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Diffstat (limited to 'recipes/linux/linux-gumstix-2.6.15/rmk-2022-2-rtctime-sa110-pxa255-driver.patch')
-rw-r--r--recipes/linux/linux-gumstix-2.6.15/rmk-2022-2-rtctime-sa110-pxa255-driver.patch329
1 files changed, 0 insertions, 329 deletions
diff --git a/recipes/linux/linux-gumstix-2.6.15/rmk-2022-2-rtctime-sa110-pxa255-driver.patch b/recipes/linux/linux-gumstix-2.6.15/rmk-2022-2-rtctime-sa110-pxa255-driver.patch
deleted file mode 100644
index 87f4ebdc38..0000000000
--- a/recipes/linux/linux-gumstix-2.6.15/rmk-2022-2-rtctime-sa110-pxa255-driver.patch
+++ /dev/null
@@ -1,329 +0,0 @@
-Index: linux-2.6.15gum/drivers/char/sa1100-rtc.c
-===================================================================
---- /dev/null
-+++ linux-2.6.15gum/drivers/char/sa1100-rtc.c
-@@ -0,0 +1,297 @@
-+/*
-+ * Real Time Clock interface for Linux on StrongARM SA1100
-+ *
-+ * Copyright (c) 2000 Nils Faerber
-+ *
-+ * Based on rtc.c by Paul Gortmaker
-+ * Date/time conversion routines taken from arch/arm/kernel/time.c
-+ * by Linus Torvalds and Russel King
-+ * and the GNU C Library
-+ * ( ... I love the GPL ... just take what you need! ;)
-+ *
-+ * 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.
-+ *
-+ * 1.00 2001-06-08 Nicolas Pitre <nico@cam.org>
-+ * - added periodic timer capability using OSMR1
-+ * - flag compatibility with other RTC chips
-+ * - permission checks for ioctls
-+ * - major cleanup, partial rewrite
-+ *
-+ * 0.03 2001-03-07 CIH <cih@coventive.com>
-+ * - Modify the bug setups RTC clock.
-+ *
-+ * 0.02 2001-02-27 Nils Faerber <nils@@kernelconcepts.de>
-+ * - removed mktime(), added alarm irq clear
-+ *
-+ * 0.01 2000-10-01 Nils Faerber <nils@@kernelconcepts.de>
-+ * - initial release
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/fs.h>
-+#include <linux/miscdevice.h>
-+#include <linux/string.h>
-+#include <linux/init.h>
-+#include <linux/poll.h>
-+#include <linux/proc_fs.h>
-+#include <linux/interrupt.h>
-+#include <linux/rtc.h>
-+
-+#ifdef CONFIG_ARCH_PXA
-+#include <asm/arch/pxa-regs.h>
-+#endif
-+
-+#include <asm/bitops.h>
-+#include <asm/hardware.h>
-+#include <asm/irq.h>
-+#include <asm/rtc.h>
-+
-+#define TIMER_FREQ 3686400
-+
-+#define RTC_DEF_DIVIDER 32768 - 1
-+#define RTC_DEF_TRIM 0
-+
-+/* Those are the bits from a classic RTC we want to mimic */
-+#define RTC_IRQF 0x80 /* any of the following 3 is active */
-+#define RTC_PF 0x40
-+#define RTC_AF 0x20
-+#define RTC_UF 0x10
-+
-+static unsigned long rtc_freq = 1024;
-+static struct rtc_time rtc_alarm = {
-+ .tm_year = 0,
-+ .tm_mon = 0,
-+ .tm_mday = 0,
-+ .tm_hour = 0,
-+ .tm_mon = 0,
-+ .tm_sec = 0,
-+};
-+
-+extern spinlock_t rtc_lock;
-+
-+static int rtc_update_alarm(struct rtc_time *alrm)
-+{
-+ struct rtc_time alarm_tm, now_tm;
-+ unsigned long now, time;
-+ int ret;
-+
-+ printk("Updating alarm\n");
-+ do {
-+ now = RCNR;
-+ rtc_time_to_tm(now, &now_tm);
-+ rtc_next_alarm_time(&alarm_tm, &now_tm, alrm);
-+ ret = rtc_tm_to_time(&alarm_tm, &time);
-+ if (ret != 0)
-+ break;
-+
