From: Lee Jones <lee.jones@linaro.org>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Darren Hart <dvhart@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Zha Qipeng <qipeng.zha@intel.com>,
"David E . Box" <david.e.box@linux.intel.com>,
Guenter Roeck <linux@roeck-us.net>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
platform-driver-x86@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 35/36] platform/x86: intel_pmc_ipc: Convert to MFD
Date: Mon, 20 Jan 2020 08:12:46 +0000 [thread overview]
Message-ID: <20200120081246.GS15507@dell> (raw)
In-Reply-To: <20200117142750.GP2838@lahna.fi.intel.com>
On Fri, 17 Jan 2020, Mika Westerberg wrote:
> On Fri, Jan 17, 2020 at 11:32:02AM +0000, Lee Jones wrote:
> > On Thu, 16 Jan 2020, Mika Westerberg wrote:
> > > On Thu, Jan 16, 2020 at 01:21:08PM +0000, Lee Jones wrote:
> > > > On Mon, 13 Jan 2020, Mika Westerberg wrote:
> > > >
> > > > > This driver only creates a bunch of platform devices sharing resources
> > > > > belonging to the PMC device. This is pretty much what MFD subsystem is
> > > > > for so move the driver there, renaming it to intel_pmc_bxt.c which
> > > > > should be more clear what it is.
> > > > >
> > > > > MFD subsystem provides nice helper APIs for subdevice creation so
> > > > > convert the driver to use those. Unfortunately the ACPI device includes
> > > > > separate resources for most of the subdevices so we cannot simply call
> > > > > mfd_add_devices() to create all of them but instead we need to call it
> > > > > separately for each device.
> > > > >
> > > > > Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> > > > > Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > > > > ---
> > > > > drivers/mfd/Kconfig | 16 +-
> > > > > drivers/mfd/Makefile | 1 +
> > > > > drivers/mfd/intel_pmc_bxt.c | 543 +++++++++++++++
> > > > > drivers/platform/x86/Kconfig | 16 +-
> > > > > drivers/platform/x86/Makefile | 1 -
> > > > > drivers/platform/x86/intel_pmc_ipc.c | 650 ------------------
> > > > > .../platform/x86/intel_telemetry_debugfs.c | 2 +-
> > > > > drivers/usb/typec/tcpm/Kconfig | 2 +-
> > > > > .../linux/mfd/intel_pmc_bxt.h | 11 +-
> > > > > 9 files changed, 573 insertions(+), 669 deletions(-)
> > > > > create mode 100644 drivers/mfd/intel_pmc_bxt.c
> > > > > delete mode 100644 drivers/platform/x86/intel_pmc_ipc.c
> > > > > rename arch/x86/include/asm/intel_pmc_ipc.h => include/linux/mfd/intel_pmc_bxt.h (83%)
[...]
> > > > > + scu = intel_scu_ipc_probe(&pdev->dev, &pdata);
> > > >
> > > > This is a parent or child device?
> > >
> > > The SCU IPC is a library so here it is just the device that has the SCU
> > > IPC registers the library can use.
> >
> > "probing" a library doesn't sound right.
> >
> > Looking at the code, I think this should be a device.
>
> Well, by "library" I mean that the SCU IPC itself does not bind to
> anything but instead it gets called by different drivers such as this
> one passing the device pointer that is the SCU IPC device. Here for
> example it is the platfrom device created from an ACPI description.
Not keen on that at all. Why can it not be a platform device?
