On Wednesday, November 26, 2014 10:44:34 AM Aaron Lu wrote: > On 11/26/2014 10:35 AM, Aaron Lu wrote: > > On 11/26/2014 04:41 AM, Rafael J. Wysocki wrote: > >> On Tuesday, November 25, 2014 07:52:31 PM Aaron Lu wrote: > >>> On 11/25/2014 09:47 AM, Rafael J. Wysocki wrote: > >>>> On Friday, November 21, 2014 03:11:48 PM Aaron Lu wrote: > >>>>> v3: > >>>>> Only some function/variable name changes, no functiona changes: > >>>>> - Replace the dptf/DPTF word originate from the BIOS ACPI table with more > >>>>> meaningful word thermal/THERMAL in all places; > >>>>> - Eliminate the soc part in various structure and function names to make > >>>>> them shorter: > >>>>> intel_soc_pmic_opregion -> intel_pmic_opregion > >>>>> intel_soc_pmic_pmop_handler -> intel_pmic_pmop_handler > >>>>> intel_soc_pmic_install_opregion_handler -> intel_pmic_install_opregion_handler > >>>>> etc. > >>>>> > >>>>> > >>>>> v2: > >>>>> Place PMIC operation files under drivers/acpi/pmic instead of > >>>>> drivers/acpi/pmic_opregion as suggested by Rafael; > >>>>> Rename PMIC operation files to make them shorter as suggested by Rafael. > >>>>> > >>>>> v1: > >>>>> On Intel Baytrail-T and Baytrail-T-CR platforms, there are two customized > >>>>> ACPI operation regions defined for the Power Management Integrated Circuit > >>>>> device, one is for power resource handling and one is for thermal: sensor > >>>>> temperature reporting, trip point setting, etc. There are different PMIC > >>>>> chips used on those platforms and though each has the same two operation > >>>>> regions and functionality, their implementation is different so every PMIC > >>>>> will need a driver. But since their functionality is similar, some common > >>>>> code is abstracted into the intel_soc_pmic_opregion.c. > >>>>> > >>>>> The last version is posted here: > >>>>> https://lkml.org/lkml/2014/9/8/801 > >>>>> > >>>>> Changes since then: > >>>>> 1 Move to drivers/acpi as discussed on the above thread; > >>>>> 2 Added support for XPower AXP288 PMIC operation region support; > >>>>> 3 Since operation region handler can not be removed(at the moment at least), > >>>>> use bool for the two operation region driver configs instead of tristate; > >>>>> Another reason to do this is that, with Mika's MFD ACPI support patch, all > >>>>> those MFD cell devices created will have the same modalias as their parent's > >>>>> so it doesn't make much sense to compile these drivers into modules. > >>>>> > >>>>> Patch 1 applies on top of Rafael's pm-next branch, and then patch 2 and > >>>>> patch 3 needs merge of Lee's mfd/ib-mfd-iio-3.19 branch where the PMIC > >>>>> driver XPower AXP288 and iio driver axp288_adc is located. > >>>>> > >>>>> > >>>>> Aaron Lu (3): > >>>>> ACPI / PMIC: support PMIC operation region for CrystalCove > >>>>> ACPI / PMIC: support PMIC operation region for XPower AXP288 > >>>>> ACPI / PMIC: AXP288: support virtual GPIO in ACPI table > >>>> > >>>> OK > >>>> > >>>> I've pulled the Lee's 'mfd/ib-mfd-iio-3.19' branch and applied your updated > >>>> three on top of that. Please check the bleeding-edge branch of linux-pm.git > >>>> for the result. > >>> > >>> Thanks, and a fix patch is here: > >>> > >>> From: Aaron Lu <aaron.lu@xxxxxxxxx> > >>> Date: Tue, 25 Nov 2014 14:35:38 +0800 > >>> Subject: [PATCH] ACPI / PMIC: Make it possible to build PMIC driver as a module > >>> > >>> This can solve a problem that when axp288_adc driver is built as a > >>> module and the PMIC driver is builtin, following error would ocur: > >> > >> I would prefer that to be sloved by requiring axp288_adc to be built in > >> if the PMIC stuff is selected. Otherwise we may need to deal with some > >> nasty module load ordering