/*
* 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 "radeon_asic.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);
/* 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(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 (!radeon_encoder->hdmi_audio_workaround ||
r600_hdmi_is_audio_buffer_filled(encoder)) {
/* disable audio workaround */
WREG32_P(offset+R600_HDMI_CNTL, 0x00000001, ~0x00001001);
} else {
/* enable audio workaround */
WREG32_P(offset+R600_HDMI_CNTL, 0x00001001, ~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 (ASIC_IS_DCE5(rdev))
return;
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 useful 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 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;
uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
int channels = r600_audio_channels(rdev);
int rate = r600_audio_rate(rdev);
int bps = r600_audio_bits_per_sample(rdev);
uint8_t status_bits = r600_audio_status_bits(rdev);
uint8_t category_code = r600_audio_category_code(rdev);
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);
}
static int r600_hdmi_find_free_block(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
struct drm_encoder *encoder;
struct radeon_encoder *radeon_encoder;
bool free_blocks[3] = { true, true, true };
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
radeon_encoder = to_radeon_encoder(encoder);
switch (radeon_encoder->hdmi_offset) {
case R600_HDMI_BLOCK1:
free_blocks[0] = false;
break;
case R600_HDMI_BLOCK2:
free_blocks[1] = false;
break;
case R600_HDMI_BLOCK3:
free_blocks[2] = false;
break;
}
}
if (rdev->family == CHIP_RS600 || rdev->family == CHIP_RS690 ||
rdev->family == CHIP_RS740) {
return free_blocks[0] ? R600_HDMI_BLOCK1 : 0;
} else if (rdev->family >= CHIP_R600) {
if (free_blocks[0])
return R600_HDMI_BLOCK1;
else if (free_blocks[1])
return R600_HDMI_BLOCK2;
}
return 0;
}
static void r600_hdmi_assign_block(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;
u16 eg_offsets[] = {
EVERGREEN_CRTC0_REGISTER_OFFSET,
EVERGREEN_CRTC1_REGISTER_OFFSET,
EVERGREEN_CRTC2_REGISTER_OFFSET,
EVERGREEN_CRTC3_REGISTER_OFFSET,
EVERGREEN_CRTC4_REGISTER_OFFSET,
EVERGREEN_CRTC5_REGISTER_OFFSET,
};
if (!dig) {
dev_err(rdev->dev, "Enabling HDMI on non-dig encoder\n");
return;
}
if (ASIC_IS_DCE5(rdev)) {
/* TODO */
} else if (ASIC_IS_DCE4(rdev)) {
if (dig->dig_encoder >= ARRAY_SIZE(eg_offsets)) {
dev_err(rdev->dev, "Enabling HDMI on unknown dig\n");
return;
}
radeon_encoder->hdmi_offset = EVERGREEN_HDMI_BASE +
eg_offsets[dig->dig_encoder];
radeon_encoder->hdmi_config_offset = radeon_encoder->hdmi_offset
+ EVERGREEN_HDMI_CONFIG_OFFSET;
} else if (ASIC_IS_DCE3(rdev)) {
radeon_encoder->hdmi_offset = dig->dig_encoder ?
R600_HDMI_BLOCK3 : R600_HDMI_BLOCK1;
if (ASIC_IS_DCE32(rdev))
radeon_encoder->hdmi_config_offset = dig->dig_encoder ?
R600_HDMI_CONFIG2 : R600_HDMI_CONFIG1;
} else if (rdev->family >= CHIP_R600 || rdev->family == CHIP_RS600 ||
rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
radeon_encoder->hdmi_offset = r600_hdmi_find_free_block(dev);
}
}
/*
* enable the HDMI engine
*/
void r600_hdmi_enable(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;
if (ASIC_IS_DCE5(rdev))
return;
if (!radeon_encoder->hdmi_offset) {
r600_hdmi_assign_block(encoder);
if (!radeon_encoder->hdmi_offset) {
dev_warn(rdev->dev, "Could not find HDMI block for "
"0x%x encoder\n", radeon_encoder->encoder_id);
return;
}
}
offset = radeon_encoder->hdmi_offset;
if (ASIC_IS_DCE5(rdev)) {
/* TODO */
} else if (ASIC_IS_DCE4(rdev)) {
WREG32_P(radeon_encoder->hdmi_config_offset + 0xc, 0x1, ~0x1);
} else if (ASIC_IS_DCE32(rdev)) {
WREG32_P(radeon_encoder->hdmi_config_offset + 0x4, 0x1, ~0x1);
} else if (ASIC_IS_DCE3(rdev)) {
/* TODO */
} else if (rdev->family >= CHIP_R600) {
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
WREG32_P(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN,
~AVIVO_TMDSA_CNTL_HDMI_EN);
WREG32(offset + R600_HDMI_ENABLE, 0x101);
break;
case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
WREG32_P(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN,
~AVIVO_LVTMA_CNTL_HDMI_EN);
WREG32(offset + R600_HDMI_ENABLE, 0x105);
break;
default:
dev_err(rdev->dev, "Unknown HDMI output type\n");
break;
}
}
if (rdev->irq.installed
&& rdev->family != CHIP_RS600
&& rdev->family != CHIP_RS690
&& rdev->family != CHIP_RS740
&& !ASIC_IS_DCE4(rdev)) {
/* if irq is available use it */
rdev->irq.hdmi[offset == R600_HDMI_BLOCK1 ? 0 : 1] = true;
radeon_irq_set(rdev);
r600_audio_disable_polling(encoder);
} else {
/* if not fallback to polling */
r600_audio_enable_polling(encoder);
}
DRM_DEBUG("Enabling HDMI interface @ 0x%04X for encoder 0x%x\n",
radeon_encoder->hdmi_offset, radeon_encoder->encoder_id);
}
/*
* disable the HDMI engine
*/
void r600_hdmi_disable(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;
if (ASIC_IS_DCE5(rdev))
return;
offset = radeon_encoder->hdmi_offset;
if (!offset) {
dev_err(rdev->dev, "Disabling not enabled HDMI\n");
return;
}
DRM_DEBUG("Disabling HDMI interface @ 0x%04X for encoder 0x%x\n",
offset, radeon_encoder->encoder_id);
/* disable irq */
rdev->irq.hdmi[offset == R600_HDMI_BLOCK1 ? 0 : 1] = false;
radeon_irq_set(rdev);
/* disable polling */
r600_audio_disable_polling(encoder);
if (ASIC_IS_DCE5(rdev)) {
/* TODO */
} else if (ASIC_IS_DCE4(rdev)) {
WREG32_P(radeon_encoder->hdmi_config_offset + 0xc, 0, ~0x1);
} else if (ASIC_IS_DCE32(rdev)) {
WREG32_P(radeon_encoder->hdmi_config_offset + 0x4, 0, ~0x1);
} else if (rdev->family >= CHIP_R600 && !ASIC_IS_DCE3(rdev)) {
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
WREG32_P(AVIVO_TMDSA_CNTL, 0,
~AVIVO_TMDSA_CNTL_HDMI_EN);
WREG32(offset + R600_HDMI_ENABLE, 0);
break;
case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
WREG32_P(AVIVO_LVTMA_CNTL, 0,
~AVIVO_LVTMA_CNTL_HDMI_EN);
WREG32(offset + R600_HDMI_ENABLE, 0);
break;
default:
dev_err(rdev->dev, "Unknown HDMI output type\n");
break;
}
}
radeon_encoder->hdmi_offset = 0;
radeon_encoder->hdmi_config_offset = 0;
}
