path: root/recipes/linux/linux-rp-2.6.23/tosa-keyboard-r19.patch

 drivers/input/keyboard/Kconfig   |   12 -
 drivers/input/keyboard/Makefile  |    1 
 drivers/input/keyboard/tosakbd.c |  467 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 479 insertions(+), 1 deletion(-)

Index: git/drivers/input/keyboard/Kconfig
===================================================================
--- git.orig/drivers/input/keyboard/Kconfig	2006-10-31 16:08:57.000000000 +0000
+++ git/drivers/input/keyboard/Kconfig	2006-11-07 22:13:10.000000000 +0000
@@ -148,12 +148,22 @@ config KEYBOARD_SPITZ
 	depends on PXA_SHARPSL
 	default y
 	help
-	  Say Y here to enable the keyboard on the Sharp Zaurus SL-C1000,
+    	  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_TOSA
+	tristate "Tosa keyboard"
+	depends on PXA_SHARPSL
+	default y
+	help
+	  Say Y here to enable the keyboard on the Sharp Zaurus SL-6000x (Tosa)
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tosakbd.
+
 config KEYBOARD_AMIGA
 	tristate "Amiga keyboard"
 	depends on AMIGA
Index: git/drivers/input/keyboard/Makefile
===================================================================
--- git.orig/drivers/input/keyboard/Makefile	2006-10-31 16:08:57.000000000 +0000
+++ git/drivers/input/keyboard/Makefile	2006-11-07 22:13:10.000000000 +0000
@@ -17,3 +17,4 @@ obj-$(CONFIG_KEYBOARD_SPITZ)		+= spitzkb
 obj-$(CONFIG_KEYBOARD_AAED2000)		+= aaed2000_kbd.o
 obj-$(CONFIG_KEYBOARD_GPIO)		+= gpio_keys.o
 obj-$(CONFIG_KEYBOARD_ASIC3)		+= asic3_keys.o
+obj-$(CONFIG_KEYBOARD_TOSA)		+= tosakbd.o
Index: git/drivers/input/keyboard/tosakbd.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ git/drivers/input/keyboard/tosakbd.c	2006-11-07 23:27:19.000000000 +0000
@@ -0,0 +1,467 @@
+/*
+ *  Keyboard driver for Sharp Tosa models (SL-6000x)
+ *
+ *  Copyright (c) 2005 Dirk Opfer
+ *
+ *  Based on xtkbd.c/locomkbd.c/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/platform_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/arch/tosa.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/pxa-regs.h>
+
+
+#define TOSA_KEY_STROBE_NUM	(11)
+#define TOSA_KEY_SENSE_NUM	(7)
+
+#define KEYMASK_ON		(0x1<<0)
+#define KEYMASK_REC		(0x1<<1)
+#define KEYMASK_SYNC		(0x1<<2)
+
+#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		(SCANCODE(KB_ROWS-1,KB_COLS)+1+1) 
+
+#define SCAN_INTERVAL		(HZ/10)
+#define HP_SCAN_INTERVAL	(150) /* ms */
+#define HP_STABLE_COUNT		2
+
+#define TOSA_KEY_CALENDER       KEY_F1
+#define TOSA_KEY_ADDRESS        KEY_F2
+#define TOSA_KEY_FN             KEY_F3
+#define TOSA_KEY_CANCEL        	KEY_F4
+#define TOSA_KEY_OFF            KEY_SUSPEND
+#define TOSA_KEY_CENTER         KEY_F5
+#define TOSA_KEY_REC            KEY_F6
+#define TOSA_KEY_LIGHT          KEY_F7
+#define TOSA_KEY_RECORD         KEY_F8
+#define TOSA_KEY_HOME           KEY_F9
+#define TOSA_KEY_MAIL           KEY_F10
+#define TOSA_KEY_OK             KEY_F11
+#define TOSA_KEY_MENU           KEY_F12
+#define TOSA_KEY_SYNC           KEY_F13
