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nand:add suspend and resume function.

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This commit is contained in:
Zhaoyifeng
2012-07-20 17:05:53 +08:00
parent 84499f3021
commit ca57f3db93
2 changed files with 25 additions and 5 deletions
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2
drivers/mtd/rknand/rknand_base.h
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@@ -70,6 +70,8 @@ struct rknand_info {
int emmc_clk_power_save_en;
char *pdmaBuf;
void (*nand_timing_config)(unsigned long AHBnKHz);
void (*rknand_suspend)(void);
void (*rknand_resume)(void);
int reserved[20];
};

28
drivers/mtd/rknand/rknand_base_ko.c
View File

@@ -23,10 +23,11 @@
//#include "api_flash.h"
#include "rknand_base.h"
#include <linux/clk.h>
#include <linux/cpufreq.h>
#define DRIVER_NAME "rk29xxnand"
const char rknand_base_version[] = "rknand_base.c version: 4.34 20120401";
const char rknand_base_version[] = "rknand_base.c version: 4.38 20120717";
#define NAND_DEBUG_LEVEL0 0
#define NAND_DEBUG_LEVEL1 1
#define NAND_DEBUG_LEVEL2 2
@@ -67,10 +68,23 @@ static char grknand_trac_buf[MAX_TRAC_BUFFER_SIZE];
static char *ptrac_buf = grknand_trac_buf;
void trac_log(long lba,int len, int mod)
{
unsigned long long t;
unsigned long nanosec_rem;
t = cpu_clock(UINT_MAX);
nanosec_rem = do_div(t, 1000000000);
if(mod)
ptrac_buf += sprintf(ptrac_buf,"W %d %d \n",lba,len);
ptrac_buf += sprintf(ptrac_buf,"[%5lu.%06lu] W %d %d \n",(unsigned long) t, nanosec_rem / 1000,lba,len);
else
ptrac_buf += sprintf(ptrac_buf,"R %d %d \n",lba,len);
ptrac_buf += sprintf(ptrac_buf,"[%5lu.%06lu] R %d %d \n",(unsigned long) t, nanosec_rem / 1000,lba,len);
}
void trac_logs(char *s)
{
unsigned long long t;
unsigned long nanosec_rem;
t = cpu_clock(UINT_MAX);
nanosec_rem = do_div(t, 1000000000);
ptrac_buf += sprintf(ptrac_buf,"[%5lu.%06lu] %s\n",(unsigned long) t, nanosec_rem / 1000,s);
}
static int rkNand_trac_read(char *page, char **start, off_t off, int count, int *eof,
@@ -80,7 +94,7 @@ static int rkNand_trac_read(char *page, char **start, off_t off, int count, int
int len;
len = ptrac_buf - grknand_trac_buf - off;
printk("rkNand_trac_read: page=%x,off=%x,count=%x ,len=%x \n",(int)page,(int)off,count,len);
//printk("rkNand_trac_read: page=%x,off=%x,count=%x ,len=%x \n",(int)page,(int)off,count,len);
if (len < 0)
len = 0;
@@ -321,7 +335,7 @@ static int rknand_nand_timing_cfg(void)
if(gpNandInfo->nand_timing_config)
{
nandc_clk_rate = newclk;
gpNandInfo->nand_timing_config( nandc_clk_rate / 1000); // KHz
//gpNandInfo->nand_timing_config( nandc_clk_rate / 1000); // KHz
}
}
return 0;
@@ -493,12 +507,16 @@ exit_free:
static int rknand_suspend(struct platform_device *pdev, pm_message_t state)
{
gpNandInfo->rknand.rknand_schedule_enable = 0;
if(gpNandInfo->rknand_suspend)
gpNandInfo->rknand_suspend();
NAND_DEBUG(NAND_DEBUG_LEVEL0,"rknand_suspend: \n");
return 0;
}
static int rknand_resume(struct platform_device *pdev)
{
if(gpNandInfo->rknand_resume)
gpNandInfo->rknand_resume();
gpNandInfo->rknand.rknand_schedule_enable = 1;
NAND_DEBUG(NAND_DEBUG_LEVEL0,"rknand_resume: \n");
return 0;