2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Christian König.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
24 * Authors: Christian König
27 #include <linux/hdmi.h>
29 #include <drm/radeon_drm.h>
31 #include "radeon_asic.h"
32 #include "evergreend.h"
36 * update the N and CTS parameters for a given pixel clock rate
38 static void evergreen_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
40 struct drm_device *dev = encoder->dev;
41 struct radeon_device *rdev = dev->dev_private;
42 struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);
43 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
44 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
45 uint32_t offset = dig->afmt->offset;
47 WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr.cts_32khz));
48 WREG32(HDMI_ACR_32_1 + offset, acr.n_32khz);
50 WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr.cts_44_1khz));
51 WREG32(HDMI_ACR_44_1 + offset, acr.n_44_1khz);
53 WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr.cts_48khz));
54 WREG32(HDMI_ACR_48_1 + offset, acr.n_48khz);
57 static void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder)
59 struct radeon_device *rdev = encoder->dev->dev_private;
60 struct drm_connector *connector;
61 struct radeon_connector *radeon_connector = NULL;
65 static const u16 eld_reg_to_type[][2] = {
66 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
67 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
68 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
69 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
70 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
71 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
72 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
73 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
74 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
75 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
76 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
77 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
80 list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
81 if (connector->encoder == encoder)
82 radeon_connector = to_radeon_connector(connector);
85 if (!radeon_connector) {
86 DRM_ERROR("Couldn't find encoder's connector\n");
90 sad_count = drm_edid_to_sad(radeon_connector->edid, &sads);
92 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
97 for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
101 for (j = 0; j < sad_count; j++) {
102 struct cea_sad *sad = &sads[j];
104 if (sad->format == eld_reg_to_type[i][1]) {
105 value = MAX_CHANNELS(sad->channels) |
106 DESCRIPTOR_BYTE_2(sad->byte2) |
107 SUPPORTED_FREQUENCIES(sad->freq);
108 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
109 value |= SUPPORTED_FREQUENCIES_STEREO(sad->freq);
113 WREG32(eld_reg_to_type[i][0], value);
120 * build a HDMI Video Info Frame
122 static void evergreen_hdmi_update_avi_infoframe(struct drm_encoder *encoder,
123 void *buffer, size_t size)
125 struct drm_device *dev = encoder->dev;
126 struct radeon_device *rdev = dev->dev_private;
127 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
128 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
129 uint32_t offset = dig->afmt->offset;
130 uint8_t *frame = buffer + 3;
131 uint8_t *header = buffer;
133 WREG32(AFMT_AVI_INFO0 + offset,
134 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
135 WREG32(AFMT_AVI_INFO1 + offset,
136 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
137 WREG32(AFMT_AVI_INFO2 + offset,
138 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
139 WREG32(AFMT_AVI_INFO3 + offset,
140 frame[0xC] | (frame[0xD] << 8) | (header[1] << 24));
143 static void evergreen_audio_set_dto(struct drm_encoder *encoder, u32 clock)
145 struct drm_device *dev = encoder->dev;
146 struct radeon_device *rdev = dev->dev_private;
147 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
148 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
149 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
150 u32 base_rate = 24000;
151 u32 max_ratio = clock / base_rate;
153 u32 dto_modulo = clock;
157 if (!dig || !dig->afmt)
160 if (max_ratio >= 8) {
161 dto_phase = 192 * 1000;
163 } else if (max_ratio >= 4) {
164 dto_phase = 96 * 1000;
166 } else if (max_ratio >= 2) {
167 dto_phase = 48 * 1000;
170 dto_phase = 24 * 1000;
173 dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
174 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
175 WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);
177 /* XXX two dtos; generally use dto0 for hdmi */
