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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>
#if (defined(CONFIG_ARCH_SCX35L64)||defined(CONFIG_ARCH_SCX35LT8))
#include <soc/sprd/adi.h>
#include <soc/sprd/adc.h>
#else
#include <soc/sprd/hardware.h>
#include <soc/sprd/adi.h>
#include <soc/sprd/adc.h>
#endif
#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
#ifdef CONFIG_ARCH_SCX35
#include <soc/sprd/sci_glb_regs.h>
#define ANA_VIBRATOR_CTRL0 (ANA_REG_GLB_VIBR_CTRL0)
#if defined(CONFIG_ADIE_SC2723)
#define BIT_VIBRATOR_PD BIT_LDO_VIBR_PD
#else
#define BIT_VIBRATOR_PD BIT_VIBR_PON
#define ANA_VIBRATOR_CTRL1 (ANA_REG_GLB_VIBR_CTRL1)
#define ANA_VIBRATOR_CTRL2 (ANA_REG_GLB_VIBR_CTRL2)
#define ANA_VIBR_WR_PROT (ANA_REG_GLB_VIBR_WR_PROT_VALUE)
#endif
#define VIBRATOR_REG_UNLOCK (0x1A2B)
#else
#define SPRD_ANA_BASE (SPRD_MISC_BASE + 0x600)
#define ANA_REG_BASE (SPRD_ANA_BASE)
#define ANA_VIBR_WR_PROT (ANA_REG_BASE + 0x90)
#define ANA_VIBRATOR_CTRL0 (ANA_REG_BASE + 0x74)
#define ANA_VIBRATOR_CTRL1 (ANA_REG_BASE + 0x78)
#define VIBRATOR_REG_UNLOCK (0xA1B2)
#endif
#define VIBRATOR_REG_LOCK ((~VIBRATOR_REG_UNLOCK) & 0xffff)
#define VIBRATOR_STABLE_LEVEL (4)
#ifdef CONFIG_ARCH_SCX15
#define VIBRATOR_INIT_LEVEL (0x0f)
#define VIBRATOR_INIT_STATE_CNT (0x600)
#else
#define VIBRATOR_INIT_LEVEL (4)
#define VIBRATOR_INIT_STATE_CNT (10)
#endif
#define VIBR_STABLE_V_SHIFT (12)
#define VIBR_STABLE_V_MSK (0x0f << VIBR_STABLE_V_SHIFT)
#define VIBR_INIT_V_SHIFT (8)
#define VIBR_INIT_V_MSK (0x0f << VIBR_INIT_V_SHIFT)
#define VIBR_V_BP_SHIFT (4)
#define VIBR_V_BP_MSK (0x0f << VIBR_V_BP_SHIFT)
#define VIBR_PD_RST (1 << 3)
#define VIBR_PD_SET (1 << 2)
#define VIBR_BP_EN (1 << 1)
#define VIBR_RTC_EN (1 << 0)
#ifdef CONFIG_SS_FUNCTION
#define VIBR_PULLDOWN_EN (1 << 1)
#define LDO_VIBR_PD (1 << 8)
#endif
#ifdef CONFIG_SC_VIBRATOR_POWER
static struct regulator *vibrator_regulator = NULL;
#endif
static struct work_struct vibrator_work;
static struct hrtimer vibe_timer;
static int vibe_state = 0;
#ifdef CONFIG_SS_FUNCTION
static void set_vibrator(int on)
{
if (on)
{
printk("###############vibrator on##################\n");
sci_adi_set((unsigned long)ANA_REG_GLB_BA_CTRL3, VIBR_PULLDOWN_EN);
sci_adi_clr((unsigned long)ANA_REG_GLB_BA_CTRL2, LDO_VIBR_PD);
}
else
{
printk("###############vibrator off##################\n");
sci_adi_set((unsigned long)ANA_REG_GLB_BA_CTRL2, LDO_VIBR_PD);
sci_adi_clr((unsigned long)ANA_REG_GLB_BA_CTRL3, VIBR_PULLDOWN_EN);
}
}
static void vibrator_hw_init(void)
{
return;
}
#else