+
+#define GET_ROWS_STATUS(c)	((GPLR2 & TOSA_GPIO_ALL_SENSE_BIT) >> TOSA_GPIO_ALL_SENSE_RSHIFT)
+#define KB_DISCHARGE_DELAY	10
+#define KB_ACTIVATE_DELAY	10
+
+
+static unsigned char tosakbd_keycode[NR_SCANCODES] = {
+	0,                                                                                                              	/* 0 */
+	0, KEY_W, 0, 0, 0, KEY_K, KEY_BACKSPACE, KEY_P, 0, 0, 0, TOSA_KEY_OFF, 0, 0, 0, 0,					/*1 - 16*/
+	KEY_Q, KEY_E, KEY_T, KEY_Y, 0, KEY_O, KEY_I, KEY_COMMA, 0, 0, 0, TOSA_KEY_RECORD, 0, 0, 0, 0,				/*17 - 32*/
+	KEY_A, KEY_D, KEY_G, KEY_U, 0, KEY_L, KEY_ENTER, KEY_DOT, 0, 0, 0, TOSA_KEY_SYNC, 0, 0, 0, 0,				/*33 - 48*/
+	KEY_Z, KEY_C, KEY_V, KEY_J, TOSA_KEY_ADDRESS, TOSA_KEY_CANCEL, TOSA_KEY_CENTER, TOSA_KEY_OK, KEY_LEFTSHIFT, 0 , 0,0 , 0, 0, 0, 0,	/*49 - 64*/
+	KEY_S, KEY_R, KEY_B, KEY_N, TOSA_KEY_CALENDER, TOSA_KEY_HOME, TOSA_KEY_REC, TOSA_KEY_LIGHT, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0,	/*65 - 80*/
+	KEY_TAB, KEY_SLASH, KEY_H, KEY_M, TOSA_KEY_MENU, 0, KEY_UP, 0, 0, 0, TOSA_KEY_FN, 0, 0, 0, 0, 0,			/*81 - 96*/
+	KEY_X, KEY_F, KEY_SPACE, KEY_APOSTROPHE, TOSA_KEY_MAIL, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0,  			/*97 - 109*/
+};
+
+struct tosakbd {
+	unsigned char keycode[ARRAY_SIZE(tosakbd_keycode)];
+	struct input_dev *input;
+
+	spinlock_t lock;
+	struct timer_list timer;
+	struct timer_list hptimer;
+
+	int hp_state;
+	int hp_count;
+
+	unsigned int suspended;
+	unsigned long suspend_jiffies;
+};
+
+/* 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 12 bits at once, multiple times.
+ * These functions must be called within local_irq_save()/local_irq_restore()
+ * or similar. 
+ */
+static inline void tosakbd_discharge_all(void)
+{
+	/* STROBE All HiZ */
+	GPCR1  = TOSA_GPIO_HIGH_STROBE_BIT;
+	GPDR1 &= ~TOSA_GPIO_HIGH_STROBE_BIT;
+	GPCR2  = TOSA_GPIO_LOW_STROBE_BIT;
+	GPDR2 &= ~TOSA_GPIO_LOW_STROBE_BIT;
+}
+
+static inline void tosakbd_activate_all(void)
+{
+	/* STROBE ALL -> High */
+	GPSR1  = TOSA_GPIO_HIGH_STROBE_BIT;
+	GPDR1 |= TOSA_GPIO_HIGH_STROBE_BIT;
+	GPSR2  = TOSA_GPIO_LOW_STROBE_BIT;
+	GPDR2 |= TOSA_GPIO_LOW_STROBE_BIT;
+
+	udelay(KB_DISCHARGE_DELAY);
+
+	/* STATE CLEAR */
+	GEDR2 |= TOSA_GPIO_ALL_SENSE_BIT; 
+}
+
+static inline void tosakbd_activate_col(int col)
+{
+	if (col<=5) {
+		/* STROBE col -> High, not col -> HiZ */
+		GPSR1 = TOSA_GPIO_STROBE_BIT(col);
+	 	GPDR1 = (GPDR1 & ~TOSA_GPIO_HIGH_STROBE_BIT) | TOSA_GPIO_STROBE_BIT(col);
+	} else {
+		/* STROBE col -> High, not col -> HiZ */
+		GPSR2 = TOSA_GPIO_STROBE_BIT(col);
+		GPDR2 = (GPDR2 & ~TOSA_GPIO_LOW_STROBE_BIT) | TOSA_GPIO_STROBE_BIT(col);
+	} 
+}
+
+static inline void tosakbd_reset_col(int col)
+{
+	if (col<=5) {
+		/* STROBE col -> Low */
+		GPCR1 = TOSA_GPIO_STROBE_BIT(col);
+		/* STROBE col -> out, not col -> HiZ */
+		GPDR1 = (GPDR1 & ~TOSA_GPIO_HIGH_STROBE_BIT) | TOSA_GPIO_STROBE_BIT(col);
+	} else {
+		/* STROBE col -> Low */
+		GPCR2 = TOSA_GPIO_STROBE_BIT(col);
