diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/100-bcma-gpio-add-own-IRQ-domain.patch | 222 | ||||
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/101-bcma-gpio-fix-irq-handling.patch | 20 |
2 files changed, 0 insertions, 242 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/100-bcma-gpio-add-own-IRQ-domain.patch b/target/linux/brcm47xx/patches-3.10/100-bcma-gpio-add-own-IRQ-domain.patch deleted file mode 100644 index b6b370dcad..0000000000 --- a/target/linux/brcm47xx/patches-3.10/100-bcma-gpio-add-own-IRQ-domain.patch +++ /dev/null @@ -1,222 +0,0 @@ -From 37dc57c2400b2998868a5c103756f36b8dc53a17 Mon Sep 17 00:00:00 2001 -From: Rafa? Mi?ecki <zajec5@gmail.com> -Date: Thu, 12 Dec 2013 13:46:03 +0100 -Subject: [PATCH 088/110] bcma: gpio: add own IRQ domain - -Input GPIO changes can generate interrupts, but we need kind of ACK for -them by changing IRQ polarity. This is required to stop hardware from -keep generating interrupts and generate another one on the next GPIO -state change. -This code allows using GPIOs with standard interrupts and add for -example GPIO buttons support. - -Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com> -Acked-by: Hauke Mehrtens <hauke@hauke-m.de> -Acked-by: John Crispin <blogic@openwrt.org> -Patchwork: http://patchwork.linux-mips.org/patch/6216/ ---- - drivers/bcma/Kconfig | 1 + - drivers/bcma/driver_gpio.c | 135 ++++++++++++++++++++++++++- - include/linux/bcma/bcma_driver_chipcommon.h | 1 + - 3 files changed, 134 insertions(+), 3 deletions(-) - ---- a/drivers/bcma/Kconfig -+++ b/drivers/bcma/Kconfig -@@ -76,6 +76,7 @@ config BCMA_DRIVER_GMAC_CMN - config BCMA_DRIVER_GPIO - bool "BCMA GPIO driver" - depends on BCMA && GPIOLIB -+ select IRQ_DOMAIN if BCMA_HOST_SOC - help - Driver to provide access to the GPIO pins of the bcma bus. - ---- a/drivers/bcma/driver_gpio.c -+++ b/drivers/bcma/driver_gpio.c -@@ -9,6 +9,9 @@ - */ - - #include <linux/gpio.h> -+#include <linux/irq.h> -+#include <linux/interrupt.h> -+#include <linux/irqdomain.h> - #include <linux/export.h> - #include <linux/bcma/bcma.h> - -@@ -73,19 +76,133 @@ static void bcma_gpio_free(struct gpio_c - bcma_chipco_gpio_pullup(cc, 1 << gpio, 0); - } - -+#if IS_BUILTIN(CONFIG_BCMA_HOST_SOC) - static int bcma_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) - { - struct bcma_drv_cc *cc = bcma_gpio_get_cc(chip); - - if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC) -- return bcma_core_irq(cc->core); -+ return irq_find_mapping(cc->irq_domain, gpio); - else - return -EINVAL; - } - -+static void bcma_gpio_irq_unmask(struct irq_data *d) -+{ -+ struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d); -+ int gpio = irqd_to_hwirq(d); -+ -+ bcma_chipco_gpio_intmask(cc, BIT(gpio), BIT(gpio)); -+} -+ -+static void bcma_gpio_irq_mask(struct irq_data *d) -+{ -+ struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d); -+ int gpio = irqd_to_hwirq(d); -+ -+ bcma_chipco_gpio_intmask(cc, BIT(gpio), 0); -+} -+ -+static struct irq_chip bcma_gpio_irq_chip = { -+ .name = "BCMA-GPIO", -+ .irq_mask = bcma_gpio_irq_mask, -+ .irq_unmask = bcma_gpio_irq_unmask, -+}; -+ -+static irqreturn_t bcma_gpio_irq_handler(int irq, void *dev_id) -+{ -+ struct bcma_drv_cc *cc = dev_id; -+ u32 val = bcma_cc_read32(cc, BCMA_CC_GPIOIN); -+ u32 mask = bcma_cc_read32(cc, BCMA_CC_GPIOIRQ); -+ u32 pol = bcma_cc_read32(cc, BCMA_CC_GPIOPOL); -+ u32 irqs = (val ^ pol) & mask; -+ int gpio; -+ -+ if (!irqs) -+ return IRQ_NONE; -+ -+ for_each_set_bit(gpio, (unsigned long *)&irqs, cc->gpio.ngpio) -+ generic_handle_irq(bcma_gpio_to_irq(&cc->gpio, gpio)); -+ bcma_chipco_gpio_polarity(cc, irqs, val & irqs); -+ -+ return IRQ_HANDLED; -+} -+ -+static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc) -+{ -+ struct gpio_chip *chip = &cc->gpio; -+ int gpio, hwirq, err; -+ -+ if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC) -+ return 0; -+ -+ cc->irq_domain = irq_domain_add_linear(NULL, chip->ngpio, -+ &irq_domain_simple_ops, cc); -+ if (!cc->irq_domain) { -+ err = -ENODEV; -+ goto err_irq_domain; -+ } -+ for (gpio = 0; gpio < chip->ngpio; gpio++) { -+ int irq = irq_create_mapping(cc->irq_domain, gpio); -+ -+ irq_set_chip_data(irq, cc); -+ irq_set_chip_and_handler(irq, &bcma_gpio_irq_chip, -+ handle_simple_irq); -+ } -+ -+ hwirq = bcma_core_irq(cc->core); -+ err = request_irq(hwirq, bcma_gpio_irq_handler, IRQF_SHARED, "gpio", -+ cc); -+ if (err) -+ goto err_req_irq; -+ -+ bcma_cc_set32(cc, BCMA_CC_IRQMASK, BCMA_CC_IRQ_GPIO); -+ -+ return 0; -+ -+err_req_irq: -+ for (gpio = 0; gpio < chip->ngpio; gpio++) { -+ int irq = irq_find_mapping(cc->irq_domain, gpio); -+ -+ irq_dispose_mapping(irq); -+ } -+ irq_domain_remove(cc->irq_domain); -+err_irq_domain: -+ return err; -+} -+ -+static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc) -+{ -+ struct gpio_chip *chip = &cc->gpio; -+ int gpio; -+ -+ if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC) -+ return; -+ -+ bcma_cc_mask32(cc, BCMA_CC_IRQMASK, ~BCMA_CC_IRQ_GPIO); -+ free_irq(bcma_core_irq(cc->core), cc); -+ for (gpio = 0; gpio < chip->ngpio; gpio++) { -+ int irq = irq_find_mapping(cc->irq_domain, gpio); -+ -+ irq_dispose_mapping(irq); -+ } -+ irq_domain_remove(cc->irq_domain); -+} -+#else -+static int bcma_gpio_irq_domain_init(struct bcma_drv_cc *cc) -+{ -+ return 0; -+} -+ -+static void bcma_gpio_irq_domain_exit(struct bcma_drv_cc *cc) -+{ -+} -+#endif -+ - int bcma_gpio_init(struct bcma_drv_cc *cc) - { - struct gpio_chip *chip = &cc->gpio; -+ int err; - - chip->label = "bcma_gpio"; - chip->owner = THIS_MODULE; -@@ -95,7 +212,8 @@ int bcma_gpio_init(struct bcma_drv_cc *c - chip->set = bcma_gpio_set_value; - chip->direction_input = bcma_gpio_direction_input; - chip->direction_output = bcma_gpio_direction_output; -- chip->to_irq = bcma_gpio_to_irq; -+ if (IS_BUILTIN(CONFIG_BCMA_HOST_SOC)) -+ chip->to_irq = bcma_gpio_to_irq; - chip->ngpio = 16; - /* There is just one SoC in one device and its GPIO addresses should be - * deterministic to address them more easily. The other buses could get -@@ -105,10 +223,21 @@ int bcma_gpio_init(struct bcma_drv_cc *c - else - chip->base = -1; - -- return gpiochip_add(chip); -+ err = bcma_gpio_irq_domain_init(cc); -+ if (err) -+ return err; -+ -+ err = gpiochip_add(chip); -+ if (err) { -+ bcma_gpio_irq_domain_exit(cc); -+ return err; -+ } -+ -+ return 0; - } - - int bcma_gpio_unregister(struct bcma_drv_cc *cc) - { -+ bcma_gpio_irq_domain_exit(cc); - return gpiochip_remove(&cc->gpio); - } ---- a/include/linux/bcma/bcma_driver_chipcommon.h -+++ b/include/linux/bcma/bcma_driver_chipcommon.h -@@ -640,6 +640,7 @@ struct bcma_drv_cc { - spinlock_t gpio_lock; - #ifdef CONFIG_BCMA_DRIVER_GPIO - struct gpio_chip gpio; -+ struct irq_domain *irq_domain; - #endif - }; - diff --git a/target/linux/brcm47xx/patches-3.10/101-bcma-gpio-fix-irq-handling.patch b/target/linux/brcm47xx/patches-3.10/101-bcma-gpio-fix-irq-handling.patch deleted file mode 100644 index 388eefa1f8..0000000000 --- a/target/linux/brcm47xx/patches-3.10/101-bcma-gpio-fix-irq-handling.patch +++ /dev/null @@ -1,20 +0,0 @@ ---- a/drivers/bcma/driver_gpio.c -+++ b/drivers/bcma/driver_gpio.c -@@ -91,7 +91,9 @@ static void bcma_gpio_irq_unmask(struct - { - struct bcma_drv_cc *cc = irq_data_get_irq_chip_data(d); - int gpio = irqd_to_hwirq(d); -+ u32 val = bcma_chipco_gpio_in(cc, BIT(gpio)); - -+ bcma_chipco_gpio_polarity(cc, BIT(gpio), val); - bcma_chipco_gpio_intmask(cc, BIT(gpio), BIT(gpio)); - } - -@@ -156,6 +158,7 @@ static int bcma_gpio_irq_domain_init(str - if (err) - goto err_req_irq; - -+ bcma_chipco_gpio_intmask(cc, ~0, 0); - bcma_cc_set32(cc, BCMA_CC_IRQMASK, BCMA_CC_IRQ_GPIO); - - return 0; |