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[FreeBSD/releng/10.2.git] / sys / dev / drm2 / radeon / r600_audio.c
1 /*
2  * Copyright 2008 Advanced Micro Devices, Inc.
3  * Copyright 2008 Red Hat Inc.
4  * Copyright 2009 Christian König.
5  *
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:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
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.
23  *
24  * Authors: Christian König
25  */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <dev/drm2/drmP.h>
31 #include "radeon.h"
32 #include "radeon_reg.h"
33 #include "radeon_asic.h"
34 #include "atom.h"
35
36 /*
37  * check if enc_priv stores radeon_encoder_atom_dig
38  */
39 static bool radeon_dig_encoder(struct drm_encoder *encoder)
40 {
41         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
42         switch (radeon_encoder->encoder_id) {
43         case ENCODER_OBJECT_ID_INTERNAL_LVDS:
44         case ENCODER_OBJECT_ID_INTERNAL_TMDS1:
45         case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
46         case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
47         case ENCODER_OBJECT_ID_INTERNAL_DVO1:
48         case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
49         case ENCODER_OBJECT_ID_INTERNAL_DDI:
50         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
51         case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
52         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
53         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
54                 return true;
55         }
56         return false;
57 }
58
59 /*
60  * check if the chipset is supported
61  */
62 static int r600_audio_chipset_supported(struct radeon_device *rdev)
63 {
64         return (rdev->family >= CHIP_R600 && !ASIC_IS_DCE6(rdev))
65                 || rdev->family == CHIP_RS600
66                 || rdev->family == CHIP_RS690
67                 || rdev->family == CHIP_RS740;
68 }
69
70 struct r600_audio r600_audio_status(struct radeon_device *rdev)
71 {
72         struct r600_audio status;
73         uint32_t value;
74
75         value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL);
76
77         /* number of channels */
78         status.channels = (value & 0x7) + 1;
79
80         /* bits per sample */
81         switch ((value & 0xF0) >> 4) {
82         case 0x0:
83                 status.bits_per_sample = 8;
84                 break;
85         case 0x1:
86                 status.bits_per_sample = 16;
87                 break;
88         case 0x2:
89                 status.bits_per_sample = 20;
90                 break;
91         case 0x3:
92                 status.bits_per_sample = 24;
93                 break;
94         case 0x4:
95                 status.bits_per_sample = 32;
96                 break;
97         default:
98                 dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n",
99                         (int)value);
100                 status.bits_per_sample = 16;
101         }
102
103         /* current sampling rate in HZ */
104         if (value & 0x4000)
105                 status.rate = 44100;
106         else
107                 status.rate = 48000;
108         status.rate *= ((value >> 11) & 0x7) + 1;
109         status.rate /= ((value >> 8) & 0x7) + 1;
110
111         value = RREG32(R600_AUDIO_STATUS_BITS);
112
113         /* iec 60958 status bits */
114         status.status_bits = value & 0xff;
115
116         /* iec 60958 category code */
117         status.category_code = (value >> 8) & 0xff;
118
119         return status;
120 }
121
122 /*
123  * update all hdmi interfaces with current audio parameters
124  */
125 void r600_audio_update_hdmi(void *arg, int pending)
126 {
127         struct radeon_device *rdev = arg;
128         struct drm_device *dev = rdev->ddev;
129         struct r600_audio audio_status = r600_audio_status(rdev);
130         struct drm_encoder *encoder;
131         bool changed = false;
132
133         if (rdev->audio_status.channels != audio_status.channels ||
134             rdev->audio_status.rate != audio_status.rate ||
135             rdev->audio_status.bits_per_sample != audio_status.bits_per_sample ||
136             rdev->audio_status.status_bits != audio_status.status_bits ||
137             rdev->audio_status.category_code != audio_status.category_code) {
138                 rdev->audio_status = audio_status;
139                 changed = true;
140         }
141
142         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
