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|
/*****************************************************************************
*
* Filename:
* ---------
* ccci_pmic.c
*
* Project:
* --------
* ALPS
*
* Description:
* ------------
* MT65XX CCCI PMIC Driver
*
****************************************************************************/
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/cdev.h>
#include <linux/spinlock.h>
#include <linux/wakelock.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/wait.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <asm/dma-mapping.h>
#include <ccci.h>
#include <ccci_pmic.h>
typedef enum
{
VSIM_1_3V = 0,
VSIM_1_5V,
VSIM_1_8V,
VSIM_2_5V,
VSIM_2_8V,
VSIM_3_0V,
VSIM_3_3V,
VSIM_1_2V
}vsim_sel_enum;
#define CONFIG_CCCI_PMIC_DEBUG_MSG
#define CCCI_PMIC_DEVNAME "ccci_pmic"
#define CCCI_PMIC_QSIZE (10)
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36))
static spinlock_t pmic_spinlock = SPIN_LOCK_UNLOCKED;
#else
static DEFINE_SPINLOCK(pmic_spinlock);
#endif
static shared_mem_pmic_t *ccci_pmic_shared_mem;
static int ccci_pmic_shared_mem_phys_addr;
static dev_t pmic_dev_num;
static struct cdev pmic_cdev;
static struct kfifo pmic_fifo;
static void ccci_pmic_read(struct work_struct *ws);
static DECLARE_WORK (ccci_pmic_read_work, ccci_pmic_read);
int g_VSIM_1 = 2;
int g_VSIM_2 = 2;
static void ccci_pmic_read(struct work_struct *ws)
{
unsigned long exec_time_1=0, exec_time_2=0;
unsigned long arg;
unsigned long flag;
// mt6326_check_power();
/*
* 0. Start Timer
*/
// exec_time_1 = sampletrigger(0, 0, 0);
exec_time_1 = 0;
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("************* ccci_pmic_callback : exec_time_1 = %ld ms\r\n", exec_time_1);
CCCI_PMIC_MSG("ccci_pmic_callback : exec_time_1 = %ld ms\r\n", exec_time_1);
//#endif
/*
* 1. Parsing CCCI Message Format which received from MD site
*/
spin_lock_irqsave(&pmic_spinlock,flag);
if (kfifo_out(&pmic_fifo, (unsigned char *) &arg, sizeof(unsigned long)) != sizeof(unsigned long))
{
spin_unlock_irqrestore(&pmic_spinlock,flag);
CCCI_MSG("<pmic>Unable to get new request from fifo\n");
return;
}
spin_unlock_irqrestore(&pmic_spinlock,flag);
ccci_pmic_shared_mem->ccci_msg.pmic6326_op = arg & 0x000000FF;
ccci_pmic_shared_mem->ccci_msg.pmic6326_type = (arg & 0x0000FF00) >> 8;
ccci_pmic_shared_mem->ccci_msg.pmic6326_param1 = (arg & 0x00FF0000) >> 16;
ccci_pmic_shared_mem->ccci_msg.pmic6326_param2 = (arg & 0xFF000000) >> 24;
/*
* 2. Execute the operation (API) that MD site called
*/
switch(ccci_pmic_shared_mem->ccci_msg.pmic6326_op)
{
case PMIC6326_VSIM_ENABLE :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : PMIC6326_VSIM_ENABLE\n");
CCCI_PMIC_MSG("PMIC6326_VSIM_ENABLE\n");
//#endif
//pmic_vsim_enable(ccci_pmic_shared_mem->ccci_msg.pmic6326_param1);
break;
case PMIC6326_VSIM_SET_AND_ENABLE :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : PMIC6326_VSIM_SET_AND_ENABLE\n");
