shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 20:07:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

spi: show spi test time and data rate after test

Browse Source 
Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
This commit is contained in:
Huibin Hong
2015-03-19 17:56:59 +08:00
parent a3dbbc2deb
commit be941ac045
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/spi/spi-rockchip-test.c
View File

@@ -43,6 +43,8 @@ struct spi_test_data {
};
static struct spi_test_data *g_spi_test_data[MAX_SPI_DEV_NUM];
ktime_t ktime_get(void);
ktime_t k1,k2;
static ssize_t spi_test_write(struct file *file,
@@ -80,7 +82,7 @@ static ssize_t spi_test_write(struct file *file,
}
spi = g_spi_test_data[nr]->spi;
k1 = ktime_get();
for(i=0; i<5000; i++)
{
ret = spi_write(spi, txbuf, 256);
@@ -91,9 +93,10 @@ static ssize_t spi_test_write(struct file *file,
if(i%500==0)
printk("%s:test %d times\n\n",__func__,i+1);
}
k2 = ktime_get();
k2 = ktime_sub(k2, k1);
if(!ret)
printk("%s:bus_num=%d,chip_select=%d,ok\n",__func__,spi->master->bus_num, spi->chip_select);
printk("%s:bus_num=%d,chip_select=%d,ok cost:%dus data rate:%d Kbits/s\n",__func__,spi->master->bus_num, spi->chip_select, ktime_to_us(k2), 1536*5000*8/ktime_to_ms(k2));
else
printk("%s:bus_num=%d,chip_select=%d,error\n",__func__,spi->master->bus_num, spi->chip_select);
@@ -159,8 +162,8 @@ static int rockchip_spi_test_probe(struct spi_device *spi)
{
int ret;
int id = 0;
static struct dw_spi_chip *spi_chip_data;
struct spi_test_data *spi_test_data;
struct dw_spi_chip *spi_chip_data = NULL;
struct spi_test_data *spi_test_data = NULL;
if(!spi)
return -ENOMEM;