86e8c28330
Since the bootloader currently always fails at storage point (unimplemented), always enter touchpad debug screen and power off which pressing power button. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29859 a1c6a512-1295-4272-9138-f99709370657
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2011 by Amaury Pouly
|
|
*
|
|
* 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 "system.h"
|
|
#include "generic_i2c.h"
|
|
#include "synaptics-rmi.h"
|
|
|
|
static int rmi_cur_page;
|
|
static int rmi_i2c_addr;
|
|
static int rmi_i2c_bus;
|
|
|
|
/* NOTE:
|
|
* RMI over i2c supports some special aliases on page 0x2 but this driver don't
|
|
* use them */
|
|
|
|
int rmi_init(int i2c_bus_index, int i2c_dev_addr)
|
|
{
|
|
rmi_i2c_bus = i2c_bus_index;
|
|
rmi_i2c_addr = i2c_dev_addr;
|
|
rmi_cur_page = 0x4;
|
|
return 0;
|
|
}
|
|
|
|
static int rmi_select_page(unsigned char page)
|
|
{
|
|
/* Lazy page select */
|
|
if(page != rmi_cur_page)
|
|
{
|
|
rmi_cur_page = page;
|
|
return i2c_write_data(rmi_i2c_bus, rmi_i2c_addr, RMI_PAGE_SELECT, &page, 1);
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
int rmi_read(int address, int byte_count, unsigned char *buffer)
|
|
{
|
|
if(rmi_select_page(address >> 8) < 0)
|
|
return -1;
|
|
return i2c_read_data(rmi_i2c_bus, rmi_i2c_addr, address & 0xff, buffer, byte_count);
|
|
}
|
|
|
|
int rmi_read_single(int address)
|
|
{
|
|
unsigned char c;
|
|
int ret = rmi_read(address, 1, &c);
|
|
return ret < 0 ? ret : c;
|
|
}
|
|
|
|
int rmi_write(int address, int byte_count, const unsigned char *buffer)
|
|
{
|
|
if(rmi_select_page(address >> 8) < 0)
|
|
return -1;
|
|
return i2c_write_data(rmi_i2c_bus, rmi_i2c_addr, address & 0xff, buffer, byte_count);
|
|
}
|
|
|
|
int rmi_write_single(int address, unsigned char byte)
|
|
{
|
|
return rmi_write(address, 1, &byte);
|
|
}
|