Hi all,
This is third iteration of the patches. The second version is available
here:
http://lkml.org/lkml/2013/1/21/108
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 [9/10].
Changes to v2:
- Added parens to IS_DMA_ALIGNED(x) parameter.
- Prefix the DMA function names with pxa2xx_spi_ so that we don't
pollute the global kernel namespace with too generic symbols.
- By default select the DMA engine API support even on PXA and
treat the PXA private DMA API as legacy. It can still be selected
via Kconfig option CONFIG_SPI_PXA2XX_PXADMA.
- Update patch [5/10] title to match better what it does.
Changes to v1:
- Split 64-bit build support and warnings fix into separate patches
[1,2/10].
- Convert to use common clk API instead of passing the clock rate
via custom platform data parameter.
- Split the DMA implementation into a separate files for PXA and
DMA engine.
I've dropped the two patches that are already applied in Mark's SPI tree.
Tested on Haswell machine with both DMA and PIO modes. Only compile tested
on PXA (due to lack of hardware).
Mika Westerberg (10):
spi/pxa2xx: allow building on a 64-bit kernel
spi/pxa2xx: fix warnings when compiling a 64-bit kernel
spi/pxa2xx: convert to the pump message infrastructure
spi/pxa2xx: convert to the common clk framework
spi/pxa2xx: break out the private DMA API usage into a separate file
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 | 15 +-
drivers/spi/Makefile | 5 +-
drivers/spi/spi-pxa2xx-dma.c | 392 ++++++++++++++
drivers/spi/spi-pxa2xx-pxadma.c | 490 ++++++++++++++++++
drivers/spi/spi-pxa2xx.c | 1092 ++++++++++++---------------------------
drivers/spi/spi-pxa2xx.h | 221 ++++++++
include/linux/pxa2xx_ssp.h | 9 +
include/linux/spi/pxa2xx_spi.h | 105 +---
8 files changed, 1469 insertions(+), 860 deletions(-)
create mode 100644 drivers/spi/spi-pxa2xx-dma.c
create mode 100644 drivers/spi/spi-pxa2xx-pxadma.c
create mode 100644 drivers/spi/spi-pxa2xx.h
--
1.7.10.4
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