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path: root/drivers/pinctrl/pinctrl-pxa3xx.c
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Diffstat (limited to 'drivers/pinctrl/pinctrl-pxa3xx.c')
-rw-r--r--drivers/pinctrl/pinctrl-pxa3xx.c227
1 files changed, 0 insertions, 227 deletions
diff --git a/drivers/pinctrl/pinctrl-pxa3xx.c b/drivers/pinctrl/pinctrl-pxa3xx.c
deleted file mode 100644
index 1f49bb02a6af..000000000000
--- a/drivers/pinctrl/pinctrl-pxa3xx.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * linux/drivers/pinctrl/pinctrl-pxa3xx.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * publishhed by the Free Software Foundation.
- *
- * Copyright (C) 2011, Marvell Technology Group Ltd.
- *
- * Author: Haojian Zhuang <haojian.zhuang@marvell.com>
- *
- */
-
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include "pinctrl-pxa3xx.h"
-
-static struct pinctrl_gpio_range pxa3xx_pinctrl_gpio_range = {
- .name = "PXA3xx GPIO",
- .id = 0,
- .base = 0,
- .pin_base = 0,
-};
-
-static int pxa3xx_get_groups_count(struct pinctrl_dev *pctrldev)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
-
- return info->num_grps;
-}
-
-static const char *pxa3xx_get_group_name(struct pinctrl_dev *pctrldev,
- unsigned selector)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
-
- return info->grps[selector].name;
-}
-
-static int pxa3xx_get_group_pins(struct pinctrl_dev *pctrldev,
- unsigned selector,
- const unsigned **pins,
- unsigned *num_pins)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
-
- *pins = info->grps[selector].pins;
- *num_pins = info->grps[selector].npins;
- return 0;
-}
-
-static struct pinctrl_ops pxa3xx_pctrl_ops = {
- .get_groups_count = pxa3xx_get_groups_count,
- .get_group_name = pxa3xx_get_group_name,
- .get_group_pins = pxa3xx_get_group_pins,
-};
-
-static int pxa3xx_pmx_get_funcs_count(struct pinctrl_dev *pctrldev)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
-
- return info->num_funcs;
-}
-
-static const char *pxa3xx_pmx_get_func_name(struct pinctrl_dev *pctrldev,
- unsigned func)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
- return info->funcs[func].name;
-}
-
-static int pxa3xx_pmx_get_groups(struct pinctrl_dev *pctrldev, unsigned func,
- const char * const **groups,
- unsigned * const num_groups)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
- *groups = info->funcs[func].groups;
- *num_groups = info->funcs[func].num_groups;
- return 0;
-}
-
-/* Return function number. If failure, return negative value. */
-static int match_mux(struct pxa3xx_mfp_pin *mfp, unsigned mux)
-{
- int i;
- for (i = 0; i < PXA3xx_MAX_MUX; i++) {
- if (mfp->func[i] == mux)
- break;
- }
- if (i >= PXA3xx_MAX_MUX)
- return -EINVAL;
- return i;
-}
-
-/* check whether current pin configuration is valid. Negative for failure */
-static int match_group_mux(struct pxa3xx_pin_group *grp,
- struct pxa3xx_pinmux_info *info,
- unsigned mux)
-{
- int i, pin, ret = 0;
- for (i = 0; i < grp->npins; i++) {
- pin = grp->pins[i];
- ret = match_mux(&info->mfp[pin], mux);
- if (ret < 0) {
- dev_err(info->dev, "Can't find mux %d on pin%d\n",
- mux, pin);
- break;
- }
- }
- return ret;
-}
-
