1 /**************************************************************************** 2 3 Copyright Echo Digital Audio Corporation (c) 1998 - 2004 4 All rights reserved 5 www.echoaudio.com 6 7 This file is part of Echo Digital Audio's generic driver library. 8 9 Echo Digital Audio's generic driver library is free software; 10 you can redistribute it and/or modify it under the terms of 11 the GNU General Public License as published by the Free Software 12 Foundation. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, 22 MA 02111-1307, USA. 23 24 ************************************************************************* 25 26 Translation from C++ and adaptation for use in ALSA-Driver 27 were made by Giuliano Pochini <pochini@shiny.it> 28 29 ****************************************************************************/ 30 31 32 static int read_dsp(struct echoaudio *chip, u32 *data); 33 static int set_professional_spdif(struct echoaudio *chip, char prof); 34 static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic); 35 static int check_asic_status(struct echoaudio *chip); 36 static int update_flags(struct echoaudio *chip); 37 38 39 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) 40 { 41 int err; 42 43 DE_INIT(("init_hw() - Layla20\n")); 44 if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA20)) 45 return -ENODEV; 46 47 if ((err = init_dsp_comm_page(chip))) { 48 DE_INIT(("init_hw - could not initialize DSP comm page\n")); 49 return err; 50 } 51 52 chip->device_id = device_id; 53 chip->subdevice_id = subdevice_id; 54 chip->bad_board = TRUE; 55 chip->has_midi = TRUE; 56 chip->dsp_code_to_load = FW_LAYLA20_DSP; 57 chip->input_clock_types = 58 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF | 59 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER; 60 chip->output_clock_types = 61 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER; 62 63 if ((err = load_firmware(chip)) < 0) 64 return err; 65 chip->bad_board = FALSE; 66 67 DE_INIT(("init_hw done\n")); 68 return err; 69 } 70 71 72 73 static int set_mixer_defaults(struct echoaudio *chip) 74 { 75 chip->professional_spdif = FALSE; 76 return init_line_levels(chip); 77 } 78 79 80 81 static u32 detect_input_clocks(const struct echoaudio *chip) 82 { 83 u32 clocks_from_dsp, clock_bits; 84 85 /* Map the DSP clock detect bits to the generic driver clock detect bits */ 86 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 87 88 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 89 90 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) 91 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 92 93 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) { 94 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER) 95 clock_bits |= ECHO_CLOCK_BIT_SUPER; 96 else 97 clock_bits |= ECHO_CLOCK_BIT_WORD; 98 } 99 100 return clock_bits; 101 } 102 103 104 105 /* ASIC status check - some cards have one or two ASICs that need to be 106 loaded. Once that load is complete, this function is called to see if 107 the load was successful. 108 If this load fails, it does not necessarily mean that the hardware is 109 defective - the external box may be disconnected or turned off. 110 This routine sometimes fails for Layla20; for Layla20, the loop runs 111 5 times and succeeds if it wins on three of the loops. */ 112 static int check_asic_status(struct echoaudio *chip) 113 { 114 u32 asic_status; 115 int goodcnt, i; 116 117 chip->asic_loaded = FALSE; 118 for (i = goodcnt = 0; i < 5; i++) { 119 send_vector(chip, DSP_VC_TEST_ASIC); 120 121 /* The DSP will return a value to indicate whether or not 122 the ASIC is currently loaded */ 123 if (read_dsp(chip, &asic_status) < 0) { 124 DE_ACT(("check_asic_status: failed on read_dsp\n")); 125 return -EIO; 126 } 127 128 if (asic_status == ASIC_ALREADY_LOADED) { 129 if (++goodcnt == 3) { 130 chip->asic_loaded = TRUE; 131 return 0; 132 } 133 } 134 } 135 return -EIO; 136 } 137 138 139 140 /* Layla20 has an