From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/gpio/gpio-bcm-kona.c | 52 ++++++++++++++++--------------------- 1 file changed, 22 insertions(+), 30 deletions(-) (limited to 'kernel/drivers/gpio/gpio-bcm-kona.c') diff --git a/kernel/drivers/gpio/gpio-bcm-kona.c b/kernel/drivers/gpio/gpio-bcm-kona.c index b164ce837..33a1f9779 100644 --- a/kernel/drivers/gpio/gpio-bcm-kona.c +++ b/kernel/drivers/gpio/gpio-bcm-kona.c @@ -122,6 +122,16 @@ static void bcm_kona_gpio_unlock_gpio(struct bcm_kona_gpio *kona_gpio, spin_unlock_irqrestore(&kona_gpio->lock, flags); } +static int bcm_kona_gpio_get_dir(struct gpio_chip *chip, unsigned gpio) +{ + struct bcm_kona_gpio *kona_gpio = to_kona_gpio(chip); + void __iomem *reg_base = kona_gpio->reg_base; + u32 val; + + val = readl(reg_base + GPIO_CONTROL(gpio)) & GPIO_GPCTR0_IOTR_MASK; + return val ? GPIOF_DIR_IN : GPIOF_DIR_OUT; +} + static void bcm_kona_gpio_set(struct gpio_chip *chip, unsigned gpio, int value) { struct bcm_kona_gpio *kona_gpio; @@ -135,12 +145,8 @@ static void bcm_kona_gpio_set(struct gpio_chip *chip, unsigned gpio, int value) reg_base = kona_gpio->reg_base; spin_lock_irqsave(&kona_gpio->lock, flags); - /* determine the GPIO pin direction */ - val = readl(reg_base + GPIO_CONTROL(gpio)); - val &= GPIO_GPCTR0_IOTR_MASK; - /* this function only applies to output pin */ - if (GPIO_GPCTR0_IOTR_CMD_INPUT == val) + if (bcm_kona_gpio_get_dir(chip, gpio) == GPIOF_DIR_IN) goto out; reg_offset = value ? GPIO_OUT_SET(bank_id) : GPIO_OUT_CLEAR(bank_id); @@ -166,13 +172,12 @@ static int bcm_kona_gpio_get(struct gpio_chip *chip, unsigned gpio) reg_base = kona_gpio->reg_base; spin_lock_irqsave(&kona_gpio->lock, flags); - /* determine the GPIO pin direction */ - val = readl(reg_base + GPIO_CONTROL(gpio)); - val &= GPIO_GPCTR0_IOTR_MASK; + if (bcm_kona_gpio_get_dir(chip, gpio) == GPIOF_DIR_IN) + reg_offset = GPIO_IN_STATUS(bank_id); + else + reg_offset = GPIO_OUT_STATUS(bank_id); /* read the GPIO bank status */ - reg_offset = (GPIO_GPCTR0_IOTR_CMD_INPUT == val) ? - GPIO_IN_STATUS(bank_id) : GPIO_OUT_STATUS(bank_id); val = readl(reg_base + reg_offset); spin_unlock_irqrestore(&kona_gpio->lock, flags); @@ -310,6 +315,7 @@ static struct gpio_chip template_chip = { .owner = THIS_MODULE, .request = bcm_kona_gpio_request, .free = bcm_kona_gpio_free, + .get_direction = bcm_kona_gpio_get_dir, .direction_input = bcm_kona_gpio_direction_input, .get = bcm_kona_gpio_get, .direction_output = bcm_kona_gpio_direction_output, @@ -427,12 +433,12 @@ static int bcm_kona_gpio_irq_set_type(struct irq_data *d, unsigned int type) return 0; } -static void bcm_kona_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) +static void bcm_kona_gpio_irq_handler(struct irq_desc *desc) { void __iomem *reg_base; int bit, bank_id; unsigned long sta; - struct bcm_kona_gpio_bank *bank = irq_get_handler_data(irq); + struct bcm_kona_gpio_bank *bank = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); chained_irq_enter(chip, desc); @@ -519,11 +525,7 @@ static int bcm_kona_gpio_irq_map(struct irq_domain *d, unsigned int irq, return ret; irq_set_lockdep_class(irq, &gpio_lock_class); irq_set_chip_and_handler(irq, &bcm_gpio_irq_chip, handle_simple_irq); -#ifdef CONFIG_ARM - set_irq_flags(irq, IRQF_VALID); -#else irq_set_noprobe(irq); -#endif return 0; } @@ -534,7 +536,7 @@ static void bcm_kona_gpio_irq_unmap(struct irq_domain *d, unsigned int irq) irq_set_chip_data(irq, NULL); } -static struct irq_domain_ops bcm_kona_irq_ops = { +static const struct irq_domain_ops bcm_kona_irq_ops = { .map = bcm_kona_gpio_irq_map, .unmap = bcm_kona_gpio_irq_unmap, .xlate = irq_domain_xlate_twocell, @@ -638,21 +640,11 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev) dev_err(dev, "Couldn't add GPIO chip -- %d\n", ret); goto err_irq_domain; } - for (i = 0; i < chip->ngpio; i++) { - int irq = bcm_kona_gpio_to_irq(chip, i); - irq_set_lockdep_class(irq, &gpio_lock_class); - irq_set_chip_and_handler(irq, &bcm_gpio_irq_chip, - handle_simple_irq); -#ifdef CONFIG_ARM - set_irq_flags(irq, IRQF_VALID); -#else - irq_set_noprobe(irq); -#endif - } for (i = 0; i < kona_gpio->num_bank; i++) { bank = &kona_gpio->banks[i]; - irq_set_chained_handler(bank->irq, bcm_kona_gpio_irq_handler); - irq_set_handler_data(bank->irq, bank); + irq_set_chained_handler_and_data(bank->irq, + bcm_kona_gpio_irq_handler, + bank); } spin_lock_init(&kona_gpio->lock); -- cgit 1.2.3-korg