--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas RZ/G2L Pin Control and GPIO driver core
+ *
+ * Copyright (C) 2021 Renesas Electronics Corporation.
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/gpio/driver.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/spinlock.h>
+
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+#include "../core.h"
+#include "../pinconf.h"
+#include "../pinmux.h"
+
+#define DRV_NAME "pinctrl-rzg2l"
+
+/*
+ * Use 16 lower bits [15:0] for pin identifier
+ * Use 16 higher bits [31:16] for pin mux function
+ */
+#define MUX_PIN_ID_MASK GENMASK(15, 0)
+#define MUX_FUNC_MASK GENMASK(31, 16)
+#define MUX_FUNC_OFFS 16
+#define MUX_FUNC(pinconf) (((pinconf) & MUX_FUNC_MASK) >> MUX_FUNC_OFFS)
+
+/* PIN capabilities */
+#define PIN_CFG_IOLH BIT(0)
+#define PIN_CFG_SR BIT(1)
+#define PIN_CFG_IEN BIT(2)
+#define PIN_CFG_PUPD BIT(3)
+#define PIN_CFG_IOLH_SD0 BIT(4)
+#define PIN_CFG_IOLH_SD1 BIT(5)
+#define PIN_CFG_IOLH_QSPI BIT(6)
+#define PIN_CFG_IOLH_ETH0 BIT(7)
+#define PIN_CFG_IOLH_ETH1 BIT(8)
+#define PIN_CFG_FILONOFF BIT(9)
+#define PIN_CFG_FILNUM BIT(10)
+#define PIN_CFG_FILCLKSEL BIT(11)
+
+#define RZG2L_MPXED_PIN_FUNCS (PIN_CFG_IOLH | \
+ PIN_CFG_SR | \
+ PIN_CFG_PUPD | \
+ PIN_CFG_FILONOFF | \
+ PIN_CFG_FILNUM | \
+ PIN_CFG_FILCLKSEL)
+
+#define RZG2L_MPXED_ETH_PIN_FUNCS(x) ((x) | \
+ PIN_CFG_FILONOFF | \
+ PIN_CFG_FILNUM | \
+ PIN_CFG_FILCLKSEL)
+
+/*
+ * n indicates number of pins in the port, a is the register index
+ * and f is pin configuration capabilities supported.
+ */
+#define RZG2L_GPIO_PORT_PACK(n, a, f) (((n) << 28) | ((a) << 20) | (f))
+#define RZG2L_GPIO_PORT_GET_PINCNT(x) (((x) & GENMASK(30, 28)) >> 28)
+#define RZG2L_GPIO_PORT_GET_INDEX(x) (((x) & GENMASK(26, 20)) >> 20)
+#define RZG2L_GPIO_PORT_GET_CFGS(x) ((x) & GENMASK(19, 0))
+
+/*
+ * BIT(31) indicates dedicated pin, p is the register index while
+ * referencing to SR/IEN/IOLH/FILxx registers, b is the register bits
+ * (b * 8) and f is the pin configuration capabilities supported.
+ */
+#define RZG2L_SINGLE_PIN BIT(31)
+#define RZG2L_SINGLE_PIN_PACK(p, b, f) (RZG2L_SINGLE_PIN | \
+ ((p) << 24) | ((b) << 20) | (f))
+#define RZG2L_SINGLE_PIN_GET_PORT(x) (((x) & GENMASK(30, 24)) >> 24)
+#define RZG2L_SINGLE_PIN_GET_BIT(x) (((x) & GENMASK(22, 20)) >> 20)
+#define RZG2L_SINGLE_PIN_GET_CFGS(x) ((x) & GENMASK(19, 0))
+
+#define P(n) (0x0000 + 0x10 + (n))
+#define PM(n) (0x0100 + 0x20 + (n) * 2)
+#define PMC(n) (0x0200 + 0x10 + (n))
+#define PFC(n) (0x0400 + 0x40 + (n) * 4)
+#define PIN(n) (0x0800 + 0x10 + (n))
+#define IEN(n) (0x1800 + (n) * 8)
+#define PWPR (0x3014)
+#define SD_CH(n) (0x3000 + (n) * 4)
+#define QSPI (0x3008)
+
+#define PVDD_1800 1 /* I/O domain voltage <= 1.8V */
+#define PVDD_3300 0 /* I/O domain voltage >= 3.3V */
+
+#define PWPR_B0WI BIT(7) /* Bit Write Disable */
+#define PWPR_PFCWE BIT(6) /* PFC Register Write Enable */
+
+#define PM_MASK 0x03
+#define PVDD_MASK 0x01
+#define PFC_MASK 0x07
+#define IEN_MASK 0x01
+
+#define PM_INPUT 0x1
+#define PM_OUTPUT 0x2
+
+#define RZG2L_PIN_ID_TO_PORT(id) ((id) / RZG2L_PINS_PER_PORT)
+#define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT)
+
+struct rzg2l_dedicated_configs {
+ const char *name;
+ u32 config;
+};
+
+struct rzg2l_pinctrl_data {
+ const char * const *port_pins;
+ const u32 *port_pin_configs;
+ struct rzg2l_dedicated_configs *dedicated_pins;
+ unsigned int n_port_pins;
+ unsigned int n_dedicated_pins;
+};
+
+struct rzg2l_pinctrl {
+ struct pinctrl_dev *pctl;
+ struct pinctrl_desc desc;
+ struct pinctrl_pin_desc *pins;
+
+ const struct rzg2l_pinctrl_data *data;
+ void __iomem *base;
+ struct device *dev;
+ struct clk *clk;
+
+ struct gpio_chip gpio_chip;
+ struct pinctrl_gpio_range gpio_range;
