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 set_professional_spdif(struct echoaudio *chip, char prof); 33 static int update_flags(struct echoaudio *chip); 34 35 36 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) 37 { 38 int err; 39 40 DE_INIT(("init_hw() - Gina20\n")); 41 snd_assert((subdevice_id & 0xfff0) == GINA20, return -ENODEV); 42 43 if ((err = init_dsp_comm_page(chip))) { 44 DE_INIT(("init_hw - could not initialize DSP comm page\n")); 45 return err; 46 } 47 48 chip->device_id = device_id; 49 chip->subdevice_id = subdevice_id; 50 chip->bad_board = TRUE; 51 chip->dsp_code_to_load = &card_fw[FW_GINA20_DSP]; 52 chip->spdif_status = GD_SPDIF_STATUS_UNDEF; 53 chip->clock_state = GD_CLOCK_UNDEF; 54 /* Since this card has no ASIC, mark it as loaded so everything 55 works OK */ 56 chip->asic_loaded = TRUE; 57 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | 58 ECHO_CLOCK_BIT_SPDIF; 59 60 if ((err = load_firmware(chip)) < 0) 61 return err; 62 chip->bad_board = FALSE; 63 64 if ((err = init_line_levels(chip)) < 0) 65 return err; 66 67 err = set_professional_spdif(chip, TRUE); 68 69 DE_INIT(("init_hw done\n")); 70 return err; 71 } 72 73 74 75 static u32 detect_input_clocks(const struct echoaudio *chip) 76 { 77 u32 clocks_from_dsp, clock_bits; 78 79 /* Map the DSP clock detect bits to the generic driver clock 80 detect bits */ 81 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 82 83 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 84 85 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) 86 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 87 88 return clock_bits; 89 } 90 91 92 93 /* The Gina20 has no ASIC. Just do nothing */ 94 static int load_asic(struct echoaudio *chip) 95 { 96 return 0; 97 } 98 99 100 101 static int set_sample_rate(struct echoaudio *chip, u32 rate) 102 { 103 u8 clock_state, spdif_status; 104 105 if (wait_handshake(chip)) 106 return -EIO; 107 108 switch (rate) { 109 case 44100: 110 clock_state = GD_CLOCK_44; 111 spdif_status = GD_SPDIF_STATUS_44; 112 break; 113 case 48000: 114 clock_state = GD_CLOCK_48; 115 spdif_status = GD_SPDIF_STATUS_48; 116 break; 117 default: 118 clock_state = GD_CLOCK_NOCHANGE; 119 spdif_status = GD_SPDIF_STATUS_NOCHANGE; 120 break; 121 } 122 123 if (chip->clock_state == clock_state) 124 clock_state = GD_CLOCK_NOCHANGE; 125 if (spdif_status == chip->spdif_status) 126 spdif_status = GD_SPDIF_STATUS_NOCHANGE; 127 128 chip->comm_page->sample_rate = cpu_to_le32(rate); 129 chip->comm_page->gd_clock_state = clock_state; 130 chip->comm_page->gd_spdif_status = spdif_status; 131 chip->comm_page->gd_resampler_state = 3; /* magic number - should always be 3 */ 132 133 /* Save the new audio state if it changed */ 134 if (clock_state != GD_CLOCK_NOCHANGE) 135 chip->clock_state = clock_state; 136 if (spdif_status != GD_SPDIF_STATUS_NOCHANGE) 137 chip->spdif_status = spdif_status; 138 chip->sample_rate = rate; 139 140 clear_handshake(chip); 141 return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); 142 } 143 144 145 146 static int set_input_clock(struct echoaudio *chip, u16 clock) 147 { 148 DE_ACT(("set_input_clock:\n")); 149 150 switch (clock) { 151 case ECHO_CLOCK_INTERNAL: 152 /* Reset the audio state to unknown (just in case) */ 153 chip->clock_state = GD_CLOCK_UNDEF; 154 chip->spdif_status = GD_SPDIF_STATUS_UNDEF; 155 set_sample_rate(chip, chip->sample_rate); 156 chip->input_clock = clock; 157 DE_ACT(("Set Gina clock to INTERNAL\n")); 158 break; 159 case ECHO_CLOCK_SPDIF: 160 chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN; 161 chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE; 162 clear_handshake(chip); 163 send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); 164 chip->clock_state = GD_CLOCK_SPDIFIN; 165 DE_ACT(("Set Gina20 clock to SPDIF\n")); 166 chip->input_clock = clock; 167 break; 168 default: 169 return -EINVAL; 170 } 171 172 return 0; 173 } 174 175 176 177 /* Set input bus gain (one unit is 0.5dB !) */ 178 static int set_input_gain(struct echoaudio *chip, u16 input, int gain) 179 { 180 snd_assert(input < num_busses_in(chip), return -EINVAL); 181 182 if (wait_handshake(chip)) 183 return -EIO; 184 185 chip->input_gain[input] = gain; 186 gain += GL20_INPUT_GAIN_MAGIC_NUMBER; 187 chip->comm_page->line_in_level[input] = gain; 188 return 0; 189 } 190 191 192 193 /* Tell the DSP to reread the flags from the comm page */ 194 static int update_flags(struct echoaudio *chip) 195 { 196 if (wait_handshake(chip)) 197 return -EIO; 198 clear_handshake(chip); 199 return send_vector(chip, DSP_VC_UPDATE_FLAGS); 200 } 201 202 203 204 static int set_professional_spdif(struct echoaudio *chip, char prof) 205 { 206 DE_ACT(("set_professional_spdif %d\n", prof)); 207 if (prof) 208 chip->comm_page->flags |= 209 __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 210 else 211 chip->comm_page->flags &= 212 ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 213 chip->professional_spdif = prof; 214 return update_flags(chip); 215 } 216