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/*
* /drivers/mfd/twl6030-poweroff.c
*
* Power off device
*
* Copyright (C) 2011 Texas Instruments Corporation
*
* Written by Rajeev Kulkarni <rajeevk@ti.com>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of this
* archive for more details.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/i2c/twl.h>
#define TWL6030_PHOENIX_DEV_ON 0x25
#define APP_DEVOFF (1<<0)
#define CON_DEVOFF (1<<1)
#define MOD_DEVOFF (1<<2)
void twl6030_poweroff(void)
{
u8 val = 0;
int err = 0;
err = twl_i2c_read_u8(TWL6030_MODULE_ID0, &val,
TWL6030_PHOENIX_DEV_ON);
if (err) {
pr_warning("I2C error %d reading PHOENIX_DEV_ON\n", err);
return;
}
val |= APP_DEVOFF | CON_DEVOFF | MOD_DEVOFF;
err = twl_i2c_write_u8(TWL6030_MODULE_ID0, val,
TWL6030_PHOENIX_DEV_ON);
if (err) {
pr_warning("I2C error %d writing PHOENIX_DEV_ON\n", err);
return;
}
return;
}
static int __init twl6030_poweroff_init(void)
{
pm_power_off = twl6030_poweroff;
return 0;
}
static void __exit twl6030_poweroff_exit(void)
{
pm_power_off = NULL;
}
module_init(twl6030_poweroff_init);
module_exit(twl6030_poweroff_exit);
MODULE_DESCRIPTION("TLW6030 device power off");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Rajeev Kulkarni");
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