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_input_clock(struct echoaudio *chip, u16 clock); 33 static int set_professional_spdif(struct echoaudio *chip, char prof); 34 static int update_flags(struct echoaudio *chip); 35 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 36 int gain); 37 static int update_vmixer_level(struct echoaudio *chip); 38 39 40 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) 41 { 42 int err; 43 44 DE_INIT(("init_hw() - Mia\n")); 45 if (snd_BUG_ON((subdevice_id & 0xfff0) != MIA)) 46 return -ENODEV; 47 48 if ((err = init_dsp_comm_page(chip))) { 49 DE_INIT(("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->dsp_code_to_load = &card_fw[FW_MIA_DSP]; 57 /* Since this card has no ASIC, mark it as loaded so everything 58 works OK */ 59 chip->asic_loaded = TRUE; 60 if ((subdevice_id & 0x0000f) == MIA_MIDI_REV) 61 chip->has_midi = TRUE; 62 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | 63 ECHO_CLOCK_BIT_SPDIF; 64 65 if ((err = load_firmware(chip)) < 0) 66 return err; 67 chip->bad_board = FALSE; 68 69 if ((err = init_line_levels(chip))) 70 return err; 71 72 /* Default routing of the virtual channels: vchannels 0-3 go to analog 73 outputs and vchannels 4-7 go to S/PDIF outputs */ 74 set_vmixer_gain(chip, 0, 0, 0); 75 set_vmixer_gain(chip, 1, 1, 0); 76 set_vmixer_gain(chip, 0, 2, 0); 77 set_vmixer_gain(chip, 1, 3, 0); 78 set_vmixer_gain(chip, 2, 4, 0); 79 set_vmixer_gain(chip, 3, 5, 0); 80 set_vmixer_gain(chip, 2, 6, 0); 81 set_vmixer_gain(chip, 3, 7, 0); 82 err = update_vmixer_level(chip); 83 84 DE_INIT(("init_hw done\n")); 85 return err; 86 } 87 88 89 90 static u32 detect_input_clocks(const struct echoaudio *chip) 91 { 92 u32 clocks_from_dsp, clock_bits; 93 94 /* Map the DSP clock detect bits to the generic driver clock 95 detect bits */ 96 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 97 98 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 99 100 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) 101 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 102 103 return clock_bits; 104 } 105 106 107 108 /* The Mia has no ASIC. Just do nothing */ 109 static int load_asic(struct echoaudio *chip) 110 { 111 return 0; 112 } 113 114 115 116 static int set_sample_rate(struct echoaudio *chip, u32 rate) 117 { 118 u32 control_reg; 119 120 switch (rate) { 121 case 96000: 122 control_reg = MIA_96000; 123 break; 124 case 88200: 125 control_reg = MIA_88200; 126 break; 127 case 48000: 128 control_reg = MIA_48000; 129 break; 130 case 44100: 131 control_reg = MIA_44100; 132 break; 133 case 32000: 134 control_reg = MIA_32000; 135 break; 136 default: 137 DE_ACT(("set_sample_rate: %d invalid!\n", rate)); 138 return -EINVAL; 139 } 140 141 /* Override the clock setting if this Mia is set to S/PDIF clock */ 142 if (chip->input_clock == ECHO_CLOCK_SPDIF) 143 control_reg |= MIA_SPDIF; 144 145 /* Set the control register if it has changed */ 146 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 147 if (wait_handshake(chip)) 148 return -EIO; 149 150 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 151 chip->comm_page->control_register = cpu_to_le32(control_reg); 152 chip->sample_rate = rate; 153 154 clear_handshake(chip); 155 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 156 } 157 return 0; 158 } 159 160 161 162 static int set_input_clock(struct echoaudio *chip, u16 clock) 163 { 164 DE_ACT(("set_input_clock(%d)\n", clock)); 165 if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && 166 clock != ECHO_CLOCK_SPDIF)) 167 return -EINVAL; 168 169 chip->input_clock = clock; 170 return set_sample_rate(chip, chip->sample_rate); 171 } 172 173 174 175 /* This function routes the sound from a virtual channel to a real output */ 176 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 177 int gain) 178 { 179 int index; 180 181 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 182 output >= num_busses_out(chip))) 183 return -EINVAL; 184 185 if (wait_handshake(chip)) 186 return -EIO; 187 188 chip->vmixer_gain[output][pipe] = gain; 189 index = output * num_pipes_out(chip) + pipe; 190 chip->comm_page->vmixer[index] = gain; 191 192 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 193 return 0; 194 } 195 196 197 198 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 199 static int update_vmixer_level(struct echoaudio *chip) 200 { 201 if (wait_handshake(chip)) 202 return -EIO; 203 clear_handshake(chip); 204 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 205 } 206 207 208 209 /* Tell the DSP to reread the flags from the comm page */ 210 static int update_flags(struct echoaudio *chip) 211 { 212 if (wait_handshake(chip)) 213 return -EIO; 214 clear_handshake(chip); 215 return send_vector(chip, DSP_VC_UPDATE_FLAGS); 216 } 217 218 219 220 static int set_professional_spdif(struct echoaudio *chip, char prof) 221 { 222 DE_ACT(("set_professional_spdif %d\n", prof)); 223 if (prof) 224 chip->comm_page->flags |= 225 __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 226 else 227 chip->comm_page->flags &= 228 ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 229 chip->professional_spdif = prof; 230 return update_flags(chip); 231 } 232 233