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 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Module wrapper for SI4709 FM Radio Chip, using /dev/si470x (si4709.ko) of Samsung YP-R0
+ *
+ * Copyright (c) 2012 Lorenzo Miori
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include "stdint.h"
+#include "string.h"
+
+#include "radio-ypr0.h"
+
+static int radio_dev = -1;
+
+void radiodev_open(void) {
+    radio_dev = open("/dev/si470x", O_RDWR);
+}
+
+void radiodev_close(void) {
+    close(radio_dev);
+}
+
+/* High-level registers access */
+void si4709_write_reg(int addr, uint16_t value) {
+    sSi4709_t r = { .addr = addr, .value = value };
+    ioctl(radio_dev, IOCTL_SI4709_WRITE_BYTE, &r);
+}
+
+uint16_t si4709_read_reg(int addr) {
+    sSi4709_t r = { .addr = addr, .value = 0 };
+    ioctl(radio_dev, IOCTL_SI4709_READ_BYTE, &r);
+    return r.value;
+}
+
+/* Low-level i2c channel access */
+int fmradio_i2c_write(unsigned char address, unsigned char* buf, int count)
+{
+    (void)address;
+    sSi4709_i2c_t r = { .size = count, .buf = buf };
+    return ioctl(radio_dev, IOCTL_SI4709_I2C_WRITE, &r);
+}
+
+int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
+{
+    (void)address;
+    sSi4709_i2c_t r = { .size = count, .buf = buf };
+    return ioctl(radio_dev, IOCTL_SI4709_I2C_READ, &r);
+}
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