[PATCH] SharpSL: Add an input keyboard driver for Zaurus cxx00 series (fff71312) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/input/keyboard/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -132,6 +132,17 @@ config KEYBOARD_CORGI
		To compile this driver as a module, choose M here: the
		module will be called corgikbd.

		config KEYBOARD_SPITZ
		tristate "Spitz keyboard"
		depends on PXA_SHARPSL
		default y
		help
		Say Y here to enable the keyboard on the Sharp Zaurus SL-C1000,
		SL-C3000 and Sl-C3100 series of PDAs.

		To compile this driver as a module, choose M here: the
		module will be called spitzkbd.

		config KEYBOARD_MAPLE
		tristate "Maple bus keyboard"
		depends on SH_DREAMCAST && MAPLE

drivers/input/keyboard/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,7 @@ obj-$(CONFIG_KEYBOARD_LOCOMO) += locomokbd.o
		obj-$(CONFIG_KEYBOARD_NEWTON) += newtonkbd.o
		obj-$(CONFIG_KEYBOARD_98KBD) += 98kbd.o
		obj-$(CONFIG_KEYBOARD_CORGI) += corgikbd.o
		obj-$(CONFIG_KEYBOARD_SPITZ) += spitzkbd.o
		obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o
		obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o

drivers/input/keyboard/spitzkbd.c

0 → 100644

+478 −0

Original line number	Diff line number	Diff line
		/*
		* Keyboard driver for Sharp Spitz, Borzoi and Akita (SL-Cxx00 series)
		*
		* Copyright (c) 2005 Richard Purdie
		*
		* Based on corgikbd.c
		*
		* 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/delay.h>
		#include <linux/device.h>
		#include <linux/init.h>
		#include <linux/input.h>
		#include <linux/interrupt.h>
		#include <linux/jiffies.h>
		#include <linux/module.h>
		#include <linux/slab.h>
		#include <asm/irq.h>

		#include <asm/arch/spitz.h>
		#include <asm/arch/hardware.h>
		#include <asm/arch/pxa-regs.h>

		#define KB_ROWS 7
		#define KB_COLS 11
		#define KB_ROWMASK(r) (1 << (r))
		#define SCANCODE(r,c) (((r)<<4) + (c) + 1)
		#define NR_SCANCODES ((KB_ROWS<<4) + 1)

		#define HINGE_SCAN_INTERVAL (150) /* ms */

		#define SPITZ_KEY_CALENDER KEY_F1
		#define SPITZ_KEY_ADDRESS KEY_F2
		#define SPITZ_KEY_FN KEY_F3
		#define SPITZ_KEY_CANCEL KEY_F4
		#define SPITZ_KEY_EXOK KEY_F5
		#define SPITZ_KEY_EXCANCEL KEY_F6
		#define SPITZ_KEY_EXJOGDOWN KEY_F7
		#define SPITZ_KEY_EXJOGUP KEY_F8
		#define SPITZ_KEY_JAP1 KEY_LEFTALT
		#define SPITZ_KEY_JAP2 KEY_RIGHTCTRL
		#define SPITZ_KEY_SYNC KEY_F9
		#define SPITZ_KEY_MAIL KEY_F10
		#define SPITZ_KEY_OK KEY_F11
		#define SPITZ_KEY_MENU KEY_F12

		static unsigned char spitzkbd_keycode[NR_SCANCODES] = {
		0, /* 0 */
		KEY_LEFTCTRL, KEY_1, KEY_3, KEY_5, KEY_6, KEY_7, KEY_9, KEY_0, KEY_BACKSPACE, SPITZ_KEY_EXOK, SPITZ_KEY_EXCANCEL, 0, 0, 0, 0, 0, /* 1-16 */
		0, KEY_2, KEY_4, KEY_R, KEY_Y, KEY_8, KEY_I, KEY_O, KEY_P, SPITZ_KEY_EXJOGDOWN, SPITZ_KEY_EXJOGUP, 0, 0, 0, 0, 0, /* 17-32 */
		KEY_TAB, KEY_Q, KEY_E, KEY_T, KEY_G, KEY_U, KEY_J, KEY_K, 0, 0, 0, 0, 0, 0, 0, 0, /* 33-48 */
		SPITZ_KEY_CALENDER, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, /* 49-64 */
		SPITZ_KEY_ADDRESS, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0, /* 65-80 */
		SPITZ_KEY_MAIL, KEY_Z, KEY_X, KEY_MINUS, KEY_SPACE, KEY_COMMA, 0, KEY_UP, 0, 0, SPITZ_KEY_FN, 0, 0, 0, 0, 0, /* 81-96 */
		KEY_SYSRQ, SPITZ_KEY_JAP1, SPITZ_KEY_JAP2, SPITZ_KEY_CANCEL, SPITZ_KEY_OK, SPITZ_KEY_MENU, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0, 0, 0 /* 97-112 */
		};

