X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fgpio%2Fmxs_gpio.c;h=367b852039da52ccd23b9f99162cc53984dcc516;hb=47edaea4943c99f560f3d055b2468333e9192628;hp=539738be9b5a38df0085412aa2253f5f9f3630cc;hpb=c786f54b9ace5d7b20a0404a7deb1bae683cd4e8;p=oweals%2Fu-boot.git

diff --git a/drivers/gpio/mxs_gpio.c b/drivers/gpio/mxs_gpio.c
index 539738be9b..367b852039 100644
--- a/drivers/gpio/mxs_gpio.c
+++ b/drivers/gpio/mxs_gpio.c
@@ -4,28 +4,11 @@
  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
  * on behalf of DENX Software Engineering GmbH
  *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
-#include <netdev.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
 #include <asm/io.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
@@ -69,68 +52,79 @@ void mxs_gpio_init(void)
 	}
 }
 
-int gpio_get_value(int gp)
+int gpio_get_value(unsigned gpio)
 {
-	uint32_t bank = PAD_BANK(gp);
+	uint32_t bank = PAD_BANK(gpio);
 	uint32_t offset = PINCTRL_DIN(bank);
-	struct mx28_register *reg =
-		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+	struct mxs_register_32 *reg =
+		(struct mxs_register_32 *)(MXS_PINCTRL_BASE + offset);
 
-	return (readl(&reg->reg) >> PAD_PIN(gp)) & 1;
+	return (readl(&reg->reg) >> PAD_PIN(gpio)) & 1;
 }
 
-void gpio_set_value(int gp, int value)
+void gpio_set_value(unsigned gpio, int value)
 {
-	uint32_t bank = PAD_BANK(gp);
+	uint32_t bank = PAD_BANK(gpio);
 	uint32_t offset = PINCTRL_DOUT(bank);
-	struct mx28_register *reg =
-		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+	struct mxs_register_32 *reg =
+		(struct mxs_register_32 *)(MXS_PINCTRL_BASE + offset);
 
 	if (value)
-		writel(1 << PAD_PIN(gp), &reg->reg_set);
+		writel(1 << PAD_PIN(gpio), &reg->reg_set);
 	else
-		writel(1 << PAD_PIN(gp), &reg->reg_clr);
+		writel(1 << PAD_PIN(gpio), &reg->reg_clr);
 }
 
-int gpio_direction_input(int gp)
+int gpio_direction_input(unsigned gpio)
 {
-	uint32_t bank = PAD_BANK(gp);
+	uint32_t bank = PAD_BANK(gpio);
 	uint32_t offset = PINCTRL_DOE(bank);
-	struct mx28_register *reg =
-		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+	struct mxs_register_32 *reg =
+		(struct mxs_register_32 *)(MXS_PINCTRL_BASE + offset);
 
-	writel(1 << PAD_PIN(gp), &reg->reg_clr);
+	writel(1 << PAD_PIN(gpio), &reg->reg_clr);
 
 	return 0;
 }
 
-int gpio_direction_output(int gp, int value)
+int gpio_direction_output(unsigned gpio, int value)
 {
-	uint32_t bank = PAD_BANK(gp);
+	uint32_t bank = PAD_BANK(gpio);
 	uint32_t offset = PINCTRL_DOE(bank);
-	struct mx28_register *reg =
-		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+	struct mxs_register_32 *reg =
+		(struct mxs_register_32 *)(MXS_PINCTRL_BASE + offset);
 
-	writel(1 << PAD_PIN(gp), &reg->reg_set);
+	gpio_set_value(gpio, value);
 
-	gpio_set_value(gp, value);
+	writel(1 << PAD_PIN(gpio), &reg->reg_set);
 
 	return 0;
 }
 
-int gpio_request(int gp, const char *label)
+int gpio_request(unsigned gpio, const char *label)
 {
-	if (PAD_BANK(gp) >= PINCTRL_BANKS)
-		return -EINVAL;
+	if (PAD_BANK(gpio) >= PINCTRL_BANKS)
+		return -1;
 
 	return 0;
 }
 
-void gpio_free(int gp)
+int gpio_free(unsigned gpio)
 {
+	return 0;
 }
 
-void gpio_toggle_value(int gp)
+int name_to_gpio(const char *name)
 {
-	gpio_set_value(gp, !gpio_get_value(gp));
+	unsigned bank, pin;
+	char *end;
+
+	bank = simple_strtoul(name, &end, 10);
+
+	if (!*end || *end != ':')
+		return bank;
+
+	pin = simple_strtoul(end + 1, NULL, 10);
+
+	return (bank << MXS_PAD_BANK_SHIFT) | (pin << MXS_PAD_PIN_SHIFT);
 }