[PATCH 8/9] spi: Zap SOFT_SPI (non-dm)

[Jagan Teki <jagan@amarulasolutions.com>]

- Deadline for DM migration already passed by months.
- Sent couple of zap patches and
- No response on dm conversation
hence removed the driver.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 drivers/spi/Kconfig           |  13 ++-
 drivers/spi/Makefile          |   1 -
 drivers/spi/soft_spi_legacy.c | 168 ----------------------------------
 3 files changed, 6 insertions(+), 176 deletions(-)
 delete mode 100644 drivers/spi/soft_spi_legacy.c

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 46a7b9e9d3..09b9cb17d8 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -292,6 +292,12 @@ config SPI_SIFIVE
 
 	  The SiFive SPI controller driver is found on various SiFive SoCs.
 
+config SOFT_SPI
+	bool "Soft SPI driver"
+	help
+	 Enable Soft SPI driver. This driver is to use GPIO simulate
+	 the SPI protocol.
+
 config SPI_SUNXI
 	bool "Allwinner SoC SPI controllers"
 	default ARCH_SUNXI
@@ -397,13 +403,6 @@ config ZYNQMP_GQSPI
 
 endif # if DM_SPI
 
-config SOFT_SPI
-	bool "Soft SPI driver"
-	depends on DM_SPI || (DEPRECATED && !DM_SPI)
-	help
-	 Enable Soft SPI driver. This driver is to use GPIO simulate
-	 the SPI protocol.
-
 config FSL_ESPI
 	bool "Freescale eSPI driver"
 	imply SPI_FLASH_BAR
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 342776404a..54881a7412 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -13,7 +13,6 @@ obj-$(CONFIG_TI_QSPI) += ti_qspi.o
 else
 obj-y += spi.o
 obj-$(CONFIG_SPI_MEM) += spi-mem-nodm.o
-obj-$(CONFIG_SOFT_SPI) += soft_spi_legacy.o
 endif
 
 obj-$(CONFIG_ALTERA_SPI) += altera_spi.o
diff --git a/drivers/spi/soft_spi_legacy.c b/drivers/spi/soft_spi_legacy.c
deleted file mode 100644
index cc5ab5f991..0000000000
--- a/drivers/spi/soft_spi_legacy.c
+++ /dev/null
@@ -1,168 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * (C) Copyright 2002
- * Gerald Van Baren, Custom IDEAS, vanbaren at cideas.com.
- *
- * Influenced by code from:
- * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
- */
-
-#include <common.h>
-#include <spi.h>
-
-#include <malloc.h>
-
-/*-----------------------------------------------------------------------
- * Definitions
- */
-
-#ifdef DEBUG_SPI
-#define PRINTD(fmt,args...)	printf (fmt ,##args)
-#else
-#define PRINTD(fmt,args...)
-#endif
-
-struct soft_spi_slave {
-	struct spi_slave slave;
-	unsigned int mode;
-};
-
-static inline struct soft_spi_slave *to_soft_spi(struct spi_slave *slave)
-{
-	return container_of(slave, struct soft_spi_slave, slave);
-}
-
-/*=====================================================================*/
-/*                         Public Functions                            */
-/*=====================================================================*/
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
-		unsigned int max_hz, unsigned int mode)
-{
-	struct soft_spi_slave *ss;
-
-	if (!spi_cs_is_valid(bus, cs))
-		return NULL;
-
-	ss = spi_alloc_slave(struct soft_spi_slave, bus, cs);
-	if (!ss)
-		return NULL;
-
-	ss->mode = mode;
-
-	/* TODO: Use max_hz to limit the SCK rate */
-
-	return &ss->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
-	struct soft_spi_slave *ss = to_soft_spi(slave);
-
-	free(ss);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
-#ifdef CONFIG_SYS_IMMR
-	volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
-#endif
-	struct soft_spi_slave *ss = to_soft_spi(slave);
-
-	/*
-	 * Make sure the SPI clock is in idle state as defined for
-	 * this slave.
-	 */
-	if (ss->mode & SPI_CPOL)
-		SPI_SCL(1);
-	else
-		SPI_SCL(0);
-
-	return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-	/* Nothing to do */
-}
-
-/*-----------------------------------------------------------------------
- * SPI transfer
- *
- * This writes "bitlen" bits out the SPI MOSI port and simultaneously clocks
- * "bitlen" bits in the SPI MISO port.  That's just the way SPI works.
- *
- * The source of the outgoing bits is the "dout" parameter and the
- * destination of the input bits is the "din" parameter.  Note that "dout"
- * and "din" can point to the same memory location, in which case the
- * input data overwrites the output data (since both are buffered by
- * temporary variables, this is OK).
- */
-int  spi_xfer(struct spi_slave *slave, unsigned int bitlen,
-		const void *dout, void *din, unsigned long flags)
-{
-#ifdef CONFIG_SYS_IMMR
-	volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
-#endif
-	struct soft_spi_slave *ss = to_soft_spi(slave);
-	uchar		tmpdin  = 0;
-	uchar		tmpdout = 0;
-	const u8	*txd = dout;
-	u8		*rxd = din;
-	int		cpol = ss->mode & SPI_CPOL;
-	int		cpha = ss->mode & SPI_CPHA;
-	unsigned int	j;
-
-	PRINTD("spi_xfer: slave %u:%u dout %08X din %08X bitlen %u\n",
-		slave->bus, slave->cs, *(uint *)txd, *(uint *)rxd, bitlen);
-
-	if (flags & SPI_XFER_BEGIN)
-		spi_cs_activate(slave);
-
-	for(j = 0; j < bitlen; j++) {
-		/*
-		 * Check if it is time to work on a new byte.
-		 */
-		if ((j % 8) == 0) {
-			if (txd)
-				tmpdout = *txd++;
-			else
-				tmpdout = 0;
-			if(j != 0) {
-				if (rxd)
-					*rxd++ = tmpdin;
-			}
-			tmpdin  = 0;
-		}
-
-		if (!cpha)
-			SPI_SCL(!cpol);
-		SPI_SDA(tmpdout & 0x80);
-		SPI_DELAY;
-		if (cpha)
-			SPI_SCL(!cpol);
-		else
-			SPI_SCL(cpol);
-		tmpdin	<<= 1;
-		tmpdin	|= SPI_READ;
-		tmpdout	<<= 1;
-		SPI_DELAY;
-		if (cpha)
-			SPI_SCL(cpol);
-	}
-	/*
-	 * If the number of bits isn't a multiple of 8, shift the last
-	 * bits over to left-justify them.  Then store the last byte
-	 * read in.
-	 */
-	if (rxd) {
-		if ((bitlen % 8) != 0)
-			tmpdin <<= 8 - (bitlen % 8);
-		*rxd++ = tmpdin;
-	}
-
-	if (flags & SPI_XFER_END)
-		spi_cs_deactivate(slave);
-
-	return(0);
-}
-- 
2.25.1