[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/pinctrl/freescale/pinctrl-imx.c b/src/kernel/linux/v4.14/drivers/pinctrl/freescale/pinctrl-imx.c
new file mode 100644
index 0000000..ec0119e
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -0,0 +1,766 @@
+/*
+ * Core driver for the imx pin controller
+ *
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Linaro Ltd.
+ *
+ * Author: Dong Aisheng <dong.aisheng@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+
+#include "../core.h"
+#include "../pinconf.h"
+#include "../pinmux.h"
+#include "pinctrl-imx.h"
+
+/* The bits in CONFIG cell defined in binding doc*/
+#define IMX_NO_PAD_CTL 0x80000000 /* no pin config need */
+#define IMX_PAD_SION 0x40000000 /* set SION */
+
+static inline const struct group_desc *imx_pinctrl_find_group_by_name(
+ struct pinctrl_dev *pctldev,
+ const char *name)
+{
+ const struct group_desc *grp = NULL;
+ int i;
+
+ for (i = 0; i < pctldev->num_groups; i++) {
+ grp = pinctrl_generic_get_group(pctldev, i);
+ if (grp && !strcmp(grp->name, name))
+ break;
+ }
+
+ return grp;
+}
+
+static void imx_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
+ unsigned offset)
+{
+ seq_printf(s, "%s", dev_name(pctldev->dev));
+}
+
+static int imx_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **map, unsigned *num_maps)
+{
+ struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ const struct group_desc *grp;
+ struct pinctrl_map *new_map;
+ struct device_node *parent;
+ int map_num = 1;
+ int i, j;
+
+ /*
+ * first find the group of this node and check if we need create
+ * config maps for pins
+ */
+ grp = imx_pinctrl_find_group_by_name(pctldev, np->name);
+ if (!grp) {
+ dev_err(info->dev, "unable to find group for node %s\n",
+ np->name);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < grp->num_pins; i++) {
+ struct imx_pin *pin = &((struct imx_pin *)(grp->data))[i];
+
+ if (!(pin->config & IMX_NO_PAD_CTL))
+ map_num++;
+ }
+
+ new_map = kmalloc(sizeof(struct pinctrl_map) * map_num, GFP_KERNEL);
+ if (!new_map)
+ return -ENOMEM;
+
+ *map = new_map;
+ *num_maps = map_num;
+
+ /* create mux map */
+ parent = of_get_parent(np);
+ if (!parent) {
+ kfree(new_map);
+ return -EINVAL;
+ }
+ new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
+ new_map[0].data.mux.function = parent->name;
+ new_map[0].data.mux.group = np->name;
+ of_node_put(parent);
+
+ /* create config map */
+ new_map++;
+ for (i = j = 0; i < grp->num_pins; i++) {
+ struct imx_pin *pin = &((struct imx_pin *)(grp->data))[i];
+
+ if (!(pin->config & IMX_NO_PAD_CTL)) {
+ new_map[j].type = PIN_MAP_TYPE_CONFIGS_PIN;
+ new_map[j].data.configs.group_or_pin =
+ pin_get_name(pctldev, pin->pin);
+ new_map[j].data.configs.configs = &pin->config;
+ new_map[j].data.configs.num_configs = 1;
+ j++;
+ }
+ }
+
+ dev_dbg(pctldev->dev, "maps: function %s group %s num %d\n",
+ (*map)->data.mux.function, (*map)->data.mux.group, map_num);
+
+ return 0;
+}
+
+static void imx_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map, unsigned num_maps)
+{
+ kfree(map);
+}
+
+static const struct pinctrl_ops imx_pctrl_ops = {
+ .get_groups_count = pinctrl_generic_get_group_count,
+ .get_group_name = pinctrl_generic_get_group_name,
+ .get_group_pins = pinctrl_generic_get_group_pins,
+ .pin_dbg_show = imx_pin_dbg_show,
+ .dt_node_to_map = imx_dt_node_to_map,
+ .dt_free_map = imx_dt_free_map,
+
+};
+
+static int imx_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group)
+{
+ struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ const struct imx_pin_reg *pin_reg;
+ unsigned int npins, pin_id;
+ int i;
+ struct group_desc *grp = NULL;
+ struct function_desc *func = NULL;
+
+ /*
+ * Configure the mux mode for each pin in the group for a specific
+ * function.
