linux-kernel - Re: [PATCH v4 01/23] mfd: omap-usb-host: get rid of cpu_is

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Message-ID: <20121213214949.GH4989@atomide.com>
Date:	Thu, 13 Dec 2012 13:49:49 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	sameo@...ux.intel.com
Cc:	balbi@...com, sameo@...ux.intel.com, paul@...an.com,
	keshava_mgowda@...com, sshtylyov@...sta.com, bjorn@...k.no,
	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Roger Quadros <rogerq@...com>
Subject: Re: [PATCH v4 01/23] mfd: omap-usb-host: get rid of
 cpu_is_omap..() macros

Hi Samuel,

* Roger Quadros <rogerq@...com> [121210 02:23]:
> Instead of using cpu_is_omap..() macros in the device driver we
> rely on information provided in the platform data.
> 
> The only information we need is whether the USB Host module has
> a single ULPI bypass control bit for all ports or individual bypass
> control bits for each port. OMAP3 REV2.1 and earlier have the former.

I'd like to apply this patch as a fix so I can finally nuke plat/cpu.h
for omaps by -rc1 before more drivers start using it again.

That is assuming nobody else is planning on merging this series for
v3.8 presumably. Want to ack this one?

Regards,

Tony


> 
> Signed-off-by: Roger Quadros <rogerq@...com>
> CC: Tony Lindgren <tony@...mide.com>
> ---
>  arch/arm/mach-omap2/usb-host.c         |    4 ++++
>  drivers/mfd/omap-usb-host.c            |    2 +-
>  include/linux/platform_data/usb-omap.h |    3 +++
>  3 files changed, 8 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
> index d1dbe12..2e44e8a 100644
> --- a/arch/arm/mach-omap2/usb-host.c
> +++ b/arch/arm/mach-omap2/usb-host.c
> @@ -508,6 +508,10 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
>  	if (cpu_is_omap34xx()) {
>  		setup_ehci_io_mux(pdata->port_mode);
>  		setup_ohci_io_mux(pdata->port_mode);
> +
> +		if (omap_rev() <= OMAP3430_REV_ES2_1)
> +			usbhs_data.single_ulpi_bypass = true;
> +
>  	} else if (cpu_is_omap44xx()) {
>  		setup_4430ehci_io_mux(pdata->port_mode);
>  		setup_4430ohci_io_mux(pdata->port_mode);
> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
> index cebfe0a..fe7906b 100644
> --- a/drivers/mfd/omap-usb-host.c
> +++ b/drivers/mfd/omap-usb-host.c
> @@ -384,7 +384,7 @@ static void omap_usbhs_init(struct device *dev)
>  			reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
>  
>  		/* Bypass the TLL module for PHY mode operation */
> -		if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
> +		if (pdata->single_ulpi_bypass) {
>  			dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
>  			if (is_ehci_phy_mode(pdata->port_mode[0]) ||
>  				is_ehci_phy_mode(pdata->port_mode[1]) ||
> diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h
> index 8570bcf..ef65b67 100644
> --- a/include/linux/platform_data/usb-omap.h
> +++ b/include/linux/platform_data/usb-omap.h
> @@ -59,6 +59,9 @@ struct usbhs_omap_platform_data {
>  
>  	struct ehci_hcd_omap_platform_data	*ehci_data;
>  	struct ohci_hcd_omap_platform_data	*ohci_data;
> +
> +	/* OMAP3 <= ES2.1 have a single ulpi bypass control bit */
> +	unsigned				single_ulpi_bypass:1;
>  };
>  
>  /*-------------------------------------------------------------------------*/
> -- 
> 1.7.4.1
> 
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