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pwm-pca9685: enable ACPI device found on Galileo Gen2

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There is a chip connected to i2c bus on Intel Galileo Gen2 board. Enable it via
ACPI ID INT3492.

Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Andy Shevchenko 2015-10-07 13:18:49 +03:00 committed by Thierry Reding
parent 7e3b7dc76c
commit 912b843904
2 changed files with 17 additions and 5 deletions
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2
drivers/pwm/Kconfig
View File

@ -272,7 +272,7 @@ config PWM_MXS
config PWM_PCA9685 config PWM_PCA9685
tristate "NXP PCA9685 PWM driver" tristate "NXP PCA9685 PWM driver"
depends on OF && I2C depends on I2C
select REGMAP_I2C select REGMAP_I2C
help help
Generic PWM framework driver for NXP PCA9685 LED controller. Generic PWM framework driver for NXP PCA9685 LED controller.

20
drivers/pwm/pwm-pca9685.c
View File

@ -19,9 +19,11 @@
* this program. If not, see <http://www.gnu.org/licenses/>. * this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#include <linux/acpi.h>
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/pwm.h> #include <linux/pwm.h>
#include <linux/regmap.h> #include <linux/regmap.h>
#include <linux/slab.h> #include <linux/slab.h>
@ -297,7 +299,6 @@ static const struct regmap_config pca9685_regmap_i2c_config = {
static int pca9685_pwm_probe(struct i2c_client *client, static int pca9685_pwm_probe(struct i2c_client *client,
const struct i2c_device_id *id) const struct i2c_device_id *id)
{ {
struct device_node *np = client->dev.of_node;
struct pca9685 *pca; struct pca9685 *pca;
int ret; int ret;
int mode2; int mode2;
@ -320,12 +321,12 @@ static int pca9685_pwm_probe(struct i2c_client *client,
regmap_read(pca->regmap, PCA9685_MODE2, &mode2); regmap_read(pca->regmap, PCA9685_MODE2, &mode2);
if (of_property_read_bool(np, "invert")) if (device_property_read_bool(&client->dev, "invert"))
mode2 |= MODE2_INVRT; mode2 |= MODE2_INVRT;
else else
mode2 &= ~MODE2_INVRT; mode2 &= ~MODE2_INVRT;
if (of_property_read_bool(np, "open-drain")) if (device_property_read_bool(&client->dev, "open-drain"))
mode2 &= ~MODE2_OUTDRV; mode2 &= ~MODE2_OUTDRV;
else else
mode2 |= MODE2_OUTDRV; mode2 |= MODE2_OUTDRV;
@ -363,16 +364,27 @@ static const struct i2c_device_id pca9685_id[] = {
}; };
MODULE_DEVICE_TABLE(i2c, pca9685_id); MODULE_DEVICE_TABLE(i2c, pca9685_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id pca9685_acpi_ids[] = {
{ "INT3492", 0 },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(acpi, pca9685_acpi_ids);
#endif
#ifdef CONFIG_OF
static const struct of_device_id pca9685_dt_ids[] = { static const struct of_device_id pca9685_dt_ids[] = {
{ .compatible = "nxp,pca9685-pwm", }, { .compatible = "nxp,pca9685-pwm", },
{ /* sentinel */ } { /* sentinel */ }
}; };
MODULE_DEVICE_TABLE(of, pca9685_dt_ids); MODULE_DEVICE_TABLE(of, pca9685_dt_ids);
#endif
static struct i2c_driver pca9685_i2c_driver = { static struct i2c_driver pca9685_i2c_driver = {
.driver = { .driver = {
.name = "pca9685-pwm", .name = "pca9685-pwm",
.of_match_table = pca9685_dt_ids, .acpi_match_table = ACPI_PTR(pca9685_acpi_ids),
.of_match_table = of_match_ptr(pca9685_dt_ids),
}, },
.probe = pca9685_pwm_probe, .probe = pca9685_pwm_probe,
.remove = pca9685_pwm_remove, .remove = pca9685_pwm_remove,