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 DE_INIT(("init_hw done\n")); 67 return err; 68 } 69 70 71 72 static u32 detect_input_clocks(const struct echoaudio *chip) 73 { 74 return ECHO_CLOCK_BIT_INTERNAL; 75 } 76 77 78 79 /* The Indigo has no ASIC. Just do nothing */ 80 static int load_asic(struct echoaudio *chip) 81 { 82 return 0; 83 } 84 85 86 87 static int set_sample_rate(struct echoaudio *chip, u32 rate) 88 { 89 u32 control_reg; 90 91 switch (rate) { 92 case 96000: 93 control_reg = MIA_96000; 94 break; 95 case 88200: 96 control_reg = MIA_88200; 97 break; 98 case 48000: 99 control_reg = MIA_48000; 100 break; 101 case 44100: 102 control_reg = MIA_44100; 103 break; 104 case 32000: 105 control_reg = MIA_32000; 106 break; 107 default: 108 DE_ACT(("set_sample_rate: %d invalid!\n", rate)); 109 return -EINVAL; 110 } 111 112 /* Set the control register if it has changed */ 113 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { 114 if (wait_handshake(chip)) 115 return -EIO; 116 117 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ 118 chip->comm_page->control_register = cpu_to_le32(control_reg); 119 chip->sample_rate = rate; 120 121 clear_handshake(chip); 122 return send_vector(chip, DSP_VC_UPDATE_CLOCKS); 123 } 124 return 0; 125 } 126 127 128 129 /* This function routes the sound from a virtual channel to a real output */ 130 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, 131 int gain) 132 { 133 int index; 134 135 if (snd_BUG_ON(pipe >= num_pipes_out(chip) || 136 output >= num_busses_out(chip))) 137 return -EINVAL; 138 139 if (wait_handshake(chip)) 140 return -EIO; 141 142 chip->vmixer_gain[output][pipe] = gain; 143 index = output * num_pipes_out(chip) + pipe; 144 chip->comm_page->vmixer[index] = gain; 145 146 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); 147 return 0; 148 } 149 150 151 152 /* Tell the DSP to read and update virtual mixer levels in comm page. */ 153 static int update_vmixer_level(struct echoaudio *chip) 154 { 155 if (wait_handshake(chip)) 156 return -EIO; 157 clear_handshake(chip); 158 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); 159 } 160 161