No subject

appropriate prefix here.

Otherwise this patch looks okay.

g.


> +{
> +	struct ti_ssp_gpio_chip *gpio = to_ssp_gpio_chip(chip);
> +	int error;
> +
> +	spin_lock(&gpio->lock);
> +
> +	gpio->iosel &= ~SSP_PIN_MASK(gpio_num);
> +	gpio->iosel |=  SSP_PIN_SEL(gpio_num, SSP_OUT);
> +
> +	error = ti_ssp_set_iosel(gpio->dev, gpio->iosel);
> +
> +	if (error < 0)
> +		goto error;
> +
> +	if (val)
> +		gpio->out |= BIT(gpio_num);
> +	else
> +		gpio->out &= ~BIT(gpio_num);
> +
> +	error = ti_ssp_raw_write(gpio->dev, gpio->out);
> +
> +error:
> +	spin_unlock(&gpio->lock);
> +	return error;
> +}
> +
> +static int value_get(struct gpio_chip *chip, unsigned gpio_num)
> +{
> +	struct ti_ssp_gpio_chip *gpio = to_ssp_gpio_chip(chip);
> +	int ret;
> +
> +	spin_lock(&gpio->lock);
> +
> +	ret = ti_ssp_raw_read(gpio->dev);
> +	if (ret >= 0)
> +		ret = !!(ret & BIT(gpio_num));
> +
> +	spin_unlock(&gpio->lock);
> +	return ret;
> +}
> +
> +static void value_set(struct gpio_chip *chip, unsigned gpio_num, int val)
> +{
> +	struct ti_ssp_gpio_chip *gpio = to_ssp_gpio_chip(chip);
> +
> +	spin_lock(&gpio->lock);
> +
> +	if (val)
> +		gpio->out |= BIT(gpio_num);
> +	else
> +		gpio->out &= ~BIT(gpio_num);
> +
> +	ti_ssp_raw_write(gpio->dev, gpio->out);
> +
> +	spin_unlock(&gpio->lock);
> +}
> +
> +static int __devinit ti_ssp_gpio_probe(struct platform_device *pdev)
> +{
> +	const struct ti_ssp_gpio_data *pdata = pdev->dev.platform_data;
> +	struct device *dev = &pdev->dev;
> +	struct ti_ssp_gpio_chip *gpio;
> +	int error;
> +
> +	if (!pdata) {
> +		dev_err(dev, "platform data not found\n");
> +		return -EINVAL;
> +	}
> +
> +	gpio = kzalloc(sizeof(*gpio), GFP_KERNEL);
> +	if (!gpio) {
> +		dev_err(dev, "cannot allocate driver data\n");
> +		return -ENOMEM;
> +	}
> +
> +	gpio->dev = dev;
> +	gpio->iosel = SSP_PIN_SEL(0, SSP_IN) | SSP_PIN_SEL(1, SSP_IN) |
> +		      SSP_PIN_SEL(2, SSP_IN) | SSP_PIN_SEL(3, SSP_IN);
> +	error = ti_ssp_set_iosel(gpio->dev, gpio->iosel);
> +	if (error < 0) {
> +		dev_err(dev, "gpio io setup failed (%d)\n", error);
> +		goto error;
> +	}
> +
> +	spin_lock_init(&gpio->lock);
> +	platform_set_drvdata(pdev, gpio);
> +
> +	gpio->chip.base  = pdata->start;
> +	gpio->chip.ngpio = 4;
> +	gpio->chip.dev   = &pdev->dev;
> +	gpio->chip.label = "ti_ssp_gpio";
> +	gpio->chip.owner = THIS_MODULE;
> +	gpio->chip.get   = value_get;
> +	gpio->chip.set   = value_set;
> +	gpio->chip.direction_input  = direction_in;
> +	gpio->chip.direction_output = direction_out;
> +
> +	error = gpiochip_add(&gpio->chip);
> +	if (error < 0) {
> +		dev_err(dev, "gpio chip registration failed (%d)\n", error);
> +		goto error;
> +	}
> +
> +	dev_info(dev, "ssp gpio interface registered\n");
> +	return 0;
> +
> +error:
> +	kfree(gpio);
> +	return error;
> +}
> +
> +static int __devexit ti_ssp_gpio_remove(struct platform_device *pdev)
> +{
> +	struct ti_ssp_gpio_chip *gpio = platform_get_drvdata(pdev);
> +	int error;
> +
> +	error = gpiochip_remove(&gpio->chip);
> +	if (error < 0)
> +		return error;
> +	kfree(gpio);
> +	return 0;
> +}
> +
> +static struct platform_driver ti_ssp_gpio_driver = {
> +	.probe		= ti_ssp_gpio_probe,
> +	.remove		= __devexit_p(ti_ssp_gpio_remove),
> +	.driver		= {
> +		.name	= "ti-ssp-gpio",
> +		.owner	= THIS_MODULE,
> +	},
> +};
> +
> +static int __init ti_ssp_gpio_init(void)
> +{
> +	return platform_driver_register(&ti_ssp_gpio_driver);
> +}
> +module_init(ti_ssp_gpio_init);
> +
> +static void __exit ti_ssp_gpio_exit(void)
> +{
> +	platform_driver_unregister(&ti_ssp_gpio_driver);
> +}
> +module_exit(ti_ssp_gpio_exit);
> +
> +MODULE_DESCRIPTION("GPIO interface for TI-SSP");
> +MODULE_AUTHOR("Cyril Chemparathy <cyril at ti.com>");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:ti-ssp-gpio");
> diff --git a/include/linux/mfd/ti_ssp.h b/include/linux/mfd/ti_ssp.h
> index dbb4b43..10c65bb 100644
> --- a/include/linux/mfd/ti_ssp.h
> +++ b/include/linux/mfd/ti_ssp.h
> @@ -38,6 +38,10 @@ struct ti_ssp_spi_data {
>  	void		(*select)(int cs);
>  };
>  
> +struct ti_ssp_gpio_data {
> +	int		start;
> +};
> +
>  /*
>   * Sequencer port IO pin configuration bits.  These do not correlate 1-1 with
>   * the hardware.  The iosel field in the port data combines iosel1 and iosel2,
> -- 
> 1.7.1
> 
> 
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