MIPS: Move Loongson GPIO driver to drivers/gpio

Move Loongson-2's GPIO driver to drivers/gpio and add Kconfig options.

Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

3 files changed, 1 insertions, 106 deletions

diff --git a/arch/mips/configs/lemote2f_defconfig b/arch/mips/configs/lemote2f_defconfig
index e51aad9a94b1..0cbc9863c7c8 100644
--- a/arch/mips/configs/lemote2f_defconfig
+++ b/arch/mips/configs/lemote2f_defconfig
@@ -171,6 +171,7 @@ CONFIG_SERIAL_8250_FOURPORT=y
 CONFIG_LEGACY_PTY_COUNT=16
 CONFIG_HW_RANDOM=y
 CONFIG_RTC=y
+CONFIG_GPIO_LOONGSON=y
 CONFIG_THERMAL=y
 CONFIG_MEDIA_SUPPORT=m
 CONFIG_VIDEO_DEV=m
diff --git a/arch/mips/loongson/common/Makefile b/arch/mips/loongson/common/Makefile
index d87e03330b29..e70c33fdb881 100644
--- a/arch/mips/loongson/common/Makefile
+++ b/arch/mips/loongson/common/Makefile
@@ -4,7 +4,6 @@
 
 obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
     bonito-irq.o mem.o machtype.o platform.o
-obj-$(CONFIG_GPIOLIB) += gpio.o
 obj-$(CONFIG_PCI) += pci.o
 
 #
diff --git a/arch/mips/loongson/common/gpio.c b/arch/mips/loongson/common/gpio.c
deleted file mode 100644
index b4e69e0ed92b..000000000000
--- a/arch/mips/loongson/common/gpio.c
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- *  STLS2F GPIO Support
- *
- *  Copyright (c) 2008 Richard Liu,  STMicroelectronics  <richard.liu@st.com>
- *  Copyright (c) 2008-2010 Arnaud Patard <apatard@mandriva.com>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/err.h>
-#include <asm/types.h>
-#include <loongson.h>
-#include <linux/gpio.h>
-
-#define STLS2F_N_GPIO           4
-#define STLS2F_GPIO_IN_OFFSET   16
-
-static DEFINE_SPINLOCK(gpio_lock);
-
-static int ls2f_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
-{
-        u32 temp;
-        u32 mask;
-
-        spin_lock(&gpio_lock);
-        mask = 1 << gpio;
-        temp = LOONGSON_GPIOIE;
-        temp |= mask;
-        LOONGSON_GPIOIE = temp;
-        spin_unlock(&gpio_lock);
-
-        return 0;
-}
-
-static int ls2f_gpio_direction_output(struct gpio_chip *chip,
-                unsigned gpio, int level)
-{
-        u32 temp;
-        u32 mask;
-
-        gpio_set_value(gpio, level);
-        spin_lock(&gpio_lock);
-        mask = 1 << gpio;
-        temp = LOONGSON_GPIOIE;
-        temp &= (~mask);
-        LOONGSON_GPIOIE = temp;
-        spin_unlock(&gpio_lock);
-
-        return 0;
-}
-
-static int ls2f_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
-{
-        u32 val;
-        u32 mask;
-
-        mask = 1 << (gpio + STLS2F_GPIO_IN_OFFSET);
-        spin_lock(&gpio_lock);
-        val = LOONGSON_GPIODATA;
-        spin_unlock(&gpio_lock);
-
-        return (val & mask) != 0;
-}
-
-static void ls2f_gpio_set_value(struct gpio_chip *chip,
-                unsigned gpio, int value)
-{
-        u32 val;
-        u32 mask;
-
-        mask = 1 << gpio;
-
-        spin_lock(&gpio_lock);
-        val = LOONGSON_GPIODATA;
-        if (value)
-                val |= mask;
-        else
-                val &= (~mask);
-        LOONGSON_GPIODATA = val;
-        spin_unlock(&gpio_lock);
-}
-
-static struct gpio_chip ls2f_chip = {
-        .label                  = "ls2f",
-        .direction_input        = ls2f_gpio_direction_input,
-        .get                    = ls2f_gpio_get_value,
-        .direction_output       = ls2f_gpio_direction_output,
-        .set                    = ls2f_gpio_set_value,
-        .base                   = 0,
-        .ngpio                  = STLS2F_N_GPIO,
-        .can_sleep              = false,
-};
-
-static int __init ls2f_gpio_setup(void)
-{
-        return gpiochip_add(&ls2f_chip);
-}
-arch_initcall(ls2f_gpio_setup);