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 set_professional_spdif(struct echoaudio *chip, char prof); |
33 | static int update_flags(struct echoaudio *chip); |
34 | |
35 | |
36 | static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) |
37 | { |
38 | int err; |
39 | |
40 | if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20)) |
41 | return -ENODEV; |
42 | |
43 | err = init_dsp_comm_page(chip); |
44 | if (err) { |
45 | dev_err(chip->card->dev, |
46 | "init_hw - could not initialize DSP comm page\n" ); |
47 | return err; |
48 | } |
49 | |
50 | chip->device_id = device_id; |
51 | chip->subdevice_id = subdevice_id; |
52 | chip->bad_board = true; |
53 | chip->dsp_code_to_load = FW_GINA20_DSP; |
54 | chip->spdif_status = GD_SPDIF_STATUS_UNDEF; |
55 | chip->clock_state = GD_CLOCK_UNDEF; |
56 | /* Since this card has no ASIC, mark it as loaded so everything |
57 | works OK */ |
58 | chip->asic_loaded = true; |
59 | chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | |
60 | ECHO_CLOCK_BIT_SPDIF; |
61 | |
62 | err = load_firmware(chip); |
63 | if (err < 0) |
64 | return err; |
65 | chip->bad_board = false; |
66 | |
67 | return err; |
68 | } |
69 | |
70 | |
71 | |
72 | static int set_mixer_defaults(struct echoaudio *chip) |
73 | { |
74 | chip->professional_spdif = false; |
75 | return init_line_levels(chip); |
76 | } |
77 | |
78 | |
79 | |
80 | static u32 detect_input_clocks(const struct echoaudio *chip) |
81 | { |
82 | u32 clocks_from_dsp, clock_bits; |
83 | |
84 | /* Map the DSP clock detect bits to the generic driver clock |
85 | detect bits */ |
86 | clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); |
87 | |
88 | clock_bits = ECHO_CLOCK_BIT_INTERNAL; |
89 | |
90 | if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) |
91 | clock_bits |= ECHO_CLOCK_BIT_SPDIF; |
92 | |
93 | return clock_bits; |
94 | } |
95 | |
96 | |
97 | |
98 | /* The Gina20 has no ASIC. Just do nothing */ |
99 | static int load_asic(struct echoaudio *chip) |
100 | { |
101 | return 0; |
102 | } |
103 | |
104 | |
105 | |
106 | static int set_sample_rate(struct echoaudio *chip, u32 rate) |
107 | { |
108 | u8 clock_state, spdif_status; |
109 | |
110 | if (wait_handshake(chip)) |
111 | return -EIO; |
112 | |
113 | switch (rate) { |
114 | case 44100: |
115 | clock_state = GD_CLOCK_44; |
116 | spdif_status = GD_SPDIF_STATUS_44; |
117 | break; |
118 | case 48000: |
119 | clock_state = GD_CLOCK_48; |
120 | spdif_status = GD_SPDIF_STATUS_48; |
121 | break; |
122 | default: |
123 | clock_state = GD_CLOCK_NOCHANGE; |
124 | spdif_status = GD_SPDIF_STATUS_NOCHANGE; |
125 | break; |
126 | } |
127 | |
128 | if (chip->clock_state == clock_state) |
129 | clock_state = GD_CLOCK_NOCHANGE; |
130 | if (spdif_status == chip->spdif_status) |
131 | spdif_status = GD_SPDIF_STATUS_NOCHANGE; |
132 | |
133 | chip->comm_page->sample_rate = cpu_to_le32(rate); |
134 | chip->comm_page->gd_clock_state = clock_state; |
135 | chip->comm_page->gd_spdif_status = spdif_status; |
136 | chip->comm_page->gd_resampler_state = 3; /* magic number - should always be 3 */ |
137 | |
138 | /* Save the new audio state if it changed */ |
139 | if (clock_state != GD_CLOCK_NOCHANGE) |
140 | chip->clock_state = clock_state; |
141 | if (spdif_status != GD_SPDIF_STATUS_NOCHANGE) |
142 | chip->spdif_status = spdif_status; |
143 | chip->sample_rate = rate; |
144 | |
145 | clear_handshake(chip); |
146 | return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); |
147 | } |
148 | |
149 | |
150 | |
151 | static int set_input_clock(struct echoaudio *chip, u16 clock) |
152 | { |
153 | |
154 | switch (clock) { |
155 | case ECHO_CLOCK_INTERNAL: |
156 | /* Reset the audio state to unknown (just in case) */ |
157 | chip->clock_state = GD_CLOCK_UNDEF; |
158 | chip->spdif_status = GD_SPDIF_STATUS_UNDEF; |
159 | set_sample_rate(chip, rate: chip->sample_rate); |
160 | chip->input_clock = clock; |
161 | break; |
162 | case ECHO_CLOCK_SPDIF: |
163 | chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN; |
164 | chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE; |
165 | clear_handshake(chip); |
166 | send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); |
167 | chip->clock_state = GD_CLOCK_SPDIFIN; |
168 | chip->input_clock = clock; |
169 | break; |
170 | default: |
171 | return -EINVAL; |
172 | } |
173 | |
174 | return 0; |
175 | } |
176 | |
177 | |
178 | |
179 | /* Set input bus gain (one unit is 0.5dB !) */ |
180 | static int set_input_gain(struct echoaudio *chip, u16 input, int gain) |
181 | { |
182 | if (snd_BUG_ON(input >= num_busses_in(chip))) |
183 | return -EINVAL; |
184 | |
185 | if (wait_handshake(chip)) |
186 | return -EIO; |
187 | |
188 | chip->input_gain[input] = gain; |
189 | gain += GL20_INPUT_GAIN_MAGIC_NUMBER; |
190 | chip->comm_page->line_in_level[input] = gain; |
191 | return 0; |
192 | } |
193 | |
194 | |
195 | |
196 | /* Tell the DSP to reread the flags from the comm page */ |
197 | static int update_flags(struct echoaudio *chip) |
198 | { |
199 | if (wait_handshake(chip)) |
200 | return -EIO; |
201 | clear_handshake(chip); |
202 | return send_vector(chip, DSP_VC_UPDATE_FLAGS); |
203 | } |
204 | |
205 | |
206 | |
207 | static int set_professional_spdif(struct echoaudio *chip, char prof) |
208 | { |
209 | if (prof) |
210 | chip->comm_page->flags |= |
211 | cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); |
212 | else |
213 | chip->comm_page->flags &= |
214 | ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); |
215 | chip->professional_spdif = prof; |
216 | return update_flags(chip); |
217 | } |
218 | |