Re: [PATCH 4/4] Input: jornada720_ts - get rid of mach/irqs.h and mach/hardware.h includes

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

On Wed, Sep 07, 2016 at 10:51:19AM +0100, Russell King wrote:
> Switch the jornada720 touchscreen driver to obtain its gpio from
> the platform device via gpiolib and derive the interrupt from the
> GPIO, rather than via a hard-coded interrupt number obtained from
> the mach/irqs.h and mach/hardware.h headers.
> 
> Tested-by: Adam Wysocki <armlinux@chmurka.net>
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

Applied, thank you.

> ---
>  arch/arm/mach-sa1100/jornada720.c         | 10 ++++++++++
>  drivers/input/touchscreen/jornada720_ts.c | 21 ++++++++++++++-------
>  2 files changed, 24 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c
> index 2b96f7bc16bd..0a2ca9be00e6 100644
> --- a/arch/arm/mach-sa1100/jornada720.c
> +++ b/arch/arm/mach-sa1100/jornada720.c
> @@ -17,6 +17,7 @@
>  #include <linux/kernel.h>
>  #include <linux/tty.h>
>  #include <linux/delay.h>
> +#include <linux/gpio/machine.h>
>  #include <linux/platform_data/sa11x0-serial.h>
>  #include <linux/platform_device.h>
>  #include <linux/ioport.h>
> @@ -228,6 +229,13 @@ static struct platform_device jornada_kbd_device = {
>  	.resource	= jornada_kbd_resources,
>  };
>  
> +static struct gpiod_lookup_table jornada_ts_gpiod_table = {
> +	.dev_id		= "jornada_ts",
> +	.table		= {
> +		GPIO_LOOKUP("gpio", 9, "penup", GPIO_ACTIVE_HIGH),
> +	},
> +};
> +
>  static struct platform_device jornada_ts_device = {
>  	.name		= "jornada_ts",
>  	.id		= -1,
> @@ -256,6 +264,8 @@ static int __init jornada720_init(void)
>  		GPSR = GPIO_GPIO20;	/* restart gpio20 */
>  		udelay(20);		/* give it some time to restart */
>  
> +		gpiod_add_lookup_table(&jornada_ts_gpiod_table);
> +
>  		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
>  	}
>  
> diff --git a/drivers/input/touchscreen/jornada720_ts.c b/drivers/input/touchscreen/jornada720_ts.c
> index ea3b6a5b83e6..729b3c89324c 100644
> --- a/drivers/input/touchscreen/jornada720_ts.c
> +++ b/drivers/input/touchscreen/jornada720_ts.c
> @@ -13,6 +13,7 @@
>   * HP Jornada 710/720/729 Touchscreen Driver
>   */
>  
> +#include <linux/gpio/consumer.h>
>  #include <linux/platform_device.h>
>  #include <linux/input.h>
>  #include <linux/interrupt.h>
> @@ -20,9 +21,7 @@
>  #include <linux/slab.h>
>  #include <linux/io.h>
>  
> -#include <mach/hardware.h>
>  #include <mach/jornada720.h>
> -#include <mach/irqs.h>
>  
>  MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
>  MODULE_DESCRIPTION("HP Jornada 710/720/728 touchscreen driver");
> @@ -30,6 +29,7 @@ MODULE_LICENSE("GPL v2");
>  
>  struct jornada_ts {
>  	struct input_dev *dev;
> +	struct gpio_desc *gpio;
>  	int x_data[4];		/* X sample values */
>  	int y_data[4];		/* Y sample values */
>  };
> @@ -71,8 +71,8 @@ static irqreturn_t jornada720_ts_interrupt(int irq, void *dev_id)
>  	struct input_dev *input = jornada_ts->dev;
>  	int x, y;
>  
> -	/* If GPIO_GPIO9 is set to high then report pen up */
> -	if (GPLR & GPIO_GPIO(9)) {
> +	/* If gpio is high then report pen up */
> +	if (gpiod_get_value(jornada_ts->gpio)) {
>  		input_report_key(input, BTN_TOUCH, 0);
>  		input_sync(input);
>  	} else {
> @@ -101,7 +101,7 @@ static int jornada720_ts_probe(struct platform_device *pdev)
>  {
>  	struct jornada_ts *jornada_ts;
>  	struct input_dev *input_dev;
> -	int error;
> +	int error, irq;
>  
>  	jornada_ts = devm_kzalloc(&pdev->dev, sizeof(*jornada_ts), GFP_KERNEL);
>  	if (!jornada_ts)
> @@ -113,6 +113,14 @@ static int jornada720_ts_probe(struct platform_device *pdev)
>  
>  	platform_set_drvdata(pdev, jornada_ts);
>  
> +	jornada_ts->gpio = devm_gpiod_get(&pdev->dev, "penup", GPIOD_IN);
> +	if (IS_ERR(jornada_ts->gpio))
> +		return PTR_ERR(jornada_ts->gpio);
> +
> +	irq = gpiod_to_irq(jornada_ts->gpio);
> +	if (irq <= 0)
> +		return irq < 0 ? irq : -EINVAL;
> +
>  	jornada_ts->dev = input_dev;
>  
>  	input_dev->name = "HP Jornada 7xx Touchscreen";
> @@ -125,8 +133,7 @@ static int jornada720_ts_probe(struct platform_device *pdev)
>  	input_set_abs_params(input_dev, ABS_X, 270, 3900, 0, 0);
>  	input_set_abs_params(input_dev, ABS_Y, 180, 3700, 0, 0);
>  
> -	error = devm_request_irq(&pdev->dev, IRQ_GPIO9,
> -				 jornada720_ts_interrupt,
> +	error = devm_request_irq(&pdev->dev, irq, jornada720_ts_interrupt,
>  				 IRQF_TRIGGER_RISING,
>  				 "HP7XX Touchscreen driver", pdev);
>  	if (error) {
> -- 
> 2.1.0
> 

-- 
Dmitry