I have add some code for spi_board_info just as:
spi_board_info dm355_spi_board_info[] ={
//add by duke 2009.6.18
{
.modalias = "spidev",
.platform_data = NULL,//&davinci_8k_spi_eeprom_info,
.mode = SPI_MODE_0,
.irq = 0,
.max_speed_hz = 2 * 1000 * 1000 /* max sample rate at 3V */ ,
.bus_num = 65535,
.chip_select = 0,
},
.....................
but the spidev_probe cann't been call yet!why?the modalias name is the same as
the spidev_spi name
static struct spi_driver spidev_spi = {
.driver = {
.name = "spidev",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = spidev_probe,
.remove = __devexit_p(spidev_remove),
/* NOTE: suspend/resume methods are not necessary here.
* We don't do anything except pass the requests to/from
* the underlying controller. The refrigerator handles
* most issues; the controller driver handles the rest.
*/
};
2009-06-23
zuowenping
发件人： zuowenping
发送时间： 2009-06-23 10:00:27
收件人： davinci-linux-open-source
抄送：
主题： Re: how can i use spi in dm355?
I have read the source code ,davinci_spi_board_init() must support board info
for the spidev driver ,just like the spi_eeprom example,but i don't know how
can i support the board info? i have insmod the module spidev.ko,but i cann't
prouduce the device inode /dev/spi*.* ,so it must the spidev_probe() function
cann't been callback!
2009-06-23
zuowenping
发件人： zuowenping
发送时间： 2009-06-22 16:34:45
收件人： davinci-linux-open-source
抄送： chris-meng
主题： how can i use spi in dm355?
dear all:
I am using mv_pro_4.0.1 in dm355 platform,now i want to use spi0 and
spi1 to communication with other devices which is like using i2c open() ,
read() ,and write() to various device by sub address in userspace. My linux
kernel is 2.6.10,I have find the spidev.c and spidev_test.c in linux2.6.30,So i
have transplanted the spidev.c as a module in linux kernel 2.6.10,but when i
insmod the module,i cann't find the needful device in /dev/ path,so i cann't
run spidev_test.c to test spi,I think there may be some errors in dm355 device
driver,but i don't know how to modify it? Any help will be appreciated!
2009-06-22
zuowenping
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