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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 | { | |
38 | return rdev->family >= CHIP_R600 | |
39 | || rdev->family == CHIP_RS600 | |
40 | || rdev->family == CHIP_RS690 | |
41 | || rdev->family == CHIP_RS740; | |
42 | } | |
43 | ||
44 | /* | |
45 | * current number of channels | |
46 | */ | |
47 | static int r600_audio_channels(struct radeon_device *rdev) | |
48 | { | |
49 | return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1; | |
50 | } | |
51 | ||
52 | /* | |
53 | * current bits per sample | |
54 | */ | |
55 | static int r600_audio_bits_per_sample(struct radeon_device *rdev) | |
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 | ||
66 | DRM_ERROR("Unknown bits per sample 0x%x using 16 instead.\n", (int)value); | |
67 | ||
68 | return 16; | |
69 | } | |
70 | ||
71 | /* | |
72 | * current sampling rate in HZ | |
73 | */ | |
74 | static int r600_audio_rate(struct radeon_device *rdev) | |
75 | { | |
76 | uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); | |
77 | uint32_t result; | |
78 | ||
79 | if (value & 0x4000) | |
80 | result = 44100; | |
81 | else | |
82 | result = 48000; | |
83 | ||
84 | result *= ((value >> 11) & 0x7) + 1; | |
85 | result /= ((value >> 8) & 0x7) + 1; | |
86 | ||
87 | return result; | |
88 | } | |
89 | ||
90 | /* | |
91 | * iec 60958 status bits | |
92 | */ | |
93 | static uint8_t r600_audio_status_bits(struct radeon_device *rdev) | |
94 | { | |
95 | return RREG32(R600_AUDIO_STATUS_BITS) & 0xff; | |
96 | } | |
97 | ||
98 | /* | |
99 | * iec 60958 category code | |
100 | */ | |
101 | static uint8_t r600_audio_category_code(struct radeon_device *rdev) | |
102 | { | |
103 | return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff; | |
104 | } | |
105 | ||
106 | /* | |
107 | * update all hdmi interfaces with current audio parameters | |
108 | */ | |
109 | static void r600_audio_update_hdmi(unsigned long param) | |
110 | { | |
111 | struct radeon_device *rdev = (struct radeon_device *)param; | |
112 | struct drm_device *dev = rdev->ddev; | |
113 | ||
114 | int channels = r600_audio_channels(rdev); | |
115 | int rate = r600_audio_rate(rdev); | |
116 | int bps = r600_audio_bits_per_sample(rdev); | |
117 | uint8_t status_bits = r600_audio_status_bits(rdev); | |
118 | uint8_t category_code = r600_audio_category_code(rdev); | |
119 | ||
120 | struct drm_encoder *encoder; | |
121 | int changes = 0; | |
122 | ||
123 | changes |= channels != rdev->audio_channels; | |
124 | changes |= rate != rdev->audio_rate; | |
125 | changes |= bps != rdev->audio_bits_per_sample; | |
126 | changes |= status_bits != rdev->audio_status_bits; | |
127 | changes |= category_code != rdev->audio_category_code; | |
128 | ||
129 | if (changes) { | |
130 | rdev->audio_channels = channels; | |
131 | rdev->audio_rate = rate; | |
132 | rdev->audio_bits_per_sample = bps; | |
133 | rdev->audio_status_bits = status_bits; | |
134 | rdev->audio_category_code = category_code; | |
135 | } | |
136 | ||
137 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
138 | if (changes || r600_hdmi_buffer_status_changed(encoder)) | |
139 | r600_hdmi_update_audio_settings( | |
140 | encoder, channels, | |
141 | rate, bps, status_bits, | |
142 | category_code); | |
143 | } | |
144 | ||
145 | mod_timer(&rdev->audio_timer, | |
146 | jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL)); | |
147 | } | |
148 | ||
149 | /* | |
150 | * initialize the audio vars and register the update timer | |
151 | */ | |
152 | int r600_audio_init(struct radeon_device *rdev) | |
153 | { | |
154 | if (!r600_audio_chipset_supported(rdev)) | |
155 | return 0; | |
156 | ||
157 | DRM_INFO("%s audio support", radeon_audio ? "Enabling" : "Disabling"); | |
