gpio: Get rid of duplicate of_node assignment in the drivers

GPIO library does copy the of_node from the parent device of
the GPIO chip, there is no need to repeat this in the individual
drivers. Remove these assignment all at once.

For the details one may look into the of_gpio_dev_init() implementation.

While at it, remove duplicate parent device assignment where it is the case.

Signed-off-by: Andy Shevchenko <[e-mail]>
Reviewed-By: Matti Vaittinen <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-adnp.c

···
 	chip->ngpio = num_gpios;
 	chip->label = adnp->client->name;
 	chip->parent = &adnp->client->dev;
-	chip->of_node = chip->parent->of_node;
 	chip->owner = THIS_MODULE;
 
 	if (is_irq_controller) {

drivers/gpio/gpio-amdpt.c

···
 	pt_gpio->gc.request          = pt_gpio_request;
 	pt_gpio->gc.free             = pt_gpio_free;
 	pt_gpio->gc.ngpio            = (uintptr_t)device_get_match_data(dev);
-#if defined(CONFIG_OF_GPIO)
-	pt_gpio->gc.of_node          = dev->of_node;
-#endif
+
 	ret = gpiochip_add_data(&pt_gpio->gc, pt_gpio);
 	if (ret) {
 		dev_err(dev, "Failed to register GPIO lib\n");

drivers/gpio/gpio-bd71828.c

···
 	 * "gpio-reserved-ranges" and exclude them from control
 	 */
 	bdgpio->gpio.ngpio = 4;
-	bdgpio->gpio.of_node = dev->parent->of_node;
 	bdgpio->regmap = dev_get_regmap(dev->parent, NULL);
 	if (!bdgpio->regmap)
 		return -ENODEV;

drivers/gpio/gpio-brcmstb.c

···
 			goto fail;
 		}
 
-		gc->of_node = np;
 		gc->owner = THIS_MODULE;
 		gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pOF", dev->of_node);
 		if (!gc->label) {

drivers/gpio/gpio-davinci.c

···
 #ifdef CONFIG_OF_GPIO
 	chips->chip.of_gpio_n_cells = 2;
 	chips->chip.parent = dev;
-	chips->chip.of_node = dev->of_node;
 	chips->chip.request = gpiochip_generic_request;
 	chips->chip.free = gpiochip_generic_free;
 #endif

drivers/gpio/gpio-eic-sprd.c

···
 	sprd_eic->chip.ngpio = pdata->num_eics;
 	sprd_eic->chip.base = -1;
 	sprd_eic->chip.parent = &pdev->dev;
-	sprd_eic->chip.of_node = pdev->dev.of_node;
 	sprd_eic->chip.direction_input = sprd_eic_direction_input;
 	switch (sprd_eic->type) {
 	case SPRD_EIC_DEBOUNCE:

drivers/gpio/gpio-em.c

···
 	}
 
 	gpio_chip = &p->gpio_chip;
-	gpio_chip->of_node = dev->of_node;
 	gpio_chip->direction_input = em_gio_direction_input;
 	gpio_chip->get = em_gio_get;
 	gpio_chip->direction_output = em_gio_direction_output;

drivers/gpio/gpio-ge.c

···
 	gc->base = -1;
 	gc->ngpio = (u16)(uintptr_t)of_device_get_match_data(&pdev->dev);
 	gc->of_gpio_n_cells = 2;
-	gc->of_node = pdev->dev.of_node;
 
 	/* This function adds a memory mapped GPIO chip */
 	ret = devm_gpiochip_add_data(&pdev->dev, gc, NULL);

drivers/gpio/gpio-grgpio.c

···
 	priv->imask = gc->read_reg(regs + GRGPIO_IMASK);
 	priv->dev = &ofdev->dev;
 
-	gc->of_node = np;
 	gc->owner = THIS_MODULE;
 	gc->to_irq = grgpio_to_irq;
 	gc->label = devm_kasprintf(&ofdev->dev, GFP_KERNEL, "%pOF", np);

drivers/gpio/gpio-gw-pld.c

···
 	gw->chip.base = -1;
 	gw->chip.can_sleep = true;
 	gw->chip.parent = dev;
-	gw->chip.of_node = np;
 	gw->chip.owner = THIS_MODULE;
 	gw->chip.label = dev_name(dev);
 	gw->chip.ngpio = 8;

drivers/gpio/gpio-mt7621.c

···
 	memset(rg, 0, sizeof(*rg));
 
 	spin_lock_init(&rg->lock);
-	rg->chip.of_node = node;
 	rg->bank = bank;
 
 	dat = mtk->base + GPIO_REG_DATA + (rg->bank * GPIO_BANK_STRIDE);

drivers/gpio/gpio-mvebu.c

···
 	mvchip->chip.base = id * MVEBU_MAX_GPIO_PER_BANK;
 	mvchip->chip.ngpio = ngpios;
 	mvchip->chip.can_sleep = false;
-	mvchip->chip.of_node = np;
 	mvchip->chip.dbg_show = mvebu_gpio_dbg_show;
 
 	if (soc_variant == MVEBU_GPIO_SOC_VARIANT_A8K)

drivers/gpio/gpio-omap.c

···
 	bank->is_mpuio = pdata->is_mpuio;
 	bank->non_wakeup_gpios = pdata->non_wakeup_gpios;
 	bank->regs = pdata->regs;
-#ifdef CONFIG_OF_GPIO
-	bank->chip.of_node = of_node_get(node);
-#endif
 
 	if (node) {
 		if (!of_property_read_bool(node, "ti,gpio-always-on"))

