linux-kernel - Re: [PATCH v3 6/6] pwm-pca9685: enable ACPI device found on Galileo Gen2

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Date:	Thu, 15 Oct 2015 13:21:45 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-acpi@...r.kernel.org, linux-i2c@...r.kernel.org,
	Lee Jones <lee.jones@...aro.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	"Rafael J . Wysocki" <rjw@...ysocki.net>,
	Mika Westerberg <mika.westerberg@...el.com>,
	"Puustinen, Ismo" <ismo.puustinen@...el.com>,
	"Pandruvada, Srinivas" <srinivas.pandruvada@...el.com>,
	linux-kernel@...r.kernel.org
Cc:	Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH v3 6/6] pwm-pca9685: enable ACPI device found on Galileo
 Gen2

On Wed, 2015-10-07 at 13:18 +0300, Andy Shevchenko wrote:
> There is a chip connected to i2c bus on Intel Galileo Gen2 board. 
> Enable it via
> ACPI ID INT3492.

Thierry, can you Ack or take this one, please?

> 
> Cc: Thierry Reding <thierry.reding@...il.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/pwm/Kconfig       |  2 +-
>  drivers/pwm/pwm-pca9685.c | 20 ++++++++++++++++----
>  2 files changed, 17 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> index 0cfaf6b..2f4641a 100644
> --- a/drivers/pwm/Kconfig
> +++ b/drivers/pwm/Kconfig
> @@ -272,7 +272,7 @@ 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..117fccf 100644
> --- a/drivers/pwm/pwm-pca9685.c
> +++ b/drivers/pwm/pwm-pca9685.c
> @@ -19,9 +19,11 @@
>   * this program.  If not, see <http://www.gnu.org/licenses/>.
>   */
>  
> +#include <linux/acpi.h>
>  #include <linux/i2c.h>
>  #include <linux/module.h>
>  #include <linux/platform_device.h>
> +#include <linux/property.h>
>  #include <linux/pwm.h>
>  #include <linux/regmap.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,
>  				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;
> @@ -363,16 +364,27 @@ static const struct i2c_device_id 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[] = {
>  	{ .compatible = "nxp,pca9685-pwm", },
>  	{ /* sentinel */ }
>  };
>  MODULE_DEVICE_TABLE(of, pca9685_dt_ids);
> +#endif
>  
>  static struct i2c_driver pca9685_i2c_driver = {
>  	.driver = {
>  		.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,
>  	.remove = pca9685_pwm_remove,

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy
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