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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; | |
48 | chip->dsp_code_to_load = &card_fw[FW_DARLA24_DSP]; | |
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 | ||
59 | if ((err = init_line_levels(chip)) < 0) | |
60 | return err; | |
61 | ||
62 | DE_INIT(("init_hw done\n")); | |
63 | return err; | |
64 | } | |
65 | ||
66 | ||
67 | ||
68 | static u32 detect_input_clocks(const struct echoaudio *chip) | |
69 | { | |
70 | u32 clocks_from_dsp, clock_bits; | |
71 | ||
72 | /* Map the DSP clock detect bits to the generic driver clock | |
73 | detect bits */ | |
74 | clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); | |
75 | ||
76 | clock_bits = ECHO_CLOCK_BIT_INTERNAL; | |
77 | ||
78 | if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_ESYNC) | |
79 | clock_bits |= ECHO_CLOCK_BIT_ESYNC; | |
80 | ||
81 | return clock_bits; | |
82 | } | |
83 | ||
84 | ||
85 | ||
86 | /* The Darla24 has no ASIC. Just do nothing */ | |
87 | static int load_asic(struct echoaudio *chip) | |
88 | { | |
89 | return 0; | |
90 | } | |
91 | ||
92 | ||
93 | ||
94 | static int set_sample_rate(struct echoaudio *chip, u32 rate) | |
95 | { | |
96 | u8 clock; | |
97 | ||
98 | switch (rate) { | |
99 | case 96000: | |
100 | clock = GD24_96000; | |
101 | break; | |
102 | case 88200: | |
103 | clock = GD24_88200; | |
104 | break; | |
105 | case 48000: | |
106 | clock = GD24_48000; | |
107 | break; | |
108 | case 44100: | |
109 | clock = GD24_44100; | |
110 | break; | |
111 | case 32000: | |
112 | clock = GD24_32000; | |
113 | break; | |
114 | case 22050: | |
115 | clock = GD24_22050; | |
116 | break; | |
117 | case 16000: | |
118 | clock = GD24_16000; | |
119 | break; | |
120 | case 11025: | |
121 | clock = GD24_11025; | |
122 | break; | |
123 | case 8000: | |
124 | clock = GD24_8000; | |
125 | break; | |
126 | default: | |
127 | DE_ACT(("set_sample_rate: Error, invalid sample rate %d\n", | |
128 | rate)); | |
129 | return -EINVAL; | |
130 | } | |
131 | ||
132 | if (wait_handshake(chip)) | |
133 | return -EIO; | |
134 | ||
135 | DE_ACT(("set_sample_rate: %d clock %d\n", rate, clock)); | |
136 | chip->sample_rate = rate; | |
137 | ||
138 | /* Override the sample rate if this card is set to Echo sync. */ | |
139 | if (chip->input_clock == ECHO_CLOCK_ESYNC) | |
140 | clock = GD24_EXT_SYNC; | |
141 | ||
142 | chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP ? */ | |
143 | chip->comm_page->gd_clock_state = clock; | |
144 | clear_handshake(chip); | |
145 | return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); | |
146 | } | |
147 | ||
148 | ||
149 | ||
150 | static int set_input_clock(struct echoaudio *chip, u16 clock) | |
151 | { | |
da3cec35 TI |
152 | if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL && |
153 | clock != ECHO_CLOCK_ESYNC)) | |
154 | return -EINVAL; | |
dd7b254d GP |
155 | chip->input_clock = clock; |
156 | return set_sample_rate(chip, chip->sample_rate); | |
157 | } | |
158 |