omap3isp: add support for CSI1 bus

  Hi!

> > +		if (enable) {
> > +			csirxfe = OMAP343X_CONTROL_CSIRXFE_PWRDNZ |
> > +				  OMAP343X_CONTROL_CSIRXFE_RESET;
> > +
> > +			if (buscfg->phy_layer)
> > +				csirxfe |= OMAP343X_CONTROL_CSIRXFE_SELFORM;
> > +
> > +			if (buscfg->strobe_clk_pol)
> > +				csirxfe |= OMAP343X_CONTROL_CSIRXFE_CSIB_INV;
> > +		} else
> > +			csirxfe = 0;
> 
> You need curly braces for the else statement too.
> 
> > +
> > +		regmap_write(isp->syscon, isp->syscon_offset, csirxfe);
> 
> Isn't this already configured by csiphy_routing_cfg_3430(), called through 
> omap3isp_csiphy_acquire() ? You'll need to add support for the strobe/clock 
> polarity there, but the rest should already be handled.

It seems csiphy_routing_cfg_3430 is not called at all. I added
printks, but they don't trigger. If you have an idea what is going on
there, it would help...
									Pavel
  

Hi,

On Wed, Feb 15, 2017 at 11:23:01AM +0100, Pavel Machek wrote:
> It seems csiphy_routing_cfg_3430 is not called at all. I added
> printks, but they don't trigger. If you have an idea what is going on
> there, it would help...

You added printk to csiphy_routing_cfg_3630 instead of csiphy_routing_cfg_3430
and N900 has OMAP3430. Function should be called when you start (or
stop) using the camera:

csiphy_routing_cfg_3430(...)
csiphy_routing_cfg(...)
omap3isp_csiphy_config(...)
omap3isp_csiphy_acquire(...) & omap3isp_csiphy_release(...)
ccp2_s_stream(...)

-- Sebastian

> diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c b/drivers/media/platform/omap3isp/ispcsiphy.c
> index 6b814e1..fe9303a 100644
> --- a/drivers/media/platform/omap3isp/ispcsiphy.c
> +++ b/drivers/media/platform/omap3isp/ispcsiphy.c
> @@ -30,6 +30,8 @@ static void csiphy_routing_cfg_3630(struct isp_csiphy *phy,
>  	u32 reg;
>  	u32 shift, mode;
>  
> +	printk("routing cfg 3630: iface %d, %d\n", iface, ISP_INTERFACE_CCP2B_PHY1);
> +	
>  	regmap_read(phy->isp->syscon, phy->isp->syscon_offset, &reg);
>  
>  	switch (iface) {
> @@ -74,6 +76,9 @@ static void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on,
>  	u32 csirxfe = OMAP343X_CONTROL_CSIRXFE_PWRDNZ
>  		| OMAP343X_CONTROL_CSIRXFE_RESET;
>  
> +	/* FIXME: can this be used instead of if (isp->revision) in ispccp2.c? */
> +	
> +	printk("routing cfg: iface %d, %d\n", iface, ISP_INTERFACE_CCP2B_PHY1);
>  	/* Only the CCP2B on PHY1 is configurable. */
>  	if (iface != ISP_INTERFACE_CCP2B_PHY1)
>  		return;
> @@ -105,6 +110,7 @@ static void csiphy_routing_cfg(struct isp_csiphy *phy,
>  			       enum isp_interface_type iface, bool on,
>  			       bool ccp2_strobe)
>  {
> +	printk("csiphy_routing_cfg\n");
>  	if (phy->isp->phy_type == ISP_PHY_TYPE_3630 && on)
>  		return csiphy_routing_cfg_3630(phy, iface, ccp2_strobe);
>  	if (phy->isp->phy_type == ISP_PHY_TYPE_3430)
  

On Wed 2017-02-15 17:57:46, Sebastian Reichel wrote:
> Hi,
> 
> On Wed, Feb 15, 2017 at 11:23:01AM +0100, Pavel Machek wrote:
> > It seems csiphy_routing_cfg_3430 is not called at all. I added
> > printks, but they don't trigger. If you have an idea what is going on
> > there, it would help...
> 
> You added printk to csiphy_routing_cfg_3630 instead of csiphy_routing_cfg_3430
> and N900 has OMAP3430. Function should be called when you start (or
> stop) using the camera:
> 
> csiphy_routing_cfg_3430(...)
> csiphy_routing_cfg(...)
> omap3isp_csiphy_config(...)
> omap3isp_csiphy_acquire(...) & omap3isp_csiphy_release(...)
> ccp2_s_stream(...)

Take another look, I believe I added printk to both of them.

Thanks for the expected backtrace, that should help figuring it out.

> -- Sebastian
> 
> > diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c b/drivers/media/platform/omap3isp/ispcsiphy.c
> > index 6b814e1..fe9303a 100644
> > --- a/drivers/media/platform/omap3isp/ispcsiphy.c
> > +++ b/drivers/media/platform/omap3isp/ispcsiphy.c
> > @@ -30,6 +30,8 @@ static void csiphy_routing_cfg_3630(struct isp_csiphy *phy,
> >  	u32 reg;
> >  	u32 shift, mode;
> >  
> > +	printk("routing cfg 3630: iface %d, %d\n", iface, ISP_INTERFACE_CCP2B_PHY1);
> > +	
> >  	regmap_read(phy->isp->syscon, phy->isp->syscon_offset, &reg);
> >  
> >  	switch (iface) {
> > @@ -74,6 +76,9 @@ static void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on,
> >  	u32 csirxfe = OMAP343X_CONTROL_CSIRXFE_PWRDNZ
> >  		| OMAP343X_CONTROL_CSIRXFE_RESET;
> >  
> > +	/* FIXME: can this be used instead of if (isp->revision) in ispccp2.c? */
> > +	
> > +	printk("routing cfg: iface %d, %d\n", iface, ISP_INTERFACE_CCP2B_PHY1);
> >  	/* Only the CCP2B on PHY1 is configurable. */
> >  	if (iface != ISP_INTERFACE_CCP2B_PHY1)
> >  		return;
> > @@ -105,6 +110,7 @@ static void csiphy_routing_cfg(struct isp_csiphy *phy,
> >  			       enum isp_interface_type iface, bool on,
> >  			       bool ccp2_strobe)
> >  {
> > +	printk("csiphy_routing_cfg\n");
> >  	if (phy->isp->phy_type == ISP_PHY_TYPE_3630 && on)
> >  		return csiphy_routing_cfg_3630(phy, iface, ccp2_strobe);
> >  	if (phy->isp->phy_type == ISP_PHY_TYPE_3430)