Среда, 12 февраля 2014, 11:06 UTC от Pawel Moll <pawel.moll@xxxxxxx>: > On Wed, 2014-02-12 at 08:26 +0000, Lee Jones wrote: > > > > Use the device platform data as a regmap config > > > > name. This is particularly useful in the regmap > > > > debugfs when there is more than one syscon device > > > > registered, to distinguish the register blocks. > > > > > > > > Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx> > > > > Cc: Lee Jones <lee.jones@xxxxxxxxxx> > > > > Signed-off-by: Pawel Moll <pawel.moll@xxxxxxx> > > > > --- > > > ... > > > > syscon_regmap_config.max_register = res->end - res->start - 3; > > > > + syscon_regmap_config.name = dev_get_platdata(&pdev->dev); > > > > > > Is dev_name(&pdev->dev) can be used for such purpose? > > > > Yes of course. > > > > Either use the automatically generated name or over-ride with > > dev->init_name prior to registration or call dev_set_name() > > manually. Then retrieve with Alexander's suggestion. > > > > Is there any technical reason why this is not possible with your > > implementation? > > Hold on, guys. Let me just point out that we're talking "non-DT" > platform devices here (either statically defined struct > platform_device-s or - my case - the MFD cells). > > In this case device/driver matching relies completely on device name. > Either the pdev->name must be identical (strcmp) to pdrv->name, or the > pdev->name must be identical (strcmp again) to one of the pdev->id_table > entries. See platform_match() in driver/base/platform.c for more > details. > > Therefore the dev_name(&pdev->dev) on a non-DT-originating sysconf > devince will always return "sysconf.*", unless you're ready to maintain > a growing syscon_ids[] list. If so, I will have to add three entries > there ("sys_id", "sys_misc" and "sys_procid"). I hope you are not > seriously considering this idea :-) After all that's what the > platform_data was invented for. Yeah, I gave up the idea to use the syscon_ids[] to separate devices for non-DT case. https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/mfd/syscon.c?id=5104d2656d4874c51868dc7182016e9501ec99ca Instead, I use a hard definition for pdev->id, so that the names of syscon-devices are different and can be obtained from the driver it uses with syscon_regmap_lookup_by_pdevname(). I understand this topic correct? --- _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-arm-kernel