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Release 4.11 drivers/input/misc/ixp4xx-beeper.c

/*
 * Generic IXP4xx beeper driver
 *
 * Copyright (C) 2005 Tower Technologies
 *
 * based on nslu2-io.c
 *  Copyright (C) 2004 Karen Spearel
 *
 * Author: Alessandro Zummo <a.zummo@towertech.it>
 * Maintainers: http://www.nslu2-linux.org/
 *
 * 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/input.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <mach/hardware.h>

MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
MODULE_DESCRIPTION("ixp4xx beeper driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:ixp4xx-beeper");

static DEFINE_SPINLOCK(beep_lock);


static void ixp4xx_spkr_control(unsigned int pin, unsigned int count) { unsigned long flags; spin_lock_irqsave(&beep_lock, flags); if (count) { gpio_direction_output(pin, 0); *IXP4XX_OSRT2 = (count & ~IXP4XX_OST_RELOAD_MASK) | IXP4XX_OST_ENABLE; } else { gpio_direction_output(pin, 1); gpio_direction_input(pin); *IXP4XX_OSRT2 = 0; } spin_unlock_irqrestore(&beep_lock, flags); }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo7493.67%150.00%
Linus Walleij56.33%150.00%
Total79100.00%2100.00%


static int ixp4xx_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) { unsigned int pin = (unsigned int) input_get_drvdata(dev); unsigned int count = 0; if (type != EV_SND) return -1; switch (code) { case SND_BELL: if (value) value = 1000; case SND_TONE: break; default: return -1; } if (value > 20 && value < 32767) count = (ixp4xx_timer_freq / (value * 4)) - 1; ixp4xx_spkr_control(pin, count); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo10695.50%125.00%
Dmitry Torokhov32.70%125.00%
Uwe Kleine-König10.90%125.00%
Frederik Deweerdt10.90%125.00%
Total111100.00%4100.00%


static irqreturn_t ixp4xx_spkr_interrupt(int irq, void *dev_id) { unsigned int pin = (unsigned int) dev_id; /* clear interrupt */ *IXP4XX_OSST = IXP4XX_OSST_TIMER_2_PEND; /* flip the beeper output */ gpio_set_value(pin, !gpio_get_value(pin)); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo2454.55%150.00%
Linus Walleij2045.45%150.00%
Total44100.00%2100.00%


static int ixp4xx_spkr_probe(struct platform_device *dev) { struct input_dev *input_dev; int err; input_dev = input_allocate_device(); if (!input_dev) return -ENOMEM; input_set_drvdata(input_dev, (void *) dev->id); input_dev->name = "ixp4xx beeper", input_dev->phys = "ixp4xx/gpio"; input_dev->id.bustype = BUS_HOST; input_dev->id.vendor = 0x001f; input_dev->id.product = 0x0001; input_dev->id.version = 0x0100; input_dev->dev.parent = &dev->dev; input_dev->evbit[0] = BIT_MASK(EV_SND); input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); input_dev->event = ixp4xx_spkr_event; err = gpio_request(dev->id, "ixp4-beeper"); if (err) goto err_free_device; err = request_irq(IRQ_IXP4XX_TIMER2, &ixp4xx_spkr_interrupt, IRQF_NO_SUSPEND, "ixp4xx-beeper", (void *) dev->id); if (err) goto err_free_gpio; err = input_register_device(input_dev); if (err) goto err_free_irq; platform_set_drvdata(dev, input_dev); return 0; err_free_irq: free_irq(IRQ_IXP4XX_TIMER2, (void *)dev->id); err_free_gpio: gpio_free(dev->id); err_free_device: input_free_device(input_dev); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo19781.74%114.29%
Linus Walleij2811.62%114.29%
Dmitry Torokhov62.49%228.57%
Lars-Peter Clausen62.49%114.29%
Jiri Slaby31.24%114.29%
Ian Campbell10.41%114.29%
Total241100.00%7100.00%


static int ixp4xx_spkr_remove(struct platform_device *dev) { struct input_dev *input_dev = platform_get_drvdata(dev); unsigned int pin = (unsigned int) input_get_drvdata(input_dev); input_unregister_device(input_dev); /* turn the speaker off */ disable_irq(IRQ_IXP4XX_TIMER2); ixp4xx_spkr_control(pin, 0); free_irq(IRQ_IXP4XX_TIMER2, (void *)dev->id); gpio_free(dev->id); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo5978.67%125.00%
Linus Walleij79.33%125.00%
Lars-Peter Clausen68.00%125.00%
Dmitry Torokhov34.00%125.00%
Total75100.00%4100.00%


static void ixp4xx_spkr_shutdown(struct platform_device *dev) { struct input_dev *input_dev = platform_get_drvdata(dev); unsigned int pin = (unsigned int) input_get_drvdata(input_dev); /* turn off the speaker */ disable_irq(IRQ_IXP4XX_TIMER2); ixp4xx_spkr_control(pin, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo4493.62%150.00%
Dmitry Torokhov36.38%150.00%
Total47100.00%2100.00%

static struct platform_driver ixp4xx_spkr_platform_driver = { .driver = { .name = "ixp4xx-beeper", }, .probe = ixp4xx_spkr_probe, .remove = ixp4xx_spkr_remove, .shutdown = ixp4xx_spkr_shutdown, }; module_platform_driver(ixp4xx_spkr_platform_driver);

Overall Contributors

PersonTokensPropCommitsCommitProp
Alessandro Zummo58385.48%321.43%
Linus Walleij639.24%214.29%
Dmitry Torokhov152.20%214.29%
Lars-Peter Clausen121.76%17.14%
Jiri Slaby30.44%17.14%
JJ Ding20.29%17.14%
Frederik Deweerdt10.15%17.14%
Ian Campbell10.15%17.14%
Uwe Kleine-König10.15%17.14%
Russell King10.15%17.14%
Total682100.00%14100.00%
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