+ */
+ grp = pinctrl_generic_get_group(pctldev, group);
+ if (!grp)
+ return -EINVAL;
+
+ func = pinmux_generic_get_function(pctldev, selector);
+ if (!func)
+ return -EINVAL;
+
+ npins = grp->num_pins;
+
+ dev_dbg(ipctl->dev, "enable function %s group %s\n",
+ func->name, grp->name);
+
+ for (i = 0; i < npins; i++) {
+ struct imx_pin *pin = &((struct imx_pin *)(grp->data))[i];
+
+ pin_id = pin->pin;
+ pin_reg = &info->pin_regs[pin_id];
+
+ if (pin_reg->mux_reg == -1) {
+ dev_dbg(ipctl->dev, "Pin(%s) does not support mux function\n",
+ info->pins[pin_id].name);
+ continue;
+ }
+
+ if (info->flags & SHARE_MUX_CONF_REG) {
+ u32 reg;
+ reg = readl(ipctl->base + pin_reg->mux_reg);
+ reg &= ~info->mux_mask;
+ reg |= (pin->mux_mode << info->mux_shift);
+ writel(reg, ipctl->base + pin_reg->mux_reg);
+ dev_dbg(ipctl->dev, "write: offset 0x%x val 0x%x\n",
+ pin_reg->mux_reg, reg);
+ } else {
+ writel(pin->mux_mode, ipctl->base + pin_reg->mux_reg);
+ dev_dbg(ipctl->dev, "write: offset 0x%x val 0x%x\n",
+ pin_reg->mux_reg, pin->mux_mode);
+ }
+
+ /*
+ * If the select input value begins with 0xff, it's a quirky
+ * select input and the value should be interpreted as below.
+ * 31 23 15 7 0
+ * | 0xff | shift | width | select |
+ * It's used to work around the problem that the select
+ * input for some pin is not implemented in the select
+ * input register but in some general purpose register.
+ * We encode the select input value, width and shift of
+ * the bit field into input_val cell of pin function ID
+ * in device tree, and then decode them here for setting
+ * up the select input bits in general purpose register.
+ */
+ if (pin->input_val >> 24 == 0xff) {
+ u32 val = pin->input_val;
+ u8 select = val & 0xff;
+ u8 width = (val >> 8) & 0xff;
+ u8 shift = (val >> 16) & 0xff;
+ u32 mask = ((1 << width) - 1) << shift;
+ /*
+ * The input_reg[i] here is actually some IOMUXC general
+ * purpose register, not regular select input register.
+ */
+ val = readl(ipctl->base + pin->input_reg);
+ val &= ~mask;
+ val |= select << shift;
+ writel(val, ipctl->base + pin->input_reg);
+ } else if (pin->input_reg) {
+ /*
+ * Regular select input register can never be at offset
+ * 0, and we only print register value for regular case.
+ */
+ if (ipctl->input_sel_base)
+ writel(pin->input_val, ipctl->input_sel_base +
+ pin->input_reg);
+ else
+ writel(pin->input_val, ipctl->base +
+ pin->input_reg);
+ dev_dbg(ipctl->dev,
+ "==>select_input: offset 0x%x val 0x%x\n",
+ pin->input_reg, pin->input_val);
+ }
+ }
+
+ return 0;
+}
+
+struct pinmux_ops imx_pmx_ops = {
+ .get_functions_count = pinmux_generic_get_function_count,
+ .get_function_name = pinmux_generic_get_function_name,
+ .get_function_groups = pinmux_generic_get_function_groups,
+ .set_mux = imx_pmx_set,
+};
+
+/* decode generic config into raw register values */
+static u32 imx_pinconf_decode_generic_config(struct imx_pinctrl *ipctl,
+ unsigned long *configs,
+ unsigned int num_configs)
+{
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ struct imx_cfg_params_decode *decode;
+ enum pin_config_param param;
+ u32 raw_config = 0;
+ u32 param_val;
+ int i, j;
+
+ WARN_ON(num_configs > info->num_decodes);
+
+ for (i = 0; i < num_configs; i++) {
+ param = pinconf_to_config_param(configs[i]);
+ param_val = pinconf_to_config_argument(configs[i]);
+ decode = info->decodes;
+ for (j = 0; j < info->num_decodes; j++) {
+ if (param == decode->param) {
+ if (decode->invert)
+ param_val = !param_val;
+ raw_config |= (param_val << decode->shift)
