dmaengine: dw-edma: Replace chip ID number with device name

Using an abstract number as the DW eDMA chip identifier isn't practical
because there can be more than one DW eDMA controller on the platform. Some
may be detected as the PCIe Endpoints, and others may be embedded in DW
PCIe Root Port/Endpoint controllers.  An abstract number in, for instance,
the IRQ handlers list, doesn't give a notion regarding their reference to
the particular DMA controller.

To preserve the code simplicity and support multi-eDMA platforms, use the
parental device name to create the DW eDMA controller name.

Link: https://lore.kernel.org/r/20230113171409.30470-22-Sergey.Semin@baikalelectronics.ru
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
index 07a23ecc834f..96bfd0173f3a 100644
--- a/include/linux/dma/edma.h
+++ b/include/linux/dma/edma.h
@@ -76,7 +76,6 @@ enum dw_edma_chip_flags {
  */
 struct dw_edma_chip {
 	struct device		*dev;
-	int			id;
 	int			nr_irqs;
 	const struct dw_edma_core_ops   *ops;
 	u32			flags;