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/* Sensor support for Samsung Tuna Board.
*
* Copyright (C) 2011 Google, Inc.
*
* 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/i2c.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include "mux.h"
#include <linux/gp2a.h>
#include <linux/i2c/twl6030-gpadc.h>
#include <linux/regulator/consumer.h>
#include <linux/bh1721fvc.h>
#include <linux/yas.h>
#include <linux/al3201.h>
#include "board-espresso.h"
#define GPIO_ALS_INT 33
#define GPIO_PS_VOUT 1
#define GPIO_MSENSE_IRQ 157
#define GP2A_LIGHT_ADC_CHANNEL 4
#define YAS_TA_OFFSET_ESPRESSO {0, 0, 0}
#define YAS_USB_OFFSET_ESPRESSO {0, 0, 0}
#define YAS_TA_OFFSET_ESPRESSO10 {200, -4600, -1100}
#define YAS_USB_OFFSET_ESPRESSO10 {0, -1100, -300}
#define YAS_FULL_OFFSET {0, 0, 0}
static int bh1721fvc_light_sensor_reset(void)
{
pr_debug("%s\n", __func__);
omap_mux_init_gpio(GPIO_ALS_INT, OMAP_PIN_OUTPUT);
gpio_free(GPIO_ALS_INT);
gpio_request(GPIO_ALS_INT, "LIGHT_SENSOR_RESET");
gpio_direction_output(GPIO_ALS_INT, 0);
udelay(2);
gpio_direction_output(GPIO_ALS_INT, 1);
return 0;
}
static struct bh1721fvc_platform_data bh1721fvc_pdata = {
.reset = bh1721fvc_light_sensor_reset,
};
static int gp2a_light_adc_value(void)
{
return twl6030_get_gpadc_conversion(GP2A_LIGHT_ADC_CHANNEL);
}
static void gp2a_power(bool on)
{
}
static void omap4_espresso_sensors_regulator_on(bool on)
{
struct regulator *reg_v28;
struct regulator *reg_v18;
reg_v28 = regulator_get(NULL, "VAP_IO_2.8V");
if (IS_ERR(reg_v28)) {
pr_err("%s [%d] failed to get v2.8 regulator\n",
__func__, __LINE__);
return;
}
reg_v18 = regulator_get(NULL, "VDD_IO_1.8V");
if (IS_ERR(reg_v18)) {
pr_err("%s [%d] failed to get v1.8 regulator\n",
__func__, __LINE__);
return;
}
pr_debug("%s: %d\n", __func__, on);
if (on) {
regulator_enable(reg_v28);
regulator_enable(reg_v18);
} else {
regulator_disable(reg_v18);
regulator_disable(reg_v28);
}
regulator_put(reg_v28);
regulator_put(reg_v18);
if (!board_is_espresso10())
msleep(20);
}
static struct gp2a_platform_data gp2a_pdata = {
.power = gp2a_power,
.p_out = GPIO_PS_VOUT,
.light_adc_value = gp2a_light_adc_value,
.ldo_on = omap4_espresso_sensors_regulator_on,
};
struct mag_platform_data magnetic_pdata = {
.power_on = omap4_espresso_sensors_regulator_on,
.offset_enable = 0,
.orientation = 8, /* P31xx default */
.chg_status = CABLE_TYPE_NONE,
.ta_offset.v = YAS_TA_OFFSET_ESPRESSO,
.usb_offset.v = YAS_USB_OFFSET_ESPRESSO,
.full_offset.v = YAS_FULL_OFFSET,
};
void omap4_espresso_set_chager_type(int type)
{
static int prev = CABLE_TYPE_NONE;
magnetic_pdata.chg_status = type;
if (board_is_espresso10()) {
if (prev != type)
magnetic_pdata.offset_enable = 1;
prev = type;
}
}
struct acc_platform_data accelerometer_pdata = {
.cal_path = "/efs/calibration_data",
.ldo_on = omap4_espresso_sensors_regulator_on,
.orientation = 8, /* P31xx default */
};
static struct al3201_platform_data al3201_pdata = {
.power_on = omap4_espresso_sensors_regulator_on,
};
static struct i2c_board_info __initdata espresso10_sensors_i2c4_boardinfo[] = {
{
I2C_BOARD_INFO("bh1721fvc", 0x23),
.platform_data = &bh1721fvc_pdata,
},
};
static struct i2c_board_info __initdata espresso_sensors_i2c4_boardinfo_rf[] = {
{
I2C_BOARD_INFO("gp2a", 0x44),
.platform_data = &gp2a_pdata,
},
};
static struct i2c_board_info __initdata espresso_sensors_i2c4_boardinfo_wf[] = {
{
I2C_BOARD_INFO("AL3201", 0x1c),
.platform_data = &al3201_pdata,
},
};
static struct i2c_board_info __initdata espresso_common_sensors_i2c4_boardinfo[] = {
{
I2C_BOARD_INFO("accelerometer", 0x18),
.platform_data = &accelerometer_pdata,
},
{
I2C_BOARD_INFO("geomagnetic", 0x2e),
.platform_data = &magnetic_pdata,
},
};
void __init omap4_espresso_sensors_init(void)
{
int32_t ta_offset_espresso10[] = YAS_TA_OFFSET_ESPRESSO10;
int32_t usb_offset_espresso10[] = YAS_USB_OFFSET_ESPRESSO10;
struct gpio sensors_gpios[] = {
{
.flags = GPIOF_IN,
.gpio = GPIO_ALS_INT,
.label = "ALS_INT_18",
},
{
.flags = GPIOF_IN,
.gpio = GPIO_PS_VOUT,
.label = "PS_VOUT",
},
{
.flags = GPIOF_IN,
.gpio = GPIO_MSENSE_IRQ,
.label = "MSENSE_IRQ",
},
};
gpio_request_array(sensors_gpios, ARRAY_SIZE(sensors_gpios));
omap_mux_init_gpio(GPIO_MSENSE_IRQ,
OMAP_PIN_OUTPUT);
gpio_free(GPIO_MSENSE_IRQ);
gpio_request(GPIO_MSENSE_IRQ, "MSENSE_IRQ");
gpio_direction_output(GPIO_MSENSE_IRQ, 1);
if (!board_is_espresso10()) {
if (board_has_modem()) {
i2c_register_board_info(4, espresso_sensors_i2c4_boardinfo_rf,
ARRAY_SIZE(espresso_sensors_i2c4_boardinfo_rf));
} else {
i2c_register_board_info(4, espresso_sensors_i2c4_boardinfo_wf,
ARRAY_SIZE(espresso_sensors_i2c4_boardinfo_wf));
}
} else {
magnetic_pdata.orientation = 7;
accelerometer_pdata.orientation = 6;
magnetic_pdata.ta_offset.v[0] = ta_offset_espresso10[0];
magnetic_pdata.ta_offset.v[1] = ta_offset_espresso10[1];
magnetic_pdata.ta_offset.v[2] = ta_offset_espresso10[2];
magnetic_pdata.usb_offset.v[0] = usb_offset_espresso10[0];
magnetic_pdata.usb_offset.v[1] = usb_offset_espresso10[1];
magnetic_pdata.usb_offset.v[2] = usb_offset_espresso10[2];
i2c_register_board_info(4, espresso10_sensors_i2c4_boardinfo,
ARRAY_SIZE(espresso10_sensors_i2c4_boardinfo));
}
i2c_register_board_info(4, espresso_common_sensors_i2c4_boardinfo,
ARRAY_SIZE(espresso_common_sensors_i2c4_boardinfo));
}
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