+ & decode->mask;
+ break;
+ }
+ decode++;
+ }
+ }
+
+ if (info->fixup)
+ info->fixup(configs, num_configs, &raw_config);
+
+ return raw_config;
+}
+
+static u32 imx_pinconf_parse_generic_config(struct device_node *np,
+ struct imx_pinctrl *ipctl)
+{
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ struct pinctrl_dev *pctl = ipctl->pctl;
+ unsigned int num_configs;
+ unsigned long *configs;
+ int ret;
+
+ if (!info->generic_pinconf)
+ return 0;
+
+ ret = pinconf_generic_parse_dt_config(np, pctl, &configs,
+ &num_configs);
+ if (ret)
+ return 0;
+
+ return imx_pinconf_decode_generic_config(ipctl, configs, num_configs);
+}
+
+static int imx_pinconf_get(struct pinctrl_dev *pctldev,
+ unsigned pin_id, unsigned long *config)
+{
+ struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ const struct imx_pin_reg *pin_reg = &info->pin_regs[pin_id];
+
+ if (pin_reg->conf_reg == -1) {
+ dev_err(info->dev, "Pin(%s) does not support config function\n",
+ info->pins[pin_id].name);
+ return -EINVAL;
+ }
+
+ *config = readl(ipctl->base + pin_reg->conf_reg);
+
+ if (info->flags & SHARE_MUX_CONF_REG)
+ *config &= ~info->mux_mask;
+
+ return 0;
+}
+
+static int imx_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned pin_id, unsigned long *configs,
+ unsigned num_configs)
+{
+ struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ const struct imx_pin_reg *pin_reg = &info->pin_regs[pin_id];
+ int i;
+
+ if (pin_reg->conf_reg == -1) {
+ dev_err(info->dev, "Pin(%s) does not support config function\n",
+ info->pins[pin_id].name);
+ return -EINVAL;
+ }
+
+ dev_dbg(ipctl->dev, "pinconf set pin %s\n",
+ info->pins[pin_id].name);
+
+ for (i = 0; i < num_configs; i++) {
+ if (info->flags & SHARE_MUX_CONF_REG) {
+ u32 reg;
+ reg = readl(ipctl->base + pin_reg->conf_reg);
+ reg &= info->mux_mask;
+ reg |= configs[i];
+ writel(reg, ipctl->base + pin_reg->conf_reg);
+ dev_dbg(ipctl->dev, "write: offset 0x%x val 0x%x\n",
+ pin_reg->conf_reg, reg);
+ } else {
+ writel(configs[i], ipctl->base + pin_reg->conf_reg);
+ dev_dbg(ipctl->dev, "write: offset 0x%x val 0x%lx\n",
+ pin_reg->conf_reg, configs[i]);
+ }
+ } /* for each config */
+
+ return 0;
+}
+
+static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned pin_id)
+{
+ struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ const struct imx_pin_reg *pin_reg = &info->pin_regs[pin_id];
+ unsigned long config;
+
+ if (!pin_reg || pin_reg->conf_reg == -1) {
+ seq_printf(s, "N/A");
+ return;
+ }
+
+ config = readl(ipctl->base + pin_reg->conf_reg);
+ seq_printf(s, "0x%lx", config);
+}
+
+static void imx_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned group)
+{
+ struct group_desc *grp;
+ unsigned long config;
+ const char *name;
+ int i, ret;
+
+ if (group >= pctldev->num_groups)
+ return;
+
+ seq_printf(s, "\n");
+ grp = pinctrl_generic_get_group(pctldev, group);
+ if (!grp)
+ return;
+
+ for (i = 0; i < grp->num_pins; i++) {
+ struct imx_pin *pin = &((struct imx_pin *)(grp->data))[i];
+
+ name = pin_get_name(pctldev, pin->pin);
+ ret = imx_pinconf_get(pctldev, pin->pin, &config);
+ if (ret)
+ return;
+ seq_printf(s, " %s: 0x%lx\n", name, config);
+ }
+}
+
+static const struct pinconf_ops imx_pinconf_ops = {
+ .pin_config_get = imx_pinconf_get,
+ .pin_config_set = imx_pinconf_set,
+ .pin_config_dbg_show = imx_pinconf_dbg_show,
+ .pin_config_group_dbg_show = imx_pinconf_group_dbg_show,
+};
+
+/*
+ * Each pin represented in fsl,pins consists of 5 u32 PIN_FUNC_ID and
+ * 1 u32 CONFIG, so 24 types in total for each pin.
