1/*
2 * Copyright 2013 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23#include <linux/hdmi.h>
24#include <drm/drm_edid.h>
25
26#include "dce6_afmt.h"
27#include "radeon.h"
28#include "radeon_audio.h"
29#include "sid.h"
30
31#define DCE8_DCCG_AUDIO_DTO1_PHASE 0x05b8
32#define DCE8_DCCG_AUDIO_DTO1_MODULE 0x05bc
33
34u32 dce6_endpoint_rreg(struct radeon_device *rdev,
35 u32 block_offset, u32 reg)
36{
37 unsigned long flags;
38 u32 r;
39
40 spin_lock_irqsave(&rdev->end_idx_lock, flags);
41 WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
42 r = RREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset);
43 spin_unlock_irqrestore(lock: &rdev->end_idx_lock, flags);
44
45 return r;
46}
47
48void dce6_endpoint_wreg(struct radeon_device *rdev,
49 u32 block_offset, u32 reg, u32 v)
50{
51 unsigned long flags;
52
53 spin_lock_irqsave(&rdev->end_idx_lock, flags);
54 if (ASIC_IS_DCE8(rdev))
55 WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
56 else
57 WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset,
58 AZ_ENDPOINT_REG_WRITE_EN | AZ_ENDPOINT_REG_INDEX(reg));
59 WREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset, v);
60 spin_unlock_irqrestore(lock: &rdev->end_idx_lock, flags);
61}
62
63static void dce6_afmt_get_connected_pins(struct radeon_device *rdev)
64{
65 int i;
66 u32 offset, tmp;
67
68 for (i = 0; i < rdev->audio.num_pins; i++) {
69 offset = rdev->audio.pin[i].offset;
70 tmp = RREG32_ENDPOINT(offset,
71 AZ_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT);
72 if (((tmp & PORT_CONNECTIVITY_MASK) >> PORT_CONNECTIVITY_SHIFT) == 1)
73 rdev->audio.pin[i].connected = false;
74 else
75 rdev->audio.pin[i].connected = true;
76 }
77}
78
79struct r600_audio_pin *dce6_audio_get_pin(struct radeon_device *rdev)
80{
81 struct drm_encoder *encoder;
82 struct radeon_encoder *radeon_encoder;
83 struct radeon_encoder_atom_dig *dig;
84 struct r600_audio_pin *pin = NULL;
85 int i, pin_count;
86
87 dce6_afmt_get_connected_pins(rdev);
88
89 for (i = 0; i < rdev->audio.num_pins; i++) {
90 if (rdev->audio.pin[i].connected) {
91 pin = &rdev->audio.pin[i];
92 pin_count = 0;
93
94 list_for_each_entry(encoder, &rdev->ddev->mode_config.encoder_list, head) {
95 if (radeon_encoder_is_digital(encoder)) {
96 radeon_encoder = to_radeon_encoder(encoder);
97 dig = radeon_encoder->enc_priv;
98 if (dig->pin == pin)
99 pin_count++;
100 }
101 }
102
103 if (pin_count == 0)
104 return pin;
105 }
106 }
107 if (!pin)
108 DRM_ERROR("No connected audio pins found!\n");
109 return pin;
110}
111
112void dce6_afmt_select_pin(struct drm_encoder *encoder)
113{
114 struct radeon_device *rdev = encoder->dev->dev_private;
115 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
116 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
117
118 if (!dig || !dig->afmt || !dig->pin)
119 return;
120
121 WREG32(AFMT_AUDIO_SRC_CONTROL + dig->afmt->offset,
122 AFMT_AUDIO_SRC_SELECT(dig->pin->id));
123}
124
125void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
126 struct drm_connector *connector,
127 struct drm_display_mode *mode)
128{
129 struct radeon_device *rdev = encoder->dev->dev_private;
130 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
131 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
132 u32 tmp = 0;
133
134 if (!dig || !dig->afmt || !dig->pin)
135 return;
136
137 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
138 if (connector->latency_present[1])
139 tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
140 AUDIO_LIPSYNC(connector->audio_latency[1]);
141 else
142 tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
143 } else {
144 if (connector->latency_present[0])
145 tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
146 AUDIO_LIPSYNC(connector->audio_latency[0]);
147 else
148 tmp = VIDEO_LIPSYNC(0) | AUDIO_LIPSYNC(0);
149 }
150 WREG32_ENDPOINT(dig->pin->offset,
151 AZ_F0_CODEC_PIN_CONTROL_RESPONSE_LIPSYNC, tmp);
152}
153
154void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
155 u8 *sadb, int sad_count)
156{
157 struct radeon_device *rdev = encoder->dev->dev_private;
158 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
159 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
160 u32 tmp;
161
162 if (!dig || !dig->afmt || !dig->pin)
163 return;
164
165 /* program the speaker allocation */
166 tmp = RREG32_ENDPOINT(dig->pin->offset,
167 AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
168 tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
169 /* set HDMI mode */
170 tmp |= HDMI_CONNECTION;
171 if (sad_count)
172 tmp |= SPEAKER_ALLOCATION(sadb[0]);
173 else
174 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
175 WREG32_ENDPOINT(dig->pin->offset,
176 AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