		static int spitz_strobes[] = {
		SPITZ_GPIO_KEY_STROBE0,
		SPITZ_GPIO_KEY_STROBE1,
		SPITZ_GPIO_KEY_STROBE2,
		SPITZ_GPIO_KEY_STROBE3,
		SPITZ_GPIO_KEY_STROBE4,
		SPITZ_GPIO_KEY_STROBE5,
		SPITZ_GPIO_KEY_STROBE6,
		SPITZ_GPIO_KEY_STROBE7,
		SPITZ_GPIO_KEY_STROBE8,
		SPITZ_GPIO_KEY_STROBE9,
		SPITZ_GPIO_KEY_STROBE10,
		};

		static int spitz_senses[] = {
		SPITZ_GPIO_KEY_SENSE0,
		SPITZ_GPIO_KEY_SENSE1,
		SPITZ_GPIO_KEY_SENSE2,
		SPITZ_GPIO_KEY_SENSE3,
		SPITZ_GPIO_KEY_SENSE4,
		SPITZ_GPIO_KEY_SENSE5,
		SPITZ_GPIO_KEY_SENSE6,
		};

		struct spitzkbd {
		unsigned char keycode[ARRAY_SIZE(spitzkbd_keycode)];
		struct input_dev input;
		char phys[32];

		spinlock_t lock;
		struct timer_list timer;
		struct timer_list htimer;

		unsigned int suspended;
		unsigned long suspend_jiffies;
		};

		#define KB_DISCHARGE_DELAY 10
		#define KB_ACTIVATE_DELAY 10

		/* Helper functions for reading the keyboard matrix
		* Note: We should really be using pxa_gpio_mode to alter GPDR but it
		* requires a function call per GPIO bit which is excessive
		* when we need to access 11 bits at once, multiple times.
		* These functions must be called within local_irq_save()/local_irq_restore()
		* or similar.
		*/
		static inline void spitzkbd_discharge_all(void)
		{
		/* STROBE All HiZ */
		GPCR0 = SPITZ_GPIO_G0_STROBE_BIT;
		GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
		GPCR1 = SPITZ_GPIO_G1_STROBE_BIT;
		GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
		GPCR2 = SPITZ_GPIO_G2_STROBE_BIT;
		GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
		GPCR3 = SPITZ_GPIO_G3_STROBE_BIT;
		GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
		}

		static inline void spitzkbd_activate_all(void)
		{
		/* STROBE ALL -> High */
		GPSR0 = SPITZ_GPIO_G0_STROBE_BIT;
		GPDR0 \|= SPITZ_GPIO_G0_STROBE_BIT;
		GPSR1 = SPITZ_GPIO_G1_STROBE_BIT;
		GPDR1 \|= SPITZ_GPIO_G1_STROBE_BIT;
		GPSR2 = SPITZ_GPIO_G2_STROBE_BIT;
		GPDR2 \|= SPITZ_GPIO_G2_STROBE_BIT;
		GPSR3 = SPITZ_GPIO_G3_STROBE_BIT;
		GPDR3 \|= SPITZ_GPIO_G3_STROBE_BIT;

		udelay(KB_DISCHARGE_DELAY);

