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 if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20)) 42 return -ENODEV; 43 44 if ((err = init_dsp_comm_page(chip))) { 45 DE_INIT(("init_hw - could not initialize DSP comm page\n")); 46 return err; 47 } 48 49 chip->device_id = device_id; 50 chip->subdevice_id = subdevice_id; 51 chip->bad_board = TRUE; 52 chip->dsp_code_to_load = &card_fw[FW_GINA20_DSP]; 53 chip->spdif_status = GD_SPDIF_STATUS_UNDEF; 54 chip->clock_state = GD_CLOCK_UNDEF; 55 /* Since this card has no ASIC, mark it as loaded so everything 56 works OK */ 57 chip->asic_loaded = TRUE; 58 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | 59 ECHO_CLOCK_BIT_SPDIF; 60 61 if ((err = load_firmware(chip)) < 0) 62 return err; 63 chip->bad_board = FALSE; 64 65 if ((err = init_line_levels(chip)) < 0) 66 return err; 67 68 err = set_professional_spdif(chip, TRUE); 69 70 DE_INIT(("init_hw done\n")); 71 return err; 72 } 73 74 75 76 static u32 detect_input_clocks(const struct echoaudio *chip) 77 { 78 u32 clocks_from_dsp, clock_bits; 79 80 /* Map the DSP clock detect bits to the generic driver clock 81 detect bits */ 82 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 83 84 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 85 86 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) 87 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 88 89 return clock_bits; 90 } 91 92 93 94 /* The Gina20 has no ASIC. Just do nothing */ 95 static int load_asic(struct echoaudio *chip) 96 { 97 return 0; 98 } 99 100 101 102 static int set_sample_rate(struct echoaudio *chip, u32 rate) 103 { 104 u8 clock_state, spdif_status; 105 106 if (wait_handshake(chip)) 107 return -EIO; 108 109 switch (rate) { 110 case 44100: 111 clock_state = GD_CLOCK_44; 112 spdif_status = GD_SPDIF_STATUS_44; 113 break; 114 case 48000: 115 clock_state = GD_CLOCK_48; 116 spdif_status = GD_SPDIF_STATUS_48; 117 break; 118 default: 119 clock_state = GD_CLOCK_NOCHANGE; 120 spdif_status = GD_SPDIF_STATUS_NOCHANGE; 121 break; 122 } 123 124 if (chip->clock_state == clock_state) 125 clock_state = GD_CLOCK_NOCHANGE; 126 if (spdif_status == chip->spdif_status) 127 spdif_status = GD_SPDIF_STATUS_NOCHANGE; 128 129 chip->comm_page->sample_rate = cpu_to_le32(rate); 130 chip->comm_page->gd_clock_state = clock_state; 131 chip->comm_page->gd_spdif_status = spdif_status; 132 chip->comm_page->gd_resampler_state = 3; /* magic number - should always be 3 */ 133 134 /* Save the new audio state if it changed */ 135 if (clock_state != GD_CLOCK_NOCHANGE) 136 chip->clock_state = clock_state; 137 if (spdif_status != GD_SPDIF_STATUS_NOCHANGE) 138 chip->spdif_status = spdif_status; 139 chip->sample_rate = rate; 140 141 clear_handshake(chip); 142 return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); 143 } 144 145 146 147 static int set_input_clock(struct echoaudio *chip, u16 clock) 148 { 149 DE_ACT(("set_input_clock:\n")); 150 151 switch (clock) { 152 case ECHO_CLOCK_INTERNAL: 153 /* Reset the audio state to unknown (just in case) */ 154 chip->clock_state = GD_CLOCK_UNDEF; 155 chip->spdif_status = GD_SPDIF_STATUS_UNDEF; 156 set_sample_rate(chip, chip->sample_rate); 157 chip->input_clock = clock; 158 DE_ACT(("Set Gina clock to INTERNAL\n")); 159 break; 160 case ECHO_CLOCK_SPDIF: 161 chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN; 162 chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE; 163 clear_handshake(chip); 164 send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); 165 chip->clock_state = GD_CLOCK_SPDIFIN; 166 DE_ACT(("Set Gina20 clock to SPDIF\n")); 167 chip->input_clock = clock; 168 break; 169 default: 170 return -EINVAL; 171 } 172 173 return 0; 174 } 175 176 177 178 /* Set input bus gain (one unit is 0.5dB !) */ 179 static int set_input_gain(struct echoaudio *chip, u16 input, int gain) 180 { 181 if (snd_BUG_ON(input >= num_busses_in(chip))) 182 return -EINVAL; 183 184 if (wait_handshake(chip)) 185 return -EIO; 186 187 chip->input_gain[input] = gain; 188 gain += GL20_INPUT_GAIN_MAGIC_NUMBER; 189 chip->comm_page->line_in_level[input] = gain; 190 return 0; 191 } 192 193 194 195 /* Tell the DSP to reread the flags from the comm page */ 196 static int update_flags(struct echoaudio *chip) 197 { 198 if (wait_handshake(chip)) 199 return -EIO; 200 clear_handshake(chip); 201 return send_vector(chip, DSP_VC_UPDATE_FLAGS); 202 } 203 204 205 206 static int set_professional_spdif(struct echoaudio *chip, char prof) 207 { 208 DE_ACT(("set_professional_spdif %d\n", prof)); 209 if (prof) 210 chip->comm_page->flags |= 211 __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 212 else 213 chip->comm_page->flags &= 214 ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 215 chip->professional_spdif = prof; 216 return update_flags(chip); 217 } 218