diff options
| -rw-r--r-- | drivers/mfd/stmpe.c | 36 | ||||
| -rw-r--r-- | include/linux/mfd/stmpe.h | 7 |
2 files changed, 36 insertions, 7 deletions
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 2963689cf45..39efa629a19 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -5,6 +5,7 @@ * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson */ +#include <linux/gpio.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/interrupt.h> @@ -877,9 +878,10 @@ static int __devinit stmpe_devices_init(struct stmpe *stmpe) static int stmpe_suspend(struct device *dev) { struct i2c_client *i2c = to_i2c_client(dev); + struct stmpe *stmpe = i2c_get_clientdata(i2c); if (device_may_wakeup(&i2c->dev)) - enable_irq_wake(i2c->irq); + enable_irq_wake(stmpe->irq); return 0; } @@ -887,9 +889,10 @@ static int stmpe_suspend(struct device *dev) static int stmpe_resume(struct device *dev) { struct i2c_client *i2c = to_i2c_client(dev); + struct stmpe *stmpe = i2c_get_clientdata(i2c); if (device_may_wakeup(&i2c->dev)) - disable_irq_wake(i2c->irq); + disable_irq_wake(stmpe->irq); return 0; } @@ -925,15 +928,28 @@ static int __devinit stmpe_probe(struct i2c_client *i2c, i2c_set_clientdata(i2c, stmpe); + if (pdata->irq_over_gpio) { + ret = gpio_request_one(pdata->irq_gpio, GPIOF_DIR_IN, "stmpe"); + if (ret) { + dev_err(stmpe->dev, "failed to request IRQ GPIO: %d\n", + ret); + goto out_free; + } + + stmpe->irq = gpio_to_irq(pdata->irq_gpio); + } else { + stmpe->irq = i2c->irq; + } + ret = stmpe_chip_init(stmpe); if (ret) - goto out_free; + goto free_gpio; ret = stmpe_irq_init(stmpe); if (ret) - goto out_free; + goto free_gpio; - ret = request_threaded_irq(stmpe->i2c->irq, NULL, stmpe_irq, + ret = request_threaded_irq(stmpe->irq, NULL, stmpe_irq, pdata->irq_trigger | IRQF_ONESHOT, "stmpe", stmpe); if (ret) { @@ -951,9 +967,12 @@ static int __devinit stmpe_probe(struct i2c_client *i2c, out_removedevs: mfd_remove_devices(stmpe->dev); - free_irq(stmpe->i2c->irq, stmpe); + free_irq(stmpe->irq, stmpe); out_removeirq: stmpe_irq_remove(stmpe); +free_gpio: + if (pdata->irq_over_gpio) + gpio_free(pdata->irq_gpio); out_free: kfree(stmpe); return ret; @@ -965,9 +984,12 @@ static int __devexit stmpe_remove(struct i2c_client *client) mfd_remove_devices(stmpe->dev); - free_irq(stmpe->i2c->irq, stmpe); + free_irq(stmpe->irq, stmpe); stmpe_irq_remove(stmpe); + if (stmpe->pdata->irq_over_gpio) + gpio_free(stmpe->pdata->irq_gpio); + kfree(stmpe); return 0; diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h index be1af7c42e5..270d6613aad 100644 --- a/include/linux/mfd/stmpe.h +++ b/include/linux/mfd/stmpe.h @@ -61,6 +61,7 @@ struct stmpe_variant_info; * @variant: the detected STMPE model number * @regs: list of addresses of registers which are at different addresses on * different variants. Indexed by one of STMPE_IDX_*. + * @irq: irq number for stmpe * @irq_base: starting IRQ number for internal IRQs * @num_gpios: number of gpios, differs for variants * @ier: cache of IER registers for bus_lock @@ -76,6 +77,7 @@ struct stmpe { struct stmpe_variant_info *variant; const u8 *regs; + int irq; int irq_base; int num_gpios; u8 ier[2]; @@ -183,6 +185,9 @@ struct stmpe_ts_platform_data { * @autosleep_timeout: inactivity timeout in milliseconds for autosleep * @irq_base: base IRQ number. %STMPE_NR_IRQS irqs will be used, or * %STMPE_NR_INTERNAL_IRQS if the GPIO driver is not used. + * @irq_over_gpio: true if gpio is used to get irq + * @irq_gpio: gpio number over which irq will be requested (significant only if + * irq_over_gpio is true) * @gpio: GPIO-specific platform data * @keypad: keypad-specific platform data * @ts: touchscreen-specific platform data @@ -194,6 +199,8 @@ struct stmpe_platform_data { unsigned int irq_trigger; bool irq_invert_polarity; bool autosleep; + bool irq_over_gpio; + int irq_gpio; int autosleep_timeout; struct stmpe_gpio_platform_data *gpio; |