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authorKukjin Kim <kgene.kim@samsung.com>2012-02-06 01:38:19 +0100
committerKukjin Kim <kgene.kim@samsung.com>2012-03-02 23:47:38 +0100
commit85fd6d63bf2927b9da7ab1b0d46723bfdb13808c (patch)
tree7033ac06e365209b09ba4b97eba0cf2f7ceb3312 /arch/arm/mach-s3c24xx/pm-s3c2410.c
parentARM: S3C24XX: change the ARCH_S3C2410 to ARCH_S3C24XX (diff)
downloadlinux-85fd6d63bf2927b9da7ab1b0d46723bfdb13808c.tar.xz
linux-85fd6d63bf2927b9da7ab1b0d46723bfdb13808c.zip
ARM: S3C2410: move mach-s3c2410/* into mach-s3c24xx/
This patch moves S3C2410 stuff into mach-s3c24xx/ directory so that we can merge the s3c24 series' directories to the just one mach-s3c24xx/ directory. And this patch is including following. - re-ordered alphabetically by option text at Kconfig and Makefile - removed unused option, MACH_N35 - fixed duplcated option name, S3C2410_DMA to S3C24XX_DMA which is in plat-s3c24xx/ Cc: Ben Dooks <ben-linux@fluff.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s3c24xx/pm-s3c2410.c')
-rw-r--r--arch/arm/mach-s3c24xx/pm-s3c2410.c180
1 files changed, 180 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/pm-s3c2410.c b/arch/arm/mach-s3c24xx/pm-s3c2410.c
new file mode 100644
index 000000000000..fda5385deff6
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/pm-s3c2410.c
@@ -0,0 +1,180 @@
+/* linux/arch/arm/mach-s3c2410/pm.c
+ *
+ * Copyright (c) 2006 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 (and compatible) Power Manager (Suspend-To-RAM) support
+ *
+ * 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.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/init.h>
+#include <linux/suspend.h>
+#include <linux/errno.h>
+#include <linux/time.h>
+#include <linux/device.h>
+#include <linux/syscore_ops.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+
+#include <asm/mach-types.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/h1940.h>
+
+#include <plat/cpu.h>
+#include <plat/pm.h>
+
+static void s3c2410_pm_prepare(void)
+{
+ /* ensure at least GSTATUS3 has the resume address */
+
+ __raw_writel(virt_to_phys(s3c_cpu_resume), S3C2410_GSTATUS3);
+
+ S3C_PMDBG("GSTATUS3 0x%08x\n", __raw_readl(S3C2410_GSTATUS3));
+ S3C_PMDBG("GSTATUS4 0x%08x\n", __raw_readl(S3C2410_GSTATUS4));
+
+ if (machine_is_h1940()) {
+ void *base = phys_to_virt(H1940_SUSPEND_CHECK);
+ unsigned long ptr;
+ unsigned long calc = 0;
+
+ /* generate check for the bootloader to check on resume */
+
+ for (ptr = 0; ptr < 0x40000; ptr += 0x400)
+ calc += __raw_readl(base+ptr);
+
+ __raw_writel(calc, phys_to_virt(H1940_SUSPEND_CHECKSUM));
+ }
+
+ /* RX3715 and RX1950 use similar to H1940 code and the
+ * same offsets for resume and checksum pointers */
+
+ if (machine_is_rx3715() || machine_is_rx1950()) {
+ void *base = phys_to_virt(H1940_SUSPEND_CHECK);
+ unsigned long ptr;
+ unsigned long calc = 0;
+
+ /* generate check for the bootloader to check on resume */
+
+ for (ptr = 0; ptr < 0x40000; ptr += 0x4)
+ calc += __raw_readl(base+ptr);
+
+ __raw_writel(calc, phys_to_virt(H1940_SUSPEND_CHECKSUM));
+ }
+
+ if ( machine_is_aml_m5900() )
+ s3c2410_gpio_setpin(S3C2410_GPF(2), 1);
+
+ if (machine_is_rx1950()) {
+ /* According to S3C2442 user's manual, page 7-17,
+ * when the system is operating in NAND boot mode,
+ * the hardware pin configuration - EINT[23:21] –
+ * must be set as input for starting up after
+ * wakeup from sleep mode
+ */
+ s3c_gpio_cfgpin(S3C2410_GPG(13), S3C2410_GPIO_INPUT);
+ s3c_gpio_cfgpin(S3C2410_GPG(14), S3C2410_GPIO_INPUT);
+ s3c_gpio_cfgpin(S3C2410_GPG(15), S3C2410_GPIO_INPUT);
+ }
+}
+
+static void s3c2410_pm_resume(void)
+{
+ unsigned long tmp;
+
+ /* unset the return-from-sleep flag, to ensure reset */
+
+ tmp = __raw_readl(S3C2410_GSTATUS2);
+ tmp &= S3C2410_GSTATUS2_OFFRESET;
+ __raw_writel(tmp, S3C2410_GSTATUS2);
+
+ if ( machine_is_aml_m5900() )
+ s3c2410_gpio_setpin(S3C2410_GPF(2), 0);
+}
+
+struct syscore_ops s3c2410_pm_syscore_ops = {
+ .resume = s3c2410_pm_resume,
+};
+
+static int s3c2410_pm_add(struct device *dev)
+{
+ pm_cpu_prep = s3c2410_pm_prepare;
+ pm_cpu_sleep = s3c2410_cpu_suspend;
+
+ return 0;
+}
+
+#if defined(CONFIG_CPU_S3C2410)
+static struct subsys_interface s3c2410_pm_interface = {
+ .name = "s3c2410_pm",
+ .subsys = &s3c2410_subsys,
+ .add_dev = s3c2410_pm_add,
+};
+
+/* register ourselves */
+
+static int __init s3c2410_pm_drvinit(void)
+{
+ return subsys_interface_register(&s3c2410_pm_interface);
+}
+
+arch_initcall(s3c2410_pm_drvinit);
+
+static struct subsys_interface s3c2410a_pm_interface = {
+ .name = "s3c2410a_pm",
+ .subsys = &s3c2410a_subsys,
+ .add_dev = s3c2410_pm_add,
+};
+
+static int __init s3c2410a_pm_drvinit(void)
+{
+ return subsys_interface_register(&s3c2410a_pm_interface);
+}
+
+arch_initcall(s3c2410a_pm_drvinit);
+#endif
+
+#if defined(CONFIG_CPU_S3C2440)
+static struct subsys_interface s3c2440_pm_interface = {
+ .name = "s3c2440_pm",
+ .subsys = &s3c2440_subsys,
+ .add_dev = s3c2410_pm_add,
+};
+
+static int __init s3c2440_pm_drvinit(void)
+{
+ return subsys_interface_register(&s3c2440_pm_interface);
+}
+
+arch_initcall(s3c2440_pm_drvinit);
+#endif
+
+#if defined(CONFIG_CPU_S3C2442)
+static struct subsys_interface s3c2442_pm_interface = {
+ .name = "s3c2442_pm",
+ .subsys = &s3c2442_subsys,
+ .add_dev = s3c2410_pm_add,
+};
+
+static int __init s3c2442_pm_drvinit(void)
+{
+ return subsys_interface_register(&s3c2442_pm_interface);
+}
+
+arch_initcall(s3c2442_pm_drvinit);
+#endif