177}
178
179void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
180 u8 *sadb, int sad_count)
181{
182 struct radeon_device *rdev = encoder->dev->dev_private;
183 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
184 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
185 u32 tmp;
186
187 if (!dig || !dig->afmt || !dig->pin)
188 return;
189
190 /* program the speaker allocation */
191 tmp = RREG32_ENDPOINT(dig->pin->offset,
192 AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
193 tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
194 /* set DP mode */
195 tmp |= DP_CONNECTION;
196 if (sad_count)
197 tmp |= SPEAKER_ALLOCATION(sadb[0]);
198 else
199 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
200 WREG32_ENDPOINT(dig->pin->offset,
201 AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
202}
203
204void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
205 struct cea_sad *sads, int sad_count)
206{
207 int i;
208 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
209 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
210 struct radeon_device *rdev = encoder->dev->dev_private;
211 static const u16 eld_reg_to_type[][2] = {
212 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
213 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
214 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
215 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
216 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
217 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
218 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
219 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
220 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
221 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
222 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
223 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
224 };
225
226 if (!dig || !dig->afmt || !dig->pin)
227 return;
228
229 for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
230 u32 value = 0;
231 u8 stereo_freqs = 0;
232 int max_channels = -1;
233 int j;
234
235 for (j = 0; j < sad_count; j++) {
236 struct cea_sad *sad = &sads[j];
237
238 if (sad->format == eld_reg_to_type[i][1]) {
239 if (sad->channels > max_channels) {
240 value = MAX_CHANNELS(sad->channels) |
241 DESCRIPTOR_BYTE_2(sad->byte2) |
242 SUPPORTED_FREQUENCIES(sad->freq);
243 max_channels = sad->channels;
244 }
245
246 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
247 stereo_freqs |= sad->freq;
248 else
249 break;
250 }
251 }
252
253 value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
254
255 WREG32_ENDPOINT(dig->pin->offset, eld_reg_to_type[i][0], value);
256 }
257}
258
259void dce6_audio_enable(struct radeon_device *rdev,
260 struct r600_audio_pin *pin,
261 u8 enable_mask)
262{
263 if (!pin)
264 return;
265
266 WREG32_ENDPOINT(pin->offset, AZ_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
267 enable_mask ? AUDIO_ENABLED : 0);
268}
269
270void dce6_hdmi_audio_set_dto(struct radeon_device *rdev,
271 struct radeon_crtc *crtc, unsigned int clock)
272{
273 /* Two dtos; generally use dto0 for HDMI */
274 u32 value = 0;
275
276 if (crtc)
277 value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
278
279 WREG32(DCCG_AUDIO_DTO_SOURCE, value);
280
281 /* Express [24MHz / target pixel clock] as an exact rational
282 * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE
283 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
284 */
285 WREG32(DCCG_AUDIO_DTO0_PHASE, 24000);
286 WREG32(DCCG_AUDIO_DTO0_MODULE, clock);
287}
288
289void dce6_dp_audio_set_dto(struct radeon_device *rdev,
290 struct radeon_crtc *crtc, unsigned int clock)
291{
292 /* Two dtos; generally use dto1 for DP */
293 u32 value = 0;
294 value |= DCCG_AUDIO_DTO_SEL;
295
296 if (crtc)
297 value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
298
299 WREG32(DCCG_AUDIO_DTO_SOURCE, value);
300
301 /* Express [24MHz / target pixel clock] as an exact rational
302 * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE
303 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
304 */
305 if (ASIC_IS_DCE8(rdev)) {
306 unsigned int div = (RREG32(DENTIST_DISPCLK_CNTL) &
307 DENTIST_DPREFCLK_WDIVIDER_MASK) >>
308 DENTIST_DPREFCLK_WDIVIDER_SHIFT;
309 div = radeon_audio_decode_dfs_div(div);
310
311 if (div)
312 clock = clock * 100 / div;
313
314 WREG32(DCE8_DCCG_AUDIO_DTO1_PHASE, 24000);
315 WREG32(DCE8_DCCG_AUDIO_DTO1_MODULE, clock);
316 } else {
317 WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
318 WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
319 }
320}
321

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source code of linux/drivers/gpu/drm/radeon/dce6_afmt.c