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/*
* arch/arm/mach-tegra/board-touch-raydium_spi.c
*
* Copyright (c) 2011, NVIDIA Corporation.
* Copyright (c) 2012, Synaptics Inc
*
* 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 program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include "board-touch.h"
#define SYNAPTICS_SPI_CS 0
#define SYNAPTICS_BUTTON_CODES {KEY_HOME, KEY_BACK,}
static unsigned char synaptics_button_codes[] = SYNAPTICS_BUTTON_CODES;
struct rmi_button_map synaptics_button_map = {
.nbuttons = ARRAY_SIZE(synaptics_button_codes),
.map = synaptics_button_codes,
};
int synaptics_touchpad_gpio_setup(void *gpio_data, bool configure)
{
struct synaptics_gpio_data *syna_gpio_data =
(struct synaptics_gpio_data *)gpio_data;
if (!gpio_data)
return -EINVAL;
pr_info("%s: called with configure=%d, SYNAPTICS_ATTN_GPIO=%d\n",
__func__, configure, syna_gpio_data->attn_gpio);
if (configure) {
gpio_request(syna_gpio_data->attn_gpio, "synaptics-irq");
gpio_direction_input(syna_gpio_data->attn_gpio);
gpio_request(syna_gpio_data->reset_gpio, "synaptics-reset");
gpio_direction_output(syna_gpio_data->reset_gpio, 0);
msleep(20);
gpio_set_value(syna_gpio_data->reset_gpio, 1);
msleep(100);
} else {
gpio_free(syna_gpio_data->attn_gpio);
gpio_free(syna_gpio_data->reset_gpio);
}
return 0;
}
int __init touch_init_synaptics(struct spi_board_info *board_info,
int board_info_size)
{
msleep(100);
pr_info("%s: registering synaptics_spi_board\n", __func__);
pr_info(" modalias = %s\n",
board_info->modalias);
pr_info(" bus_num = %d\n",
board_info->bus_num);
pr_info(" chip_select = %d\n",
board_info->chip_select);
pr_info(" irq = %d\n",
board_info->irq);
pr_info(" max_speed_hz = %d\n",
board_info->max_speed_hz);
pr_info(" mode = %d\n",
board_info->mode);
spi_register_board_info(board_info, board_info_size);
return 0;
}
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