gpio: remove the obsolete MX35 3DS BOARD MC9S08DZ60 GPIO functions

Commit e1324ece2af4 ("ARM: imx: Remove i.MX35 board files") removes the
config MACH_MX35_3DS in arch/arm/mach-imx/Kconfig.

Hence, since then, the MX35 3DS BOARD MC9S08DZ60 GPIO functions are dead
code as its config GPIO_MC9S08DZ60 depends on the config MACH_MX35_3DS.

Luckily, ./scripts/checkkconfigsymbols.py warns on non-existing configs:

MACH_MX35_3DS
Referencing files: drivers/gpio/Kconfig

Remove the obsolete MX35 3DS BOARD MC9S08DZ60 GPIO functions.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index e5993d6864fb77885bd49b3b410f7471cf00e070..fc0456a4f2967884cadbf7ba9dfa33c95fd43187 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1010,12 +1010,6 @@ config GPIO_MAX732X_IRQ
          Say yes here to enable the max732x to be used as an interrupt
          controller. It requires the driver to be built in the kernel.
 
-config GPIO_MC9S08DZ60
-       bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
-       depends on I2C=y && MACH_MX35_3DS
-       help
-         Select this to enable the MC9S08DZ60 GPIO driver
-
 config GPIO_PCA953X
        tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
        select REGMAP_I2C

diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index e0301cfedd8d697077bd1c7774197fb1485c1be9..b4e6f427a1002dcd3d98cd861ff84668649381c3 100644 (file)
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -92,7 +92,6 @@ obj-$(CONFIG_GPIO_MAX77620)           += gpio-max77620.o
 obj-$(CONFIG_GPIO_MAX77650)            += gpio-max77650.o
 obj-$(CONFIG_GPIO_MB86S7X)             += gpio-mb86s7x.o
 obj-$(CONFIG_GPIO_MC33880)             += gpio-mc33880.o
-obj-$(CONFIG_GPIO_MC9S08DZ60)          += gpio-mc9s08dz60.o
 obj-$(CONFIG_GPIO_MENZ127)             += gpio-menz127.o
 obj-$(CONFIG_GPIO_MERRIFIELD)          += gpio-merrifield.o
 obj-$(CONFIG_GPIO_ML_IOH)              += gpio-ml-ioh.o

diff --git a/drivers/gpio/gpio-mc9s08dz60.c b/drivers/gpio/gpio-mc9s08dz60.c
deleted file mode 100644 (file)
index a9f17ce..0000000
--- a/drivers/gpio/gpio-mc9s08dz60.c
+++ /dev/null
@@ -1,112 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright 2009-2012 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * Author: Wu Guoxing <b39297@freescale.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/gpio/driver.h>
-
-#define GPIO_GROUP_NUM 2
-#define GPIO_NUM_PER_GROUP 8
-#define GPIO_NUM (GPIO_GROUP_NUM*GPIO_NUM_PER_GROUP)
-
-struct mc9s08dz60 {
-       struct i2c_client *client;
-       struct gpio_chip chip;
-};
-
-static void mc9s_gpio_to_reg_and_bit(int offset, u8 *reg, u8 *bit)
-{
-       *reg = 0x20 + offset / GPIO_NUM_PER_GROUP;
-       *bit = offset % GPIO_NUM_PER_GROUP;
-}
-
-static int mc9s08dz60_get_value(struct gpio_chip *gc, unsigned offset)
-{
-       u8 reg, bit;
-       s32 value;
-       struct mc9s08dz60 *mc9s = gpiochip_get_data(gc);
-
-       mc9s_gpio_to_reg_and_bit(offset, &reg, &bit);
-       value = i2c_smbus_read_byte_data(mc9s->client, reg);
-
-       return (value >= 0) ? (value >> bit) & 0x1 : 0;
-}
-
-static int mc9s08dz60_set(struct mc9s08dz60 *mc9s, unsigned offset, int val)
-{
-       u8 reg, bit;
-       s32 value;
-
-       mc9s_gpio_to_reg_and_bit(offset, &reg, &bit);
-       value = i2c_smbus_read_byte_data(mc9s->client, reg);
-       if (value >= 0) {
-               if (val)
-                       value |= 1 << bit;
-               else
-                       value &= ~(1 << bit);
-
-               return i2c_smbus_write_byte_data(mc9s->client, reg, value);
-       } else
-               return value;
-
-}
-
-
-static void mc9s08dz60_set_value(struct gpio_chip *gc, unsigned offset, int val)
-{
-       struct mc9s08dz60 *mc9s = gpiochip_get_data(gc);
-
-       mc9s08dz60_set(mc9s, offset, val);
-}
-
-static int mc9s08dz60_direction_output(struct gpio_chip *gc,
-                                      unsigned offset, int val)
-{
-       struct mc9s08dz60 *mc9s = gpiochip_get_data(gc);
-
-       return mc9s08dz60_set(mc9s, offset, val);
-}
-
-static int mc9s08dz60_probe(struct i2c_client *client,
-                           const struct i2c_device_id *id)
-{
-       struct mc9s08dz60 *mc9s;
-
-       mc9s = devm_kzalloc(&client->dev, sizeof(*mc9s), GFP_KERNEL);
-       if (!mc9s)
-               return -ENOMEM;
-
-       mc9s->chip.label = client->name;
-       mc9s->chip.base = -1;
-       mc9s->chip.parent = &client->dev;
-       mc9s->chip.owner = THIS_MODULE;
-       mc9s->chip.ngpio = GPIO_NUM;
-       mc9s->chip.can_sleep = true;
-       mc9s->chip.get = mc9s08dz60_get_value;
-       mc9s->chip.set = mc9s08dz60_set_value;
-       mc9s->chip.direction_output = mc9s08dz60_direction_output;
-       mc9s->client = client;
-       i2c_set_clientdata(client, mc9s);
-
-       return devm_gpiochip_add_data(&client->dev, &mc9s->chip, mc9s);
-}
-
-static const struct i2c_device_id mc9s08dz60_id[] = {
-       {"mc9s08dz60", 0},
-       {},
-};
-
-static struct i2c_driver mc9s08dz60_i2c_driver = {
-       .driver = {
-               .name = "mc9s08dz60",
-       },
-       .probe = mc9s08dz60_probe,
-       .id_table = mc9s08dz60_id,
-};
-builtin_i2c_driver(mc9s08dz60_i2c_driver);