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![Linus Torvalds](/assets/img/avatar_default.png)
- Various cleanups to the U300 driver - Refactor the pin control core to automatically remove any GPIO ranges when the drivers are removed, instead of having the drivers do this explicitly. - Add a function for registering a batch of GPIO ranges. - Fix a number of incorrect but non-regressive error checks. - Incremental improvements to the COH901, i.MX and Nomadik drivers - Add a one-register-per-pin entirely Device Tree-based pin control driver from Tony Lindgren. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJQDUCxAAoJEEEQszewGV1z4EIQAMUREEJG+usUzX/2y9yMvtjn i3HQLV1UuPYiVyQfkrpwG7yEGYboZg4PoX4MjyTwiJt1Nq6QhHGjncYj8ngL7uSd B7EvulqH2lhLXdvW6s/nqBf5GfAqAhusLOi3FmyMbt4rnJ5bhFnbIdQ4h5MC7eFf jwQaDPJWcMPOisNJKAC+McVYpTO+VjivbfqMmQ/B9gmmtGSVoQf6YA3CvjJ0P8IT Or3xUr1VS6AnkS139qg473pYMKiSDzk9tQaN1k9V37jQvTeDv9ALOrLcJV+Bi002 tfTtmOnPDQskgjz/NQvXuPMykZNT9E+XkjxAT1ClY6YVzrLogcYJxkFH5JQ80Lb5 YMhgciRH92KSzQRsGJrJsH8HkAp3FubbC3rEt1MmkVV9ZPBgcUETGIR5tqcdyh8s 5Hj4VASksTeExi7ajYEcDXDihYOB4l9ApDs+5XNhfPRGDY8sUjoxFLvpdzFXIfhn UZ5KJt16DoDkq0KVVIx1FHRdCcga+TtpARdi0kl2pzxDRrEti9x3F4nHFgaT4Eqb osnH17RlO+VGZYtg6635wcxEWr/wMzfzpVOi/0JO2wAm+R5A3VaIqsfvvm+ouRR0 0Q++6NAVHySKTuab8Rz6D0dvTRF8O8zgJowdMDMX52C5nc5fhlKOl/Pc3g0W1q5C zmCaKOzT9RyPx2l+SrWz =79Wu -----END PGP SIGNATURE----- Merge tag 'pinctrl-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control changes from Linus Walleij: "These are the accumulated pin control patches for v3.6: - Various cleanups to the U300 driver - Refactor the pin control core to automatically remove any GPIO ranges when the drivers are removed, instead of having the drivers do this explicitly. - Add a function for registering a batch of GPIO ranges. - Fix a number of incorrect but non-regressive error checks. - Incremental improvements to the COH901, i.MX and Nomadik drivers - Add a one-register-per-pin entirely Device Tree-based pin control driver from Tony Lindgren." * tag 'pinctrl-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: Add one-register-per-pin type device tree based pinctrl driver pinctrl/nomadik: add spi2_oc1_2 pin group pinctrl/nomadik: kerneldoc fix pinctrl/nomadik: use devm_* allocators for gpio probe pinctrl/nomadik: add pin group to mco function pinctrl/nomadik: add hsit_a_2 pin group pinctrl/nomadik: add pin group smcs1 and smps0 pinctrl/nomadik: fix hsir_a_1_pins pin list pinctrl: pinctrl-imx: fix map setting problem if NO_PAD_CTL is set pinctrl/coh901: use clk_prepare_[en|dis]able() pinctrl/pinctrl-tegra: remove IS_ERR checking of pmx->pctl pinctrl/pinctrl-spear: remove IS_ERR checking of pmx->pctl pinctrl/u300: drop unused variable pinctrl: select the proper symbol pinctrl: add pinctrl_add_gpio_ranges function pinctrl: remove pinctrl_remove_gpio_range pinctrl/pinctrl-core: cleanup pinctrl_register pinctrl/u300: delete pointless debug print pinctrl/pinctrl-u300: remove devm_kfree at driver unload
621 lines
16 KiB
C
621 lines
16 KiB
C
/*
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* Core driver for the imx pin controller
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*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Copyright (C) 2012 Linaro Ltd.