+
+ spinlock_t lock;
+};
+
+static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
+ u8 port, u8 pin, u8 func)
+{
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ /* Set pin to 'Non-use (Hi-Z input protection)' */
+ reg = readw(pctrl->base + PM(port));
+ reg &= ~(PM_MASK << (pin * 2));
+ writew(reg, pctrl->base + PM(port));
+
+ /* Temporarily switch to GPIO mode with PMC register */
+ reg = readb(pctrl->base + PMC(port));
+ writeb(reg & ~BIT(pin), pctrl->base + PMC(port));
+
+ /* Set the PWPR register to allow PFC register to write */
+ writel(0x0, pctrl->base + PWPR); /* B0WI=0, PFCWE=0 */
+ writel(PWPR_PFCWE, pctrl->base + PWPR); /* B0WI=0, PFCWE=1 */
+
+ /* Select Pin function mode with PFC register */
+ reg = readl(pctrl->base + PFC(port));
+ reg &= ~(PFC_MASK << (pin * 4));
+ writel(reg | (func << (pin * 4)), pctrl->base + PFC(port));
+
+ /* Set the PWPR register to be write-protected */
+ writel(0x0, pctrl->base + PWPR); /* B0WI=0, PFCWE=0 */
+ writel(PWPR_B0WI, pctrl->base + PWPR); /* B0WI=1, PFCWE=0 */
+
+ /* Switch to Peripheral pin function with PMC register */
+ reg = readb(pctrl->base + PMC(port));
+ writeb(reg | BIT(pin), pctrl->base + PMC(port));
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+};
+
+static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
+ unsigned int func_selector,
+ unsigned int group_selector)
+{
+ struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ struct function_desc *func;
+ unsigned int i, *psel_val;
+ struct group_desc *group;
+ int *pins;
+
+ func = pinmux_generic_get_function(pctldev, func_selector);
+ if (!func)
+ return -EINVAL;
+ group = pinctrl_generic_get_group(pctldev, group_selector);
+ if (!group)
+ return -EINVAL;
+
+ psel_val = func->data;
+ pins = group->pins;
+
+ for (i = 0; i < group->num_pins; i++) {
+ dev_dbg(pctrl->dev, "port:%u pin: %u PSEL:%u\n",
+ RZG2L_PIN_ID_TO_PORT(pins[i]), RZG2L_PIN_ID_TO_PIN(pins[i]),
+ psel_val[i]);
+ rzg2l_pinctrl_set_pfc_mode(pctrl, RZG2L_PIN_ID_TO_PORT(pins[i]),
+ RZG2L_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
+ }
+
+ return 0;
+};
+
+static int rzg2l_map_add_config(struct pinctrl_map *map,
+ const char *group_or_pin,
+ enum pinctrl_map_type type,
+ unsigned long *configs,
+ unsigned int num_configs)
+{
+ unsigned long *cfgs;
+
+ cfgs = kmemdup(configs, num_configs * sizeof(*cfgs),
+ GFP_KERNEL);
+ if (!cfgs)
+ return -ENOMEM;
+
+ map->type = type;
+ map->data.configs.group_or_pin = group_or_pin;
+ map->data.configs.configs = cfgs;
+ map->data.configs.num_configs = num_configs;
+
+ return 0;
+}
+
+static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **map,
+ unsigned int *num_maps,
+ unsigned int *index)
+{
+ struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ struct pinctrl_map *maps = *map;
+ unsigned int nmaps = *num_maps;
+ unsigned long *configs = NULL;
+ unsigned int *pins, *psel_val;
+ unsigned int num_pinmux = 0;
+ unsigned int idx = *index;
+ unsigned int num_pins, i;
+ unsigned int num_configs;
+ struct property *pinmux;
+ struct property *prop;
+ int ret, gsel, fsel;
+ const char **pin_fn;
+ const char *pin;
+
+ pinmux = of_find_property(np, "pinmux", NULL);
+ if (pinmux)
+ num_pinmux = pinmux->length / sizeof(u32);
+
+ ret = of_property_count_strings(np, "pins");
+ if (ret == -EINVAL) {
+ num_pins = 0;
+ } else if (ret < 0) {
+ dev_err(pctrl->dev, "Invalid pins list in DT\n");
+ return ret;
+ } else {
+ num_pins = ret;
+ }
+
+ if (!num_pinmux && !num_pins)
+ return 0;
+
+ if (num_pinmux && num_pins) {
+ dev_err(pctrl->dev,
+ "DT node must contain either a pinmux or pins and not both\n");
+ return -EINVAL;
+ }
+
+ ret = pinconf_generic_parse_dt_config(np, NULL, &configs, &num_configs);
+ if (ret < 0)
