input: keyboard: remove bf54x driver (01b76495) · Commits · e / devices / android_kernel_teracube_emerald

drivers/input/keyboard/Kconfig

+0 −9

Original line number	Diff line number	Diff line
		@@ -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

+0 −1

Original line number	Diff line number	Diff line
		@@ -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

deleted100644 → 0

+0 −396

Original line number	Diff line number	Diff line
		/*
		* 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");