Drop support for older kernel versions

SVN-Revision: 24915

1 files changed, 0 insertions, 400 deletions

diff --git a/target/linux/xburst/patches-2.6.35/052-rtc.patch b/target/linux/xburst/patches-2.6.35/052-rtc.patch
deleted file mode 100644
index f04c7bd..0000000
--- a/target/linux/xburst/patches-2.6.35/052-rtc.patch
+++ /dev/null
@@ -1,400 +0,0 @@
-From 21a0c050c7471b9d87e720a84f6733bbe8e19835 Mon Sep 17 00:00:00 2001
-From: Lars-Peter Clausen <lars@metafoo.de>
-Date: Sat, 19 Jun 2010 18:29:50 +0000
-Subject: [PATCH] RTC: Add JZ4740 RTC driver
-
-Add support for the RTC unit on JZ4740 SoCs.
-
-Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
-Cc: Alessandro Zummo <a.zummo@towertech.it>
-Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
-Cc: rtc-linux@googlegroups.com
-Acked-by: Wan ZongShun <mcuos.com@gmail.com>
-Cc: linux-mips@linux-mips.org
-Cc: linux-kernel@vger.kernel.org
-Cc: Alessandro Zummo <a.zummo@towertech.it>,
-Patchwork: https://patchwork.linux-mips.org/patch/1424/
-Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
----
- drivers/rtc/Kconfig      |   11 ++
- drivers/rtc/Makefile     |    1 +
- drivers/rtc/rtc-jz4740.c |  345 ++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 357 insertions(+), 0 deletions(-)
- create mode 100644 drivers/rtc/rtc-jz4740.c
-
---- a/drivers/rtc/Kconfig
-+++ b/drivers/rtc/Kconfig
-@@ -914,4 +914,15 @@ config RTC_DRV_MPC5121
- 	  This driver can also be built as a module. If so, the module
- 	  will be called rtc-mpc5121.
- 
-+config RTC_DRV_JZ4740
-+	tristate "Ingenic JZ4740 SoC"
-+	depends on RTC_CLASS
-+	depends on MACH_JZ4740
-+	help
-+	  If you say yes here you get support for the Ingenic JZ4740 SoC RTC
-+	  controller.
-+
-+	  This driver can also be buillt as a module. If so, the module
-+	  will be called rtc-jz4740.
-+
- endif # RTC_CLASS
---- a/drivers/rtc/Makefile
-+++ b/drivers/rtc/Makefile
-@@ -47,6 +47,7 @@ obj-$(CONFIG_RTC_DRV_EP93XX)	+= rtc-ep93
- obj-$(CONFIG_RTC_DRV_FM3130)	+= rtc-fm3130.o
- obj-$(CONFIG_RTC_DRV_GENERIC)	+= rtc-generic.o
- obj-$(CONFIG_RTC_DRV_ISL1208)	+= rtc-isl1208.o
-+obj-$(CONFIG_RTC_DRV_JZ4740)	+= rtc-jz4740.o
- obj-$(CONFIG_RTC_DRV_M41T80)	+= rtc-m41t80.o
- obj-$(CONFIG_RTC_DRV_M41T94)	+= rtc-m41t94.o
- obj-$(CONFIG_RTC_DRV_M48T35)	+= rtc-m48t35.o
---- /dev/null
-+++ b/drivers/rtc/rtc-jz4740.c
-@@ -0,0 +1,345 @@
-+/*
-+ *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
-+ *	 JZ4740 SoC RTC driver
-+ *
-+ *  This program is free software; you can redistribute it and/or modify it
-+ *  under  the terms of  the GNU General Public License as published by the
-+ *  Free Software Foundation;  either version 2 of the License, or (at your
-+ *  option) any later version.
-+ *
-+ *  You should have received a copy of the GNU General Public License along
-+ *  with this program; if not, write to the Free Software Foundation, Inc.,
-+ *  675 Mass Ave, Cambridge, MA 02139, USA.
