Samsung YP-R0/YP-R1: use Linux i2c-dev for radio chip access

Linux offers the high-level i2c-dev driver to directly access the
i2c bus(ses) on the system. This system device is used to get rid
of the (rather silly) radio chip kernel module for ypr0 target and
correctly enables radio access also for the ypr1 target.
fm-radio chip is located on i2c-0 bus on the ypr0 target while it
is located on i2c-1 bus on the ypr1 target.
Power-up (RST) pin is also handled for both targets, which is wired
to another GPIO of the i.MX 37 platform.
Additionally, this patch simplifies the RDS low-level handling by
exploiting the Si4709 debug interface which comes with a mutex
protection as free bonus.

Change-Id: I839282bec4a27ad0ad8403c5a8dd86963b77e1bf

1 files changed, 0 insertions, 82 deletions

diff --git a/firmware/target/hosted/samsungypr/si4709.h b/firmware/target/hosted/samsungypr/si4709.h
deleted file mode 100644
index c27472e856..0000000000
--- a/firmware/target/hosted/samsungypr/si4709.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- *
- * Module header 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.
- *
- ****************************************************************************/
-
-#ifndef __SI4709_H__
-#define __SI4709_H__
-
-#include "stdint.h"
-
-/* 7bits I2C address */
-#define SI4709_I2C_SLAVE_ADDR       0x10
-
-#define SI4702_DEVICEID     0x00
-#define SI4702_CHIPID       0x01
-#define SI4702_POWERCFG     0x02
-#define SI4702_CHANNEL      0x03
-#define SI4702_SYSCONFIG1   0x04
-#define SI4702_SYSCONFIG2   0x05
-#define SI4702_SYSCONFIG3   0x06
-#define SI4702_TEST1        0x07
-#define SI4702_TEST2        0x08
-#define SI4702_B00TCONFIG   0x09
-#define SI4702_STATUSRSSI   0x0A
-#define SI4702_READCHAN     0x0B
-#define SI4709_REG_NUM      0x10
-#define SI4702_REG_BYTE     (SI4709_REG_NUM * 2)
-#define SI4702_DEVICE_ID    0x1242
-#define SI4702_RW_REG_NUM   (SI4702_STATUSRSSI - SI4702_POWERCFG)
-#define SI4702_RW_OFFSET    \
-    (SI4709_REG_NUM - SI4702_STATUSRSSI + SI4702_POWERCFG)
-#define BYTE_TO_WORD(hi, lo)    (((hi) << 8) & 0xFF00) | ((lo) & 0x00FF)
-
-typedef struct {
-    int addr;
-    uint16_t value;
-}__attribute__((packed)) sSi4709_t;
-
-typedef struct {
-    int size;
-    unsigned char *buf;
-}__attribute__((packed)) sSi4709_i2c_t;
-
-typedef enum
-{
-    IOCTL_SI4709_INIT = 0,
-    IOCTL_SI4709_CLOSE,
-    IOCTL_SI4709_WRITE_BYTE,
-    IOCTL_SI4709_READ_BYTE,
-    IOCTL_SI4709_I2C_WRITE,
-    IOCTL_SI4709_I2C_READ,
-
-    E_IOCTL_SI4709_MAX
-} eSi4709_ioctl_t;
-
-#define DRV_IOCTL_SI4709_MAGIC     'S'
-
-#define IOCTL_SI4709_INIT          _IO(DRV_IOCTL_SI4709_MAGIC, IOCTL_SI4709_INIT)
-#define IOCTL_SI4709_CLOSE         _IO(DRV_IOCTL_SI4709_MAGIC, IOCTL_SI4709_CLOSE)
-#define IOCTL_SI4709_WRITE_BYTE    _IOW(DRV_IOCTL_SI4709_MAGIC, IOCTL_SI4709_WRITE_BYTE, sSi4709_t)
-#define IOCTL_SI4709_READ_BYTE     _IOR(DRV_IOCTL_SI4709_MAGIC, IOCTL_SI4709_READ_BYTE, sSi4709_t)
-#define IOCTL_SI4709_I2C_WRITE     _IOW(DRV_IOCTL_SI4709_MAGIC, IOCTL_SI4709_I2C_WRITE, sSi4709_i2c_t)
-#define IOCTL_SI4709_I2C_READ      _IOR(DRV_IOCTL_SI4709_MAGIC, IOCTL_SI4709_I2C_READ, sSi4709_i2c_t)
-
-#endif /* __SI4709_H__ */
\ No newline at end of file