+		/* STROBE col -> out, not col -> HiZ */
+		GPDR2 = (GPDR2 & ~TOSA_GPIO_LOW_STROBE_BIT) | TOSA_GPIO_STROBE_BIT(col);
+	} 
+}
+
+/*
+ * Read the GPIOs for POWER, RECORD and SYNC
+ */
+static int read_port_key_status_raw(void)
+{
+	int val=0;
+
+	/* Power key */
+	if ((GPLR0 & GPIO_bit(TOSA_GPIO_ON_KEY))==0)
+		val |= KEYMASK_ON;
+	/* Record key */
+	if ((GPLR0 & GPIO_bit(TOSA_GPIO_RECORD_BTN))==0)
+		val |= KEYMASK_REC;
+	/* Sync key */
+	if ((GPLR0 & GPIO_bit(TOSA_GPIO_SYNC))==0)
+		val |= KEYMASK_SYNC;
+	return val;
+}
+
+
+/*
+ * The tosa keyboard only generates interrupts when a key is pressed.
+ * So when a key is pressed, we enable a timer.  This timer scans the
+ * keyboard, and this is how we detect when the key is released.
+ */
+
+/* Scan the hardware keyboard and push any changes up through the input layer */
+static void tosakbd_scankeyboard(struct tosakbd *tosakbd_data) 
+{
+	unsigned int row, col, rowd;
+	unsigned long flags;
+	unsigned int num_pressed = 0;
+
+	if (tosakbd_data->suspended)
+		return;
+
+	spin_lock_irqsave(&tosakbd_data->lock, flags);
+
+	for (col = 0; col < KB_COLS; col++) {
+		/*
+		 * Discharge the output driver capacitatance
+		 * in the keyboard matrix. (Yes it is significant..)
+		 */
+		tosakbd_discharge_all();
+		udelay(KB_DISCHARGE_DELAY);
+
+		tosakbd_activate_col( col);
+		udelay(KB_ACTIVATE_DELAY);
+		
+		rowd = GET_ROWS_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(tosakbd_data->input, tosakbd_data->keycode[scancode], pressed);
+			if (pressed)
+				num_pressed++;
+		}
+
+		tosakbd_reset_col(col);
+	}
+
+	tosakbd_activate_all();
+
+	rowd = read_port_key_status_raw();
+
+	for (row = 0; row < 3; row++ ) {
+		unsigned int scancode, pressed;
+		scancode = SCANCODE(row, KB_COLS);
+		pressed = rowd & KB_ROWMASK(row);
+		input_report_key(tosakbd_data->input, tosakbd_data->keycode[scancode], pressed);
+		if (pressed)
+			num_pressed++;
+
+		if (pressed && (tosakbd_data->keycode[scancode] == TOSA_KEY_OFF)
+								&& time_after(jiffies, tosakbd_data->suspend_jiffies + msecs_to_jiffies(1000))) {
+			input_event(tosakbd_data->input, EV_PWR, TOSA_KEY_OFF, 1);
+			tosakbd_data->suspend_jiffies = jiffies;
+		}
+	}
+	
+	input_sync(tosakbd_data->input);
+
+	/* if any keys are pressed, enable the timer */
+	if (num_pressed)
+		mod_timer(&tosakbd_data->timer, jiffies + SCAN_INTERVAL);
+
+	spin_unlock_irqrestore(&tosakbd_data->lock, flags);
+}
+
+/* 
+ * tosa keyboard interrupt handler.
+ */
+static irqreturn_t tosakbd_interrupt(int irq, void *dev_id)
+{
+	struct tosakbd *tosakbd_data = dev_id;
+
+	if (!timer_pending(&tosakbd_data->timer)) 
+	{
+		/** wait chattering delay **/
+		udelay(20);
+		tosakbd_scankeyboard(tosakbd_data);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * tosa timer checking for released keys
+ */
+static void tosakbd_timer_callback(unsigned long data)
+{
+	struct tosakbd *tosakbd_data = (struct tosakbd *) data;
+	tosakbd_scankeyboard(tosakbd_data);
+}
+
+/*
+ * The headphone generates an interrupt.
