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OpenCloudOS-Kernel/drivers/gpu/drm/radeon/r600_hdmi.c

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/*
* 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 <linux/gcd.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 */
{ 25175, 4096, 25175, 28224, 125875, 6144, 25175 }, /* 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 */
{ 74176, 4096, 74176, 5733, 75335, 6144, 74176 }, /* 74.25/1.001 MHz */
{ 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */
{ 148352, 4096, 148352, 5733, 150670, 6144, 148352 }, /* 148.50/1.001 MHz */
{ 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */
};
/*
* 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)
{
int n, cts;
unsigned long div, mul;
/* Safe, but overly large values */
n = 128 * freq;
cts = clock * 1000;
/* Smallest valid fraction */
div = gcd(n, cts);
n /= div;
cts /= div;
/*
* The optimal N is 128*freq/1000. Calculate the closest larger
* value that doesn't truncate any bits.
*/
mul = ((128*freq/1000) + (n-1))/n;
n *= mul;
cts *= mul;
/* Check that we are in spec (not always possible) */
if (n < (128*freq/1500))
printk(KERN_WARNING "Calculated ACR N value is too small. You may experience audio problems.\n");
if (n > (128*freq/300))
printk(KERN_WARNING "Calculated ACR N value is too large. You may experience audio problems.\n");
*N = n;
*CTS = cts;
DRM_DEBUG("Calculated 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;
/* Precalculated values for common clocks */
for (i = 0; i < ARRAY_SIZE(r600_hdmi_predefined_acr); i++) {
if (r600_hdmi_predefined_acr[i].clock == clock)
return r600_hdmi_predefined_acr[i];
}
/* And odd clocks get manually calculated */
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);
}
static 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;
u32 max_ratio = clock / base_rate;
u32 dto_phase;
u32 dto_modulo = clock;
u32 wallclock_ratio;
u32 dto_cntl;
if (!dig || !dig->afmt)
return;
if (max_ratio >= 8) {
dto_phase = 192 * 1000;
wallclock_ratio = 3;
} else if (max_ratio >= 4) {
dto_phase = 96 * 1000;
wallclock_ratio = 2;
} else if (max_ratio >= 2) {
dto_phase = 48 * 1000;
wallclock_ratio = 1;
} else {
dto_phase = 24 * 1000;
wallclock_ratio = 0;
}
/* 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) {
dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);
WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo);
WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
} else {
dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl);
WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase);
WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo);
WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
}
} else {
/* according to the reg specs, this should DCE3.2 only, but in
* practice it seems to cover DCE2.0/3.0/3.1 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 */
}
}
}
static void dce3_2_afmt_write_speaker_allocation(struct drm_encoder *encoder)
{
struct radeon_device *rdev = encoder->dev->dev_private;
struct drm_connector *connector;
struct radeon_connector *radeon_connector = NULL;
u32 tmp;
u8 *sadb;
int sad_count;
/* XXX: setting this register causes hangs on some asics */
return;
list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
if (connector->encoder == encoder) {
radeon_connector = to_radeon_connector(connector);
break;
}
}
if (!radeon_connector) {
DRM_ERROR("Couldn't find encoder's connector\n");
return;
}
sad_count = drm_edid_to_speaker_allocation(radeon_connector->edid, &sadb);
if (sad_count < 0) {
DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count);
return;
}
/* program the speaker allocation */
tmp = RREG32(AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
/* set HDMI mode */
tmp |= HDMI_CONNECTION;
if (sad_count)
tmp |= SPEAKER_ALLOCATION(sadb[0]);
else
tmp |= SPEAKER_ALLOCATION(5); /* stereo */
WREG32(AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
kfree(sadb);
}
static void dce3_2_afmt_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);
break;
}
}
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;
u8 stereo_freqs = 0;
int max_channels = -1;
int j;
for (j = 0; j < sad_count; j++) {
struct cea_sad *sad = &sads[j];
if (sad->format == eld_reg_to_type[i][1]) {
if (sad->channels > max_channels) {
value = MAX_CHANNELS(sad->channels) |
DESCRIPTOR_BYTE_2(sad->byte2) |
SUPPORTED_FREQUENCIES(sad->freq);
max_channels = sad->channels;
}
if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
stereo_freqs |= sad->freq;
else
break;
}
}
value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
WREG32(eld_reg_to_type[i][0], value);
}
kfree(sads);
}
/*
* 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 */
}
if (ASIC_IS_DCE32(rdev)) {
dce3_2_afmt_write_speaker_allocation(encoder);
dce3_2_afmt_write_sad_regs(encoder);
}
WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */
HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
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_pin 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;
if (enable)
dig->afmt->pin = r600_audio_get_pin(rdev);
else
dig->afmt->pin = NULL;
/* 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);
}
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