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hwmon: (lm70) Add support for ACPI 

This commit adds support for lm70 commpatible drivers with systems that
use ACPI.

Signed-off-by: Andrej Picej <andpicej@gmail.com>
[groeck: Fix various issues seen if CONFIG_ACPI=n]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Andrej Picej 2020-04-23 15:27:33 +02:00 committed by Guenter Roeck
parent b8a13e5e8f
commit b58bd4c6df
1 changed files with 40 additions and 7 deletions
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47
drivers/hwmon/lm70.c
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@ -25,7 +25,7 @@
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/of_device.h>
#include <linux/acpi.h>
#define DRVNAME "lm70"
@ -148,18 +148,50 @@ static const struct of_device_id lm70_of_ids[] = {
MODULE_DEVICE_TABLE(of, lm70_of_ids);
#endif
#ifdef CONFIG_ACPI
static const struct acpi_device_id lm70_acpi_ids[] = {
{
.id = "LM000070",
.driver_data = LM70_CHIP_LM70,
},
{
.id = "TMP00121",
.driver_data = LM70_CHIP_TMP121,
},
{
.id = "LM000071",
.driver_data = LM70_CHIP_LM71,
},
{
.id = "LM000074",
.driver_data = LM70_CHIP_LM74,
},
{},
};
MODULE_DEVICE_TABLE(acpi, lm70_acpi_ids);
#endif
static int lm70_probe(struct spi_device *spi)
{
const struct of_device_id *match;
const struct of_device_id *of_match;
struct device *hwmon_dev;
struct lm70 *p_lm70;
int chip;
match = of_match_device(lm70_of_ids, &spi->dev);
if (match)
chip = (int)(uintptr_t)match->data;
else
chip = spi_get_device_id(spi)->driver_data;
of_match = of_match_device(lm70_of_ids, &spi->dev);
if (of_match)
chip = (int)(uintptr_t)of_match->data;
else {
#ifdef CONFIG_ACPI
const struct acpi_device_id *acpi_match;
acpi_match = acpi_match_device(lm70_acpi_ids, &spi->dev);
if (acpi_match)
chip = (int)(uintptr_t)acpi_match->driver_data;
else
#endif
chip = spi_get_device_id(spi)->driver_data;
}
/* signaling is SPI_MODE_0 */
if (spi->mode & (SPI_CPOL | SPI_CPHA))
@ -195,6 +227,7 @@ static struct spi_driver lm70_driver = {
.driver = {
.name = "lm70",
.of_match_table = of_match_ptr(lm70_of_ids),
.acpi_match_table = ACPI_PTR(lm70_acpi_ids),
},
.id_table = lm70_ids,
.probe = lm70_probe,