+ * We debounce the switche and pass them to the input system.
+ */
+
+static irqreturn_t tosakbd_hp_isr(int irq, void *dev_id)
+{
+	struct tosakbd *tosakbd_data = dev_id;
+
+	if (!timer_pending(&tosakbd_data->hptimer))
+		mod_timer(&tosakbd_data->hptimer, jiffies + msecs_to_jiffies(HP_SCAN_INTERVAL));
+
+	return IRQ_HANDLED;
+}
+
+static void tosakbd_hp_timer(unsigned long data)
+{
+	struct tosakbd *tosakbd_data = (struct tosakbd *) data;
+	unsigned long state;
+	unsigned long flags;
+
+	state = (GPLR(TOSA_GPIO_EAR_IN) & GPIO_bit(TOSA_GPIO_EAR_IN));
+	if (state != tosakbd_data->hp_state) {
+		tosakbd_data->hp_count = 0;
+		tosakbd_data->hp_state = state;
+	} else if (tosakbd_data->hp_count < HP_STABLE_COUNT) {
+		tosakbd_data->hp_count++;
+	}
+
+	if (tosakbd_data->hp_count >= HP_STABLE_COUNT) {
+		spin_lock_irqsave(&tosakbd_data->lock, flags);
+
+		input_report_switch(tosakbd_data->input, SW_HEADPHONE_INSERT, ((GPLR(TOSA_GPIO_EAR_IN) & GPIO_bit(TOSA_GPIO_EAR_IN)) == 0));
+		input_sync(tosakbd_data->input);
+
+		spin_unlock_irqrestore(&tosakbd_data->lock, flags);
+	} else {
+		mod_timer(&tosakbd_data->hptimer, jiffies + msecs_to_jiffies(HP_SCAN_INTERVAL));
+	}
+}
+
+#ifdef CONFIG_PM
+static int tosakbd_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct tosakbd *tosakbd = platform_get_drvdata(dev);
+
+	tosakbd->suspended = 1;
+
+	return 0;
+}
+
+static int tosakbd_resume(struct platform_device *dev)
+{
+	struct tosakbd *tosakbd = platform_get_drvdata(dev);
+
+	/* Upon resume, ignore the suspend key for a short while */
+	tosakbd->suspend_jiffies = jiffies;
+	tosakbd->suspended = 0;
+
+	return 0;
+}
+#else
+#define tosakbd_suspend		NULL
+#define tosakbd_resume		NULL
+#endif
+
+static int __init tosakbd_probe(struct platform_device *pdev) {
+
+	int i;
+	struct tosakbd *tosakbd;
+	struct input_dev *input_dev;
+
+	tosakbd = kzalloc(sizeof(struct tosakbd), GFP_KERNEL);
+	if (!tosakbd)
+		return -ENOMEM;
+
+	input_dev = input_allocate_device();
+	if (!input_dev) {
+		kfree(tosakbd);
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(pdev,tosakbd);
+
+	spin_lock_init(&tosakbd->lock);
+
+	/* Init Keyboard rescan timer */
+	init_timer(&tosakbd->timer);
+	tosakbd->timer.function = tosakbd_timer_callback;
+	tosakbd->timer.data = (unsigned long) tosakbd;
+
+	/* Init Headphone Timer */
+	init_timer(&tosakbd->hptimer);
+	tosakbd->hptimer.function = tosakbd_hp_timer;
+	tosakbd->hptimer.data = (unsigned long) tosakbd;
+
+	tosakbd->suspend_jiffies = jiffies;
+
+	tosakbd->input = input_dev;
+
+	input_dev->private = tosakbd;
+	input_dev->name = "Tosa Keyboard";
+	input_dev->phys = "tosakbd/input0";
+	input_dev->cdev.dev = &pdev->dev;
+
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->id.vendor = 0x0001;
+	input_dev->id.product = 0x0001;
+	input_dev->id.version = 0x0100;
+
+	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_PWR) | BIT(EV_SW);
