lkml.org 
[lkml]   [2013]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[PATCH 00/11] spi/pxa2xx: add Intel Lynxpoint SPI controller support
    Date
    Hi all,

    On Intel Lynxpoint (the PCH used with Haswell) we have two SPI controllers
    that reside in the Low Power Subsystem of the PCH. The hardware is mostly
    compliant with PXA2xx SPI controller except that there are few additional
    registers. Those are described in patch [10/11].

    The patches [1-6/11] implement the foundation:

    * allow building the driver on 64-bit kernel
    * allow passing the ssp_device from platform data
    * allow passing clock rate from platform data on arches that don't
    support common clk framework like x86
    * separate the PXA private DMA implementation out

    The following patches [7-11/11] then build on top of this foundation so
    that we support the generic DMA engine API, runtime power management, and
    finally the Intel Lynxpoint SPI controller that is discoverable from ACPI
    namespace.

    Tested with DMA and PIO modes on Haswell/Lynxpoint machine.

    This shouldn't break anything but I haven't been able to test on PXA (due
    to lack of hardware) so I would appreciate if someone who has the hardware
    could try them out.

    Note that checkpatch.pl gives few warnings about using CamelCase for
    identifiers but I decided to be consistent with the original style instead.
    Let me know if it is not acceptable and I'll change them.

    The series is based on 3.8-rc2.

    Mika Westerberg (11):
    spi/pxa2xx: allow building on a 64-bit kernel
    spi/pxa2xx: convert to the pump message infrastructure
    spi/pxa2xx-pci: switch to use pcim_* interfaces
    spi/pxa2xx: embed the ssp_device to platform data
    spi/pxa2xx: make clock rate configurable from platform data
    spi/pxa2xx: use the private DMA API only when CONFIG_ARCH_PXA is set
    spi/pxa2xx: add support for DMA engine
    spi/pxa2xx: add support for runtime PM
    spi/pxa2xx: add support for SPI_LOOP
    spi/pxa2xx: add support for Intel Low Power Subsystem SPI
    spi/pxa2xx: add support for Lynxpoint SPI controllers

    drivers/spi/Kconfig | 4 +-
    drivers/spi/spi-pxa2xx-pci.c | 134 +---
    drivers/spi/spi-pxa2xx.c | 1516 +++++++++++++++++++++++++++-------------
    include/linux/pxa2xx_ssp.h | 18 +
    include/linux/spi/pxa2xx_spi.h | 109 +--
    5 files changed, 1103 insertions(+), 678 deletions(-)

    --
    1.7.10.4



    \
     
     \ /
      Last update: 2013-01-07 12:21    [W:4.194 / U:0.076 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site