Rev 1430 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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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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| 29 | #include "atom.h" |
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| 30 | |||
| 31 | #define AUDIO_TIMER_INTERVALL 100 /* 1/10 sekund should be enough */ |
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| 32 | |||
| 33 | /* |
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| 34 | * check if the chipset is supported |
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| 35 | */ |
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| 36 | static int r600_audio_chipset_supported(struct radeon_device *rdev) |
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| 37 | { |
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| 38 | return (rdev->family >= CHIP_R600 && rdev->family < CHIP_RV710) |
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| 39 | || rdev->family == CHIP_RS600 |
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| 40 | || rdev->family == CHIP_RS690 |
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| 41 | || rdev->family == CHIP_RS740; |
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| 42 | } |
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| 43 | |||
| 44 | /* |
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| 45 | * current number of channels |
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| 46 | */ |
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| 47 | static int r600_audio_channels(struct radeon_device *rdev) |
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| 48 | { |
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| 49 | return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1; |
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| 50 | } |
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| 51 | |||
| 52 | /* |
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| 53 | * current bits per sample |
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| 54 | */ |
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| 55 | static int r600_audio_bits_per_sample(struct radeon_device *rdev) |
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| 56 | { |
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| 57 | uint32_t value = (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0xF0) >> 4; |
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| 58 | switch (value) { |
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| 59 | case 0x0: return 8; |
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| 60 | case 0x1: return 16; |
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| 61 | case 0x2: return 20; |
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| 62 | case 0x3: return 24; |
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| 63 | case 0x4: return 32; |
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| 64 | } |
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| 65 | |||
| 66 | DRM_ERROR("Unknown bits per sample 0x%x using 16 instead.\n", (int)value); |
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| 67 | |||
| 68 | return 16; |
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| 69 | } |
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| 70 | |||
| 71 | /* |
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| 72 | * current sampling rate in HZ |
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| 73 | */ |
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| 74 | static int r600_audio_rate(struct radeon_device *rdev) |
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| 75 | { |
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| 76 | uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); |
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| 77 | uint32_t result; |
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| 78 | |||
| 79 | if (value & 0x4000) |
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| 80 | result = 44100; |
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| 81 | else |
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| 82 | result = 48000; |
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| 83 | |||
| 84 | result *= ((value >> 11) & 0x7) + 1; |
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| 85 | result /= ((value >> 8) & 0x7) + 1; |
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| 86 | |||
| 87 | return result; |
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| 88 | } |
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| 89 | |||
| 90 | /* |
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| 91 | * iec 60958 status bits |
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| 92 | */ |
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| 93 | static uint8_t r600_audio_status_bits(struct radeon_device *rdev) |
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| 94 | { |
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| 95 | return RREG32(R600_AUDIO_STATUS_BITS) & 0xff; |
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| 96 | } |
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| 97 | |||
| 98 | /* |
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| 99 | * iec 60958 category code |
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| 100 | */ |
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| 101 | static uint8_t r600_audio_category_code(struct radeon_device *rdev) |
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| 102 | { |
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| 103 | return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff; |
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| 104 | } |
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| 105 | |||
| 106 | /* |
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| 107 | * update all hdmi interfaces with current audio parameters |
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| 108 | */ |
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| 109 | static void r600_audio_update_hdmi(unsigned long param) |
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| 110 | { |
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| 111 | struct radeon_device *rdev = (struct radeon_device *)param; |
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| 112 | struct drm_device *dev = rdev->ddev; |
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| 113 | |||
| 114 | int channels = r600_audio_channels(rdev); |
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| 115 | int rate = r600_audio_rate(rdev); |
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| 116 | int bps = r600_audio_bits_per_sample(rdev); |
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| 117 | uint8_t status_bits = r600_audio_status_bits(rdev); |
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| 118 | uint8_t category_code = r600_audio_category_code(rdev); |
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| 119 | |||
| 120 | struct drm_encoder *encoder; |
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| 121 | int changes = 0; |
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| 122 | |||
| 123 | changes |= channels != rdev->audio_channels; |
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| 124 | changes |= rate != rdev->audio_rate; |
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| 125 | changes |= bps != rdev->audio_bits_per_sample; |
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| 126 | changes |= status_bits != rdev->audio_status_bits; |
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| 127 | changes |= category_code != rdev->audio_category_code; |
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| 128 | |||
| 129 | if (changes) { |
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| 130 | rdev->audio_channels = channels; |
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| 131 | rdev->audio_rate = rate; |
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| 132 | rdev->audio_bits_per_sample = bps; |
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| 133 | rdev->audio_status_bits = status_bits; |
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| 134 | rdev->audio_category_code = category_code; |
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| 135 | } |
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| 136 | |||
| 137 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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| 138 | if (changes || r600_hdmi_buffer_status_changed(encoder)) |
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| 139 | r600_hdmi_update_audio_settings( |
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| 140 | encoder, channels, |
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| 141 | rate, bps, status_bits, |
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| 142 | category_code); |
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| 143 | } |
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| 144 | |||
| 145 | // mod_timer(&rdev->audio_timer, |
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| 146 | // jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL)); |
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| 147 | } |
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| 148 | |||
