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 | if (snd_BUG_ON((subdevice_id & 0xfff0) != MIA)) |
45 | return -ENODEV; |
46 | |
47 | err = init_dsp_comm_page(chip); |
48 | if (err) { |
49 | dev_err(chip->card->dev, |
50 | "init_hw - could not initialize DSP comm page\n" ); |
51 | return err; |
52 | } |
53 | |
54 | chip->device_id = device_id; |
55 | chip->subdevice_id = subdevice_id; |
56 | chip->bad_board = true; |
57 | chip->dsp_code_to_load = FW_MIA_DSP; |
58 | /* Since this card has no ASIC, mark it as loaded so everything |
59 | works OK */ |
60 | chip->asic_loaded = true; |
61 | if ((subdevice_id & 0x0000f) == MIA_MIDI_REV) |
62 | chip->has_midi = true; |
63 | chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | |
64 | ECHO_CLOCK_BIT_SPDIF; |
65 | |
66 | err = load_firmware(chip); |
67 | if (err < 0) |
68 | return err; |
69 | chip->bad_board = false; |
70 | |
71 | return err; |
72 | } |
73 | |
74 | |
75 | |
76 | static int set_mixer_defaults(struct echoaudio *chip) |
77 | { |
78 | return init_line_levels(chip); |
79 | } |
80 | |
81 | |
82 | |
83 | static u32 detect_input_clocks(const struct echoaudio *chip) |
84 | { |
85 | u32 clocks_from_dsp, clock_bits; |
86 | |
87 | /* Map the DSP clock detect bits to the generic driver clock |
88 | detect bits */ |
89 | clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); |
90 | |
91 | clock_bits = ECHO_CLOCK_BIT_INTERNAL; |
92 | |
93 | if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) |
94 | clock_bits |= ECHO_CLOCK_BIT_SPDIF; |
95 | |
96 | return clock_bits; |
97 | } |
98 | |
99 | |
100 | |
101 | /* The Mia has no ASIC. Just do nothing */ |
102 | static int load_asic(struct echoaudio *chip) |
103 | { |
104 | return 0; |
105 | } |
106 | |
107 | |
108 | |
109 | static int set_sample_rate(struct echoaudio *chip, u32 rate) |
110 | { |
111 | u32 control_reg; |
112 | |
113 | switch (rate) { |
114 | case 96000: |
115 | control_reg = MIA_96000; |
116 | break; |
117 | case 88200: |
118 | control_reg = MIA_88200; |
119 | break; |
120 | case 48000: |
121 | control_reg = MIA_48000; |
122 | break; |
123 | case 44100: |
124 | control_reg = MIA_44100; |
125 | break; |
126 | case 32000: |
127 | control_reg = MIA_32000; |
128 | break; |
129 | default: |
130 | dev_err(chip->card->dev, |
131 | "set_sample_rate: %d invalid!\n" , rate); |
132 | return -EINVAL; |
133 | } |
134 | |
135 | /* Override the clock setting if this Mia is set to S/PDIF clock */ |
136 | if (chip->input_clock == ECHO_CLOCK_SPDIF) |
137 | control_reg |= MIA_SPDIF; |
138 | |
139 | /* Set the control register if it has changed */ |
140 | if (control_reg != le32_to_cpu(chip->comm_page->control_register)) { |
141 | if (wait_handshake(chip)) |
142 | return -EIO; |
143 | |
144 | chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */ |
145 | chip->comm_page->control_register = cpu_to_le32(control_reg); |
146 | chip->sample_rate = rate; |
147 | |
148 | clear_handshake(chip); |
149 | return send_vector(chip, DSP_VC_UPDATE_CLOCKS); |
150 | } |
151 | return 0; |
152 | } |
153 | |
154 | |
155 | |
156 | static int set_input_clock(struct echoaudio *chip, u16 clock) |
157 | { |
158 | dev_dbg(chip->card->dev, "set_input_clock(%d)\n" , clock); |
159 | if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && |
160 | clock != ECHO_CLOCK_SPDIF)) |
161 | return -EINVAL; |
162 | |
163 | chip->input_clock = clock; |
164 | return set_sample_rate(chip, rate: chip->sample_rate); |
165 | } |
166 | |
167 | |
168 | |
169 | /* This function routes the sound from a virtual channel to a real output */ |
170 | static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, |
171 | int gain) |
172 | { |
173 | int index; |
174 | |
175 | if (snd_BUG_ON(pipe >= num_pipes_out(chip) || |
176 | output >= num_busses_out(chip))) |
177 | return -EINVAL; |
178 | |
179 | if (wait_handshake(chip)) |
180 | return -EIO; |
181 | |
182 | chip->vmixer_gain[output][pipe] = gain; |
183 | index = output * num_pipes_out(chip) + pipe; |
184 | chip->comm_page->vmixer[index] = gain; |
185 | |
186 | dev_dbg(chip->card->dev, |
187 | "set_vmixer_gain: pipe %d, out %d = %d\n" , pipe, output, gain); |
188 | return 0; |
189 | } |
190 | |
191 | |
192 | |
193 | /* Tell the DSP to read and update virtual mixer levels in comm page. */ |
194 | static int update_vmixer_level(struct echoaudio *chip) |
195 | { |
196 | if (wait_handshake(chip)) |
197 | return -EIO; |
198 | clear_handshake(chip); |
199 | return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); |
200 | } |
201 | |
202 | |
203 | |
204 | /* Tell the DSP to reread the flags from the comm page */ |
205 | static int update_flags(struct echoaudio *chip) |
206 | { |
207 | if (wait_handshake(chip)) |
208 | return -EIO; |
209 | clear_handshake(chip); |
210 | return send_vector(chip, DSP_VC_UPDATE_FLAGS); |
211 | } |
212 | |
213 | |
214 | |
215 | static int set_professional_spdif(struct echoaudio *chip, char prof) |
216 | { |
217 | dev_dbg(chip->card->dev, "set_professional_spdif %d\n" , prof); |
218 | if (prof) |
219 | chip->comm_page->flags |= |
220 | cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); |
221 | else |
222 | chip->comm_page->flags &= |
223 | ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); |
224 | chip->professional_spdif = prof; |
225 | return update_flags(chip); |
226 | } |
227 | |
228 | |