158 | WREG32_P(R600_AUDIO_ENABLE, radeon_audio ? 0x81000000 : 0x0, ~0x81000000); | |
159 | ||
160 | rdev->audio_channels = -1; | |
161 | rdev->audio_rate = -1; | |
162 | rdev->audio_bits_per_sample = -1; | |
163 | rdev->audio_status_bits = 0; | |
164 | rdev->audio_category_code = 0; | |
165 | ||
166 | setup_timer( | |
167 | &rdev->audio_timer, | |
168 | r600_audio_update_hdmi, | |
169 | (unsigned long)rdev); | |
170 | ||
171 | mod_timer(&rdev->audio_timer, jiffies + 1); | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | /* | |
177 | * determin how the encoders and audio interface is wired together | |
178 | */ | |
179 | int r600_audio_tmds_index(struct drm_encoder *encoder) | |
180 | { | |
181 | struct drm_device *dev = encoder->dev; | |
182 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); | |
183 | struct drm_encoder *other; | |
184 | ||
185 | switch (radeon_encoder->encoder_id) { | |
186 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: | |
187 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: | |
188 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: | |
189 | return 0; | |
190 | ||
191 | case ENCODER_OBJECT_ID_INTERNAL_LVTM1: | |
192 | /* special case check if an TMDS1 is present */ | |
193 | list_for_each_entry(other, &dev->mode_config.encoder_list, head) { | |
194 | if (to_radeon_encoder(other)->encoder_id == | |
195 | ENCODER_OBJECT_ID_INTERNAL_TMDS1) | |
196 | return 1; | |
197 | } | |
198 | return 0; | |
199 | ||
200 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: | |
201 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: | |
202 | return 1; | |
203 | ||
204 | default: | |
205 | DRM_ERROR("Unsupported encoder type 0x%02X\n", | |
206 | radeon_encoder->encoder_id); | |
207 | return -1; | |
208 | } | |
209 | } | |
210 | ||
211 | /* | |
212 | * atach the audio codec to the clock source of the encoder | |
213 | */ | |
214 | void r600_audio_set_clock(struct drm_encoder *encoder, int clock) | |
215 | { | |
216 | struct drm_device *dev = encoder->dev; | |
217 | struct radeon_device *rdev = dev->dev_private; | |
218 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); | |
219 | int base_rate = 48000; | |
220 | ||
221 | switch (radeon_encoder->encoder_id) { | |
222 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: | |
223 | case ENCODER_OBJECT_ID_INTERNAL_LVTM1: | |
224 | WREG32_P(R600_AUDIO_TIMING, 0, ~0x301); | |
225 | break; | |
226 | ||
227 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: | |
228 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: | |
229 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: | |
230 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: | |
231 | WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301); | |
232 | break; | |
233 | ||
234 | default: | |
235 | DRM_ERROR("Unsupported encoder type 0x%02X\n", | |
236 | radeon_encoder->encoder_id); | |
237 | return; | |
238 | } | |
239 | ||
240 | switch (r600_audio_tmds_index(encoder)) { | |
241 | case 0: | |
242 | WREG32(R600_AUDIO_PLL1_MUL, base_rate*50); | |
243 | WREG32(R600_AUDIO_PLL1_DIV, clock*100); | |
244 | WREG32(R600_AUDIO_CLK_SRCSEL, 0); | |
245 | break; | |
246 | ||
247 | case 1: | |
248 | WREG32(R600_AUDIO_PLL2_MUL, base_rate*50); | |
249 | WREG32(R600_AUDIO_PLL2_DIV, clock*100); | |
250 | WREG32(R600_AUDIO_CLK_SRCSEL, 1); | |
251 | break; | |
252 | } | |
253 | } | |
254 | ||
255 | /* | |
256 | * release the audio timer | |
257 | * TODO: How to do this correctly on SMP systems? | |
258 | */ | |
259 | void r600_audio_fini(struct radeon_device *rdev) | |
260 | { | |
261 | if (!r600_audio_chipset_supported(rdev)) | |
262 | return; | |
263 | ||
264 | WREG32_P(R600_AUDIO_ENABLE, 0x0, ~0x81000000); | |
265 | ||
266 | del_timer(&rdev->audio_timer); | |
267 | } |