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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 | static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) | |
33 | { | |
34 | int err; | |
35 | ||
36 | DE_INIT(("init_hw() - Darla24\n")); | |
da3cec35 TI |
37 | if (snd_BUG_ON((subdevice_id & 0xfff0) != DARLA24)) |
38 | return -ENODEV; | |
dd7b254d GP |
39 | |
40 | if ((err = init_dsp_comm_page(chip))) { | |
41 | DE_INIT(("init_hw - could not initialize DSP comm page\n")); | |
42 | return err; | |
43 | } | |
44 | ||
45 | chip->device_id = device_id; | |
46 | chip->subdevice_id = subdevice_id; | |
47 | chip->bad_board = TRUE; | |
19b50063 | 48 | chip->dsp_code_to_load = FW_DARLA24_DSP; |
dd7b254d GP |
49 | /* Since this card has no ASIC, mark it as loaded so everything |
50 | works OK */ | |
51 | chip->asic_loaded = TRUE; | |
52 | chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | | |
53 | ECHO_CLOCK_BIT_ESYNC; | |
54 | ||
55 | if ((err = load_firmware(chip)) < 0) | |
56 | return err; | |
57 | chip->bad_board = FALSE; | |
58 | ||
dd7b254d GP |
59 | DE_INIT(("init_hw done\n")); |
60 | return err; | |
61 | } | |
62 | ||
63 | ||
64 | ||
ad3499f4 GP |
65 | static int set_mixer_defaults(struct echoaudio *chip) |
66 | { | |
67 | return init_line_levels(chip); | |
68 | } | |
69 | ||
70 | ||
71 | ||
dd7b254d GP |
72 | static u32 detect_input_clocks(const struct echoaudio *chip) |
73 | { | |
74 | u32 clocks_from_dsp, clock_bits; | |
75 | ||
76 | /* Map the DSP clock detect bits to the generic driver clock | |
77 | detect bits */ | |
78 | clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); | |
79 | ||
80 | clock_bits = ECHO_CLOCK_BIT_INTERNAL; | |
81 | ||
82 | if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_ESYNC) | |
83 | clock_bits |= ECHO_CLOCK_BIT_ESYNC; | |
84 | ||
85 | return clock_bits; | |
86 | } | |
87 | ||
88 | ||
89 | ||
90 | /* The Darla24 has no ASIC. Just do nothing */ | |
91 | static int load_asic(struct echoaudio *chip) | |
92 | { | |
93 | return 0; | |
94 | } | |
95 | ||
96 | ||
97 | ||
98 | static int set_sample_rate(struct echoaudio *chip, u32 rate) | |
99 | { | |
100 | u8 clock; | |
101 | ||
102 | switch (rate) { | |
103 | case 96000: | |
104 | clock = GD24_96000; | |
105 | break; | |
106 | case 88200: | |
107 | clock = GD24_88200; | |
108 | break; | |
109 | case 48000: | |
110 | clock = GD24_48000; | |
111 | break; | |
112 | case 44100: | |
113 | clock = GD24_44100; | |
114 | break; | |
115 | case 32000: | |
116 | clock = GD24_32000; | |
117 | break; | |
118 | case 22050: | |
119 | clock = GD24_22050; | |
120 | break; | |
121 | case 16000: | |
122 | clock = GD24_16000; | |
123 | break; | |
124 | case 11025: | |
125 | clock = GD24_11025; | |
126 | break; | |
127 | case 8000: | |
128 | clock = GD24_8000; | |
129 | break; | |
130 | default: | |
131 | DE_ACT(("set_sample_rate: Error, invalid sample rate %d\n", | |
132 | rate)); | |
133 | return -EINVAL; | |
134 | } | |
135 | ||
136 | if (wait_handshake(chip)) | |
137 | return -EIO; | |
138 | ||
139 | DE_ACT(("set_sample_rate: %d clock %d\n", rate, clock)); | |
140 | chip->sample_rate = rate; | |
141 | ||
142 | /* Override the sample rate if this card is set to Echo sync. */ | |
143 | if (chip->input_clock == ECHO_CLOCK_ESYNC) | |
144 | clock = GD24_EXT_SYNC; | |
145 | ||
146 | chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP ? */ | |
147 | chip->comm_page->gd_clock_state = clock; | |
148 | clear_handshake(chip); | |
149 | return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); | |
150 | } | |
151 | ||
152 | ||
153 | ||
154 | static int set_input_clock(struct echoaudio *chip, u16 clock) | |
155 | { | |
da3cec35 TI |
156 | if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && |
157 | clock != ECHO_CLOCK_ESYNC)) | |
158 | return -EINVAL; | |
dd7b254d GP |
159 | chip->input_clock = clock; |
160 | return set_sample_rate(chip, chip->sample_rate); | |
161 | } | |
162 |