[PATCH 16/22] spi: remove spi-sh-sci

Christoph Hellwig
2023-01-13T06:30:38Z

Now that arch/sh is removed this driver is dead code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/spi/Kconfig | 7 --
drivers/spi/Makefile | 1 -
drivers/spi/spi-sh-sci.c | 197 ---------------------------------------
3 files changed, 205 deletions(-)
delete mode 100644 drivers/spi/spi-sh-sci.c

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 7508dcef909c78..76f3bc6f8c81fc 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -882,13 +882,6 @@ config SPI_SH_MSIOF
help
SPI driver for SuperH and SH Mobile MSIOF blocks.

-config SPI_SH_SCI
- tristate "SuperH SCI SPI controller"
- depends on SUPERH
- select SPI_BITBANG
- help
- SPI driver for SuperH SCI blocks.
-
config SPI_SH_HSPI
tristate "SuperH HSPI controller"
depends on ARCH_RENESAS || COMPILE_TEST
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 342a7eb5181c9b..27d877440c6539 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -118,7 +118,6 @@ obj-$(CONFIG_SPI_S3C64XX) += spi-s3c64xx.o
obj-$(CONFIG_SPI_SC18IS602) += spi-sc18is602.o
obj-$(CONFIG_SPI_SH_HSPI) += spi-sh-hspi.o
obj-$(CONFIG_SPI_SH_MSIOF) += spi-sh-msiof.o
-obj-$(CONFIG_SPI_SH_SCI) += spi-sh-sci.o
obj-$(CONFIG_SPI_SIFIVE) += spi-sifive.o
obj-$(CONFIG_SPI_SLAVE_MT27XX) += spi-slave-mt27xx.o
obj-$(CONFIG_SPI_SN_F_OSPI) += spi-sn-f-ospi.o
diff --git a/drivers/spi/spi-sh-sci.c b/drivers/spi/spi-sh-sci.c
deleted file mode 100644
index 8f30531e141867..00000000000000
--- a/drivers/spi/spi-sh-sci.c
+++ /dev/null
@@ -1,197 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * SH SCI SPI interface
- *
- * Copyright (c) 2008 Magnus Damm
- *
- * Based on S3C24XX GPIO based SPI driver, which is:
- * Copyright (c) 2006 Ben Dooks
- * Copyright (c) 2006 Simtec Electronics
- */
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/platform_device.h>
-
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-#include <linux/module.h>
-
-#include <asm/spi.h>
-#include <asm/io.h>
-
-struct sh_sci_spi {
- struct spi_bitbang bitbang;
-
- void __iomem *membase;
- unsigned char val;
- struct sh_spi_info *info;
- struct platform_device *dev;
-};
-
-#define SCSPTR(sp) (sp->membase + 0x1c)
-#define PIN_SCK (1 << 2)
-#define PIN_TXD (1 << 0)
-#define PIN_RXD PIN_TXD
-#define PIN_INIT ((1 << 1) | (1 << 3) | PIN_SCK | PIN_TXD)
-
-static inline void setbits(struct sh_sci_spi *sp, int bits, int on)
-{
- /*
- * We are the only user of SCSPTR so no locking is required.
- * Reading bit 2 and 0 in SCSPTR gives pin state as input.
- * Writing the same bits sets the output value.
- * This makes regular read-modify-write difficult so we
- * use sp->val to keep track of the latest register value.
- */
-
- if (on)
- sp->val |= bits;
- else
- sp->val &= ~bits;
-
- iowrite8(sp->val, SCSPTR(sp));
-}
-
-static inline void setsck(struct spi_device *dev, int on)
-{
- setbits(spi_master_get_devdata(dev->master), PIN_SCK, on);
-}
-
-static inline void setmosi(struct spi_device *dev, int on)
-{
- setbits(spi_master_get_devdata(dev->master), PIN_TXD, on);
-}
-
-static inline u32 getmiso(struct spi_device *dev)
-{
- struct sh_sci_spi *sp = spi_master_get_devdata(dev->master);