drivers/gpio/gpio-palmas.c

···
 	palmas_gpio->gpio_chip.set	= palmas_gpio_set;
 	palmas_gpio->gpio_chip.get	= palmas_gpio_get;
 	palmas_gpio->gpio_chip.parent = &pdev->dev;
-#ifdef CONFIG_OF_GPIO
-	palmas_gpio->gpio_chip.of_node = pdev->dev.of_node;
-#endif
+
 	palmas_pdata = dev_get_platdata(palmas->dev);
 	if (palmas_pdata && palmas_pdata->gpio_base)
 		palmas_gpio->gpio_chip.base = palmas_pdata->gpio_base;

drivers/gpio/gpio-pmic-eic-sprd.c

···
 	pmic_eic->chip.ngpio = SPRD_PMIC_EIC_NR;
 	pmic_eic->chip.base = -1;
 	pmic_eic->chip.parent = &pdev->dev;
-	pmic_eic->chip.of_node = pdev->dev.of_node;
 	pmic_eic->chip.direction_input = sprd_pmic_eic_direction_input;
 	pmic_eic->chip.request = sprd_pmic_eic_request;
 	pmic_eic->chip.free = sprd_pmic_eic_free;

drivers/gpio/gpio-raspberrypi-exp.c

···
 	rpi_gpio->gc.parent = dev;
 	rpi_gpio->gc.label = MODULE_NAME;
 	rpi_gpio->gc.owner = THIS_MODULE;
-	rpi_gpio->gc.of_node = np;
 	rpi_gpio->gc.base = -1;
 	rpi_gpio->gc.ngpio = NUM_GPIO;
 

drivers/gpio/gpio-rda.c

···
 	rda_gpio->chip.label = dev_name(dev);
 	rda_gpio->chip.ngpio = ngpios;
 	rda_gpio->chip.base = -1;
-	rda_gpio->chip.parent = dev;
-	rda_gpio->chip.of_node = np;
 
 	if (rda_gpio->irq >= 0) {
 		rda_gpio->irq_chip.name = "rda-gpio",

drivers/gpio/gpio-rockchip.c

···
 	gc->ngpio = bank->nr_pins;
 	gc->label = bank->name;
 	gc->parent = bank->dev;
-#ifdef CONFIG_OF_GPIO
-	gc->of_node = of_node_get(bank->of_node);
-#endif
 
 	ret = gpiochip_add_data(gc, bank);
 	if (ret) {

drivers/gpio/gpio-sama5d2-piobu.c

···
 	platform_set_drvdata(pdev, piobu);
 	piobu->chip.label = pdev->name;
 	piobu->chip.parent = &pdev->dev;
-	piobu->chip.of_node = pdev->dev.of_node;
 	piobu->chip.owner = THIS_MODULE,
 	piobu->chip.get_direction = sama5d2_piobu_get_direction,
 	piobu->chip.direction_input = sama5d2_piobu_direction_input,

drivers/gpio/gpio-sprd.c

···
 	sprd_gpio->chip.ngpio = SPRD_GPIO_NR;
 	sprd_gpio->chip.base = -1;
 	sprd_gpio->chip.parent = &pdev->dev;
-	sprd_gpio->chip.of_node = pdev->dev.of_node;
 	sprd_gpio->chip.request = sprd_gpio_request;
 	sprd_gpio->chip.free = sprd_gpio_free;
 	sprd_gpio->chip.get = sprd_gpio_get;

drivers/gpio/gpio-stmpe.c

···
 	stmpe_gpio->chip = template_chip;
 	stmpe_gpio->chip.ngpio = stmpe->num_gpios;
 	stmpe_gpio->chip.parent = &pdev->dev;
-	stmpe_gpio->chip.of_node = np;
 	stmpe_gpio->chip.base = -1;
 
 	if (IS_ENABLED(CONFIG_DEBUG_FS))

drivers/gpio/gpio-tc3589x.c

···
 	tc3589x_gpio->chip.ngpio = tc3589x->num_gpio;
 	tc3589x_gpio->chip.parent = &pdev->dev;
 	tc3589x_gpio->chip.base = -1;
-	tc3589x_gpio->chip.of_node = np;
 
 	girq = &tc3589x_gpio->chip.irq;
 	girq->chip = &tc3589x_gpio_irq_chip;

drivers/gpio/gpio-tegra186.c

···
 	gpio->gpio.names = (const char * const *)names;
 
 #if defined(CONFIG_OF_GPIO)
-	gpio->gpio.of_node = pdev->dev.of_node;
 	gpio->gpio.of_gpio_n_cells = 2;
 	gpio->gpio.of_xlate = tegra186_gpio_of_xlate;
 #endif /* CONFIG_OF_GPIO */

drivers/gpio/gpio-tps65218.c

···
 	tps65218_gpio->tps65218 = tps65218;
 	tps65218_gpio->gpio_chip = template_chip;
 	tps65218_gpio->gpio_chip.parent = &pdev->dev;
-#ifdef CONFIG_OF_GPIO
-	tps65218_gpio->gpio_chip.of_node = pdev->dev.of_node;
-#endif
 
 	return devm_gpiochip_add_data(&pdev->dev, &tps65218_gpio->gpio_chip,
 				      tps65218_gpio);

drivers/gpio/gpio-vf610.c

···
 	}
 
 	gc = &port->gc;
-	gc->of_node = np;
 	gc->parent = dev;
 	gc->label = "vf610-gpio";
 	gc->ngpio = VF610_GPIO_PER_PORT;