ALSA: Use KBUILD_MODNAME for pci_driver.name entries
[linux-2.6.git] / sound / pci / echoaudio / gina20_dsp.c
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         DE_INIT(("init_hw() - Gina20\n"));
41         if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20))
42                 return -ENODEV;
43
44         if ((err = init_dsp_comm_page(chip))) {
45                 DE_INIT(("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         DE_INIT(("init_hw done\n"));
66         return err;
67 }
68
69
70
71 static int set_mixer_defaults(struct echoaudio *chip)
72 {
73         chip->professional_spdif = FALSE;
74         return init_line_levels(chip);
75 }
76
77
78
79 static u32 detect_input_clocks(const struct echoaudio *chip)
80 {
81         u32 clocks_from_dsp, clock_bits;
82
83         /* Map the DSP clock detect bits to the generic driver clock
84            detect bits */
85         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
86
87         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
88
89         if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
90                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
91
92         return clock_bits;
93 }
94
95
96
97 /* The Gina20 has no ASIC. Just do nothing */
98 static int load_asic(struct echoaudio *chip)
99 {
100         return 0;
101 }
102
103
104
105 static int set_sample_rate(struct echoaudio *chip, u32 rate)
106 {
107         u8 clock_state, spdif_status;
108
109         if (wait_handshake(chip))
110                 return -EIO;
111
112         switch (rate) {
113         case 44100:
114                 clock_state = GD_CLOCK_44;
115                 spdif_status = GD_SPDIF_STATUS_44;
116                 break;
117         case 48000:
118                 clock_state = GD_CLOCK_48;
119                 spdif_status = GD_SPDIF_STATUS_48;
120                 break;
121         default:
122                 clock_state = GD_CLOCK_NOCHANGE;
123                 spdif_status = GD_SPDIF_STATUS_NOCHANGE;
124                 break;
125         }
126
127         if (chip->clock_state == clock_state)
128                 clock_state = GD_CLOCK_NOCHANGE;
129         if (spdif_status == chip->spdif_status)
130                 spdif_status = GD_SPDIF_STATUS_NOCHANGE;
131
132         chip->comm_page->sample_rate = cpu_to_le32(rate);
133         chip->comm_page->gd_clock_state = clock_state;
134         chip->comm_page->gd_spdif_status = spdif_status;
135         chip->comm_page->gd_resampler_state = 3;        /* magic number - should always be 3 */
136
137         /* Save the new audio state if it changed */
138         if (clock_state != GD_CLOCK_NOCHANGE)
139                 chip->clock_state = clock_state;
140         if (spdif_status != GD_SPDIF_STATUS_NOCHANGE)
141                 chip->spdif_status = spdif_status;
142         chip->sample_rate = rate;
143
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 {
152         DE_ACT(("set_input_clock:\n"));
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                 DE_ACT(("Set Gina clock to INTERNAL\n"));
162                 break;
163         case ECHO_CLOCK_SPDIF:
164                 chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN;
165                 chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE;
166                 clear_handshake(chip);
167                 send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
168                 chip->clock_state = GD_CLOCK_SPDIFIN;
169                 DE_ACT(("Set Gina20 clock to SPDIF\n"));
170                 chip->input_clock = clock;
171                 break;
172         default:
173                 return -EINVAL;
174         }
175
176         return 0;
177 }
178
179
180
181 /* Set input bus gain (one unit is 0.5dB !) */
182 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
183 {
184         if (snd_BUG_ON(input >= num_busses_in(chip)))
185                 return -EINVAL;
186
187         if (wait_handshake(chip))
188                 return -EIO;
189
190         chip->input_gain[input] = gain;
191         gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
192         chip->comm_page->line_in_level[input] = gain;
193         return 0;
194 }
195
196
197
198 /* Tell the DSP to reread the flags from the comm page */
199 static int update_flags(struct echoaudio *chip)
200 {
201         if (wait_handshake(chip))
202                 return -EIO;
203         clear_handshake(chip);
204         return send_vector(chip, DSP_VC_UPDATE_FLAGS);
205 }
206
207
208
209 static int set_professional_spdif(struct echoaudio *chip, char prof)
210 {
211         DE_ACT(("set_professional_spdif %d\n", prof));
212         if (prof)
213                 chip->comm_page->flags |=
214                         cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
215         else
216                 chip->comm_page->flags &=
217                         ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
218         chip->professional_spdif = prof;
219         return update_flags(chip);
220 }