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improve spi_test to support SPI0 and SPI1 test

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This commit is contained in:
luowei 2013-08-28 16:54:02 +08:00
parent c2a7dca71c
commit b3f70746c8
1 changed files with 102 additions and 29 deletions
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131
drivers/spi/spi_test.c
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@ -24,6 +24,8 @@
#include <linux/spi/spi.h>
#include <mach/board.h>
#define MAX_SPI_BUS_NUM 2
struct spi_test_data {
struct device *dev;
struct spi_device *spi;
@ -32,62 +34,117 @@ struct spi_test_data {
char *tx_buf;
int tx_len;
};
static struct spi_test_data *g_spi_test_data;
static struct spi_test_data *g_spi_test_data[MAX_SPI_BUS_NUM];
static struct rk29xx_spi_chip spi_test_chip = {
static struct rk29xx_spi_chip spi_test_chip[] = {
{
//.poll_mode = 1,
.enable_dma = 1,
},
{
//.poll_mode = 1,
.enable_dma = 1,
},
};
static struct spi_board_info board_spi_test_devices[] = {
#if defined(CONFIG_SPIM0_RK29)
{
.modalias = "spi_test",
.modalias = "spi_test_bus0",
.bus_num = 0, //0 or 1
.max_speed_hz = 12*1000*1000,
.chip_select = 0,
.controller_data = &spi_test_chip,
},
.mode = SPI_MODE_0,
.controller_data = &spi_test_chip[0],
},
#endif
#if defined(CONFIG_SPIM1_RK29)
{
.modalias = "spi_test_bus1",
.bus_num = 1, //0 or 1
.max_speed_hz = 12*1000*1000,
.chip_select = 0,
.mode = SPI_MODE_0,
.controller_data = &spi_test_chip[1],
}
#endif
};
static ssize_t spi_test_write(struct file *file,
const char __user *buf, size_t count, loff_t *offset)
{
char nr_buf[8];
int nr = 0, ret;
char nr_buf[8];
int nr = 0, ret;
int i = 0;
struct spi_device *spi = g_spi_test_data->spi;
struct spi_device *spi = NULL;
char txbuf[256],rxbuf[256];
if(count > 3)
return -EFAULT;
ret = copy_from_user(nr_buf, buf, count);
if(ret < 0)
return -EFAULT;
printk("%s:0:bus=0,cs=0; 1:bus=0,cs=1; 2:bus=1,cs=0; 3:bus=1,cs=1\n",__func__);
sscanf(nr_buf, "%d", &nr);
if(nr >= 2 || nr < 0)
{
printk("%s:data is error\n",__func__);
return -EFAULT;
}
if(count > 3)
return -EFAULT;
ret = copy_from_user(nr_buf, buf, count);
if(ret < 0)
return -EFAULT;
sscanf(nr_buf, "%d", &nr);
if(nr >= 4 || nr < 0)
{
printk("%s:cmd is error\n",__func__);
return -EFAULT;
}
for(i=0; i<256; i++)
txbuf[i] = i;
#if !defined(CONFIG_SPIM0_RK29)
if((nr == 0) || (nr == 1))
{
printk("%s:error SPIM0 need selected\n",__func__);
return -EFAULT;
}
#endif
#if !defined(CONFIG_SPIM1_RK29)
if((nr == 2) || (nr == 3))
{
printk("%s:error SPIM1 need selected\n",__func__);
return -EFAULT;
}
#endif
switch(nr)
{
case 0:
case 0:
if(!g_spi_test_data[0]->spi)
return -EFAULT;
spi = g_spi_test_data[0]->spi;
spi->chip_select = 0;
break;
case 1:
case 1:
if(!g_spi_test_data[0]->spi)
return -EFAULT;
spi = g_spi_test_data[0]->spi;
spi->chip_select = 1;
break;
case 2:
if(!g_spi_test_data[1]->spi)
return -EFAULT;
spi = g_spi_test_data[1]->spi;
spi->chip_select = 0;
break;
case 3:
if(!g_spi_test_data[1]->spi)
return -EFAULT;
spi = g_spi_test_data[1]->spi;
spi->chip_select = 1;
break;
default:
break;
}
for(i=0; i<10; i++)
@ -99,11 +156,11 @@ static ssize_t spi_test_write(struct file *file,
}
if(!ret)
printk("%s:ok\n",__func__);
printk("%s:bus_num=%d,chip_select=%d,ok\n",__func__,spi->master->bus_num, spi->chip_select);
else
printk("%s:error\n",__func__);
printk("%s:bus_num=%d,chip_select=%d,error\n",__func__,spi->master->bus_num, spi->chip_select);
return count;
return count;
}
@ -121,6 +178,15 @@ static int __devinit spi_test_probe(struct spi_device *spi)
{
struct spi_test_data *spi_test_data;
int ret;
if(!spi)
return -ENOMEM;
if((spi->master->bus_num >= MAX_SPI_BUS_NUM) || (spi->master->bus_num < 0))
{
printk("%s:error:bus_num=%d\n",__func__, spi->master->bus_num);
return -ENOMEM;
}
spi_test_data = (struct spi_test_data *)kzalloc(sizeof(struct spi_test_data), GFP_KERNEL);
if(!spi_test_data){
@ -129,7 +195,6 @@ static int __devinit spi_test_probe(struct spi_device *spi)
}
spi->bits_per_word = 8;
spi->mode = SPI_MODE_0;
spi_test_data->spi = spi;
spi_test_data->dev = &spi->dev;
@ -139,7 +204,7 @@ static int __devinit spi_test_probe(struct spi_device *spi)
return -1;
}
g_spi_test_data = spi_test_data;
g_spi_test_data[spi->master->bus_num] = spi_test_data;
printk("%s:bus_num=%d,ok\n",__func__,spi->master->bus_num);
@ -147,6 +212,12 @@ static int __devinit spi_test_probe(struct spi_device *spi)
}
static const struct spi_device_id spi_test_id[] = {
{"spi_test_bus0", 0},
{"spi_test_bus1", 1},
{},
};
static struct spi_driver spi_test_driver = {
.driver = {
@ -154,12 +225,14 @@ static struct spi_driver spi_test_driver = {
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.id_table = spi_test_id,
.probe = spi_test_probe,
};
static int __init spi_test_init(void)
{
printk("%s\n",__func__);
spi_register_board_info(board_spi_test_devices, ARRAY_SIZE(board_spi_test_devices));
misc_register(&spi_test_misc);
return spi_register_driver(&spi_test_driver);