[ALSA] Add echoaudio sound drivers
[linux-2.6.git] / sound / pci / echoaudio / echo3g_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 static int load_asic(struct echoaudio *chip);
32 static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode);
33 static int set_digital_mode(struct echoaudio *chip, u8 mode);
34 static int check_asic_status(struct echoaudio *chip);
35 static int set_sample_rate(struct echoaudio *chip, u32 rate);
36 static int set_input_clock(struct echoaudio *chip, u16 clock);
37 static int set_professional_spdif(struct echoaudio *chip, char prof);
38 static int set_phantom_power(struct echoaudio *chip, char on);
39 static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
40                              char force);
41
42 #include <linux/irq.h>
43
44 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
45 {
46         int err;
47
48         local_irq_enable();
49         DE_INIT(("init_hw() - Echo3G\n"));
50         snd_assert((subdevice_id & 0xfff0) == ECHO3G, return -ENODEV);
51
52         if ((err = init_dsp_comm_page(chip))) {
53                 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
54                 return err;
55         }
56
57         chip->comm_page->e3g_frq_register =
58                 __constant_cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
59         chip->device_id = device_id;
60         chip->subdevice_id = subdevice_id;
61         chip->bad_board = TRUE;
62         chip->has_midi = TRUE;
63         chip->dsp_code_to_load = &card_fw[FW_ECHO3G_DSP];
64
65         /* Load the DSP code and the ASIC on the PCI card and get
66         what type of external box is attached */
67         err = load_firmware(chip);
68
69         if (err < 0) {
70                 return err;
71         } else if (err == E3G_GINA3G_BOX_TYPE) {
72                 chip->input_clock_types =       ECHO_CLOCK_BIT_INTERNAL |
73                                                 ECHO_CLOCK_BIT_SPDIF |
74                                                 ECHO_CLOCK_BIT_ADAT;
75                 chip->card_name = "Gina3G";
76                 chip->px_digital_out = chip->bx_digital_out = 6;
77                 chip->px_analog_in = chip->bx_analog_in = 14;
78                 chip->px_digital_in = chip->bx_digital_in = 16;
79                 chip->px_num = chip->bx_num = 24;
80                 chip->has_phantom_power = TRUE;
81                 chip->hasnt_input_nominal_level = TRUE;
82         } else if (err == E3G_LAYLA3G_BOX_TYPE) {
83                 chip->input_clock_types =       ECHO_CLOCK_BIT_INTERNAL |
84                                                 ECHO_CLOCK_BIT_SPDIF |
85                                                 ECHO_CLOCK_BIT_ADAT |
86                                                 ECHO_CLOCK_BIT_WORD;
87                 chip->card_name = "Layla3G";
88                 chip->px_digital_out = chip->bx_digital_out = 8;
89                 chip->px_analog_in = chip->bx_analog_in = 16;
90                 chip->px_digital_in = chip->bx_digital_in = 24;
91                 chip->px_num = chip->bx_num = 32;
92         } else {
93                 return -ENODEV;
94         }
95
96         chip->digital_modes =   ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
97                                 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
98                                 ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
99         chip->digital_mode =    DIGITAL_MODE_SPDIF_RCA;
100         chip->professional_spdif = FALSE;
101         chip->non_audio_spdif = FALSE;
102         chip->bad_board = FALSE;
103
104         if ((err = init_line_levels(chip)) < 0)
105                 return err;
106         err = set_digital_mode(chip, DIGITAL_MODE_SPDIF_RCA);
107         snd_assert(err >= 0, return err);
108         err = set_phantom_power(chip, 0);
109         snd_assert(err >= 0, return err);
110         err = set_professional_spdif(chip, TRUE);
111
112         DE_INIT(("init_hw done\n"));
113         return err;
114 }
115
116
117
118 static int set_phantom_power(struct echoaudio *chip, char on)
119 {
120         u32 control_reg = le32_to_cpu(chip->comm_page->control_register);
121
122         if (on)
123                 control_reg |= E3G_PHANTOM_POWER;
124         else
125                 control_reg &= ~E3G_PHANTOM_POWER;
126
127         chip->phantom_power = on;
128         return write_control_reg(chip, control_reg,
129                                  le32_to_cpu(chip->comm_page->e3g_frq_register),
130                                  0);
131 }