1 /****************************************************************************
3 Copyright Echo Digital Audio Corporation (c) 1998 - 2004
7 This file is part of Echo Digital Audio's generic driver library.
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
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.
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,
24 *************************************************************************
26 Translation from C++ and adaptation for use in ALSA-Driver
27 were made by Giuliano Pochini <pochini@shiny.it>
29 ****************************************************************************/
32 static int set_vmixer_gain(struct echoaudio
*chip
, u16 output
, u16 pipe
,
34 static int update_vmixer_level(struct echoaudio
*chip
);
37 static int init_hw(struct echoaudio
*chip
, u16 device_id
, u16 subdevice_id
)
41 if (snd_BUG_ON((subdevice_id
& 0xfff0) != INDIGO_IO
))
44 if ((err
= init_dsp_comm_page(chip
))) {
45 dev_err(chip
->card
->dev
,
46 "init_hw - could not initialize DSP comm page\n");
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_IO_DSP
;
54 /* Since this card has no ASIC, mark it as loaded so everything
56 chip
->asic_loaded
= true;
57 chip
->input_clock_types
= ECHO_CLOCK_BIT_INTERNAL
;
59 if ((err
= load_firmware(chip
)) < 0)
61 chip
->bad_board
= false;
68 static int set_mixer_defaults(struct echoaudio
*chip
)
70 return init_line_levels(chip
);
75 static u32
detect_input_clocks(const struct echoaudio
*chip
)
77 return ECHO_CLOCK_BIT_INTERNAL
;
82 /* The IndigoIO has no ASIC. Just do nothing */
83 static int load_asic(struct echoaudio
*chip
)
90 static int set_sample_rate(struct echoaudio
*chip
, u32 rate
)
92 if (wait_handshake(chip
))
95 chip
->sample_rate
= rate
;
96 chip
->comm_page
->sample_rate
= cpu_to_le32(rate
);
97 clear_handshake(chip
);
98 return send_vector(chip
, DSP_VC_UPDATE_CLOCKS
);
103 /* This function routes the sound from a virtual channel to a real output */
104 static int set_vmixer_gain(struct echoaudio
*chip
, u16 output
, u16 pipe
,
109 if (snd_BUG_ON(pipe
>= num_pipes_out(chip
) ||
110 output
>= num_busses_out(chip
)))
113 if (wait_handshake(chip
))
116 chip
->vmixer_gain
[output
][pipe
] = gain
;
117 index
= output
* num_pipes_out(chip
) + pipe
;
118 chip
->comm_page
->vmixer
[index
] = gain
;
120 dev_dbg(chip
->card
->dev
,
121 "set_vmixer_gain: pipe %d, out %d = %d\n", pipe
, output
, gain
);
127 /* Tell the DSP to read and update virtual mixer levels in comm page. */
128 static int update_vmixer_level(struct echoaudio
*chip
)
130 if (wait_handshake(chip
))
132 clear_handshake(chip
);
133 return send_vector(chip
, DSP_VC_SET_VMIXER_GAIN
);