+ */
+#define FSL_PIN_SIZE 24
+#define SHARE_FSL_PIN_SIZE 20
+
+static int imx_pinctrl_parse_groups(struct device_node *np,
+ struct group_desc *grp,
+ struct imx_pinctrl *ipctl,
+ u32 index)
+{
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ int size, pin_size;
+ const __be32 *list;
+ int i;
+ u32 config;
+
+ dev_dbg(info->dev, "group(%d): %s\n", index, np->name);
+
+ if (info->flags & SHARE_MUX_CONF_REG)
+ pin_size = SHARE_FSL_PIN_SIZE;
+ else
+ pin_size = FSL_PIN_SIZE;
+
+ if (info->generic_pinconf)
+ pin_size -= 4;
+
+ /* Initialise group */
+ grp->name = np->name;
+
+ /*
+ * the binding format is fsl,pins = <PIN_FUNC_ID CONFIG ...>,
+ * do sanity check and calculate pins number
+ *
+ * First try legacy 'fsl,pins' property, then fall back to the
+ * generic 'pinmux'.
+ *
+ * Note: for generic 'pinmux' case, there's no CONFIG part in
+ * the binding format.
+ */
+ list = of_get_property(np, "fsl,pins", &size);
+ if (!list) {
+ list = of_get_property(np, "pinmux", &size);
+ if (!list) {
+ dev_err(info->dev,
+ "no fsl,pins and pins property in node %pOF\n", np);
+ return -EINVAL;
+ }
+ }
+
+ /* we do not check return since it's safe node passed down */
+ if (!size || size % pin_size) {
+ dev_err(info->dev, "Invalid fsl,pins or pins property in node %pOF\n", np);
+ return -EINVAL;
+ }
+
+ /* first try to parse the generic pin config */
+ config = imx_pinconf_parse_generic_config(np, ipctl);
+
+ grp->num_pins = size / pin_size;
+ grp->data = devm_kzalloc(info->dev, grp->num_pins *
+ sizeof(struct imx_pin), GFP_KERNEL);
+ grp->pins = devm_kzalloc(info->dev, grp->num_pins *
+ sizeof(unsigned int), GFP_KERNEL);
+ if (!grp->pins || !grp->data)
+ return -ENOMEM;
+
+ for (i = 0; i < grp->num_pins; i++) {
+ u32 mux_reg = be32_to_cpu(*list++);
+ u32 conf_reg;
+ unsigned int pin_id;
+ struct imx_pin_reg *pin_reg;
+ struct imx_pin *pin = &((struct imx_pin *)(grp->data))[i];
+
+ if (!(info->flags & ZERO_OFFSET_VALID) && !mux_reg)
+ mux_reg = -1;
+
+ if (info->flags & SHARE_MUX_CONF_REG) {
+ conf_reg = mux_reg;
+ } else {
+ conf_reg = be32_to_cpu(*list++);
+ if (!conf_reg)
+ conf_reg = -1;
+ }
+
+ pin_id = (mux_reg != -1) ? mux_reg / 4 : conf_reg / 4;
+ pin_reg = &info->pin_regs[pin_id];
+ pin->pin = pin_id;
+ grp->pins[i] = pin_id;
+ pin_reg->mux_reg = mux_reg;
+ pin_reg->conf_reg = conf_reg;
+ pin->input_reg = be32_to_cpu(*list++);
+ pin->mux_mode = be32_to_cpu(*list++);
+ pin->input_val = be32_to_cpu(*list++);
+
+ if (info->generic_pinconf) {
+ /* generic pin config decoded */
+ pin->config = config;
+ } else {
+ /* legacy pin config read from devicetree */
+ config = be32_to_cpu(*list++);
+
+ /* SION bit is in mux register */
+ if (config & IMX_PAD_SION)
+ pin->mux_mode |= IOMUXC_CONFIG_SION;
+ pin->config = config & ~IMX_PAD_SION;
+ }
+
+ dev_dbg(info->dev, "%s: 0x%x 0x%08lx", info->pins[pin_id].name,
+ pin->mux_mode, pin->config);
+ }
+
+ return 0;
+}
+
+static int imx_pinctrl_parse_functions(struct device_node *np,
