sh-pfc: Move driver from drivers/sh/ to drivers/pinctrl/

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 0 insertions, 464 deletions

diff --git a/drivers/sh/pfc/pinctrl.c b/drivers/sh/pfc/pinctrl.c
deleted file mode 100644
index 221bde03913a..000000000000
--- a/drivers/sh/pfc/pinctrl.c
+++ /dev/null
@@ -1,464 +0,0 @@
-/*
- * SuperH Pin Function Controller pinmux support.
- *
- * Copyright (C) 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 DRV_NAME "sh-pfc"
-#define pr_fmt(fmt) KBUILD_MODNAME " pinctrl: " fmt
-
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/pinctrl/pinconf.h>
-#include <linux/pinctrl/pinconf-generic.h>
-#include <linux/pinctrl/pinctrl.h>
-#include <linux/pinctrl/pinmux.h>
-#include <linux/sh_pfc.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-
-#include "core.h"
-
-struct sh_pfc_pinctrl {
-	struct pinctrl_dev *pctl;
-	struct sh_pfc *pfc;
-
-	struct pinmux_gpio **functions;
-	unsigned int nr_functions;
-
-	struct pinctrl_pin_desc *pads;
-	unsigned int nr_pads;
-
-	spinlock_t lock;
-};
-
-static int sh_pfc_get_groups_count(struct pinctrl_dev *pctldev)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	return pmx->nr_pads;
-}
-
-static const char *sh_pfc_get_group_name(struct pinctrl_dev *pctldev,
-					 unsigned selector)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	return pmx->pads[selector].name;
-}
-
-static int sh_pfc_get_group_pins(struct pinctrl_dev *pctldev, unsigned group,
-				 const unsigned **pins, unsigned *num_pins)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	*pins = &pmx->pads[group].number;
-	*num_pins = 1;
-
-	return 0;
-}
-
-static void sh_pfc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
-				unsigned offset)
-{
-	seq_printf(s, "%s", DRV_NAME);
-}
-
-static struct pinctrl_ops sh_pfc_pinctrl_ops = {
-	.get_groups_count	= sh_pfc_get_groups_count,
-	.get_group_name		= sh_pfc_get_group_name,
-	.get_group_pins		= sh_pfc_get_group_pins,
-	.pin_dbg_show		= sh_pfc_pin_dbg_show,
-};
-
-static int sh_pfc_get_functions_count(struct pinctrl_dev *pctldev)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	return pmx->nr_functions;
-}
-
-static const char *sh_pfc_get_function_name(struct pinctrl_dev *pctldev,
-					    unsigned selector)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	return pmx->functions[selector]->name;
-}
-
-static int sh_pfc_get_function_groups(struct pinctrl_dev *pctldev, unsigned func,
-				      const char * const **groups,
-				      unsigned * const num_groups)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	*groups = &pmx->functions[func]->name;
-	*num_groups = 1;
-
-	return 0;
-}
-
-static int sh_pfc_noop_enable(struct pinctrl_dev *pctldev, unsigned func,
-			      unsigned group)
-{
-	return 0;
-}
-
-static void sh_pfc_noop_disable(struct pinctrl_dev *pctldev, unsigned func,
-				unsigned group)
-{
-}
-
-static int sh_pfc_config_function(struct sh_pfc *pfc, unsigned offset)
-{
-	if (sh_pfc_config_gpio(pfc, offset,
-			       PINMUX_TYPE_FUNCTION,
-			       GPIO_CFG_DRYRUN) != 0)
-		return -EINVAL;
-
-	if (sh_pfc_config_gpio(pfc, offset,
-			       PINMUX_TYPE_FUNCTION,
-			       GPIO_CFG_REQ) != 0)
-		return -EINVAL;
-
-	return 0;
-}
-
-static int sh_pfc_reconfig_pin(struct sh_pfc *pfc, unsigned offset,
-			       int new_type)
-{
-	unsigned long flags;
-	int pinmux_type;
-	int ret = -EINVAL;
-
-	spin_lock_irqsave(&pfc->lock, flags);
-
-	pinmux_type = pfc->pdata->gpios[offset].flags & PINMUX_FLAG_TYPE;
-
-	/*
-	 * See if the present config needs to first be de-configured.
