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1/****************************************************************************2 3 Copyright Echo Digital Audio Corporation (c) 1998 - 20044 All rights reserved5 www.echoaudio.com6 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 of11 the GNU General Public License as published by the Free Software12 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 of16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the17 GNU General Public License for more details.18 19 You should have received a copy of the GNU General Public License20 along with this program; if not, write to the Free Software21 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-Driver27 were made by Giuliano Pochini <pochini@shiny.it>28 29****************************************************************************/30 31 32static int read_dsp(struct echoaudio *chip, u32 *data);33static int set_professional_spdif(struct echoaudio *chip, char prof);34static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic);35static int check_asic_status(struct echoaudio *chip);36static int update_flags(struct echoaudio *chip);37 38 39static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)40{41 int err;42 43 if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA20))44 return -ENODEV;45 46 err = init_dsp_comm_page(chip);47 if (err) {48 dev_err(chip->card->dev,49 "init_hw - could not initialize DSP comm page\n");50 return err;51 }52 53 chip->device_id = device_id;54 chip->subdevice_id = subdevice_id;55 chip->bad_board = true;56 chip->has_midi = true;57 chip->dsp_code_to_load = FW_LAYLA20_DSP;58 chip->input_clock_types =59 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |60 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;61 chip->output_clock_types =62 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;63 64 err = load_firmware(chip);65 if (err < 0)66 return err;67 chip->bad_board = false;68 69 return err;70}71 72 73 74static int set_mixer_defaults(struct echoaudio *chip)75{76 chip->professional_spdif = false;77 return init_line_levels(chip);78}79 80 81 82static u32 detect_input_clocks(const struct echoaudio *chip)83{84 u32 clocks_from_dsp, clock_bits;85 86 /* Map the DSP clock detect bits to the generic driver clock detect bits */87 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);88 89 clock_bits = ECHO_CLOCK_BIT_INTERNAL;90 91 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)92 clock_bits |= ECHO_CLOCK_BIT_SPDIF;93 94 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {95 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)96 clock_bits |= ECHO_CLOCK_BIT_SUPER;97 else98 clock_bits |= ECHO_CLOCK_BIT_WORD;99 }100 101 return clock_bits;102}103 104 105 106/* ASIC status check - some cards have one or two ASICs that need to be107loaded. Once that load is complete, this function is called to see if108the load was successful.109If this load fails, it does not necessarily mean that the hardware is110defective - the external box may be disconnected or turned off.111This routine sometimes fails for Layla20; for Layla20, the loop runs1125 times and succeeds if it wins on three of the loops. */113static int check_asic_status(struct echoaudio *chip)114{115 u32 asic_status;116 int goodcnt, i;117 118 chip->asic_loaded = false;119 for (i = goodcnt = 0; i < 5; i++) {120 send_vector(chip, DSP_VC_TEST_ASIC);121 122 /* The DSP will return a value to indicate whether or not123 the ASIC is currently loaded */124 if (read_dsp(chip, &asic_status) < 0) {125 dev_err(chip->card->dev,126 "check_asic_status: failed on read_dsp\n");127 return -EIO;128 }129 130 if (asic_status == ASIC_ALREADY_LOADED) {131 if (++goodcnt == 3) {132 chip->asic_loaded = true;133 return 0;134 }135 }136 }137 return -EIO;138}139 140 141 142/* Layla20 has an ASIC in the external box */143static int load_asic(struct echoaudio *chip)144{145 int err;146 147 if (chip->asic_loaded)148 return 0;149 150 err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC,151 FW_LAYLA20_ASIC);152 if (err < 0)153 return err;154 155 /* Check if ASIC is alive and well. */156 return check_asic_status(chip);157}158 159 160 161static int set_sample_rate(struct echoaudio *chip, u32 rate)162{163 if (snd_BUG_ON(rate < 8000 || rate > 50000))164 return -EINVAL;165 166 /* Only set the clock for internal mode. Do not return failure,167 simply treat it as a non-event. */168 if (chip->input_clock != ECHO_CLOCK_INTERNAL) {169 dev_warn(chip->card->dev,170 "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");171 chip->comm_page->sample_rate = cpu_to_le32(rate);172 chip->sample_rate = rate;173 return 0;174 }175 176 if (wait_handshake(chip))177 return -EIO;178 179 dev_dbg(chip->card->dev, "set_sample_rate(%d)\n", rate);180 chip->sample_rate = rate;181 chip->comm_page->sample_rate = cpu_to_le32(rate);182 clear_handshake(chip);183 return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE);184}185 186 187 188static int set_input_clock(struct echoaudio *chip, u16 clock_source)189{190 u16 clock;191 u32 rate;192 193 rate = 0;194 switch (clock_source) {195 case ECHO_CLOCK_INTERNAL:196 rate = chip->sample_rate;197 clock = LAYLA20_CLOCK_INTERNAL;198 break;199 case ECHO_CLOCK_SPDIF:200 clock = LAYLA20_CLOCK_SPDIF;201 break;202 case ECHO_CLOCK_WORD:203 clock = LAYLA20_CLOCK_WORD;204 break;205 case ECHO_CLOCK_SUPER:206 clock = LAYLA20_CLOCK_SUPER;207 break;208 default:209 dev_err(chip->card->dev,210 "Input clock 0x%x not supported for Layla24\n",211 clock_source);212 return -EINVAL;213 }214 chip->input_clock = clock_source;215 216 chip->comm_page->input_clock = cpu_to_le16(clock);217 clear_handshake(chip);218 send_vector(chip, DSP_VC_UPDATE_CLOCKS);219 220 if (rate)221 set_sample_rate(chip, rate);222 223 return 0;224}225 226 227 228static int set_output_clock(struct echoaudio *chip, u16 clock)229{230 switch (clock) {231 case ECHO_CLOCK_SUPER:232 clock = LAYLA20_OUTPUT_CLOCK_SUPER;233 break;234 case ECHO_CLOCK_WORD:235 clock = LAYLA20_OUTPUT_CLOCK_WORD;236 break;237 default:238 dev_err(chip->card->dev, "set_output_clock wrong clock\n");239 return -EINVAL;240 }241 242 if (wait_handshake(chip))243 return -EIO;244 245 chip->comm_page->output_clock = cpu_to_le16(clock);246 chip->output_clock = clock;247 clear_handshake(chip);248 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);249}250 251 252 253/* Set input bus gain (one unit is 0.5dB !) */254static int set_input_gain(struct echoaudio *chip, u16 input, int gain)255{256 if (snd_BUG_ON(input >= num_busses_in(chip)))257 return -EINVAL;258 259 if (wait_handshake(chip))260 return -EIO;261 262 chip->input_gain[input] = gain;263 gain += GL20_INPUT_GAIN_MAGIC_NUMBER;264 chip->comm_page->line_in_level[input] = gain;265 return 0;266}267 268 269 270/* Tell the DSP to reread the flags from the comm page */271static int update_flags(struct echoaudio *chip)272{273 if (wait_handshake(chip))274 return -EIO;275 clear_handshake(chip);276 return send_vector(chip, DSP_VC_UPDATE_FLAGS);277}278 279 280 281static int set_professional_spdif(struct echoaudio *chip, char prof)282{283 if (prof)284 chip->comm_page->flags |=285 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);286 else287 chip->comm_page->flags &=288 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);289 chip->professional_spdif = prof;290 return update_flags(chip);291}292