PS:
The i2c_smbus_write is called at the device's probe.
-----Original Message-----
From: khamouma [mailto:[email protected]]
Sent: Tuesday, March 24, 2009 11:28 AM
To: '[email protected]'
Subject: I2c message at init time
Hi everybody,
I'm coming back here for a new problem...
I can't find out how to send i2c messages at init time (setup.c) I need to
send some commands via i2c in order to make my hdd work I tried to write it
as an i2c driver at init time, but it doesn't seem to work
(smbus_write_byte_data returns -1... But it works in my "normal" modules)
Any idea ?
Here is what I'm doing:
static int __init device_init(void)
{
unsigned sysconf;
int ret;
struct stpio_pin *pin;
stx7100_configure_sata();
stx7100_configure_pwm(&pwm_private_info);
stx7100_configure_ssc(&ssc_private_info);
stx7100_configure_usb();
stx7100_configure_lirc(&lirc_scd);
stx7100_configure_pata(3, 1, IRL0_IRQ);
//vpp_pio = stpio_request_set_pin(2, 7, "flash_VPP", STPIO_OUT, 0);
phy_reset_pin = stpio_request_set_pin(3, 7, "ste100p_reset",
STPIO_OUT, 1);
stx7100_configure_ethernet(0, 0, 0);
ret = platform_add_devices(mtv7109_devices,
ARRAY_SIZE(mtv7109_devices));
//this is the driver I added:
i2c_add_driver(&i2c_MTV7109PioExp_driver);
pin = stpio_request_pin(2,5, "ATAPWR", STPIO_OUT);
/* reset ATAPI pin */
stpio_set_pin(pin, 1);
udelay(10);
stpio_set_pin(pin, 0);
udelay(10);
stpio_set_pin(pin, 1);
udelay(10);
stpio_free_pin(pin);
//ret = platform_add_devices(mtv7109_devices,
ARRAY_SIZE(mtv7109_devices));
//i2c_add_driver(&i2c_MTV7109PioExp_driver);
return ret;
}
device_initcall(device_init);
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