[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/mips/bcm63xx/gpio.c b/src/kernel/linux/v4.14/arch/mips/bcm63xx/gpio.c
new file mode 100644
index 0000000..16f353a
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/mips/bcm63xx/gpio.c
@@ -0,0 +1,151 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ * Copyright (C) 2008-2011 Florian Fainelli <florian@openwrt.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/driver.h>
+
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_gpio.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+static u32 gpio_out_low_reg;
+
+static void bcm63xx_gpio_out_low_reg_init(void)
+{
+ switch (bcm63xx_get_cpu_id()) {
+ case BCM6345_CPU_ID:
+ gpio_out_low_reg = GPIO_DATA_LO_REG_6345;
+ break;
+ default:
+ gpio_out_low_reg = GPIO_DATA_LO_REG;
+ break;
+ }
+}
+
+static DEFINE_SPINLOCK(bcm63xx_gpio_lock);
+static u32 gpio_out_low, gpio_out_high;
+
+static void bcm63xx_gpio_set(struct gpio_chip *chip,
+ unsigned gpio, int val)
+{
+ u32 reg;
+ u32 mask;
+ u32 *v;
+ unsigned long flags;
+
+ if (gpio >= chip->ngpio)
+ BUG();
+
+ if (gpio < 32) {
+ reg = gpio_out_low_reg;
+ mask = 1 << gpio;
+ v = &gpio_out_low;
+ } else {
+ reg = GPIO_DATA_HI_REG;
+ mask = 1 << (gpio - 32);
+ v = &gpio_out_high;
+ }
+
+ spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
+ if (val)
+ *v |= mask;
+ else
+ *v &= ~mask;
+ bcm_gpio_writel(*v, reg);
+ spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
+}
+
+static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio)
+{
+ u32 reg;
+ u32 mask;
+
+ if (gpio >= chip->ngpio)
+ BUG();
+
+ if (gpio < 32) {
+ reg = gpio_out_low_reg;
+ mask = 1 << gpio;
+ } else {
+ reg = GPIO_DATA_HI_REG;
+ mask = 1 << (gpio - 32);
+ }
+
+ return !!(bcm_gpio_readl(reg) & mask);
+}
+
+static int bcm63xx_gpio_set_direction(struct gpio_chip *chip,
+ unsigned gpio, int dir)
+{
+ u32 reg;
+ u32 mask;
+ u32 tmp;
+ unsigned long flags;
+
+ if (gpio >= chip->ngpio)
+ BUG();
+
+ if (gpio < 32) {
+ reg = GPIO_CTL_LO_REG;
+ mask = 1 << gpio;
+ } else {
+ reg = GPIO_CTL_HI_REG;
+ mask = 1 << (gpio - 32);
+ }
+
+ spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
+ tmp = bcm_gpio_readl(reg);
+ if (dir == BCM63XX_GPIO_DIR_IN)
+ tmp &= ~mask;
+ else
+ tmp |= mask;
+ bcm_gpio_writel(tmp, reg);
+ spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
+
+ return 0;
+}
+
+static int bcm63xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+ return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_IN);
+}
+
+static int bcm63xx_gpio_direction_output(struct gpio_chip *chip,
+ unsigned gpio, int value)
+{
+ bcm63xx_gpio_set(chip, gpio, value);
+ return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_OUT);
+}
+
+
+static struct gpio_chip bcm63xx_gpio_chip = {
+ .label = "bcm63xx-gpio",
+ .direction_input = bcm63xx_gpio_direction_input,
+ .direction_output = bcm63xx_gpio_direction_output,
+ .get = bcm63xx_gpio_get,
+ .set = bcm63xx_gpio_set,
+ .base = 0,
+};
+
+int __init bcm63xx_gpio_init(void)
+{
+ bcm63xx_gpio_out_low_reg_init();
+
+ gpio_out_low = bcm_gpio_readl(gpio_out_low_reg);
+ if (!BCMCPU_IS_6345())
+ gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG);
+ bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count();
+ pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio);
+
+ return gpiochip_add_data(&bcm63xx_gpio_chip, NULL);
+}