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1403 | serge | 1 | /* |
2 | * Copyright 2008 Advanced Micro Devices, Inc. |
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3 | * Copyright 2008 Red Hat Inc. |
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4 | * Copyright 2009 Christian König. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the "Software"), |
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8 | * to deal in the Software without restriction, including without limitation |
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9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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10 | * and/or sell copies of the Software, and to permit persons to whom the |
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11 | * Software is furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included in |
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14 | * all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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22 | * OTHER DEALINGS IN THE SOFTWARE. |
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23 | * |
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24 | * Authors: Christian König |
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25 | */ |
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26 | #include "drmP.h" |
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27 | #include "radeon.h" |
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28 | #include "radeon_reg.h" |
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2005 | serge | 29 | #include "radeon_asic.h" |
1403 | serge | 30 | #include "atom.h" |
31 | |||
32 | #define AUDIO_TIMER_INTERVALL 100 /* 1/10 sekund should be enough */ |
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33 | |||
34 | /* |
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35 | * check if the chipset is supported |
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36 | */ |
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37 | static int r600_audio_chipset_supported(struct radeon_device *rdev) |
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38 | { |
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1963 | serge | 39 | return (rdev->family >= CHIP_R600 && rdev->family < CHIP_CEDAR) |
1403 | serge | 40 | || rdev->family == CHIP_RS600 |
41 | || rdev->family == CHIP_RS690 |
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42 | || rdev->family == CHIP_RS740; |
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43 | } |
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44 | |||
45 | /* |
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46 | * current number of channels |
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47 | */ |
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1963 | serge | 48 | int r600_audio_channels(struct radeon_device *rdev) |
1403 | serge | 49 | { |
50 | return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1; |
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51 | } |
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52 | |||
53 | /* |
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54 | * current bits per sample |
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55 | */ |
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1963 | serge | 56 | int r600_audio_bits_per_sample(struct radeon_device *rdev) |
1403 | serge | 57 | { |
58 | uint32_t value = (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0xF0) >> 4; |
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59 | switch (value) { |
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60 | case 0x0: return 8; |
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61 | case 0x1: return 16; |
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62 | case 0x2: return 20; |
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63 | case 0x3: return 24; |
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64 | case 0x4: return 32; |
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65 | } |
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66 | |||
1963 | serge | 67 | dev_err(rdev->dev, "Unknown bits per sample 0x%x using 16 instead\n", |
68 | (int)value); |
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1403 | serge | 69 | |
70 | return 16; |
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71 | } |
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72 | |||
73 | /* |
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74 | * current sampling rate in HZ |
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75 | */ |
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1963 | serge | 76 | int r600_audio_rate(struct radeon_device *rdev) |
1403 | serge | 77 | { |
78 | uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); |
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79 | uint32_t result; |
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80 | |||
81 | if (value & 0x4000) |
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82 | result = 44100; |
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83 | else |
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84 | result = 48000; |
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85 | |||
86 | result *= ((value >> 11) & 0x7) + 1; |
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87 | result /= ((value >> 8) & 0x7) + 1; |
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88 | |||
89 | return result; |
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90 | } |
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91 | |||
92 | /* |
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93 | * iec 60958 status bits |
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94 | */ |
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1963 | serge | 95 | uint8_t r600_audio_status_bits(struct radeon_device *rdev) |
1403 | serge | 96 | { |
97 | return RREG32(R600_AUDIO_STATUS_BITS) & 0xff; |
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98 | } |
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99 | |||
100 | /* |
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101 | * iec 60958 category code |
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102 | */ |
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1963 | serge | 103 | uint8_t r600_audio_category_code(struct radeon_device *rdev) |
1403 | serge | 104 | { |
105 | return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff; |
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106 | } |
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107 | |||
108 | /* |
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109 | * update all hdmi interfaces with current audio parameters |
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110 | */ |
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111 | static void r600_audio_update_hdmi(unsigned long param) |
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112 | { |
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113 | struct radeon_device *rdev = (struct radeon_device *)param; |
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114 | struct drm_device *dev = rdev->ddev; |
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115 | |||
116 | int channels = r600_audio_channels(rdev); |
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117 | int rate = r600_audio_rate(rdev); |
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118 | int bps = r600_audio_bits_per_sample(rdev); |
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119 | uint8_t status_bits = r600_audio_status_bits(rdev); |
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120 | uint8_t category_code = r600_audio_category_code(rdev); |
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121 | |||
122 | struct drm_encoder *encoder; |
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1963 | serge | 123 | int changes = 0, still_going = 0; |
1403 | serge | 124 | |
125 | changes |= channels != rdev->audio_channels; |
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126 | changes |= rate != rdev->audio_rate; |
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127 | changes |= bps != rdev->audio_bits_per_sample; |
