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path: root/drivers/input/misc/bfin_rotary.c
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Diffstat (limited to 'drivers/input/misc/bfin_rotary.c')
-rw-r--r--drivers/input/misc/bfin_rotary.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/drivers/input/misc/bfin_rotary.c b/drivers/input/misc/bfin_rotary.c
deleted file mode 100644
index 799ce3d2820e..000000000000
--- a/drivers/input/misc/bfin_rotary.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * Rotary counter driver for Analog Devices Blackfin Processors
- *
- * Copyright 2008-2009 Analog Devices Inc.
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/pm.h>
-#include <linux/platform_device.h>
-#include <linux/input.h>
-#include <linux/slab.h>
-#include <linux/platform_data/bfin_rotary.h>
-
-#include <asm/portmux.h>
-
-#define CNT_CONFIG_OFF		0	/* CNT Config Offset */
-#define CNT_IMASK_OFF		4	/* CNT Interrupt Mask Offset */
-#define CNT_STATUS_OFF		8	/* CNT Status Offset */
-#define CNT_COMMAND_OFF		12	/* CNT Command Offset */
-#define CNT_DEBOUNCE_OFF	16	/* CNT Debounce Offset */
-#define CNT_COUNTER_OFF		20	/* CNT Counter Offset */
-#define CNT_MAX_OFF		24	/* CNT Maximum Count Offset */
-#define CNT_MIN_OFF		28	/* CNT Minimum Count Offset */
-
-struct bfin_rot {
-	struct input_dev *input;
-	void __iomem *base;
-	int irq;
-	unsigned int up_key;
-	unsigned int down_key;
-	unsigned int button_key;
-	unsigned int rel_code;
-
-	unsigned short mode;
-	unsigned short debounce;
-
-	unsigned short cnt_config;
-	unsigned short cnt_imask;
-	unsigned short cnt_debounce;
-};
-
-static void report_key_event(struct input_dev *input, int keycode)
-{
-	/* simulate a press-n-release */
-	input_report_key(input, keycode, 1);
-	input_sync(input);
-	input_report_key(input, keycode, 0);
-	input_sync(input);
-}
-
-static void report_rotary_event(struct bfin_rot *rotary, int delta)
-{
-	struct input_dev *input = rotary->input;
-
-	if (rotary->up_key) {
-		report_key_event(input,
-				 delta > 0 ? rotary->up_key : rotary->down_key);
-	} else {
-		input_report_rel(input, rotary->rel_code, delta);
-		input_sync(input);
-	}
-}
-
-static irqreturn_t bfin_rotary_isr(int irq, void *dev_id)
-{
-	struct bfin_rot *rotary = dev_id;
-	int delta;
-
-	switch (readw(rotary->base + CNT_STATUS_OFF)) {
-
-	case ICII:
-		break;
-
-	case UCII:
-	case DCII:
-		delta = readl(rotary->base + CNT_COUNTER_OFF);
-		if (delta)
-			report_rotary_event(rotary, delta);
-		break;
-
-	case CZMII:
-		report_key_event(rotary->input, rotary->button_key);
-		break;
-
-	default:
-		break;
-	}
-
-	writew(W1LCNT_ZERO, rotary->base + CNT_COMMAND_OFF); /* Clear COUNTER */
-	writew(-1, rotary->base + CNT_STATUS_OFF); /* Clear STATUS */
-
-	return IRQ_HANDLED;
-}
-
-static int bfin_rotary_open(struct input_dev *input)
-{
-	struct bfin_rot *rotary = input_get_drvdata(input);
-	unsigned short val;
-
-	if (rotary->mode & ROT_DEBE)
-		writew(rotary->debounce & DPRESCALE,
-			rotary->base + CNT_DEBOUNCE_OFF);
-
-	writew(rotary->mode & ~CNTE, rotary->base + CNT_CONFIG_OFF);
-
-	val = UCIE | DCIE;
-	if (rotary->button_key)
-		val |= CZMIE;
-	writew(val, rotary->base + CNT_IMASK_OFF);
-
-	writew(rotary->mode | CNTE, rotary->base + CNT_CONFIG_OFF);
-
-	return 0;
-}
-
-static void bfin_rotary_close(struct input_dev *input)
-{
-	struct bfin_rot *rotary = input_get_drvdata(input);
-
-	writew(0, rotary->base + CNT_CONFIG_OFF);
-	writew(0, rotary->base + CNT_IMASK_OFF);
-}
-
-static void bfin_rotary_free_action(void *data)
-{
-	peripheral_free_list(data);
-}
-
-static int bfin_rotary_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	const struct bfin_rotary_platform_data *pdata = dev_get_platdata(dev);
-	struct bfin_rot *rotary;
-	struct resource *res;
-	struct input_dev *input;
-	int error;
-
-	/* Basic validation */
-	if ((pdata->rotary_up_key && !pdata->rotary_down_key) ||
-	    (!pdata->rotary_up_key && pdata->rotary_down_key)) {
