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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) { | |
49 | DE_INIT(("check_asic_status: failed on read_dsp\n")); | |
50 | chip->asic_loaded = FALSE; | |
51 | return -EIO; | |
52 | } | |
53 | ||
54 | chip->asic_loaded = (asic_status == ASIC_ALREADY_LOADED); | |
55 | return chip->asic_loaded ? 0 : -EIO; | |
56 | } | |
57 | ||
58 | ||
59 | ||
60 | /* Most configuration of Gina24, Layla24, or Mona is accomplished by writing | |
61 | the control register. write_control_reg sends the new control register | |
62 | value to the DSP. */ | |
63 | static int write_control_reg(struct echoaudio *chip, u32 value, char force) | |
64 | { | |
65 | /* Handle the digital input auto-mute */ | |
66 | if (chip->digital_in_automute) | |
67 | value |= GML_DIGITAL_IN_AUTO_MUTE; | |
68 | else | |
69 | value &= ~GML_DIGITAL_IN_AUTO_MUTE; | |
70 | ||
71 | DE_ACT(("write_control_reg: 0x%x\n", value)); | |
72 | ||
73 | /* Write the control register */ | |
74 | value = cpu_to_le32(value); | |
75 | if (value != chip->comm_page->control_register || force) { | |
76 | if (wait_handshake(chip)) | |
77 | return -EIO; | |
78 | chip->comm_page->control_register = value; | |
79 | clear_handshake(chip); | |
80 | return send_vector(chip, DSP_VC_WRITE_CONTROL_REG); | |
81 | } | |
82 | return 0; | |
83 | } | |
84 | ||
85 | ||
86 | ||
87 | /* Gina24, Layla24, and Mona support digital input auto-mute. If the digital | |
88 | input auto-mute is enabled, the DSP will only enable the digital inputs if | |
89 | the card is syncing to a valid clock on the ADAT or S/PDIF inputs. | |
90 | If the auto-mute is disabled, the digital inputs are enabled regardless of | |
91 | what the input clock is set or what is connected. */ | |
92 | static int set_input_auto_mute(struct echoaudio *chip, int automute) | |
93 | { | |
94 | DE_ACT(("set_input_auto_mute %d\n", automute)); | |
95 | ||
96 | chip->digital_in_automute = automute; | |
97 | ||
98 | /* Re-set the input clock to the current value - indirectly causes | |
99 | the auto-mute flag to be sent to the DSP */ | |
100 | return set_input_clock(chip, chip->input_clock); | |
101 | } | |
102 | ||
103 | ||
104 | ||
105 | /* S/PDIF coax / S/PDIF optical / ADAT - switch */ | |
106 | static int set_digital_mode(struct echoaudio *chip, u8 mode) | |
107 | { | |
108 | u8 previous_mode; | |
109 | int err, i, o; | |
110 | ||
111 | if (chip->bad_board) | |
112 | return -EIO; | |
113 | ||
114 | /* All audio channels must be closed before changing the digital mode */ | |
da3cec35 TI |
115 | if (snd_BUG_ON(chip->pipe_alloc_mask)) |
116 | return -EAGAIN; | |
dd7b254d | 117 | |
da3cec35 TI |
118 | if (snd_BUG_ON(!(chip->digital_modes & (1 << mode)))) |
119 | return -EINVAL; | |
dd7b254d GP |
120 | |
121 | previous_mode = chip->digital_mode; | |
122 | err = dsp_set_digital_mode(chip, mode); | |
123 | ||
124 | /* If we successfully changed the digital mode from or to ADAT, | |
125 | then make sure all output, input and monitor levels are | |
126 | updated by the DSP comm object. */ | |
127 | if (err >= 0 && previous_mode != mode && | |
128 | (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) { | |
129 | spin_lock_irq(&chip->lock); | |
130 | for (o = 0; o < num_busses_out(chip); o++) | |
131 | for (i = 0; i < num_busses_in(chip); i++) | |
132 | set_monitor_gain(chip, o, i, | |
133 | chip->monitor_gain[o][i]); | |
134 | ||
135 | #ifdef ECHOCARD_HAS_INPUT_GAIN | |
136 | for (i = 0; i < num_busses_in(chip); i++) | |
137 | set_input_gain(chip, i, chip->input_gain[i]); | |
138 | update_input_line_level(chip); | |
139 | #endif | |
140 | ||
141 | for (o = 0; o < num_busses_out(chip); o++) | |
142 | set_output_gain(chip, o, chip->output_gain[o]); | |
143 | update_output_line_level(chip); | |
144 | spin_unlock_irq(&chip->lock); | |
145 | } | |
146 | ||
147 | return err; | |
148 | } | |
149 | ||
150 | ||
151 | ||
152 | /* Set the S/PDIF output format */ | |
153 | static int set_professional_spdif(struct echoaudio *chip, char prof) | |
154 | { | |
155 | u32 control_reg; | |
156 | int err; | |
157 | ||
158 | /* Clear the current S/PDIF flags */ | |
159 | control_reg = le32_to_cpu(chip->comm_page->control_register); | |
160 | control_reg &= GML_SPDIF_FORMAT_CLEAR_MASK; | |
161 | ||
162 | /* Set the new S/PDIF flags depending on the mode */ | |
163 | control_reg |= GML_SPDIF_TWO_CHANNEL | GML_SPDIF_24_BIT | | |
164 | GML_SPDIF_COPY_PERMIT; | |
165 | if (prof) { | |
166 | /* Professional mode */ | |
167 | control_reg |= GML_SPDIF_PRO_MODE; | |
168 | ||
169 | switch (chip->sample_rate) { | |
170 | case 32000: | |
171 | control_reg |= GML_SPDIF_SAMPLE_RATE0 | | |
172 | GML_SPDIF_SAMPLE_RATE1; | |
173 | break; | |
174 | case 44100: | |
175 | control_reg |= GML_SPDIF_SAMPLE_RATE0; | |
176 | break; | |
177 | case 48000: | |
178 | control_reg |= GML_SPDIF_SAMPLE_RATE1; | |
179 | break; | |
180 | } | |
181 | } else { | |
182 | /* Consumer mode */ | |
183 | switch (chip->sample_rate) { | |
184 | case 32000: | |
185 | control_reg |= GML_SPDIF_SAMPLE_RATE0 | | |
186 | GML_SPDIF_SAMPLE_RATE1; | |
187 | break; | |
188 | case 48000: | |
189 | control_reg |= GML_SPDIF_SAMPLE_RATE1; | |
190 | break; | |
191 | } | |
192 | } | |
193 | ||
194 | if ((err = write_control_reg(chip, control_reg, FALSE))) | |
195 | return err; | |
196 | chip->professional_spdif = prof; | |
197 | DE_ACT(("set_professional_spdif to %s\n", | |
198 | prof ? "Professional" : "Consumer")); | |
199 | return 0; | |
200 | } |