Merge branch 'pci/controller/dwc'

- Release previously-requested DW eDMA IRQs if request_irq() fails (Serge
  Semin)

- Convert DW eDMA linked-list (ll) and data target (dt) from CPU-relative
  addresses to PCI bus addresses (Serge Semin)

- Fix missing src/dst address for interleaved transfers (Serge Semin)

- Enforce the DW eDMA restriction that interleaved transfers must increment
  src and dst addresses (Serge Semin)

- Fix some invalid interleaved transfer semantics (Serge Semin)

- Convert CPU-relative addresses to PCI bus addresses for eDMA engine
  (Serge Semin)

- Drop chancnt initialization from dw-edma-core, since it is managed by the
  dmaengine core, e.g., in dma_async_device_channel_register() (Serge Semin)

- Clean up bogus casting of debugfs_entries.reg addresses (Serge Semin)

- Ignore debugfs file/directory creation errors (Serge Semin)

- Allocate debugfs entries from the heap to prepare for multi-eDMA
  platforms (Serge Semin)

- Simplify and rework register accessors to remove another obstacle to
  multi-eDMA platforms (Serge Semin)

- Consolidate eDMA read/write channels in a single dma_device to simplify,
  better reflect the hardware design, and avoid a debugfs complaint (Serge
  Semin)

- Move eDMA-specific debugfs nodes into existing dmaengine subdirectory
  (Serge Semin)

- Fix a readq_ch() truncation from 64 to 32 bits (Serge Semin)

- Use existing readq()/writeq rather than hand-coding new ones (Serge
  Semin)

- Drop unnecessary data target region allocation in favor of existing
  dw_edma_chip members (Serge Semin)

- Use parent device in eDMA controller name to prepare for multi-eDMA
  platforms (Serge Semin)

- In addition to the existing MMIO accessors for linked list entries, add
  support for ioremapped entries for use by eDMA in Root Ports or local
  Endpoints (Serge Semin)

- Convert DW_EDMA_PCIE so it depends on DW_EDMA instead of selecting it
  (Serge Semin)

- Allow DWC drivers to set streaming DMA masks larger than 32 bits;
  previously both streaming and coherent DMA were limited to 32 bits
  because some PCI devices only support coherent 32-bit DMA for MSI (Serge
  Semin)

- Set 64-bit streaming and coherent DMA mask for the bt1 driver (Serge
  Semin)

- Add DW Root Port and Endpoint controller support for eDMA (Serge Semin)

* pci/controller/dwc:
  PCI: dwc: Add Root Port and Endpoint controller eDMA engine support
  PCI: bt1: Set 64-bit DMA mask
  PCI: dwc: Restrict only coherent DMA mask for MSI address allocation
  dmaengine: dw-edma: Prepare dw_edma_probe() for builtin callers
  dmaengine: dw-edma: Depend on DW_EDMA instead of selecting it
  dmaengine: dw-edma: Add mem-mapped LL-entries support
  dmaengine: dw-edma: Skip cleanup procedure if no private data found
  dmaengine: dw-edma: Replace chip ID number with device name
  dmaengine: dw-edma: Drop DT-region allocation
  dmaengine: dw-edma: Use non-atomic io-64 methods
  dmaengine: dw-edma: Fix readq_ch() return value truncation
  dmaengine: dw-edma: Use DMA engine device debugfs subdirectory
  dmaengine: dw-edma: Join read/write channels into a single device
  dmaengine: dw-edma: Move eDMA data pointer to debugfs node descriptor
  dmaengine: dw-edma: Simplify debugfs context CSRs init procedure
  dmaengine: dw-edma: Rename debugfs dentry variables to 'dent'
  dmaengine: dw-edma: Convert debugfs descs to being heap-allocated
  dmaengine: dw-edma: Add dw_edma prefix to debugfs nodes descriptor
  dmaengine: dw-edma: Stop checking debugfs_create_*() return value
  dmaengine: dw-edma: Drop unnecessary debugfs reg casts
  dmaengine: dw-edma: Drop chancnt initialization
  dmaengine: dw-edma: Add PCI bus address getter to the remote EP glue driver
  dmaengine: dw-edma: Add CPU to PCI bus address translation
  dmaengine: dw-edma: Fix invalid interleaved xfers semantics
  dmaengine: dw-edma: Don't permit non-inc interleaved xfers
  dmaengine: dw-edma: Fix missing src/dst address of interleaved xfers
  dmaengine: dw-edma: Convert ll/dt phys address to PCI bus/DMA address
  dmaengine: dw-edma: Release requested IRQs on failure
  dmaengine: Fix dma_slave_config.dst_addr description

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