RE: [patch-v2.6.32+ 3/8] usb: musb: get rid of musb->set_clock

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> -----Original Message-----
> From: Felipe Balbi [mailto:felipe.balbi@xxxxxxxxx]
> Sent: Tuesday, December 15, 2009 2:39 PM
> To: Greg Kroah-Hartman
> Cc: Linux USB Mailing List; David Brownell; Gadiyar, Anand; Gupta, Ajay
> Kumar; Arnaud Mandy; Heikki Krogerus; Felipe Balbi
> Subject: [patch-v2.6.32+ 3/8] usb: musb: get rid of musb->set_clock
> 
> ... and use clk framework functions only.
> 
> Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxx>
> ---
>  drivers/usb/musb/musb_core.c |   12 +++---------
>  drivers/usb/musb/musb_core.h |    2 --
>  drivers/usb/musb/omap2430.c  |   10 ++--------
>  drivers/usb/musb/tusb6010.c  |   16 ++++++----------
>  4 files changed, 11 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
> index 6c65cf4..f5fadf7 100644
> --- a/drivers/usb/musb/musb_core.c
> +++ b/drivers/usb/musb/musb_core.c
> @@ -1907,7 +1907,6 @@ bad_config:
>  	spin_lock_init(&musb->lock);
>  	musb->board_mode = plat->mode;
>  	musb->board_set_power = plat->set_power;
> -	musb->set_clock = plat->set_clock;
>  	musb->min_power = plat->min_power;
> 
>  	/* Clock usage is chip-specific ... functional clock (DaVinci,
> @@ -2159,11 +2158,9 @@ static int musb_suspend(struct device *dev)
>  		 */
>  	}
> 
> -	if (musb->set_clock)
> -		musb->set_clock(musb->clock, 0);
> -	else
> -		clk_disable(musb->clock);
> +	clk_disable(musb->clock);
>  	spin_unlock_irqrestore(&musb->lock, flags);
> +
>  	return 0;
>  }
> 
> @@ -2175,10 +2172,7 @@ static int musb_resume_noirq(struct device *dev)
>  	if (!musb->clock)
>  		return 0;
> 
> -	if (musb->set_clock)
> -		musb->set_clock(musb->clock, 1);
> -	else
> -		clk_enable(musb->clock);
> +	clk_enable(musb->clock);
> 
>  	/* for static cmos like DaVinci, register values were preserved
>  	 * unless for some reason the whole soc powered down or the USB
> diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
> index 2ac0e6f..4a43a32 100644
> --- a/drivers/usb/musb/musb_core.h
> +++ b/drivers/usb/musb/musb_core.h
> @@ -394,8 +394,6 @@ struct musb {
>  	u8 board_mode;		/* enum musb_mode */
>  	int			(*board_set_power)(int state);
> 
> -	int			(*set_clock)(struct clk *clk, int is_active);
> -

I don't see any patch to fix compilation error in arch/arm/mach-omap2/
usb-musb.c due to this removal.

Similarly it would cause compilation error in davinci and Blackfin if
They are using set_clock().


-Ajay 
>  	u8			min_power;	/* vbus for periph, in mA/2 */
> 
>  	bool			is_host;
> diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
> index 83beeac..b8e2451 100644
> --- a/drivers/usb/musb/omap2430.c
> +++ b/drivers/usb/musb/omap2430.c
> @@ -273,10 +273,7 @@ int musb_platform_suspend(struct musb *musb)
> 
>  	otg_set_suspend(musb->xceiv, 1);
> 
> -	if (musb->set_clock)
> -		musb->set_clock(musb->clock, 0);
> -	else
> -		clk_disable(musb->clock);
> +	clk_disable(musb->clock);
> 
>  	return 0;
>  }
> @@ -290,10 +287,7 @@ static int musb_platform_resume(struct musb *musb)
> 
>  	otg_set_suspend(musb->xceiv, 0);
> 
> -	if (musb->set_clock)
> -		musb->set_clock(musb->clock, 1);
> -	else
> -		clk_enable(musb->clock);
> +	clk_enable(musb->clock);
> 
>  	l = omap_readl(OTG_SYSCONFIG);
>  	l &= ~ENABLEWAKEUP;	/* disable wakeup */
> diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
> index 88b587c..67ba2b9 100644
> --- a/drivers/usb/musb/tusb6010.c
> +++ b/drivers/usb/musb/tusb6010.c
> @@ -279,12 +279,10 @@ static int tusb_draw_power(struct otg_transceiver
> *x, unsigned mA)
>  	 * Keep clock active when enabled. Note that this is not tied to
>  	 * drawing VBUS, as with OTG mA can be less than musb->min_power.
>  	 */
> -	if (musb->set_clock) {
> -		if (mA)
> -			musb->set_clock(musb->clock, 1);
> -		else
> -			musb->set_clock(musb->clock, 0);
> -	}
> +	if (mA)
> +		clk_enable(musb->clock);
> +	else
> +		clk_disable(musb->clock);
> 
>  	/* tps65030 seems to consume max 100mA, with maybe 60mA available
>  	 * (measured on one board) for things other than tps and tusb.
> @@ -531,8 +529,7 @@ static void tusb_source_power(struct musb *musb, int
> is_on)
>  	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
> 
>  	if (is_on) {
> -		if (musb->set_clock)
> -			musb->set_clock(musb->clock, 1);
> +		clk_enable(musb->clock);
>  		timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE);
>  		musb->xceiv->default_a = 1;
>  		musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
> @@ -571,8 +568,7 @@ static void tusb_source_power(struct musb *musb, int
> is_on)
> 
>  		devctl &= ~MUSB_DEVCTL_SESSION;
>  		conf &= ~TUSB_DEV_CONF_USB_HOST_MODE;
> -		if (musb->set_clock)
> -			musb->set_clock(musb->clock, 0);
> +		clk_disable(musb->clock);
>  	}
>  	prcm &= ~(TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN);
> 
> --
> 1.6.6.rc0

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