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_input_clock(struct echoaudio *chip, u16 clock);
33 static int set_professional_spdif(struct echoaudio *chip, char prof);
34 static int update_flags(struct echoaudio *chip);
35 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
37 static int update_vmixer_level(struct echoaudio *chip);
40 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
44 DE_INIT(("init_hw() - Mia\n"));
45 if (snd_BUG_ON((subdevice_id & 0xfff0) != MIA))
48 if ((err = init_dsp_comm_page(chip))) {
49 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
53 chip->device_id = device_id;
54 chip->subdevice_id = subdevice_id;
55 chip->bad_board = TRUE;
56 chip->dsp_code_to_load = &card_fw[FW_MIA_DSP];
57 /* Since this card has no ASIC, mark it as loaded so everything
59 chip->asic_loaded = TRUE;
60 if ((subdevice_id & 0x0000f) == MIA_MIDI_REV)
61 chip->has_midi = TRUE;
62 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
65 if ((err = load_firmware(chip)) < 0)
67 chip->bad_board = FALSE;
69 if ((err = init_line_levels(chip)))
72 /* Default routing of the virtual channels: vchannels 0-3 go to analog
73 outputs and vchannels 4-7 go to S/PDIF outputs */
74 set_vmixer_gain(chip, 0, 0, 0);
75 set_vmixer_gain(chip, 1, 1, 0);
76 set_vmixer_gain(chip, 0, 2, 0);
77 set_vmixer_gain(chip, 1, 3, 0);
78 set_vmixer_gain(chip, 2, 4, 0);
79 set_vmixer_gain(chip, 3, 5, 0);
80 set_vmixer_gain(chip, 2, 6, 0);
81 set_vmixer_gain(chip, 3, 7, 0);
82 err = update_vmixer_level(chip);
84 DE_INIT(("init_hw done\n"));
90 static u32 detect_input_clocks(const struct echoaudio *chip)
92 u32 clocks_from_dsp, clock_bits;
94 /* Map the DSP clock detect bits to the generic driver clock
96 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
98 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
100 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
101 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
108 /* The Mia has no ASIC. Just do nothing */
109 static int load_asic(struct echoaudio *chip)
116 static int set_sample_rate(struct echoaudio *chip, u32 rate)
122 control_reg = MIA_96000;
125 control_reg = MIA_88200;
128 control_reg = MIA_48000;
131 control_reg = MIA_44100;
134 control_reg = MIA_32000;
137 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
141 /* Override the clock setting if this Mia is set to S/PDIF clock */
142 if (chip->input_clock == ECHO_CLOCK_SPDIF)
143 control_reg |= MIA_SPDIF;
145 /* Set the control register if it has changed */
146 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
147 if (wait_handshake(chip))
150 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
151 chip->comm_page->control_register = cpu_to_le32(control_reg);
152 chip->sample_rate = rate;
154 clear_handshake(chip);
155 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
162 static int set_input_clock(struct echoaudio *chip, u16 clock)
164 DE_ACT(("set_input_clock(%d)\n", clock));
165 if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL &&
166 clock != ECHO_CLOCK_SPDIF))
169 chip->input_clock = clock;
170 return set_sample_rate(chip, chip->sample_rate);
175 /* This function routes the sound from a virtual channel to a real output */
176 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
181 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
182 output >= num_busses_out(chip)))
185 if (wait_handshake(chip))
188 chip->vmixer_gain[output][pipe] = gain;
189 index = output * num_pipes_out(chip) + pipe;
190 chip->comm_page->vmixer[index] = gain;
192 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
198 /* Tell the DSP to read and update virtual mixer levels in comm page. */
199 static int update_vmixer_level(struct echoaudio *chip)
201 if (wait_handshake(chip))
203 clear_handshake(chip);
204 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
209 /* Tell the DSP to reread the flags from the comm page */
210 static int update_flags(struct echoaudio *chip)
212 if (wait_handshake(chip))
214 clear_handshake(chip);
215 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
220 static int set_professional_spdif(struct echoaudio *chip, char prof)
222 DE_ACT(("set_professional_spdif %d\n", prof));
224 chip->comm_page->flags |=
225 __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
227 chip->comm_page->flags &=
228 ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
229 chip->professional_spdif = prof;
230 return update_flags(chip);