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/interrupt.h>
43 
init_hw(struct echoaudio * chip,u16 device_id,u16 subdevice_id)44 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
45 {
46 	int err;
47 
48 	local_irq_enable();
49 	if (snd_BUG_ON((subdevice_id & 0xfff0) != ECHO3G))
50 		return -ENODEV;
51 
52 	err = init_dsp_comm_page(chip);
53 	if (err) {
54 		dev_err(chip->card->dev,
55 			"init_hw - could not initialize DSP comm page\n");
56 		return err;
57 	}
58 
59 	chip->comm_page->e3g_frq_register =
60 		cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
61 	chip->device_id = device_id;
62 	chip->subdevice_id = subdevice_id;
63 	chip->bad_board = true;
64 	chip->has_midi = true;
65 	chip->dsp_code_to_load = FW_ECHO3G_DSP;
66 
67 	/* Load the DSP code and the ASIC on the PCI card and get
68 	what type of external box is attached */
69 	err = load_firmware(chip);
70 
71 	if (err < 0) {
72 		return err;
73 	} else if (err == E3G_GINA3G_BOX_TYPE) {
74 		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
75 						ECHO_CLOCK_BIT_SPDIF |
76 						ECHO_CLOCK_BIT_ADAT;
77 		chip->card_name = "Gina3G";
78 		chip->px_digital_out = chip->bx_digital_out = 6;
79 		chip->px_analog_in = chip->bx_analog_in = 14;
80 		chip->px_digital_in = chip->bx_digital_in = 16;
81 		chip->px_num = chip->bx_num = 24;
82 		chip->has_phantom_power = true;
83 		chip->hasnt_input_nominal_level = true;
84 	} else if (err == E3G_LAYLA3G_BOX_TYPE) {
85 		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
86 						ECHO_CLOCK_BIT_SPDIF |
87 						ECHO_CLOCK_BIT_ADAT |
88 						ECHO_CLOCK_BIT_WORD;
89 		chip->card_name = "Layla3G";
90 		chip->px_digital_out = chip->bx_digital_out = 8;
91 		chip->px_analog_in = chip->bx_analog_in = 16;
92 		chip->px_digital_in = chip->bx_digital_in = 24;
93 		chip->px_num = chip->bx_num = 32;
94 	} else {
95 		return -ENODEV;
96 	}
97 
98 	chip->digital_modes =	ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
99 				ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
100 				ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
101 
102 	return err;
103 }
104 
105 
106 
set_mixer_defaults(struct echoaudio * chip)107 static int set_mixer_defaults(struct echoaudio *chip)
108 {
109 	chip->digital_mode = DIGITAL_MODE_SPDIF_RCA;
110 	chip->professional_spdif = false;
111 	chip->non_audio_spdif = false;
112 	chip->bad_board = false;
113 	chip->phantom_power = false;
114 	return init_line_levels(chip);
115 }
116 
117 
118 
set_phantom_power(struct echoaudio * chip,char on)119 static int set_phantom_power(struct echoaudio *chip, char on)
120 {
121 	u32 control_reg = le32_to_cpu(chip->comm_page->control_register);
122 
123 	if (on)
124 		control_reg |= E3G_PHANTOM_POWER;
125 	else
126 		control_reg &= ~E3G_PHANTOM_POWER;
127 
128 	chip->phantom_power = on;
129 	return write_control_reg(chip, control_reg,
130 				 le32_to_cpu(chip->comm_page->e3g_frq_register),
131 				 0);
132 }
133