-
- return (ioread8(SCSPTR(sp)) & PIN_RXD) ? 1 : 0;
-}
-
-#define spidelay(x) ndelay(x)
-
-#include "spi-bitbang-txrx.h"
-
-static u32 sh_sci_spi_txrx_mode0(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits,
- unsigned flags)
-{
- return bitbang_txrx_be_cpha0(spi, nsecs, 0, flags, word, bits);
-}
-
-static u32 sh_sci_spi_txrx_mode1(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits,
- unsigned flags)
-{
- return bitbang_txrx_be_cpha1(spi, nsecs, 0, flags, word, bits);
-}
-
-static u32 sh_sci_spi_txrx_mode2(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits,
- unsigned flags)
-{
- return bitbang_txrx_be_cpha0(spi, nsecs, 1, flags, word, bits);
-}
-
-static u32 sh_sci_spi_txrx_mode3(struct spi_device *spi,
- unsigned nsecs, u32 word, u8 bits,
- unsigned flags)
-{
- return bitbang_txrx_be_cpha1(spi, nsecs, 1, flags, word, bits);
-}
-
-static void sh_sci_spi_chipselect(struct spi_device *dev, int value)
-{
- struct sh_sci_spi *sp = spi_master_get_devdata(dev->master);
-
- if (sp->info->chip_select)
- (sp->info->chip_select)(sp->info, dev->chip_select, value);
-}
-
-static int sh_sci_spi_probe(struct platform_device *dev)
-{
- struct resource *r;
- struct spi_master *master;
- struct sh_sci_spi *sp;
- int ret;
-
- master = spi_alloc_master(&dev->dev, sizeof(struct sh_sci_spi));
- if (master == NULL) {
- dev_err(&dev->dev, "failed to allocate spi master\n");
- ret = -ENOMEM;
- goto err0;
- }
-
- sp = spi_master_get_devdata(master);
-
- platform_set_drvdata(dev, sp);
- sp->info = dev_get_platdata(&dev->dev);
- if (!sp->info) {
- dev_err(&dev->dev, "platform data is missing\n");
- ret = -ENOENT;
- goto err1;
- }
-
- /* setup spi bitbang adaptor */
- sp->bitbang.master = master;
- sp->bitbang.master->bus_num = sp->info->bus_num;
- sp->bitbang.master->num_chipselect = sp->info->num_chipselect;
- sp->bitbang.chipselect = sh_sci_spi_chipselect;
-
- sp->bitbang.txrx_word[SPI_MODE_0] = sh_sci_spi_txrx_mode0;
- sp->bitbang.txrx_word[SPI_MODE_1] = sh_sci_spi_txrx_mode1;
- sp->bitbang.txrx_word[SPI_MODE_2] = sh_sci_spi_txrx_mode2;
- sp->bitbang.txrx_word[SPI_MODE_3] = sh_sci_spi_txrx_mode3;
-
- r = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (r == NULL) {
- ret = -ENOENT;
- goto err1;
- }
- sp->membase = ioremap(r->start, resource_size(r));
- if (!sp->membase) {
- ret = -ENXIO;
- goto err1;
- }
- sp->val = ioread8(SCSPTR(sp));
- setbits(sp, PIN_INIT, 1);
-
- ret = spi_bitbang_start(&sp->bitbang);
- if (!ret)
- return 0;
-
- setbits(sp, PIN_INIT, 0);
- iounmap(sp->membase);
- err1:
- spi_master_put(sp->bitbang.master);
- err0:
- return ret;
-}
-
-static int sh_sci_spi_remove(struct platform_device *dev)
-{
- struct sh_sci_spi *sp = platform_get_drvdata(dev);
-
- spi_bitbang_stop(&sp->bitbang);
- setbits(sp, PIN_INIT, 0);
- iounmap(sp->membase);
- spi_master_put(sp->bitbang.master);
- return 0;
-}
-
-static struct platform_driver sh_sci_spi_drv = {
- .probe = sh_sci_spi_probe,
- .remove = sh_sci_spi_remove,
- .driver = {
- .name = "spi_sh_sci",
- },
-};
-module_platform_driver(sh_sci_spi_drv);
-
-MODULE_DESCRIPTION("SH SCI SPI Driver");
-MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:spi_sh_sci");
--
2.39.0