diff options
Diffstat (limited to 'firmware/target/hosted/sonynwz/radio-nwz.c')
-rw-r--r-- | firmware/target/hosted/sonynwz/radio-nwz.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/firmware/target/hosted/sonynwz/radio-nwz.c b/firmware/target/hosted/sonynwz/radio-nwz.c new file mode 100644 index 0000000000..db4ffda465 --- /dev/null +++ b/firmware/target/hosted/sonynwz/radio-nwz.c | |||
@@ -0,0 +1,110 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * | ||
9 | * Copyright (C) 2017 Amaury Pouly | ||
10 | * | ||
11 | * This program is free software; you can redistribute it and/or | ||
12 | * modify it under the terms of the GNU General Public License | ||
13 | * as published by the Free Software Foundation; either version 2 | ||
14 | * of the License, or (at your option) any later version. | ||
15 | * | ||
16 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
17 | * KIND, either express or implied. | ||
18 | * | ||
19 | ****************************************************************************/ | ||
20 | |||
21 | #include <unistd.h> | ||
22 | #include <fcntl.h> | ||
23 | #include <sys/ioctl.h> | ||
24 | #include <sys/stat.h> | ||
25 | #include "stdint.h" | ||
26 | #include "stdio.h" | ||
27 | #include "string.h" | ||
28 | #include "kernel.h" | ||
29 | #include "rbendian.h" | ||
30 | |||
31 | #include "nwz_tuner.h" | ||
32 | #include "si4700.h" | ||
33 | #include "power.h" | ||
34 | |||
35 | static int radio_fd = -1; | ||
36 | |||
37 | bool tuner_power(bool status) | ||
38 | { | ||
39 | if(status != tuner_powered()) | ||
40 | { | ||
41 | if(status) | ||
42 | { | ||
43 | radio_fd = open(NWZ_TUNER_DEV, 0); | ||
44 | if(radio_fd != -1) | ||
45 | { | ||
46 | /* Sony is braindead, opening the radio device mutes all audio (even from the DAC) | ||
47 | * until SET_FREQ is called with a valid frequency, choose 90MHz because it is valid | ||
48 | * in all bands */ | ||
49 | struct nwz_tuner_ioctl_t req; | ||
50 | memset(&req, 0, sizeof(req)); // just to avoid garbage in | ||
51 | req.freq = 90000; | ||
52 | int ret = ioctl(radio_fd, NWZ_TUNER_SET_FREQ, &req); | ||
53 | if(ret != 0) | ||
54 | perror("tuner set_freq error"); | ||
55 | } | ||
56 | else | ||
57 | perror("tuner open error"); | ||
58 | } | ||
59 | else | ||
60 | { | ||
61 | close(radio_fd); | ||
62 | radio_fd = -1; | ||
63 | } | ||
64 | } | ||
65 | return tuner_powered(); | ||
66 | } | ||
67 | |||
68 | bool tuner_powered(void) | ||
69 | { | ||
70 | return radio_fd != -1; | ||
71 | } | ||
72 | |||
73 | /* one can adjust the following depending on the tuner, for now it is calibrated for the si470x | ||
74 | * which is crazy, because it starts reading at register 0xA and writing at 0x2. We need to | ||
75 | * "emulate" this behavior... Note that Si470x transmits in big-endian */ | ||
76 | #define READ_START_REG 0xA | ||
77 | #define WRITE_START_REG 0x2 | ||
78 | #define REG_COUNT 16 | ||
79 | #define REG_SIZE 2 | ||
80 | #define REG_TYPE uint16_t | ||
81 | #define REG_SWAP swap16 | ||
82 | |||
83 | int fmradio_i2c_write(unsigned char address, unsigned char* buf, int count) | ||
84 | { | ||
85 | (void)address; | ||
86 | struct nwz_tuner_ioctl_t req; | ||
87 | memset(&req, 0, sizeof(req)); // just to avoid garbage in | ||
88 | for(int i = 0; i < count / REG_SIZE; i++) | ||
89 | { | ||
90 | req.put.regno = (WRITE_START_REG + i) % REG_COUNT; | ||
91 | req.put.val = REG_SWAP(*(REG_TYPE *)&buf[i * REG_SIZE]); | ||
92 | int ret = ioctl(radio_fd, NWZ_TUNER_PUT_REG, &req); | ||
93 | if(ret != 0) | ||
94 | return ret; | ||
95 | } | ||
96 | return 0; | ||
97 | } | ||
98 | |||
99 | int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count) | ||
100 | { | ||
101 | (void)address; | ||
102 | struct nwz_tuner_ioctl_t req; | ||
103 | memset(&req, 0, sizeof(req)); // just to avoid garbage in | ||
104 | int ret = ioctl(radio_fd, NWZ_TUNER_GET_REG_ALL, &req); | ||
105 | if(ret != 0) | ||
106 | return ret; | ||
107 | for(int i = 0; i < count / REG_SIZE; i++) | ||
108 | *(REG_TYPE *)&buf[i * REG_SIZE] = REG_SWAP(req.regs[(READ_START_REG + i) % REG_COUNT]); | ||
109 | return 0; | ||
110 | } | ||