[PATCH v1 8/8] pwm-pca9685: enable ACPI device found on Galileo Gen2

From: Andy Shevchenko
Date: Tue Sep 22 2015 - 06:11:26 EST


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

Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/pwm/Kconfig | 2 +-
drivers/pwm/pwm-pca9685.c | 14 +++++++++++---
2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 062630a..bb114ef 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -242,7 +242,7 @@ config PWM_MXS

config PWM_PCA9685
tristate "NXP PCA9685 PWM driver"
- depends on OF && I2C
+ depends on I2C
select REGMAP_I2C
help
Generic PWM framework driver for NXP PCA9685 LED controller.
diff --git a/drivers/pwm/pwm-pca9685.c b/drivers/pwm/pwm-pca9685.c
index 70448a6..38ea28b 100644
--- a/drivers/pwm/pwm-pca9685.c
+++ b/drivers/pwm/pwm-pca9685.c
@@ -26,6 +26,8 @@
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/delay.h>
+#include <linux/acpi.h>
+#include <linux/property.h>

/*
* Because the PCA9685 has only one prescaler per chip, changing the period of
@@ -297,7 +299,6 @@ static const struct regmap_config pca9685_regmap_i2c_config = {
static int pca9685_pwm_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- struct device_node *np = client->dev.of_node;
struct pca9685 *pca;
int ret;
int mode2;
@@ -320,12 +321,12 @@ static int pca9685_pwm_probe(struct i2c_client *client,

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;
else
mode2 &= ~MODE2_INVRT;

- if (of_property_read_bool(np, "open-drain"))
+ if (device_property_read_bool(&client->dev, "open-drain"))
mode2 &= ~MODE2_OUTDRV;
else
mode2 |= MODE2_OUTDRV;
@@ -363,6 +364,12 @@ static const struct i2c_device_id pca9685_id[] = {
};
MODULE_DEVICE_TABLE(i2c, pca9685_id);

+static const struct acpi_device_id pca9685_acpi_ids[] = {
+ { "INT3492", 0 },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(acpi, pca9685_acpi_ids);
+
static const struct of_device_id pca9685_dt_ids[] = {
{ .compatible = "nxp,pca9685-pwm", },
{ /* sentinel */ }
@@ -372,6 +379,7 @@ MODULE_DEVICE_TABLE(of, pca9685_dt_ids);
static struct i2c_driver pca9685_i2c_driver = {
.driver = {
.name = "pca9685-pwm",
+ .acpi_match_table = ACPI_PTR(pca9685_acpi_ids),
.of_match_table = pca9685_dt_ids,
},
.probe = pca9685_pwm_probe,
--
2.5.1

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