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dafc3bd5 CK |
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 | #include "drmP.h" | |
27 | #include "radeon.h" | |
28 | #include "radeon_reg.h" | |
3574dda4 | 29 | #include "radeon_asic.h" |
dafc3bd5 CK |
30 | #include "atom.h" |
31 | ||
32 | #define AUDIO_TIMER_INTERVALL 100 /* 1/10 sekund should be enough */ | |
33 | ||
34 | /* | |
35 | * check if the chipset is supported | |
36 | */ | |
37 | static int r600_audio_chipset_supported(struct radeon_device *rdev) | |
38 | { | |
16823d16 | 39 | return (rdev->family >= CHIP_R600 && rdev->family < CHIP_CEDAR) |
dafc3bd5 CK |
40 | || rdev->family == CHIP_RS600 |
41 | || rdev->family == CHIP_RS690 | |
42 | || rdev->family == CHIP_RS740; | |
43 | } | |
44 | ||
45 | /* | |
46 | * current number of channels | |
47 | */ | |
58bd0863 | 48 | int r600_audio_channels(struct radeon_device *rdev) |
dafc3bd5 CK |
49 | { |
50 | return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1; | |
51 | } | |
52 | ||
53 | /* | |
54 | * current bits per sample | |
55 | */ | |
58bd0863 | 56 | int r600_audio_bits_per_sample(struct radeon_device *rdev) |
dafc3bd5 CK |
57 | { |
58 | uint32_t value = (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0xF0) >> 4; | |
59 | switch (value) { | |
60 | case 0x0: return 8; | |
61 | case 0x1: return 16; | |
62 | case 0x2: return 20; | |
63 | case 0x3: return 24; | |
64 | case 0x4: return 32; | |
65 | } | |
66 | ||
219de62a RM |
67 | dev_err(rdev->dev, "Unknown bits per sample 0x%x using 16 instead\n", |
68 | (int)value); | |
dafc3bd5 CK |
69 | |
70 | return 16; | |
71 | } | |
72 | ||
73 | /* | |
74 | * current sampling rate in HZ | |
75 | */ | |
58bd0863 | 76 | int r600_audio_rate(struct radeon_device *rdev) |
dafc3bd5 CK |
77 | { |
78 | uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); | |
79 | uint32_t result; | |
80 | ||
81 | if (value & 0x4000) | |
82 | result = 44100; | |
83 | else | |
84 | result = 48000; | |
85 | ||
86 | result *= ((value >> 11) & 0x7) + 1; | |
87 | result /= ((value >> 8) & 0x7) + 1; | |
88 | ||
89 | return result; | |
90 | } | |
91 | ||
92 | /* | |
93 | * iec 60958 status bits | |
94 | */ | |
58bd0863 | 95 | uint8_t r600_audio_status_bits(struct radeon_device *rdev) |
dafc3bd5 CK |
96 | { |
97 | return RREG32(R600_AUDIO_STATUS_BITS) & 0xff; | |
98 | } | |
99 | ||
100 | /* | |
101 | * iec 60958 category code | |
102 | */ | |
58bd0863 | 103 | uint8_t r600_audio_category_code(struct radeon_device *rdev) |
dafc3bd5 CK |
104 | { |
105 | return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff; | |
106 | } | |
107 | ||
f2594933 CK |
108 | /* |
109 | * schedule next audio update event | |
110 | */ | |
111 | void r600_audio_schedule_polling(struct radeon_device *rdev) | |
112 | { | |
113 | mod_timer(&rdev->audio_timer, | |
114 | jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL)); | |
115 | } | |
116 | ||
dafc3bd5 CK |
117 | /* |
118 | * update all hdmi interfaces with current audio parameters | |
119 | */ | |
120 | static void r600_audio_update_hdmi(unsigned long param) | |
121 | { | |
122 | struct radeon_device *rdev = (struct radeon_device *)param; | |
