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 32static int set_input_clock(struct echoaudio *chip, u16 clock); 33static int set_professional_spdif(struct echoaudio *chip, char prof); 34static int update_flags(struct echoaudio *chip); 35static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 36 int gain); 37static int update_vmixer_level(struct echoaudio *chip); 38 39 40static 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 = 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 DE_INIT(("init_hw done\n")); 70 return err; 71} 72 73 74 75static int set_mixer_defaults(struct echoaudio *chip) 76{ 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 87 detect bits */ 88 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 89 90 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 91 92 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) 93 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 94 95 return clock_bits; 96} 97 98 99 100/* The Mia has no ASIC. Just do nothing */ 101static int load_asic(struct echoaudio *chip) 102{ 103 return 0; 104} 105 106 107 108static int set_sample_rate(struct echoaudio *chip, u32 rate) 109{ 110 u32 control_reg; 111 112 switch (rate) { 113 case 96000: 114 control_reg = MIA_96000; 115 break; 116 case 88200: 117 control_reg = MIA_88200; 118 break; 119 case 48000: 120 control_reg = MIA_48000; 121 break; 122 case 44100: 123 control_reg = MIA_44100; 124 break; 125 case 32000: 126 control_reg = MIA_32000; 127 break; 128 default: 129 DE_ACT(("set_sample_rate: %d invalid!\n", rate)); 130 return -EINVAL; 131 } 132 133 /* Override the clock setting if this Mia is set to S/PDIF clock */ 134 if (chip->input_clock == ECHO_CLOCK_SPDIF) 135 control_reg |= MIA_SPDIF; 136 137 /* Set the control register if it has changed */ 138 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 139 if (wait_handshake(chip)) 140 return -EIO; 141 142 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 143 chip->comm_page->control_register = cpu_to_le32(control_reg); 144 chip->sample_rate = rate; 145 146 clear_handshake(chip); 147 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 148 } 149 return 0; 150} 151 152 153 154static int set_input_clock(struct echoaudio *chip, u16 clock) 155{ 156 DE_ACT(("set_input_clock(%d)\n", clock)); 157 if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && 158 clock != ECHO_CLOCK_SPDIF)) 159 return -EINVAL; 160 161 chip->input_clock = clock; 162 return set_sample_rate(chip, chip->sample_rate); 163} 164 165 166 167/* This function routes the sound from a virtual channel to a real output */ 168static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 169 int gain) 170{ 171 int index; 172 173 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 174 output >= num_busses_out(chip))) 175 return -EINVAL; 176 177 if (wait_handshake(chip)) 178 return -EIO; 179 180 chip->vmixer_gain[output][pipe] = gain; 181 index = output * num_pipes_out(chip) + pipe; 182 chip->comm_page->vmixer[index] = gain; 183 184 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 185 return 0; 186} 187 188 189 190/* Tell the DSP to read and update virtual mixer levels in comm page. */ 191static int update_vmixer_level(struct echoaudio *chip) 192{ 193 if (wait_handshake(chip)) 194 return -EIO; 195 clear_handshake(chip); 196 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 197} 198 199 200 201/* Tell the DSP to reread the flags from the comm page */ 202static int update_flags(struct echoaudio *chip) 203{ 204 if (wait_handshake(chip)) 205 return -EIO; 206 clear_handshake(chip); 207 return send_vector(chip, DSP_VC_UPDATE_FLAGS); 208} 209 210 211 212static int set_professional_spdif(struct echoaudio *chip, char prof) 213{ 214 DE_ACT(("set_professional_spdif %d\n", prof)); 215 if (prof) 216 chip->comm_page->flags |= 217 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 218 else 219 chip->comm_page->flags &= 220 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 221 chip->professional_spdif = prof; 222 return update_flags(chip); 223} 224