ASIC in the external box */ 141 static int load_asic(struct echoaudio *chip) 142 { 143 int err; 144 145 if (chip->asic_loaded) 146 return 0; 147 148 err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC, 149 FW_LAYLA20_ASIC); 150 if (err < 0) 151 return err; 152 153 /* Check if ASIC is alive and well. */ 154 return check_asic_status(chip); 155 } 156 157 158 159 static int set_sample_rate(struct echoaudio *chip, u32 rate) 160 { 161 if (snd_BUG_ON(rate < 8000 || rate > 50000)) 162 return -EINVAL; 163 164 /* Only set the clock for internal mode. Do not return failure, 165 simply treat it as a non-event. */ 166 if (chip->input_clock != ECHO_CLOCK_INTERNAL) { 167 DE_ACT(("set_sample_rate: Cannot set sample rate - " 168 "clock not set to CLK_CLOCKININTERNAL\n")); 169 chip->comm_page->sample_rate = cpu_to_le32(rate); 170 chip->sample_rate = rate; 171 return 0; 172 } 173 174 if (wait_handshake(chip)) 175 return -EIO; 176 177 DE_ACT(("set_sample_rate(%d)\n", rate)); 178 chip->sample_rate = rate; 179 chip->comm_page->sample_rate = cpu_to_le32(rate); 180 clear_handshake(chip); 181 return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE); 182 } 183 184 185 186 static int set_input_clock(struct echoaudio *chip, u16 clock_source) 187 { 188 u16 clock; 189 u32 rate; 190 191 DE_ACT(("set_input_clock:\n")); 192 rate = 0; 193 switch (clock_source) { 194 case ECHO_CLOCK_INTERNAL: 195 DE_ACT(("Set Layla20 clock to INTERNAL\n")); 196 rate = chip->sample_rate; 197 clock = LAYLA20_CLOCK_INTERNAL; 198 break; 199 case ECHO_CLOCK_SPDIF: 200 DE_ACT(("Set Layla20 clock to SPDIF\n")); 201 clock = LAYLA20_CLOCK_SPDIF; 202 break; 203 case ECHO_CLOCK_WORD: 204 DE_ACT(("Set Layla20 clock to WORD\n")); 205 clock = LAYLA20_CLOCK_WORD; 206 break; 207 case ECHO_CLOCK_SUPER: 208 DE_ACT(("Set Layla20 clock to SUPER\n")); 209 clock = LAYLA20_CLOCK_SUPER; 210 break; 211 default: 212 DE_ACT(("Input clock 0x%x not supported for Layla24\n", 213 clock_source)); 214 return -EINVAL; 215 } 216 chip->input_clock = clock_source; 217 218 chip->comm_page->input_clock = cpu_to_le16(clock); 219 clear_handshake(chip); 220 send_vector(chip, DSP_VC_UPDATE_CLOCKS); 221 222 if (rate) 223 set_sample_rate(chip, rate); 224 225 return 0; 226 } 227 228 229 230 static int set_output_clock(struct echoaudio *chip, u16 clock) 231 { 232 DE_ACT(("set_output_clock: %d\n", clock)); 233 switch (clock) { 234 case ECHO_CLOCK_SUPER: 235 clock = LAYLA20_OUTPUT_CLOCK_SUPER; 236 break; 237 case ECHO_CLOCK_WORD: 238 clock = LAYLA20_OUTPUT_CLOCK_WORD; 239 break; 240 default: 241 DE_ACT(("set_output_clock wrong clock\n")); 242 return -EINVAL; 243 } 244 245 if (wait_handshake(chip)) 246 return -EIO; 247 248 chip->comm_page->output_clock = cpu_to_le16(clock); 249 chip->output_clock = clock; 250 clear_handshake(chip); 251 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 252 } 253 254 255 256 /* Set input bus gain (one unit is 0.5dB !) */ 257 static int set_input_gain(struct echoaudio *chip, u16 input, int gain) 258 { 259 if (snd_BUG_ON(input >= num_busses_in(chip))) 260 return -EINVAL; 261 262 if (wait_handshake(chip)) 263 return -EIO; 264 265 chip->input_gain[input] = gain; 266 gain += GL20_INPUT_GAIN_MAGIC_NUMBER; 267 chip->comm_page->line_in_level[input] = gain; 268 return 0; 269 } 270 271 272 273 /* Tell the DSP to reread the flags from the comm page */ 274 static int update_flags(struct echoaudio *chip) 275 { 276 if (wait_handshake(chip)) 277 return -EIO; 278 clear_handshake(chip); 279 return send_vector(chip, DSP_VC_UPDATE_FLAGS); 280 } 281 282 283 284 static int set_professional_spdif(struct echoaudio *chip, char prof) 285 { 286 DE_ACT(("set_professional_spdif %d\n", prof)); 287 if (prof) 288 chip->comm_page->flags |= 289 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 290 else 291 chip->comm_page->flags &= 292 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 293 chip->professional_spdif = prof; 294 return update_flags(chip); 295 } 296