[ARM] 3999/1: RX3715: suspend to RAM support

The RX3715 is similar to the H1940 in the way
that suspend to RAM works, so we can use most
of the extant support for the H1940 with only
a few modifictions

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index 63965c78de8c652be823c23b9de504231c1a6479..08b2f300eb7978fa77f83d769f25f56b2a474663 100644 (file)
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -41,9 +41,16 @@ config BAST_PC104_IRQ
          Say Y here to enable the PC104 IRQ routing on the
          Simtec BAST (EB2410ITX)
 
+config PM_H1940
+       bool
+       depends on PM
+       help
+         Internal node for H1940 and related PM
+
 config ARCH_H1940
        bool "IPAQ H1940"
        select CPU_S3C2410
+       select PM_H1940
        help
          Say Y here if you are using the HP IPAQ H1940
 
@@ -115,6 +122,7 @@ config MACH_VR1000
 config MACH_RX3715
        bool "HP iPAQ rx3715"
        select CPU_S3C2440
+       select PM_H1940
        help
          Say Y here if you are using the HP iPAQ rx3715.
 

diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile
index 0cd71dfec4478d151d8a1b3b4abd2f5c7f5acd8c..27663e28cc8881bd49aefd1a59fba40b3b337862 100644 (file)
--- a/arch/arm/mach-s3c2410/Makefile
+++ b/arch/arm/mach-s3c2410/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_CPU_S3C2410_DMA) += s3c2410-dma.o
 
 obj-$(CONFIG_PM)               += pm.o sleep.o
 obj-$(CONFIG_PM_SIMTEC)                += pm-simtec.o
+obj-$(CONFIG_PM_H1940)         += pm-h1940.o
 
 # S3C2412 support
 obj-$(CONFIG_CPU_S3C2412)      += s3c2412.o
@@ -77,7 +78,7 @@ obj-$(CONFIG_MACH_AML_M5900)  += mach-amlm5900.o
 obj-$(CONFIG_MACH_ANUBIS)      += mach-anubis.o
 obj-$(CONFIG_MACH_OSIRIS)      += mach-osiris.o
 obj-$(CONFIG_ARCH_BAST)                += mach-bast.o usb-simtec.o
-obj-$(CONFIG_ARCH_H1940)       += mach-h1940.o pm-h1940.o
+obj-$(CONFIG_ARCH_H1940)       += mach-h1940.o
 obj-$(CONFIG_MACH_N30)         += mach-n30.o
 obj-$(CONFIG_ARCH_SMDK2410)    += mach-smdk2410.o
 obj-$(CONFIG_MACH_SMDK2413)    += mach-smdk2413.o

diff --git a/arch/arm/mach-s3c2410/mach-rx3715.c b/arch/arm/mach-s3c2410/mach-rx3715.c
index 23d7c052013ce08aeefd58f45fbc0ee858ae78d1..ecbcdf79d739b9abf1f4f5e248aca5292a412e39 100644 (file)
--- a/arch/arm/mach-s3c2410/mach-rx3715.c
+++ b/arch/arm/mach-s3c2410/mach-rx3715.c
@@ -42,6 +42,7 @@
 #include <asm/arch/regs-gpio.h>
 #include <asm/arch/regs-lcd.h>
 
+#include <asm/arch/h1940.h>
 #include <asm/arch/nand.h>
 #include <asm/arch/fb.h>
 
@@ -224,7 +225,9 @@ static void __init rx3715_init_irq(void)
 
 static void __init rx3715_init_machine(void)
 {
+       memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
        s3c2410_pm_init();
+
        s3c24xx_fb_set_platdata(&rx3715_lcdcfg);
 }
 

diff --git a/arch/arm/mach-s3c2410/s3c2410-pm.c b/arch/arm/mach-s3c2410/s3c2410-pm.c
index 9cd0c104f1cbc05efdcef9d0279fc0b35dbc38da..77c6814c0f0507599c650e72d35bfd3d071b6c58 100644 (file)
--- a/arch/arm/mach-s3c2410/s3c2410-pm.c
+++ b/arch/arm/mach-s3c2410/s3c2410-pm.c
@@ -66,6 +66,22 @@ static void s3c2410_pm_prepare(void)
                __raw_writel(calc, phys_to_virt(H1940_SUSPEND_CHECKSUM));
        }
 
+       /* the RX3715 uses similar code and the same H1940 and the
+        * same offsets for resume and checksum pointers */
+
+       if (machine_is_rx3715()) {
+               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_GPF2, 1);
 

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index f2d0d6f789731fffa9d4d9add9fb26a90d1124a0..b7f194af20b490b03c85805ad9731fda33c6745c 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -619,7 +619,9 @@ void __init reserve_node_zero(pg_data_t *pgdat)
        if (machine_is_p720t())
                res_size = 0x00014000;
 
-       if (machine_is_h1940()) {
+       /* H1940 and RX3715 need to reserve this for suspend */
+
+       if (machine_is_h1940() || machine_is_rx3715()) {
                reserve_bootmem_node(pgdat, 0x30003000, 0x1000);
                reserve_bootmem_node(pgdat, 0x30081000, 0x1000);
        }