diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0123--ARM-goldfish-events-Add-event-driver-for-goldfis.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/0123--ARM-goldfish-events-Add-event-driver-for-goldfis.patch | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0123--ARM-goldfish-events-Add-event-driver-for-goldfis.patch b/target/linux/goldfish/patches-2.6.30/0123--ARM-goldfish-events-Add-event-driver-for-goldfis.patch new file mode 100644 index 000000000..fd9566e7a --- /dev/null +++ b/target/linux/goldfish/patches-2.6.30/0123--ARM-goldfish-events-Add-event-driver-for-goldfis.patch @@ -0,0 +1,234 @@ +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"); |