1 | /*
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2 | * Copyright (c) 2025 Jiri Svoboda
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3 | * Copyright (c) 2011 Jan Vesely
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4 | * All rights reserved.
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5 | *
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6 | * Redistribution and use in source and binary forms, with or without
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7 | * modification, are permitted provided that the following conditions
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8 | * are met:
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9 | *
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10 | * - Redistributions of source code must retain the above copyright
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11 | * notice, this list of conditions and the following disclaimer.
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12 | * - Redistributions in binary form must reproduce the above copyright
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13 | * notice, this list of conditions and the following disclaimer in the
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14 | * documentation and/or other materials provided with the distribution.
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15 | * - The name of the author may not be used to endorse or promote products
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16 | * derived from this software without specific prior written permission.
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17 | *
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18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 | */
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29 |
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30 | #include <errno.h>
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31 | #include <str_error.h>
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32 | #include <macros.h>
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33 | #include <audio_mixer_iface.h>
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34 | #include <audio_pcm_iface.h>
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35 |
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36 | #include "ddf_log.h"
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37 | #include "dsp_commands.h"
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38 | #include "dsp.h"
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39 | #include "sb16.h"
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40 |
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41 | extern audio_mixer_iface_t sb_mixer_iface;
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42 | extern audio_pcm_iface_t sb_pcm_iface;
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43 |
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44 | static ddf_dev_ops_t sb_mixer_ops = {
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45 | .interfaces[AUDIO_MIXER_IFACE] = &sb_mixer_iface,
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46 | };
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47 |
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48 | static ddf_dev_ops_t sb_pcm_ops = {
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49 | .interfaces[AUDIO_PCM_BUFFER_IFACE] = &sb_pcm_iface,
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50 | };
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51 |
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52 | /*
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53 | * ISA interrupts should be edge-triggered so there should be no need for
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54 | * irq code magic, but we still need to ack those interrupts ASAP.
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55 | */
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56 | static const irq_cmd_t irq_cmds[] = {
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57 | { .cmd = CMD_PIO_READ_8, .dstarg = 1 }, /* Address patched at runtime */
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58 | { .cmd = CMD_PIO_READ_8, .dstarg = 1 }, /* Address patched at runtime */
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59 | { .cmd = CMD_ACCEPT },
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60 | };
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61 |
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62 | static inline sb_mixer_type_t sb_mixer_type_by_dsp_version(
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63 | unsigned major, unsigned minor)
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64 | {
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65 | switch (major) {
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66 | case 1:
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67 | return SB_MIXER_NONE; /* SB 1.5 and early 2.0 = no mixer chip */
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68 | case 2:
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69 | return (minor == 0) ? SB_MIXER_NONE : SB_MIXER_CT1335;
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70 | case 3:
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71 | return SB_MIXER_CT1345; /* SB Pro */
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72 | case 4:
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73 | return SB_MIXER_CT1745; /* SB 16 */
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74 | default:
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75 | return SB_MIXER_UNKNOWN;
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76 | }
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77 | }
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78 |
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79 | size_t sb16_irq_code_size(void)
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80 | {
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81 | return ARRAY_SIZE(irq_cmds);
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82 | }
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83 |
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84 | void sb16_irq_code(addr_range_t *regs, int dma8, int dma16, irq_cmd_t cmds[],
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85 | irq_pio_range_t ranges[])
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86 | {
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87 | assert(regs);
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88 | assert(dma8 > 0 && dma8 < 4);
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89 |
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90 | sb16_regs_t *registers = RNGABSPTR(*regs);
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91 | memcpy(cmds, irq_cmds, sizeof(irq_cmds));
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92 | cmds[0].addr = (void *) ®isters->dsp_read_status;
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93 | ranges[0].base = (uintptr_t) registers;
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94 | ranges[0].size = sizeof(*registers);
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95 | if (dma16 > 4 && dma16 < 8) {
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96 | /* Valid dma16 */
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97 | cmds[1].addr = (void *) ®isters->dma16_ack;
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98 | } else {
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99 | cmds[1].cmd = CMD_ACCEPT;
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100 | }
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101 | }
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102 |
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103 | errno_t sb16_init_sb16(sb16_t *sb, addr_range_t *regs, ddf_dev_t *dev, int dma8,
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104 | int dma16)
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105 | {
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106 | assert(sb);
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107 |
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108 | /* Setup registers */
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109 | errno_t ret = pio_enable_range(regs, (void **) &sb->regs);
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110 | if (ret != EOK)
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111 | return ret;
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112 | ddf_log_note("PIO registers at %p accessible.", sb->regs);
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113 |
