diff options
| author | Sammy He <r62914@freescale.com> | 2010-05-15 01:12:21 +0800 |
|---|---|---|
| committer | Sammy He <r62914@freescale.com> | 2010-05-15 01:35:43 +0800 |
| commit | caab41bfef2d83c82e08a43d1abff387ca3f07c4 (patch) | |
| tree | 71992a1e76446b6bc4bce68802061d4ecea1d7a4 | |
| parent | 74781ddfd9926c0c28de21b52171dbf18ffed1c4 (diff) | |
ENGR00123489 Support vpu suspend/resume on mx53
Support vpu suspend/resume on mx53. Don't do power gating and
firmware re-install on mx53.
Signed-off-by: Sammy He <r62914@freescale.com>
| -rw-r--r-- | drivers/mxc/vpu/mxc_vpu.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/mxc/vpu/mxc_vpu.c b/drivers/mxc/vpu/mxc_vpu.c index b9ae23928c5d..f62e3d46a67c 100644 --- a/drivers/mxc/vpu/mxc_vpu.c +++ b/drivers/mxc/vpu/mxc_vpu.c @@ -690,20 +690,22 @@ static int vpu_suspend(struct platform_device *pdev, pm_message_t state) for (i = 0; i < vpu_clk_usercount; i++) clk_disable(vpu_clk); - clk_enable(vpu_clk); - if (bitwork_mem.cpu_addr != 0) { - SAVE_WORK_REGS; - SAVE_CTRL_REGS; - SAVE_RDWR_PTR_REGS; - SAVE_DIS_FLAG_REGS; - - WRITE_REG(0x1, BIT_BUSY_FLAG); - WRITE_REG(VPU_SLEEP_REG_VALUE, BIT_RUN_COMMAND); - while (READ_REG(BIT_BUSY_FLAG)) ; + if (!cpu_is_mx53()) { + clk_enable(vpu_clk); + if (bitwork_mem.cpu_addr != 0) { + SAVE_WORK_REGS; + SAVE_CTRL_REGS; + SAVE_RDWR_PTR_REGS; + SAVE_DIS_FLAG_REGS; + + WRITE_REG(0x1, BIT_BUSY_FLAG); + WRITE_REG(VPU_SLEEP_REG_VALUE, BIT_RUN_COMMAND); + while (READ_REG(BIT_BUSY_FLAG)) + ; + } + clk_disable(vpu_clk); } - clk_disable(vpu_clk); - if (cpu_is_mx37() || cpu_is_mx51()) mxc_pg_enable(pdev); @@ -722,8 +724,10 @@ static int vpu_resume(struct platform_device *pdev) if (cpu_is_mx37() || cpu_is_mx51()) mxc_pg_disable(pdev); - clk_enable(vpu_clk); + if (cpu_is_mx53()) + goto recover_clk; + clk_enable(vpu_clk); if (bitwork_mem.cpu_addr != 0) { u32 *p = (u32 *) bitwork_mem.cpu_addr; u32 data; @@ -786,9 +790,9 @@ static int vpu_resume(struct platform_device *pdev) WRITE_REG(VPU_WAKE_REG_VALUE, BIT_RUN_COMMAND); while (READ_REG(BIT_BUSY_FLAG)) ; } - clk_disable(vpu_clk); +recover_clk: /* Recover vpu clock */ for (i = 0; i < vpu_clk_usercount; i++) clk_enable(vpu_clk); |