spi: remove s3c24xx driver

The s3c24xx platform was removed,s o there are no remaining users
for its spi driver.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

MAINTAINERS

@@ -18450,7 +18450,6 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/spi/samsung,spi*.yaml
 F:	drivers/spi/spi-s3c*
 F:	include/linux/platform_data/spi-s3c64xx.h
-F:	include/linux/spi/s3c24xx-fiq.h
 
 SAMSUNG SXGBE DRIVERS
 M:	Byungho An <bh74.an@samsung.com>

drivers/spi/Kconfig

@@ -838,24 +838,6 @@ config SPI_QCOM_GENI
 	  This driver can also be built as a module.  If so, the module
 	  will be called spi-geni-qcom.
 
-config SPI_S3C24XX
-	tristate "Samsung S3C24XX series SPI"
-	depends on ARCH_S3C24XX
-	select SPI_BITBANG
-	help
-	  SPI driver for Samsung S3C24XX series ARM SoCs
-
-config SPI_S3C24XX_FIQ
-	bool "S3C24XX driver with FIQ pseudo-DMA"
-	depends on SPI_S3C24XX
-	select FIQ
-	help
-	  Enable FIQ support for the S3C24XX SPI driver to provide pseudo
-	  DMA by using the fast-interrupt request framework, This allows
-	  the driver to get DMA-like performance when there are either
-	  no free DMA channels, or when doing transfers that required both
-	  TX and RX data paths.
-
 config SPI_S3C64XX
 	tristate "Samsung S3C64XX/Exynos SoC series type SPI"
 	depends on (PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST)

drivers/spi/Makefile

@@ -111,8 +111,6 @@ obj-$(CONFIG_SPI_RB4XX)			+= spi-rb4xx.o
 obj-$(CONFIG_MACH_REALTEK_RTL)		+= spi-realtek-rtl.o
 obj-$(CONFIG_SPI_RPCIF)			+= spi-rpc-if.o
 obj-$(CONFIG_SPI_RSPI)			+= spi-rspi.o
-obj-$(CONFIG_SPI_S3C24XX)		+= spi-s3c24xx-hw.o
-spi-s3c24xx-hw-y			:= spi-s3c24xx.o
 obj-$(CONFIG_SPI_S3C64XX)		+= spi-s3c64xx.o
 obj-$(CONFIG_SPI_SC18IS602)		+= spi-sc18is602.o
 obj-$(CONFIG_SPI_SH)			+= spi-sh.o

drivers/spi/spi-s3c24xx-regs.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (c) 2004 Fetron GmbH
- *
- * S3C2410 SPI register definition
- */
-
-#ifndef __SPI_S3C2410_H
-#define __SPI_S3C2410_H
-
-#define S3C2410_SPCON		(0x00)
-
-#define S3C2410_SPCON_SMOD_DMA	(2 << 5)	/* DMA mode */
-#define S3C2410_SPCON_SMOD_INT	(1 << 5)	/* interrupt mode */
-#define S3C2410_SPCON_SMOD_POLL	(0 << 5)	/* polling mode */
-#define S3C2410_SPCON_ENSCK	(1 << 4)	/* Enable SCK */
-#define S3C2410_SPCON_MSTR	(1 << 3)	/* Master:1, Slave:0 select */
-#define S3C2410_SPCON_CPOL_HIGH	(1 << 2)	/* Clock polarity select */
-#define S3C2410_SPCON_CPOL_LOW	(0 << 2)	/* Clock polarity select */
-
-#define S3C2410_SPCON_CPHA_FMTB	(1 << 1)	/* Clock Phase Select */
-#define S3C2410_SPCON_CPHA_FMTA	(0 << 1)	/* Clock Phase Select */
-
-#define S3C2410_SPSTA		(0x04)
-
-#define S3C2410_SPSTA_DCOL	(1 << 2)	/* Data Collision Error */
-#define S3C2410_SPSTA_MULD	(1 << 1)	/* Multi Master Error */
-#define S3C2410_SPSTA_READY	(1 << 0)	/* Data Tx/Rx ready */
-#define S3C2412_SPSTA_READY_ORG	(1 << 3)
-
-#define S3C2410_SPPIN		(0x08)
-
-#define S3C2410_SPPIN_ENMUL	(1 << 2)	/* Multi Master Error detect */
-#define S3C2410_SPPIN_RESERVED	(1 << 1)
-#define S3C2410_SPPIN_KEEP	(1 << 0)	/* Master Out keep */
-
-#define S3C2410_SPPRE		(0x0C)
-#define S3C2410_SPTDAT		(0x10)
-#define S3C2410_SPRDAT		(0x14)
-
-#endif /* __SPI_S3C2410_H */

include/linux/spi/s3c24xx-fiq.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/* linux/drivers/spi/spi_s3c24xx_fiq.h
- *
- * Copyright 2009 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C24XX SPI - FIQ pseudo-DMA transfer support
-*/
-
-#ifndef __LINUX_SPI_S3C24XX_FIQ_H
-#define __LINUX_SPI_S3C24XX_FIQ_H __FILE__
-
-/* We have R8 through R13 to play with */
-
-#ifdef __ASSEMBLY__
-#define __REG_NR(x)     r##x
-#else
-
-extern struct spi_fiq_code s3c24xx_spi_fiq_txrx;
-extern struct spi_fiq_code s3c24xx_spi_fiq_tx;
-extern struct spi_fiq_code s3c24xx_spi_fiq_rx;
-
-#define __REG_NR(x)     (x)
-#endif
-
-#define fiq_rspi	__REG_NR(8)
-#define fiq_rtmp	__REG_NR(9)
-#define fiq_rrx		__REG_NR(10)
-#define fiq_rtx		__REG_NR(11)
-#define fiq_rcount	__REG_NR(12)
-#define fiq_rirq	__REG_NR(13)
-
-#endif /* __LINUX_SPI_S3C24XX_FIQ_H */

include/linux/spi/s3c24xx.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (c) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410 - SPI Controller platform_device info
-*/
-
-#ifndef __LINUX_SPI_S3C24XX_H
-#define __LINUX_SPI_S3C24XX_H __FILE__
-
-struct s3c2410_spi_info {
-	unsigned int		 num_cs;	/* total chipselects */
-	int			 bus_num;       /* bus number to use. */
-	unsigned int		 use_fiq:1;	/* use fiq */
-};
-
-extern int s3c24xx_set_fiq(unsigned int irq, u32 *ack_ptr, bool on);
-
-#endif /* __LINUX_SPI_S3C24XX_H */