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dd7b254d GP |
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_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, | |
36 | int gain); | |
37 | static int update_vmixer_level(struct echoaudio *chip); | |
38 | ||
39 | ||
40 | static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) | |
41 | { | |
42 | int err; | |
43 | ||
44 | DE_INIT(("init_hw() - Mia\n")); | |
45 | snd_assert((subdevice_id & 0xfff0) == MIA, return -ENODEV); | |
46 | ||
47 | if ((err = init_dsp_comm_page(chip))) { | |
48 | DE_INIT(("init_hw - could not initialize DSP comm page\n")); | |
49 | return err; | |
50 | } | |
51 | ||
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 | |
57 | works OK */ | |
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 | | |
62 | ECHO_CLOCK_BIT_SPDIF; | |
63 | ||
64 | if ((err = load_firmware(chip)) < 0) | |
65 | return err; | |
66 | chip->bad_board = FALSE; | |
67 | ||
68 | if ((err = init_line_levels(chip))) | |
69 | return err; | |
70 | ||
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); | |
82 | ||
83 | DE_INIT(("init_hw done\n")); | |
84 | return err; | |
85 | } | |
86 | ||
87 | ||
88 | ||
89 | static u32 detect_input_clocks(const struct echoaudio *chip) | |
90 | { | |
91 | u32 clocks_from_dsp, clock_bits; | |
92 | ||
93 | /* Map the DSP clock detect bits to the generic driver clock | |
94 | detect bits */ | |
95 | clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); | |
96 | ||
97 | clock_bits = ECHO_CLOCK_BIT_INTERNAL; | |
98 | ||
99 | if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) | |
100 | clock_bits |= ECHO_CLOCK_BIT_SPDIF; | |
101 | ||
102 | return clock_bits; | |
103 | } | |
104 | ||
105 | ||
106 | ||
107 | /* The Mia has no ASIC. Just do nothing */ | |
108 | static int load_asic(struct echoaudio *chip) | |
109 | { | |
110 | return 0; | |
111 | } | |
112 | ||
113 | ||
114 | ||
115 | static int set_sample_rate(struct echoaudio *chip, u32 rate) | |
116 | { | |
117 | u32 control_reg; | |
118 | ||
119 | switch (rate) { | |
120 | case 96000: | |
121 | control_reg = MIA_96000; | |
122 | break; | |
123 | case 88200: | |
124 | control_reg = MIA_88200; | |
125 | break; | |
126 | case 48000: | |
127 | control_reg = MIA_48000; | |
128 | break; | |
129 | case 44100: | |
130 | control_reg = MIA_44100; | |
131 | break; | |
132 | case 32000: | |
133 | control_reg = MIA_32000; | |
134 | break; | |
135 | default: | |
136 | DE_ACT(("set_sample_rate: %d invalid!\n", rate)); | |
137 | return -EINVAL; | |
138 | } | |
139 | ||
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; | |
143 | ||
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)) | |
147 | return -EIO; | |
148 | ||
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; | |
152 | ||
153 | clear_handshake(chip); | |
154 | return send_vector(chip, DSP_VC_UPDATE_CLOCKS); | |
155 | } | |
156 | return 0; | |
157 | } | |
158 | ||
159 | ||
160 | ||
161 | static int set_input_clock(struct echoaudio *chip, u16 clock) | |
162 | { | |
163 | DE_ACT(("set_input_clock(%d)\n", clock)); | |
164 | snd_assert(clock == ECHO_CLOCK_INTERNAL || clock == ECHO_CLOCK_SPDIF, | |
165 | return -EINVAL); | |
166 | ||
167 | chip->input_clock = clock; | |
168 | return set_sample_rate(chip, chip->sample_rate); | |
169 | } | |
170 | ||
171 | ||
172 | ||
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, | |
175 | int gain) | |
176 | { | |
177 | int index; | |
178 | ||
179 | snd_assert(pipe < num_pipes_out(chip) && | |
180 | output < num_busses_out(chip), return -EINVAL); | |
181 | ||
182 | if (wait_handshake(chip)) | |
183 | return -EIO; | |
184 | ||
185 | chip->vmixer_gain[output][pipe] = gain; | |
186 | index = output * num_pipes_out(chip) + pipe; | |
187 | chip->comm_page->vmixer[index] = gain; | |
188 | ||
189 | DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain)); | |
190 | return 0; | |
191 | } | |
192 | ||
193 | ||
194 | ||
195 | /* Tell the DSP to read and update virtual mixer levels in comm page. */ | |
196 | static int update_vmixer_level(struct echoaudio *chip) | |
197 | { | |
198 | if (wait_handshake(chip)) | |
199 | return -EIO; | |
200 | clear_handshake(chip); | |
201 | return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); | |
202 | } | |
203 | ||
204 | ||
205 | ||
206 | /* Tell the DSP to reread the flags from the comm page */ | |
207 | static int update_flags(struct echoaudio *chip) | |
208 | { | |
209 | if (wait_handshake(chip)) | |
210 | return -EIO; | |
211 | clear_handshake(chip); | |
212 | return send_vector(chip, DSP_VC_UPDATE_FLAGS); | |
213 | } | |
214 | ||
215 | ||
216 | ||
217 | static int set_professional_spdif(struct echoaudio *chip, char prof) | |
218 | { | |
219 | DE_ACT(("set_professional_spdif %d\n", prof)); | |
220 | if (prof) | |
221 | chip->comm_page->flags |= | |
222 | __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); | |
223 | else | |
224 | chip->comm_page->flags &= | |
225 | ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); | |
226 | chip->professional_spdif = prof; | |
227 | return update_flags(chip); | |
228 | } | |
229 |