diff options
| author |   Sonic Zhang <sonic.zhang@analog.com> | 2012-07-23 11:35:30 +0800 |
|---|---|---|
| committer |   Bob Liu <lliubbo@gmail.com> | 2012-07-24 13:39:49 +0800 |
| commit | c7e48e1e3e926de21605f959c31689d56fb639e3 (patch) | |
| tree | 4a598fd55ed79fdcf63077318e04d6f39be594d0 /arch/blackfin/mach-bf609/hibernate.S | |
| parent | irq: set cgu event handle to fasteoi handle (diff) | |
| download | linux-dev-c7e48e1e3e926de21605f959c31689d56fb639e3.tar.xz linux-dev-c7e48e1e3e926de21605f959c31689d56fb639e3.zip | |
bfin: pm: add deepsleep for bf60x
Add add deepsleep for bf60x.
1. Call DMC init functions to enter and exit DDR self refresh mode.
2. Wait till CGU PLL is locked after wake up and exit DDR self refresh mode.
3. Make asessembly function enter_deepsleep comply with C funtion ABI in
order to call other C functions.
4. Switch kernel stack by register EX_SCRATCH_REG.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Diffstat (limited to 'arch/blackfin/mach-bf609/hibernate.S')
| -rw-r--r-- | arch/blackfin/mach-bf609/hibernate.S | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/arch/blackfin/mach-bf609/hibernate.S b/arch/blackfin/mach-bf609/hibernate.S deleted file mode 100644 index d37a532519c8..000000000000 --- a/arch/blackfin/mach-bf609/hibernate.S +++ /dev/null @@ -1,65 +0,0 @@ -#include <linux/linkage.h> -#include <asm/blackfin.h> -#include <asm/dpmc.h> - -#define PM_STACK (COREA_L1_SCRATCH_START + L1_SCRATCH_LENGTH - 12) - -.section .l1.text -ENTRY(_enter_hibernate) - /* switch stack to L1 scratch, prepare for ddr srfr */ - P0.H = HI(PM_STACK); - P0.L = LO(PM_STACK); - SP = P0; - - call _bf609_ddr_sr; - call _bfin_hibernate_syscontrol; - - P0.H = HI(DPM0_RESTORE4); - P0.L = LO(DPM0_RESTORE4); - P1.H = _bf609_pm_data; - P1.L = _bf609_pm_data; - [P0] = P1; - - P0.H = HI(DPM0_CTL); - P0.L = LO(DPM0_CTL); - R3.H = HI(0x00000010); - R3.L = LO(0x00000010); - - bfin_init_pm_bench_cycles; - - [P0] = R3; - - SSYNC; -ENDPROC(_enter_hibernate_mode) - -.section .text -ENTRY(_bf609_hibernate) - bfin_cpu_reg_save; - bfin_core_mmr_save; - - P0.H = _bf609_pm_data; - P0.L = _bf609_pm_data; - R1.H = 0xDEAD; - R1.L = 0xBEEF; - R2.H = .Lpm_resume_here; - R2.L = .Lpm_resume_here; - [P0++] = R1; - [P0++] = R2; - [P0++] = SP; - - P1.H = _enter_hibernate; - P1.L = _enter_hibernate; - - call (P1); -.Lpm_resume_here: - - bfin_core_mmr_restore; - bfin_cpu_reg_restore; - - [--sp] = RETI; /* Clear Global Interrupt Disable */ - SP += 4; - - RTS; - -ENDPROC(_bf609_hibernate) - |