Commit | Line | Data |
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65c3ac88 | 1 | /* |
b532d6b8 | 2 | * helper functions for HDMI models (Xonar HDAV1.3/HDAV1.3 Slim) |
65c3ac88 CL |
3 | * |
4 | * Copyright (c) Clemens Ladisch <clemens@ladisch.de> | |
5 | * | |
6 | * | |
7 | * This driver is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License, version 2. | |
9 | * | |
10 | * This driver is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this driver; if not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <linux/pci.h> | |
20 | #include <linux/delay.h> | |
21 | #include <sound/asoundef.h> | |
22 | #include <sound/control.h> | |
23 | #include <sound/core.h> | |
24 | #include <sound/pcm.h> | |
25 | #include <sound/pcm_params.h> | |
26 | #include <sound/tlv.h> | |
27 | #include "xonar.h" | |
28 | ||
29 | static void hdmi_write_command(struct oxygen *chip, u8 command, | |
30 | unsigned int count, const u8 *params) | |
31 | { | |
32 | unsigned int i; | |
33 | u8 checksum; | |
34 | ||
35 | oxygen_write_uart(chip, 0xfb); | |
36 | oxygen_write_uart(chip, 0xef); | |
37 | oxygen_write_uart(chip, command); | |
38 | oxygen_write_uart(chip, count); | |
39 | for (i = 0; i < count; ++i) | |
40 | oxygen_write_uart(chip, params[i]); | |
41 | checksum = 0xfb + 0xef + command + count; | |
42 | for (i = 0; i < count; ++i) | |
43 | checksum += params[i]; | |
44 | oxygen_write_uart(chip, checksum); | |
45 | } | |
46 | ||
47 | static void xonar_hdmi_init_commands(struct oxygen *chip, | |
48 | struct xonar_hdmi *hdmi) | |
49 | { | |
50 | u8 param; | |
51 | ||
52 | oxygen_reset_uart(chip); | |
53 | param = 0; | |
54 | hdmi_write_command(chip, 0x61, 1, ¶m); | |
55 | param = 1; | |
56 | hdmi_write_command(chip, 0x74, 1, ¶m); | |
57 | hdmi_write_command(chip, 0x54, 5, hdmi->params); | |
58 | } | |
59 | ||
60 | void xonar_hdmi_init(struct oxygen *chip, struct xonar_hdmi *hdmi) | |
61 | { | |
62 | hdmi->params[1] = IEC958_AES3_CON_FS_48000; | |
63 | hdmi->params[4] = 1; | |
64 | xonar_hdmi_init_commands(chip, hdmi); | |
65 | } | |
66 | ||
67 | void xonar_hdmi_cleanup(struct oxygen *chip) | |
68 | { | |
69 | u8 param = 0; | |
70 | ||
71 | hdmi_write_command(chip, 0x74, 1, ¶m); | |
72 | } | |
73 | ||
74 | void xonar_hdmi_resume(struct oxygen *chip, struct xonar_hdmi *hdmi) | |
75 | { | |
76 | xonar_hdmi_init_commands(chip, hdmi); | |
77 | } | |
78 | ||
79 | void xonar_hdmi_pcm_hardware_filter(unsigned int channel, | |
80 | struct snd_pcm_hardware *hardware) | |
81 | { | |
82 | if (channel == PCM_MULTICH) { | |
83 | hardware->rates = SNDRV_PCM_RATE_44100 | | |
84 | SNDRV_PCM_RATE_48000 | | |
85 | SNDRV_PCM_RATE_96000 | | |
86 | SNDRV_PCM_RATE_192000; | |
87 | hardware->rate_min = 44100; | |
88 | } | |
89 | } | |
90 | ||
91 | void xonar_set_hdmi_params(struct oxygen *chip, struct xonar_hdmi *hdmi, | |
92 | struct snd_pcm_hw_params *params) | |
93 | { | |
94 | hdmi->params[0] = 0; /* 1 = non-audio */ | |
95 | switch (params_rate(params)) { | |
96 | case 44100: | |
97 | hdmi->params[1] = IEC958_AES3_CON_FS_44100; | |
98 | break; | |
99 | case 48000: | |
100 | hdmi->params[1] = IEC958_AES3_CON_FS_48000; | |
101 | break; | |
102 | default: /* 96000 */ | |
103 | hdmi->params[1] = IEC958_AES3_CON_FS_96000; | |
104 | break; | |
105 | case 192000: | |
106 | hdmi->params[1] = IEC958_AES3_CON_FS_192000; | |
107 | break; | |
108 | } | |
109 | hdmi->params[2] = params_channels(params) / 2 - 1; | |
110 | if (params_format(params) == SNDRV_PCM_FORMAT_S16_LE) | |
111 | hdmi->params[3] = 0; | |
112 | else | |
113 | hdmi->params[3] = 0xc0; | |
114 | hdmi->params[4] = 1; /* ? */ | |
115 | hdmi_write_command(chip, 0x54, 5, hdmi->params); | |
116 | } | |
117 | ||
118 | void xonar_hdmi_uart_input(struct oxygen *chip) | |
119 | { | |
120 | if (chip->uart_input_count >= 2 && | |
121 | chip->uart_input[chip->uart_input_count - 2] == 'O' && | |
122 | chip->uart_input[chip->uart_input_count - 1] == 'K') { | |
123 | printk(KERN_DEBUG "message from HDMI chip received:\n"); | |
124 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, | |
125 | chip->uart_input, chip->uart_input_count); | |
126 | chip->uart_input_count = 0; | |
127 | } | |
128 | } |