input: keyboard: remove bf54x driver

The blackfin architecture is getting removed, so this
driver is now obsolete.
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/input/keyboard/Kconfig

@@ -157,15 +157,6 @@ config KEYBOARD_QT2160
 	  This driver can also be built as a module. If so, the module
 	  will be called qt2160.
 
-config KEYBOARD_BFIN
-	tristate "Blackfin BF54x keypad support"
-	depends on (BF54x && !BF544)
-	help
-	  Say Y here if you want to use the BF54x keypad.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bf54x-keys.
-
 config KEYBOARD_CLPS711X
 	tristate "CLPS711X Keypad support"
 	depends on OF_GPIO && (ARCH_CLPS711X || COMPILE_TEST)

drivers/input/keyboard/Makefile

@@ -13,7 +13,6 @@ obj-$(CONFIG_KEYBOARD_AMIGA)		+= amikbd.o
 obj-$(CONFIG_KEYBOARD_ATARI)		+= atakbd.o
 obj-$(CONFIG_KEYBOARD_ATKBD)		+= atkbd.o
 obj-$(CONFIG_KEYBOARD_BCM)		+= bcm-keypad.o
-obj-$(CONFIG_KEYBOARD_BFIN)		+= bf54x-keys.o
 obj-$(CONFIG_KEYBOARD_CAP11XX)		+= cap11xx.o
 obj-$(CONFIG_KEYBOARD_CLPS711X)		+= clps711x-keypad.o
 obj-$(CONFIG_KEYBOARD_CROS_EC)		+= cros_ec_keyb.o

