rockbox/firmware/target/arm/imx233/sansa-fuzeplus/button-fuzeplus.c

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/***************************************************************************
* __________ __ ___.
* 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 "button-target.h"
#include "system.h"
#include "system-target.h"
#include "pinctrl-imx233.h"
#include "generic_i2c.h"
#include "synaptics-rmi.h"
#include "lcd.h"
static void i2c_scl_dir(bool out)
{
imx233_enable_gpio_output(0, 30, out);
}
static void i2c_sda_dir(bool out)
{
imx233_enable_gpio_output(0, 31, out);
}
static void i2c_scl_out(bool high)
{
imx233_set_gpio_output(0, 30, high);
}
static void i2c_sda_out(bool high)
{
imx233_set_gpio_output(0, 31, high);
}
static bool i2c_scl_in(void)
{
return imx233_get_gpio_input_mask(0, 1 << 30);
}
static bool i2c_sda_in(void)
{
return imx233_get_gpio_input_mask(0, 1 << 31);
}
static void i2c_delay(int d)
{
udelay(d);
}
struct i2c_interface btn_i2c =
{
.scl_dir = i2c_scl_dir,
.sda_dir = i2c_sda_dir,
.scl_out = i2c_scl_out,
.sda_out = i2c_sda_out,
.scl_in = i2c_scl_in,
.sda_in = i2c_sda_in,
.delay = i2c_delay,
.delay_hd_sta = 4,
.delay_hd_dat = 5,
.delay_su_dat = 1,
.delay_su_sto = 4,
.delay_su_sta = 5,
.delay_thigh = 4
};
int rmi_i2c_bus = -1;
void button_debug_screen(void)
{
char product_id[RMI_PRODUCT_ID_LEN];
rmi_read(RMI_PRODUCT_ID, RMI_PRODUCT_ID_LEN, product_id);
while(1)
{
lcd_clear_display();
int btns = button_read_device();
lcd_putsf(0, 0, "button bitmap: %x", btns);
lcd_putsf(0, 1, "RMI: product=%s", product_id);
lcd_putsf(0, 2, "touchpad presence: %x", rmi_read_single(RMI_FUNCTION_PRESENCE(RMI_2D_TOUCHPAD_FUNCTION)));
lcd_putsf(0, 3, "sensor prop: %x", rmi_read_single(RMI_2D_SENSOR_PROP2(0)));
int x_max = rmi_read_single(RMI_2D_SENSOR_XMAX_MSB(0)) << 8 | rmi_read_single(RMI_2D_SENSOR_XMAX_LSB(0));
int y_max = rmi_read_single(RMI_2D_SENSOR_YMAX_MSB(0)) << 8 | rmi_read_single(RMI_2D_SENSOR_YMAX_LSB(0));
lcd_putsf(0, 4, "xmax=%d ymax=%d res=%d", x_max, y_max,
rmi_read_single(RMI_2D_SENSOR_RESOLUTION(0)));
lcd_putsf(0, 5, "din0=%x", imx233_get_gpio_input_mask(0, 0x08000000));
lcd_putsf(0, 6, "dev ctl: %x", rmi_read_single(RMI_DEVICE_CONTROL));
lcd_putsf(0, 7, "int en: %x", rmi_read_single(RMI_INTERRUPT_ENABLE));
lcd_putsf(0, 8, "int req: %x", rmi_read_single(RMI_INTERRUPT_REQUEST));
union
{
unsigned char data[10];
struct
{
unsigned char absolute_misc;
unsigned char absolute_z;
unsigned char absolute_x_msb;
unsigned char absolute_x_lsb;
unsigned char absolute_y_msb;
unsigned char absolute_y_lsb;
signed char relative_x; /* signed */
signed char relative_y; /* signed */
unsigned char gesture_misc;
unsigned char gesture_flick;
} __attribute__((packed)) s;
}u;
int absolute_x = u.s.absolute_x_msb << 8 | u.s.absolute_x_lsb;
int absolute_y = u.s.absolute_y_msb << 8 | u.s.absolute_y_lsb;
rmi_read(RMI_DATA_REGISTER(0), 10, u.data);
lcd_putsf(0, 9, "abs: %d %d", absolute_x, absolute_y);
lcd_putsf(0, 10, "rel: %d %d", (int)u.s.relative_x, (int)u.s.relative_y);
lcd_putsf(0, 11, "gesture: %x %x", u.s.gesture_misc, u.s.gesture_flick);
lcd_update();
if(btns & BUTTON_POWER)
break;
yield();
}
}
void button_init_device(void)
{
rmi_i2c_bus = i2c_add_node(&btn_i2c);
rmi_init(rmi_i2c_bus, 0x40);
/* Synaptics TouchPad information:
* - product id: 1533
* - nr function: 1 (0x10 = 2D touchpad)
* 2D Touchpad information (function 0x10)
* - nr data sources: 3
* - standard layout
* - extra data registers: 7
* - nr sensors: 1
* 2D Touchpad Sensor #0 information:
* - has relative data: yes
* - has palm detect: yes
* - has multi finger: yes
* - has enhanced gesture: yes
* - has scroller: no
* - has 2D scrollers: no
* - Maximum X: 3009
* - Maxumum Y: 1974
* - Resolution: 82
*
* ATTENTION line: B0P27 asserted low
*/
}
int button_read_device(void)
{
int res = 0;
if(!imx233_get_gpio_input_mask(1, 0x40000000))
res |= BUTTON_VOL_DOWN;
/* The imx233 uses the voltage on the PSWITCH pin to detect power up/down
* events as well as recovery mode. Since the power button is the power button
* and the volume up button is recovery, it is not possible to know whether
* power button is down when volume up is down (except if there is another
* method but volume up and power don't seem to be wired to GPIO pins). */
switch((HW_POWER_STS & HW_POWER_STS__PSWITCH_BM) >> HW_POWER_STS__PSWITCH_BP)
{
case 1: res |= BUTTON_POWER; break;
case 3: res |= BUTTON_VOL_UP; break;
default: break;
}
return res;
}