RE: [PATCH 12/13] DSPBRIDGE: fix resuming problem with dsp hibernation

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Hi,

> -----Original Message-----
> From: Ameya Palande [mailto:ameya.palande@xxxxxxxxx]
> Sent: Wednesday, July 15, 2009 9:57 AM
> To: linux-omap@xxxxxxxxxxxxxxx
> Cc: Ramirez Luna, Omar; Guzman Lugo, Fernando; Menon, Nishanth;
> hiroshi.doyu@xxxxxxxxx
> Subject: [PATCH 12/13] DSPBRIDGE: fix resuming problem with dsp
> hibernation
> 
> From: Hiroshi DOYU <Hiroshi.DOYU@xxxxxxxxx>
> 
> The constraints(opp >= 2) should be set whenever returning from DSP
> hibernation.
> 
> This fixes the problem at the following steps:
> 1) wait DSP hibernate
> 2) echo mem > /sys/power/state
> 3) type key to wakeup
> 

The patch looks good, you are removing the check for OPP1 because it is suppose that if the DSP is in Hibernation we have a DSP constrain in OPP1, so I think the "if" is always true. However I don't see the issue the mention could you please tell me what was the problem you were seeing?


> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@xxxxxxxxx>
> ---
>  drivers/dsp/bridge/wmd/tiomap_sm.c |   16 +++++-----------
>  1 files changed, 5 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/dsp/bridge/wmd/tiomap_sm.c
> b/drivers/dsp/bridge/wmd/tiomap_sm.c
> index 02e2675..69f6fb3 100644
> --- a/drivers/dsp/bridge/wmd/tiomap_sm.c
> +++ b/drivers/dsp/bridge/wmd/tiomap_sm.c
> @@ -98,11 +98,6 @@ DSP_STATUS CHNLSM_DisableInterrupt(struct
> WMD_DEV_CONTEXT *pDevContext)
>  DSP_STATUS CHNLSM_InterruptDSP2(struct WMD_DEV_CONTEXT *pDevContext,
>  				u16 wMbVal)
>  {
> -#ifdef CONFIG_BRIDGE_DVFS
> -	struct dspbridge_platform_data *pdata =
> -		omap_dspbridge_dev->dev.platform_data;
> -	u32 opplevel = 0;
> -#endif
>  	struct CFG_HOSTRES resources;
>  	DSP_STATUS status = DSP_SOK;
>  	unsigned long timeout;
> @@ -116,12 +111,11 @@ DSP_STATUS CHNLSM_InterruptDSP2(struct
> WMD_DEV_CONTEXT *pDevContext,
>  	if (pDevContext->dwBrdState == BRD_DSP_HIBERNATION ||
>  	    pDevContext->dwBrdState == BRD_HIBERNATION) {
>  #ifdef CONFIG_BRIDGE_DVFS
> -		if (pdata->dsp_get_opp)
> -			opplevel = (*pdata->dsp_get_opp)();
> -		if (opplevel == VDD1_OPP1) {
> -			if (pdata->dsp_set_min_opp)
> -				(*pdata->dsp_set_min_opp)(VDD1_OPP2);
> -		}
> +		struct dspbridge_platform_data *pdata =
> +			omap_dspbridge_dev->dev.platform_data;
> +
> +		if (pdata->dsp_set_min_opp)
> +			(*pdata->dsp_set_min_opp)(VDD1_OPP2);
>  #endif
>  		/* Restart the peripheral clocks */
>  		DSP_PeripheralClocks_Enable(pDevContext, NULL);
> --
> 1.6.2.4
> 

Regards,
Fernando.
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