dependencies. > > > > Good point, and I saw you have solved this problem in the bleeding-edge > > branch, thanks! No problem, I can fix up things like that occasionally. > >> > >>> drivers/built-in.o: In function `intel_xpower_pmic_get_raw_temp': > >>> intel_pmic_xpower.c:(.text+0xdfaa7): undefined reference to `iio_channel_get' > >>> intel_pmic_xpower.c:(.text+0xdfb24): undefined reference to `iio_read_channel_raw' > >>> intel_pmic_xpower.c:(.text+0xdfb4e): undefined reference to `iio_channel_release' > >>> > >>> Also, with the fix commit: 52870786ff5d ("ACPI: Use ACPI companion to > >>> match only the first physical device"), the MFD cell device will have > >>> its own platform modalias instead of its parent's ACPI modalias, this > >>> made it possible for the module to be autoloaded. > >>> > >>> Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> > >>> Signed-off-by: Aaron Lu <aaron.lu@xxxxxxxxx> > >>> --- > >>> drivers/acpi/Kconfig | 6 +++--- > >>> drivers/acpi/pmic/intel_pmic_crc.c | 12 +++++++++++- > >>> drivers/acpi/pmic/intel_pmic_xpower.c | 12 +++++++++++- > >>> 3 files changed, 25 insertions(+), 5 deletions(-) > >>> > >>> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig > >>> index 227f0692cbff..f9459ba4ce59 100644 > >>> --- a/drivers/acpi/Kconfig > >>> +++ b/drivers/acpi/Kconfig > >>> @@ -394,7 +394,7 @@ config ACPI_EXTLOG > >>> tracepoint which carries that information to userspace. > >>> > >>> menuconfig PMIC_OPREGION > >>> - bool "PMIC (Power Management Integrated Circuit) operation region support" > >>> + tristate "PMIC (Power Management Integrated Circuit) operation region support" > >>> help > >>> Select this option to enable support for ACPI operation > >>> region of the PMIC chip. The operation region can be used > >>> @@ -403,13 +403,13 @@ menuconfig PMIC_OPREGION > >>> > >>> if PMIC_OPREGION > >>> config CRC_PMIC_OPREGION > >>> - bool "ACPI operation region support for CrystalCove PMIC" > >>> + tristate "ACPI operation region support for CrystalCove PMIC" > >>> depends on INTEL_SOC_PMIC > >>> help > >>> This config adds ACPI operation region support for CrystalCove PMIC. > >>> > >>> config XPOWER_PMIC_OPREGION > >>> - bool "ACPI operation region support for XPower AXP288 PMIC" > >>> + tristate "ACPI operation region support for XPower AXP288 PMIC" > >>> depends on AXP288_ADC > >>> help > >>> This config adds ACPI operation region support for XPower AXP288 PMIC. > >>> diff --git a/drivers/acpi/pmic/intel_pmic_crc.c b/drivers/acpi/pmic/intel_pmic_crc.c > >>> index 8955e5b41195..8a193381b5ee 100644 > >>> --- a/drivers/acpi/pmic/intel_pmic_crc.c > >>> +++ b/drivers/acpi/pmic/intel_pmic_crc.c > >>> @@ -194,13 +194,23 @@ static int intel_crc_pmic_opregion_probe(struct platform_device *pdev) > >>> &intel_crc_pmic_opregion_data); > >>> } > >>> > >>> +#define DRV_NAME "crystal_cove_region" > >> > >> This name is just horrible, BTW. > > > > Heh. I tried to follow the pattern in CrystalCove's MFD driver, where > > all its cell devices are named crystal_cove_XXX, and since the platform > > bus' match is done by comparing the device's name and the name field of > > the driver's id table entry, they have to be the same. So I called this one "crystal_cove_pmic" and the other one "axp288_pmic_acpi". > The problem is, > > the name field of the platform_device_id structure has a size limit of > > 20, I can't even put the 'op' before the 'region' there. Perhaps time to > > enlarge that size limit? > > Or we can simply use 'acpi' instead of 'region' or 'opregion' here, to > mean that this cell device is for ACPI purpose. How does this sound? Better, but see above. -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
