linux-kernel - Re: [PATCH 4/6] usb: dwc3-omap: Add an API to write to dwc mailbox

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Date:	Fri, 28 Sep 2012 19:01:48 +0530
From:	"ABRAHAM, KISHON VIJAY" <kishon@...com>
To:	balbi@...com
Cc:	grant.likely@...retlab.ca, rob.herring@...xeda.com,
	rob@...dley.net, linux-usb@...r.kernel.org,
	linux-omap@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, gregkh@...uxfoundation.org
Subject: Re: [PATCH 4/6] usb: dwc3-omap: Add an API to write to dwc mailbox

Hi,

On Fri, Sep 28, 2012 at 6:29 PM, Felipe Balbi <balbi@...com> wrote:
> Hi,
>
> On Fri, Sep 28, 2012 at 06:23:13PM +0530, Kishon Vijay Abraham I wrote:
>> Add an API in the omap glue layer to write to the mailbox register which
>> can be used by comparator driver(twl). To pass the detection of the attached
>> device (signified by VBUS, ID) to the dwc3 core, dwc3 core has to write
>> to the mailbox regiter.
>>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
>> ---
>>  drivers/usb/dwc3/dwc3-omap.c  |   59 +++++++++++++++++++++++++++++++++++++++++
>>  include/linux/usb/dwc3-omap.h |   30 +++++++++++++++++++++
>>  2 files changed, 89 insertions(+)
>>  create mode 100644 include/linux/usb/dwc3-omap.h
>>
>> diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
>> index a1704c6..7ae4d73 100644
>> --- a/drivers/usb/dwc3/dwc3-omap.c
>> +++ b/drivers/usb/dwc3/dwc3-omap.c
>> @@ -43,6 +43,7 @@
>>  #include <linux/spinlock.h>
>>  #include <linux/platform_device.h>
>>  #include <linux/platform_data/dwc3-omap.h>
>> +#include <linux/usb/dwc3-omap.h>
>>  #include <linux/pm_runtime.h>
>>  #include <linux/dma-mapping.h>
>>  #include <linux/ioport.h>
>> @@ -126,6 +127,8 @@ struct dwc3_omap {
>>       u32                     dma_status:1;
>>  };
>>
>> +struct dwc3_omap             *_omap;
>> +
>>  static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
>>  {
>>       return readl(base + offset);
>> @@ -136,6 +139,56 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
>>       writel(value, base + offset);
>>  }
>>
>> +void omap_dwc3_mailbox(enum omap_dwc3_vbus_id_status status)
>
> all other functions are "dwc3_omap_", let's keep it consistent.

Sure.

Thanks
Kishon
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