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2020-01-20 8:12 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-13 13:55 [PATCH v3 00/36] platform/x86: Rework intel_scu_ipc and intel_pmc_ipc drivers Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 01/36] platform/x86: intel_mid_powerbtn: Take a copy of ddata Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 02/36] platform/x86: intel_scu_ipcutil: Remove default y from Kconfig Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 03/36] platform/x86: intel_scu_ipc: Add constants for register offsets Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 04/36] platform/x86: intel_scu_ipc: Remove Lincroft support Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 05/36] platform/x86: intel_scu_ipc: Drop intel_scu_ipc_i2c_cntrl() Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 06/36] platform/x86: intel_scu_ipc: Fix interrupt support Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 07/36] platform/x86: intel_scu_ipc: Sleeping is fine when polling Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 08/36] platform/x86: intel_scu_ipc: Drop unused prototype intel_scu_ipc_fw_update() Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 09/36] platform/x86: intel_scu_ipc: Drop unused macros Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 10/36] platform/x86: intel_scu_ipc: Drop intel_scu_ipc_io[read|write][8|16]() Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 11/36] platform/x86: intel_scu_ipc: Drop intel_scu_ipc_raw_command() Mika Westerberg
2020-01-13 13:55 ` [PATCH v3 12/36] platform/x86: intel_scu_ipc: Split out SCU IPC functionality from the SCU driver Mika Westerberg
2020-01-15 8:35 ` Lee Jones
2020-01-13 13:56 ` [PATCH v3 13/36] platform/x86: intel_scu_ipc: Reformat kernel-doc comments of exported functions Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 14/36] platform/x86: intel_scu_ipc: Introduce new SCU IPC API Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 15/36] platform/x86: intel_mid_powerbtn: Convert to use " Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 16/36] watchdog: intel-mid_wdt: " Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 17/36] platform/x86: intel_scu_ipcutil: " Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 18/36] platform/x86: intel_pmc_ipc: Make intel_pmc_gcr_update() static Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 19/36] platform/x86: intel_pmc_ipc: Make intel_pmc_ipc_simple_command() static Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 20/36] platform/x86: intel_pmc_ipc: Make intel_pmc_ipc_raw_cmd() static Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 21/36] platform/x86: intel_pmc_ipc: Drop intel_pmc_gcr_read() and intel_pmc_gcr_write() Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 22/36] platform/x86: intel_pmc_ipc: Drop ipc_data_readb() Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 23/36] platform/x86: intel_pmc_ipc: Get rid of unnecessary includes Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 24/36] platform/x86: intel_scu_ipc: Add function to remove SCU IPC Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 25/36] platform/x86: intel_pmc_ipc: Start using " Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 26/36] mfd: intel_soc_pmic: Add SCU IPC member to struct intel_soc_pmic Mika Westerberg
2020-01-15 8:44 ` Lee Jones
2020-01-15 8:58 ` Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 27/36] mfd: intel_soc_pmic_bxtwc: Convert to use new SCU IPC API Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 28/36] mfd: intel_soc_pmic_mrfld: " Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 29/36] platform/x86: intel_telemetry: " Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 30/36] platform/x86: intel_pmc_ipc: Drop intel_pmc_ipc_command() Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 31/36] x86/platform/intel-mid: Add empty stubs for intel_scu_devices_[create|destroy]() Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 32/36] platform/x86: intel_pmc_ipc: Move PCI IDs to intel_scu_pcidrv.c Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 33/36] platform/x86: intel_pmc_ipc: Use octal permissions in sysfs attributes Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 34/36] platform/x86: intel_pmc_ipc: Switch to use driver->dev_groups Mika Westerberg
2020-01-13 13:56 ` [PATCH v3 35/36] platform/x86: intel_pmc_ipc: Convert to MFD Mika Westerberg
2020-01-16 13:21 ` Lee Jones
2020-01-16 14:37 ` Mika Westerberg
2020-01-17 11:32 ` Lee Jones
2020-01-17 14:27 ` Mika Westerberg
2020-01-20 8:12 ` Lee Jones [this message]
2020-01-20 9:12 ` Mika Westerberg
2020-01-20 11:14 ` Lee Jones
2020-01-20 11:26 ` Mika Westerberg
2020-01-20 12:50 ` Lee Jones
2020-01-20 13:07 ` Mika Westerberg
2020-01-20 9:26 ` Mika Westerberg
2020-01-20 11:11 ` Lee Jones
2020-01-20 11:13 ` Lee Jones
2020-01-13 13:56 ` [PATCH v3 36/36] MAINTAINERS: Update entry for Intel Broxton PMC driver Mika Westerberg
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