mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-24 20:48:14 +02:00
2d581e6047
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16459 3c298f89-4303-0410-b956-a3cf2f4a3e73
235 lines
6.8 KiB
Diff
235 lines
6.8 KiB
Diff
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");
|