gpio: brcmstb: Set endian flags for big-endian MIPS (ce5a7e81) · Commits · 戴 / test

drivers/gpio/gpio-brcmstb.c

+14 −1

Original line number	Diff line number	Diff line
		@@ -409,6 +409,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
		int num_banks = 0;
		int err;
		static int gpio_base;
		unsigned long flags = 0;

		priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
		if (!priv)
		@@ -438,6 +439,18 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
		if (brcmstb_gpio_sanity_check_banks(dev, np, res))
		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,
		bank_width) {
		struct brcmstb_gpio_bank *bank;
		@@ -466,7 +479,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
		err = bgpio_init(gc, dev, 4,
		reg_base + GIO_DATA(bank->id),
		NULL, NULL, NULL,
		reg_base + GIO_IODIR(bank->id), 0);
		reg_base + GIO_IODIR(bank->id), flags);
		if (err) {
		dev_err(dev, "bgpio_init() failed\n");
		goto fail;