Index: linux-2.6.21/arch/arm/mach-pxa/generic.c =================================================================== --- linux-2.6.21.orig/arch/arm/mach-pxa/generic.c 2007-04-30 19:19:58.000000000 -0300 +++ linux-2.6.21/arch/arm/mach-pxa/generic.c 2007-04-30 19:45:20.000000000 -0300 @@ -42,6 +42,7 @@ #include #include #include +#include #include "generic.h" @@ -430,6 +431,30 @@ .id = -1, }; +static struct resource pxa_kbd_resources[] = { + { + .start = IRQ_KEYPAD, + .end = IRQ_KEYPAD, + .flags = IORESOURCE_IRQ, + }, { + .start = 0x41500000, + .end = 0x4150004c, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device kbd_device = { + .name = "pxa-keyboard", + .id = -1, + .resource = pxa_kbd_resources, + .num_resources = ARRAY_SIZE(pxa_kbd_resources), +}; + +void __init pxa_set_kbd_info(struct pxakbd_platform_data *info) +{ + kbd_device.dev.platform_data = info; +} + static struct platform_device *devices[] __initdata = { &pxamci_device, &udc_device, @@ -444,6 +469,7 @@ #endif &i2s_device, &pxartc_device, + &kbd_device, }; static int __init pxa_init(void) Index: linux-2.6.21/drivers/input/keyboard/Kconfig =================================================================== --- linux-2.6.21.orig/drivers/input/keyboard/Kconfig 2007-04-30 19:15:26.000000000 -0300 +++ linux-2.6.21/drivers/input/keyboard/Kconfig 2007-04-30 19:43:53.000000000 -0300 @@ -229,4 +229,11 @@ To compile this driver as a module, choose M here: the module will be called gpio-keys. +config KEYBOARD_PXA + tristate "Intel PXA keyboard support" + depends on ARCH_PXA + help + This add support for a driver of the Intel PXA2xx keyboard + controller. + endif Index: linux-2.6.21/drivers/input/keyboard/Makefile =================================================================== --- linux-2.6.21.orig/drivers/input/keyboard/Makefile 2007-04-30 19:17:25.000000000 -0300 +++ linux-2.6.21/drivers/input/keyboard/Makefile 2007-04-30 19:46:54.000000000 -0300 @@ -19,4 +19,4 @@ obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o - +obj-$(CONFIG_KEYBOARD_PXA) += pxakbd.o Index: linux-2.6.21/include/asm-arm/arch-pxa/kbd.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.21/include/asm-arm/arch-pxa/kbd.h 2007-04-30 19:27:58.000000000 -0300 @@ -0,0 +1,28 @@ +/* + * kbd_pxa.h + * + * Copyright (C) 2006 Harald Welte + * + * 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. + * + */ +#ifndef _KBD_PXA_H_ +#define _KBD_PXA_H_ + +struct pxakbd_platform_data { + int (*init)(void); /* init gpio, etc. */ + unsigned int scan_interval; + struct { + unsigned int rows; + unsigned int cols; + unsigned char *keycode; + } matrix; + struct { + unsigned int num; + unsigned char *keycode; + } direct; +}; + +#endif Index: linux-2.6.21/drivers/input/keyboard/pxakbd.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.21/drivers/input/keyboard/pxakbd.c 2007-04-30 19:48:13.000000000 -0300 @@ -0,0 +1,332 @@ +/* + * Driver for Motorola EZX phone "keyboard" + * + * (C) 2006 by Harald Welte + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include + +#if 1 +#define DEBUGP(x, args ...) printk(x, ## args) +#else +#define DEBUGP(x, args ...) +#endif + +/* per-keyboard private data structure */ +struct pxakbd { + struct input_dev *input; + struct timer_list timer; + spinlock_t lock; + + struct resource *res; + unsigned int irq; + + struct pxakbd_platform_data *pd; +}; + +static int pxakbd_scan_direct(struct pxakbd *pxakbd) +{ + u_int32_t kpdk; + unsigned int i; + int num_pressed = 0; + + kpdk = KPDK & 0x000000ff; + for (i = 0; i < pxakbd->pd->direct.num; i++) { + int pressed = 0; + + if (kpdk & (1 << i)) { + pressed = 1; + num_pressed++; + DEBUGP("pxakbd: pressed: direct %u\n", i); + } + if (pxakbd->pd->direct.keycode[i] != KEY_RESERVED) { + DEBUGP( "pxakbd: