linux-kernel - Re: [PATCH] omap3isp: add support for CSI1 bus

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Date:   Wed, 15 Feb 2017 17:57:46 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Sakari Ailus <sakari.ailus@....fi>, mchehab@...nel.org,
        kernel list <linux-kernel@...r.kernel.org>,
        ivo.g.dimitrov.75@...il.com, pali.rohar@...il.com,
        linux-media@...r.kernel.org
Subject: Re: [PATCH] omap3isp: add support for CSI1 bus

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)

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