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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/input/misc/pcap_keys.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/input/misc/pcap_keys.c')
-rw-r--r-- | kernel/drivers/input/misc/pcap_keys.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/kernel/drivers/input/misc/pcap_keys.c b/kernel/drivers/input/misc/pcap_keys.c new file mode 100644 index 000000000..3b81daf67 --- /dev/null +++ b/kernel/drivers/input/misc/pcap_keys.c @@ -0,0 +1,131 @@ +/* + * Input driver for PCAP events: + * * Power key + * * Headphone button + * + * Copyright (c) 2008,2009 Ilya Petrov <ilya.muromec@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/mfd/ezx-pcap.h> +#include <linux/slab.h> + +struct pcap_keys { + struct pcap_chip *pcap; + struct input_dev *input; +}; + +/* PCAP2 interrupts us on keypress */ +static irqreturn_t pcap_keys_handler(int irq, void *_pcap_keys) +{ + struct pcap_keys *pcap_keys = _pcap_keys; + int pirq = irq_to_pcap(pcap_keys->pcap, irq); + u32 pstat; + + ezx_pcap_read(pcap_keys->pcap, PCAP_REG_PSTAT, &pstat); + pstat &= 1 << pirq; + + switch (pirq) { + case PCAP_IRQ_ONOFF: + input_report_key(pcap_keys->input, KEY_POWER, !pstat); + break; + case PCAP_IRQ_MIC: + input_report_key(pcap_keys->input, KEY_HP, !pstat); + break; + } + + input_sync(pcap_keys->input); + + return IRQ_HANDLED; +} + +static int pcap_keys_probe(struct platform_device *pdev) +{ + int err = -ENOMEM; + struct pcap_keys *pcap_keys; + struct input_dev *input_dev; + + pcap_keys = kmalloc(sizeof(struct pcap_keys), GFP_KERNEL); + if (!pcap_keys) + return err; + + pcap_keys->pcap = dev_get_drvdata(pdev->dev.parent); + + input_dev = input_allocate_device(); + if (!input_dev) + goto fail; + + pcap_keys->input = input_dev; + + platform_set_drvdata(pdev, pcap_keys); + input_dev->name = pdev->name; + input_dev->phys = "pcap-keys/input0"; + input_dev->id.bustype = BUS_HOST; + input_dev->dev.parent = &pdev->dev; + + __set_bit(EV_KEY, input_dev->evbit); + __set_bit(KEY_POWER, input_dev->keybit); + __set_bit(KEY_HP, input_dev->keybit); + + err = input_register_device(input_dev); + if (err) + goto fail_allocate; + + err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), + pcap_keys_handler, 0, "Power key", pcap_keys); + if (err) + goto fail_register; + + err = request_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC), + pcap_keys_handler, 0, "Headphone button", pcap_keys); + if (err) + goto fail_pwrkey; + + return 0; + +fail_pwrkey: + free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys); +fail_register: + input_unregister_device(input_dev); + goto fail; +fail_allocate: + input_free_device(input_dev); +fail: + kfree(pcap_keys); + return err; +} + +static int pcap_keys_remove(struct platform_device *pdev) +{ + struct pcap_keys *pcap_keys = platform_get_drvdata(pdev); + + free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_ONOFF), pcap_keys); + free_irq(pcap_to_irq(pcap_keys->pcap, PCAP_IRQ_MIC), pcap_keys); + + input_unregister_device(pcap_keys->input); + kfree(pcap_keys); + + return 0; +} + +static struct platform_driver pcap_keys_device_driver = { + .probe = pcap_keys_probe, + .remove = pcap_keys_remove, + .driver = { + .name = "pcap-keys", + } +}; +module_platform_driver(pcap_keys_device_driver); + +MODULE_DESCRIPTION("Motorola PCAP2 input events driver"); +MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcap_keys"); |