+ struct imx_pinctrl *ipctl,
+ u32 index)
+{
+ struct pinctrl_dev *pctl = ipctl->pctl;
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ struct device_node *child;
+ struct function_desc *func;
+ struct group_desc *grp;
+ u32 i = 0;
+
+ dev_dbg(info->dev, "parse function(%d): %s\n", index, np->name);
+
+ func = pinmux_generic_get_function(pctl, index);
+ if (!func)
+ return -EINVAL;
+
+ /* Initialise function */
+ func->name = np->name;
+ func->num_group_names = of_get_child_count(np);
+ if (func->num_group_names == 0) {
+ dev_err(info->dev, "no groups defined in %pOF\n", np);
+ return -EINVAL;
+ }
+ func->group_names = devm_kcalloc(info->dev, func->num_group_names,
+ sizeof(char *), GFP_KERNEL);
+ if (!func->group_names)
+ return -ENOMEM;
+
+ for_each_child_of_node(np, child) {
+ func->group_names[i] = child->name;
+
+ grp = devm_kzalloc(info->dev, sizeof(struct group_desc),
+ GFP_KERNEL);
+ if (!grp)
+ return -ENOMEM;
+
+ mutex_lock(&info->mutex);
+ radix_tree_insert(&pctl->pin_group_tree,
+ info->group_index++, grp);
+ mutex_unlock(&info->mutex);
+
+ imx_pinctrl_parse_groups(child, grp, ipctl, i++);
+ }
+
+ return 0;
+}
+
+/*
+ * Check if the DT contains pins in the direct child nodes. This indicates the
+ * newer DT format to store pins. This function returns true if the first found
+ * fsl,pins property is in a child of np. Otherwise false is returned.
+ */
+static bool imx_pinctrl_dt_is_flat_functions(struct device_node *np)
+{
+ struct device_node *function_np;
+ struct device_node *pinctrl_np;
+
+ for_each_child_of_node(np, function_np) {
+ if (of_property_read_bool(function_np, "fsl,pins"))
+ return true;
+
+ for_each_child_of_node(function_np, pinctrl_np) {
+ if (of_property_read_bool(pinctrl_np, "fsl,pins"))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static int imx_pinctrl_probe_dt(struct platform_device *pdev,
+ struct imx_pinctrl *ipctl)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *child;
+ struct pinctrl_dev *pctl = ipctl->pctl;
+ struct imx_pinctrl_soc_info *info = ipctl->info;
+ u32 nfuncs = 0;
+ u32 i = 0;
+ bool flat_funcs;
+
+ if (!np)
+ return -ENODEV;
+
+ flat_funcs = imx_pinctrl_dt_is_flat_functions(np);
+ if (flat_funcs) {
+ nfuncs = 1;
+ } else {
+ nfuncs = of_get_child_count(np);
+ if (nfuncs <= 0) {
+ dev_err(&pdev->dev, "no functions defined\n");
+ return -EINVAL;
+ }
+ }
+
+ for (i = 0; i < nfuncs; i++) {
+ struct function_desc *function;
+
+ function = devm_kzalloc(&pdev->dev, sizeof(*function),
+ GFP_KERNEL);
+ if (!function)
+ return -ENOMEM;
+
+ mutex_lock(&info->mutex);
+ radix_tree_insert(&pctl->pin_function_tree, i, function);
+ mutex_unlock(&info->mutex);
+ }
+ pctl->num_functions = nfuncs;
+
+ info->group_index = 0;
+ if (flat_funcs) {
+ pctl->num_groups = of_get_child_count(np);
+ } else {
+ pctl->num_groups = 0;
+ for_each_child_of_node(np, child)
+ pctl->num_groups += of_get_child_count(child);
+ }
+
+ if (flat_funcs) {
+ imx_pinctrl_parse_functions(np, ipctl, 0);
+ } else {
