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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 | /* These functions are common for Gina24, Layla24 and Mona cards */ | |
33 | ||
34 | ||
35 | /* ASIC status check - some cards have one or two ASICs that need to be | |
36 | loaded. Once that load is complete, this function is called to see if | |
37 | the load was successful. | |
38 | If this load fails, it does not necessarily mean that the hardware is | |
39 | defective - the external box may be disconnected or turned off. */ | |
40 | static int check_asic_status(struct echoaudio *chip) | |
41 | { | |
42 | u32 asic_status; | |
43 | ||
44 | send_vector(chip, DSP_VC_TEST_ASIC); | |
45 | ||
46 | /* The DSP will return a value to indicate whether or not the | |
47 | ASIC is currently loaded */ | |
48 | if (read_dsp(chip, &asic_status) < 0) { | |
b5b4a41b SM |
49 | dev_err(chip->card->dev, |
50 | "check_asic_status: failed on read_dsp\n"); | |
dd7b254d GP |
51 | chip->asic_loaded = FALSE; |
52 | return -EIO; | |
53 | } | |
54 | ||
55 | chip->asic_loaded = (asic_status == ASIC_ALREADY_LOADED); | |
56 | return chip->asic_loaded ? 0 : -EIO; | |
57 | } | |
58 | ||
59 | ||
60 | ||
61 | /* Most configuration of Gina24, Layla24, or Mona is accomplished by writing | |
62 | the control register. write_control_reg sends the new control register | |
63 | value to the DSP. */ | |
64 | static int write_control_reg(struct echoaudio *chip, u32 value, char force) | |
65 | { | |
66 | /* Handle the digital input auto-mute */ | |
67 | if (chip->digital_in_automute) | |
68 | value |= GML_DIGITAL_IN_AUTO_MUTE; | |
69 | else | |
70 | value &= ~GML_DIGITAL_IN_AUTO_MUTE; | |
71 | ||
b5b4a41b | 72 | dev_dbg(chip->card->dev, "write_control_reg: 0x%x\n", value); |
dd7b254d GP |
73 | |
74 | /* Write the control register */ | |
75 | value = cpu_to_le32(value); | |
76 | if (value != chip->comm_page->control_register || force) { | |
77 | if (wait_handshake(chip)) | |
78 | return -EIO; | |
79 | chip->comm_page->control_register = value; | |
80 | clear_handshake(chip); | |
81 | return send_vector(chip, DSP_VC_WRITE_CONTROL_REG); | |
82 | } | |
83 | return 0; | |
84 | } | |
85 | ||
86 | ||
87 | ||
88 | /* Gina24, Layla24, and Mona support digital input auto-mute. If the digital | |
89 | input auto-mute is enabled, the DSP will only enable the digital inputs if | |
90 | the card is syncing to a valid clock on the ADAT or S/PDIF inputs. | |
91 | If the auto-mute is disabled, the digital inputs are enabled regardless of | |
92 | what the input clock is set or what is connected. */ | |
93 | static int set_input_auto_mute(struct echoaudio *chip, int automute) | |
94 | { | |
b5b4a41b | 95 | dev_dbg(chip->card->dev, "set_input_auto_mute %d\n", automute); |
dd7b254d GP |
96 | |
97 | chip->digital_in_automute = automute; | |
98 | ||
99 | /* Re-set the input clock to the current value - indirectly causes | |
100 | the auto-mute flag to be sent to the DSP */ | |
101 | return set_input_clock(chip, chip->input_clock); | |
102 | } | |
103 | ||
104 | ||
105 | ||
106 | /* S/PDIF coax / S/PDIF optical / ADAT - switch */ | |
107 | static int set_digital_mode(struct echoaudio *chip, u8 mode) | |
