linux-kernel - Re: [PATCH v2] media: i2c: Add OV05C10 camera sensor driver

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Message-ID: <aBm-FEdHqERKj9Am@kekkonen.localdomain>
Date: Tue, 6 May 2025 07:45:24 +0000
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: "Nirujogi, Pratap" <pnirujog@....com>,
	Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
	Pratap Nirujogi <pratap.nirujogi@....com>, mchehab@...nel.org,
	hverkuil@...all.nl, dave.stevenson@...pberrypi.com, krzk@...nel.org,
	dan.carpenter@...aro.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org, benjamin.chan@....com, bin.du@....com,
	grosikop@....com, king.li@....com, dantony@....com,
	Venkata Narendra Kumar Gutta <vengutta@....com>
Subject: Re: [PATCH v2] media: i2c: Add OV05C10 camera sensor driver

Hi Laurent,

On Wed, Apr 02, 2025 at 04:20:52AM +0300, Laurent Pinchart wrote:
> On Mon, Mar 31, 2025 at 03:17:22PM -0400, Nirujogi, Pratap wrote:
> > On 3/28/2025 9:18 PM, Bryan O'Donoghue wrote:
> > > On 28/03/2025 21:42, Pratap Nirujogi wrote:
> > >> From: Bin Du <Bin.Du@....com>
> > > 
> > >> +static const struct i2c_device_id ov05c10_id[] = {
> > >> +     {"ov05c10", 0 },
> > >> +     { }
> > >> +};
> > > 
> > > There's an IPU6/IPU7 version of this driver.
> > > 
> > > https://github.com/intel/ipu6-drivers/blob/master/drivers/media/i2c/ 
> > > ov05c10.c
> > > 
> > > Perhaps you could import the Intel ACPI name contained in there too.
> > > 
> > sure, will add Intel ACPI names too in V3. To be specific, I'm going to 
> > add the below table in addition to the existing "struct i2c_device_id 
> > ov05c10_id[]" table:
> > 
> > static const struct acpi_device_id ov05c10_acpi_ids[] = {
> > 	{ "OVTI05C1" },
> > 	{}
> > };
> 
> You could drop the i2c_device_id table if you added an OF device ID
> table, but you'll need DT bindings for that. Sakari, any best practice
> rule in this area ?

I don't think there should be a need for an I²C ID in any case, having just
ACPI _HID is fine.

DT bindings would of course be a plus.

> 
> > >> +
> > >> +MODULE_DEVICE_TABLE(i2c, ov05c10_id);
> > >> +
> > >> +static struct i2c_driver ov05c10_i2c_driver = {
> > >> +     .driver = {
> > >> +             .name = DRV_NAME,
> > >> +             .pm = pm_ptr(&ov05c10_pm_ops),
> > >> +     },
> > >> +     .id_table = ov05c10_id,
> > >> +     .probe = ov05c10_probe,
> > >> +     .remove = ov05c10_remove,
> > >> +};
> > >> +
> > >> +module_i2c_driver(ov05c10_i2c_driver);
> > >> +
> > >> +MODULE_AUTHOR("Pratap Nirujogi <pratap.nirujogi@....com>");
> > >> +MODULE_AUTHOR("Venkata Narendra Kumar Gutta <vengutta@....com>");
> > >> +MODULE_AUTHOR("Bin Du <bin.du@....com>");
> > >> +MODULE_DESCRIPTION("OmniVision OV05C1010 sensor driver");
> > >> +MODULE_LICENSE("GPL v2");
> > > 
> > > Why v2 ? Checkpatch will complain about v2 and BTW the IPU6 driver above
> > > is GPL not GPL v2.
> > 
> > sure, will replace "GPL v2" with "GPL" in V3.
> 

-- 
Regards,

Sakari Ailus