Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ce5a7e81 authored by Florian Fainelli's avatar Florian Fainelli Committed by Linus Walleij
Browse files

gpio: brcmstb: Set endian flags for big-endian MIPS 



Broadcom MIPS-based STB chips endianness is configured by boot strap,
which also reverses all bus endianness (i.e., big-endian CPU + big
endian bus ==> native endian I/O).

Other architectures (e.g., ARM) either do not support big endian, or
else leave I/O in little endian mode.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: default avatarGregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 780c43dd

drivers/gpio/gpio-brcmstb.c

+14 −1
Original line number Original line Diff line number Diff line
@@ -409,6 +409,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev) 
	int num_banks = 0;

	int num_banks = 0;

	int err;

	int err;

	static int gpio_base;

	static int gpio_base;

	unsigned long flags = 0;





	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

	if (!priv)
@@ -438,6 +439,18 @@ static int brcmstb_gpio_probe(struct platform_device *pdev) 
	if (brcmstb_gpio_sanity_check_banks(dev, np, res))

	if (brcmstb_gpio_sanity_check_banks(dev, np, res))

		return -EINVAL;

		return -EINVAL;





	/*

	 * MIPS endianness is configured by boot strap, which also reverses all

	 * bus endianness (i.e., big-endian CPU + big endian bus ==> native

	 * endian I/O).

	 *

	 * Other architectures (e.g., ARM) either do not support big endian, or

	 * else leave I/O in little endian mode.

	 */

#if defined(CONFIG_MIPS) && defined(__BIG_ENDIAN)

	flags = BGPIOF_BIG_ENDIAN_BYTE_ORDER;

#endif



	of_property_for_each_u32(np, "brcm,gpio-bank-widths", prop, p,

	of_property_for_each_u32(np, "brcm,gpio-bank-widths", prop, p,

			bank_width) {

			bank_width) {

		struct brcmstb_gpio_bank *bank;

		struct brcmstb_gpio_bank *bank;
@@ -466,7 +479,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev) 
		err = bgpio_init(gc, dev, 4,

		err = bgpio_init(gc, dev, 4,

				reg_base + GIO_DATA(bank->id),

				reg_base + GIO_DATA(bank->id),

				NULL, NULL, NULL,

				NULL, NULL, NULL,

				reg_base + GIO_IODIR(bank->id), 0);

				reg_base + GIO_IODIR(bank->id), flags);

		if (err) {

		if (err) {

			dev_err(dev, "bgpio_init() failed\n");

			dev_err(dev, "bgpio_init() failed\n");

			goto fail;

			goto fail;