178 /* Express [24MHz / target pixel clock] as an exact rational
179 * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE
180 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
182 WREG32(DCCG_AUDIO_DTO_SOURCE, DCCG_AUDIO_DTO0_SOURCE_SEL(radeon_crtc->crtc_id));
183 WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
184 WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo);
189 * update the info frames with the data from the current display mode
191 void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
193 struct drm_device *dev = encoder->dev;
194 struct radeon_device *rdev = dev->dev_private;
195 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
196 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
197 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
198 struct hdmi_avi_infoframe frame;
202 if (!dig || !dig->afmt)
205 /* Silent, r600_hdmi_enable will raise WARN for us */
206 if (!dig->afmt->enabled)
208 offset = dig->afmt->offset;
210 evergreen_audio_set_dto(encoder, mode->clock);
212 WREG32(HDMI_VBI_PACKET_CONTROL + offset,
213 HDMI_NULL_SEND); /* send null packets when required */
215 WREG32(AFMT_AUDIO_CRC_CONTROL + offset, 0x1000);
217 WREG32(HDMI_VBI_PACKET_CONTROL + offset,
218 HDMI_NULL_SEND | /* send null packets when required */
219 HDMI_GC_SEND | /* send general control packets */
220 HDMI_GC_CONT); /* send general control packets every frame */
222 WREG32(HDMI_INFOFRAME_CONTROL0 + offset,
223 HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
224 HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
226 WREG32(AFMT_INFOFRAME_CONTROL0 + offset,
227 AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
229 WREG32(HDMI_INFOFRAME_CONTROL1 + offset,
230 HDMI_AUDIO_INFO_LINE(2)); /* anything other than 0 */
232 WREG32(HDMI_GC + offset, 0); /* unset HDMI_GC_AVMUTE */
234 WREG32(HDMI_AUDIO_PACKET_CONTROL + offset,
235 HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */
236 HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
238 WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
239 AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
241 /* fglrx clears sth in AFMT_AUDIO_PACKET_CONTROL2 here */
243 WREG32(HDMI_ACR_PACKET_CONTROL + offset,
244 HDMI_ACR_AUTO_SEND | /* allow hw to sent ACR packets when required */
245 HDMI_ACR_SOURCE); /* select SW CTS value */
247 evergreen_hdmi_update_ACR(encoder, mode->clock);
249 WREG32(AFMT_60958_0 + offset,
250 AFMT_60958_CS_CHANNEL_NUMBER_L(1));
252 WREG32(AFMT_60958_1 + offset,
253 AFMT_60958_CS_CHANNEL_NUMBER_R(2));
255 WREG32(AFMT_60958_2 + offset,
256 AFMT_60958_CS_CHANNEL_NUMBER_2(3) |
257 AFMT_60958_CS_CHANNEL_NUMBER_3(4) |
258 AFMT_60958_CS_CHANNEL_NUMBER_4(5) |
259 AFMT_60958_CS_CHANNEL_NUMBER_5(6) |
260 AFMT_60958_CS_CHANNEL_NUMBER_6(7) |
261 AFMT_60958_CS_CHANNEL_NUMBER_7(8));
263 /* fglrx sets 0x0001005f | (x & 0x00fc0000) in 0x5f78 here */
265 WREG32(AFMT_AUDIO_PACKET_CONTROL2 + offset,
266 AFMT_AUDIO_CHANNEL_ENABLE(0xff));
268 /* fglrx sets 0x40 in 0x5f80 here */
269 evergreen_hdmi_write_sad_regs(encoder);
271 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
273 DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
277 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
279 DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);
283 evergreen_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));
285 WREG32_OR(HDMI_INFOFRAME_CONTROL0 + offset,
286 HDMI_AVI_INFO_SEND | /* enable AVI info frames */
287 HDMI_AVI_INFO_CONT); /* required for audio info values to be updated */
289 WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset,
290 HDMI_AVI_INFO_LINE(2), /* anything other than 0 */
291 ~HDMI_AVI_INFO_LINE_MASK);
293 WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset,
294 AFMT_AUDIO_SAMPLE_SEND); /* send audio packets */
296 /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
297 WREG32(AFMT_RAMP_CONTROL0 + offset, 0x00FFFFFF);
298 WREG32(AFMT_RAMP_CONTROL1 + offset, 0x007FFFFF);
299 WREG32(AFMT_RAMP_CONTROL2 + offset, 0x00000001);
300 WREG32(AFMT_RAMP_CONTROL3 + offset, 0x00000001);
303 void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
305 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
306 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
308 if (!dig || !dig->afmt)
311 /* Silent, r600_hdmi_enable will raise WARN for us */
312 if (enable && dig->afmt->enabled)
314 if (!enable && !dig->afmt->enabled)
317 dig->afmt->enabled = enable;
319 DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
320 enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);