Commit 79bb5c7f authored by Basavaraj Natikar's avatar Basavaraj Natikar Committed by Linus Walleij
Browse files

pinctrl: amd: Add amd_get_iomux_res function 



Presently there is no way to change pinmux configuration run time.
Hence add a function to get IOMUX resource which can be used to
configure IOMUX GPIO pins run time.

Signed-off-by: default avatarBasavaraj Natikar <Basavaraj.Natikar@amd.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220601152900.1012813-6-Basavaraj.Natikar@amd.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent a1e9bb59

drivers/pinctrl/pinctrl-amd.c

+25 −0
Original line number Diff line number Diff line
@@ -963,6 +963,30 @@ static struct pinctrl_desc amd_pinctrl_desc = { 
	.owner = THIS_MODULE,

};



static void amd_get_iomux_res(struct amd_gpio *gpio_dev)

{

	struct pinctrl_desc *desc = &amd_pinctrl_desc;

	struct device *dev = &gpio_dev->pdev->dev;

	int index;



	index = device_property_match_string(dev, "pinctrl-resource-names",  "iomux");

	if (index < 0) {

		dev_warn(dev, "failed to get iomux index\n");

		goto out_no_pinmux;

	}



	gpio_dev->iomux_base = devm_platform_ioremap_resource(gpio_dev->pdev, index);

	if (IS_ERR(gpio_dev->iomux_base)) {

		dev_warn(dev, "Failed to get iomux %d io resource\n", index);

		goto out_no_pinmux;

	}



	return;



out_no_pinmux:

	desc->pmxops = NULL;

}



static int amd_gpio_probe(struct platform_device *pdev)

{

	int ret = 0;
@@ -1020,6 +1044,7 @@ static int amd_gpio_probe(struct platform_device *pdev) 
	gpio_dev->ngroups = ARRAY_SIZE(kerncz_groups);



	amd_pinctrl_desc.name = dev_name(&pdev->dev);

	amd_get_iomux_res(gpio_dev);

	gpio_dev->pctrl = devm_pinctrl_register(&pdev->dev, &amd_pinctrl_desc,

						gpio_dev);

	if (IS_ERR(gpio_dev->pctrl)) {

drivers/pinctrl/pinctrl-amd.h

+1 −0
Original line number Diff line number Diff line
@@ -83,6 +83,7 @@ struct amd_function { 
struct amd_gpio {

	raw_spinlock_t          lock;

	void __iomem            *base;

	void __iomem            *iomux_base;



	const struct pingroup *groups;

	u32 ngroups;