linux-stable.git/drivers/dma/dw, branch v3.12

Remove GENERIC_HARDIRQ config option

2013-09-13T13:09:52+00:00

After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.

Signed-off-by: Martin Schwidefsky

dma: dw: return DMA_PAUSED only if cookie status is DMA_IN_PROGRESS

2013-08-05T04:02:26+00:00

To obey a usual practice let's return DMA_PAUSED status only if
dma_cookie_status returned DMA_IN_PROGRESS.

Signed-off-by: Andy Shevchenko 
Signed-off-by: Vinod Koul

dma: dw: return DMA_SUCCESS immediately from device_tx_status()

2013-08-05T04:02:26+00:00

There is no point to go throught the rest of the function if first call to
dma_cookie_status() returned DMA_SUCCESS.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dma: dw: allow shared interrupts

2013-08-05T04:02:26+00:00

In the PC world is quite possible that devices are sharing the same interrupt
line. The patch prepares dw_dmac driver to such cases.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dma: dw: improve comparison with ~0

2013-08-05T04:02:26+00:00

In general ~0 does not fit some integer types. Let's do a helper to make a
comparison with that constant properly.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dma: dw: append MODULE_DEVICE_TABLE for ACPI case

2013-08-05T04:02:26+00:00

In rare cases (mostly for the testing purposes) the dw_dmac driver might be
compiled as a module as well as the other LPSS device drivers (I2C, SPI,
HSUART). When udev handles the event of the devices appearing the dw_dmac
module is missing. This patch will fix that.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dmaengine: dw: select DW_DMAC_BIG_ENDIAN_IO automagically

2013-07-05T06:10:46+00:00

Signed-off-by: Vinod Koul

dma: dw: add PCI part of the driver

2013-07-05T06:10:45+00:00

This is the PCI part of the DesignWare DMAC driver. The controller is usually
used in the Intel hardware such as Intel Medfield.

Signed-off-by: Andy Shevchenko 
Acked-by: Arnd Bergmann 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dma: dw: split driver to library part and platform code

2013-07-05T06:10:44+00:00

To simplify the driver development let's split driver to library and platform
code parts. It helps us to add PCI driver in future.

Signed-off-by: Andy Shevchenko 
Acked-by: Arnd Bergmann 
Acked-by: Viresh Kumar 
[Fixed compile error and few checkpatch issues]
Signed-off-by: Vinod Koul

dma: move dw_dmac driver to an own directory

2013-07-05T06:10:43+00:00

The dw_dmac driver is going to be split into multiple files. To make this more
convenient move it to an own directory.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Acked-by: Arnd Bergmann 
Signed-off-by: Vinod Koul