		/* Clear any interrupts we may have triggered when altering the GPIO lines */
		GEDR0 = SPITZ_GPIO_G0_SENSE_BIT;
		GEDR1 = SPITZ_GPIO_G1_SENSE_BIT;
		GEDR2 = SPITZ_GPIO_G2_SENSE_BIT;
		GEDR3 = SPITZ_GPIO_G3_SENSE_BIT;
		}

		static inline void spitzkbd_activate_col(int col)
		{
		int gpio = spitz_strobes[col];
		GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
		GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
		GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
		GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
		GPSR(gpio) = GPIO_bit(gpio);
		GPDR(gpio) \|= GPIO_bit(gpio);
		}

		static inline void spitzkbd_reset_col(int col)
		{
		int gpio = spitz_strobes[col];
		GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
		GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
		GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
		GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
		GPCR(gpio) = GPIO_bit(gpio);
		GPDR(gpio) \|= GPIO_bit(gpio);
		}

		static inline int spitzkbd_get_row_status(int col)
		{
		return ((GPLR0 >> 12) & 0x01) \| ((GPLR0 >> 16) & 0x02)
		\| ((GPLR2 >> 25) & 0x04) \| ((GPLR1 << 1) & 0x08)
		\| ((GPLR1 >> 0) & 0x10) \| ((GPLR1 >> 1) & 0x60);
		}

		/*
		* The spitz keyboard only generates interrupts when a key is pressed.
		* When a key is pressed, we enable a timer which then scans the
		* keyboard to detect when the key is released.
		*/

		/* Scan the hardware keyboard and push any changes up through the input layer */
		static void spitzkbd_scankeyboard(struct spitzkbd spitzkbd_data, struct pt_regs regs)
		{
		unsigned int row, col, rowd;
		unsigned long flags;
		unsigned int num_pressed, pwrkey = ((GPLR(SPITZ_GPIO_ON_KEY) & GPIO_bit(SPITZ_GPIO_ON_KEY)) != 0);

		if (spitzkbd_data->suspended)
		return;

		spin_lock_irqsave(&spitzkbd_data->lock, flags);

		if (regs)
		input_regs(&spitzkbd_data->input, regs);

		num_pressed = 0;
		for (col = 0; col < KB_COLS; col++) {
		/*
		* Discharge the output driver capacitatance
		* in the keyboard matrix. (Yes it is significant..)
		*/

		spitzkbd_discharge_all();
		udelay(KB_DISCHARGE_DELAY);

		spitzkbd_activate_col(col);
		udelay(KB_ACTIVATE_DELAY);

		rowd = spitzkbd_get_row_status(col);
		for (row = 0; row < KB_ROWS; row++) {
		unsigned int scancode, pressed;

		scancode = SCANCODE(row, col);
		pressed = rowd & KB_ROWMASK(row);

		input_report_key(&spitzkbd_data->input, spitzkbd_data->keycode[scancode], pressed);

		if (pressed)
		num_pressed++;
		}
		spitzkbd_reset_col(col);
		}

		spitzkbd_activate_all();

		input_report_key(&spitzkbd_data->input, SPITZ_KEY_SYNC, (GPLR(SPITZ_GPIO_SYNC) & GPIO_bit(SPITZ_GPIO_SYNC)) != 0 );
		input_report_key(&spitzkbd_data->input, KEY_SUSPEND, pwrkey);

		if (pwrkey && time_after(jiffies, spitzkbd_data->suspend_jiffies + msecs_to_jiffies(1000))) {
		input_event(&spitzkbd_data->input, EV_PWR, KEY_SUSPEND, 1);
		spitzkbd_data->suspend_jiffies = jiffies;
		}

		input_sync(&spitzkbd_data->input);

		/* if any keys are pressed, enable the timer */
		if (num_pressed)
		mod_timer(&spitzkbd_data->timer, jiffies + msecs_to_jiffies(100));

		spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
		}

		/*
		* spitz keyboard interrupt handler.
		*/
		static irqreturn_t spitzkbd_interrupt(int irq, void dev_id, struct pt_regs regs)
		{
		struct spitzkbd *spitzkbd_data = dev_id;

		if (!timer_pending(&spitzkbd_data->timer)) {
		/ wait chattering delay /
		udelay(20);
		spitzkbd_scankeyboard(spitzkbd_data, regs);
		}

		return IRQ_HANDLED;
		}

		/*
		* spitz timer checking for released keys
		*/
		static void spitzkbd_timer_callback(unsigned long data)
		{
		struct spitzkbd spitzkbd_data = (struct spitzkbd ) data;
		spitzkbd_scankeyboard(spitzkbd_data, NULL);
		}

