Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 159 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c/gpio-cfg-helpers.h b/arch/arm/mach-s3c/gpio-cfg-helpers.h
new file mode 100644
index 000000000..db0c56f5c
--- /dev/null
+++ b/arch/arm/mach-s3c/gpio-cfg-helpers.h
@@ -0,0 +1,159 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * Samsung Platform - GPIO pin configuration helper definitions
+ */
+
+/* This is meant for core cpu support, machine or other driver files
+ * should not be including this header.
+ */
+
+#ifndef __PLAT_GPIO_CFG_HELPERS_H
+#define __PLAT_GPIO_CFG_HELPERS_H __FILE__
+
+/* As a note, all gpio configuration functions are entered exclusively, either
+ * with the relevant lock held or the system prevented from doing anything else
+ * by disabling interrupts.
+*/
+
+static inline int samsung_gpio_do_setcfg(struct samsung_gpio_chip *chip,
+					 unsigned int off, unsigned int config)
+{
+	return (chip->config->set_config)(chip, off, config);
+}
+
+static inline unsigned samsung_gpio_do_getcfg(struct samsung_gpio_chip *chip,
+					      unsigned int off)
+{
+	return (chip->config->get_config)(chip, off);
+}
+
+static inline int samsung_gpio_do_setpull(struct samsung_gpio_chip *chip,
+					  unsigned int off, samsung_gpio_pull_t pull)
+{
+	return (chip->config->set_pull)(chip, off, pull);
+}
+
+static inline samsung_gpio_pull_t samsung_gpio_do_getpull(struct samsung_gpio_chip *chip,
+							  unsigned int off)
+{
+	return chip->config->get_pull(chip, off);
+}
+
+/* Pull-{up,down} resistor controls.
+ *
+ * S3C2410,S3C2440 = Pull-UP,
+ * S3C2412,S3C2413 = Pull-Down
+ * S3C6400,S3C6410 = Pull-Both [None,Down,Up,Undef]
+ * S3C2443 = Pull-Both [not same as S3C6400]
+ */
+
+/**
+ * s3c24xx_gpio_setpull_1up() - Pull configuration for choice of up or none.
+ * @chip: The gpio chip that is being configured.
+ * @off: The offset for the GPIO being configured.
+ * @param: pull: The pull mode being requested.
+ *
+ * This is a helper function for the case where we have GPIOs with one
+ * bit configuring the presence of a pull-up resistor.
+ */
+extern int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
+				    unsigned int off, samsung_gpio_pull_t pull);
+
+/**
+ * s3c24xx_gpio_setpull_1down() - Pull configuration for choice of down or none
+ * @chip: The gpio chip that is being configured
+ * @off: The offset for the GPIO being configured
+ * @param: pull: The pull mode being requested
+ *
+ * This is a helper function for the case where we have GPIOs with one
+ * bit configuring the presence of a pull-down resistor.
+ */
+extern int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
+				      unsigned int off, samsung_gpio_pull_t pull);
+
+/**
+ * samsung_gpio_setpull_upown() - Pull configuration for choice of up,
+ * down or none
+ *
+ * @chip: The gpio chip that is being configured.
+ * @off: The offset for the GPIO being configured.
+ * @param: pull: The pull mode being requested.
+ *
+ * This is a helper function for the case where we have GPIOs with two
+ * bits configuring the presence of a pull resistor, in the following
+ * order:
+ *	00 = No pull resistor connected
+ *	01 = Pull-up resistor connected
+ *	10 = Pull-down resistor connected
+ */
+extern int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
+				       unsigned int off, samsung_gpio_pull_t pull);
+
+/**
+ * samsung_gpio_getpull_updown() - Get configuration for choice of up,
+ * down or none
+ *
+ * @chip: The gpio chip that the GPIO pin belongs to
+ * @off: The offset to the pin to get the configuration of.
+ *
+ * This helper function reads the state of the pull-{up,down} resistor
+ * for the given GPIO in the same case as samsung_gpio_setpull_upown.
+*/
+extern samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
+						       unsigned int off);
+
+/**
+ * s3c24xx_gpio_getpull_1up() - Get configuration for choice of up or none
+ * @chip: The gpio chip that the GPIO pin belongs to
+ * @off: The offset to the pin to get the configuration of.
+ *
+ * This helper function reads the state of the pull-up resistor for the
+ * given GPIO in the same case as s3c24xx_gpio_setpull_1up.
+*/
+extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
+						    unsigned int off);
+
+/**
+ * s3c24xx_gpio_getpull_1down() - Get configuration for choice of down or none
+ * @chip: The gpio chip that the GPIO pin belongs to
+ * @off: The offset to the pin to get the configuration of.
+ *
+ * This helper function reads the state of the pull-down resistor for the
+ * given GPIO in the same case as s3c24xx_gpio_setpull_1down.
+*/
+extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
+						      unsigned int off);
+
+/**
+ * s3c2443_gpio_setpull() - Pull configuration for s3c2443.
+ * @chip: The gpio chip that is being configured.
+ * @off: The offset for the GPIO being configured.
+ * @param: pull: The pull mode being requested.
+ *
+ * This is a helper function for the case where we have GPIOs with two
+ * bits configuring the presence of a pull resistor, in the following
+ * order:
+ *	00 = Pull-up resistor connected
+ *	10 = Pull-down resistor connected
+ *	x1 = No pull up resistor
+ */
+extern int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
+				unsigned int off, samsung_gpio_pull_t pull);
+
+/**
+ * s3c2443_gpio_getpull() - Get configuration for s3c2443 pull resistors
+ * @chip: The gpio chip that the GPIO pin belongs to.
+ * @off: The offset to the pin to get the configuration of.
+ *
+ * This helper function reads the state of the pull-{up,down} resistor for the
+ * given GPIO in the same case as samsung_gpio_setpull_upown.
+*/
+extern samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
+						unsigned int off);
+
+#endif /* __PLAT_GPIO_CFG_HELPERS_H */