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 init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) |
33 | { |
34 | int err; |
35 | |
36 | if (snd_BUG_ON((subdevice_id & 0xfff0) != DARLA24)) |
37 | return -ENODEV; |
38 | |
39 | err = init_dsp_comm_page(chip); |
40 | if (err) { |
41 | dev_err(chip->card->dev, |
42 | "init_hw: could not initialize DSP comm page\n" ); |
43 | return err; |
44 | } |
45 | |
46 | chip->device_id = device_id; |
47 | chip->subdevice_id = subdevice_id; |
48 | chip->bad_board = true; |
49 | chip->dsp_code_to_load = FW_DARLA24_DSP; |
50 | /* Since this card has no ASIC, mark it as loaded so everything |
51 | works OK */ |
52 | chip->asic_loaded = true; |
53 | chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | |
54 | ECHO_CLOCK_BIT_ESYNC; |
55 | |
56 | err = load_firmware(chip); |
57 | if (err < 0) |
58 | return err; |
59 | chip->bad_board = false; |
60 | |
61 | return err; |
62 | } |
63 | |
64 | |
65 | |
66 | static int set_mixer_defaults(struct echoaudio *chip) |
67 | { |
68 | return init_line_levels(chip); |
69 | } |
70 | |
71 | |
72 | |
73 | static u32 detect_input_clocks(const struct echoaudio *chip) |
74 | { |
75 | u32 clocks_from_dsp, clock_bits; |
76 | |
77 | /* Map the DSP clock detect bits to the generic driver clock |
78 | detect bits */ |
79 | clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); |
80 | |
81 | clock_bits = ECHO_CLOCK_BIT_INTERNAL; |
82 | |
83 | if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_ESYNC) |
84 | clock_bits |= ECHO_CLOCK_BIT_ESYNC; |
85 | |
86 | return clock_bits; |
87 | } |
88 | |
89 | |
90 | |
91 | /* The Darla24 has no ASIC. Just do nothing */ |
92 | static int load_asic(struct echoaudio *chip) |
93 | { |
94 | return 0; |
95 | } |
96 | |
97 | |
98 | |
99 | static int set_sample_rate(struct echoaudio *chip, u32 rate) |
100 | { |
101 | u8 clock; |
102 | |
103 | switch (rate) { |
104 | case 96000: |
105 | clock = GD24_96000; |
106 | break; |
107 | case 88200: |
108 | clock = GD24_88200; |
109 | break; |
110 | case 48000: |
111 | clock = GD24_48000; |
112 | break; |
113 | case 44100: |
114 | clock = GD24_44100; |
115 | break; |
116 | case 32000: |
117 | clock = GD24_32000; |
118 | break; |
119 | case 22050: |
120 | clock = GD24_22050; |
121 | break; |
122 | case 16000: |
123 | clock = GD24_16000; |
124 | break; |
125 | case 11025: |
126 | clock = GD24_11025; |
127 | break; |
128 | case 8000: |
129 | clock = GD24_8000; |
130 | break; |
131 | default: |
132 | dev_err(chip->card->dev, |
133 | "set_sample_rate: Error, invalid sample rate %d\n" , |
134 | rate); |
135 | return -EINVAL; |
136 | } |
137 | |
138 | if (wait_handshake(chip)) |
139 | return -EIO; |
140 | |
141 | dev_dbg(chip->card->dev, |
142 | "set_sample_rate: %d clock %d\n" , rate, clock); |
143 | chip->sample_rate = rate; |
144 | |
145 | /* Override the sample rate if this card is set to Echo sync. */ |
146 | if (chip->input_clock == ECHO_CLOCK_ESYNC) |
147 | clock = GD24_EXT_SYNC; |
148 | |
149 | chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP ? */ |
150 | chip->comm_page->gd_clock_state = clock; |
151 | clear_handshake(chip); |
152 | return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); |
153 | } |
154 | |
155 | |
156 | |
157 | static int set_input_clock(struct echoaudio *chip, u16 clock) |
158 | { |
159 | if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && |
160 | clock != ECHO_CLOCK_ESYNC)) |
161 | return -EINVAL; |
162 | chip->input_clock = clock; |
163 | return set_sample_rate(chip, rate: chip->sample_rate); |
164 | } |
165 | |
166 | |