diff options
Diffstat (limited to 'drivers/input/misc/sirfsoc-onkey.c')
| -rw-r--r-- | drivers/input/misc/sirfsoc-onkey.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/drivers/input/misc/sirfsoc-onkey.c b/drivers/input/misc/sirfsoc-onkey.c deleted file mode 100644 index 0621c367049a..000000000000 --- a/drivers/input/misc/sirfsoc-onkey.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Power key driver for SiRF PrimaII - * - * Copyright (c) 2013 Cambridge Silicon Radio Limited, a CSR plc group company. - * - * Licensed under GPLv2 or later. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/input.h> -#include <linux/rtc/sirfsoc_rtciobrg.h> -#include <linux/of.h> - -struct sirfsoc_pwrc_drvdata { - u32 pwrc_base; - struct input_dev *input; -}; - -#define PWRC_ON_KEY_BIT (1 << 0) - -#define PWRC_INT_STATUS 0xc -#define PWRC_INT_MASK 0x10 - -static irqreturn_t sirfsoc_pwrc_isr(int irq, void *dev_id) -{ - struct sirfsoc_pwrc_drvdata *pwrcdrv = dev_id; - u32 int_status; - - int_status = sirfsoc_rtc_iobrg_readl(pwrcdrv->pwrc_base + - PWRC_INT_STATUS); - sirfsoc_rtc_iobrg_writel(int_status & ~PWRC_ON_KEY_BIT, - pwrcdrv->pwrc_base + PWRC_INT_STATUS); - - /* - * For a typical Linux system, we report KEY_SUSPEND to trigger apm-power.c - * to queue a SUSPEND APM event - */ - input_event(pwrcdrv->input, EV_PWR, KEY_SUSPEND, 1); - input_sync(pwrcdrv->input); - - /* - * Todo: report KEY_POWER event for Android platforms, Android PowerManager - * will handle the suspend and powerdown/hibernation - */ - - return IRQ_HANDLED; -} - -static const struct of_device_id sirfsoc_pwrc_of_match[] = { - { .compatible = "sirf,prima2-pwrc" }, - {}, -} -MODULE_DEVICE_TABLE(of, sirfsoc_pwrc_of_match); - -static int sirfsoc_pwrc_probe(struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - struct sirfsoc_pwrc_drvdata *pwrcdrv; - int irq; - int error; - - pwrcdrv = devm_kzalloc(&pdev->dev, sizeof(struct sirfsoc_pwrc_drvdata), - GFP_KERNEL); - if (!pwrcdrv) { - dev_info(&pdev->dev, "Not enough memory for the device data\n"); - return -ENOMEM; - } - - /* - * we can't use of_iomap because pwrc is not mapped in memory, - * the so-called base address is only offset in rtciobrg - */ - error = of_property_read_u32(np, "reg", &pwrcdrv->pwrc_base); - if (error) { - dev_err(&pdev->dev, - "unable to find base address of pwrc node in dtb\n"); - return error; - } - - pwrcdrv->input = devm_input_allocate_device(&pdev->dev); - if (!pwrcdrv->input) - return -ENOMEM; - - pwrcdrv->input->name = "sirfsoc pwrckey"; - pwrcdrv->input->phys = "pwrc/input0"; - pwrcdrv->input->evbit[0] = BIT_MASK(EV_PWR); - - irq = platform_get_irq(pdev, 0); - error = devm_request_irq(&pdev->dev, irq, - sirfsoc_pwrc_isr, IRQF_SHARED, - "sirfsoc_pwrc_int", pwrcdrv); - if (error) { - dev_err(&pdev->dev, "unable to claim irq %d, error: %d\n", - irq, error); - return error; - } - - sirfsoc_rtc_iobrg_writel( - sirfsoc_rtc_iobrg_readl(pwrcdrv->pwrc_base + PWRC_INT_MASK) | - PWRC_ON_KEY_BIT, - pwrcdrv->pwrc_base + PWRC_INT_MASK); - - error = input_register_device(pwrcdrv->input); - if (error) { - dev_err(&pdev->dev, - "unable to register input device, error: %d\n", - error); - return error; - } - - platform_set_drvdata(pdev, pwrcdrv); - device_init_wakeup(&pdev->dev, 1); - - return 0; -} - -static int sirfsoc_pwrc_remove(struct platform_device *pdev) -{ - device_init_wakeup(&pdev->dev, 0); - - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int pwrc_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct sirfsoc_pwrc_drvdata *pwrcdrv = platform_get_drvdata(pdev); - - /* - * Do not mask pwrc interrupt as we want pwrc work as a wakeup source - * if users touch X_ONKEY_B, see arch/arm/mach-prima2/pm.c - */ - sirfsoc_rtc_iobrg_writel( - sirfsoc_rtc_iobrg_readl( - pwrcdrv->pwrc_base + PWRC_INT_MASK) | PWRC_ON_KEY_BIT, - pwrcdrv->pwrc_base + PWRC_INT_MASK); - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(sirfsoc_pwrc_pm_ops, NULL, pwrc_resume); - -static struct platform_driver sirfsoc_pwrc_driver = { - .probe = sirfsoc_pwrc_probe, - .remove = sirfsoc_pwrc_remove, - .driver = { - .name = "sirfsoc-pwrc", - .owner = THIS_MODULE, - .pm = &sirfsoc_pwrc_pm_ops, - .of_match_table = of_match_ptr(sirfsoc_pwrc_of_match), - } -}; - -module_platform_driver(sirfsoc_pwrc_driver); - -MODULE_LICENSE("GPLv2"); -MODULE_AUTHOR("Binghua Duan <Binghua.Duan@csr.com>, Xianglong Du <Xianglong.Du@csr.com>"); -MODULE_DESCRIPTION("CSR Prima2 PWRC Driver"); -MODULE_ALIAS("platform:sirfsoc-pwrc"); |