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\n")); 42 if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO)) 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_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 Indigo 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 u32 control_reg; 102 103 switch (rate) { 104 case 96000: 105 control_reg = MIA_96000; 106 break; 107 case 88200: 108 control_reg = MIA_88200; 109 break; 110 case 48000: 111 control_reg = MIA_48000; 112 break; 113 case 44100: 114 control_reg = MIA_44100; 115 break; 116 case 32000: 117 control_reg = MIA_32000; 118 break; 119 default: 120 DE_ACT(("set_sample_rate: %d invalid!\n", rate)); 121 return -EINVAL; 122 } 123 124 /* Set the control register if it has changed */ 125 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 126 if (wait_handshake(chip)) 127 return -EIO; 128 129 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 130 chip->comm_page->control_register = cpu_to_le32(control_reg); 131 chip->sample_rate = rate; 132 133 clear_handshake(chip); 134 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 135 } 136 return 0; 137 } 138 139 140 141 /* This function routes the sound from a virtual channel to a real output */ 142 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 143 int gain) 144 { 145 int index; 146 147 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 148 output >= num_busses_out(chip))) 149 return -EINVAL; 150 151 if (wait_handshake(chip)) 152 return -EIO; 153 154 chip->vmixer_gain[output][pipe] = gain; 155 index = output * num_pipes_out(chip) + pipe; 156 chip->comm_page->vmixer[index] = gain; 157 158 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 159 return 0; 160 } 161 162 163 164 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 165 static int update_vmixer_level(struct echoaudio *chip) 166 { 167 if (wait_handshake(chip)) 168 return -EIO; 169 clear_handshake(chip); 170 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 171 } 172 173