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SubjectRe: [PATCH v5 0/8] mfd: introduce a driver for LPSS devices on SPT
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On Mon, 2015-07-06 at 15:22 +0300, Andy Shevchenko wrote:
> The new coming Intel platforms such as Skylake will contain
> Sunrisepoint PCH.
>
> The driver is based on MFD framework since the main device, i.e.
> serial bus
> controller, contains register space for itself, DMA part, and an
> additional
> address space (convergence layer).
>
> The public specification of the register map is avaiable in [1].
>
> This is fifth generation of the patch series to bring support LPSS
> devices
> found on Intel Sunrisepoint (Intel Skylake PCH). Previous one can be
> found here
> [2].
>
> The series has few logical parts:
> - patches 1-3 prepares PM core, ACPI, and driver core (PM) to handle
> our case
> - patches 4-6 introduce unregistering platform devices in MFD in
> reversed
> order
> - patch 7 implements iDMA 64-bit driver
> - patch 8 introduces an MFD driver for LPSS devices
>
> The patch 7 can be applied independently, though it's better if it
> goes before
> patch 8.
>
> The driver has been tested with SPI and UART on Intel Skylake PCH.
>
> [1] https://download.01.org/future-platform-configuration
> -hub/skylake/register-definitions/332219-002.pdf
> [2] http://www.spinics.net/lists/linux-acpi/msg58622.html

Gentle ping on this.

Vinod, can you Ack the DMA driver?

>
> Changelog v5:
> - rebase on top of v4.2-rc1
> - patch 3 is modified accordingly to new changes in
> drivers/base/dd.c
> - correct Rafael's email in patch 3
>
> Changelog v4:
> - replace patch 3 by Rafael's suggession
> - append ACKs from Rafael
> - rebase on top of v4.1-rc8
>
> Changelog v3:
> - rework patch 3 to be used for all kind of devices (address Alan
> comment)
> - iDMA 64-bit driver improvements:
> - fix burst-to-register conversion
> - remove excessive locking
> - do not expose core part to the user (Kconfig)
> - address most of Lee's comments
> - append ACKs
> - rebase on top of v4.1-rc6
>
> Changelog v2:
> - new DMA driver to fully support iDMA 64-bit IP
> - patch 3 is added to wake up parent devices when ->probe(),
> ->remove(), or
> ->shutdown()
> - MFD core is unregistering devices in reversed order
> - address few Lee's comments on v1
> - address Russel's comment, therefore use clkdev_create() helper
> - intel-lpss{,-acpi,-pci} are modified regarding to above changes
>
> Andy Shevchenko (5):
> klist: implement klist_prev()
> driver core: implement device_for_each_child_reverse()
> mfd: make mfd_remove_devices() iterate in reverse order
> dmaengine: add a driver for Intel integrated DMA 64-bit
> mfd: Add support for Intel Sunrisepoint LPSS devices
>
> Mika Westerberg (2):
> PM / QoS: Make it possible to expose device latency tolerance to
> userspace
> ACPI / PM: Attach ACPI power domain only once
>
> Rafael J. Wysocki (1):
> Driver core: wakeup the parent device before trying probe
>
> drivers/acpi/device_pm.c | 8 +
> drivers/acpi/internal.h | 2 +
> drivers/acpi/scan.c | 46 ++-
> drivers/base/core.c | 43 +++
> drivers/base/dd.c | 20 ++
> drivers/base/power/power.h | 2 +
> drivers/base/power/qos.c | 37 +++
> drivers/base/power/sysfs.c | 11 +
> drivers/dma/Kconfig | 5 +
> drivers/dma/Makefile | 1 +
> drivers/dma/idma64.c | 724
> ++++++++++++++++++++++++++++++++++++++++++
> drivers/dma/idma64.h | 232 ++++++++++++++
> drivers/mfd/Kconfig | 23 ++
> drivers/mfd/Makefile | 3 +
> drivers/mfd/intel-lpss-acpi.c | 84 +++++
> drivers/mfd/intel-lpss-pci.c | 113 +++++++
> drivers/mfd/intel-lpss.c | 524 ++++++++++++++++++++++++++++++
> drivers/mfd/intel-lpss.h | 62 ++++
> drivers/mfd/mfd-core.c | 2 +-
> include/linux/device.h | 2 +
> include/linux/klist.h | 1 +
> include/linux/pm_qos.h | 5 +
> lib/klist.c | 41 +++
> 23 files changed, 1974 insertions(+), 17 deletions(-)
> create mode 100644 drivers/dma/idma64.c
> create mode 100644 drivers/dma/idma64.h
> create mode 100644 drivers/mfd/intel-lpss-acpi.c
> create mode 100644 drivers/mfd/intel-lpss-pci.c
> create mode 100644 drivers/mfd/intel-lpss.c
> create mode 100644 drivers/mfd/intel-lpss.h
>

--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy


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