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, 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
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