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Commit 1dfb4a0d authored by Linus Walleij's avatar Linus Walleij
Browse files

gpio: stmpe: enforce device tree only mode 



Require that device tree be used with STMPE (all platforms use this)
and enforce OF_GPIO, then delete the platform data.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent ee65ef60

drivers/gpio/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -644,6 +644,7 @@ config GPIO_SX150X 
config GPIO_STMPE

	bool "STMPE GPIOs"

	depends on MFD_STMPE

	depends on OF_GPIO

	select GPIOLIB_IRQCHIP

	help

	  This enables support for the GPIOs found on the STMPE I/O

drivers/gpio/gpio-stmpe.c

+3 −20
Original line number Diff line number Diff line
@@ -30,7 +30,7 @@ struct stmpe_gpio { 
	struct stmpe *stmpe;

	struct device *dev;

	struct mutex irq_lock;

	unsigned norequest_mask;

	u32 norequest_mask;

	/* Caches of interrupt control registers for bus_lock */

	u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];

	u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
@@ -340,13 +340,10 @@ static int stmpe_gpio_probe(struct platform_device *pdev) 
{

	struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);

	struct device_node *np = pdev->dev.of_node;

	struct stmpe_gpio_platform_data *pdata;

	struct stmpe_gpio *stmpe_gpio;

	int ret;

	int irq = 0;



	pdata = stmpe->pdata->gpio;



	irq = platform_get_irq(pdev, 0);



	stmpe_gpio = kzalloc(sizeof(struct stmpe_gpio), GFP_KERNEL);
@@ -360,17 +357,12 @@ static int stmpe_gpio_probe(struct platform_device *pdev) 
	stmpe_gpio->chip = template_chip;

	stmpe_gpio->chip.ngpio = stmpe->num_gpios;

	stmpe_gpio->chip.dev = &pdev->dev;

#ifdef CONFIG_OF

	stmpe_gpio->chip.of_node = np;

#endif

	stmpe_gpio->chip.base = -1;



	if (IS_ENABLED(CONFIG_DEBUG_FS))

                stmpe_gpio->chip.dbg_show = stmpe_dbg_show;



	if (pdata)

		stmpe_gpio->norequest_mask = pdata->norequest_mask;

	else if (np)

	of_property_read_u32(np, "st,norequest-mask",

			&stmpe_gpio->norequest_mask);
@@ -414,9 +406,6 @@ static int stmpe_gpio_probe(struct platform_device *pdev) 
					     NULL);

	}



	if (pdata && pdata->setup)

		pdata->setup(stmpe, stmpe_gpio->chip.base);



	platform_set_drvdata(pdev, stmpe_gpio);



	return 0;
@@ -433,15 +422,9 @@ static int stmpe_gpio_remove(struct platform_device *pdev) 
{

	struct stmpe_gpio *stmpe_gpio = platform_get_drvdata(pdev);

	struct stmpe *stmpe = stmpe_gpio->stmpe;

	struct stmpe_gpio_platform_data *pdata = stmpe->pdata->gpio;



	if (pdata && pdata->remove)

		pdata->remove(stmpe, stmpe_gpio->chip.base);



	gpiochip_remove(&stmpe_gpio->chip);



	stmpe_disable(stmpe, STMPE_BLOCK_GPIO);



	kfree(stmpe_gpio);



	return 0;

include/linux/mfd/stmpe.h

+0 −16
Original line number Diff line number Diff line
@@ -117,20 +117,6 @@ extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks); 


#define STMPE_GPIO_NOREQ_811_TOUCH	(0xf0)



/**

 * struct stmpe_gpio_platform_data - STMPE GPIO platform data

 * @norequest_mask: bitmask specifying which GPIOs should _not_ be

 *		    requestable due to different usage (e.g. touch, keypad)

 *		    STMPE_GPIO_NOREQ_* macros can be used here.

 * @setup: board specific setup callback.

 * @remove: board specific remove callback

 */

struct stmpe_gpio_platform_data {

	unsigned norequest_mask;

	void (*setup)(struct stmpe *stmpe, unsigned gpio_base);

	void (*remove)(struct stmpe *stmpe, unsigned gpio_base);

};



/**

 * struct stmpe_ts_platform_data - stmpe811 touch screen controller platform

 * data
@@ -182,7 +168,6 @@ struct stmpe_ts_platform_data { 
 * @irq_over_gpio: true if gpio is used to get irq

 * @irq_gpio: gpio number over which irq will be requested (significant only if

 *	      irq_over_gpio is true)

 * @gpio: GPIO-specific platform data

 * @ts: touchscreen-specific platform data

 */

struct stmpe_platform_data {
@@ -194,7 +179,6 @@ struct stmpe_platform_data { 
	int irq_gpio;

	int autosleep_timeout;



	struct stmpe_gpio_platform_data *gpio;

	struct stmpe_ts_platform_data *ts;

};