123 | struct drm_device *dev = rdev->ddev; | |
124 | ||
125 | int channels = r600_audio_channels(rdev); | |
126 | int rate = r600_audio_rate(rdev); | |
127 | int bps = r600_audio_bits_per_sample(rdev); | |
128 | uint8_t status_bits = r600_audio_status_bits(rdev); | |
129 | uint8_t category_code = r600_audio_category_code(rdev); | |
130 | ||
131 | struct drm_encoder *encoder; | |
58bd0863 | 132 | int changes = 0, still_going = 0; |
dafc3bd5 CK |
133 | |
134 | changes |= channels != rdev->audio_channels; | |
135 | changes |= rate != rdev->audio_rate; | |
136 | changes |= bps != rdev->audio_bits_per_sample; | |
137 | changes |= status_bits != rdev->audio_status_bits; | |
138 | changes |= category_code != rdev->audio_category_code; | |
139 | ||
140 | if (changes) { | |
141 | rdev->audio_channels = channels; | |
142 | rdev->audio_rate = rate; | |
143 | rdev->audio_bits_per_sample = bps; | |
144 | rdev->audio_status_bits = status_bits; | |
145 | rdev->audio_category_code = category_code; | |
146 | } | |
147 | ||
148 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
58bd0863 | 149 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); |
f2594933 CK |
150 | still_going |= radeon_encoder->audio_polling_active; |
151 | if (changes || r600_hdmi_buffer_status_changed(encoder)) | |
152 | r600_hdmi_update_audio_settings(encoder); | |
dafc3bd5 CK |
153 | } |
154 | ||
219de62a RM |
155 | if (still_going) |
156 | r600_audio_schedule_polling(rdev); | |
dafc3bd5 CK |
157 | } |
158 | ||
5230aea6 RM |
159 | /* |
160 | * turn on/off audio engine | |
161 | */ | |
162 | static void r600_audio_engine_enable(struct radeon_device *rdev, bool enable) | |
163 | { | |
219de62a | 164 | DRM_INFO("%s audio support\n", enable ? "Enabling" : "Disabling"); |
5230aea6 | 165 | WREG32_P(R600_AUDIO_ENABLE, enable ? 0x81000000 : 0x0, ~0x81000000); |
7eea7e9e | 166 | rdev->audio_enabled = enable; |
5230aea6 RM |
167 | } |
168 | ||
dafc3bd5 CK |
169 | /* |
170 | * initialize the audio vars and register the update timer | |
171 | */ | |
172 | int r600_audio_init(struct radeon_device *rdev) | |
173 | { | |
c8792d5e | 174 | if (!radeon_audio || !r600_audio_chipset_supported(rdev)) |
dafc3bd5 CK |
175 | return 0; |
176 | ||
c8792d5e | 177 | r600_audio_engine_enable(rdev, true); |
dafc3bd5 CK |
178 | |
179 | rdev->audio_channels = -1; | |
180 | rdev->audio_rate = -1; | |
181 | rdev->audio_bits_per_sample = -1; | |
182 | rdev->audio_status_bits = 0; | |
183 | rdev->audio_category_code = 0; | |
184 | ||
185 | setup_timer( | |
186 | &rdev->audio_timer, | |
187 | r600_audio_update_hdmi, | |
188 | (unsigned long)rdev); | |
189 | ||
58bd0863 CK |
190 | return 0; |
191 | } | |
192 | ||
193 | /* | |
194 | * enable the polling timer, to check for status changes | |
195 | */ | |
196 | void r600_audio_enable_polling(struct drm_encoder *encoder) | |
197 | { | |
198 | struct drm_device *dev = encoder->dev; | |
199 | struct radeon_device *rdev = dev->dev_private; | |
200 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); | |
201 | ||
219de62a RM |
202 | DRM_DEBUG("r600_audio_enable_polling: %d\n", |
