linux.git/drivers/dma/dw/platform.c, branch v5.5

dmaengine: dw: platform: Mark 'hclk' clock optional

2019-10-14T08:21:44+00:00

On some platforms the clock can be fixed rate, always running one and
there is no need to do anything with it.

In order to support those platforms, switch to use optional clock.

Fixes: f8d9ddbc2851 ("dmaengine: dw: platform: Enable iDMA 32-bit on Intel Elkhart Lake")
Depends-on: 60b8f0ddf1a9 ("clk: Add (devm_)clk_get_optional() functions")
Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Link: https://lore.kernel.org/r/20190924085116.83683-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Split OF helpers to separate module

2019-08-21T04:11:28+00:00

For better maintenance split OF helpers to the separate module.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-11-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Split ACPI helpers to separate module

2019-08-21T04:11:28+00:00

For better maintenance split ACPI helpers to the separate module.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-10-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Move handle check to dw_dma_acpi_controller_register()

2019-08-21T04:11:28+00:00

Move ACPI handle check to the dw_dma_acpi_controller_register().

While here, convert it to has_acpi_companion() which is recommended way.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-9-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Switch to acpi_dma_controller_register()

2019-08-21T04:11:28+00:00

There is a possibility to have registered ACPI DMA controller
while it has been gone already.

To avoid the potential crash, move to non-managed
acpi_dma_controller_register().

Fixes: 42c91ee71d6d ("dw_dmac: add ACPI support")
Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-8-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Use devm_platform_ioremap_resource()

2019-08-21T04:11:28+00:00

Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-7-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Enable iDMA 32-bit on Intel Elkhart Lake

2019-08-21T04:11:27+00:00

Intel® PSE (Programmable Services Engine) provides few DMA controllers
to the host on Intel Elkhart Lake. Enable them in the ACPI glue driver.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-6-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: platform: Use struct dw_dma_chip_pdata

2019-08-21T04:11:27+00:00

Now, when we have a generic structure for the chip and platform data,
use it in the platform glue driver.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20190820131546.75744-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul

dmaengine: dw: convert to SPDX identifiers

2019-01-07T12:27:13+00:00

This patch updates license to use SPDX-License-Identifier
instead of verbose license text.

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

dmaengine: dw: Split DW and iDMA 32-bit operations

2019-01-07T12:27:13+00:00

Here is a kinda big refactoring that should have been done
in the first place, when Intel iDMA 32-bit support appeared.

It splits operations which are different to Synopsys DesignWare and
Intel iDMA 32-bit controllers.

No functional change intended.

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