-+ *
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/rtc.h>
-+#include <linux/slab.h>
-+#include <linux/spinlock.h>
-+
-+#define JZ_REG_RTC_CTRL		0x00
-+#define JZ_REG_RTC_SEC		0x04
-+#define JZ_REG_RTC_SEC_ALARM	0x08
-+#define JZ_REG_RTC_REGULATOR	0x0C
-+#define JZ_REG_RTC_HIBERNATE	0x20
-+#define JZ_REG_RTC_SCRATCHPAD	0x34
-+
-+#define JZ_RTC_CTRL_WRDY	BIT(7)
-+#define JZ_RTC_CTRL_1HZ		BIT(6)
-+#define JZ_RTC_CTRL_1HZ_IRQ	BIT(5)
-+#define JZ_RTC_CTRL_AF		BIT(4)
-+#define JZ_RTC_CTRL_AF_IRQ	BIT(3)
-+#define JZ_RTC_CTRL_AE		BIT(2)
-+#define JZ_RTC_CTRL_ENABLE	BIT(0)
-+
-+struct jz4740_rtc {
-+	struct resource *mem;
-+	void __iomem *base;
-+
-+	struct rtc_device *rtc;
-+
-+	unsigned int irq;
-+
-+	spinlock_t lock;
-+};
-+
-+static inline uint32_t jz4740_rtc_reg_read(struct jz4740_rtc *rtc, size_t reg)
-+{
-+	return readl(rtc->base + reg);
-+}
-+
-+static int jz4740_rtc_wait_write_ready(struct jz4740_rtc *rtc)
-+{
-+	uint32_t ctrl;
-+	int timeout = 1000;
-+
-+	do {
-+		ctrl = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL);
-+	} while (!(ctrl & JZ_RTC_CTRL_WRDY) && --timeout);
-+
-+	return timeout ? 0 : -EIO;
-+}
-+
-+static inline int jz4740_rtc_reg_write(struct jz4740_rtc *rtc, size_t reg,
-+	uint32_t val)
-+{
-+	int ret;
-+	ret = jz4740_rtc_wait_write_ready(rtc);
-+	if (ret == 0)
-+		writel(val, rtc->base + reg);
-+
-+	return ret;
-+}
-+
-+static int jz4740_rtc_ctrl_set_bits(struct jz4740_rtc *rtc, uint32_t mask,
-+	bool set)
-+{
-+	int ret;
-+	unsigned long flags;
-+	uint32_t ctrl;
-+
-+	spin_lock_irqsave(&rtc->lock, flags);
-+
-+	ctrl = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL);
-+
-+	/* Don't clear interrupt flags by accident */
-+	ctrl |= JZ_RTC_CTRL_1HZ | JZ_RTC_CTRL_AF;
-+
-+	if (set)
-+		ctrl |= mask;
-+	else
-+		ctrl &= ~mask;
-+
-+	ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_CTRL, ctrl);
-+
-+	spin_unlock_irqrestore(&rtc->lock, flags);
-+
-+	return ret;
-+}
-+
-+static int jz4740_rtc_read_time(struct device *dev, struct rtc_time *time)
-+{
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+	uint32_t secs, secs2;
-+	int timeout = 5;
-+
-+	/* If the seconds register is read while it is updated, it can contain a
-+	 * bogus value. This can be avoided by making sure that two consecutive
-+	 * reads have the same value.
-+	 */
-+	secs = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SEC);
-+	secs2 = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SEC);
-+
-+	while (secs != secs2 && --timeout) {
-+		secs = secs2;
-+		secs2 = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SEC);
-+	}
-+
-+	if (timeout == 0)
-+		return -EIO;
-+
-+	rtc_time_to_tm(secs, time);
-+
-+	return rtc_valid_tm(time);
-+}
-+
-+static int jz4740_rtc_set_mmss(struct device *dev, unsigned long secs)
-+{
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+
-+	return jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, secs);
-+}
-+
-+static int jz4740_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-+{
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+	uint32_t secs;
-+	uint32_t ctrl;
-+
-+	secs = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SEC_ALARM);
-+
-+	ctrl = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL);
-+
-+	alrm->enabled = !!(ctrl & JZ_RTC_CTRL_AE);
-+	alrm->pending = !!(ctrl & JZ_RTC_CTRL_AF);
-+
-+	rtc_time_to_tm(secs, &alrm->time);
-+
-+	return rtc_valid_tm(&alrm->time);
-+}
-+
-+static int jz4740_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-+{
-+	int ret;
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+	unsigned long secs;
-+
-+	rtc_tm_to_time(&alrm->time, &secs);
-+
-+	ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC_ALARM, secs);
-+	if (!ret)
-+		ret = jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_AE, alrm->enabled);
-+
-+	return ret;
-+}
-+
-+static int jz4740_rtc_update_irq_enable(struct device *dev, unsigned int enable)
-+{
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+	return jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_1HZ_IRQ, enable);
-+}
-+
-+static int jz4740_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
-+{
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+	return jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_AF_IRQ, enable);
-+}
-+
