Commit 5dd9332c authored by Jose Javier Rodriguez Barbarin's avatar Jose Javier Rodriguez Barbarin Committed by Bartosz Golaszewski
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gpio: menz127: add support for 16Z034 and 16Z037 GPIO controllers 



The 16Z034 and 16Z037 are 8 bits GPIO controllers that share the
same registers and features of the 16Z127 GPIO controller.

Signed-off-by: default avatarJose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@duagon.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251118083115.9545-1-dev-josejavier.rodriguez@duagon.com


Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 10c15296

drivers/gpio/gpio-menz127.c

+23 −3
Original line number Diff line number Diff line
@@ -24,6 +24,11 @@ 
#define MEN_Z127_ODER	0x1C

#define GPIO_TO_DBCNT_REG(gpio)	((gpio * 4) + 0x80)



/* MEN Z127 supported model ids*/

#define MEN_Z127_ID	0x7f

#define MEN_Z034_ID	0x22

#define MEN_Z037_ID	0x25



#define MEN_Z127_DB_MIN_US	50

/* 16 bit compare register. Each bit represents 50us */

#define MEN_Z127_DB_MAX_US	(0xffff * MEN_Z127_DB_MIN_US)
@@ -140,6 +145,7 @@ static int men_z127_probe(struct mcb_device *mdev, 
	struct men_z127_gpio *men_z127_gpio;

	struct device *dev = &mdev->dev;

	int ret;

	unsigned long sz;



	men_z127_gpio = devm_kzalloc(dev, sizeof(struct men_z127_gpio),

				     GFP_KERNEL);
@@ -163,9 +169,21 @@ static int men_z127_probe(struct mcb_device *mdev, 


	mcb_set_drvdata(mdev, men_z127_gpio);



	switch (mdev->id) {

	case MEN_Z127_ID:

		sz = 4;

		break;

	case MEN_Z034_ID:

	case MEN_Z037_ID:

		sz = 1;

		break;

	default:

		return dev_err_probe(&mdev->dev, -EINVAL, "no size found for id %d", mdev->id);

	}



	config = (struct gpio_generic_chip_config) {

		.dev = &mdev->dev,

		.sz = 4,

		.sz = sz,

		.dat = men_z127_gpio->reg_base + MEN_Z127_PSR,

		.set = men_z127_gpio->reg_base + MEN_Z127_CTRL,

		.dirout = men_z127_gpio->reg_base + MEN_Z127_GPIODR,
@@ -186,7 +204,9 @@ static int men_z127_probe(struct mcb_device *mdev, 
}



static const struct mcb_device_id men_z127_ids[] = {

	{ .device = 0x7f },

	{ .device = MEN_Z127_ID },

	{ .device = MEN_Z034_ID },

	{ .device = MEN_Z037_ID },

	{ }

};

MODULE_DEVICE_TABLE(mcb, men_z127_ids);
@@ -201,7 +221,7 @@ static struct mcb_driver men_z127_driver = { 
module_mcb_driver(men_z127_driver);



MODULE_AUTHOR("Andreas Werner <andreas.werner@men.de>");

MODULE_DESCRIPTION("MEN 16z127 GPIO Controller");

MODULE_DESCRIPTION("MEN GPIO Controller");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("mcb:16z127");

MODULE_IMPORT_NS("MCB");