1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * helper functions for HDMI models (Xonar HDAV1.3/HDAV1.3 Slim) |
4 | * |
5 | * Copyright (c) Clemens Ladisch <clemens@ladisch.de> |
6 | */ |
7 | |
8 | #include <linux/pci.h> |
9 | #include <linux/delay.h> |
10 | #include <sound/asoundef.h> |
11 | #include <sound/control.h> |
12 | #include <sound/core.h> |
13 | #include <sound/pcm.h> |
14 | #include <sound/pcm_params.h> |
15 | #include <sound/tlv.h> |
16 | #include "xonar.h" |
17 | |
18 | static void hdmi_write_command(struct oxygen *chip, u8 command, |
19 | unsigned int count, const u8 *params) |
20 | { |
21 | unsigned int i; |
22 | u8 checksum; |
23 | |
24 | oxygen_write_uart(chip, data: 0xfb); |
25 | oxygen_write_uart(chip, data: 0xef); |
26 | oxygen_write_uart(chip, data: command); |
27 | oxygen_write_uart(chip, data: count); |
28 | for (i = 0; i < count; ++i) |
29 | oxygen_write_uart(chip, data: params[i]); |
30 | checksum = 0xfb + 0xef + command + count; |
31 | for (i = 0; i < count; ++i) |
32 | checksum += params[i]; |
33 | oxygen_write_uart(chip, data: checksum); |
34 | } |
35 | |
36 | static void xonar_hdmi_init_commands(struct oxygen *chip, |
37 | struct xonar_hdmi *hdmi) |
38 | { |
39 | u8 param; |
40 | |
41 | oxygen_reset_uart(chip); |
42 | param = 0; |
43 | hdmi_write_command(chip, command: 0x61, count: 1, params: ¶m); |
44 | param = 1; |
45 | hdmi_write_command(chip, command: 0x74, count: 1, params: ¶m); |
46 | hdmi_write_command(chip, command: 0x54, count: 5, params: hdmi->params); |
47 | } |
48 | |
49 | void xonar_hdmi_init(struct oxygen *chip, struct xonar_hdmi *hdmi) |
50 | { |
51 | hdmi->params[1] = IEC958_AES3_CON_FS_48000; |
52 | hdmi->params[4] = 1; |
53 | xonar_hdmi_init_commands(chip, hdmi); |
54 | } |
55 | |
56 | void xonar_hdmi_cleanup(struct oxygen *chip) |
57 | { |
58 | u8 param = 0; |
59 | |
60 | hdmi_write_command(chip, command: 0x74, count: 1, params: ¶m); |
61 | } |
62 | |
63 | void xonar_hdmi_resume(struct oxygen *chip, struct xonar_hdmi *hdmi) |
64 | { |
65 | xonar_hdmi_init_commands(chip, hdmi); |
66 | } |
67 | |
68 | void xonar_hdmi_pcm_hardware_filter(unsigned int channel, |
69 | struct snd_pcm_hardware *hardware) |
70 | { |
71 | if (channel == PCM_MULTICH) { |
72 | hardware->rates = SNDRV_PCM_RATE_44100 | |
73 | SNDRV_PCM_RATE_48000 | |
74 | SNDRV_PCM_RATE_96000 | |
75 | SNDRV_PCM_RATE_192000; |
76 | hardware->rate_min = 44100; |
77 | } |
78 | } |
79 | |
80 | void xonar_set_hdmi_params(struct oxygen *chip, struct xonar_hdmi *hdmi, |
81 | struct snd_pcm_hw_params *params) |
82 | { |
83 | hdmi->params[0] = 0; /* 1 = non-audio */ |
84 | switch (params_rate(p: params)) { |
85 | case 44100: |
86 | hdmi->params[1] = IEC958_AES3_CON_FS_44100; |
87 | break; |
88 | case 48000: |
89 | hdmi->params[1] = IEC958_AES3_CON_FS_48000; |
90 | break; |
91 | default: /* 96000 */ |
92 | hdmi->params[1] = IEC958_AES3_CON_FS_96000; |
93 | break; |
94 | case 192000: |
95 | hdmi->params[1] = IEC958_AES3_CON_FS_192000; |
96 | break; |
97 | } |
98 | hdmi->params[2] = params_channels(p: params) / 2 - 1; |
99 | if (params_format(p: params) == SNDRV_PCM_FORMAT_S16_LE) |
100 | hdmi->params[3] = 0; |
101 | else |
102 | hdmi->params[3] = 0xc0; |
103 | hdmi->params[4] = 1; /* ? */ |
104 | hdmi_write_command(chip, command: 0x54, count: 5, params: hdmi->params); |
105 | } |
106 | |
107 | void xonar_hdmi_uart_input(struct oxygen *chip) |
108 | { |
109 | if (chip->uart_input_count >= 2 && |
110 | chip->uart_input[chip->uart_input_count - 2] == 'O' && |
111 | chip->uart_input[chip->uart_input_count - 1] == 'K') { |
112 | dev_dbg(chip->card->dev, "message from HDMI chip received:\n" ); |
113 | print_hex_dump_bytes("" , DUMP_PREFIX_OFFSET, |
114 | chip->uart_input, chip->uart_input_count); |
115 | chip->uart_input_count = 0; |
116 | } |
117 | } |
118 | |