Hi ml,
I run into a little problem, which I don't know how to solve it.
I am using the eg20t i2c bus and a custom platform init
driver, which gets started after eg20t is ready.
And there I do the following:
/* buzzer and relay */
static struct gpio_led _gpio[] = {
{
.name = "relay",
.gpio = 0,
.active_low = 0,
.default_state = LEDS_GPIO_DEFSTATE_OFF,
.default_trigger = "timer",
}
};
static struct gpio_led_platform_data _gpio_data = {
.num_leds = ARRAY_SIZE(_gpio),
.leds = _gpio,
};
static struct platform_device _gpio_hw = {
.name = "leds-gpio",
.dev.platform_data = &_gpio_data,
};
static struct platform_device *devices_tc[] = {
&ot1300_gpio_hw,
};
int tunnelcreek_init(void)
{
struct i2c_adapter *i2c_adap;
/* we use the integrated i2c adapter */
i2c_adap = i2c_get_adapter(0);
if (!i2c_adap)
return -EIO;
eeprom = i2c_new_device(i2c_adap, &i2c_eeprom);
pca953x = i2c_new_device(i2c_adap, &pca9555_info);
lm75 = i2c_new_device(i2c_adap, &lm75_info);
platform_add_devices(devices_tc, ARRAY_SIZE(devices_tc));
return 0;
}
If I run this code I get following messages:
[ 1.552122] i2c 0-0050: uevent
[ 1.552307] at24 0-0050: probe
[ 1.552361] i2c 0-0051: uevent
[ 1.552530] dummy 0-0051: probe
[ 1.552544] i2c i2c-0: client [dummy] registered with bus id 0-0051
[ 1.552559] at24 0-0050: 512 byte 24c04 EEPROM, writable, 16 bytes/write
[ 1.552644] i2c i2c-0: master_xfer[0] W, addr=0x50, len=1
[ 1.552655] i2c i2c-0: master_xfer[1] R, addr=0x50, len=24
[ 1.557235] i2c i2c-0: master_xfer[0] W, addr=0x51, len=1
[ 1.557248] i2c i2c-0: master_xfer[1] R, addr=0x51, len=20
[ 1.560820] i2c i2c-0: client [24c04] registered with bus id 0-0050
[ 1.560944] i2c 0-0021: uevent
[ 1.561136] i2c i2c-0: client [pca9555] registered with bus id 0-0021
[ 1.561197] i2c 0-0048: uevent
[ 1.561357] i2c i2c-0: client [lm75] registered with bus id 0-0048
[ 1.561638] leds-gpio: probe of leds-gpio.0 failed with error -22
[ 1.568354] VFS: Mounted root (ext2 filesystem) readonly on device 8:2.
[ 1.569161] devtmpfs: mounted
[ 1.569307] Freeing unused kernel memory: 284k freed
[ 1.569725] Write protecting the kernel text: 2096k
[ 1.569880] Write protecting the kernel read-only data: 1008k
[ 1.577121] hub 1-1:1.0: USB hub found
[ 1.579246] hub 1-1:1.0: 3 ports detected
[ 1.795723] udev[1136]: starting version 164
[ 1.951100] usb 5-1: new low speed USB device number 2 using ohci_hcd
[ 1.968166] i2c 0-0021: uevent
[ 1.968284] i2c 0-0048: uevent
[ 1.968400] at24 0-0050: uevent
[ 1.968510] dummy 0-0051: uevent
[ 2.206885] i2c 0-0021: uevent
[ 2.208069] i2c 0-0048: uevent
[ 2.209305] at24 0-0050: uevent
[ 2.209928] at24 0-0050: uevent
[ 2.210459] dummy 0-0051: uevent
[ 2.211089] dummy 0-0051: uevent
[ 2.245582] pca953x 0-0021: probe
[ 2.245607] i2c i2c-0: master_xfer[0] W, addr=0x21, len=1
[ 2.245624] i2c i2c-0: master_xfer[1] R, addr=0x21, len=2
[ 2.250589] i2c i2c-0: master_xfer[0] W, addr=0x21, len=1
[ 2.250607] i2c i2c-0: master_xfer[1] R, addr=0x21, len=2
[ 2.251338] i2c i2c-0: master_xfer[0] W, addr=0x21, len=3
[ 2.251900] pca953x 0-0021: interrupt support not compiled in
[ 2.252236] i2c-core: driver [pca953x] registered
[
The problem is that leds-gpio gets loaded before pca953x driver
is ready. So no gpio's are available. Whats the best way to fix this?
Thanks
--
Christian Gmeiner, MSc
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