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*
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* Author: Dong Aisheng <dong.aisheng@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/pinctrl/machine.h>
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#include <linux/pinctrl/pinconf.h>
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/pinctrl/pinmux.h>
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#include <linux/slab.h>
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#include "core.h"
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#include "pinctrl-imx.h"
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#define IMX_PMX_DUMP(info, p, m, c, n) \
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{ \
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int i, j; \
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printk(KERN_DEBUG "Format: Pin Mux Config\n"); \
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for (i = 0; i < n; i++) { \
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j = p[i]; \
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printk(KERN_DEBUG "%s %d 0x%lx\n", \
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info->pins[j].name, \
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m[i], c[i]); \
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} \
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}
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/* The bits in CONFIG cell defined in binding doc*/
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#define IMX_NO_PAD_CTL 0x80000000 /* no pin config need */
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#define IMX_PAD_SION 0x40000000 /* set SION */
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/**
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* @dev: a pointer back to containing device
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* @base: the offset to the controller in virtual memory
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*/
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struct imx_pinctrl {
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struct device *dev;
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struct pinctrl_dev *pctl;
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void __iomem *base;
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const struct imx_pinctrl_soc_info *info;
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};
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static const struct imx_pin_reg *imx_find_pin_reg(
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const struct imx_pinctrl_soc_info *info,
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unsigned pin, bool is_mux, unsigned mux)
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{
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const struct imx_pin_reg *pin_reg = NULL;
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int i;
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for (i = 0; i < info->npin_regs; i++) {
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pin_reg = &info->pin_regs[i];
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if (pin_reg->pid != pin)
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continue;
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if (!is_mux)
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break;
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else if (pin_reg->mux_mode == (mux & IMX_MUX_MASK))
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break;
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}
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if (!pin_reg) {
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dev_err(info->dev, "Pin(%s): unable to find pin reg map\n",
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info->pins[pin].name);
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return NULL;
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}
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return pin_reg;
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}
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static const inline struct imx_pin_group *imx_pinctrl_find_group_by_name(
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const struct imx_pinctrl_soc_info *info,
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const char *name)
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{
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const struct imx_pin_group *grp = NULL;
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int i;
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for (i = 0; i < info->ngroups; i++) {
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if (!strcmp(info->groups[i].name, name)) {
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grp = &info->groups[i];
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break;
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}
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}
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return grp;
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}
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static int imx_get_groups_count(struct pinctrl_dev *pctldev)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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return info->ngroups;
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}
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static const char *imx_get_group_name(struct pinctrl_dev *pctldev,
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unsigned selector)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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return info->groups[selector].name;
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}
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static int imx_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
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const unsigned **pins,
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unsigned *npins)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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if (selector >= info->ngroups)
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return -EINVAL;
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*pins = info->groups[selector].pins;
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*npins = info->groups[selector].npins;
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return 0;
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}
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static void imx_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
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unsigned offset)
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{
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seq_printf(s, "%s", dev_name(pctldev->dev));
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}
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static int imx_dt_node_to_map(struct pinctrl_dev *pctldev,
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struct device_node *np,
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struct pinctrl_map **map, unsigned *num_maps)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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const struct imx_pin_group *grp;
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struct pinctrl_map *new_map;
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struct device_node *parent;
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int map_num = 1;
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int i, j;
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/*
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* first find the group of this node and check if we need create
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* config maps for pins
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*/
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grp = imx_pinctrl_find_group_by_name(info, np->name);
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if (!grp) {
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dev_err(info->dev, "unable to find group for node %s\n",
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np->name);
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return -EINVAL;
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}
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for (i = 0; i < grp->npins; i++) {
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if (!(grp->configs[i] & IMX_NO_PAD_CTL))
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map_num++;
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}
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new_map = kmalloc(sizeof(struct pinctrl_map) * map_num, GFP_KERNEL);
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if (!new_map)
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return -ENOMEM;
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*map = new_map;
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*num_maps = map_num;
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/* create mux map */
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parent = of_get_parent(np);
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if (!parent) {
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kfree(new_map);
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return -EINVAL;
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}
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new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
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new_map[0].data.mux.function = parent->name;
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new_map[0].data.mux.group = np->name;
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of_node_put(parent);
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/* create config map */
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new_map++;
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for (i = j = 0; i < grp->npins; i++) {
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if (!(grp->configs[i] & IMX_NO_PAD_CTL)) {
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new_map[j].type = PIN_MAP_TYPE_CONFIGS_PIN;
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new_map[j].data.configs.group_or_pin =
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pin_get_name(pctldev, grp->pins[i]);
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new_map[j].data.configs.configs = &grp->configs[i];
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new_map[j].data.configs.num_configs = 1;
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j++;
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}
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}
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dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
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(*map)->data.mux.function, (*map)->data.mux.group, map_num);
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return 0;
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}
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static void imx_dt_free_map(struct pinctrl_dev *pctldev,
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struct pinctrl_map *map, unsigned num_maps)
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{
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kfree(map);
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}
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static struct pinctrl_ops imx_pctrl_ops = {
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.get_groups_count = imx_get_groups_count,
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.get_group_name = imx_get_group_name,
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.get_group_pins = imx_get_group_pins,
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.pin_dbg_show = imx_pin_dbg_show,
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.dt_node_to_map = imx_dt_node_to_map,
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.dt_free_map = imx_dt_free_map,
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};
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static int imx_pmx_enable(struct pinctrl_dev *pctldev, unsigned selector,
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unsigned group)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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const struct imx_pin_reg *pin_reg;
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const unsigned *pins, *mux;
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unsigned int npins, pin_id;
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int i;
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/*
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* Configure the mux mode for each pin in the group for a specific
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* function.
