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-rw-r--r--Documentation/blackfin/gptimers-example.c83
1 files changed, 0 insertions, 83 deletions
diff --git a/Documentation/blackfin/gptimers-example.c b/Documentation/blackfin/gptimers-example.c
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--- a/Documentation/blackfin/gptimers-example.c
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-/*
- * Simple gptimers example
- * http://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:drivers:gptimers
- *
- * Copyright 2007-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-
-#include <asm/gptimers.h>
-#include <asm/portmux.h>
-
-/* ... random driver includes ... */
-
-#define DRIVER_NAME "gptimer_example"
-
-struct gptimer_data {
- uint32_t period, width;
-};
-static struct gptimer_data data;
-
-/* ... random driver state ... */
-
-static irqreturn_t gptimer_example_irq(int irq, void *dev_id)
-{
- struct gptimer_data *data = dev_id;
-
- /* make sure it was our timer which caused the interrupt */
- if (!get_gptimer_intr(TIMER5_id))
- return IRQ_NONE;
-
- /* read the width/period values that were captured for the waveform */
- data->width = get_gptimer_pwidth(TIMER5_id);
- data->period = get_gptimer_period(TIMER5_id);
-
- /* acknowledge the interrupt */
- clear_gptimer_intr(TIMER5_id);
-
- /* tell the upper layers we took care of things */
- return IRQ_HANDLED;
-}
-
-/* ... random driver code ... */
-
-static int __init gptimer_example_init(void)
-{
- int ret;
-
- /* grab the peripheral pins */
- ret = peripheral_request(P_TMR5, DRIVER_NAME);
- if (ret) {
- printk(KERN_NOTICE DRIVER_NAME ": peripheral request failed\n");
- return ret;
- }
-
- /* grab the IRQ for the timer */
- ret = request_irq(IRQ_TIMER5, gptimer_example_irq, IRQF_SHARED, DRIVER_NAME, &data);
- if (ret) {
- printk(KERN_NOTICE DRIVER_NAME ": IRQ request failed\n");
- peripheral_free(P_TMR5);
- return ret;
- }
-
- /* setup the timer and enable it */
- set_gptimer_config(TIMER5_id, WDTH_CAP | PULSE_HI | PERIOD_CNT | IRQ_ENA);
- enable_gptimers(TIMER5bit);
-
- return 0;
-}
-module_init(gptimer_example_init);
-
-static void __exit gptimer_example_exit(void)
-{
- disable_gptimers(TIMER5bit);
- free_irq(IRQ_TIMER5, &data);
- peripheral_free(P_TMR5);
-}
-module_exit(gptimer_example_exit);
-
-MODULE_LICENSE("BSD");