diff options
Diffstat (limited to 'firmware/target/hosted/ypr0/radio-ypr0.c')
-rw-r--r-- | firmware/target/hosted/ypr0/radio-ypr0.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/firmware/target/hosted/ypr0/radio-ypr0.c b/firmware/target/hosted/ypr0/radio-ypr0.c new file mode 100644 index 0000000000..c3597bd18c --- /dev/null +++ b/firmware/target/hosted/ypr0/radio-ypr0.c | |||
@@ -0,0 +1,66 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * | ||
9 | * Module wrapper for SI4709 FM Radio Chip, using /dev/si470x (si4709.ko) of Samsung YP-R0 | ||
10 | * | ||
11 | * Copyright (c) 2012 Lorenzo Miori | ||
12 | * | ||
13 | * This program is free software; you can redistribute it and/or | ||
14 | * modify it under the terms of the GNU General Public License | ||
15 | * as published by the Free Software Foundation; either version 2 | ||
16 | * of the License, or (at your option) any later version. | ||
17 | * | ||
18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
19 | * KIND, either express or implied. | ||
20 | * | ||
21 | ****************************************************************************/ | ||
22 | |||
23 | #include <unistd.h> | ||
24 | #include <fcntl.h> | ||
25 | #include <sys/ioctl.h> | ||
26 | #include "stdint.h" | ||
27 | #include "string.h" | ||
28 | |||
29 | #include "radio-ypr0.h" | ||
30 | |||
31 | static int radio_dev = -1; | ||
32 | |||
33 | void radiodev_open(void) { | ||
34 | radio_dev = open("/dev/si470x", O_RDWR); | ||
35 | } | ||
36 | |||
37 | void radiodev_close(void) { | ||
38 | close(radio_dev); | ||
39 | } | ||
40 | |||
41 | /* High-level registers access */ | ||
42 | void si4709_write_reg(int addr, uint16_t value) { | ||
43 | sSi4709_t r = { .addr = addr, .value = value }; | ||
44 | ioctl(radio_dev, IOCTL_SI4709_WRITE_BYTE, &r); | ||
45 | } | ||
46 | |||
47 | uint16_t si4709_read_reg(int addr) { | ||
48 | sSi4709_t r = { .addr = addr, .value = 0 }; | ||
49 | ioctl(radio_dev, IOCTL_SI4709_READ_BYTE, &r); | ||
50 | return r.value; | ||
51 | } | ||
52 | |||
53 | /* Low-level i2c channel access */ | ||
54 | int fmradio_i2c_write(unsigned char address, unsigned char* buf, int count) | ||
55 | { | ||
56 | (void)address; | ||
57 | sSi4709_i2c_t r = { .size = count, .buf = buf }; | ||
58 | return ioctl(radio_dev, IOCTL_SI4709_I2C_WRITE, &r); | ||
59 | } | ||
60 | |||
61 | int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count) | ||
62 | { | ||
63 | (void)address; | ||
64 | sSi4709_i2c_t r = { .size = count, .buf = buf }; | ||
65 | return ioctl(radio_dev, IOCTL_SI4709_I2C_READ, &r); | ||
66 | } \ No newline at end of file | ||