+ i = 0;
+ for_each_child_of_node(np, child)
+ imx_pinctrl_parse_functions(child, ipctl, i++);
+ }
+
+ return 0;
+}
+
+int imx_pinctrl_probe(struct platform_device *pdev,
+ struct imx_pinctrl_soc_info *info)
+{
+ struct regmap_config config = { .name = "gpr" };
+ struct device_node *dev_np = pdev->dev.of_node;
+ struct pinctrl_desc *imx_pinctrl_desc;
+ struct device_node *np;
+ struct imx_pinctrl *ipctl;
+ struct resource *res;
+ struct regmap *gpr;
+ int ret, i;
+
+ if (!info || !info->pins || !info->npins) {
+ dev_err(&pdev->dev, "wrong pinctrl info\n");
+ return -EINVAL;
+ }
+ info->dev = &pdev->dev;
+
+ if (info->gpr_compatible) {
+ gpr = syscon_regmap_lookup_by_compatible(info->gpr_compatible);
+ if (!IS_ERR(gpr))
+ regmap_attach_dev(&pdev->dev, gpr, &config);
+ }
+
+ /* Create state holders etc for this driver */
+ ipctl = devm_kzalloc(&pdev->dev, sizeof(*ipctl), GFP_KERNEL);
+ if (!ipctl)
+ return -ENOMEM;
+
+ info->pin_regs = devm_kmalloc(&pdev->dev, sizeof(*info->pin_regs) *
+ info->npins, GFP_KERNEL);
+ if (!info->pin_regs)
+ return -ENOMEM;
+
+ for (i = 0; i < info->npins; i++) {
+ info->pin_regs[i].mux_reg = -1;
+ info->pin_regs[i].conf_reg = -1;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ipctl->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(ipctl->base))
+ return PTR_ERR(ipctl->base);
+
+ if (of_property_read_bool(dev_np, "fsl,input-sel")) {
+ np = of_parse_phandle(dev_np, "fsl,input-sel", 0);
+ if (!np) {
+ dev_err(&pdev->dev, "iomuxc fsl,input-sel property not found\n");
+ return -EINVAL;
+ }
+
+ ipctl->input_sel_base = of_iomap(np, 0);
+ of_node_put(np);
+ if (!ipctl->input_sel_base) {
+ dev_err(&pdev->dev,
+ "iomuxc input select base address not found\n");
+ return -ENOMEM;
+ }
+ }
+
+ imx_pinctrl_desc = devm_kzalloc(&pdev->dev, sizeof(*imx_pinctrl_desc),
+ GFP_KERNEL);
+ if (!imx_pinctrl_desc)
+ return -ENOMEM;
+
+ imx_pinctrl_desc->name = dev_name(&pdev->dev);
+ imx_pinctrl_desc->pins = info->pins;
+ imx_pinctrl_desc->npins = info->npins;
+ imx_pinctrl_desc->pctlops = &imx_pctrl_ops;
+ imx_pinctrl_desc->pmxops = &imx_pmx_ops;
+ imx_pinctrl_desc->confops = &imx_pinconf_ops;
+ imx_pinctrl_desc->owner = THIS_MODULE;
+
+ /* for generic pinconf */
+ imx_pinctrl_desc->custom_params = info->custom_params;
+ imx_pinctrl_desc->num_custom_params = info->num_custom_params;
+
+ /* platform specific callback */
+ imx_pmx_ops.gpio_set_direction = info->gpio_set_direction;
+
+ mutex_init(&info->mutex);
+
+ ipctl->info = info;
+ ipctl->dev = info->dev;
+ platform_set_drvdata(pdev, ipctl);
+ ret = devm_pinctrl_register_and_init(&pdev->dev,
+ imx_pinctrl_desc, ipctl,
+ &ipctl->pctl);
+ if (ret) {
+ dev_err(&pdev->dev, "could not register IMX pinctrl driver\n");
+ return ret;
+ }
+
+ ret = imx_pinctrl_probe_dt(pdev, ipctl);
+ if (ret) {
+ dev_err(&pdev->dev, "fail to probe dt properties\n");
+ return ret;
+ }
+
+ dev_info(&pdev->dev, "initialized IMX pinctrl driver\n");
+
+ return pinctrl_enable(ipctl->pctl);
+}