-+ RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL);
-+ RTAR = time;
-+ } while (now != RCNR);
-+ printk("set RTAR to %lx, now is %lx\n", time, now);
-+
-+ return ret;
-+}
-+
-+static irqreturn_t rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-+{
-+ unsigned int rtsr;
-+ unsigned long events = 0;
-+
-+ spin_lock(&rtc_lock);
-+
-+ rtsr = RTSR;
-+ /* clear interrupt sources */
-+ RTSR = 0;
-+ RTSR = (RTSR_AL|RTSR_HZ) & (rtsr >> 2);
-+
-+ printk(KERN_CRIT "rtc_interrupt: rtsr = %x\n", rtsr);
-+
-+ /* clear alarm interrupt if it has occurred */
-+ if (rtsr & RTSR_AL) {
-+ printk(KERN_CRIT "ALARM INTRRUPT\n");
-+ rtsr &= ~RTSR_ALE;
-+ }
-+ RTSR = rtsr & (RTSR_ALE|RTSR_HZE);
-+
-+ /* update irq data & counter */
-+ if (rtsr & RTSR_AL)
-+ events |= (RTC_AF|RTC_IRQF);
-+ if (rtsr & RTSR_HZ)
-+ events |= (RTC_UF|RTC_IRQF);
-+
-+ rtc_update(1, events);
-+
-+ if (rtsr & RTSR_AL && rtc_periodic_alarm(&rtc_alarm))
-+ rtc_update_alarm(&rtc_alarm);
-+
-+ spin_unlock(&rtc_lock);
-+
-+ return IRQ_HANDLED;
-+}
-+
-+
-+static int sa1100_rtc_open(void)
-+{
-+ int ret;
-+
-+ ret = request_irq(IRQ_RTC1Hz, rtc_interrupt, SA_INTERRUPT, "rtc 1Hz", NULL);
-+ if (ret) {
-+ printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_RTC1Hz);
-+ goto fail_ui;
-+ }
-+ ret = request_irq(IRQ_RTCAlrm, rtc_interrupt, SA_INTERRUPT, "rtc Alrm", NULL);
-+ if (ret) {
-+ printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_RTCAlrm);
-+ goto fail_ai;
-+ }
-+ return 0;
-+
-+ fail_ai:
-+ free_irq(IRQ_RTC1Hz, NULL);
-+ fail_ui:
-+ return ret;
-+}
-+
-+static void sa1100_rtc_release(void)
-+{
-+ spin_lock_irq (&rtc_lock);
-+ RTSR = 0;
-+ OIER &= ~OIER_E1;
-+ OSSR = OSSR_M1;
-+ spin_unlock_irq (&rtc_lock);
-+
-+ free_irq(IRQ_RTCAlrm, NULL);
-+ free_irq(IRQ_RTC1Hz, NULL);
-+}
-+
-+static int sa1100_rtc_ioctl(unsigned int cmd, unsigned long arg)
-+{
-+ switch (cmd) {
-+ case RTC_AIE_OFF:
-+ spin_lock_irq(&rtc_lock);
-+ RTSR &= ~RTSR_ALE;
-+ spin_unlock_irq(&rtc_lock);
-+ return 0;
-+ case RTC_AIE_ON:
-+ spin_lock_irq(&rtc_lock);
-+ RTSR |= RTSR_ALE;
-+ spin_unlock_irq(&rtc_lock);
-+ return 0;
-+ case RTC_UIE_OFF:
-+ spin_lock_irq(&rtc_lock);
-+ RTSR &= ~RTSR_HZE;
-+ spin_unlock_irq(&rtc_lock);
-+ return 0;
-+ case RTC_UIE_ON:
-+ spin_lock_irq(&rtc_lock);
-+ RTSR |= RTSR_HZE;
-+ spin_unlock_irq(&rtc_lock);
-+ return 0;
-+ }
-+ return -EINVAL;
-+}
-+
-+static void sa1100_rtc_read_time(struct rtc_time *tm)
-+{
-+ rtc_time_to_tm(RCNR, tm);
-+}
-+
-+static int sa1100_rtc_set_time(struct rtc_time *tm)
-+{
-+ unsigned long time;
-+ int ret;
-+
-+ ret = rtc_tm_to_time(tm, &time);
-+ if (ret == 0)
-+ RCNR = time;
-+ return ret;
-+}
-+
-+static void sa1100_rtc_read_alarm(struct rtc_wkalrm *alrm)
-+{
-+ memcpy(&alrm->time, &rtc_alarm, sizeof(struct rtc_time));
-+ alrm->pending = RTSR & RTSR_AL ? 1 : 0;
-+}
-+
-+static int sa1100_rtc_set_alarm(struct rtc_wkalrm *alrm)
-+{
-+ int ret;
-+
-+ printk("sa1100_rtc_set_alarm\n");
-+
-+ spin_lock_irq(&rtc_lock);
-+ ret = rtc_update_alarm(&alrm->time);
-+ if (ret == 0) {
-+ memcpy(&rtc_alarm, &alrm->time, sizeof(struct rtc_time));