+	input_dev->keycode = tosakbd->keycode;
+	input_dev->keycodesize = sizeof(unsigned char);
+	input_dev->keycodemax = ARRAY_SIZE(tosakbd_keycode);
+
+	memcpy(tosakbd->keycode, tosakbd_keycode, sizeof(tosakbd->keycode));
+	for (i = 0; i < ARRAY_SIZE(tosakbd_keycode); i++)
+		set_bit(tosakbd->keycode[i], input_dev->keybit);
+	clear_bit(0, input_dev->keybit);
+	set_bit(SW_HEADPHONE_INSERT, input_dev->swbit);
+
+	input_register_device(tosakbd->input);
+
+	/* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
+	for (i = 0; i < TOSA_KEY_SENSE_NUM; i++) {
+		pxa_gpio_mode( TOSA_GPIO_KEY_SENSE(i) | GPIO_IN);	
+		if (request_irq(TOSA_IRQ_GPIO_KEY_SENSE(i), tosakbd_interrupt,
+						IRQF_DISABLED | IRQF_TRIGGER_RISING, "tosakbd", tosakbd)) {
+			printk("tosakbd: Can't get IRQ: %d !\n", i);
+		}
+	}
+	
+	/* Set Strobe lines as outputs - set high */
+	for (i = 0; i < TOSA_KEY_STROBE_NUM; i++) {
+		pxa_gpio_mode( TOSA_GPIO_KEY_STROBE(i) | GPIO_OUT | GPIO_DFLT_HIGH);	
+	}
+
+	// Power&Rec Button
+	pxa_gpio_mode( TOSA_GPIO_ON_KEY | GPIO_IN);	
+	pxa_gpio_mode( TOSA_GPIO_RECORD_BTN | GPIO_IN);	
+	pxa_gpio_mode( TOSA_GPIO_SYNC | GPIO_IN);
+	pxa_gpio_mode( TOSA_GPIO_EAR_IN | GPIO_IN);
+
+	if (request_irq(TOSA_IRQ_GPIO_ON_KEY, tosakbd_interrupt, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "On key", tosakbd) ||
+	    request_irq(TOSA_IRQ_GPIO_RECORD_BTN, tosakbd_interrupt, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Record key", tosakbd) ||
+	    request_irq(TOSA_IRQ_GPIO_SYNC, tosakbd_interrupt, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Sync key", tosakbd) ||
+	    request_irq(TOSA_IRQ_GPIO_EAR_IN, tosakbd_hp_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "HP in", tosakbd)) {
+		printk("Could not allocate KEYBD IRQ!\n");
+	}
+
+	printk(KERN_INFO "input: Tosa Keyboard Registered\n");
+
+	return 0;
+}
+
+static int tosakbd_remove(struct platform_device *dev) {
+	
+	int i;
+	struct tosakbd *tosakbd = platform_get_drvdata(dev);
+	
+	for (i = 0; i < TOSA_KEY_SENSE_NUM; i++)
+		free_irq(TOSA_IRQ_GPIO_KEY_SENSE(i),tosakbd); 
+	
+	free_irq(TOSA_IRQ_GPIO_ON_KEY,tosakbd); 
+	free_irq(TOSA_IRQ_GPIO_RECORD_BTN,tosakbd); 
+	free_irq(TOSA_IRQ_GPIO_SYNC,tosakbd); 
+
+	del_timer_sync(&tosakbd->timer);
+
+	input_unregister_device(tosakbd->input);
+	
+	kfree(tosakbd);
+	
+	return 0;
+}
+
+static struct platform_driver tosakbd_driver = {
+	.probe		= tosakbd_probe,
+	.remove		= tosakbd_remove,
+	.suspend	= tosakbd_suspend,
+	.resume		= tosakbd_resume,
+	.driver		= {
+		.name	= "tosa-keyboard",
+	},
+};
+
+static int __devinit tosakbd_init(void)
+{
+	return platform_driver_register(&tosakbd_driver);
+}
+
+static void __exit tosakbd_exit(void)
+{
+ 	platform_driver_unregister(&tosakbd_driver);
+}
+
+module_init(tosakbd_init);
+module_exit(tosakbd_exit);
+
+MODULE_AUTHOR("Dirk Opfer <Dirk@Opfer-Online.de>");
+MODULE_DESCRIPTION("Tosa Keyboard Driver");
+MODULE_LICENSE("GPLv2");