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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/drivers/gpio/mvgpio.c
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/drivers/gpio/mvgpio.c')
-rw-r--r--roms/u-boot/drivers/gpio/mvgpio.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/gpio/mvgpio.c b/roms/u-boot/drivers/gpio/mvgpio.c
new file mode 100644
index 000000000..12e7197da
--- /dev/null
+++ b/roms/u-boot/drivers/gpio/mvgpio.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2011
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <contact@8051projects.net>
+ *
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <linux/errno.h>
+#include "mvgpio.h"
+#include <asm/gpio.h>
+
+#ifndef MV_MAX_GPIO
+#define MV_MAX_GPIO 128
+#endif
+
+int gpio_request(unsigned gpio, const char *label)
+{
+ if (gpio >= MV_MAX_GPIO) {
+ printf("%s: Invalid GPIO requested %d\n", __func__, gpio);
+ return -1;
+ }
+ return 0;
+}
+
+int gpio_free(unsigned gpio)
+{
+ return 0;
+}
+
+int gpio_direction_input(unsigned gpio)
+{
+ struct gpio_reg *gpio_reg_bank;
+
+ if (gpio >= MV_MAX_GPIO) {
+ printf("%s: Invalid GPIO %d\n", __func__, gpio);
+ return -1;
+ }
+
+ gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
+ writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gcdr);
+ return 0;
+}
+
+int gpio_direction_output(unsigned gpio, int value)
+{
+ struct gpio_reg *gpio_reg_bank;
+
+ if (gpio >= MV_MAX_GPIO) {
+ printf("%s: Invalid GPIO %d\n", __func__, gpio);
+ return -1;
+ }
+
+ gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
+ writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gsdr);
+ gpio_set_value(gpio, value);
+ return 0;
+}
+
+int gpio_get_value(unsigned gpio)
+{
+ struct gpio_reg *gpio_reg_bank;
+ u32 gpio_val;
+
+ if (gpio >= MV_MAX_GPIO) {
+ printf("%s: Invalid GPIO %d\n", __func__, gpio);
+ return -1;
+ }
+
+ gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
+ gpio_val = readl(&gpio_reg_bank->gplr);
+
+ return GPIO_VAL(gpio, gpio_val);
+}
+
+int gpio_set_value(unsigned gpio, int value)
+{
+ struct gpio_reg *gpio_reg_bank;
+
+ if (gpio >= MV_MAX_GPIO) {
+ printf("%s: Invalid GPIO %d\n", __func__, gpio);
+ return -1;
+ }
+
+ gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
+ if (value)
+ writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gpsr);
+ else
+ writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gpcr);
+
+ return 0;
+}