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regulator: fixed: Revert support for ACPI interface

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This reverts commit 13bed58ce8 (regulator: fixed: add support for ACPI
interface).

While there does appear to be a practical need to manage regulators on ACPI
systems, using ad-hoc properties to describe regulators to the kernel presents
a number of problems (especially should ACPI gain first class support for such
things), and there are ongoing discussions as to how to manage this.

Until there is a rough consensus, revert commit 13bed58ce8, which hasn't
been in a released kernel yet as discussed in [1] and the surrounding thread.

[1] http://lkml.kernel.org/r/20170125184949.x2wkoo7kbaaajkjk@sirena.org.uk

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Rutland 2017-01-25 19:30:09 +00:00 committed by Mark Brown
parent d00b74613f
commit 1372cef1c6
1 changed files with 0 additions and 46 deletions
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46
drivers/regulator/fixed.c
View File

@ -30,9 +30,6 @@
#include <linux/of_gpio.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#include <linux/acpi.h>
#include <linux/property.h>
#include <linux/gpio/consumer.h>
struct fixed_voltage_data {
struct regulator_desc desc;
@ -97,44 +94,6 @@ of_get_fixed_voltage_config(struct device *dev,
return config;
}
/**
* acpi_get_fixed_voltage_config - extract fixed_voltage_config structure info
* @dev: device requesting for fixed_voltage_config
* @desc: regulator description
*
* Populates fixed_voltage_config structure by extracting data through ACPI
* interface, returns a pointer to the populated structure of NULL if memory
* alloc fails.
*/
static struct fixed_voltage_config *
acpi_get_fixed_voltage_config(struct device *dev,
const struct regulator_desc *desc)
{
struct fixed_voltage_config *config;
const char *supply_name;
struct gpio_desc *gpiod;
int ret;
config = devm_kzalloc(dev, sizeof(*config), GFP_KERNEL);
if (!config)
return ERR_PTR(-ENOMEM);
ret = device_property_read_string(dev, "supply-name", &supply_name);
if (!ret)
config->supply_name = supply_name;
gpiod = gpiod_get(dev, "gpio", GPIOD_ASIS);
if (IS_ERR(gpiod))
return ERR_PTR(-ENODEV);
config->gpio = desc_to_gpio(gpiod);
config->enable_high = device_property_read_bool(dev,
"enable-active-high");
gpiod_put(gpiod);
return config;
}
static struct regulator_ops fixed_voltage_ops = {
};
@ -155,11 +114,6 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
&drvdata->desc);
if (IS_ERR(config))
return PTR_ERR(config);
} else if (ACPI_HANDLE(&pdev->dev)) {
config = acpi_get_fixed_voltage_config(&pdev->dev,
&drvdata->desc);
if (IS_ERR(config))
return PTR_ERR(config);
} else {
config = dev_get_platdata(&pdev->dev);
}