drivers/input/keyboard/bf54x-keys.c

-/*
- * File:         drivers/input/keyboard/bf54x-keys.c
- * Based on:
- * Author:       Michael Hennerich <hennerich@blackfin.uclinux.org>
- *
- * Created:
- * Description:  keypad driver for Analog Devices Blackfin BF54x Processors
- *
- *
- * Modified:
- *               Copyright 2007-2008 Analog Devices Inc.
- *
- * Bugs:         Enter bugs at http://blackfin.uclinux.org/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-#include <linux/module.h>
-
-#include <linux/fs.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/pm.h>
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/input.h>
-
-#include <asm/portmux.h>
-#include <mach/bf54x_keys.h>
-
-#define DRV_NAME	"bf54x-keys"
-#define TIME_SCALE	100	/* 100 ns */
-#define	MAX_MULT	(0xFF * TIME_SCALE)
-#define MAX_RC		8	/* Max Row/Col */
-
-static const u16 per_rows[] = {
-	P_KEY_ROW7,
-	P_KEY_ROW6,
-	P_KEY_ROW5,
-	P_KEY_ROW4,
-	P_KEY_ROW3,
-	P_KEY_ROW2,
-	P_KEY_ROW1,
-	P_KEY_ROW0,
-	0
-};
-
-static const u16 per_cols[] = {
-	P_KEY_COL7,
-	P_KEY_COL6,
-	P_KEY_COL5,
-	P_KEY_COL4,
-	P_KEY_COL3,
-	P_KEY_COL2,
-	P_KEY_COL1,
-	P_KEY_COL0,
-	0
-};
-
-struct bf54x_kpad {
-	struct input_dev *input;
-	int irq;
-	unsigned short lastkey;
-	unsigned short *keycode;
-	struct timer_list timer;
-	unsigned int keyup_test_jiffies;
-	unsigned short kpad_msel;
-	unsigned short kpad_prescale;
-	unsigned short kpad_ctl;
-};
-
-static inline int bfin_kpad_find_key(struct bf54x_kpad *bf54x_kpad,
-			struct input_dev *input, u16 keyident)
-{
-	u16 i;
-
-	for (i = 0; i < input->keycodemax; i++)
-		if (bf54x_kpad->keycode[i + input->keycodemax] == keyident)
-			return bf54x_kpad->keycode[i];
-	return -1;
-}
-
-static inline void bfin_keycodecpy(unsigned short *keycode,
-			const unsigned int *pdata_kc,
-			unsigned short keymapsize)
-{
-	unsigned int i;
-
-	for (i = 0; i < keymapsize; i++) {
-		keycode[i] = pdata_kc[i] & 0xffff;
-		keycode[i + keymapsize] = pdata_kc[i] >> 16;
-	}
-}
-
-static inline u16 bfin_kpad_get_prescale(u32 timescale)
-{
-	u32 sclk = get_sclk();
-
-	return ((((sclk / 1000) * timescale) / 1024) - 1);
-}
-
-static inline u16 bfin_kpad_get_keypressed(struct bf54x_kpad *bf54x_kpad)
-{
-	return (bfin_read_KPAD_STAT() & KPAD_PRESSED);
-}
-
-static inline void bfin_kpad_clear_irq(void)
-{
-	bfin_write_KPAD_STAT(0xFFFF);
-	bfin_write_KPAD_ROWCOL(0xFFFF);
-}
-
-static void bfin_kpad_timer(struct timer_list *t)
-{
-	struct bf54x_kpad *bf54x_kpad = from_timer(bf54x_kpad, t, timer);
-
-	if (bfin_kpad_get_keypressed(bf54x_kpad)) {
-		/* Try again later */
-		mod_timer(&bf54x_kpad->timer,
-			  jiffies + bf54x_kpad->keyup_test_jiffies);
-		return;
-	}
-
-	input_report_key(bf54x_kpad->input, bf54x_kpad->lastkey, 0);
-	input_sync(bf54x_kpad->input);
-
-	/* Clear IRQ Status */
-
-	bfin_kpad_clear_irq();
-	enable_irq(bf54x_kpad->irq);
-}
-
-static irqreturn_t bfin_kpad_isr(int irq, void *dev_id)
-{
-	struct platform_device *pdev = dev_id;
-	struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
-	struct input_dev *input = bf54x_kpad->input;
-	int key;
-	u16 rowcol = bfin_read_KPAD_ROWCOL();
-
-	key = bfin_kpad_find_key(bf54x_kpad, input, rowcol);
-
-	input_report_key(input, key, 1);
-	input_sync(input);
-
-	if (bfin_kpad_get_keypressed(bf54x_kpad)) {
-		disable_irq_nosync(bf54x_kpad->irq);
-		bf54x_kpad->lastkey = key;
-		mod_timer(&bf54x_kpad->timer,
-			  jiffies + bf54x_kpad->keyup_test_jiffies);
-	} else {
-		input_report_key(input, key, 0);
-		input_sync(input);
-
-		bfin_kpad_clear_irq();
-	}
-
-	return IRQ_HANDLED;
-}
-
-static int bfin_kpad_probe(struct platform_device *pdev)
-{
-	struct bf54x_kpad *bf54x_kpad;
-	struct bfin_kpad_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	struct input_dev *input;
-	int i, error;
-
-	if (!pdata->rows || !pdata->cols || !pdata->keymap) {
-		dev_err(&pdev->dev, "no rows, cols or keymap from pdata\n");
-		return -EINVAL;
-	}
-
-	if (!pdata->keymapsize ||
-	    pdata->keymapsize > (pdata->rows * pdata->cols)) {
-		dev_err(&pdev->dev, "invalid keymapsize\n");
-		return -EINVAL;
-	}
-
-	bf54x_kpad = kzalloc(sizeof(struct bf54x_kpad), GFP_KERNEL);
-	if (!bf54x_kpad)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, bf54x_kpad);
-
-	/* Allocate memory for keymap followed by private LUT */
-	bf54x_kpad->keycode = kmalloc(pdata->keymapsize *
-					sizeof(unsigned short) * 2, GFP_KERNEL);
-	if (!bf54x_kpad->keycode) {
-		error = -ENOMEM;
-		goto out;
-	}
-
-	if (!pdata->debounce_time || pdata->debounce_time > MAX_MULT ||
-	    !pdata->coldrive_time || pdata->coldrive_time > MAX_MULT) {
