static irqreturn_t adp5588_irq_handler(int irq, void *devid) { struct adp5588_gpio *dev = devid; unsigned status, bank, bit, pending; int ret; status = adp5588_gpio_read(dev->client, INT_STAT); if (status & ADP5588_GPI_INT) { ret = adp5588_gpio_read_intstat(dev->client, dev->irq_stat); if (ret < 0) memset(dev->irq_stat, 0, ARRAY_SIZE(dev->irq_stat)); for (bank = 0, bit = 0; bank <= ADP5588_BANK(ADP5588_MAXGPIO); bank++, bit = 0) { pending = dev->irq_stat[bank] & dev->irq_mask[bank]; while (pending) { if (pending & (1 << bit)) { handle_nested_irq(dev->irq_base + (bank << 3) + bit); pending &= ~(1 << bit); } bit++; } } } adp5588_gpio_write(dev->client, INT_STAT, status); /* Status is W1C */ return IRQ_HANDLED; }
static int adp5588_irq_setup(struct adp5588_gpio *dev) { struct i2c_client *client = dev->client; struct adp5588_gpio_platform_data *pdata = dev_get_platdata(&client->dev); unsigned gpio; int ret; adp5588_gpio_write(client, CFG, ADP5588_AUTO_INC); adp5588_gpio_write(client, INT_STAT, -1); /* status is W1C */ adp5588_gpio_read_intstat(client, dev->irq_stat); /* read to clear */ dev->irq_base = pdata->irq_base; mutex_init(&dev->irq_lock); for (gpio = 0; gpio < dev->gpio_chip.ngpio; gpio++) { int irq = gpio + dev->irq_base; irq_set_chip_data(irq, dev); irq_set_chip_and_handler(irq, &adp5588_irq_chip, handle_level_irq); irq_set_nested_thread(irq, 1); #ifdef CONFIG_ARM /* * ARM needs us to explicitly flag the IRQ as VALID, * once we do so, it will also set the noprobe. */ set_irq_flags(irq, IRQF_VALID); #else irq_set_noprobe(irq); #endif } ret = request_threaded_irq(client->irq, NULL, adp5588_irq_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, dev_name(&client->dev), dev); if (ret) { dev_err(&client->dev, "failed to request irq %d\n", client->irq); goto out; } dev->gpio_chip.to_irq = adp5588_gpio_to_irq; adp5588_gpio_write(client, CFG, ADP5588_AUTO_INC | ADP5588_INT_CFG | ADP5588_GPI_INT); return 0; out: dev->irq_base = 0; return ret; }
static int adp5588_irq_setup(struct adp5588_gpio *dev) { struct i2c_client *client = dev->client; struct adp5588_gpio_platform_data *pdata = dev_get_platdata(&client->dev); unsigned gpio; int ret; adp5588_gpio_write(client, CFG, ADP5588_AUTO_INC); adp5588_gpio_write(client, INT_STAT, -1); /* status is W1C */ adp5588_gpio_read_intstat(client, dev->irq_stat); /* read to clear */ dev->irq_base = pdata->irq_base; mutex_init(&dev->irq_lock); for (gpio = 0; gpio < dev->gpio_chip.ngpio; gpio++) { int irq = gpio + dev->irq_base; irq_set_chip_data(irq, dev); irq_set_chip_and_handler(irq, &adp5588_irq_chip, handle_level_irq); irq_set_nested_thread(irq, 1); irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE); } ret = request_threaded_irq(client->irq, NULL, adp5588_irq_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, dev_name(&client->dev), dev); if (ret) { dev_err(&client->dev, "failed to request irq %d\n", client->irq); goto out; } dev->gpio_chip.to_irq = adp5588_gpio_to_irq; adp5588_gpio_write(client, CFG, ADP5588_AUTO_INC | ADP5588_INT_CFG | ADP5588_GPI_INT); return 0; out: dev->irq_base = 0; return ret; }