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