diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0127--ARM-goldfish-RTC-Add-RTC-driver-for-goldfish.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/0127--ARM-goldfish-RTC-Add-RTC-driver-for-goldfish.patch | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0127--ARM-goldfish-RTC-Add-RTC-driver-for-goldfish.patch b/target/linux/goldfish/patches-2.6.30/0127--ARM-goldfish-RTC-Add-RTC-driver-for-goldfish.patch new file mode 100644 index 0000000..bb0c29d --- /dev/null +++ b/target/linux/goldfish/patches-2.6.30/0127--ARM-goldfish-RTC-Add-RTC-driver-for-goldfish.patch @@ -0,0 +1,186 @@ +From fce981438497199217ed19f14c4d0f1a1aa309f3 Mon Sep 17 00:00:00 2001 +From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@google.com> +Date: Fri, 29 Jun 2007 21:46:31 -0700 +Subject: [PATCH 127/134] [ARM] goldfish: RTC: Add RTC driver for goldfish. +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf-8 +Content-Transfer-Encoding: 8bit + +Gets the current time from the host. +Alarms are not supported yet. + +Signed-off-by: Mike A. Chan <mikechan@google.com> +Signed-off-by: Arve Hjønnevåg <arve@android.com> +--- + drivers/rtc/Kconfig | 6 ++ + drivers/rtc/Makefile | 1 + + drivers/rtc/rtc-goldfish.c | 138 ++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 145 insertions(+), 0 deletions(-) + create mode 100644 drivers/rtc/rtc-goldfish.c + +--- a/drivers/rtc/Kconfig ++++ b/drivers/rtc/Kconfig +@@ -691,6 +691,12 @@ config RTC_DRV_BFIN + This driver can also be built as a module. If so, the module + will be called rtc-bfin. + ++config RTC_DRV_GOLDFISH ++ tristate "GOLDFISH" ++ depends on ARCH_GOLDFISH ++ help ++ RTC driver for Goldfish Virtual Platform ++ + config RTC_DRV_RS5C313 + tristate "Ricoh RS5C313" + depends on SH_LANDISK +--- a/drivers/rtc/Makefile ++++ b/drivers/rtc/Makefile +@@ -39,6 +39,7 @@ obj-$(CONFIG_RTC_DRV_DS3234) += rtc-ds32 + obj-$(CONFIG_RTC_DRV_EFI) += rtc-efi.o + obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o + obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o ++obj-$(CONFIG_RTC_DRV_GOLDFISH) += rtc-goldfish.o + obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o + obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o + obj-$(CONFIG_RTC_DRV_M41T94) += rtc-m41t94.o +--- /dev/null ++++ b/drivers/rtc/rtc-goldfish.c +@@ -0,0 +1,138 @@ ++/* drivers/rtc/rtc-goldfish.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/interrupt.h> ++#include <linux/irq.h> ++#include <linux/platform_device.h> ++#include <linux/rtc.h> ++ ++#include <mach/timer.h> ++#include <mach/hardware.h> ++#include <asm/io.h> ++ ++struct goldfish_rtc { ++ uint32_t base; ++ uint32_t irq; ++ struct rtc_device *rtc; ++}; ++ ++static irqreturn_t ++goldfish_rtc_interrupt(int irq, void *dev_id) ++{ ++ struct goldfish_rtc *qrtc = dev_id; ++ unsigned long events = 0; ++ ++ writel(1, qrtc->base + TIMER_CLEAR_INTERRUPT); ++ events = RTC_IRQF | RTC_AF; ++ ++ rtc_update_irq(qrtc->rtc, 1, events); ++ ++ return IRQ_HANDLED; ++} ++ ++static int goldfish_rtc_read_time(struct device *dev, struct rtc_time *tm) ++{ ++ int64_t time; ++ struct goldfish_rtc *qrtc = platform_get_drvdata(to_platform_device(dev)); ++ ++ time = readl(qrtc->base + TIMER_TIME_LOW); ++ time |= (int64_t)readl(qrtc->base + TIMER_TIME_HIGH) << 32; ++ do_div(time, NSEC_PER_SEC); ++ ++ rtc_time_to_tm(time, tm); ++ return 0; ++} ++ ++static struct rtc_class_ops goldfish_rtc_ops = { ++// .ioctl = goldfish_rtc_ioctl, ++ .read_time = goldfish_rtc_read_time, ++// .set_time = goldfish_rtc_set_time, ++// .read_alarm = goldfish_rtc_read_alarm, ++// .set_alarm = goldfish_rtc_set_alarm, ++}; ++ ++ ++static int goldfish_rtc_probe(struct platform_device *pdev) ++{ ++ int ret; ++ struct resource *r; ++ struct goldfish_rtc *qrtc; ++ ++ qrtc = kzalloc(sizeof(*qrtc), GFP_KERNEL); ++ if(qrtc == NULL) { ++ ret = -ENOMEM; ++ goto err_qrtc_alloc_failed; ++ } ++ platform_set_drvdata(pdev, qrtc); ++ ++ r = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ if(r == NULL) { ++ ret = -ENODEV; ++ goto err_no_io_base; ++ } ++ qrtc->base = IO_ADDRESS(r->start - IO_START); ++ qrtc->irq = platform_get_irq(pdev, 0); ++ if(qrtc->irq < 0) { ++ ret = -ENODEV; ++ goto err_no_irq; ++ } ++ qrtc->rtc = rtc_device_register(pdev->name, &pdev->dev, ++ &goldfish_rtc_ops, THIS_MODULE); ++ if (IS_ERR(qrtc->rtc)) { ++ ret = PTR_ERR(qrtc->rtc); ++ goto err_rtc_device_register_failed; ++ } ++ ++ ret = request_irq(qrtc->irq, goldfish_rtc_interrupt, 0, pdev->name, qrtc); ++ if(ret) ++ goto request_irq; ++ ++ return 0; ++ ++ free_irq(qrtc->irq, qrtc); ++request_irq: ++ rtc_device_unregister(qrtc->rtc); ++err_rtc_device_register_failed: ++err_no_irq: ++err_no_io_base: ++ kfree(qrtc); ++err_qrtc_alloc_failed: ++ return ret; ++} ++ ++static int goldfish_rtc_remove(struct platform_device *pdev) ++{ ++ struct goldfish_rtc *qrtc = platform_get_drvdata(pdev); ++ free_irq(qrtc->irq, qrtc); ++ rtc_device_unregister(qrtc->rtc); ++ kfree(qrtc); ++ return 0; ++} ++ ++static struct platform_driver goldfish_timer = { ++ .probe = goldfish_rtc_probe, ++ .remove = goldfish_rtc_remove, ++ .driver = { ++ .name = "goldfish_rtc" ++ } ++}; ++ ++static int __init goldfish_rtc_init(void) ++{ ++ return platform_driver_register(&goldfish_timer); ++} ++ ++module_init(goldfish_rtc_init); ++ |