ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/drivers/gpio/omap_gpio.c b/marvell/uboot/drivers/gpio/omap_gpio.c
new file mode 100644
index 0000000..13dcf79
--- /dev/null
+++ b/marvell/uboot/drivers/gpio/omap_gpio.c
@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2009 Wind River Systems, Inc.
+ * Tom Rix <Tom.Rix@windriver.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * This work is derived from the linux 2.6.27 kernel source
+ * To fetch, use the kernel repository
+ * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
+ * Use the v2.6.27 tag.
+ *
+ * Below is the original's header including its copyright
+ *
+ * linux/arch/arm/plat-omap/gpio.c
+ *
+ * Support functions for OMAP GPIO
+ *
+ * Copyright (C) 2003-2005 Nokia Corporation
+ * Written by Juha Yrjölä <juha.yrjola@nokia.com>
+ */
+#include <common.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+
+#define OMAP_GPIO_DIR_OUT 0
+#define OMAP_GPIO_DIR_IN 1
+
+static inline const struct gpio_bank *get_gpio_bank(int gpio)
+{
+ return &omap_gpio_bank[gpio >> 5];
+}
+
+static inline int get_gpio_index(int gpio)
+{
+ return gpio & 0x1f;
+}
+
+int gpio_is_valid(int gpio)
+{
+ return (gpio >= 0) && (gpio < OMAP_MAX_GPIO);
+}
+
+static int check_gpio(int gpio)
+{
+ if (!gpio_is_valid(gpio)) {
+ printf("ERROR : check_gpio: invalid GPIO %d\n", gpio);
+ return -1;
+ }
+ return 0;
+}
+
+static void _set_gpio_direction(const struct gpio_bank *bank, int gpio,
+ int is_input)
+{
+ void *reg = bank->base;
+ u32 l;
+
+ switch (bank->method) {
+ case METHOD_GPIO_24XX:
+ reg += OMAP_GPIO_OE;
+ break;
+ default:
+ return;
+ }
+ l = __raw_readl(reg);
+ if (is_input)
+ l |= 1 << gpio;
+ else
+ l &= ~(1 << gpio);
+ __raw_writel(l, reg);
+}
+
+/**
+ * Get the direction of the GPIO by reading the GPIO_OE register
+ * corresponding to the specified bank.
+ */
+static int _get_gpio_direction(const struct gpio_bank *bank, int gpio)
+{
+ void *reg = bank->base;
+ u32 v;
+
+ switch (bank->method) {
+ case METHOD_GPIO_24XX:
+ reg += OMAP_GPIO_OE;
+ break;
+ default:
+ return -1;
+ }
+
+ v = __raw_readl(reg);
+
+ if (v & (1 << gpio))
+ return OMAP_GPIO_DIR_IN;
+ else
+ return OMAP_GPIO_DIR_OUT;
+}
+
+static void _set_gpio_dataout(const struct gpio_bank *bank, int gpio,
+ int enable)
+{
+ void *reg = bank->base;
+ u32 l = 0;
+
+ switch (bank->method) {
+ case METHOD_GPIO_24XX:
+ if (enable)
+ reg += OMAP_GPIO_SETDATAOUT;
+ else
+ reg += OMAP_GPIO_CLEARDATAOUT;
+ l = 1 << gpio;
+ break;
+ default:
+ printf("omap3-gpio unknown bank method %s %d\n",
+ __FILE__, __LINE__);
+ return;
+ }
+ __raw_writel(l, reg);
+}
+
+/**
+ * Set value of the specified gpio
+ */
+int gpio_set_value(unsigned gpio, int value)
+{
+ const struct gpio_bank *bank;
+
+ if (check_gpio(gpio) < 0)
+ return -1;
+ bank = get_gpio_bank(gpio);
+ _set_gpio_dataout(bank, get_gpio_index(gpio), value);
+
+ return 0;
+}
+
+/**
+ * Get value of the specified gpio
+ */
+int gpio_get_value(unsigned gpio)
+{
+ const struct gpio_bank *bank;
+ void *reg;
+ int input;
+
+ if (check_gpio(gpio) < 0)
+ return -1;
+ bank = get_gpio_bank(gpio);
+ reg = bank->base;
+ switch (bank->method) {
+ case METHOD_GPIO_24XX:
+ input = _get_gpio_direction(bank, get_gpio_index(gpio));
+ switch (input) {
+ case OMAP_GPIO_DIR_IN:
+ reg += OMAP_GPIO_DATAIN;
+ break;
+ case OMAP_GPIO_DIR_OUT:
+ reg += OMAP_GPIO_DATAOUT;
+ break;
+ default:
+ return -1;
+ }
+ break;
+ default:
+ return -1;
+ }
+ return (__raw_readl(reg)
+ & (1 << get_gpio_index(gpio))) != 0;
+}
+
+/**
+ * Set gpio direction as input
+ */
+int gpio_direction_input(unsigned gpio)
+{
+ const struct gpio_bank *bank;
+
+ if (check_gpio(gpio) < 0)
+ return -1;
+
+ bank = get_gpio_bank(gpio);
+ _set_gpio_direction(bank, get_gpio_index(gpio), 1);
+
+ return 0;
+}
+
+/**
+ * Set gpio direction as output
+ */
+int gpio_direction_output(unsigned gpio, int value)
+{
+ const struct gpio_bank *bank;
+
+ if (check_gpio(gpio) < 0)
+ return -1;
+
+ bank = get_gpio_bank(gpio);
+ _set_gpio_dataout(bank, get_gpio_index(gpio), value);
+ _set_gpio_direction(bank, get_gpio_index(gpio), 0);
+
+ return 0;
+}
+
+/**
+ * Request a gpio before using it.
+ *
+ * NOTE: Argument 'label' is unused.
+ */
+int gpio_request(unsigned gpio, const char *label)
+{
+ if (check_gpio(gpio) < 0)
+ return -1;
+
+ return 0;
+}
+
+/**
+ * Reset and free the gpio after using it.
+ */
+int gpio_free(unsigned gpio)
+{
+ return 0;
+}