gpio: Drop sx151x driver

This driver is not used in U-Boot. Drop it and its associated CONFIG
options.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

2 files changed, 0 insertions, 243 deletions

diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 8937e99b47..1396467ab6 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -45,7 +45,6 @@ obj-$(CONFIG_BCM2835_GPIO)	+= bcm2835_gpio.o
 obj-$(CONFIG_XILINX_GPIO)	+= xilinx_gpio.o
 obj-$(CONFIG_ADI_GPIO2)	+= adi_gpio2.o
 obj-$(CONFIG_TCA642X)		+= tca642x.o
-oby-$(CONFIG_SX151X)		+= sx151x.o
 obj-$(CONFIG_SUNXI_GPIO)	+= sunxi_gpio.o
 obj-$(CONFIG_LPC32XX_GPIO)	+= lpc32xx_gpio.o
 obj-$(CONFIG_STM32_GPIO)	+= stm32_gpio.o
diff --git a/drivers/gpio/sx151x.c b/drivers/gpio/sx151x.c
deleted file mode 100644
index 167cf40c71..0000000000
--- a/drivers/gpio/sx151x.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * (C) Copyright 2013
- * Viktar Palstsiuk, Promwad, viktar.palstsiuk@promwad.com
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-/*
- * Driver for Semtech SX151x SPI GPIO Expanders
- */
-
-#include <common.h>
-#include <spi.h>
-#include <sx151x.h>
-
-#ifndef CONFIG_SX151X_SPI_BUS
-#define CONFIG_SX151X_SPI_BUS 0
-#endif
-
-/*
- * The SX151x registers
- */
-
-#ifdef CONFIG_SX151X_GPIO_COUNT_8
-/* 8bit: SX1511 */
-#define SX151X_REG_DIR		0x07
-#define SX151X_REG_DATA		0x08
-#else
-/* 16bit: SX1512 */
-#define SX151X_REG_DIR		0x0F
-#define SX151X_REG_DATA		0x11
-#endif
-#define SX151X_REG_RESET	0x7D
-
-static int sx151x_spi_write(int chip, unsigned char reg, unsigned char val)
-{
-	struct spi_slave *slave;
-	unsigned char buf[2];
-	int ret;
-
-	slave = spi_setup_slave(CONFIG_SX151X_SPI_BUS, chip, 1000000,
-				SPI_MODE_0);
-	if (!slave)
-		return 0;
-
-	spi_claim_bus(slave);
-
-	buf[0] = reg;
-	buf[1] = val;
-
-	ret = spi_xfer(slave, 16, buf, NULL, SPI_XFER_BEGIN | SPI_XFER_END);
-	if (ret < 0)
-		printf("spi%d.%d write fail: can't write %02x to %02x: %d\n",
-			CONFIG_SX151X_SPI_BUS, chip, val, reg, ret);
-	else
-		printf("spi%d.%d write 0x%02x to register 0x%02x\n",
-		       CONFIG_SX151X_SPI_BUS, chip, val, reg);
-	spi_release_bus(slave);
-	spi_free_slave(slave);
-
-	return ret;
-}
-
-static int sx151x_spi_read(int chip, unsigned char reg)
-{
-	struct spi_slave *slave;
-	int ret;
-
-	slave = spi_setup_slave(CONFIG_SX151X_SPI_BUS, chip, 1000000,
-				SPI_MODE_0);
-	if (!slave)
-		return 0;
-
-	spi_claim_bus(slave);
-
-	ret = spi_w8r8(slave, reg | 0x80);
-	if (ret < 0)
-		printf("spi%d.%d read fail: can't read %02x: %d\n",
-			CONFIG_SX151X_SPI_BUS, chip, reg, ret);
-	else
-		printf("spi%d.%d read register 0x%02x: 0x%02x\n",
-		       CONFIG_SX151X_SPI_BUS, chip, reg, ret);
-
-	spi_release_bus(slave);
-	spi_free_slave(slave);
-
-	return ret;
-}
-
-static inline void sx151x_find_cfg(int gpio, unsigned char *reg, unsigned char *mask)
-{
-	*reg   -= gpio / 8;
-	*mask   = 1 << (gpio % 8);
-}
-
-static int sx151x_write_cfg(int chip, unsigned char gpio, unsigned char reg, int val)
-{
-	unsigned char  mask;
-	unsigned char  data;
-	int ret;
-
-	sx151x_find_cfg(gpio, &reg, &mask);
-	ret = sx151x_spi_read(chip, reg);
-	if (ret < 0)
-		return ret;
