/* * 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 * Rafał Miłecki */ #include <linux/hdmi.h> #include <drm/drmP.h> #include <drm/radeon_drm.h> #include "radeon.h" #include "radeon_asic.h" #include "evergreend.h" #include "atom.h" /* * update the N and CTS parameters for a given pixel clock rate */ static void evergreen_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(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr.cts_32khz)); WREG32(HDMI_ACR_32_1 + offset, acr.n_32khz); WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr.cts_44_1khz)); WREG32(HDMI_ACR_44_1 + offset, acr.n_44_1khz); WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr.cts_48khz)); WREG32(HDMI_ACR_48_1 + offset, acr.n_48khz); } static void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder) { struct radeon_device *rdev = encoder->dev->dev_private; struct drm_connector *connector; struct radeon_connector *radeon_connector = NULL; struct cea_sad *sads; int i, sad_count; static const u16 eld_reg_to_type[][2] = { { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP }, { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO }, }; list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) { if (connector->encoder == encoder) radeon_connector = to_radeon_connector(connector); } if (!radeon_connector) { DRM_ERROR("Couldn't find encoder's connector\n"); return; } sad_count = drm_edid_to_sad(radeon_connector->edid, &sads); if (sad_count < 0) { DRM_ERROR("Couldn't read SADs: %d\n", sad_count); return; } BUG_ON(!sads); for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) { u32 value = 0; int j; for (j = 0; j < sad_count; j++) { struct cea_sad *sad = &sads[j]; if (sad->format == eld_reg_to_type[i][1]) { value = MAX_CHANNELS(sad->channels) | DESCRIPTOR_BYTE_2(sad->byte2) | SUPPORTED_FREQUENCIES(sad->freq); if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM) value |= SUPPORTED_FREQUENCIES_STEREO(sad->freq); break; } } WREG32(eld_reg_to_type[i][0], value); } kfree(sads); } /* * build a HDMI Video Info Frame */ static void evergreen_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; /* Our header values (type, version, length) should be alright, Intel * is using the same. Checksum function also seems to be OK, it works * fine for audio infoframe. However calculated value is always lower * by 2 in comparison to fglrx. It breaks displaying anything in case * of TVs that strictly check the checksum. Hack it manually here to * workaround this issue. */ frame[0x0] += 2; WREG32(AFMT_AVI_INFO0 + offset, frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24)); WREG32(AFMT_AVI_INFO1 + offset, frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24)); WREG32(AFMT_AVI_INFO2 + offset, frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24)); WREG32(AFMT_AVI_INFO3 + offset, frame[0xC] | (frame[0xD] << 8)); } static void evergreen_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; struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc); u32 base_rate = 24000; if (!dig || !dig->afmt) return; /* 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 */ WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100); WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); WREG32(DCCG_AUDIO_DTO_SOURCE, DCCG_AUDIO_DTO0_SOURCE_SEL(radeon_crtc->crtc_id)); } /* * update the info frames with the data from the current display mode */ void evergreen_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; /* Silent, r600_hdmi_enable will raise WARN for us */ if (!dig->afmt->enabled) return; offset = dig->afmt->offset; evergreen_audio_set_dto(encoder, mode->clock); WREG32(HDMI_VBI_PACKET_CONTROL + offset, HDMI_NULL_SEND); /* send null packets when required */ WREG32(AFMT_AUDIO_CRC_CONTROL + offset, 0x1000); WREG32(HDMI_VBI_PACKET_CONTROL + offset, HDMI_NULL_SEND | /* send null packets when required */ HDMI_GC_SEND | /* send general control packets */ HDMI_GC_CONT); /* send general control packets every frame */ WREG32(HDMI_INFOFRAME_CONTROL0 + offset, HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */ HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */ WREG32(AFMT_INFOFRAME_CONTROL0 + offset, AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */ WREG32(HDMI_INFOFRAME_CONTROL1 + offset, HDMI_AUDIO_INFO_LINE(2)); /* anything other than 0 */ WREG32(HDMI_GC + offset, 0); /* unset HDMI_GC_AVMUTE */ WREG32(HDMI_AUDIO_PACKET_CONTROL + offset, HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */ HDMI_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_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */ /* fglrx clears sth in AFMT_AUDIO_PACKET_CONTROL2 here */ WREG32(HDMI_ACR_PACKET_CONTROL + offset, HDMI_ACR_AUTO_SEND | /* allow hw to sent ACR packets when required */ HDMI_ACR_SOURCE); /* select SW CTS value */ evergreen_hdmi_update_ACR(encoder, mode->clock); WREG32(AFMT_60958_0 + offset, AFMT_60958_CS_CHANNEL_NUMBER_L(1)); WREG32(AFMT_60958_1 + offset, AFMT_60958_CS_CHANNEL_NUMBER_R(2)); WREG32(AFMT_60958_2 + offset, AFMT_60958_CS_CHANNEL_NUMBER_2(3) | AFMT_60958_CS_CHANNEL_NUMBER_3(4) | AFMT_60958_CS_CHANNEL_NUMBER_4(5) | AFMT_60958_CS_CHANNEL_NUMBER_5(6) | AFMT_60958_CS_CHANNEL_NUMBER_6(7) | AFMT_60958_CS_CHANNEL_NUMBER_7(8)); /* fglrx sets 0x0001005f | (x & 0x00fc0000) in 0x5f78 here */ WREG32(AFMT_AUDIO_PACKET_CONTROL2 + offset, AFMT_AUDIO_CHANNEL_ENABLE(0xff)); /* fglrx sets 0x40 in 0x5f80 here */ evergreen_hdmi_write_sad_regs(encoder); 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; } evergreen_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer)); WREG32_OR(HDMI_INFOFRAME_CONTROL0 + offset, HDMI_AVI_INFO_SEND | /* enable AVI info frames */ HDMI_AVI_INFO_CONT); /* required for audio info values to be updated */ WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset, HDMI_AVI_INFO_LINE(2), /* anything other than 0 */ ~HDMI_AVI_INFO_LINE_MASK); WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset, AFMT_AUDIO_SAMPLE_SEND); /* send audio packets */ /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */ WREG32(AFMT_RAMP_CONTROL0 + offset, 0x00FFFFFF); WREG32(AFMT_RAMP_CONTROL1 + offset, 0x007FFFFF); WREG32(AFMT_RAMP_CONTROL2 + offset, 0x00000001); WREG32(AFMT_RAMP_CONTROL3 + offset, 0x00000001); } void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable) { struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; /* Silent, r600_hdmi_enable will raise WARN for us */ if (enable && dig->afmt->enabled) return; if (!enable && !dig->afmt->enabled) return; 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); }