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114 | /* Initialize DSP */
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115 | ddf_fun_t *dsp_fun = ddf_fun_create(dev, fun_exposed, "pcm");
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116 | if (!dsp_fun) {
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117 | ddf_log_error("Failed to create dsp function.");
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118 | return ENOMEM;
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119 | }
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120 |
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121 | ret = sb_dsp_init(&sb->dsp, sb->regs, dev, dma8, dma16);
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122 | if (ret != EOK) {
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123 | ddf_log_error("Failed to initialize SB DSP: %s.",
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124 | str_error(ret));
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125 | ddf_fun_destroy(dsp_fun);
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126 | return ret;
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127 | }
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128 |
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129 | ddf_fun_set_ops(dsp_fun, &sb_pcm_ops);
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130 | ddf_log_note("Sound blaster DSP (%x.%x) initialized.",
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131 | sb->dsp.version.major, sb->dsp.version.minor);
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132 |
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133 | ret = ddf_fun_bind(dsp_fun);
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134 | if (ret != EOK) {
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135 | ddf_log_error(
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136 | "Failed to bind PCM function: %s.", str_error(ret));
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137 | ddf_fun_destroy(dsp_fun);
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138 | return ret;
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139 | }
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140 |
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141 | ret = ddf_fun_add_to_category(dsp_fun, "audio-pcm");
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142 | if (ret != EOK) {
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143 | ddf_log_error("Failed register PCM function in category: %s.",
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144 | str_error(ret));
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145 | ddf_fun_unbind(dsp_fun);
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146 | ddf_fun_destroy(dsp_fun);
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147 | return ret;
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148 | }
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149 |
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150 | /* Initialize mixer */
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151 | const sb_mixer_type_t mixer_type = sb_mixer_type_by_dsp_version(
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152 | sb->dsp.version.major, sb->dsp.version.minor);
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153 |
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154 | ddf_fun_t *mixer_fun = ddf_fun_create(dev, fun_exposed, "control");
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155 | if (!mixer_fun) {
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156 | ddf_log_error("Failed to create mixer function.");
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157 | ddf_fun_unbind(dsp_fun);
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158 | ddf_fun_destroy(dsp_fun);
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159 | return ENOMEM;
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160 | }
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161 | ret = sb_mixer_init(&sb->mixer, sb->regs, mixer_type);
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162 | if (ret != EOK) {
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163 | ddf_log_error("Failed to initialize SB mixer: %s.",
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164 | str_error(ret));
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165 | ddf_fun_unbind(dsp_fun);
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166 | ddf_fun_destroy(dsp_fun);
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167 | ddf_fun_destroy(mixer_fun);
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168 | return ret;
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169 | }
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170 |
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171 | ddf_log_note("Initialized mixer: %s.",
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172 | sb_mixer_type_str(sb->mixer.type));
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173 | ddf_fun_set_ops(mixer_fun, &sb_mixer_ops);
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174 |
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175 | ret = ddf_fun_bind(mixer_fun);
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176 | if (ret != EOK) {
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177 | ddf_log_error(
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178 | "Failed to bind mixer function: %s.", str_error(ret));
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179 | ddf_fun_destroy(mixer_fun);
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180 | ddf_fun_unbind(dsp_fun);
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181 | ddf_fun_destroy(dsp_fun);
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182 | return ret;
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183 | }
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184 |
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185 | return EOK;
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186 | }
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187 |
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188 | errno_t sb16_init_mpu(sb16_t *sb, addr_range_t *regs)
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189 | {
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190 | sb->mpu_regs = NULL;
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191 | return ENOTSUP;
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192 | }
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193 |
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194 | errno_t sb16_quiesce(sb16_t *sb)
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195 | {
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196 | sb_dsp_quiesce(&sb->dsp);
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197 | return EOK;
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198 | }
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199 |
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200 | void sb16_interrupt(sb16_t *sb)
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201 | {
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202 | assert(sb);
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203 | /*
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204 | * The acknowledgment of interrupts on DSP version 4.xx is different;
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205 | * It can contain MPU-401 indicator and DMA16 transfers are acked
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206 | * differently
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207 | */
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208 | if (sb->dsp.version.major >= 4) {
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209 | pio_write_8(&sb->regs->mixer_address, MIXER_IRQ_STATUS_ADDRESS);
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210 | const uint8_t irq_mask = pio_read_8(&sb->regs->mixer_data);
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211 | /* Third bit is MPU-401 interrupt */
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212 | if (irq_mask & 0x4) {
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213 | return;
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214 | }
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215 | } else {
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216 | ddf_log_debug("SB16 interrupt.");
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217 | }
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218 | sb_dsp_interrupt(&sb->dsp);
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219 | }
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