-	 */
-	switch (pinmux_type) {
-	case PINMUX_TYPE_GPIO:
-		break;
-	case PINMUX_TYPE_OUTPUT:
-	case PINMUX_TYPE_INPUT:
-	case PINMUX_TYPE_INPUT_PULLUP:
-	case PINMUX_TYPE_INPUT_PULLDOWN:
-		sh_pfc_config_gpio(pfc, offset, pinmux_type, GPIO_CFG_FREE);
-		break;
-	default:
-		goto err;
-	}
-
-	/*
-	 * Dry run
-	 */
-	if (sh_pfc_config_gpio(pfc, offset, new_type,
-			       GPIO_CFG_DRYRUN) != 0)
-		goto err;
-
-	/*
-	 * Request
-	 */
-	if (sh_pfc_config_gpio(pfc, offset, new_type,
-			       GPIO_CFG_REQ) != 0)
-		goto err;
-
-	pfc->pdata->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
-	pfc->pdata->gpios[offset].flags |= new_type;
-
-	ret = 0;
-
-err:
-	spin_unlock_irqrestore(&pfc->lock, flags);
-
-	return ret;
-}
-
-
-static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev,
-				      struct pinctrl_gpio_range *range,
-				      unsigned offset)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-	struct sh_pfc *pfc = pmx->pfc;
-	unsigned long flags;
-	int ret, pinmux_type;
-
-	spin_lock_irqsave(&pfc->lock, flags);
-
-	pinmux_type = pfc->pdata->gpios[offset].flags & PINMUX_FLAG_TYPE;
-
-	switch (pinmux_type) {
-	case PINMUX_TYPE_FUNCTION:
-		pr_notice_once("Use of GPIO API for function requests is "
-			       "deprecated, convert to pinctrl\n");
-		/* handle for now */
-		ret = sh_pfc_config_function(pfc, offset);
-		if (unlikely(ret < 0))
-			goto err;
-
-		break;
-	case PINMUX_TYPE_GPIO:
-	case PINMUX_TYPE_INPUT:
-	case PINMUX_TYPE_OUTPUT:
-		break;
-	default:
-		pr_err("Unsupported mux type (%d), bailing...\n", pinmux_type);
-		ret = -ENOTSUPP;
-		goto err;
-	}
-
-	ret = 0;
-
-err:
-	spin_unlock_irqrestore(&pfc->lock, flags);
-
-	return ret;
-}
-
-static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,
-				     struct pinctrl_gpio_range *range,
-				     unsigned offset)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-	struct sh_pfc *pfc = pmx->pfc;
-	unsigned long flags;
-	int pinmux_type;
-
-	spin_lock_irqsave(&pfc->lock, flags);
-
-	pinmux_type = pfc->pdata->gpios[offset].flags & PINMUX_FLAG_TYPE;
-
-	sh_pfc_config_gpio(pfc, offset, pinmux_type, GPIO_CFG_FREE);
-
-	spin_unlock_irqrestore(&pfc->lock, flags);
-}
-
-static int sh_pfc_gpio_set_direction(struct pinctrl_dev *pctldev,
-				     struct pinctrl_gpio_range *range,
-				     unsigned offset, bool input)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-	int type = input ? PINMUX_TYPE_INPUT : PINMUX_TYPE_OUTPUT;
-
-	return sh_pfc_reconfig_pin(pmx->pfc, offset, type);
-}
-
-static struct pinmux_ops sh_pfc_pinmux_ops = {
-	.get_functions_count	= sh_pfc_get_functions_count,
-	.get_function_name	= sh_pfc_get_function_name,
-	.get_function_groups	= sh_pfc_get_function_groups,
-	.enable			= sh_pfc_noop_enable,
-	.disable		= sh_pfc_noop_disable,
-	.gpio_request_enable	= sh_pfc_gpio_request_enable,
-	.gpio_disable_free	= sh_pfc_gpio_disable_free,