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*/
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pins = info->groups[group].pins;
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npins = info->groups[group].npins;
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mux = info->groups[group].mux_mode;
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WARN_ON(!pins || !npins || !mux);
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dev_dbg(ipctl->dev, "enable function %s group %s\n",
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info->functions[selector].name, info->groups[group].name);
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for (i = 0; i < npins; i++) {
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pin_id = pins[i];
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pin_reg = imx_find_pin_reg(info, pin_id, 1, mux[i]);
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if (!pin_reg)
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return -EINVAL;
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if (!pin_reg->mux_reg) {
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dev_err(ipctl->dev, "Pin(%s) does not support mux function\n",
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info->pins[pin_id].name);
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return -EINVAL;
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}
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writel(mux[i], ipctl->base + pin_reg->mux_reg);
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dev_dbg(ipctl->dev, "write: offset 0x%x val 0x%x\n",
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pin_reg->mux_reg, mux[i]);
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/* some pins also need select input setting, set it if found */
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if (pin_reg->input_reg) {
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writel(pin_reg->input_val, ipctl->base + pin_reg->input_reg);
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dev_dbg(ipctl->dev,
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"==>select_input: offset 0x%x val 0x%x\n",
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pin_reg->input_reg, pin_reg->input_val);
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}
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}
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return 0;
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}
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static int imx_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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return info->nfunctions;
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}
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static const char *imx_pmx_get_func_name(struct pinctrl_dev *pctldev,
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unsigned selector)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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return info->functions[selector].name;
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}
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static int imx_pmx_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
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const char * const **groups,
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unsigned * const num_groups)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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*groups = info->functions[selector].groups;
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*num_groups = info->functions[selector].num_groups;
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return 0;
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}
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static struct pinmux_ops imx_pmx_ops = {
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.get_functions_count = imx_pmx_get_funcs_count,
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.get_function_name = imx_pmx_get_func_name,
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.get_function_groups = imx_pmx_get_groups,
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.enable = imx_pmx_enable,
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};
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static int imx_pinconf_get(struct pinctrl_dev *pctldev,
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unsigned pin_id, unsigned long *config)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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const struct imx_pin_reg *pin_reg;
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pin_reg = imx_find_pin_reg(info, pin_id, 0, 0);
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if (!pin_reg)
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return -EINVAL;
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if (!pin_reg->conf_reg) {
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dev_err(info->dev, "Pin(%s) does not support config function\n",
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info->pins[pin_id].name);
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return -EINVAL;
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}
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*config = readl(ipctl->base + pin_reg->conf_reg);
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return 0;
