From c1fc3745e7b07f3bfecf16adb6c49544393094f2 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 11 Jun 2021 12:18:40 +0200 Subject: 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 Link: https://lore.kernel.org/r/e9445a5f4ac15fc4d3b376b5e675e39f8c95b967.1623406640.git.geert+renesas@glider.be Signed-off-by: Vinod Koul --- drivers/dma/sh/Makefile | 2 +- drivers/dma/sh/shdma-of.c | 76 ----------------------------------------------- 2 files changed, 1 insertion(+), 77 deletions(-) delete mode 100644 drivers/dma/sh/shdma-of.c (limited to 'drivers/dma/sh') diff --git a/drivers/dma/sh/Makefile b/drivers/dma/sh/Makefile index 112fbd22bb3f..abdf10341725 100644 --- 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 index be89dd894328..000000000000 --- 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 - */ - -#include -#include -#include -#include -#include -#include -#include - -#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 "); -- cgit v1.2.3