-static int pxa3xx_pmx_enable(struct pinctrl_dev *pctrldev, unsigned func,
- unsigned group)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
- struct pxa3xx_pin_group *pin_grp = &info->grps[group];
- unsigned int data;
- int i, mfpr, pin, pin_func;
-
- if (!pin_grp->npins ||
- (match_group_mux(pin_grp, info, pin_grp->mux) < 0)) {
- dev_err(info->dev, "Failed to set the pin group: %d\n", group);
- return -EINVAL;
- }
- for (i = 0; i < pin_grp->npins; i++) {
- pin = pin_grp->pins[i];
- pin_func = match_mux(&info->mfp[pin], pin_grp->mux);
- mfpr = info->mfp[pin].mfpr;
- data = readl_relaxed(info->virt_base + mfpr);
- data &= ~MFPR_FUNC_MASK;
- data |= pin_func;
- writel_relaxed(data, info->virt_base + mfpr);
- }
- return 0;
-}
-
-static int pxa3xx_pmx_request_gpio(struct pinctrl_dev *pctrldev,
- struct pinctrl_gpio_range *range,
- unsigned pin)
-{
- struct pxa3xx_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
- unsigned int data;
- int pin_func, mfpr;
-
- pin_func = match_mux(&info->mfp[pin], PXA3xx_MUX_GPIO);
- if (pin_func < 0) {
- dev_err(info->dev, "No GPIO function on pin%d (%s)\n",
- pin, info->pads[pin].name);
- return -EINVAL;
- }
- mfpr = info->mfp[pin].mfpr;
- /* write gpio function into mfpr register */
- data = readl_relaxed(info->virt_base + mfpr) & ~MFPR_FUNC_MASK;
- data |= pin_func;
- writel_relaxed(data, info->virt_base + mfpr);
- return 0;
-}
-
-static struct pinmux_ops pxa3xx_pmx_ops = {
- .get_functions_count = pxa3xx_pmx_get_funcs_count,
- .get_function_name = pxa3xx_pmx_get_func_name,
- .get_function_groups = pxa3xx_pmx_get_groups,
- .enable = pxa3xx_pmx_enable,
- .gpio_request_enable = pxa3xx_pmx_request_gpio,
-};
-
-int pxa3xx_pinctrl_register(struct platform_device *pdev,
- struct pxa3xx_pinmux_info *info)
-{
- struct pinctrl_desc *desc;
- struct resource *res;
-
- if (!info || !info->cputype)
- return -EINVAL;
- desc = info->desc;
- desc->pins = info->pads;
- desc->npins = info->num_pads;
- desc->pctlops = &pxa3xx_pctrl_ops;
- desc->pmxops = &pxa3xx_pmx_ops;
- info->dev = &pdev->dev;
- pxa3xx_pinctrl_gpio_range.npins = info->num_gpio;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENOENT;
- info->virt_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(info->virt_base))
- return PTR_ERR(info->virt_base);
- info->pctrl = pinctrl_register(desc, &pdev->dev, info);
- if (!info->pctrl) {
- dev_err(&pdev->dev, "failed to register PXA pinmux driver\n");
- return -EINVAL;
- }
- pinctrl_add_gpio_range(info->pctrl, &pxa3xx_pinctrl_gpio_range);
- platform_set_drvdata(pdev, info);
- return 0;
-}
-
-int pxa3xx_pinctrl_unregister(struct platform_device *pdev)
-{
- struct pxa3xx_pinmux_info *info = platform_get_drvdata(pdev);
-
- pinctrl_unregister(info->pctrl);
- platform_set_drvdata(pdev, NULL);
- return 0;
-}
-
-static int __init pxa3xx_pinctrl_init(void)
-{
- pr_info("pxa3xx-pinctrl: PXA3xx pinctrl driver initializing\n");
- return 0;
-}
-core_initcall_sync(pxa3xx_pinctrl_init);
-
-static void __exit pxa3xx_pinctrl_exit(void)
-{
-}
-module_exit(pxa3xx_pinctrl_exit);
-
-MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
-MODULE_DESCRIPTION("PXA3xx pin control driver");
-MODULE_LICENSE("GPL v2");