static void set_vibrator(int on)
{
#ifdef CONFIG_SC_VIBRATOR_GPIO
gpio_set_value(GPIO_VIBRATOR_INT, on);
#elif defined(CONFIG_SC_VIBRATOR_POWER)
if (on) {
regulator_enable(vibrator_regulator);
}
else {
regulator_disable(vibrator_regulator);
}
#else
#if !defined(CONFIG_ADIE_SC2723)
/* unlock vibrator registor */
sci_adi_write((unsigned long)ANA_VIBR_WR_PROT, VIBRATOR_REG_UNLOCK, 0xffff);
#endif
#ifdef CONFIG_ARCH_SCX35
if (on)
sci_adi_write((unsigned long)ANA_VIBRATOR_CTRL0, BIT_VIBRATOR_PD, BIT_VIBRATOR_PD);
else
sci_adi_write((unsigned long)ANA_VIBRATOR_CTRL0, 0, BIT_VIBRATOR_PD);
#else
sci_adi_clr((unsigned long)ANA_VIBRATOR_CTRL0, VIBR_PD_SET | VIBR_PD_RST);
if (on)
sci_adi_set((unsigned long)ANA_VIBRATOR_CTRL0, VIBR_PD_RST);
else
sci_adi_set((unsigned long)ANA_VIBRATOR_CTRL0, VIBR_PD_SET);
#endif
#if !defined(CONFIG_ADIE_SC2723)
/* lock vibrator registor */
sci_adi_write((unsigned long)ANA_VIBR_WR_PROT, VIBRATOR_REG_LOCK, 0xffff);
#endif
#endif
}
static void vibrator_hw_init(void)
{
#ifdef CONFIG_SC_VIBRATOR_GPIO
gpio_request(GPIO_VIBRATOR_INT, "vibrator");
gpio_direction_output(GPIO_VIBRATOR_INT, 0);
#elif defined(CONFIG_SC_VIBRATOR_POWER)
vibrator_regulator = regulator_get(NULL, "vddcammot");
regulator_set_voltage(vibrator_regulator, 3300000, 3300000);
#else
#if !defined(CONFIG_ADIE_SC2723)
sci_adi_write((unsigned long)ANA_VIBR_WR_PROT, VIBRATOR_REG_UNLOCK, 0xffff);
#endif
#ifdef CONFIG_ARCH_SCX35
sci_adi_write((unsigned long)ANA_REG_GLB_RTC_CLK_EN, BIT_RTC_VIBR_EN, BIT_RTC_VIBR_EN);
#else
sci_adi_set((unsigned long)ANA_VIBRATOR_CTRL0, VIBR_RTC_EN);
sci_adi_clr((unsigned long)ANA_VIBRATOR_CTRL0, VIBR_BP_EN);
#endif
/* set init current level */
sci_adi_write((unsigned long)ANA_VIBRATOR_CTRL0,
(VIBRATOR_INIT_LEVEL << VIBR_INIT_V_SHIFT),
VIBR_INIT_V_MSK);
sci_adi_write((unsigned long)ANA_VIBRATOR_CTRL0,
(VIBRATOR_STABLE_LEVEL << VIBR_STABLE_V_SHIFT),
VIBR_STABLE_V_MSK);
#if !defined(CONFIG_ADIE_SC2723)
/* set stable current level */
sci_adi_write((unsigned long)ANA_VIBRATOR_CTRL1, VIBRATOR_INIT_STATE_CNT, 0xffff);
sci_adi_write((unsigned long)ANA_VIBR_WR_PROT, VIBRATOR_REG_LOCK, 0xffff);
#endif
#endif
}
#endif
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);
}
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();
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;
}
#ifdef CONFIG_OF
late_initcall(sprd_init_vibrator);
#else
module_init(sprd_init_vibrator);
#endif
MODULE_DESCRIPTION("vibrator driver for spreadtrum Processors");
MODULE_LICENSE("GPL");
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