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 | dev_err(chip->card->dev, |
50 | "check_asic_status: failed on read_dsp\n" ); |
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 | __le32 reg_value; |
67 | |
68 | /* Handle the digital input auto-mute */ |
69 | if (chip->digital_in_automute) |
70 | value |= GML_DIGITAL_IN_AUTO_MUTE; |
71 | else |
72 | value &= ~GML_DIGITAL_IN_AUTO_MUTE; |
73 | |
74 | dev_dbg(chip->card->dev, "write_control_reg: 0x%x\n" , value); |
75 | |
76 | /* Write the control register */ |
77 | reg_value = cpu_to_le32(value); |
78 | if (reg_value != chip->comm_page->control_register || force) { |
79 | if (wait_handshake(chip)) |
80 | return -EIO; |
81 | chip->comm_page->control_register = reg_value; |
82 | clear_handshake(chip); |
83 | return send_vector(chip, DSP_VC_WRITE_CONTROL_REG); |
84 | } |
85 | return 0; |
86 | } |
87 | |
88 | |
89 | |
90 | /* Gina24, Layla24, and Mona support digital input auto-mute. If the digital |
91 | input auto-mute is enabled, the DSP will only enable the digital inputs if |
92 | the card is syncing to a valid clock on the ADAT or S/PDIF inputs. |
93 | If the auto-mute is disabled, the digital inputs are enabled regardless of |
94 | what the input clock is set or what is connected. */ |
95 | static int set_input_auto_mute(struct echoaudio *chip, int automute) |
96 | { |
97 | dev_dbg(chip->card->dev, "set_input_auto_mute %d\n" , automute); |
98 | |
99 | chip->digital_in_automute = automute; |
100 | |
101 | /* Re-set the input clock to the current value - indirectly causes |
102 | the auto-mute flag to be sent to the DSP */ |
103 | return set_input_clock(chip, chip->input_clock); |
104 | } |
105 | |
106 | |
107 | |
108 | /* S/PDIF coax / S/PDIF optical / ADAT - switch */ |
109 | static int set_digital_mode(struct echoaudio *chip, u8 mode) |
110 | { |
111 | u8 previous_mode; |
112 | int err, i, o; |
113 | |
114 | if (chip->bad_board) |
115 | return -EIO; |
116 | |
117 | /* All audio channels must be closed before changing the digital mode */ |
118 | if (snd_BUG_ON(chip->pipe_alloc_mask)) |
119 | return -EAGAIN; |
120 | |
121 | if (snd_BUG_ON(!(chip->digital_modes & (1 << mode)))) |
122 | return -EINVAL; |
123 | |
124 | previous_mode = chip->digital_mode; |
125 | err = dsp_set_digital_mode(chip, mode); |
126 | |
127 | /* If we successfully changed the digital mode from or to ADAT, |
128 | then make sure all output, input and monitor levels are |
129 | updated by the DSP comm object. */ |
130 | if (err >= 0 && previous_mode != mode && |
131 | (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) { |
132 | spin_lock_irq(&chip->lock); |
133 | for (o = 0; o < num_busses_out(chip); o++) |
134 | for (i = 0; i < num_busses_in(chip); i++) |
135 | set_monitor_gain(chip, o, i, |
136 | chip->monitor_gain[o][i]); |
137 | |
138 | #ifdef ECHOCARD_HAS_INPUT_GAIN |
139 | for (i = 0; i < num_busses_in(chip); i++) |
140 | set_input_gain(chip, i, chip->input_gain[i]); |
141 | update_input_line_level(chip); |
142 | #endif |
143 | |
144 | for (o = 0; o < num_busses_out(chip); o++) |
145 | set_output_gain(chip, o, chip->output_gain[o]); |
146 | update_output_line_level(chip); |
147 | spin_unlock_irq(&chip->lock); |
148 | } |
149 | |
150 | return err; |
151 | } |
152 | |
153 | |
154 | |
155 | /* Set the S/PDIF output format */ |
156 | static int set_professional_spdif(struct echoaudio *chip, char prof) |
157 | { |
158 | u32 control_reg; |
159 | int err; |
160 | |
161 | /* Clear the current S/PDIF flags */ |
162 | control_reg = le32_to_cpu(chip->comm_page->control_register); |
163 | control_reg &= GML_SPDIF_FORMAT_CLEAR_MASK; |
164 | |
165 | /* Set the new S/PDIF flags depending on the mode */ |
166 | control_reg |= GML_SPDIF_TWO_CHANNEL | GML_SPDIF_24_BIT | |
167 | GML_SPDIF_COPY_PERMIT; |
168 | if (prof) { |
169 | /* Professional mode */ |
170 | control_reg |= GML_SPDIF_PRO_MODE; |
171 | |
172 | switch (chip->sample_rate) { |
173 | case 32000: |
174 | control_reg |= GML_SPDIF_SAMPLE_RATE0 | |
175 | GML_SPDIF_SAMPLE_RATE1; |
176 | break; |
177 | case 44100: |
178 | control_reg |= GML_SPDIF_SAMPLE_RATE0; |
179 | break; |
180 | case 48000: |
181 | control_reg |= GML_SPDIF_SAMPLE_RATE1; |
182 | break; |
183 | } |
184 | } else { |
185 | /* Consumer mode */ |
186 | switch (chip->sample_rate) { |
187 | case 32000: |
188 | control_reg |= GML_SPDIF_SAMPLE_RATE0 | |
189 | GML_SPDIF_SAMPLE_RATE1; |
190 | break; |
191 | case 48000: |
192 | control_reg |= GML_SPDIF_SAMPLE_RATE1; |
193 | break; |
194 | } |
195 | } |
196 | |
197 | err = write_control_reg(chip, control_reg, false); |
198 | if (err) |
199 | return err; |
200 | chip->professional_spdif = prof; |
201 | dev_dbg(chip->card->dev, "set_professional_spdif to %s\n" , |
202 | prof ? "Professional" : "Consumer" ); |
203 | return 0; |
204 | } |
205 | |