--- /dev/null
+From 226fd290dc2d052e5cd437cc8464e1424e7ebf2c Mon Sep 17 00:00:00 2001
+From: Brian Swetland <swetland@google.com>
+Date: Sun, 13 Aug 2006 21:50:14 +0700
+Subject: [PATCH 123/134] [ARM] goldfish: events: Add event driver for goldfish
+
+this device is a direct pipe from "hardware" to the input
+event subsystem, allowing us to avoid having to route
+"keypad" style events through an AT keyboard driver (gross!)
+
+Signed-off-by: Mike A. Chan <mikechan@google.com>
+---
+ drivers/input/keyboard/Kconfig | 5 +
+ drivers/input/keyboard/Makefile | 1 +
+ drivers/input/keyboard/goldfish_events.c | 190 ++++++++++++++++++++++++++++++
+ 3 files changed, 196 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/input/keyboard/goldfish_events.c
+
+--- a/drivers/input/keyboard/Kconfig
++++ b/drivers/input/keyboard/Kconfig
+@@ -304,6 +304,11 @@ config KEYBOARD_GPIO
+ To compile this driver as a module, choose M here: the
+ module will be called gpio-keys.
+
++config KEYBOARD_GOLDFISH_EVENTS
++ tristate "Generic Input Event device for Goldfish"
++ help
++ no help
++
+ config KEYBOARD_MAPLE
+ tristate "Maple bus keyboard"
+ depends on SH_DREAMCAST && MAPLE
+--- a/drivers/input/keyboard/Makefile
++++ b/drivers/input/keyboard/Makefile
+@@ -23,6 +23,7 @@ obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x
+ obj-$(CONFIG_KEYBOARD_PXA930_ROTARY) += pxa930_rotary.o
+ obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o
+ obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o
++obj-$(CONFIG_KEYBOARD_GOLDFISH_EVENTS) += goldfish_events.o
+ obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o
+ obj-$(CONFIG_KEYBOARD_HP7XX) += jornada720_kbd.o
+ obj-$(CONFIG_KEYBOARD_MAPLE) += maple_keyb.o
+--- /dev/null
++++ b/drivers/input/keyboard/goldfish_events.c
+@@ -0,0 +1,190 @@
++/* drivers/input/keyboard/goldfish-events.c
++**
++** Copyright (C) 2007 Google, Inc.
++**
++** This software is licensed under the terms of the GNU General Public
++** License version 2, as published by the Free Software Foundation, and
++** may be copied, distributed, and modified under those terms.
++**
++** 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.
++**
++*/
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/types.h>
++#include <linux/input.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++
++#include <mach/hardware.h>
++#include <asm/irq.h>
++#include <asm/io.h>
++
++enum {
++ REG_READ = 0x00,
++ REG_SET_PAGE = 0x00,
++ REG_LEN = 0x04,
++ REG_DATA = 0x08,
++
++ PAGE_NAME = 0x00000,
++ PAGE_EVBITS = 0x10000,
++ PAGE_ABSDATA = 0x20000 | EV_ABS,
++};
++
++struct event_dev {
++ struct input_dev *input;
++ int irq;
++ unsigned addr;
++ char name[0];
++};
++
++static irqreturn_t events_interrupt(int irq, void *dev_id)
++{
++ struct event_dev *edev = dev_id;
++ unsigned type, code, value;
++
++ type = __raw_readl(edev->addr + REG_READ);
++ code = __raw_readl(edev->addr + REG_READ);
++ value = __raw_readl(edev->addr + REG_READ);
++
++ input_event(edev->input, type, code, value);
++ return IRQ_HANDLED;
++}
++
++static void events_import_bits(struct event_dev *edev, unsigned long bits[], unsigned type, size_t count)
++{
++ int i, j;
++ size_t size;
++ uint8_t val;
++ unsigned addr = edev->addr;
++ __raw_writel(PAGE_EVBITS | type, addr + REG_SET_PAGE);
