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 snd_assert((subdevice_id & 0xfff0) == MIA, return -ENODEV);
47 if ((err = init_dsp_comm_page(chip))) {
48 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
52 chip->device_id = device_id;
53 chip->subdevice_id = subdevice_id;
54 chip->bad_board = TRUE;
55 chip->dsp_code_to_load = &card_fw[FW_MIA_DSP];
56 /* Since this card has no ASIC, mark it as loaded so everything
58 chip->asic_loaded = TRUE;
59 if ((subdevice_id & 0x0000f) == MIA_MIDI_REV)
60 chip->has_midi = TRUE;
61 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
64 if ((err = load_firmware(chip)) < 0)
66 chip->bad_board = FALSE;
68 if ((err = init_line_levels(chip)))
71 /* Default routing of the virtual channels: vchannels 0-3 go to analog
72 outputs and vchannels 4-7 go to S/PDIF outputs */
73 set_vmixer_gain(chip, 0, 0, 0);
74 set_vmixer_gain(chip, 1, 1, 0);
75 set_vmixer_gain(chip, 0, 2, 0);
76 set_vmixer_gain(chip, 1, 3, 0);
77 set_vmixer_gain(chip, 2, 4, 0);
78 set_vmixer_gain(chip, 3, 5, 0);
79 set_vmixer_gain(chip, 2, 6, 0);
80 set_vmixer_gain(chip, 3, 7, 0);
81 err = update_vmixer_level(chip);
83 DE_INIT(("init_hw done\n"));
89 static u32 detect_input_clocks(const struct echoaudio *chip)
91 u32 clocks_from_dsp, clock_bits;
93 /* Map the DSP clock detect bits to the generic driver clock
95 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
97 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
99 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
100 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
107 /* The Mia has no ASIC. Just do nothing */
108 static int load_asic(struct echoaudio *chip)
115 static int set_sample_rate(struct echoaudio *chip, u32 rate)
121 control_reg = MIA_96000;
124 control_reg = MIA_88200;
127 control_reg = MIA_48000;
130 control_reg = MIA_44100;
133 control_reg = MIA_32000;
136 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
140 /* Override the clock setting if this Mia is set to S/PDIF clock */
141 if (chip->input_clock == ECHO_CLOCK_SPDIF)
142 control_reg |= MIA_SPDIF;
144 /* Set the control register if it has changed */
145 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
146 if (wait_handshake(chip))
149 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
150 chip->comm_page->control_register = cpu_to_le32(control_reg);
151 chip->sample_rate = rate;
153 clear_handshake(chip);
154 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
161 static int set_input_clock(struct echoaudio *chip, u16 clock)
163 DE_ACT(("set_input_clock(%d)\n", clock));
164 snd_assert(clock == ECHO_CLOCK_INTERNAL || clock == ECHO_CLOCK_SPDIF,
167 chip->input_clock = clock;
168 return set_sample_rate(chip, chip->sample_rate);
173 /* This function routes the sound from a virtual channel to a real output */
174 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
179 snd_assert(pipe < num_pipes_out(chip) &&
180 output < num_busses_out(chip), return -EINVAL);
182 if (wait_handshake(chip))
185 chip->vmixer_gain[output][pipe] = gain;
186 index = output * num_pipes_out(chip) + pipe;
187 chip->comm_page->vmixer[index] = gain;
189 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
195 /* Tell the DSP to read and update virtual mixer levels in comm page. */
196 static int update_vmixer_level(struct echoaudio *chip)
198 if (wait_handshake(chip))
200 clear_handshake(chip);
201 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
206 /* Tell the DSP to reread the flags from the comm page */
207 static int update_flags(struct echoaudio *chip)
209 if (wait_handshake(chip))
211 clear_handshake(chip);
212 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
217 static int set_professional_spdif(struct echoaudio *chip, char prof)
219 DE_ACT(("set_professional_spdif %d\n", prof));
221 chip->comm_page->flags |=
222 __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
224 chip->comm_page->flags &=
225 ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
226 chip->professional_spdif = prof;
227 return update_flags(chip);