-		return -EINVAL;
-	}
-
-	if (pdata->pin_list) {
-		error = peripheral_request_list(pdata->pin_list,
-						dev_name(dev));
-		if (error) {
-			dev_err(dev, "requesting peripherals failed: %d\n",
-				error);
-			return error;
-		}
-
-		error = devm_add_action_or_reset(dev, bfin_rotary_free_action,
-						 pdata->pin_list);
-		if (error) {
-			dev_err(dev, "setting cleanup action failed: %d\n",
-				error);
-			return error;
-		}
-	}
-
-	rotary = devm_kzalloc(dev, sizeof(struct bfin_rot), GFP_KERNEL);
-	if (!rotary)
-		return -ENOMEM;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	rotary->base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(rotary->base))
-		return PTR_ERR(rotary->base);
-
-	input = devm_input_allocate_device(dev);
-	if (!input)
-		return -ENOMEM;
-
-	rotary->input = input;
-
-	rotary->up_key = pdata->rotary_up_key;
-	rotary->down_key = pdata->rotary_down_key;
-	rotary->button_key = pdata->rotary_button_key;
-	rotary->rel_code = pdata->rotary_rel_code;
-
-	rotary->mode = pdata->mode;
-	rotary->debounce = pdata->debounce;
-
-	input->name = pdev->name;
-	input->phys = "bfin-rotary/input0";
-	input->dev.parent = dev;
-
-	input_set_drvdata(input, rotary);
-
-	input->id.bustype = BUS_HOST;
-	input->id.vendor = 0x0001;
-	input->id.product = 0x0001;
-	input->id.version = 0x0100;
-
-	input->open = bfin_rotary_open;
-	input->close = bfin_rotary_close;
-
-	if (rotary->up_key) {
-		__set_bit(EV_KEY, input->evbit);
-		__set_bit(rotary->up_key, input->keybit);
-		__set_bit(rotary->down_key, input->keybit);
-	} else {
-		__set_bit(EV_REL, input->evbit);
-		__set_bit(rotary->rel_code, input->relbit);
-	}
-
-	if (rotary->button_key) {
-		__set_bit(EV_KEY, input->evbit);
-		__set_bit(rotary->button_key, input->keybit);
-	}
-
-	/* Quiesce the device before requesting irq */
-	bfin_rotary_close(input);
-
-	rotary->irq = platform_get_irq(pdev, 0);
-	if (rotary->irq < 0) {
-		dev_err(dev, "No rotary IRQ specified\n");
-		return -ENOENT;
-	}
-
-	error = devm_request_irq(dev, rotary->irq, bfin_rotary_isr,
-				 0, dev_name(dev), rotary);
-	if (error) {
-		dev_err(dev, "unable to claim irq %d; error %d\n",
-			rotary->irq, error);
-		return error;
-	}
-
-	error = input_register_device(input);
-	if (error) {
-		dev_err(dev, "unable to register input device (%d)\n", error);
-		return error;
-	}
-
-	platform_set_drvdata(pdev, rotary);
-	device_init_wakeup(dev, 1);
-
-	return 0;
-}
-
-static int __maybe_unused bfin_rotary_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct bfin_rot *rotary = platform_get_drvdata(pdev);
-
-	rotary->cnt_config = readw(rotary->base + CNT_CONFIG_OFF);
-	rotary->cnt_imask = readw(rotary->base + CNT_IMASK_OFF);
-	rotary->cnt_debounce = readw(rotary->base + CNT_DEBOUNCE_OFF);
-
-	if (device_may_wakeup(&pdev->dev))
-		enable_irq_wake(rotary->irq);
-
-	return 0;
-}
-
-static int __maybe_unused bfin_rotary_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct bfin_rot *rotary = platform_get_drvdata(pdev);
-
-	writew(rotary->cnt_debounce, rotary->base + CNT_DEBOUNCE_OFF);
-	writew(rotary->cnt_imask, rotary->base + CNT_IMASK_OFF);
-	writew(rotary->cnt_config & ~CNTE, rotary->base + CNT_CONFIG_OFF);
-
-	if (device_may_wakeup(&pdev->dev))
-		disable_irq_wake(rotary->irq);
-
-	if (rotary->cnt_config & CNTE)
-		writew(rotary->cnt_config, rotary->base + CNT_CONFIG_OFF);
-
-	return 0;
-}
-
-static SIMPLE_DEV_PM_OPS(bfin_rotary_pm_ops,
-			 bfin_rotary_suspend, bfin_rotary_resume);
-
-static struct platform_driver bfin_rotary_device_driver = {
-	.probe		= bfin_rotary_probe,
-	.driver		= {
-		.name	= "bfin-rotary",
-		.pm	= &bfin_rotary_pm_ops,
-	},
-};
-module_platform_driver(bfin_rotary_device_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Rotary Counter driver for Blackfin Processors");
-MODULE_ALIAS("platform:bfin-rotary");
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-09-30 09:35:51 +0000