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path: root/drivers/sh/pfc/gpio.c
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Diffstat (limited to 'drivers/sh/pfc/gpio.c')
-rw-r--r--drivers/sh/pfc/gpio.c240
1 files changed, 0 insertions, 240 deletions
diff --git a/drivers/sh/pfc/gpio.c b/drivers/sh/pfc/gpio.c
deleted file mode 100644
index 6a24f07c2013..000000000000
--- a/drivers/sh/pfc/gpio.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- * SuperH Pin Function Controller GPIO driver.
- *
- * Copyright (C) 2008 Magnus Damm
- * Copyright (C) 2009 - 2012 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#define pr_fmt(fmt) "sh_pfc " KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/gpio.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/sh_pfc.h>
-
-struct sh_pfc_chip {
- struct sh_pfc *pfc;
- struct gpio_chip gpio_chip;
-};
-
-static struct sh_pfc_chip *gpio_to_pfc_chip(struct gpio_chip *gc)
-{
- return container_of(gc, struct sh_pfc_chip, gpio_chip);
-}
-
-static struct sh_pfc *gpio_to_pfc(struct gpio_chip *gc)
-{
- return gpio_to_pfc_chip(gc)->pfc;
-}
-
-static int sh_gpio_request(struct gpio_chip *gc, unsigned offset)
-{
- return pinctrl_request_gpio(offset);
-}
-
-static void sh_gpio_free(struct gpio_chip *gc, unsigned offset)
-{
- pinctrl_free_gpio(offset);
-}
-
-static void sh_gpio_set_value(struct sh_pfc *pfc, unsigned gpio, int value)
-{
- struct pinmux_data_reg *dr = NULL;
- int bit = 0;
-
- if (!pfc || sh_pfc_get_data_reg(pfc, gpio, &dr, &bit) != 0)
- BUG();
- else
- sh_pfc_write_bit(dr, bit, value);
-}
-
-static int sh_gpio_get_value(struct sh_pfc *pfc, unsigned gpio)
-{
- struct pinmux_data_reg *dr = NULL;
- int bit = 0;
-
- if (!pfc || sh_pfc_get_data_reg(pfc, gpio, &dr, &bit) != 0)
- return -EINVAL;
-
- return sh_pfc_read_bit(dr, bit);
-}
-
-static int sh_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
-{
- return pinctrl_gpio_direction_input(offset);
-}
-
-static int sh_gpio_direction_output(struct gpio_chip *gc, unsigned offset,
- int value)
-{
- sh_gpio_set_value(gpio_to_pfc(gc), offset, value);
-
- return pinctrl_gpio_direction_output(offset);
-}
-
-static int sh_gpio_get(struct gpio_chip *gc, unsigned offset)
-{
- return sh_gpio_get_value(gpio_to_pfc(gc), offset);
-}
-
-static void sh_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
-{
- sh_gpio_set_value(gpio_to_pfc(gc), offset, value);
-}
-
-static int sh_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
-{
- struct sh_pfc *pfc = gpio_to_pfc(gc);
- pinmux_enum_t enum_id;
- pinmux_enum_t *enum_ids;
- int i, k, pos;
-
- pos = 0;
- enum_id = 0;
- while (1) {
- pos = sh_pfc_gpio_to_enum(pfc, offset, pos, &enum_id);
- if (pos <= 0 || !enum_id)
- break;
-
- for (i = 0; i < pfc->gpio_irq_size; i++) {
- enum_ids = pfc->gpio_irq[i].enum_ids;
- for (k = 0; enum_ids[k]; k++) {
- if (enum_ids[k] == enum_id)
- return pfc->gpio_irq[i].irq;
- }
- }
- }
-
- return -ENOSYS;
-}
-
-static void sh_pfc_gpio_setup(struct sh_pfc_chip *chip)
-{
- struct sh_pfc *pfc = chip->pfc;
- struct gpio_chip *gc = &chip->gpio_chip;
-
- gc->request = sh_gpio_request;
- gc->free = sh_gpio_free;
- gc->direction_input = sh_gpio_direction_input;
- gc->get = sh_gpio_get;
- gc->direction_output = sh_gpio_direction_output;
- gc->set = sh_gpio_set;
- gc->to_irq = sh_gpio_to_irq;
-
- WARN_ON(pfc->first_gpio != 0); /* needs testing */
-
- gc->label = pfc->name;
- gc->owner = THIS_MODULE;
- gc->base = pfc->first_gpio;
- gc->ngpio = (pfc->last_gpio - pfc->first_gpio) + 1;
-}
-
-int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
-{
- struct sh_pfc_chip *chip;
- int ret;
-
- chip = kzalloc(sizeof(struct sh_pfc_chip), GFP_KERNEL);
- if (unlikely(!chip))
- return -ENOMEM;
-
- chip->pfc = pfc;
-
- sh_pfc_gpio_setup(chip);
-
- ret = gpiochip_add(&chip->gpio_chip);
- if (unlikely(ret < 0))
- kfree(chip);
-
- pr_info("%s handling gpio %d -> %d\n",
- pfc->name, pfc->first_gpio, pfc->last_gpio);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(sh_pfc_register_gpiochip);
-
-static int sh_pfc_gpio_match(struct gpio_chip *gc, void *data)
-{
- return !!strstr(gc->label, data);
-}
-
-static int sh_pfc_gpio_probe(struct platform_device *pdev)
-{
- struct sh_pfc_chip *chip;
- struct gpio_chip *gc;
-
- gc = gpiochip_find("_pfc", sh_pfc_gpio_match);
- if (unlikely(!gc)) {
- pr_err("Cant find gpio chip\n");
- return -ENODEV;
- }
-
- chip = gpio_to_pfc_chip(gc);
- platform_set_drvdata(pdev, chip);
-
- pr_info("attaching to GPIO chip %s\n", chip->pfc->name);
-
- return 0;
-}
-
-static int sh_pfc_gpio_remove(struct platform_device *pdev)
-{
- struct sh_pfc_chip *chip = platform_get_drvdata(pdev);
- int ret;
-
- ret = gpiochip_remove(&chip->gpio_chip);
- if (unlikely(ret < 0))
- return ret;
-
- kfree(chip);
- return 0;
-}
-
-static struct platform_driver sh_pfc_gpio_driver = {
- .probe = sh_pfc_gpio_probe,
- .remove = sh_pfc_gpio_remove,
- .driver = {
- .name = KBUILD_MODNAME,
- .owner = THIS_MODULE,
- },
-};
-
-static struct platform_device sh_pfc_gpio_device = {
- .name = KBUILD_MODNAME,
- .id = -1,
-};
-
-static int __init sh_pfc_gpio_init(void)
-{
- int rc;
-
- rc = platform_driver_register(&sh_pfc_gpio_driver);
- if (likely(!rc)) {
- rc = platform_device_register(&sh_pfc_gpio_device);
- if (unlikely(rc))
- platform_driver_unregister(&sh_pfc_gpio_driver);
- }
-
- return rc;
-}
-
-static void __exit sh_pfc_gpio_exit(void)
-{
- platform_device_unregister(&sh_pfc_gpio_device);
- platform_driver_unregister(&sh_pfc_gpio_driver);
-}
-
-module_init(sh_pfc_gpio_init);
-module_exit(sh_pfc_gpio_exit);
-
-MODULE_AUTHOR("Magnus Damm, Paul Mundt");
-MODULE_DESCRIPTION("GPIO driver for SuperH pin function controller");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:pfc-gpio");