sending to input layer: keycode = %d, pressed = %d\n", pxakbd->pd->direct.keycode[i], pressed ); + input_report_key(pxakbd->input, pxakbd->pd->direct.keycode[i], + pressed); + } + } + return num_pressed; +} + +/* read the full 8x8 matrix from the PXA27x keypad controller */ +static void __read_matrix(u_int8_t *matrix) +{ + u_int32_t tmp; + + tmp = KPASMKP0; + matrix[0] = tmp & 0x000000ff; + matrix[1] = (tmp & 0x00ff0000) >> 16; + + tmp = KPASMKP1; + matrix[2] = tmp & 0x000000ff; + matrix[3] = (tmp & 0x00ff0000) >> 16; + + tmp = KPASMKP2; + matrix[4] = tmp & 0x000000ff; + matrix[5] = (tmp & 0x00ff0000) >> 16; + + tmp = KPASMKP3; + matrix[6] = tmp & 0x000000ff; + matrix[7] = (tmp & 0x00ff0000) >> 16; +} + +/* compare current matrix with last, generate 'diff' events */ +static int __cmp_matrix_gen_events(struct pxakbd *pxakbd, u_int8_t *matrix) +{ + unsigned int i; + int num_pressed = 0; + + /* iterate over the matrix */ + for (i = 0; i < pxakbd->pd->matrix.rows; i++) { + unsigned int j; + for (j = 0; j < pxakbd->pd->matrix.cols; j++) { + u_int32_t scancode = + (i * pxakbd->pd->matrix.cols) + j; + int pressed = matrix[i] & (1 << j); + + if (pressed) { + DEBUGP("pxakbd: pressed: %u/%u\n", i, j); + num_pressed++; + } + + input_report_key(pxakbd->input, + pxakbd->pd->matrix.keycode[scancode], pressed); + } + } + + return num_pressed; +} + +/* scan the matrix keypad */ +static int pxakbd_scan_matrix(struct pxakbd *pxakbd) +{ + int num_pressed; + u_int32_t kpas; + u_int8_t matrix[8]; + + kpas = KPAS; + + if ((kpas & KPAS_MUKP) == KPAS_MUKP_NONE) { + /* no keys pressed */ + memset(matrix, 0, sizeof(matrix)); + } else if ((kpas & KPAS_MUKP) == KPAS_MUKP_ONE) { + /* one key pressed */ + u_int8_t row = (kpas & KPAS_RP) >> 4; + u_int8_t col = kpas & KPAS_CP; + + if (row == 0x0f || col == 0x0f) { + printk(KERN_WARNING "pxakbd: col or row invalid!\n"); + return -1; + } + + /* clear the matrix and set the single pressed key */ + memset(matrix, 0, sizeof(matrix)); + matrix[row] |= (1 << col); + } else { + /* multiple keys pressed */ + __read_matrix(matrix); + } + + num_pressed = __cmp_matrix_gen_events(pxakbd, matrix); + + return num_pressed; +} + +static void pxakbd_timer_callback(unsigned long data) +{ + unsigned long flags; + struct pxakbd *pxakbd = (struct pxakbd *) data; + unsigned int num_pressed; + + spin_lock_irqsave(&pxakbd->lock, flags); + + num_pressed = pxakbd_scan_direct(pxakbd); + num_pressed += pxakbd_scan_matrix(pxakbd); + + spin_unlock_irqrestore(&pxakbd->lock, flags); + + /* propagate events up the input stack */ + input_sync(pxakbd->input); +} + +static irqreturn_t pxakbd_interrupt(int irq, void *dummy) +{ + struct pxakbd *pxakbd = dummy; + u_int32_t kpc; + int handled = 0; + int num_pressed = 0; + + /* read and clear interrupt */ + kpc = KPC; + + if (kpc & KPC_DI) { + num_pressed += pxakbd_scan_direct(pxakbd); + handled = 1; + } + + if (kpc & KPC_MI) { + while (KPAS & KPAS_SO) { + /* wait for scan to complete beforereading scan regs */ + cpu_relax(); + } + num_pressed += pxakbd_scan_matrix(pxakbd); + handled = 1; + } + + /* If any keys are currently pressed, we need to start the timer to detect + * key release. */ + if (num_pressed) + mod_timer(&pxakbd->timer, jiffies + pxakbd->pd->scan_interval); + + /* propagate events up the input stack */ + input_sync(pxakbd->input); + + return IRQ_RETVAL(handled); +} + +static int __init pxakbd_probe(struct platform_device *pdev) +{ + struct pxakbd *pxakbd; + struct input_dev *input_dev; + struct resource *r; + int i; + int ret = -ENOMEM; + + pxakbd = kzalloc(sizeof(*pxakbd), GFP_KERNEL); + if (!pxakbd) + goto out; + + input_dev = input_allocate_device(); + if (!input_dev) + goto out_pxa; + + pxakbd->irq = platform_get_irq(pdev, 0); + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r || pxakbd->irq == NO_IRQ) { + printk(KERN_ERR "pxakbd: invalid resources\n"); + ret = -EBUSY; + goto out_idev; + } + + pxakbd->input = input_dev; + init_timer(&pxakbd->timer); + pxakbd->timer.function = pxakbd_timer_callback; + pxakbd->timer.data = (unsigned long) pxakbd; + pxakbd->pd = pdev->dev.platform_data; + pxakbd->res = r; + + input_dev->name = "PXA Keyboard"; + input_dev->phys = "pxakbd/input0"; + input_dev->id.bustype = BUS_HOST; + input_dev->id.vendor = 0x0001; + input_dev->id.product = 0x0001; + input_dev->id.version = 0x0001; + input_dev->cdev.dev = &pdev->dev; + input_dev->private = pxakbd; + + input_dev->evbit[0] = BIT(EV_KEY)|BIT(EV_REP); + input_dev->keycode = pxakbd->pd->matrix.keycode; + input_dev->keycodesize = sizeof(unsigned char); + input_dev->keycodemax = pxakbd->pd->matrix.rows + *pxakbd->pd->matrix.cols; + + for (i = 0; i < input_dev->keycodemax; i++) + set_bit(pxakbd->pd->matrix.keycode[i], input_dev->keybit); + clear_bit(0, input_dev->keybit); + + if (request_irq(pxakbd->irq, pxakbd_interrupt, 0, "pxakbd", pxakbd)) { + printk(KERN_ERR "pxakbd: can't request irq %d\n", pxakbd->irq); + ret = -EBUSY; + goto out_idev; + } + + r = request_mem_region(r->start, 0x4c, "pxakbd"); + if (!r) { + printk(KERN_ERR "pxakbd: can't request memregion\n"); + ret = -EBUSY; + goto out_irq; + } + + /* set up gpio */ + pxakbd->pd->init(); + + /* set keypad control register */ + KPC = (KPC_ASACT | /* automatic scan on activity */ + KPC_ME | KPC_DE | /* matrix and direct keypad enabled */ + ((pxakbd->pd->matrix.cols-1)<<23) | /* columns */ + ((pxakbd->pd->matrix.rows-1)<<26) | /* rows */ + ((pxakbd->pd->direct.num-1)<<6) | /* direct keys */ + KPC_MS_ALL); /* scan all columns */ + + pxa_set_cken(CKEN19_KEYPAD, 1); + + KPC |= (KPC_DIE | KPC_MIE); /* enable matrix and direct keyboard */ + + KPKDI = 0x40; /* matrix key debounce interval: 0x40 */ + + platform_set_drvdata(pdev, pxakbd); + + return input_register_device(pxakbd->input); + +out_drvdata: + platform_set_drvdata(pdev, NULL); +out_mem: + release_resource(r); +out_irq: + free_irq(pxakbd->irq, pxakbd); +out_idev: + input_free_device(input_dev); +out_pxa: + kfree(pxakbd); +out: + return ret; +} + +static int pxakbd_remove(struct platform_device *pdev) +{ + struct pxakbd *pxakbd = platform_get_drvdata(pdev); + input_unregister_device(pxakbd->input); + platform_set_drvdata(pdev, NULL); + release_resource(pxakbd->res); + free_irq(pxakbd->irq, pxakbd); + kfree(pxakbd); + return 0; +} + +static struct platform_driver pxakbd_driver = { + .probe = &pxakbd_probe, + .remove = &pxakbd_remove, + .driver = { + .name = "pxa-keyboard", + }, +}; + +static int __devinit pxakbd_init(void) +{ + return platform_driver_register(&pxakbd_driver); +} + +static void __exit pxakbd_exit(void) +{ + platform_driver_unregister(&pxakbd_driver); +} + +module_init(pxakbd_init); +module_exit(pxakbd_exit); + +MODULE_AUTHOR("Harald Welte "); +MODULE_DESCRIPTION("Driver for Intel PXA27x keypad controller"); +MODULE_LICENSE("GPL"); Index: linux-2.6.21/include/asm-arm/arch-pxa/pxa-regs.h =================================================================== --- linux-2.6.21.orig/include/asm-arm/arch-pxa/pxa-regs.h 2007-04-30 19:39:30.000000000 -0300 +++ linux-2.6.21/include/asm-arm/arch-pxa/pxa-regs.h 2007-04-30 19:42:34.000000000 -0300 @@ -2165,6 +2165,11 @@ #define KPMK_MKP (0x1 << 31) #define KPAS_SO (0x1 << 31) #define KPASMKPx_SO (0x1 << 31) +#define KPAS_RP (0x000000f0) +#define KPAS_CP (0x0000000f) +#define KPAS_MUKP (0x7c000000) +#define KPAS_MUKP_ONE (0x04000000) +#define KPAS_MUKP_NONE (0x00000000) /* * UHC: USB Host Controller (OHCI-like) register definitions