Signed-off-by: Scott Wood <[EMAIL PROTECTED]> --- arch/powerpc/sysdev/6xx-suspend.S | 52 +++++++++++++++++++++++++++++++++++++ arch/powerpc/sysdev/Makefile | 4 +++ include/asm-powerpc/mpc6xx.h | 6 ++++ 3 files changed, 62 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/sysdev/6xx-suspend.S create mode 100644 include/asm-powerpc/mpc6xx.h
diff --git a/arch/powerpc/sysdev/6xx-suspend.S b/arch/powerpc/sysdev/6xx-suspend.S new file mode 100644 index 0000000..21cda08 --- /dev/null +++ b/arch/powerpc/sysdev/6xx-suspend.S @@ -0,0 +1,52 @@ +/* + * Enter and leave sleep state on chips with 6xx-style HID0 + * power management bits, which don't leave sleep state via reset. + * + * Author: Scott Wood <[EMAIL PROTECTED]> + * + * Copyright (c) 2006-2007 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <asm/ppc_asm.h> +#include <asm/reg.h> +#include <asm/thread_info.h> +#include <asm/asm-offsets.h> + +_GLOBAL(mpc6xx_enter_standby) + mflr r4 + + mfspr r5, SPRN_HID0 + rlwinm r5, r5, 0, ~(HID0_DOZE | HID0_NAP) + oris r5, r5, [EMAIL PROTECTED] + mtspr SPRN_HID0, r5 + isync + + lis r5, [EMAIL PROTECTED] + ori r5, r5, [EMAIL PROTECTED] + mtlr r5 + + rlwinm r5, r1, 0, 0, 31-THREAD_SHIFT + lwz r6, TI_LOCAL_FLAGS(r5) + ori r6, r6, _TLF_SLEEPING + stw r6, TI_LOCAL_FLAGS(r5) + + mfmsr r5 + ori r5, r5, MSR_EE + oris r5, r5, [EMAIL PROTECTED] + sync + mtmsr r5 + isync + +1: b 1b + +ret_from_standby: + mfspr r5, SPRN_HID0 + rlwinm r5, r5, 0, ~HID0_SLEEP + mtspr SPRN_HID0, r5 + + mtlr r4 + blr diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index 99a77d7..df2b885 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -37,3 +37,7 @@ obj-$(CONFIG_PPC_DCR) += dcr.o obj-$(CONFIG_8xx) += mpc8xx_pic.o commproc.o obj-$(CONFIG_UCODE_PATCH) += micropatch.o endif + +ifeq ($(CONFIG_SUSPEND),y) +obj-$(CONFIG_6xx) += 6xx-suspend.o +endif diff --git a/include/asm-powerpc/mpc6xx.h b/include/asm-powerpc/mpc6xx.h new file mode 100644 index 0000000..effc229 --- /dev/null +++ b/include/asm-powerpc/mpc6xx.h @@ -0,0 +1,6 @@ +#ifndef __ASM_POWERPC_MPC6xx_H +#define __ASM_POWERPC_MPC6xx_H + +void mpc6xx_enter_standby(void); + +#endif -- 1.5.3.7 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