108 | { | |
109 | u8 previous_mode; | |
110 | int err, i, o; | |
111 | ||
112 | if (chip->bad_board) | |
113 | return -EIO; | |
114 | ||
115 | /* All audio channels must be closed before changing the digital mode */ | |
da3cec35 TI |
116 | if (snd_BUG_ON(chip->pipe_alloc_mask)) |
117 | return -EAGAIN; | |
dd7b254d | 118 | |
da3cec35 TI |
119 | if (snd_BUG_ON(!(chip->digital_modes & (1 << mode)))) |
120 | return -EINVAL; | |
dd7b254d GP |
121 | |
122 | previous_mode = chip->digital_mode; | |
123 | err = dsp_set_digital_mode(chip, mode); | |
124 | ||
125 | /* If we successfully changed the digital mode from or to ADAT, | |
126 | then make sure all output, input and monitor levels are | |
127 | updated by the DSP comm object. */ | |
128 | if (err >= 0 && previous_mode != mode && | |
129 | (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) { | |
130 | spin_lock_irq(&chip->lock); | |
131 | for (o = 0; o < num_busses_out(chip); o++) | |
132 | for (i = 0; i < num_busses_in(chip); i++) | |
133 | set_monitor_gain(chip, o, i, | |
134 | chip->monitor_gain[o][i]); | |
135 | ||
136 | #ifdef ECHOCARD_HAS_INPUT_GAIN | |
137 | for (i = 0; i < num_busses_in(chip); i++) | |
138 | set_input_gain(chip, i, chip->input_gain[i]); | |
139 | update_input_line_level(chip); | |
140 | #endif | |
141 | ||
142 | for (o = 0; o < num_busses_out(chip); o++) | |
143 | set_output_gain(chip, o, chip->output_gain[o]); | |
144 | update_output_line_level(chip); | |
145 | spin_unlock_irq(&chip->lock); | |
146 | } | |
147 | ||
148 | return err; | |
149 | } | |
150 | ||
151 | ||
152 | ||
153 | /* Set the S/PDIF output format */ | |
154 | static int set_professional_spdif(struct echoaudio *chip, char prof) | |
155 | { | |
156 | u32 control_reg; | |
157 | int err; | |
158 | ||
159 | /* Clear the current S/PDIF flags */ | |
160 | control_reg = le32_to_cpu(chip->comm_page->control_register); | |
161 | control_reg &= GML_SPDIF_FORMAT_CLEAR_MASK; | |
162 | ||
163 | /* Set the new S/PDIF flags depending on the mode */ | |
164 | control_reg |= GML_SPDIF_TWO_CHANNEL | GML_SPDIF_24_BIT | | |
165 | GML_SPDIF_COPY_PERMIT; | |
166 | if (prof) { | |
167 | /* Professional mode */ | |
168 | control_reg |= GML_SPDIF_PRO_MODE; | |
169 | ||
170 | switch (chip->sample_rate) { | |
171 | case 32000: | |
172 | control_reg |= GML_SPDIF_SAMPLE_RATE0 | | |
173 | GML_SPDIF_SAMPLE_RATE1; | |
174 | break; | |
175 | case 44100: | |
176 | control_reg |= GML_SPDIF_SAMPLE_RATE0; | |
177 | break; | |
178 | case 48000: | |
179 | control_reg |= GML_SPDIF_SAMPLE_RATE1; | |
180 | break; | |
181 | } | |
182 | } else { | |
183 | /* Consumer mode */ | |
184 | switch (chip->sample_rate) { | |
185 | case 32000: | |
186 | control_reg |= GML_SPDIF_SAMPLE_RATE0 | | |
187 | GML_SPDIF_SAMPLE_RATE1; | |
188 | break; | |
189 | case 48000: | |
190 | control_reg |= GML_SPDIF_SAMPLE_RATE1; | |
191 | break; | |
192 | } | |
193 | } | |
194 | ||
195 | if ((err = write_control_reg(chip, control_reg, FALSE))) | |
196 | return err; | |
197 | chip->professional_spdif = prof; | |
b5b4a41b SM |
198 | dev_dbg(chip->card->dev, "set_professional_spdif to %s\n", |
199 | prof ? "Professional" : "Consumer"); | |
dd7b254d GP |
200 | return 0; |
201 | } |