-		dev_warn(&pdev->dev,
-			"invalid platform debounce/columndrive time\n");
-		bfin_write_KPAD_MSEL(0xFF0);	/* Default MSEL	*/
-	} else {
-		bfin_write_KPAD_MSEL(
-			((pdata->debounce_time / TIME_SCALE)
-						& DBON_SCALE) |
-			(((pdata->coldrive_time / TIME_SCALE) << 8)
-						& COLDRV_SCALE));
-
-	}
-
-	if (!pdata->keyup_test_interval)
-		bf54x_kpad->keyup_test_jiffies = msecs_to_jiffies(50);
-	else
-		bf54x_kpad->keyup_test_jiffies =
-			msecs_to_jiffies(pdata->keyup_test_interval);
-
-	if (peripheral_request_list((u16 *)&per_rows[MAX_RC - pdata->rows],
-				    DRV_NAME)) {
-		dev_err(&pdev->dev, "requesting peripherals failed\n");
-		error = -EFAULT;
-		goto out0;
-	}
-
-	if (peripheral_request_list((u16 *)&per_cols[MAX_RC - pdata->cols],
-				    DRV_NAME)) {
-		dev_err(&pdev->dev, "requesting peripherals failed\n");
-		error = -EFAULT;
-		goto out1;
-	}
-
-	bf54x_kpad->irq = platform_get_irq(pdev, 0);
-	if (bf54x_kpad->irq < 0) {
-		error = -ENODEV;
-		goto out2;
-	}
-
-	error = request_irq(bf54x_kpad->irq, bfin_kpad_isr,
-				0, DRV_NAME, pdev);
-	if (error) {
-		dev_err(&pdev->dev, "unable to claim irq %d\n",
-			bf54x_kpad->irq);
-		goto out2;
-	}
-
-	input = input_allocate_device();
-	if (!input) {
-		error = -ENOMEM;
-		goto out3;
-	}
-
-	bf54x_kpad->input = input;
-
-	input->name = pdev->name;
-	input->phys = "bf54x-keys/input0";
-	input->dev.parent = &pdev->dev;
-
-	input->id.bustype = BUS_HOST;
-	input->id.vendor = 0x0001;
-	input->id.product = 0x0001;
-	input->id.version = 0x0100;
-
-	input->keycodesize = sizeof(unsigned short);
-	input->keycodemax = pdata->keymapsize;
-	input->keycode = bf54x_kpad->keycode;
-
-	bfin_keycodecpy(bf54x_kpad->keycode, pdata->keymap, pdata->keymapsize);
-
-	/* setup input device */
-	__set_bit(EV_KEY, input->evbit);
-
-	if (pdata->repeat)
-		__set_bit(EV_REP, input->evbit);
-
-	for (i = 0; i < input->keycodemax; i++)
-		if (bf54x_kpad->keycode[i] <= KEY_MAX)
-			__set_bit(bf54x_kpad->keycode[i], input->keybit);
-	__clear_bit(KEY_RESERVED, input->keybit);
-
-	error = input_register_device(input);
-	if (error) {
-		dev_err(&pdev->dev, "unable to register input device\n");
-		goto out4;
-	}
-
-	/* Init Keypad Key Up/Release test timer */
-
-	timer_setup(&bf54x_kpad->timer, bfin_kpad_timer, 0);
-
-	bfin_write_KPAD_PRESCALE(bfin_kpad_get_prescale(TIME_SCALE));
-
-	bfin_write_KPAD_CTL((((pdata->cols - 1) << 13) & KPAD_COLEN) |
-				(((pdata->rows - 1) << 10) & KPAD_ROWEN) |
-				(2 & KPAD_IRQMODE));
-
-	bfin_write_KPAD_CTL(bfin_read_KPAD_CTL() | KPAD_EN);
-
-	device_init_wakeup(&pdev->dev, 1);
-
-	return 0;
-
-out4:
-	input_free_device(input);
-out3:
-	free_irq(bf54x_kpad->irq, pdev);
-out2:
-	peripheral_free_list((u16 *)&per_cols[MAX_RC - pdata->cols]);
-out1:
-	peripheral_free_list((u16 *)&per_rows[MAX_RC - pdata->rows]);
-out0:
-	kfree(bf54x_kpad->keycode);
-out:
-	kfree(bf54x_kpad);
-
-	return error;
-}
-
-static int bfin_kpad_remove(struct platform_device *pdev)
-{
-	struct bfin_kpad_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
-
-	del_timer_sync(&bf54x_kpad->timer);
-	free_irq(bf54x_kpad->irq, pdev);
-
-	input_unregister_device(bf54x_kpad->input);
-
-	peripheral_free_list((u16 *)&per_rows[MAX_RC - pdata->rows]);
-	peripheral_free_list((u16 *)&per_cols[MAX_RC - pdata->cols]);
-
-	kfree(bf54x_kpad->keycode);
-	kfree(bf54x_kpad);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int bfin_kpad_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
-
-	bf54x_kpad->kpad_msel = bfin_read_KPAD_MSEL();
-	bf54x_kpad->kpad_prescale = bfin_read_KPAD_PRESCALE();
-	bf54x_kpad->kpad_ctl = bfin_read_KPAD_CTL();
-
-	if (device_may_wakeup(&pdev->dev))
-		enable_irq_wake(bf54x_kpad->irq);
-
-	return 0;
-}
-
-static int bfin_kpad_resume(struct platform_device *pdev)
-{
-	struct bf54x_kpad *bf54x_kpad = platform_get_drvdata(pdev);
-
-	bfin_write_KPAD_MSEL(bf54x_kpad->kpad_msel);
-	bfin_write_KPAD_PRESCALE(bf54x_kpad->kpad_prescale);
-	bfin_write_KPAD_CTL(bf54x_kpad->kpad_ctl);
-
-	if (device_may_wakeup(&pdev->dev))
-		disable_irq_wake(bf54x_kpad->irq);
-
-	return 0;
-}
-#else
-# define bfin_kpad_suspend NULL
-# define bfin_kpad_resume  NULL
-#endif
-
-static struct platform_driver bfin_kpad_device_driver = {
-	.driver		= {
-		.name	= DRV_NAME,
-	},
-	.probe		= bfin_kpad_probe,
-	.remove		= bfin_kpad_remove,
-	.suspend	= bfin_kpad_suspend,
-	.resume		= bfin_kpad_resume,
-};
-module_platform_driver(bfin_kpad_device_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Keypad driver for BF54x Processors");
-MODULE_ALIAS("platform:bf54x-keys");