dmaengine: sh: Remove R-Mobile APE6 support

Renesas R-Mobile APE6 support is currently unused:
  - DMA slaves were never enabled in r8a73a4.dtsi,
  - The driver relies on legacy filter matching and describing all
    slaves and MID/RIDs in a table, unlike modern DMA engine drivers for
    similar hardware like rcar-dmac,
  - The driver doesn't seem to work well.

Remove the driver, it can be resurrected from git history when needed.

As this was the last user of SH_DMAE_BASE on Renesas ARM SoCs, the
sh-dma-engine driver core is now used on SuperH only.

Note that the DT bindings are still present, as r8a73a4.dtsi uses them.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index 7971ea275387..5aafe548ca5f 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -665,12 +665,6 @@ static const struct shdma_ops sh_dmae_shdma_ops = {
 	.get_partial = sh_dmae_get_partial,
 };
 
-static const struct of_device_id sh_dmae_of_match[] = {
-	{.compatible = "renesas,shdma-r8a73a4", .data = r8a73a4_shdma_devid,},
-	{}
-};
-MODULE_DEVICE_TABLE(of, sh_dmae_of_match);
-
 static int sh_dmae_probe(struct platform_device *pdev)
 {
 	const enum dma_slave_buswidth widths =
@@ -915,7 +909,6 @@ static struct platform_driver sh_dmae_driver = {
 	.driver		= {
 		.pm	= &sh_dmae_pm,
 		.name	= SH_DMAE_DRV_NAME,
-		.of_match_table = sh_dmae_of_match,
 	},
 	.remove		= sh_dmae_remove,
 };