		/*
		* The hinge switches generate an interrupt.
		* We debounce the switches and pass them to the input system.
		*/

		static irqreturn_t spitzkbd_hinge_isr(int irq, void dev_id, struct pt_regs regs)
		{
		struct spitzkbd *spitzkbd_data = dev_id;

		if (!timer_pending(&spitzkbd_data->htimer))
		mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));

		return IRQ_HANDLED;
		}

		#define HINGE_STABLE_COUNT 2
		static int sharpsl_hinge_state;
		static int hinge_count;

		static void spitzkbd_hinge_timer(unsigned long data)
		{
		struct spitzkbd spitzkbd_data = (struct spitzkbd ) data;
		unsigned long state;
		unsigned long flags;

		state = GPLR(SPITZ_GPIO_SWA) & (GPIO_bit(SPITZ_GPIO_SWA)\|GPIO_bit(SPITZ_GPIO_SWB));
		if (state != sharpsl_hinge_state) {
		hinge_count = 0;
		sharpsl_hinge_state = state;
		} else if (hinge_count < HINGE_STABLE_COUNT) {
		hinge_count++;
		}

		if (hinge_count >= HINGE_STABLE_COUNT) {
		spin_lock_irqsave(&spitzkbd_data->lock, flags);

		input_report_switch(&spitzkbd_data->input, SW_0, ((GPLR(SPITZ_GPIO_SWA) & GPIO_bit(SPITZ_GPIO_SWA)) != 0));
		input_report_switch(&spitzkbd_data->input, SW_1, ((GPLR(SPITZ_GPIO_SWB) & GPIO_bit(SPITZ_GPIO_SWB)) != 0));
		input_sync(&spitzkbd_data->input);

		spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
		} else {
		mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
		}
		}

		#ifdef CONFIG_PM
		static int spitzkbd_suspend(struct device *dev, pm_message_t state, uint32_t level)
		{
		if (level == SUSPEND_POWER_DOWN) {
		int i;
		struct spitzkbd *spitzkbd = dev_get_drvdata(dev);
		spitzkbd->suspended = 1;

		/* Set Strobe lines as inputs - except strobe line 0 leave this
		enabled so we can detect a power button press for resume */
		for (i = 1; i < SPITZ_KEY_STROBE_NUM; i++)
		pxa_gpio_mode(spitz_strobes[i] \| GPIO_IN);
		}
		return 0;
		}

		static int spitzkbd_resume(struct device *dev, uint32_t level)
		{
		if (level == RESUME_POWER_ON) {
		int i;
		struct spitzkbd *spitzkbd = dev_get_drvdata(dev);

		for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
		pxa_gpio_mode(spitz_strobes[i] \| GPIO_OUT \| GPIO_DFLT_HIGH);

		/* Upon resume, ignore the suspend key for a short while */
		spitzkbd->suspend_jiffies = jiffies;
		spitzkbd->suspended = 0;
		}
		return 0;
		}
		#else
		#define spitzkbd_suspend NULL
		#define spitzkbd_resume NULL
		#endif

		static int __init spitzkbd_probe(struct device *dev)
		{
		int i;
		struct spitzkbd *spitzkbd;

		spitzkbd = kzalloc(sizeof(struct spitzkbd), GFP_KERNEL);
		if (!spitzkbd)
		return -ENOMEM;

		dev_set_drvdata(dev,spitzkbd);
		strcpy(spitzkbd->phys, "spitzkbd/input0");

		spin_lock_init(&spitzkbd->lock);

		/* Init Keyboard rescan timer */
		init_timer(&spitzkbd->timer);
		spitzkbd->timer.function = spitzkbd_timer_callback;
		spitzkbd->timer.data = (unsigned long) spitzkbd;

		/* Init Hinge Timer */
		init_timer(&spitzkbd->htimer);
		spitzkbd->htimer.function = spitzkbd_hinge_timer;
		spitzkbd->htimer.data = (unsigned long) spitzkbd;

		spitzkbd->suspend_jiffies=jiffies;