-	.gpio_set_direction	= sh_pfc_gpio_set_direction,
-};
-
-static int sh_pfc_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin,
-			      unsigned long *config)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-	struct sh_pfc *pfc = pmx->pfc;
-
-	*config = pfc->pdata->gpios[pin].flags & PINMUX_FLAG_TYPE;
-
-	return 0;
-}
-
-static int sh_pfc_pinconf_set(struct pinctrl_dev *pctldev, unsigned pin,
-			      unsigned long config)
-{
-	struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
-
-	/* Validate the new type */
-	if (config >= PINMUX_FLAG_TYPE)
-		return -EINVAL;
-
-	return sh_pfc_reconfig_pin(pmx->pfc, pin, config);
-}
-
-static void sh_pfc_pinconf_dbg_show(struct pinctrl_dev *pctldev,
-				    struct seq_file *s, unsigned pin)
-{
-	const char *pinmux_type_str[] = {
-		[PINMUX_TYPE_NONE]		= "none",
-		[PINMUX_TYPE_FUNCTION]		= "function",
-		[PINMUX_TYPE_GPIO]		= "gpio",
-		[PINMUX_TYPE_OUTPUT]		= "output",
-		[PINMUX_TYPE_INPUT]		= "input",
-		[PINMUX_TYPE_INPUT_PULLUP]	= "input bias pull up",
-		[PINMUX_TYPE_INPUT_PULLDOWN]	= "input bias pull down",
-	};
-	unsigned long config;
-	int rc;
-
-	rc = sh_pfc_pinconf_get(pctldev, pin, &config);
-	if (unlikely(rc != 0))
-		return;
-
-	seq_printf(s, " %s", pinmux_type_str[config]);
-}
-
-static struct pinconf_ops sh_pfc_pinconf_ops = {
-	.pin_config_get		= sh_pfc_pinconf_get,
-	.pin_config_set		= sh_pfc_pinconf_set,
-	.pin_config_dbg_show	= sh_pfc_pinconf_dbg_show,
-};
-
-static struct pinctrl_gpio_range sh_pfc_gpio_range = {
-	.name		= DRV_NAME,
-	.id		= 0,
-};
-
-static struct pinctrl_desc sh_pfc_pinctrl_desc = {
-	.name		= DRV_NAME,
-	.owner		= THIS_MODULE,
-	.pctlops	= &sh_pfc_pinctrl_ops,
-	.pmxops		= &sh_pfc_pinmux_ops,
-	.confops	= &sh_pfc_pinconf_ops,
-};
-
-static void sh_pfc_map_one_gpio(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx,
-				struct pinmux_gpio *gpio, unsigned offset)
-{
-	struct pinmux_data_reg *dummy;
-	unsigned long flags;
-	int bit;
-
-	gpio->flags &= ~PINMUX_FLAG_TYPE;
-
-	if (sh_pfc_get_data_reg(pfc, offset, &dummy, &bit) == 0)
-		gpio->flags |= PINMUX_TYPE_GPIO;
-	else {
-		gpio->flags |= PINMUX_TYPE_FUNCTION;
-
-		spin_lock_irqsave(&pmx->lock, flags);
-		pmx->nr_functions++;
-		spin_unlock_irqrestore(&pmx->lock, flags);
-	}
-}
-
-/* pinmux ranges -> pinctrl pin descs */
-static int sh_pfc_map_gpios(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx)
-{
-	unsigned long flags;
-	int i;
-
-	pmx->nr_pads = pfc->pdata->last_gpio - pfc->pdata->first_gpio + 1;
-
-	pmx->pads = devm_kzalloc(pfc->dev, sizeof(*pmx->pads) * pmx->nr_pads,
-				 GFP_KERNEL);
-	if (unlikely(!pmx->pads)) {
-		pmx->nr_pads = 0;
-		return -ENOMEM;
-	}
-
-	spin_lock_irqsave(&pfc->lock, flags);
-
-	/*
-	 * We don't necessarily have a 1:1 mapping between pin and linux
-	 * GPIO number, as the latter maps to the associated enum_id.