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}
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static int imx_pinconf_set(struct pinctrl_dev *pctldev,
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unsigned pin_id, unsigned long config)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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const struct imx_pin_reg *pin_reg;
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pin_reg = imx_find_pin_reg(info, pin_id, 0, 0);
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if (!pin_reg)
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return -EINVAL;
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if (!pin_reg->conf_reg) {
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dev_err(info->dev, "Pin(%s) does not support config function\n",
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info->pins[pin_id].name);
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return -EINVAL;
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}
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dev_dbg(ipctl->dev, "pinconf set pin %s\n",
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info->pins[pin_id].name);
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writel(config, ipctl->base + pin_reg->conf_reg);
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dev_dbg(ipctl->dev, "write: offset 0x%x val 0x%lx\n",
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pin_reg->conf_reg, config);
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return 0;
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}
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static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
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struct seq_file *s, unsigned pin_id)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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const struct imx_pin_reg *pin_reg;
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unsigned long config;
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pin_reg = imx_find_pin_reg(info, pin_id, 0, 0);
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if (!pin_reg || !pin_reg->conf_reg) {
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seq_printf(s, "N/A");
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return;
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}
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config = readl(ipctl->base + pin_reg->conf_reg);
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seq_printf(s, "0x%lx", config);
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}
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static void imx_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
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struct seq_file *s, unsigned group)
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{
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
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const struct imx_pinctrl_soc_info *info = ipctl->info;
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struct imx_pin_group *grp;
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unsigned long config;
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const char *name;
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int i, ret;
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if (group > info->ngroups)
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return;
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seq_printf(s, "\n");
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grp = &info->groups[group];
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for (i = 0; i < grp->npins; i++) {
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name = pin_get_name(pctldev, grp->pins[i]);
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ret = imx_pinconf_get(pctldev, grp->pins[i], &config);
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if (ret)
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return;
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seq_printf(s, "%s: 0x%lx", name, config);
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}
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}
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struct pinconf_ops imx_pinconf_ops = {
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.pin_config_get = imx_pinconf_get,
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.pin_config_set = imx_pinconf_set,
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.pin_config_dbg_show = imx_pinconf_dbg_show,
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.pin_config_group_dbg_show = imx_pinconf_group_dbg_show,
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};
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static struct pinctrl_desc imx_pinctrl_desc = {
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.pctlops = &imx_pctrl_ops,
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.pmxops = &imx_pmx_ops,
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.confops = &imx_pinconf_ops,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
/* decode pin id and mux from pin function id got from device tree*/
|
|
static int imx_pinctrl_get_pin_id_and_mux(const struct imx_pinctrl_soc_info *info,
|
|
unsigned int pin_func_id, unsigned int *pin_id,
|
|
unsigned int *mux)
|
|
{
|
|
if (pin_func_id > info->npin_regs)
|
|
