From patchwork Thu Mar 17 13:25:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 599017 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3qQq0217B2z9sD6 for ; Fri, 18 Mar 2016 00:27:14 +1100 (AEDT) Received: from localhost ([::1]:34874 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agXxI-0005kw-0O for incoming@patchwork.ozlabs.org; Thu, 17 Mar 2016 09:27:12 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46486) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agXwh-0004fK-Un for qemu-devel@nongnu.org; Thu, 17 Mar 2016 09:26:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1agXwg-0000H6-Lk for qemu-devel@nongnu.org; Thu, 17 Mar 2016 09:26:35 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:8646) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agXwX-0000AS-Nk; Thu, 17 Mar 2016 09:26:26 -0400 Received: from 172.24.1.49 (EHLO szxeml428-hub.china.huawei.com) ([172.24.1.49]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DDR74278; Thu, 17 Mar 2016 21:26:06 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml428-hub.china.huawei.com (10.82.67.183) with Microsoft SMTP Server id 14.3.235.1; Thu, 17 Mar 2016 21:25:55 +0800 From: Shannon Zhao To: , , Date: Thu, 17 Mar 2016 21:25:39 +0800 Message-ID: <1458221140-15232-2-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1458221140-15232-1-git-send-email-zhaoshenglong@huawei.com> References: <1458221140-15232-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.56EAB06E.0209, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 38bd23b0a45ff1b67603fcd50e665a87 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 119.145.14.65 Cc: peter.huangpeng@huawei.com, zhaoshenglong@huawei.com, qemu-devel@nongnu.org, shannon.zhao@linaro.org Subject: [Qemu-devel] [PATCH 1/2] hw/gpio: Add the emulation of gpio_key X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Shannon Zhao This will be used by ARM virt machine as a power button. Signed-off-by: Shannon Zhao --- default-configs/arm-softmmu.mak | 1 + hw/gpio/Makefile.objs | 1 + hw/gpio/gpio_key.c | 100 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+) create mode 100644 hw/gpio/gpio_key.c diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak index 2bcd236..c63cdd0 100644 --- a/default-configs/arm-softmmu.mak +++ b/default-configs/arm-softmmu.mak @@ -111,3 +111,4 @@ CONFIG_I82801B11=y CONFIG_ACPI=y CONFIG_SMBIOS=y CONFIG_ASPEED_SOC=y +CONFIG_GPIO_KEY=y diff --git a/hw/gpio/Makefile.objs b/hw/gpio/Makefile.objs index 52233f7..a43c7cf 100644 --- a/hw/gpio/Makefile.objs +++ b/hw/gpio/Makefile.objs @@ -3,6 +3,7 @@ common-obj-$(CONFIG_PL061) += pl061.o common-obj-$(CONFIG_PUV3) += puv3_gpio.o common-obj-$(CONFIG_ZAURUS) += zaurus.o common-obj-$(CONFIG_E500) += mpc8xxx.o +common-obj-$(CONFIG_GPIO_KEY) += gpio_key.o obj-$(CONFIG_OMAP) += omap_gpio.o obj-$(CONFIG_IMX) += imx_gpio.o diff --git a/hw/gpio/gpio_key.c b/hw/gpio/gpio_key.c new file mode 100644 index 0000000..41639fa --- /dev/null +++ b/hw/gpio/gpio_key.c @@ -0,0 +1,100 @@ +/* + * GPIO key + * + * Copyright (c) 2016 Linaro Limited + * + * Author: Shannon Zhao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License; either version 2 + * of the License, or (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" + +#define TYPE_GPIOKEY "gpio_key" +#define GPIOKEY(obj) OBJECT_CHECK(GPIOKEYState, (obj), TYPE_GPIOKEY) +#define GPIO_KEY_LATENCY 100 /* 100ms */ + +typedef struct GPIOKEYState { + SysBusDevice parent_obj; + + QEMUTimer *timer; + qemu_irq irq; +} GPIOKEYState; + +static const VMStateDescription vmstate_gpio_key = { + .name = "gpio_key", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_TIMER_PTR(timer, GPIOKEYState), + VMSTATE_END_OF_LIST() + } +}; + +static void gpio_key_reset(DeviceState *dev) +{ + GPIOKEYState *s = GPIOKEY(dev); + + timer_del(s->timer); +} + +static void gpio_key_timer_expired(void *opaque) +{ + GPIOKEYState *s = (GPIOKEYState *)opaque; + + qemu_set_irq(s->irq, 0); + timer_del(s->timer); +} + +static void gpio_key_set_irq(void *opaque, int irq, int level) +{ + GPIOKEYState *s = (GPIOKEYState *)opaque; + + qemu_set_irq(s->irq, 1); + timer_mod(s->timer, + qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + GPIO_KEY_LATENCY); +} + +static void gpio_key_realize(DeviceState *dev, Error **errp) +{ + GPIOKEYState *s = GPIOKEY(dev); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + + sysbus_init_irq(sbd, &s->irq); + qdev_init_gpio_in(dev, gpio_key_set_irq, 1); + s->timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, gpio_key_timer_expired, s); +} + +static void gpio_key_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = gpio_key_realize; + dc->vmsd = &vmstate_gpio_key; + dc->reset = &gpio_key_reset; +} + +static const TypeInfo gpio_key_info = { + .name = TYPE_GPIOKEY, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(GPIOKEYState), + .class_init = gpio_key_class_init, +}; + +static void gpio_key_register_types(void) +{ + type_register_static(&gpio_key_info); +} + +type_init(gpio_key_register_types)