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leds: lp3952: Remove ACPI support for lp3952 

In ACPI world any ID should be carefully chosen and registered
officially. The discussion [1] as I read it gets to wilful assignment
an ID for non-existing real DSDT example.

Rafael already told [2] how this device would be enumerated using
compatible string. To be more precise look at the possible DSDT excerpt
below:

	Device (LDX0) {
		Name (_HID, "PRP0001")
		Name (_DDN, "TI LP3952 compatible led driver")
		...
	})

	Name (_DSD, Package () {
		ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
		Package () {
			Package () {"compatible", "ti,lp3952"},
			...
		}
	})

Based on above, remove non-official ACPI IDs and enumeration from the
driver.

Note: currently driver has no compatible strings at all, to make above
working one should add at least one.

[1] https://e2e.ti.com/support/power_management/led_driver/f/192/t/524926
[2] https://www.spinics.net/lists/linux-acpi/msg67125.html

Cc: Tony Makkiel <tony.makkiel@daqri.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
This commit is contained in:
Andy Shevchenko 2017-03-23 21:17:48 +02:00 committed by Jacek Anaszewski
parent ac57245215
commit 9696217847
2 changed files with 0 additions and 12 deletions
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1
drivers/leds/Kconfig
View File

@ -249,7 +249,6 @@ config LEDS_LP3952
tristate "LED Support for TI LP3952 2 channel LED driver"
depends on LEDS_CLASS
depends on I2C
depends on ACPI
depends on GPIOLIB
select REGMAP_I2C
help

11
drivers/leds/leds-lp3952.c
View File

@ -10,7 +10,6 @@
*
*/
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
@ -276,19 +275,9 @@ static const struct i2c_device_id lp3952_id[] = {
};
MODULE_DEVICE_TABLE(i2c, lp3952_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id lp3952_acpi_match[] = {
{"TXNW3952", 0},
{}
};
MODULE_DEVICE_TABLE(acpi, lp3952_acpi_match);
#endif
static struct i2c_driver lp3952_i2c_driver = {
.driver = {
.name = LP3952_NAME,
.acpi_match_table = ACPI_PTR(lp3952_acpi_match),
},
.probe = lp3952_probe,
.remove = lp3952_remove,