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_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 33 int gain); 34 static int update_vmixer_level(struct echoaudio *chip); 35 36 37 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) 38 { 39 int err; 40 41 if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO)) 42 return -ENODEV; 43 44 if ((err = init_dsp_comm_page(chip))) { 45 dev_err(chip->card->dev, 46 "init_hw - could not initialize DSP comm page\n"); 47 return err; 48 } 49 50 chip->device_id = device_id; 51 chip->subdevice_id = subdevice_id; 52 chip->bad_board = TRUE; 53 chip->dsp_code_to_load = FW_INDIGO_DSP; 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 59 if ((err = load_firmware(chip)) < 0) 60 return err; 61 chip->bad_board = FALSE; 62 63 return err; 64 } 65 66 67 68 static int set_mixer_defaults(struct echoaudio *chip) 69 { 70 return init_line_levels(chip); 71 } 72 73 74 75 static u32 detect_input_clocks(const struct echoaudio *chip) 76 { 77 return ECHO_CLOCK_BIT_INTERNAL; 78 } 79 80 81 82 /* The Indigo has no ASIC. Just do nothing */ 83 static int load_asic(struct echoaudio *chip) 84 { 85 return 0; 86 } 87 88 89 90 static int set_sample_rate(struct echoaudio *chip, u32 rate) 91 { 92 u32 control_reg; 93 94 switch (rate) { 95 case 96000: 96 control_reg = MIA_96000; 97 break; 98 case 88200: 99 control_reg = MIA_88200; 100 break; 101 case 48000: 102 control_reg = MIA_48000; 103 break; 104 case 44100: 105 control_reg = MIA_44100; 106 break; 107 case 32000: 108 control_reg = MIA_32000; 109 break; 110 default: 111 dev_err(chip->card->dev, 112 "set_sample_rate: %d invalid!\n", rate); 113 return -EINVAL; 114 } 115 116 /* Set the control register if it has changed */ 117 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 118 if (wait_handshake(chip)) 119 return -EIO; 120 121 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 122 chip->comm_page->control_register = cpu_to_le32(control_reg); 123 chip->sample_rate = rate; 124 125 clear_handshake(chip); 126 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 127 } 128 return 0; 129 } 130 131 132 133 /* This function routes the sound from a virtual channel to a real output */ 134 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 135 int gain) 136 { 137 int index; 138 139 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 140 output >= num_busses_out(chip))) 141 return -EINVAL; 142 143 if (wait_handshake(chip)) 144 return -EIO; 145 146 chip->vmixer_gain[output][pipe] = gain; 147 index = output * num_pipes_out(chip) + pipe; 148 chip->comm_page->vmixer[index] = gain; 149 150 dev_dbg(chip->card->dev, 151 "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain); 152 return 0; 153 } 154 155 156 157 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 158 static int update_vmixer_level(struct echoaudio *chip) 159 { 160 if (wait_handshake(chip)) 161 return -EIO; 162 clear_handshake(chip); 163 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 164 } 165 166