dm: Expand and complete Kconfig in drivers/

[karo-tx-uboot.git] / drivers / gpio / mvgpio.c

diff --git a/drivers/gpio/mvgpio.c b/drivers/gpio/mvgpio.c
index 276f206ccd5331223bbbe9903422f3a81d39ba30..888aa07c4cc2ace9a415534c97cb8d207407cad6 100644 (file)
--- a/drivers/gpio/mvgpio.c
+++ b/drivers/gpio/mvgpio.c
@@ -6,23 +6,7 @@
  * (C) Copyright 2010
  * Marvell Semiconductor <www.marvell.com>
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -35,81 +19,79 @@
 #define MV_MAX_GPIO    128
 #endif
 
-int gpio_request(int gp, const char *label)
+int gpio_request(unsigned gpio, const char *label)
 {
-       if (gp >= MV_MAX_GPIO) {
-               printf("%s: Invalid GPIO requested %d\n", __func__, gp);
-               return -EINVAL;
+       if (gpio >= MV_MAX_GPIO) {
+               printf("%s: Invalid GPIO requested %d\n", __func__, gpio);
+               return -1;
        }
        return 0;
 }
 
-void gpio_free(int gp)
+int gpio_free(unsigned gpio)
 {
+       return 0;
 }
 
-void gpio_toggle_value(int gp)
-{
-       gpio_set_value(gp, !gpio_get_value(gp));
-}
-
-int gpio_direction_input(int gp)
+int gpio_direction_input(unsigned gpio)
 {
        struct gpio_reg *gpio_reg_bank;
 
-       if (gp >= MV_MAX_GPIO) {
-               printf("%s: Invalid GPIO %d\n", __func__, gp);
-               return -EINVAL;
+       if (gpio >= MV_MAX_GPIO) {
+               printf("%s: Invalid GPIO %d\n", __func__, gpio);
+               return -1;
        }
 
-       gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gp));
-       writel(GPIO_TO_BIT(gp), &gpio_reg_bank->gcdr);
+       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(int gp, int value)
+int gpio_direction_output(unsigned gpio, int value)
 {
        struct gpio_reg *gpio_reg_bank;
 
-       if (gp >= MV_MAX_GPIO) {
-               printf("%s: Invalid GPIO %d\n", __func__, gp);
-               return -EINVAL;
+       if (gpio >= MV_MAX_GPIO) {
+               printf("%s: Invalid GPIO %d\n", __func__, gpio);
+               return -1;
        }
 
-       gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gp));
-       writel(GPIO_TO_BIT(gp), &gpio_reg_bank->gsdr);
-       gpio_set_value(gp, value);
+       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(int gp)
+int gpio_get_value(unsigned gpio)
 {
        struct gpio_reg *gpio_reg_bank;
-       u32 gp_val;
+       u32 gpio_val;
 
-       if (gp >= MV_MAX_GPIO) {
-               printf("%s: Invalid GPIO %d\n", __func__, gp);
-               return -EINVAL;
+       if (gpio >= MV_MAX_GPIO) {
+               printf("%s: Invalid GPIO %d\n", __func__, gpio);
+               return -1;
        }
 
-       gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gp));
-       gp_val = readl(&gpio_reg_bank->gplr);
+       gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
+       gpio_val = readl(&gpio_reg_bank->gplr);
 
-       return GPIO_VAL(gp, gp_val);
+       return GPIO_VAL(gpio, gpio_val);
 }
 
-void gpio_set_value(int gp, int value)
+int gpio_set_value(unsigned gpio, int value)
 {
        struct gpio_reg *gpio_reg_bank;
 
-       if (gp >= MV_MAX_GPIO) {
-               printf("%s: Invalid GPIO %d\n", __func__, gp);
-               return;
+       if (gpio >= MV_MAX_GPIO) {
+               printf("%s: Invalid GPIO %d\n", __func__, gpio);
+               return -1;
        }
 
-       gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gp));
+       gpio_reg_bank = get_gpio_base(GPIO_TO_REG(gpio));
        if (value)
-               writel(GPIO_TO_BIT(gp), &gpio_reg_bank->gpsr);
+               writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gpsr);
        else
-               writel(GPIO_TO_BIT(gp), &gpio_reg_bank->gpcr);
+               writel(GPIO_TO_BIT(gpio), &gpio_reg_bank->gpcr);
+
+       return 0;
 }