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/*
* Copyright (C) 2012 Spreadtrum Communications 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/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/hrtimer.h>
#include <../../../drivers/staging/android/timed_output.h>
#include <linux/sched.h>
#include <soc/sprd/hardware.h>
#include <soc/sprd/adi.h>
#include <soc/sprd/adc.h>
#ifdef CONFIG_SC_VIBRATOR_GPIO
#include <linux/gpio.h>
#include <soc/sprd/board.h>
#elif defined(CONFIG_SC_VIBRATOR_POWER)
#include <linux/regulator/consumer.h>
#endif
#include <soc/sprd/sci_glb_regs.h>
#define ANA_VIBRATOR_CTRL0 (ANA_REGS_GLB_BASE + 0xf8)
#define CUR_DRV_CAL_SEL (0x0 << 12)
#define SLP_LDOVIBR_PD_EN (0x1 << 9)
#define LDO_VIBR_PD (0x1 << 8)
#define LDO_VIBR_V (0xB4)
static struct work_struct vibrator_work;
static struct hrtimer vibe_timer;
static int vibe_state = 0;
static inline uint32_t vibrator_read(unsigned long reg)
{
return sci_adi_read(reg);
}
static void set_vibrator(int on)
{
if (on){
sci_adi_clr(ANA_VIBRATOR_CTRL0, LDO_VIBR_PD);
sci_adi_clr(ANA_VIBRATOR_CTRL0, SLP_LDOVIBR_PD_EN);
printk("v_reg:0x%08x\n",ANA_VIBRATOR_CTRL0);
printk("v_reg_value:0x%08x\n",vibrator_read(ANA_VIBRATOR_CTRL0));
}
else{
sci_adi_write(ANA_VIBRATOR_CTRL0, LDO_VIBR_PD, LDO_VIBR_PD);
sci_adi_write(ANA_VIBRATOR_CTRL0, SLP_LDOVIBR_PD_EN, SLP_LDOVIBR_PD_EN);
}
}
static void vibrator_hw_init(void)
{
sci_adi_write(ANA_REG_GLB_RTC_CLK_EN, BIT_RTC_VIBR_EN, BIT_RTC_VIBR_EN);
sci_adi_write(ANA_VIBRATOR_CTRL0,CUR_DRV_CAL_SEL,CUR_DRV_CAL_SEL);
sci_adi_clr(ANA_VIBRATOR_CTRL0, 0xFF);
sci_adi_write(ANA_VIBRATOR_CTRL0,LDO_VIBR_V,LDO_VIBR_V);
}
static void update_vibrator(struct work_struct *work)
{
set_vibrator(vibe_state);
}
static void vibrator_enable(struct timed_output_dev *dev, int value)
{
hrtimer_cancel(&vibe_timer);
if (value == 0)
vibe_state = 0;
else {
value = (value > 15000) ? 15000 : value;
vibe_state = 1;
hrtimer_start(&vibe_timer,
ktime_set(value / 1000, (value % 1000) * 1000000),
HRTIMER_MODE_REL);
printk("vibrator_enable:value = %d\n",value);
printk("vibrator_enable:vibe_state = %d\n",vibe_state);
}
schedule_work(&vibrator_work);
}
static int vibrator_get_time(struct timed_output_dev *dev)
{
ktime_t re;
if (hrtimer_active(&vibe_timer)) {
re = hrtimer_get_remaining(&vibe_timer);
return ktime_to_ns(re);
} else
return 0;
}
static enum hrtimer_restart vibrator_timer_func(struct hrtimer *timer)
{
vibe_state = 0;
schedule_work(&vibrator_work);
return HRTIMER_NORESTART;
}
static struct timed_output_dev sprd_vibrator = {
.name = "vibrator",
.get_time = vibrator_get_time,
.enable = vibrator_enable,
};
static int __init sprd_init_vibrator(void)
{
vibrator_hw_init();
printk("locate in sprd_init_vibrator!\n");
INIT_WORK(&vibrator_work, update_vibrator);
vibe_state = 0;
hrtimer_init(&vibe_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
vibe_timer.function = vibrator_timer_func;
timed_output_dev_register(&sprd_vibrator);
return 0;
}
module_init(sprd_init_vibrator);
MODULE_DESCRIPTION("vibrator driver for spreadtrum Processors");
MODULE_LICENSE("GPL");
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