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 DE_INIT(("init_hw done\n"));
78 static u32 detect_input_clocks(const struct echoaudio *chip)
80 u32 clocks_from_dsp, clock_bits;
82 /* Map the DSP clock detect bits to the generic driver clock
84 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
86 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
88 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
89 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
96 /* The Mia has no ASIC. Just do nothing */
97 static int load_asic(struct echoaudio *chip)
104 static int set_sample_rate(struct echoaudio *chip, u32 rate)
110 control_reg = MIA_96000;
113 control_reg = MIA_88200;
116 control_reg = MIA_48000;
119 control_reg = MIA_44100;
122 control_reg = MIA_32000;
125 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
129 /* Override the clock setting if this Mia is set to S/PDIF clock */
130 if (chip->input_clock == ECHO_CLOCK_SPDIF)
131 control_reg |= MIA_SPDIF;
133 /* Set the control register if it has changed */
134 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
135 if (wait_handshake(chip))
138 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
139 chip->comm_page->control_register = cpu_to_le32(control_reg);
140 chip->sample_rate = rate;
142 clear_handshake(chip);
143 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
150 static int set_input_clock(struct echoaudio *chip, u16 clock)
152 DE_ACT(("set_input_clock(%d)\n", clock));
153 if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL &&
154 clock != ECHO_CLOCK_SPDIF))
157 chip->input_clock = clock;
158 return set_sample_rate(chip, chip->sample_rate);
163 /* This function routes the sound from a virtual channel to a real output */
164 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
169 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
170 output >= num_busses_out(chip)))
173 if (wait_handshake(chip))
176 chip->vmixer_gain[output][pipe] = gain;
177 index = output * num_pipes_out(chip) + pipe;
178 chip->comm_page->vmixer[index] = gain;
180 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
186 /* Tell the DSP to read and update virtual mixer levels in comm page. */
187 static int update_vmixer_level(struct echoaudio *chip)
189 if (wait_handshake(chip))
191 clear_handshake(chip);
192 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
197 /* Tell the DSP to reread the flags from the comm page */
198 static int update_flags(struct echoaudio *chip)
200 if (wait_handshake(chip))
202 clear_handshake(chip);
203 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
208 static int set_professional_spdif(struct echoaudio *chip, char prof)
210 DE_ACT(("set_professional_spdif %d\n", prof));
212 chip->comm_page->flags |=
213 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
215 chip->comm_page->flags &=
216 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
217 chip->professional_spdif = prof;
218 return update_flags(chip);