return -EINVAL;
|
|
|
|
*pin_id = info->pin_regs[pin_func_id].pid;
|
|
*mux = info->pin_regs[pin_func_id].mux_mode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit imx_pinctrl_parse_groups(struct device_node *np,
|
|
struct imx_pin_group *grp,
|
|
struct imx_pinctrl_soc_info *info,
|
|
u32 index)
|
|
{
|
|
unsigned int pin_func_id;
|
|
int ret, size;
|
|
const const __be32 *list;
|
|
int i, j;
|
|
u32 config;
|
|
|
|
dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
|
|
|
|
/* Initialise group */
|
|
grp->name = np->name;
|
|
|
|
/*
|
|
* the binding format is fsl,pins = <PIN_FUNC_ID CONFIG ...>,
|
|
* do sanity check and calculate pins number
|
|
*/
|
|
list = of_get_property(np, "fsl,pins", &size);
|
|
/* we do not check return since it's safe node passed down */
|
|
size /= sizeof(*list);
|
|
if (!size || size % 2) {
|
|
dev_err(info->dev, "wrong pins number or pins and configs should be pairs\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
grp->npins = size / 2;
|
|
grp->pins = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
|
|
GFP_KERNEL);
|
|
grp->mux_mode = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned int),
|
|
GFP_KERNEL);
|
|
grp->configs = devm_kzalloc(info->dev, grp->npins * sizeof(unsigned long),
|
|
GFP_KERNEL);
|
|
for (i = 0, j = 0; i < size; i += 2, j++) {
|
|
pin_func_id = be32_to_cpu(*list++);
|
|
ret = imx_pinctrl_get_pin_id_and_mux(info, pin_func_id,
|
|
&grp->pins[j], &grp->mux_mode[j]);
|
|
if (ret) {
|
|
dev_err(info->dev, "get invalid pin function id\n");
|
|
return -EINVAL;
|
|
}
|
|
/* SION bit is in mux register */
|
|
config = be32_to_cpu(*list++);
|
|
if (config & IMX_PAD_SION)
|
|
grp->mux_mode[j] |= IOMUXC_CONFIG_SION;
|
|
grp->configs[j] = config & ~IMX_PAD_SION;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
IMX_PMX_DUMP(info, grp->pins, grp->mux_mode, grp->configs, grp->npins);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit imx_pinctrl_parse_functions(struct device_node *np,
|
|
struct imx_pinctrl_soc_info *info, u32 index)
|
|
{
|
|
struct device_node *child;
|
|
struct imx_pmx_func *func;
|
|
struct imx_pin_group *grp;
|
|
int ret;
|
|
static u32 grp_index;
|
|
u32 i = 0;
|
|
|
|
dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
|
|
|
|
func = &info->functions[index];
|
|
|
|
/* Initialise function */
|
|
func->name = np->name;
|
|
func->num_groups = of_get_child_count(np);
|
|
if (func->num_groups <= 0) {
|
|
dev_err(info->dev, "no groups defined\n");
|
|
return -EINVAL;
|
|
}
|
|
func->groups = devm_kzalloc(info->dev,
|
|
func->num_groups * sizeof(char *), GFP_KERNEL);
|
|
|
|
for_each_child_of_node(np, child) {
|
|
func->groups[i] = child->name;
|
|
grp = &info->groups[grp_index++];
|
|
ret = imx_pinctrl_parse_groups(child, grp, info, i++);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit imx_pinctrl_probe_dt(struct platform_device *pdev,
|
|
struct imx_pinctrl_soc_info *info)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
struct device_node *child;
|
|
int ret;
|
|
u32 nfuncs = 0;
|
|
u32 i = 0;
|
|
|
|
if (!np)
|
|
return -ENODEV;
|
|
|
|
nfuncs = of_get_child_count(np);
|
|
if (nfuncs <= 0) {
|
|
dev_err(&pdev->dev, "no functions defined\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
info->nfunctions = nfuncs;
|
|
info->functions = devm_kzalloc(&pdev->dev, nfuncs * sizeof(struct imx_pmx_func),
|
|
GFP_KERNEL);
|
|
if (!info->functions)
|
|
return -ENOMEM;
|
|
|
|
info->ngroups = 0;
|
|
for_each_child_of_node(np, child)
|
|
info->ngroups += of_get_child_count(child);
|
|
info->groups = devm_kzalloc(&pdev->dev, info->ngroups * sizeof(struct imx_pin_group),
|
|
GFP_KERNEL);
|
|
if (!info->groups)
|
|
return -ENOMEM;
|
|
|
|
for_each_child_of_node(np, child) {
|
|
ret = imx_pinctrl_parse_functions(child, info, i++);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to parse function\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __devinit imx_pinctrl_probe(struct platform_device *pdev,
|
|
struct imx_pinctrl_soc_info *info)
|
|
{
|
|
struct imx_pinctrl *ipctl;
|
|
struct resource *res;
|
|
int ret;
|
|
|
|
if (!info || !info->pins || !info->npins
|
|
|| !info->pin_regs || !info->npin_regs) {
|
|
dev_err(&pdev->dev, "wrong pinctrl info\n");
|
|
return -EINVAL;
|
|
}
|
|
info->dev = &pdev->dev;
|
|
|
|
/* Create state holders etc for this driver */
|
|
ipctl = devm_kzalloc(&pdev->dev, sizeof(*ipctl), GFP_KERNEL);
|
|
if (!ipctl)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res)
|
|
return -ENOENT;
|
|
|
|
ipctl->base = devm_request_and_ioremap(&pdev->dev, res);
|
|
if (!ipctl->base)
|
|
return -EBUSY;
|
|
|
|
imx_pinctrl_desc.name = dev_name(&pdev->dev);
|
|
imx_pinctrl_desc.pins = info->pins;
|
|
imx_pinctrl_desc.npins = info->npins;
|
|
|
|
ret = imx_pinctrl_probe_dt(pdev, info);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "fail to probe dt properties\n");
|
|
return ret;
|
|
}
|
|
|
|
ipctl->info = info;
|
|
ipctl->dev = info->dev;
|
|
platform_set_drvdata(pdev, ipctl);
|
|
ipctl->pctl = pinctrl_register(&imx_pinctrl_desc, &pdev->dev, ipctl);
|
|
if (!ipctl->pctl) {
|
|
dev_err(&pdev->dev, "could not register IMX pinctrl driver\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_info(&pdev->dev, "initialized IMX pinctrl driver\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __devexit imx_pinctrl_remove(struct platform_device *pdev)
|
|
{
|
|
struct imx_pinctrl *ipctl = platform_get_drvdata(pdev);
|
|
|
|
pinctrl_unregister(ipctl->pctl);
|
|
|
|
return 0;
|
|
}
|