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 DE_INIT(("init_hw() - Indigo IO\n")); 42 if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO)) 43 return -ENODEV; 44 45 if ((err = init_dsp_comm_page(chip))) { 46 DE_INIT(("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 = &card_fw[FW_INDIGO_IO_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 if ((err = init_line_levels(chip)) < 0) 64 return err; 65 66 /* Default routing of the virtual channels: all vchannels are routed 67 to the stereo output */ 68 set_vmixer_gain(chip, 0, 0, 0); 69 set_vmixer_gain(chip, 1, 1, 0); 70 set_vmixer_gain(chip, 0, 2, 0); 71 set_vmixer_gain(chip, 1, 3, 0); 72 set_vmixer_gain(chip, 0, 4, 0); 73 set_vmixer_gain(chip, 1, 5, 0); 74 set_vmixer_gain(chip, 0, 6, 0); 75 set_vmixer_gain(chip, 1, 7, 0); 76 err = update_vmixer_level(chip); 77 78 DE_INIT(("init_hw done\n")); 79 return err; 80 } 81 82 83 84 static u32 detect_input_clocks(const struct echoaudio *chip) 85 { 86 return ECHO_CLOCK_BIT_INTERNAL; 87 } 88 89 90 91 /* The IndigoIO has no ASIC. Just do nothing */ 92 static int load_asic(struct echoaudio *chip) 93 { 94 return 0; 95 } 96 97 98 99 static int set_sample_rate(struct echoaudio *chip, u32 rate) 100 { 101 if (wait_handshake(chip)) 102 return -EIO; 103 104 chip->sample_rate = rate; 105 chip->comm_page->sample_rate = cpu_to_le32(rate); 106 clear_handshake(chip); 107 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 108 } 109 110 111 112 /* This function routes the sound from a virtual channel to a real output */ 113 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 114 int gain) 115 { 116 int index; 117 118 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 119 output >= num_busses_out(chip))) 120 return -EINVAL; 121 122 if (wait_handshake(chip)) 123 return -EIO; 124 125 chip->vmixer_gain[output][pipe] = gain; 126 index = output * num_pipes_out(chip) + pipe; 127 chip->comm_page->vmixer[index] = gain; 128 129 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 130 return 0; 131 } 132 133 134 135 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 136 static int update_vmixer_level(struct echoaudio *chip) 137 { 138 if (wait_handshake(chip)) 139 return -EIO; 140 clear_handshake(chip); 141 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 142 } 143 144