-	 * Care needs to be taken to translate back to pin space when
-	 * dealing with any pin configurations.
-	 */
-	for (i = 0; i < pmx->nr_pads; i++) {
-		struct pinctrl_pin_desc *pin = pmx->pads + i;
-		struct pinmux_gpio *gpio = pfc->pdata->gpios + i;
-
-		pin->number = pfc->pdata->first_gpio + i;
-		pin->name = gpio->name;
-
-		/* XXX */
-		if (unlikely(!gpio->enum_id))
-			continue;
-
-		sh_pfc_map_one_gpio(pfc, pmx, gpio, i);
-	}
-
-	spin_unlock_irqrestore(&pfc->lock, flags);
-
-	sh_pfc_pinctrl_desc.pins = pmx->pads;
-	sh_pfc_pinctrl_desc.npins = pmx->nr_pads;
-
-	return 0;
-}
-
-static int sh_pfc_map_functions(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx)
-{
-	unsigned long flags;
-	int i, fn;
-
-	pmx->functions = devm_kzalloc(pfc->dev, pmx->nr_functions *
-				      sizeof(*pmx->functions), GFP_KERNEL);
-	if (unlikely(!pmx->functions))
-		return -ENOMEM;
-
-	spin_lock_irqsave(&pmx->lock, flags);
-
-	for (i = fn = 0; i < pmx->nr_pads; i++) {
-		struct pinmux_gpio *gpio = pfc->pdata->gpios + i;
-
-		if ((gpio->flags & PINMUX_FLAG_TYPE) == PINMUX_TYPE_FUNCTION)
-			pmx->functions[fn++] = gpio;
-	}
-
-	spin_unlock_irqrestore(&pmx->lock, flags);
-
-	return 0;
-}
-
-int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
-{
-	struct sh_pfc_pinctrl *pmx;
-	int ret;
-
-	pmx = devm_kzalloc(pfc->dev, sizeof(*pmx), GFP_KERNEL);
-	if (unlikely(!pmx))
-		return -ENOMEM;
-
-	spin_lock_init(&pmx->lock);
-
-	pmx->pfc = pfc;
-	pfc->pinctrl = pmx;
-
-	ret = sh_pfc_map_gpios(pfc, pmx);
-	if (unlikely(ret != 0))
-		return ret;
-
-	ret = sh_pfc_map_functions(pfc, pmx);
-	if (unlikely(ret != 0))
-		return ret;
-
-	pmx->pctl = pinctrl_register(&sh_pfc_pinctrl_desc, pfc->dev, pmx);
-	if (IS_ERR(pmx->pctl))
-		return PTR_ERR(pmx->pctl);
-
-	sh_pfc_gpio_range.npins = pfc->pdata->last_gpio
-				- pfc->pdata->first_gpio + 1;
-	sh_pfc_gpio_range.base = pfc->pdata->first_gpio;
-	sh_pfc_gpio_range.pin_base = pfc->pdata->first_gpio;
-
-	pinctrl_add_gpio_range(pmx->pctl, &sh_pfc_gpio_range);
-
-	return 0;
-}
-
-int sh_pfc_unregister_pinctrl(struct sh_pfc *pfc)
-{
-	struct sh_pfc_pinctrl *pmx = pfc->pinctrl;
-
-	pinctrl_unregister(pmx->pctl);
-
-	pfc->pinctrl = NULL;
-	return 0;
-}