		init_input_dev(&spitzkbd->input);
		spitzkbd->input.private = spitzkbd;
		spitzkbd->input.name = "Spitz Keyboard";
		spitzkbd->input.dev = dev;
		spitzkbd->input.phys = spitzkbd->phys;
		spitzkbd->input.id.bustype = BUS_HOST;
		spitzkbd->input.id.vendor = 0x0001;
		spitzkbd->input.id.product = 0x0001;
		spitzkbd->input.id.version = 0x0100;
		spitzkbd->input.evbit[0] = BIT(EV_KEY) \| BIT(EV_REP) \| BIT(EV_PWR) \| BIT(EV_SW);
		spitzkbd->input.keycode = spitzkbd->keycode;
		spitzkbd->input.keycodesize = sizeof(unsigned char);
		spitzkbd->input.keycodemax = ARRAY_SIZE(spitzkbd_keycode);

		memcpy(spitzkbd->keycode, spitzkbd_keycode, sizeof(spitzkbd->keycode));
		for (i = 0; i < ARRAY_SIZE(spitzkbd_keycode); i++)
		set_bit(spitzkbd->keycode[i], spitzkbd->input.keybit);
		clear_bit(0, spitzkbd->input.keybit);
		set_bit(SW_0, spitzkbd->input.swbit);
		set_bit(SW_1, spitzkbd->input.swbit);

		input_register_device(&spitzkbd->input);
		mod_timer(&spitzkbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));

		/* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
		for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++) {
		pxa_gpio_mode(spitz_senses[i] \| GPIO_IN);
		if (request_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd_interrupt,
		SA_INTERRUPT, "Spitzkbd Sense", spitzkbd))
		printk(KERN_WARNING "spitzkbd: Can't get Sense IRQ: %d!\n", i);
		else
		set_irq_type(IRQ_GPIO(spitz_senses[i]),IRQT_RISING);
		}

		/* Set Strobe lines as outputs - set high */
		for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
		pxa_gpio_mode(spitz_strobes[i] \| GPIO_OUT \| GPIO_DFLT_HIGH);

		pxa_gpio_mode(SPITZ_GPIO_SYNC \| GPIO_IN);
		pxa_gpio_mode(SPITZ_GPIO_ON_KEY \| GPIO_IN);
		pxa_gpio_mode(SPITZ_GPIO_SWA \| GPIO_IN);
		pxa_gpio_mode(SPITZ_GPIO_SWB \| GPIO_IN);

		request_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd_interrupt, SA_INTERRUPT, "Spitzkbd Sync", spitzkbd);
		request_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd_interrupt, SA_INTERRUPT, "Spitzkbd PwrOn", spitzkbd);
		request_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd_hinge_isr, SA_INTERRUPT, "Spitzkbd SWA", spitzkbd);
		request_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd_hinge_isr, SA_INTERRUPT, "Spitzkbd SWB", spitzkbd);

		set_irq_type(SPITZ_IRQ_GPIO_SYNC, IRQT_BOTHEDGE);
		set_irq_type(SPITZ_IRQ_GPIO_ON_KEY, IRQT_BOTHEDGE);
		set_irq_type(SPITZ_IRQ_GPIO_SWA, IRQT_BOTHEDGE);
		set_irq_type(SPITZ_IRQ_GPIO_SWB, IRQT_BOTHEDGE);

		printk(KERN_INFO "input: Spitz Keyboard Registered\n");

		return 0;
		}

		static int spitzkbd_remove(struct device *dev)
		{
		int i;
		struct spitzkbd *spitzkbd = dev_get_drvdata(dev);

		for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++)
		free_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd);

		free_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd);
		free_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd);
		free_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd);
		free_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd);

		del_timer_sync(&spitzkbd->htimer);
		del_timer_sync(&spitzkbd->timer);

		input_unregister_device(&spitzkbd->input);

		kfree(spitzkbd);

		return 0;
		}

		static struct device_driver spitzkbd_driver = {
		.name = "spitz-keyboard",
		.bus = &platform_bus_type,
		.probe = spitzkbd_probe,
		.remove = spitzkbd_remove,
		.suspend = spitzkbd_suspend,
		.resume = spitzkbd_resume,
		};

		static int __devinit spitzkbd_init(void)
		{
		return driver_register(&spitzkbd_driver);
		}

		static void __exit spitzkbd_exit(void)
		{
		driver_unregister(&spitzkbd_driver);
		}

		module_init(spitzkbd_init);
		module_exit(spitzkbd_exit);

		MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
		MODULE_DESCRIPTION("Spitz Keyboard Driver");
		MODULE_LICENSE("GPLv2");