0); + WREG32(offset+R600_HDMI_UNKNOWN_2, 0x1000); + + r600_hdmi_update_ACR(encoder, mode->clock); + + WREG32(offset+R600_HDMI_VIDEOCNTL, 0x13); + + WREG32(offset+R600_HDMI_VERSION, 0x202); + + r600_hdmi_videoinfoframe(encoder, RGB, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); + + /* it's unknown what these bits do excatly, but it's indeed quite usefull for debugging */ + WREG32(offset+R600_HDMI_AUDIO_DEBUG_0, 0x00FFFFFF); + WREG32(offset+R600_HDMI_AUDIO_DEBUG_1, 0x007FFFFF); + WREG32(offset+R600_HDMI_AUDIO_DEBUG_2, 0x00000001); + WREG32(offset+R600_HDMI_AUDIO_DEBUG_3, 0x00000001); + + r600_hdmi_audio_workaround(encoder); + + /* audio packets per line, does anyone know how to calc this ? */ + WREG32_P(offset+R600_HDMI_CNTL, 0x00040000, ~0x001F0000); + + /* update? reset? don't realy know */ + WREG32_P(offset+R600_HDMI_CNTL, 0x14000000, ~0x14000000); +} + +/* + * update settings with current parameters from audio engine + */ +void r600_hdmi_update_audio_settings(struct drm_encoder *encoder, + int channels, + int rate, + int bps, + uint8_t status_bits, + uint8_t category_code) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + + uint32_t iec; + + if (!offset) + return; + + DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n", + r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped", + channels, rate, bps); + DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n", + (int)status_bits, (int)category_code); + + iec = 0; + if (status_bits & AUDIO_STATUS_PROFESSIONAL) + iec |= 1 << 0; + if (status_bits & AUDIO_STATUS_NONAUDIO) + iec |= 1 << 1; + if (status_bits & AUDIO_STATUS_COPYRIGHT) + iec |= 1 << 2; + if (status_bits & AUDIO_STATUS_EMPHASIS) + iec |= 1 << 3; + + iec |= category_code << 8; + + switch (rate) { + case 32000: iec |= 0x3 << 24; break; + case 44100: iec |= 0x0 << 24; break; + case 88200: iec |= 0x8 << 24; break; + case 176400: iec |= 0xc << 24; break; + case 48000: iec |= 0x2 << 24; break; + case 96000: iec |= 0xa << 24; break; + case 192000: iec |= 0xe << 24; break; + } + + WREG32(offset+R600_HDMI_IEC60958_1, iec); + + iec = 0; + switch (bps) { + case 16: iec |= 0x2; break; + case 20: iec |= 0x3; break; + case 24: iec |= 0xb; break; + } + if (status_bits & AUDIO_STATUS_V) + iec |= 0x5 << 16; + + WREG32_P(offset+R600_HDMI_IEC60958_2, iec, ~0x5000f); + + /* 0x021 or 0x031 sets the audio frame length */ + WREG32(offset+R600_HDMI_AUDIOCNTL, 0x31); + r600_hdmi_audioinfoframe(encoder, channels-1, 0, 0, 0, 0, 0, 0, 0); + + r600_hdmi_audio_workaround(encoder); + + /* update? reset? don't realy know */ + WREG32_P(offset+R600_HDMI_CNTL, 0x04000000, ~0x04000000); +} + +/* + * enable/disable the HDMI engine + */ +void r600_hdmi_enable(struct drm_encoder *encoder, int enable) +{ + struct drm_device *dev = encoder->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset; + + if (!offset) + return; + + DRM_DEBUG("%s HDMI interface @ 0x%04X\n", enable ? "Enabling" : "Disabling", offset); + + /* some version of atombios ignore the enable HDMI flag + * so enabling/disabling HDMI was moved here for TMDS1+2 */ + switch (radeon_encoder->encoder_id) { + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: + WREG32_P(AVIVO_TMDSA_CNTL, enable ? 0x4 : 0x0, ~0x4); + WREG32(offset+R600_HDMI_ENABLE, enable ? 0x101 : 0x0); + break; + + case ENCODER_OBJECT_ID_INTERNAL_LVTM1: + WREG32_P(AVIVO_LVTMA_CNTL, enable ? 0x4 : 0x0, ~0x4); + WREG32(offset+R600_HDMI_ENABLE, enable ? 0x105 : 0x0); + break; + + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: + /* This part is doubtfull in my opinion */ + WREG32(offset+R600_HDMI_ENABLE, enable ? 0x110 : 0x0); + break; + + default: + DRM_ERROR("unknown HDMI output type\n"); + break; + } +} + +/* + * determin at which register offset the HDMI encoder is + */ +void r600_hdmi_init(struct drm_encoder *encoder) +{ + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + + switch (radeon_encoder->encoder_id) { + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: + radeon_encoder->hdmi_offset = R600_HDMI_TMDS1; + break; + + case ENCODER_OBJECT_ID_INTERNAL_LVTM1: + switch (r600_audio_tmds_index(encoder)) { + case 0: + radeon_encoder->hdmi_offset = R600_HDMI_TMDS1; + break; + case 1: + radeon_encoder->hdmi_offset = R600_HDMI_TMDS2; + break; + default: + radeon_encoder->hdmi_offset = 0; + break; + } + case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: + radeon_encoder->hdmi_offset = R600_HDMI_TMDS2; + break; + + case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: + radeon_encoder->hdmi_offset = R600_HDMI_DIG; + break; + + default: + radeon_encoder->hdmi_offset = 0; + break; + } + + DRM_DEBUG("using HDMI engine at offset 0x%04X for encoder 0x%x\n", + radeon_encoder->hdmi_offset, radeon_encoder->encoder_id); + + /* TODO: make this configureable */ + radeon_encoder->hdmi_audio_workaround = 0; +} |