-+
-+ if (alrm->enabled)
-+ enable_irq_wake(IRQ_RTCAlrm);
-+ else
-+ disable_irq_wake(IRQ_RTCAlrm);
-+ }
-+ spin_unlock_irq(&rtc_lock);
-+
-+ return ret;
-+}
-+
-+static int sa1100_rtc_proc(char *buf)
-+{
-+ char *p = buf;
-+
-+ p += sprintf(p, "trim/divider\t: 0x%08x\n", RTTR);
-+ p += sprintf(p, "alarm_IRQ\t: %s\n", (RTSR & RTSR_ALE) ? "yes" : "no" );
-+ p += sprintf(p, "update_IRQ\t: %s\n", (RTSR & RTSR_HZE) ? "yes" : "no");
-+ p += sprintf(p, "periodic_IRQ\t: %s\n", (OIER & OIER_E1) ? "yes" : "no");
-+ p += sprintf(p, "periodic_freq\t: %ld\n", rtc_freq);
-+
-+ return p - buf;
-+}
-+
-+static struct rtc_ops sa1100_rtc_ops = {
-+ .owner = THIS_MODULE,
-+ .open = sa1100_rtc_open,
-+ .release = sa1100_rtc_release,
-+ .ioctl = sa1100_rtc_ioctl,
-+
-+ .read_time = sa1100_rtc_read_time,
-+ .set_time = sa1100_rtc_set_time,
-+ .read_alarm = sa1100_rtc_read_alarm,
-+ .set_alarm = sa1100_rtc_set_alarm,
-+ .proc = sa1100_rtc_proc,
-+};
-+
-+static int __init rtc_init(void)
-+{
-+ /*
-+ * According to the manual we should be able to let RTTR be zero
-+ * and then a default diviser for a 32.768KHz clock is used.
-+ * Apparently this doesn't work, at least for my SA1110 rev 5.
-+ * If the clock divider is uninitialized then reset it to the
-+ * default value to get the 1Hz clock.
-+ */
-+ if (RTTR == 0) {
-+ RTTR = RTC_DEF_DIVIDER + (RTC_DEF_TRIM << 16);
-+ printk(KERN_WARNING "rtc: warning: initializing default clock divider/trim value\n");
-+ /* The current RTC value probably doesn't make sense either */
-+ RCNR = 0;
-+ }
-+
-+ register_rtc(&sa1100_rtc_ops);
-+
-+ return 0;
-+}
-+
-+static void __exit rtc_exit(void)
-+{
-+ unregister_rtc(&sa1100_rtc_ops);
-+}
-+
-+module_init(rtc_init);
-+module_exit(rtc_exit);
-+
-+MODULE_AUTHOR("Nils Faerber <nils@@kernelconcepts.de>");
-+MODULE_DESCRIPTION("SA1100 Realtime Clock Driver (RTC)");
-+MODULE_LICENSE("GPL"); /* so says the header */
-Index: linux-2.6.15gum/drivers/char/Makefile
-===================================================================
---- linux-2.6.15gum.orig/drivers/char/Makefile
-+++ linux-2.6.15gum/drivers/char/Makefile
-@@ -60,6 +60,7 @@ obj-$(CONFIG_RTC) += rtc.o
- obj-$(CONFIG_HPET) += hpet.o
- obj-$(CONFIG_GEN_RTC) += genrtc.o
- obj-$(CONFIG_EFI_RTC) += efirtc.o
-+obj-$(CONFIG_SA1100_RTC) += sa1100-rtc.o
- obj-$(CONFIG_SGI_DS1286) += ds1286.o
- obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o
- obj-$(CONFIG_DS1302) += ds1302.o
-Index: linux-2.6.15gum/drivers/char/Kconfig
-===================================================================
---- linux-2.6.15gum.orig/drivers/char/Kconfig
-+++ linux-2.6.15gum/drivers/char/Kconfig
-@@ -790,6 +790,10 @@ config COBALT_LCD
- This option enables support for the LCD display and buttons found
- on Cobalt systems through a misc device.
-
-+config SA1100_RTC
-+ tristate "SA1100/PXA2xx Real Time Clock"
-+ depends on ARCH_SA1100 || ARCH_PXA
-+
- config DTLK
- tristate "Double Talk PC internal speech card support"
- help
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-25 00:24:21 +0000