143                 if (!radeon_dig_encoder(encoder))
144                         continue;
145                 if (changed || r600_hdmi_buffer_status_changed(encoder))
146                         r600_hdmi_update_audio_settings(encoder);
147         }
148 }
149
150 /*
151  * turn on/off audio engine
152  */
153 static void r600_audio_engine_enable(struct radeon_device *rdev, bool enable)
154 {
155         u32 value = 0;
156         DRM_INFO("%s audio support\n", enable ? "Enabling" : "Disabling");
157         if (ASIC_IS_DCE4(rdev)) {
158                 if (enable) {
159                         value |= 0x81000000; /* Required to enable audio */
160                         value |= 0x0e1000f0; /* fglrx sets that too */
161                 }
162                 WREG32(EVERGREEN_AUDIO_ENABLE, value);
163         } else {
164                 WREG32_P(R600_AUDIO_ENABLE,
165                          enable ? 0x81000000 : 0x0, ~0x81000000);
166         }
167         rdev->audio_enabled = enable;
168 }
169
170 /*
171  * initialize the audio vars
172  */
173 int r600_audio_init(struct radeon_device *rdev)
174 {
175         if (!radeon_audio || !r600_audio_chipset_supported(rdev))
176                 return 0;
177
178         r600_audio_engine_enable(rdev, true);
179
180         rdev->audio_status.channels = -1;
181         rdev->audio_status.rate = -1;
182         rdev->audio_status.bits_per_sample = -1;
183         rdev->audio_status.status_bits = 0;
184         rdev->audio_status.category_code = 0;
185
186         return 0;
187 }
188
189 /*
190  * atach the audio codec to the clock source of the encoder
191  */
192 void r600_audio_set_clock(struct drm_encoder *encoder, int clock)
193 {
194         struct drm_device *dev = encoder->dev;
195         struct radeon_device *rdev = dev->dev_private;
196         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
197         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
198         struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
199         int base_rate = 48000;
200
201         switch (radeon_encoder->encoder_id) {
202         case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
203         case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
204                 WREG32_P(R600_AUDIO_TIMING, 0, ~0x301);
205                 break;
206         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
207         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
208         case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
209         case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
210                 WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301);
211                 break;
212         default:
213                 dev_err(rdev->dev, "Unsupported encoder type 0x%02X\n",
214                           radeon_encoder->encoder_id);
215                 return;
216         }
217
218         if (ASIC_IS_DCE4(rdev)) {
219                 /* TODO: other PLLs? */
220                 WREG32(EVERGREEN_AUDIO_PLL1_MUL, base_rate * 10);
221                 WREG32(EVERGREEN_AUDIO_PLL1_DIV, clock * 10);
222                 WREG32(EVERGREEN_AUDIO_PLL1_UNK, 0x00000071);
223
224                 /* Select DTO source */
225                 WREG32(0x5ac, radeon_crtc->crtc_id);
226         } else {
227                 switch (dig->dig_encoder) {
228                 case 0:
229                         WREG32(R600_AUDIO_PLL1_MUL, base_rate * 50);
230                         WREG32(R600_AUDIO_PLL1_DIV, clock * 100);
231                         WREG32(R600_AUDIO_CLK_SRCSEL, 0);
232                         break;
233
234                 case 1:
235                         WREG32(R600_AUDIO_PLL2_MUL, base_rate * 50);
236                         WREG32(R600_AUDIO_PLL2_DIV, clock * 100);
237                         WREG32(R600_AUDIO_CLK_SRCSEL, 1);
238                         break;
239                 default:
240                         dev_err(rdev->dev,
241                                 "Unsupported DIG on encoder 0x%02X\n",
242                                 radeon_encoder->encoder_id);
243                         return;
244                 }
245         }
246 }
247
248 /*
249  * release the audio timer
250  * TODO: How to do this correctly on SMP systems?
251  */
252 void r600_audio_fini(struct radeon_device *rdev)
253 {
254         if (!rdev->audio_enabled)
255                 return;
256
257         r600_audio_engine_enable(rdev, false);
258 }