linux-kernel - Re: [PATCH v7 1/2] ARM: davinci: dm365: add support for v4l2 video display

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Message-ID: <CA+V-a8u2CyV=VH6SBqK3=oTZoj2F1f+qQksD1ZyLP2V4pivOCg@mail.gmail.com>
Date:	Mon, 25 Mar 2013 16:11:58 +0530
From:	Prabhakar Lad <prabhakar.csengg@...il.com>
To:	Sekhar Nori <nsekhar@...com>
Cc:	DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
	LAK <linux-arm-kernel@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 1/2] ARM: davinci: dm365: add support for v4l2 video display

Hi Sekhar,

On Mon, Mar 25, 2013 at 3:57 PM, Sekhar Nori <nsekhar@...com> wrote:
> On 3/25/2013 3:52 PM, Prabhakar Lad wrote:
>> Hi Sekhar,
>>
>> Thanks for the review!
>>
>> On Mon, Mar 25, 2013 at 11:42 AM, Sekhar Nori <nsekhar@...com> wrote:
>>> Prabhakar,
>>>
>>> On 3/22/2013 1:33 PM, Prabhakar lad wrote:
>>>> From: Lad, Prabhakar <prabhakar.csengg@...il.com>
>>>>
>>>> Create platform devices for various video modules like venc,osd,
>>>> vpbe and v4l2 driver for dm365.
>>>>
>>>> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
>>>> ---
>>>>  arch/arm/mach-davinci/board-dm365-evm.c |    4 +-
>>>>  arch/arm/mach-davinci/davinci.h         |    2 +-
>>>>  arch/arm/mach-davinci/dm365.c           |  194 +++++++++++++++++++++++++++++--
>>>>  3 files changed, 188 insertions(+), 12 deletions(-)
>>>>
>>>> diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
>>>> index c2d4958..cf77c46 100644
>>>> --- a/arch/arm/mach-davinci/board-dm365-evm.c
>>>> +++ b/arch/arm/mach-davinci/board-dm365-evm.c
>>>> @@ -564,8 +564,6 @@ static struct davinci_uart_config uart_config __initdata = {
>>>>
>>>>  static void __init dm365_evm_map_io(void)
>>>>  {
>>>> -     /* setup input configuration for VPFE input devices */
>>>> -     dm365_set_vpfe_config(&vpfe_cfg);
>>>>       dm365_init();
>>>>  }
>>>>
>>>> @@ -597,6 +595,8 @@ static __init void dm365_evm_init(void)
>>>>
>>>>       davinci_setup_mmc(0, &dm365evm_mmc_config);
>>>>
>>>> +     dm365_init_video(&vpfe_cfg, NULL);
>>>> +
>>>>       /* maybe setup mmc1/etc ... _after_ mmc0 */
>>>>       evm_init_cpld();
>>>>
>>>> diff --git a/arch/arm/mach-davinci/davinci.h b/arch/arm/mach-davinci/davinci.h
>>>> index 12d544b..1c2670f 100644
>>>> --- a/arch/arm/mach-davinci/davinci.h
>>>> +++ b/arch/arm/mach-davinci/davinci.h
>>>> @@ -84,7 +84,7 @@ void __init dm365_init_ks(struct davinci_ks_platform_data *pdata);
>>>>  void __init dm365_init_rtc(void);
>>>>  void dm365_init_spi0(unsigned chipselect_mask,
>>>>                       const struct spi_board_info *info, unsigned len);
>>>> -void dm365_set_vpfe_config(struct vpfe_config *cfg);
>>>> +int __init dm365_init_video(struct vpfe_config *, struct vpbe_config *);
>>>
>>> No need of __init specifier in function declaration.
>>>
>> OK
>>
>>>>
>>>>  /* DM644x function declarations */
>>>>  void __init dm644x_init(void);
>>>> diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
>>>> index f4c19f7..0a2dba2 100644
>>>> --- a/arch/arm/mach-davinci/dm365.c
>>>> +++ b/arch/arm/mach-davinci/dm365.c
>>>> @@ -40,10 +40,16 @@
>>>>
>>>>  #define DM365_REF_FREQ               24000000        /* 24 MHz on the DM365 EVM */
>>>>
>>>> +#define DM365_VDAC_CONFIG            0x01c4002c
>>>
>>> Please define this in davinci.h as an offset from
>>> DAVINCI_SYSTEM_MODULE_BASE.
>>>
>> OK
>>
>>>> +
>>>> +#define DM365_RTC_BASE                       0x01c69000
>>>> +
>>>>  /* Base of key scan register bank */
>>>>  #define DM365_KEYSCAN_BASE           0x01c69400
>>>>
>>>> -#define DM365_RTC_BASE                       0x01c69000
>>>> +#define DM365_OSD_BASE                       0x01c71c00
>>>> +
>>>> +#define DM365_VENC_BASE                      0x01c71e00
>>>>
>> Are you OK with this definitions or you want all of them in davinci.h ?
>
> No please leave these here. The reason I asked you to use davinci.h for
> SYSMOD is because I don't want those definitions to be strewn all over
> the place - especially when there is already a consolidated place for them.
>
OK, that clears my doubt!

Regards,
--Prabhakar

> Thanks,
> Sekhar
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