dmaengine: sh: Remove unused shdma-of driver

Remove the DT-based Renesas SHDMA DMA multiplexer driver, as it is
unused.  The DMA multiplexer node and one DMA controller instance were
added to the R-Mobile APE6 .dtsi file, but DMA support was never fully
enabled, cfr. commit a19788612f51b787 ("dmaengine: sh: Remove R-Mobile
APE6 support").

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e9445a5f4ac15fc4d3b376b5e675e39f8c95b967.1623406640.git.geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/sh/Makefile b/drivers/dma/sh/Makefile
index 112fbd2..abdf103 100644 (file)
--- a/drivers/dma/sh/Makefile
+++ b/drivers/dma/sh/Makefile
@@ -3,7 +3,7 @@
 # DMA Engine Helpers
 #
 
-obj-$(CONFIG_SH_DMAE_BASE) += shdma-base.o shdma-of.o
+obj-$(CONFIG_SH_DMAE_BASE) += shdma-base.o
 
 #
 # DMA Controllers

diff --git a/drivers/dma/sh/shdma-of.c b/drivers/dma/sh/shdma-of.c
deleted file mode 100644 (file)
index be89dd8..0000000
--- a/drivers/dma/sh/shdma-of.c
+++ /dev/null
@@ -1,76 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * SHDMA Device Tree glue
- *
- * Copyright (C) 2013 Renesas Electronics Inc.
- * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
- */
-
-#include <linux/dmaengine.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_dma.h>
-#include <linux/of_platform.h>
-#include <linux/platform_device.h>
-#include <linux/shdma-base.h>
-
-#define to_shdma_chan(c) container_of(c, struct shdma_chan, dma_chan)
-
-static struct dma_chan *shdma_of_xlate(struct of_phandle_args *dma_spec,
-                                      struct of_dma *ofdma)
-{
-       u32 id = dma_spec->args[0];
-       dma_cap_mask_t mask;
-       struct dma_chan *chan;
-
-       if (dma_spec->args_count != 1)
-               return NULL;
-
-       dma_cap_zero(mask);
-       /* Only slave DMA channels can be allocated via DT */
-       dma_cap_set(DMA_SLAVE, mask);
-
-       chan = dma_request_channel(mask, shdma_chan_filter,
-                                  (void *)(uintptr_t)id);
-       if (chan)
-               to_shdma_chan(chan)->hw_req = id;
-
-       return chan;
-}
-
-static int shdma_of_probe(struct platform_device *pdev)
-{
-       const struct of_dev_auxdata *lookup = dev_get_platdata(&pdev->dev);
-       int ret;
-
-       ret = of_dma_controller_register(pdev->dev.of_node,
-                                        shdma_of_xlate, pdev);
-       if (ret < 0)
-               return ret;
-
-       ret = of_platform_populate(pdev->dev.of_node, NULL, lookup, &pdev->dev);
-       if (ret < 0)
-               of_dma_controller_free(pdev->dev.of_node);
-
-       return ret;
-}
-
-static const struct of_device_id shdma_of_match[] = {
-       { .compatible = "renesas,shdma-mux", },
-       { }
-};
-MODULE_DEVICE_TABLE(of, sh_dmae_of_match);
-
-static struct platform_driver shdma_of = {
-       .driver         = {
-               .name   = "shdma-of",
-               .of_match_table = shdma_of_match,
-       },
-       .probe          = shdma_of_probe,
-};
-
-module_platform_driver(shdma_of);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("SH-DMA driver DT glue");
-MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");