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