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 snd_assert((subdevice_id & 0xfff0) == INDIGO, return -ENODEV); 43 44 if ((err = init_dsp_comm_page(chip))) { 45 DE_INIT(("init_hw - could not initialize DSP comm page\n")); 46 return err; 47 } 48 49 chip->device_id = device_id; 50 chip->subdevice_id = subdevice_id; 51 chip->bad_board = TRUE; 52 chip->dsp_code_to_load = &card_fw[FW_INDIGO_DSP]; 53 /* Since this card has no ASIC, mark it as loaded so everything 54 works OK */ 55 chip->asic_loaded = TRUE; 56 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL; 57 58 if ((err = load_firmware(chip)) < 0) 59 return err; 60 chip->bad_board = FALSE; 61 62 if ((err = init_line_levels(chip)) < 0) 63 return err; 64 65 /* Default routing of the virtual channels: all vchannels are routed 66 to the stereo output */ 67 set_vmixer_gain(chip, 0, 0, 0); 68 set_vmixer_gain(chip, 1, 1, 0); 69 set_vmixer_gain(chip, 0, 2, 0); 70 set_vmixer_gain(chip, 1, 3, 0); 71 set_vmixer_gain(chip, 0, 4, 0); 72 set_vmixer_gain(chip, 1, 5, 0); 73 set_vmixer_gain(chip, 0, 6, 0); 74 set_vmixer_gain(chip, 1, 7, 0); 75 err = update_vmixer_level(chip); 76 77 DE_INIT(("init_hw done\n")); 78 return err; 79 } 80 81 82 83 static u32 detect_input_clocks(const struct echoaudio *chip) 84 { 85 return ECHO_CLOCK_BIT_INTERNAL; 86 } 87 88 89 90 /* The Indigo has no ASIC. Just do nothing */ 91 static int load_asic(struct echoaudio *chip) 92 { 93 return 0; 94 } 95 96 97 98 static int set_sample_rate(struct echoaudio *chip, u32 rate) 99 { 100 u32 control_reg; 101 102 switch (rate) { 103 case 96000: 104 control_reg = MIA_96000; 105 break; 106 case 88200: 107 control_reg = MIA_88200; 108 break; 109 case 48000: 110 control_reg = MIA_48000; 111 break; 112 case 44100: 113 control_reg = MIA_44100; 114 break; 115 case 32000: 116 control_reg = MIA_32000; 117 break; 118 default: 119 DE_ACT(("set_sample_rate: %d invalid!\n", rate)); 120 return -EINVAL; 121 } 122 123 /* Set the control register if it has changed */ 124 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 125 if (wait_handshake(chip)) 126 return -EIO; 127 128 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 129 chip->comm_page->control_register = cpu_to_le32(control_reg); 130 chip->sample_rate = rate; 131 132 clear_handshake(chip); 133 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 134 } 135 return 0; 136 } 137 138 139 140 /* This function routes the sound from a virtual channel to a real output */ 141 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 142 int gain) 143 { 144 int index; 145 146 snd_assert(pipe < num_pipes_out(chip) && 147 output < num_busses_out(chip), return -EINVAL); 148 149 if (wait_handshake(chip)) 150 return -EIO; 151 152 chip->vmixer_gain[output][pipe] = gain; 153 index = output * num_pipes_out(chip) + pipe; 154 chip->comm_page->vmixer[index] = gain; 155 156 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 157 return 0; 158 } 159 160 161 162 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 163 static int update_vmixer_level(struct echoaudio *chip) 164 { 165 if (wait_handshake(chip)) 166 return -EIO; 167 clear_handshake(chip); 168 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 169 } 170 171