diff options
author | 2020-05-30 09:40:12 +0200 | |
---|---|---|
committer | 2020-05-30 09:40:12 +0200 | |
commit | 76fe06c1e68b8f8dfb63d5b268623830dcb16ed0 (patch) | |
tree | 89b6e3df7c2ebdc996800429b3d30b7497f7ab7a /drivers/gpio | |
parent | genirq: Check irq_data_get_irq_chip() return value before use (diff) | |
parent | dt-bindings: interrupt-controller: Add Loongson PCH MSI (diff) | |
download | linux-76fe06c1e68b8f8dfb63d5b268623830dcb16ed0.tar.gz linux-76fe06c1e68b8f8dfb63d5b268623830dcb16ed0.tar.bz2 linux-76fe06c1e68b8f8dfb63d5b268623830dcb16ed0.zip |
Merge tag 'irqchip-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier:
- A few new drivers for the Loongson MIPS platform (HTVEC, PIC, MSI)
- A cleanup of the __irq_domain_add() API
- A cleanup of the IRQ simulator to actually use some of
the irq infrastructure
- Some fixes for the Sifive PLIC when used in a multi-controller
context
- Fixes for the GICv3 ITS to spread interrupts according to the
load of each CPU, and to honor managed interrupts
- Numerous cleanups and documentation fixes
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/gpio-mockup.c | 53 |
1 files changed, 42 insertions, 11 deletions
diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c index 3eb94f3740d1..bc345185db26 100644 --- a/drivers/gpio/gpio-mockup.c +++ b/drivers/gpio/gpio-mockup.c @@ -14,6 +14,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/irq_sim.h> +#include <linux/irqdomain.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/property.h> @@ -48,7 +49,7 @@ struct gpio_mockup_line_status { struct gpio_mockup_chip { struct gpio_chip gc; struct gpio_mockup_line_status *lines; - struct irq_sim irqsim; + struct irq_domain *irq_sim_domain; struct dentry *dbg_dir; struct mutex lock; }; @@ -144,14 +145,12 @@ static void gpio_mockup_set_multiple(struct gpio_chip *gc, static int gpio_mockup_apply_pull(struct gpio_mockup_chip *chip, unsigned int offset, int value) { + int curr, irq, irq_type, ret = 0; struct gpio_desc *desc; struct gpio_chip *gc; - struct irq_sim *sim; - int curr, irq, irq_type; gc = &chip->gc; desc = &gc->gpiodev->descs[offset]; - sim = &chip->irqsim; mutex_lock(&chip->lock); @@ -161,14 +160,28 @@ static int gpio_mockup_apply_pull(struct gpio_mockup_chip *chip, if (curr == value) goto out; - irq = irq_sim_irqnum(sim, offset); + irq = irq_find_mapping(chip->irq_sim_domain, offset); + if (!irq) + /* + * This is fine - it just means, nobody is listening + * for interrupts on this line, otherwise + * irq_create_mapping() would have been called from + * the to_irq() callback. + */ + goto set_value; + irq_type = irq_get_trigger_type(irq); if ((value == 1 && (irq_type & IRQ_TYPE_EDGE_RISING)) || - (value == 0 && (irq_type & IRQ_TYPE_EDGE_FALLING))) - irq_sim_fire(sim, offset); + (value == 0 && (irq_type & IRQ_TYPE_EDGE_FALLING))) { + ret = irq_set_irqchip_state(irq, IRQCHIP_STATE_PENDING, + true); + if (ret) + goto out; + } } +set_value: /* Change the value unless we're actively driving the line. */ if (!test_bit(FLAG_REQUESTED, &desc->flags) || !test_bit(FLAG_IS_OUT, &desc->flags)) @@ -177,7 +190,7 @@ static int gpio_mockup_apply_pull(struct gpio_mockup_chip *chip, out: chip->lines[offset].pull = value; mutex_unlock(&chip->lock); - return 0; + return ret; } static int gpio_mockup_set_config(struct gpio_chip *gc, @@ -236,7 +249,7 @@ static int gpio_mockup_to_irq(struct gpio_chip *gc, unsigned int offset) { struct gpio_mockup_chip *chip = gpiochip_get_data(gc); - return irq_sim_irqnum(&chip->irqsim, offset); + return irq_create_mapping(chip->irq_sim_domain, offset); } static void gpio_mockup_free(struct gpio_chip *gc, unsigned int offset) @@ -389,6 +402,19 @@ static int gpio_mockup_name_lines(struct device *dev, return 0; } +static void gpio_mockup_dispose_mappings(void *data) +{ + struct gpio_mockup_chip *chip = data; + struct gpio_chip *gc = &chip->gc; + int i, irq; + + for (i = 0; i < gc->ngpio; i++) { + irq = irq_find_mapping(chip->irq_sim_domain, i); + if (irq) + irq_dispose_mapping(irq); + } +} + static int gpio_mockup_probe(struct platform_device *pdev) { struct gpio_mockup_chip *chip; @@ -456,8 +482,13 @@ static int gpio_mockup_probe(struct platform_device *pdev) return rv; } - rv = devm_irq_sim_init(dev, &chip->irqsim, gc->ngpio); - if (rv < 0) + chip->irq_sim_domain = devm_irq_domain_create_sim(dev, NULL, + gc->ngpio); + if (IS_ERR(chip->irq_sim_domain)) + return PTR_ERR(chip->irq_sim_domain); + + rv = devm_add_action_or_reset(dev, gpio_mockup_dispose_mappings, chip); + if (rv) return rv; rv = devm_gpiochip_add_data(dev, &chip->gc, chip); |