CCCI_PMIC_MSG("PMIC6326_VSIM_SET_AND_ENABLE\n");
//#endif
//pmic_vsim_cal(0);
//pmic_vsim_sel(ccci_pmic_shared_mem->ccci_msg.pmic6326_param1);
//pmic_vsim_enable(KAL_TRUE);
break;
case PMIC6236_LOCK :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : PMIC6236_LOCK\n");
CCCI_PMIC_MSG("PMIC6236_LOCK\n");
//#endif
break;
case PMIC6326_UNLOCK :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : PMIC6326_UNLOCK\n");
CCCI_PMIC_MSG("CONFIG_CCCI_PMIC_DEBUG_MSG\n");
//#endif
break;
case PMIC6326_VSIM2_ENABLE :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : PMIC6326_VSIM2_ENABLE\n");
CCCI_PMIC_MSG("PMIC6326_VSIM2_ENABLE\n");
//#endif
//pmic_vsim2_enable(ccci_pmic_shared_mem->ccci_msg.pmic6326_param1);
break;
case PMIC6326_VSIM2_SET_AND_ENABLE :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : PMIC6326_VSIM2_SET_AND_ENABLE\n");
CCCI_PMIC_MSG("PMIC6326_VSIM2_SET_AND_ENABLE\n");
//#endif
//pmic_vsim2_sel(ccci_pmic_shared_mem->ccci_msg.pmic6326_param1);
//pmic_vsim2_enable(KAL_TRUE);
break;
default :
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("ccci_pmic_callback : ERROR op !\n");
CCCI_PMIC_MSG("Error op\n");
//#endif
}
// exec_time_2 = sampletrigger(0, 0, 1);
exec_time_2 = 10000;
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("************* ccci_pmic_callback : exec_time_2 = %ld ms\r\n", exec_time_2);
CCCI_PMIC_MSG("exec_time_2 = %ld ms\r\n", exec_time_2);
//#endif
exec_time_2 = (exec_time_2 - exec_time_1)/1000;
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("************* ccci_pmic_callback : exec_time = %ld ms\r\n", exec_time_2);
CCCI_PMIC_MSG("exec_time = %ld ms\r\n", exec_time_2);
//#endif
/*
* 3. AP site write Message to share memory "ccci_pmic_shared_mem"
*/
ccci_pmic_shared_mem->ccci_msg.pmic6326_type = (kal_uint8)PMIC6326_RES;
ccci_pmic_shared_mem->ccci_msg_info.pmic6326_exec_time = exec_time_2;
ccci_pmic_shared_mem->ccci_msg = ccci_pmic_shared_mem->ccci_msg;
ccci_pmic_shared_mem->ccci_msg_info = ccci_pmic_shared_mem->ccci_msg_info;
/*
* 4. Inform AP CCCI driver
*/
//ccci_write_mailbox(CCCI_PMIC_TX, 0);
}
static void ccci_pmic_callback(CCCI_BUFF_T *buff, void *private_data)
{
unsigned long flag;
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("CCCI_PMIC: ccci_pmic_callback\n");
CCCI_PMIC_MSG("callback++\n");
//#endif
spin_lock_irqsave(&pmic_spinlock,flag);
if (buff->channel == CCCI_PMIC_RX)
{
if (kfifo_in(&pmic_fifo, (unsigned char *) &buff->data[1], sizeof(unsigned long)) != sizeof(unsigned long))
{
spin_unlock_irqrestore(&pmic_spinlock,flag);
//CCCI_LOGE("CCCI_PMIC: Unable to put new request into fifo\n");
CCCI_PMIC_MSG("callback--0\n");
return;
}
spin_unlock_irqrestore(&pmic_spinlock,flag);
schedule_work(&ccci_pmic_read_work);
}
CCCI_PMIC_MSG("callback--1\n");
}
static int ccci_pmic_start(void)
{
int size;
#if 0
unsigned int i=0;