-	else
-		data = ret;
-	data &= ~mask;
-	data |= (val << (gpio % 8)) & mask;
-	return sx151x_spi_write(chip, reg, data);
-}
-
-int sx151x_get_value(int chip, int gpio)
-{
-	unsigned char  reg = SX151X_REG_DATA;
-	unsigned char  mask;
-	int ret;
-
-	sx151x_find_cfg(gpio, &reg, &mask);
-	ret = sx151x_spi_read(chip, reg);
-	if (ret >= 0)
-		ret = (ret & mask) != 0 ? 1 : 0;
-
-	return ret;
-}
-
-int sx151x_set_value(int chip, int gpio, int val)
-{
-	return sx151x_write_cfg(chip, gpio, SX151X_REG_DATA, (val ? 1 : 0));
-}
-
-int sx151x_direction_input(int chip, int gpio)
-{
-	return sx151x_write_cfg(chip, gpio, SX151X_REG_DIR, 1);
-}
-
-int sx151x_direction_output(int chip, int gpio)
-{
-	return sx151x_write_cfg(chip, gpio, SX151X_REG_DIR, 0);
-}
-
-int sx151x_reset(int chip)
-{
-	int err;
-
-	err = sx151x_spi_write(chip, SX151X_REG_RESET, 0x12);
-	if (err < 0)
-		return err;
-
-	err = sx151x_spi_write(chip, SX151X_REG_RESET, 0x34);
-	return err;
-}
-
-#ifdef CONFIG_CMD_SX151X
-
-int do_sx151x(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
-	int ret = CMD_RET_USAGE, chip = 0, gpio = 0, val = 0;
-
-	if (argc < 3)
-		return CMD_RET_USAGE;
-
-	/* arg2 used as chip number */
-	chip = simple_strtoul(argv[2], NULL, 10);
-
-	if (strcmp(argv[1], "reset") == 0) {
-		ret = sx151x_reset(chip);
-		if (!ret) {
-			printf("Device at spi%d.%d was reset\n",
-			       CONFIG_SX151X_SPI_BUS, chip);
-		}
-		return ret;
-	}
-
-	if (argc < 4)
-		return CMD_RET_USAGE;
-
-	/* arg3 used as gpio number */
-	gpio = simple_strtoul(argv[3], NULL, 10);
-
-	if (strcmp(argv[1], "get") == 0) {
-		ret = sx151x_get_value(chip, gpio);
-		if (ret < 0)
-			printf("Failed to get value at spi%d.%d gpio %d\n",
-			       CONFIG_SX151X_SPI_BUS, chip, gpio);
-		else {
-			printf("Value at spi%d.%d gpio %d is %d\n",
-			       CONFIG_SX151X_SPI_BUS, chip, gpio, ret);
-			ret = 0;
-		}
-		return ret;
-	}
-
-	if (argc < 5)
-		return CMD_RET_USAGE;
-
-	/* arg4 used as value or direction */
-	val = simple_strtoul(argv[4], NULL, 10);
-
-	if (strcmp(argv[1], "set") == 0) {
-		ret = sx151x_set_value(chip, gpio, val);
-		if (ret < 0)
-			printf("Failed to set value at spi%d.%d gpio %d\n",
-			       CONFIG_SX151X_SPI_BUS, chip, gpio);
-		else
-			printf("New value at spi%d.%d gpio %d is %d\n",
-			       CONFIG_SX151X_SPI_BUS, chip, gpio, val);
-		return ret;
-	} else if (strcmp(argv[1], "dir") == 0) {
-		if (val == 0)
-			ret = sx151x_direction_output(chip, gpio);
-		else
-			ret = sx151x_direction_input(chip, gpio);
-
-		if (ret < 0)
-			printf("Failed to set direction of spi%d.%d gpio %d\n",
-			       CONFIG_SX151X_SPI_BUS, chip, gpio);
-		else
-			printf("New direction of spi%d.%d gpio %d is %d\n",
-			       CONFIG_SX151X_SPI_BUS, chip, gpio, val);
-		return ret;
-	}
-
-	printf("Please see usage\n");
-
-	return ret;
-}
-
-U_BOOT_CMD(
-	sx151x,	5,	1,	do_sx151x,
-	"sx151x gpio access",
-	"dir chip gpio 0|1\n"
-	"	- set gpio direction (0 for output, 1 for input)\n"
-	"sx151x get chip gpio\n"
-	"	- get gpio value\n"
-	"sx151x set chip gpio 0|1\n"
-	"	- set gpio value\n"
-	"sx151x reset chip\n"
-	"	- reset chip"
-);
-
-#endif /* CONFIG_CMD_SX151X */