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 DE_INIT(("init_hw done\n")); 73 return err; 74 } 75 76 77 78 static u32 detect_input_clocks(const struct echoaudio *chip) 79 { 80 u32 clocks_from_dsp, clock_bits; 81 82 /* Map the DSP clock detect bits to the generic driver clock 83 detect bits */ 84 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 85 86 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 87 88 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) 89 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 90 91 return clock_bits; 92 } 93 94 95 96 /* The Mia has no ASIC. Just do nothing */ 97 static int load_asic(struct echoaudio *chip) 98 { 99 return 0; 100 } 101 102 103 104 static int set_sample_rate(struct echoaudio *chip, u32 rate) 105 { 106 u32 control_reg; 107 108 switch (rate) { 109 case 96000: 110 control_reg = MIA_96000; 111 break; 112 case 88200: 113 control_reg = MIA_88200; 114 break; 115 case 48000: 116 control_reg = MIA_48000; 117 break; 118 case 44100: 119 control_reg = MIA_44100; 120 break; 121 case 32000: 122 control_reg = MIA_32000; 123 break; 124 default: 125 DE_ACT(("set_sample_rate: %d invalid!\n", rate)); 126 return -EINVAL; 127 } 128 129 /* Override the clock setting if this Mia is set to S/PDIF clock */ 130 if (chip->input_clock == ECHO_CLOCK_SPDIF) 131 control_reg |= MIA_SPDIF; 132 133 /* Set the control register if it has changed */ 134 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 135 if (wait_handshake(chip)) 136 return -EIO; 137 138 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 139 chip->comm_page->control_register = cpu_to_le32(control_reg); 140 chip->sample_rate = rate; 141 142 clear_handshake(chip); 143 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 144 } 145 return 0; 146 } 147 148 149 150 static int set_input_clock(struct echoaudio *chip, u16 clock) 151 { 152 DE_ACT(("set_input_clock(%d)\n", clock)); 153 if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && 154 clock != ECHO_CLOCK_SPDIF)) 155 return -EINVAL; 156 157 chip->input_clock = clock; 158 return set_sample_rate(chip, chip->sample_rate); 159 } 160 161 162 163 /* This function routes the sound from a virtual channel to a real output */ 164 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 165 int gain) 166 { 167 int index; 168 169 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 170 output >= num_busses_out(chip))) 171 return -EINVAL; 172 173 if (wait_handshake(chip)) 174 return -EIO; 175 176 chip->vmixer_gain[output][pipe] = gain; 177 index = output * num_pipes_out(chip) + pipe; 178 chip->comm_page->vmixer[index] = gain; 179 180 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 181 return 0; 182 } 183 184 185 186 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 187 static int update_vmixer_level(struct echoaudio *chip) 188 { 189 if (wait_handshake(chip)) 190 return -EIO; 191 clear_handshake(chip); 192 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 193 } 194 195 196 197 /* Tell the DSP to reread the flags from the comm page */ 198 static int update_flags(struct echoaudio *chip) 199 { 200 if (wait_handshake(chip)) 201 return -EIO; 202 clear_handshake(chip); 203 return send_vector(chip, DSP_VC_UPDATE_FLAGS); 204 } 205 206 207 208 static int set_professional_spdif(struct echoaudio *chip, char prof) 209 { 210 DE_ACT(("set_professional_spdif %d\n", prof)); 211 if (prof) 212 chip->comm_page->flags |= 213 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 214 else 215 chip->comm_page->flags &= 216 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); 217 chip->professional_spdif = prof; 218 return update_flags(chip); 219 } 220 221