unsigned long exec_time_1=0, exec_time_2=0;
/* Test Timer*/
exec_time_1 = sampletrigger(0, 0, 0);
printk("************* ccci_pmic_callback : exec_time_1 = %ld ms\r\n", exec_time_1);
for(i=0;i<1000;i++)
{
printk("************* ");
}
exec_time_2 = sampletrigger(0, 0, 1);
printk("************* ccci_pmic_callback : exec_time_2 = %ld ms\r\n", exec_time_2);
exec_time_2 = (exec_time_2 - exec_time_1)/1000;
printk("************* ccci_pmic_callback : exec_time = %ld ms\r\n", exec_time_2);
#endif
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("CCCI_PMIC: ccci_pmic_start ****************************\n");
CCCI_PMIC_MSG("ccci_pmic_start\n");
//#endif
if (0!= kfifo_alloc(&pmic_fifo,sizeof(unsigned long) * CCCI_PMIC_QSIZE, GFP_KERNEL))
{
//CCCI_LOGE("CCCI_PMIC: Unable to create fifo\n");
CCCI_MSG("<pmic> Unable to create fifo\n");
return -EFAULT;
}
//ASSERT(ccci_pmic_setup((int*)&ccci_pmic_shared_mem, &ccci_pmic_shared_mem_phys_addr, &size) == CCCI_SUCCESS);
//printk("CCCI PMIC %x:%x:%d\n", (unsigned int)ccci_pmic_shared_mem, (unsigned int)ccci_pmic_shared_mem_phys_addr, size);
CCCI_PMIC_MSG("%x:%x:%d\n", (unsigned int)ccci_pmic_shared_mem, (unsigned int)ccci_pmic_shared_mem_phys_addr, size);
//ASSERT(ccci_register(CCCI_PMIC_RX, ccci_pmic_callback, NULL) == CCCI_SUCCESS);
//ASSERT(ccci_register(CCCI_PMIC_TX, ccci_pmic_callback, NULL) == CCCI_SUCCESS);
return 0;
}
static void ccci_pmic_stop(void)
{
//#ifdef CONFIG_CCCI_PMIC_DEBUG_MSG
//printk("CCCI_PMIC: ccci_pmic_stop ****************************\n");
CCCI_PMIC_MSG("pmic_stop\n");
//#endif
ccci_pmic_shared_mem = NULL;
ccci_pmic_shared_mem_phys_addr = 0;
//ASSERT(ccci_unregister(CCCI_PMIC_RX) == CCCI_SUCCESS);
//ASSERT(ccci_unregister(CCCI_PMIC_TX) == CCCI_SUCCESS);
kfifo_free(&pmic_fifo);
}
static struct file_operations pmic_fops =
{
.owner = THIS_MODULE,
//.ioctl = ccci_pmic_ioctl,
//.open = ccci_pmic_open,
//.release = ccci_pmic_release,
};
int __init ccci_pmic_init(void)
{
int ret;
if (alloc_chrdev_region(&pmic_dev_num, 0, 1, CCCI_PMIC_DEVNAME))
{
//printk(KERN_ERR "CCCI_PMIC: Device major number allocation failed\n");
CCCI_MSG("<pmic>Device major number allocation failed\n");
return -EAGAIN;
}
cdev_init(&pmic_cdev, &pmic_fops);
pmic_cdev.owner = THIS_MODULE;
ret = cdev_add(&pmic_cdev, pmic_dev_num, 1);
if (ret)
{
//printk(KERN_ERR "CCCI_PMIC: Char device add failed\n");
CCCI_MSG("<pmic>Char device add failed\n");
return ret;
}
ret = ccci_pmic_start();
if (ret)
{
//printk(KERN_ERR "CCCI_PMIC: Unable to initialize environment\n");
CCCI_MSG("<pmic>Unable to initialize environment\n");
return ret;
}
//printk("CCCI_PMIC: Init complete, device major number = %d\n", MAJOR(pmic_dev_num));
CCCI_PMIC_MSG("Init complete, device major number = %d\n", MAJOR(pmic_dev_num));
return 0;
}
void __exit ccci_pmic_exit(void)
{
ccci_pmic_stop();
cdev_del(&pmic_cdev);
unregister_chrdev_region(pmic_dev_num, 1);
}
|