| 149 | /* |
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| 150 | * initialize the audio vars and register the update timer |
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| 151 | */ |
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| 152 | int r600_audio_init(struct radeon_device *rdev) |
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| 153 | { |
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| 154 | if (!r600_audio_chipset_supported(rdev)) |
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| 155 | return 0; |
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| 156 | |||
| 157 | DRM_INFO("%s audio support", radeon_audio ? "Enabling" : "Disabling"); |
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| 158 | WREG32_P(R600_AUDIO_ENABLE, radeon_audio ? 0x81000000 : 0x0, ~0x81000000); |
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| 159 | |||
| 160 | rdev->audio_channels = -1; |
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| 161 | rdev->audio_rate = -1; |
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| 162 | rdev->audio_bits_per_sample = -1; |
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| 163 | rdev->audio_status_bits = 0; |
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| 164 | rdev->audio_category_code = 0; |
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| 165 | |||
| 166 | // setup_timer( |
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| 167 | // &rdev->audio_timer, |
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| 168 | // r600_audio_update_hdmi, |
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| 169 | // (unsigned long)rdev); |
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| 170 | |||
| 171 | // mod_timer(&rdev->audio_timer, jiffies + 1); |
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| 172 | |||
| 173 | return 0; |
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| 174 | } |
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| 175 | |||
| 176 | /* |
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| 177 | * determin how the encoders and audio interface is wired together |
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| 178 | */ |
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| 179 | int r600_audio_tmds_index(struct drm_encoder *encoder) |
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| 180 | { |
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| 181 | struct drm_device *dev = encoder->dev; |
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| 182 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); |
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| 183 | struct drm_encoder *other; |
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| 184 | |||
| 185 | switch (radeon_encoder->encoder_id) { |
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| 186 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: |
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| 187 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: |
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| 188 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: |
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| 189 | return 0; |
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| 190 | |||
| 191 | case ENCODER_OBJECT_ID_INTERNAL_LVTM1: |
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| 192 | /* special case check if an TMDS1 is present */ |
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| 193 | list_for_each_entry(other, &dev->mode_config.encoder_list, head) { |
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| 194 | if (to_radeon_encoder(other)->encoder_id == |
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| 195 | ENCODER_OBJECT_ID_INTERNAL_TMDS1) |
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| 196 | return 1; |
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| 197 | } |
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| 198 | return 0; |
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| 199 | |||
| 200 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: |
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| 201 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: |
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| 202 | return 1; |
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| 203 | |||
| 204 | default: |
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| 205 | DRM_ERROR("Unsupported encoder type 0x%02X\n", |
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| 206 | radeon_encoder->encoder_id); |
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| 207 | return -1; |
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| 208 | } |
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| 209 | } |
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| 210 | |||
| 211 | /* |
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| 212 | * atach the audio codec to the clock source of the encoder |
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| 213 | */ |
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| 214 | void r600_audio_set_clock(struct drm_encoder *encoder, int clock) |
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| 215 | { |
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| 216 | struct drm_device *dev = encoder->dev; |
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| 217 | struct radeon_device *rdev = dev->dev_private; |
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| 218 | struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); |
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| 219 | int base_rate = 48000; |
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| 220 | |||
| 221 | switch (radeon_encoder->encoder_id) { |
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| 222 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1: |
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| 223 | case ENCODER_OBJECT_ID_INTERNAL_LVTM1: |
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| 224 | WREG32_P(R600_AUDIO_TIMING, 0, ~0x301); |
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| 225 | break; |
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| 226 | |||
| 227 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY: |
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| 228 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: |
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| 229 | case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2: |
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| 230 | case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA: |
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| 231 | WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301); |
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| 232 | break; |
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| 233 | |||
| 234 | default: |
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| 235 | DRM_ERROR("Unsupported encoder type 0x%02X\n", |
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| 236 | radeon_encoder->encoder_id); |
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| 237 | return; |
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| 238 | } |
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| 239 | |||
| 240 | switch (r600_audio_tmds_index(encoder)) { |
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| 241 | case 0: |
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| 242 | WREG32(R600_AUDIO_PLL1_MUL, base_rate*50); |
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| 243 | WREG32(R600_AUDIO_PLL1_DIV, clock*100); |
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| 244 | WREG32(R600_AUDIO_CLK_SRCSEL, 0); |
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| 245 | break; |
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| 246 | |||
| 247 | case 1: |
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| 248 | WREG32(R600_AUDIO_PLL2_MUL, base_rate*50); |
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| 249 | WREG32(R600_AUDIO_PLL2_DIV, clock*100); |
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| 250 | WREG32(R600_AUDIO_CLK_SRCSEL, 1); |
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| 251 | break; |
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| 252 | } |
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| 253 | } |
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| 254 | |||
| 255 | /* |
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| 256 | * release the audio timer |
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| 257 | * TODO: How to do this correctly on SMP systems? |
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| 258 | */ |
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| 259 | void r600_audio_fini(struct radeon_device *rdev) |
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| 260 | { |
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| 261 | if (!r600_audio_chipset_supported(rdev)) |
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| 262 | return; |
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| 263 | |||
| 264 | WREG32_P(R600_AUDIO_ENABLE, 0x0, ~0x81000000); |
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| 265 | |||
| 266 | // del_timer(&rdev->audio_timer); |
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| 267 | } |