-+static struct rtc_class_ops jz4740_rtc_ops = {
-+	.read_time	= jz4740_rtc_read_time,
-+	.set_mmss	= jz4740_rtc_set_mmss,
-+	.read_alarm	= jz4740_rtc_read_alarm,
-+	.set_alarm	= jz4740_rtc_set_alarm,
-+	.update_irq_enable = jz4740_rtc_update_irq_enable,
-+	.alarm_irq_enable = jz4740_rtc_alarm_irq_enable,
-+};
-+
-+static irqreturn_t jz4740_rtc_irq(int irq, void *data)
-+{
-+	struct jz4740_rtc *rtc = data;
-+	uint32_t ctrl;
-+	unsigned long events = 0;
-+
-+	ctrl = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL);
-+
-+	if (ctrl & JZ_RTC_CTRL_1HZ)
-+		events |= (RTC_UF | RTC_IRQF);
-+
-+	if (ctrl & JZ_RTC_CTRL_AF)
-+		events |= (RTC_AF | RTC_IRQF);
-+
-+	rtc_update_irq(rtc->rtc, 1, events);
-+
-+	jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_1HZ | JZ_RTC_CTRL_AF, false);
-+
-+	return IRQ_HANDLED;
-+}
-+
-+void jz4740_rtc_poweroff(struct device *dev)
-+{
-+	struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-+	jz4740_rtc_reg_write(rtc, JZ_REG_RTC_HIBERNATE, 1);
-+}
-+EXPORT_SYMBOL_GPL(jz4740_rtc_poweroff);
-+
-+static int __devinit jz4740_rtc_probe(struct platform_device *pdev)
-+{
-+	int ret;
-+	struct jz4740_rtc *rtc;
-+	uint32_t scratchpad;
-+
-+	rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
-+	if (!rtc)
-+		return -ENOMEM;
-+
-+	rtc->irq = platform_get_irq(pdev, 0);
-+	if (rtc->irq < 0) {
-+		ret = -ENOENT;
-+		dev_err(&pdev->dev, "Failed to get platform irq\n");
-+		goto err_free;
-+	}
-+
-+	rtc->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	if (!rtc->mem) {
-+		ret = -ENOENT;
-+		dev_err(&pdev->dev, "Failed to get platform mmio memory\n");
-+		goto err_free;
-+	}
-+
-+	rtc->mem = request_mem_region(rtc->mem->start, resource_size(rtc->mem),
-+					pdev->name);
-+	if (!rtc->mem) {
-+		ret = -EBUSY;
-+		dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-+		goto err_free;
-+	}
-+
-+	rtc->base = ioremap_nocache(rtc->mem->start, resource_size(rtc->mem));
-+	if (!rtc->base) {
-+		ret = -EBUSY;
-+		dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-+		goto err_release_mem_region;
-+	}
-+
-+	spin_lock_init(&rtc->lock);
-+
-+	platform_set_drvdata(pdev, rtc);
-+
-+	rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, &jz4740_rtc_ops,
-+					THIS_MODULE);
-+	if (IS_ERR(rtc->rtc)) {
-+		ret = PTR_ERR(rtc->rtc);
-+		dev_err(&pdev->dev, "Failed to register rtc device: %d\n", ret);
-+		goto err_iounmap;
-+	}
-+
-+	ret = request_irq(rtc->irq, jz4740_rtc_irq, 0,
-+				pdev->name, rtc);
-+	if (ret) {
-+		dev_err(&pdev->dev, "Failed to request rtc irq: %d\n", ret);
-+		goto err_unregister_rtc;
-+	}
-+
-+	scratchpad = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SCRATCHPAD);
-+	if (scratchpad != 0x12345678) {
-+		ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SCRATCHPAD, 0x12345678);
-+		ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, 0);
-+		if (ret) {
-+			dev_err(&pdev->dev, "Could not write write to RTC registers\n");
-+			goto err_free_irq;
-+		}
-+	}
-+
-+	return 0;
-+
-+err_free_irq:
-+	free_irq(rtc->irq, rtc);
-+err_unregister_rtc:
-+	rtc_device_unregister(rtc->rtc);
-+err_iounmap:
-+	platform_set_drvdata(pdev, NULL);
-+	iounmap(rtc->base);
-+err_release_mem_region:
-+	release_mem_region(rtc->mem->start, resource_size(rtc->mem));
-+err_free:
-+	kfree(rtc);
-+
-+	return ret;
-+}
-+
-+static int __devexit jz4740_rtc_remove(struct platform_device *pdev)
-+{
-+	struct jz4740_rtc *rtc = platform_get_drvdata(pdev);
-+
-+	free_irq(rtc->irq, rtc);
-+
-+	rtc_device_unregister(rtc->rtc);
-+
-+	iounmap(rtc->base);
-+	release_mem_region(rtc->mem->start, resource_size(rtc->mem));
-+
-+	kfree(rtc);
-+
-+	platform_set_drvdata(pdev, NULL);
-+
-+	return 0;
-+}
-+
-+struct platform_driver jz4740_rtc_driver = {
-+	.probe = jz4740_rtc_probe,
-+	.remove = __devexit_p(jz4740_rtc_remove),
-+	.driver = {
-+		.name = "jz4740-rtc",
-+		.owner = THIS_MODULE,
-+	},
-+};
-+
-+static int __init jz4740_rtc_init(void)
-+{
-+	return platform_driver_register(&jz4740_rtc_driver);
-+}
-+module_init(jz4740_rtc_init);
-+
-+static void __exit jz4740_rtc_exit(void)
-+{
-+	platform_driver_unregister(&jz4740_rtc_driver);
-+}
-+module_exit(jz4740_rtc_exit);
-+
-+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("RTC driver for the JZ4740 SoC\n");
-+MODULE_ALIAS("platform:jz4740-rtc");