++ size = __raw_readl(addr + REG_LEN) * 8;
++ if (size < count)
++ count = size;
++ addr = addr + REG_DATA;
++ for (i = 0; i < count; i += 8) {
++ val = __raw_readb(addr++);
++ for (j = 0; j < 8; j++)
++ if(val & 1 << j)
++ set_bit(i + j, bits);
++ }
++}
++
++static int events_probe(struct platform_device *pdev)
++{
++ struct input_dev *input_dev;
++ struct event_dev *edev = NULL;
++ struct resource *res;
++ unsigned keymapnamelen;
++ int i;
++ int count;
++ int irq;
++ unsigned addr;
++ int ret;
++
++ printk("*** events probe ***\n");
++
++ input_dev = input_allocate_device();
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if(!input_dev || !res) goto fail;
++
++ addr = (unsigned) ioremap(res->start, 4096);
++ irq = platform_get_irq(pdev, 0);
++
++ printk("events_probe() addr=0x%08x irq=%d\n", addr, irq);
++
++ if(!addr) goto fail;
++ if(irq < 0) goto fail;
++
++ __raw_writel(PAGE_NAME, addr + REG_SET_PAGE);
++ keymapnamelen = __raw_readl(addr + REG_LEN);
++
++ edev = kzalloc(sizeof(struct event_dev) + keymapnamelen + 1, GFP_KERNEL);
++ if (!edev) goto fail;
++
++ edev->input = input_dev;
++ edev->addr = addr;
++ edev->irq = irq;
++
++ for (i = 0; i < keymapnamelen; i++) {
++ edev->name[i] = __raw_readb(edev->addr + REG_DATA + i);
++ }
++ printk("events_probe() keymap=%s\n", edev->name);
++
++ events_import_bits(edev, input_dev->evbit, EV_SYN, EV_MAX);
++ events_import_bits(edev, input_dev->keybit, EV_KEY, KEY_MAX);
++ events_import_bits(edev, input_dev->relbit, EV_REL, REL_MAX);
++ events_import_bits(edev, input_dev->absbit, EV_ABS, ABS_MAX);
++ events_import_bits(edev, input_dev->mscbit, EV_MSC, MSC_MAX);
++ events_import_bits(edev, input_dev->ledbit, EV_LED, LED_MAX);
++ events_import_bits(edev, input_dev->sndbit, EV_SND, SND_MAX);
++ events_import_bits(edev, input_dev->ffbit, EV_FF, FF_MAX);
++ events_import_bits(edev, input_dev->swbit, EV_SW, SW_MAX);
++
++ __raw_writel(PAGE_ABSDATA, addr + REG_SET_PAGE);
++ count = __raw_readl(addr + REG_LEN) / (4 * 4);
++ if (count > ABS_MAX)
++ count = ABS_MAX;
++ for(i = 0; i < count; i++) {
++ int val[4];
++ int j;
++ if (!test_bit(i, input_dev->absbit))
++ continue;
++ for(j = 0; j < ARRAY_SIZE(val); j++)
++ val[j] = __raw_readl(edev->addr + REG_DATA + (i * ARRAY_SIZE(val) + j) * 4);
++ input_set_abs_params(input_dev, i, val[0], val[1], val[2], val[3]);
++ }
++
++ platform_set_drvdata(pdev, edev);
++
++ input_dev->name = edev->name;
++ input_set_drvdata(input_dev, edev);
++
++ ret = input_register_device(input_dev);
++ if (ret)
++ goto fail;
++
++ if(request_irq(edev->irq, events_interrupt, 0,
++ "goldfish-events-keypad", edev) < 0) {
++ input_unregister_device(input_dev);
++ kfree(edev);
++ return -EINVAL;
++ }
++
++ return 0;
++
++fail:
++ kfree(edev);
++ input_free_device(input_dev);
++
++ return -EINVAL;
++}
++
++static struct platform_driver events_driver = {
++ .probe = events_probe,
++ .driver = {
++ .name = "goldfish_events",
++ },
++};
++
++static int __devinit events_init(void)
++{
++ return platform_driver_register(&events_driver);
++}
++
++
++static void __exit events_exit(void)
++{
++}
++
++module_init(events_init);
++module_exit(events_exit);
++
++MODULE_AUTHOR("Brian Swetland");
++MODULE_DESCRIPTION("Goldfish Event Device");
++MODULE_LICENSE("GPL");
projects / openwrt / svn-archive / archive.git / blobdiff