dmaengine: remove s3c24xx driver

The s3c24xx platform was removed and this driver is no longer
needed.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221021203329.4143397-14-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/Kconfig

@@ -609,18 +609,6 @@ config SPRD_DMA
 	help
 	  Enable support for the on-chip DMA controller on Spreadtrum platform.
 
-config S3C24XX_DMAC
-	bool "Samsung S3C24XX DMA support"
-	depends on ARCH_S3C24XX || COMPILE_TEST
-	select DMA_ENGINE
-	select DMA_VIRTUAL_CHANNELS
-	help
-	  Support for the Samsung S3C24XX DMA controller driver. The
-	  DMA controller is having multiple DMA channels which can be
-	  configured for different peripherals like audio, UART, SPI.
-	  The DMA controller can transfer data from memory to peripheral,
-	  periphal to memory, periphal to periphal and memory to memory.
-
 config TXX9_DMAC
 	tristate "Toshiba TXx9 SoC DMA support"
 	depends on MACH_TX49XX

drivers/dma/Makefile

@@ -70,7 +70,6 @@ obj-$(CONFIG_STM32_DMA) += stm32-dma.o
 obj-$(CONFIG_STM32_DMAMUX) += stm32-dmamux.o
 obj-$(CONFIG_STM32_MDMA) += stm32-mdma.o
 obj-$(CONFIG_SPRD_DMA) += sprd-dma.o
-obj-$(CONFIG_S3C24XX_DMAC) += s3c24xx-dma.o
 obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o
 obj-$(CONFIG_TEGRA186_GPC_DMA) += tegra186-gpc-dma.o
 obj-$(CONFIG_TEGRA20_APB_DMA) += tegra20-apb-dma.o

include/linux/platform_data/dma-s3c24xx.h

@@ -1,48 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * S3C24XX DMA handling
- *
- * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- */
-
-/* Helper to encode the source selection constraints for early s3c socs. */
-#define S3C24XX_DMA_CHANREQ(src, chan)	((BIT(3) | src) << chan * 4)
-
-enum s3c24xx_dma_bus {
-	S3C24XX_DMA_APB,
-	S3C24XX_DMA_AHB,
-};
-
-/**
- * @bus: on which bus does the peripheral reside - AHB or APB.
- * @handshake: is a handshake with the peripheral necessary
- * @chansel: channel selection information, depending on variant; reqsel for
- *	     s3c2443 and later and channel-selection map for earlier SoCs
- *	     see CHANSEL doc in s3c2443-dma.c
- */
-struct s3c24xx_dma_channel {
-	enum s3c24xx_dma_bus bus;
-	bool handshake;
-	u16 chansel;
-};
-
-struct dma_slave_map;
-
-/**
- * struct s3c24xx_dma_platdata - platform specific settings
- * @num_phy_channels: number of physical channels
- * @channels: array of virtual channel descriptions
- * @num_channels: number of virtual channels
- * @slave_map: dma slave map matching table
- * @slavecnt: number of elements in slave_map
- */
-struct s3c24xx_dma_platdata {
-	int num_phy_channels;
-	struct s3c24xx_dma_channel *channels;
-	int num_channels;
-	const struct dma_slave_map *slave_map;
-	int slavecnt;
-};
-
-struct dma_chan;
-bool s3c24xx_dma_filter(struct dma_chan *chan, void *param);