203 | radeon_encoder->audio_polling_active); | |
58bd0863 CK |
204 | if (radeon_encoder->audio_polling_active) |
205 | return; | |
206 | ||
207 | radeon_encoder->audio_polling_active = 1; | |
7eea7e9e RM |
208 | if (rdev->audio_enabled) |
209 | mod_timer(&rdev->audio_timer, jiffies + 1); | |
58bd0863 | 210 | } |
dafc3bd5 | 211 | |
58bd0863 CK |
212 | /* |
213 | * disable the polling timer, so we get no more status updates | |
214 | */ | |
215 | void r600_audio_disable_polling(struct drm_encoder *encoder) | |
216 | { | |
217 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); | |
219de62a RM |
218 | DRM_DEBUG("r600_audio_disable_polling: %d\n", |
219 | radeon_encoder->audio_polling_active); | |
58bd0863 | 220 | radeon_encoder->audio_polling_active = 0; |
dafc3bd5 CK |
221 | } |
222 | ||
dafc3bd5 CK |
223 | /* |
224 | * atach the audio codec to the clock source of the encoder | |
225 | */ | |
226 | void r600_audio_set_clock(struct drm_encoder *encoder, int clock) | |
227 | { | |
228 | struct drm_device *dev = encoder->dev; | |
229 | struct radeon_device *rdev = dev->dev_private; | |
230 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); | |
2cd6218c | 231 | struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; |
dafc3bd5 CK |
232 | int base_rate = 48000; |
233 | ||
234 | switch (radeon_encoder->encoder_id) { | |
235 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: | |
236 | case ENCODER_OBJECT_ID_INTERNAL_LVTM1: | |
237 | WREG32_P(R600_AUDIO_TIMING, 0, ~0x301); | |
238 | break; | |
dafc3bd5 CK |
239 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: |
240 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: | |
241 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: | |
242 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: | |
243 | WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301); | |
244 | break; | |
dafc3bd5 | 245 | default: |
219de62a | 246 | dev_err(rdev->dev, "Unsupported encoder type 0x%02X\n", |
dafc3bd5 CK |
247 | radeon_encoder->encoder_id); |
248 | return; | |
249 | } | |
250 | ||
2cd6218c | 251 | switch (dig->dig_encoder) { |
dafc3bd5 | 252 | case 0: |
3fe373d9 RM |
253 | WREG32(R600_AUDIO_PLL1_MUL, base_rate * 50); |
254 | WREG32(R600_AUDIO_PLL1_DIV, clock * 100); | |
dafc3bd5 CK |
255 | WREG32(R600_AUDIO_CLK_SRCSEL, 0); |
256 | break; | |
257 | ||
258 | case 1: | |
3fe373d9 RM |
259 | WREG32(R600_AUDIO_PLL2_MUL, base_rate * 50); |
260 | WREG32(R600_AUDIO_PLL2_DIV, clock * 100); | |
dafc3bd5 CK |
261 | WREG32(R600_AUDIO_CLK_SRCSEL, 1); |
262 | break; | |
2cd6218c RM |
263 | default: |
264 | dev_err(rdev->dev, "Unsupported DIG on encoder 0x%02X\n", | |
265 | radeon_encoder->encoder_id); | |
266 | return; | |
dafc3bd5 CK |
267 | } |
268 | } | |
269 | ||
270 | /* | |
271 | * release the audio timer | |
272 | * TODO: How to do this correctly on SMP systems? | |
273 | */ | |
274 | void r600_audio_fini(struct radeon_device *rdev) | |
275 | { | |
7eea7e9e | 276 | if (!rdev->audio_enabled) |
dafc3bd5 CK |
277 | return; |
278 | ||
dafc3bd5 | 279 | del_timer(&rdev->audio_timer); |
5230aea6 RM |
280 | |
281 | r600_audio_engine_enable(rdev, false); | |
dafc3bd5 | 282 | } |