diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-pxa3xx.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-pxa3xx.c | 227 |
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 1f49bb02a6a..00000000000 --- 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"); |