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Commit 6d0b3078 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by Greg Kroah-Hartman
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Revert "pinctrl: bcm: ns: support updated DT binding as syscon subnode" 



commit 6dba4bdfd7a30e77b848a45404b224588bf989e5 upstream.

This reverts commit a49d784d.

The updated binding was wrong / invalid and has been reverted. There
isn't any upstream kernel DTS using it and Broadcom isn't known to use
it neither. There is close to zero chance this will cause regression for
anyone.

Actually in-kernel bcm5301x.dtsi still uses the old good binding and so
it's broken since the driver update. This revert fixes it.

Signed-off-by: default avatarRafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20211008205938.29925-3-zajec5@gmail.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b7dfc536

drivers/pinctrl/bcm/pinctrl-ns.c

+10 −19
Original line number Diff line number Diff line
@@ -5,7 +5,6 @@ 


#include <linux/err.h>

#include <linux/io.h>

#include <linux/mfd/syscon.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>
@@ -13,7 +12,6 @@ 
#include <linux/pinctrl/pinctrl.h>

#include <linux/pinctrl/pinmux.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>

#include <linux/slab.h>



#define FLAG_BCM4708		BIT(1)
@@ -24,8 +22,7 @@ struct ns_pinctrl { 
	struct device *dev;

	unsigned int chipset_flag;

	struct pinctrl_dev *pctldev;

	struct regmap *regmap;

	u32 offset;

	void __iomem *base;



	struct pinctrl_desc pctldesc;

	struct ns_pinctrl_group *groups;
@@ -232,9 +229,9 @@ static int ns_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev, 
		unset |= BIT(pin_number);

	}



	regmap_read(ns_pinctrl->regmap, ns_pinctrl->offset, &tmp);

	tmp = readl(ns_pinctrl->base);

	tmp &= ~unset;

	regmap_write(ns_pinctrl->regmap, ns_pinctrl->offset, tmp);

	writel(tmp, ns_pinctrl->base);



	return 0;

}
@@ -266,13 +263,13 @@ static const struct of_device_id ns_pinctrl_of_match_table[] = { 
static int ns_pinctrl_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	struct device_node *np = dev->of_node;

	const struct of_device_id *of_id;

	struct ns_pinctrl *ns_pinctrl;

	struct pinctrl_desc *pctldesc;

	struct pinctrl_pin_desc *pin;

	struct ns_pinctrl_group *group;

	struct ns_pinctrl_function *function;

	struct resource *res;

	int i;



	ns_pinctrl = devm_kzalloc(dev, sizeof(*ns_pinctrl), GFP_KERNEL);
@@ -290,18 +287,12 @@ static int ns_pinctrl_probe(struct platform_device *pdev) 
		return -EINVAL;

	ns_pinctrl->chipset_flag = (uintptr_t)of_id->data;



	ns_pinctrl->regmap = syscon_node_to_regmap(of_get_parent(np));

	if (IS_ERR(ns_pinctrl->regmap)) {

		int err = PTR_ERR(ns_pinctrl->regmap);



		dev_err(dev, "Failed to map pinctrl regs: %d\n", err);



		return err;

	}



	if (of_property_read_u32(np, "offset", &ns_pinctrl->offset)) {

		dev_err(dev, "Failed to get register offset\n");

		return -ENOENT;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,

					   "cru_gpio_control");

	ns_pinctrl->base = devm_ioremap_resource(dev, res);

	if (IS_ERR(ns_pinctrl->base)) {

		dev_err(dev, "Failed to map pinctrl regs\n");

		return PTR_ERR(ns_pinctrl->base);

	}



	memcpy(pctldesc, &ns_pinctrl_desc, sizeof(*pctldesc));