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128 | changes |= status_bits != rdev->audio_status_bits; |
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129 | changes |= category_code != rdev->audio_category_code; |
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130 | |||
131 | if (changes) { |
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132 | rdev->audio_channels = channels; |
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133 | rdev->audio_rate = rate; |
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134 | rdev->audio_bits_per_sample = bps; |
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135 | rdev->audio_status_bits = status_bits; |
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136 | rdev->audio_category_code = category_code; |
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137 | } |
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138 | |||
139 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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1963 | serge | 140 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); |
141 | still_going |= radeon_encoder->audio_polling_active; |
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1403 | serge | 142 | if (changes || r600_hdmi_buffer_status_changed(encoder)) |
1963 | serge | 143 | r600_hdmi_update_audio_settings(encoder); |
1403 | serge | 144 | } |
145 | |||
146 | // mod_timer(&rdev->audio_timer, |
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147 | // jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL)); |
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148 | } |
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149 | |||
150 | /* |
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1430 | serge | 151 | * turn on/off audio engine |
152 | */ |
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153 | static void r600_audio_engine_enable(struct radeon_device *rdev, bool enable) |
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154 | { |
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1963 | serge | 155 | DRM_INFO("%s audio support\n", enable ? "Enabling" : "Disabling"); |
1430 | serge | 156 | WREG32_P(R600_AUDIO_ENABLE, enable ? 0x81000000 : 0x0, ~0x81000000); |
1963 | serge | 157 | rdev->audio_enabled = enable; |
1430 | serge | 158 | } |
159 | |||
160 | /* |
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1403 | serge | 161 | * initialize the audio vars and register the update timer |
162 | */ |
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163 | int r600_audio_init(struct radeon_device *rdev) |
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164 | { |
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1430 | serge | 165 | if (!radeon_audio || !r600_audio_chipset_supported(rdev)) |
1403 | serge | 166 | return 0; |
167 | |||
1430 | serge | 168 | r600_audio_engine_enable(rdev, true); |
1403 | serge | 169 | |
170 | rdev->audio_channels = -1; |
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171 | rdev->audio_rate = -1; |
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172 | rdev->audio_bits_per_sample = -1; |
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173 | rdev->audio_status_bits = 0; |
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174 | rdev->audio_category_code = 0; |
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175 | |||
176 | // setup_timer( |
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177 | // &rdev->audio_timer, |
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178 | // r600_audio_update_hdmi, |
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179 | // (unsigned long)rdev); |
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180 | |||
181 | // mod_timer(&rdev->audio_timer, jiffies + 1); |
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182 | |||
183 | return 0; |
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184 | } |
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185 | |||
186 | /* |
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187 | * atach the audio codec to the clock source of the encoder |
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188 | */ |
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189 | void r600_audio_set_clock(struct drm_encoder *encoder, int clock) |
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190 | { |
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191 | struct drm_device *dev = encoder->dev; |
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192 | struct radeon_device *rdev = dev->dev_private; |
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193 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); |
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1963 | serge | 194 | struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; |
1403 | serge | 195 | int base_rate = 48000; |
196 | |||
197 | switch (radeon_encoder->encoder_id) { |
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198 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: |
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199 | case ENCODER_OBJECT_ID_INTERNAL_LVTM1: |
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200 | WREG32_P(R600_AUDIO_TIMING, 0, ~0x301); |
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201 | break; |
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202 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: |
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203 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: |
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204 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: |
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205 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: |
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206 | WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301); |
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207 | break; |
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208 | default: |
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1963 | serge | 209 | dev_err(rdev->dev, "Unsupported encoder type 0x%02X\n", |
1403 | serge | 210 | radeon_encoder->encoder_id); |
211 | return; |
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212 | } |
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213 | |||
1963 | serge | 214 | switch (dig->dig_encoder) { |
1403 | serge | 215 | case 0: |
1963 | serge | 216 | WREG32(R600_AUDIO_PLL1_MUL, base_rate * 50); |
217 | WREG32(R600_AUDIO_PLL1_DIV, clock * 100); |
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1403 | serge | 218 | WREG32(R600_AUDIO_CLK_SRCSEL, 0); |
219 | break; |
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220 | |||
221 | case 1: |
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1963 | serge | 222 | WREG32(R600_AUDIO_PLL2_MUL, base_rate * 50); |
223 | WREG32(R600_AUDIO_PLL2_DIV, clock * 100); |
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1403 | serge | 224 | WREG32(R600_AUDIO_CLK_SRCSEL, 1); |
225 | break; |
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1963 | serge | 226 | default: |
227 | dev_err(rdev->dev, "Unsupported DIG on encoder 0x%02X\n", |
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228 | radeon_encoder->encoder_id); |
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229 | return; |
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1403 | serge | 230 | } |
231 | } |
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232 | |||
233 | /* |
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234 | * release the audio timer |
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235 | * TODO: How to do this correctly on SMP systems? |
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236 | */ |
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237 | void r600_audio_fini(struct radeon_device *rdev) |
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238 | { |
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1963 | serge | 239 | if (!rdev->audio_enabled) |
1403 | serge | 240 | return; |
241 | |||
1430 | serge | 242 | // del_timer(&rdev->audio_timer); |
1403 | serge | 243 | |
1430 | serge | 244 | r600_audio_engine_enable(rdev, false); |
1403 | serge | 245 | }> |