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/*
* arch/arm/mach-omap2/board-44xx-tablet-sensors.c
*
* Copyright (C) 2011 Texas Instruments
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/i2c/bma180.h>
#include <linux/i2c/tsl2771.h>
#include <linux/i2c/mpu3050.h>
#include <plat/i2c.h>
#include "board-44xx-tablet.h"
#include "mux.h"
#define OMAP4_BMA180ACCL_GPIO 178
#define OMAP4_TSL2771_INT_GPIO 184
#define OMAP4_TSL2771_PWR_GPIO 188
#define OMAP4_MPU3050GYRO_GPIO 2
/* BMA180 Accelerometer Begin */
static struct bma180accel_platform_data bma180accel_platform_data = {
.ctrl_reg0 = 0x11,
.g_range = BMA_GRANGE_2G,
.bandwidth = BMA_BW_10HZ,
.mode = BMA_MODE_LOW_NOISE,
.bit_mode = BMA_BITMODE_14BITS,
.smp_skip = 1,
.def_poll_rate = 200,
.fuzz_x = 25,
.fuzz_y = 25,
.fuzz_z = 25,
};
static void blaze_tablet_bma180accl_init(void)
{
if (gpio_request(OMAP4_BMA180ACCL_GPIO, "Accelerometer") < 0) {
pr_err("Accelerometer GPIO request failed\n");
return;
}
gpio_direction_input(OMAP4_BMA180ACCL_GPIO);
}
/* BMA180 Accelerometer End */
/* TSL2771 ALS/Prox Begin */
static void omap_tsl2771_power(int state)
{
gpio_set_value(OMAP4_TSL2771_PWR_GPIO, state);
}
static void blaze_tablet_tsl2771_init(void)
{
/* TO DO: Not sure what the use case of the proximity is on a tablet
* but the interrupt may need to be wakeable if and only if proximity
* is enabled but for now leave it alone */
gpio_request(OMAP4_TSL2771_PWR_GPIO, "tsl2771_power");
gpio_direction_output(OMAP4_TSL2771_PWR_GPIO, 0);
gpio_request(OMAP4_TSL2771_INT_GPIO, "tsl2771_interrupt");
gpio_direction_input(OMAP4_TSL2771_INT_GPIO);
}
/* TO DO: Need to create a interrupt threshold table here */
struct tsl2771_platform_data tsl2771_data = {
.irq_flags = (IRQF_TRIGGER_LOW | IRQF_ONESHOT),
.flags = (TSL2771_USE_ALS | TSL2771_USE_PROX),
.def_enable = 0x0,
.als_adc_time = 0xdb,
.prox_adc_time = 0xff,
.wait_time = 0x00,
.als_low_thresh_low_byte = 0x0,
.als_low_thresh_high_byte = 0x0,
.als_high_thresh_low_byte = 0x0,
.als_high_thresh_high_byte = 0x0,
.prox_low_thresh_low_byte = 0x0,
.prox_low_thresh_high_byte = 0x0,
.prox_high_thresh_low_byte = 0x0,
.prox_high_thresh_high_byte = 0x0,
.interrupt_persistence = 0xf6,
.config = 0x00,
.prox_pulse_count = 0x03,
.gain_control = 0xE0,
.glass_attn = 0x01,
.device_factor = 0x34,
.tsl2771_pwr_control = omap_tsl2771_power,
};
/* TSL2771 ALS/Prox End */
/* MPU3050 Gyro Begin */
static void blaze_tablet_mpu3050_init(void)
{
if (gpio_request(OMAP4_MPU3050GYRO_GPIO, "mpu3050") < 0) {
pr_err("%s: MPU3050 GPIO request failed\n", __func__);
return;
}
gpio_direction_input(OMAP4_MPU3050GYRO_GPIO);
}
static struct mpu3050gyro_platform_data mpu3050_platform_data = {
.irq_flags = (IRQF_TRIGGER_HIGH | IRQF_ONESHOT),
.default_poll_rate = 200,
.slave_i2c_addr = 0x40,
.sample_rate_div = 0x00,
.dlpf_fs_sync = 0x10,
.interrupt_cfg = (MPU3050_INT_CFG_OPEN | MPU3050_INT_CFG_LATCH_INT_EN |
MPU3050_INT_CFG_MPU_RDY_EN | MPU3050_INT_CFG_RAW_RDY_EN),
};
/* MPU3050 Gyro End */
static struct i2c_board_info __initdata blaze_tablet_i2c_bus3_sensor_info[] = {
{
I2C_BOARD_INFO("tmp105", 0x48),
},
};
static struct i2c_board_info __initdata blaze_tablet_i2c_bus4_sensor_info[] = {
{
I2C_BOARD_INFO("bmp085", 0x77),
},
{
I2C_BOARD_INFO("hmc5843", 0x1e),
},
{
I2C_BOARD_INFO("bma180_accel", 0x40),
.platform_data = &bma180accel_platform_data,
},
{
I2C_BOARD_INFO("mpu3050_gyro", 0x68),
.platform_data = &mpu3050_platform_data,
},
{
I2C_BOARD_INFO(TSL2771_NAME, 0x39),
.platform_data = &tsl2771_data,
.irq = OMAP_GPIO_IRQ(OMAP4_TSL2771_INT_GPIO),
},
};
int __init tablet_sensor_init(void)
{
blaze_tablet_tsl2771_init();
blaze_tablet_mpu3050_init();
blaze_tablet_bma180accl_init();
i2c_register_board_info(3, blaze_tablet_i2c_bus3_sensor_info,
ARRAY_SIZE(blaze_tablet_i2c_bus3_sensor_info));
i2c_register_board_info(4, blaze_tablet_i2c_bus4_sensor_info,
ARRAY_SIZE(blaze_tablet_i2c_bus4_sensor_info));
return 0;
}
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