+ return ret;
+
+ if (num_pins && !num_configs) {
+ dev_err(pctrl->dev, "DT node must contain a config\n");
+ ret = -ENODEV;
+ goto done;
+ }
+
+ if (num_pinmux)
+ nmaps += 1;
+
+ if (num_pins)
+ nmaps += num_pins;
+
+ maps = krealloc_array(maps, nmaps, sizeof(*maps), GFP_KERNEL);
+ if (!maps) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ *map = maps;
+ *num_maps = nmaps;
+ if (num_pins) {
+ of_property_for_each_string(np, "pins", prop, pin) {
+ ret = rzg2l_map_add_config(&maps[idx], pin,
+ PIN_MAP_TYPE_CONFIGS_PIN,
+ configs, num_configs);
+ if (ret < 0)
+ goto done;
+
+ idx++;
+ }
+ ret = 0;
+ goto done;
+ }
+
+ pins = devm_kcalloc(pctrl->dev, num_pinmux, sizeof(*pins), GFP_KERNEL);
+ psel_val = devm_kcalloc(pctrl->dev, num_pinmux, sizeof(*psel_val),
+ GFP_KERNEL);
+ pin_fn = devm_kzalloc(pctrl->dev, sizeof(*pin_fn), GFP_KERNEL);
+ if (!pins || !psel_val || !pin_fn) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ /* Collect pin locations and mux settings from DT properties */
+ for (i = 0; i < num_pinmux; ++i) {
+ u32 value;
+
+ ret = of_property_read_u32_index(np, "pinmux", i, &value);
+ if (ret)
+ goto done;
+ pins[i] = value & MUX_PIN_ID_MASK;
+ psel_val[i] = MUX_FUNC(value);
+ }
+
+ /* Register a single pin group listing all the pins we read from DT */
+ gsel = pinctrl_generic_add_group(pctldev, np->name, pins, num_pinmux, NULL);
+ if (gsel < 0) {
+ ret = gsel;
+ goto done;
+ }
+
+ /*
+ * Register a single group function where the 'data' is an array PSEL
+ * register values read from DT.
+ */
+ pin_fn[0] = np->name;
+ fsel = pinmux_generic_add_function(pctldev, np->name, pin_fn, 1,
+ psel_val);
+ if (fsel < 0) {
+ ret = fsel;
+ goto remove_group;
+ }
+
+ maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
+ maps[idx].data.mux.group = np->name;
+ maps[idx].data.mux.function = np->name;
+ idx++;
+
+ dev_dbg(pctrl->dev, "Parsed %pOF with %d pins\n", np, num_pinmux);
+ ret = 0;
+ goto done;
+
+remove_group:
+ pinctrl_generic_remove_group(pctldev, gsel);
+done:
+ *index = idx;
+ kfree(configs);
+ return ret;
+}
+
+static void rzg2l_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map,
+ unsigned int num_maps)
+{
+ unsigned int i;
+
+ if (!map)
+ return;
+
+ for (i = 0; i < num_maps; ++i) {
+ if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP ||
+ map[i].type == PIN_MAP_TYPE_CONFIGS_PIN)
+ kfree(map[i].data.configs.configs);
+ }
+ kfree(map);
+}
+
+static int rzg2l_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **map,
+ unsigned int *num_maps)
+{
+ struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ struct device_node *child;
+ unsigned int index;
+ int ret;
+
+ *map = NULL;
+ *num_maps = 0;
+ index = 0;
+
+ for_each_child_of_node(np, child) {
+ ret = rzg2l_dt_subnode_to_map(pctldev, child, map,
+ num_maps, &index);
+ if (ret < 0) {
+ of_node_put(child);
+ goto done;
+ }
+ }
+
+ if (*num_maps == 0) {
+ ret = rzg2l_dt_subnode_to_map(pctldev, np, map,
+ num_maps, &index);
+ if (ret < 0)
+ goto done;
+ }
+
+ if (*num_maps)
+ return 0;
+
+ dev_err(pctrl->dev, "no mapping found in node %pOF\n", np);
+ ret = -EINVAL;
+
+done:
+ if (ret < 0)
+ rzg2l_dt_free_map(pctldev, *map, *num_maps);
+
+ return ret;
+}
+
+static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
+ unsigned int _pin,
+ unsigned long *config)
+{
+ struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ enum pin_config_param param = pinconf_to_config_param(*config);
+ const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
+ unsigned int *pin_data = pin->drv_data;
+ unsigned int arg = 0;
+ unsigned long flags;
+ void __iomem *addr;
+ u32 port = 0, reg;
+ u32 cfg = 0;
+ u8 bit = 0;
+
+ if (!pin_data)
+ return -EINVAL;
+
+ if (*pin_data & RZG2L_SINGLE_PIN) {
+ port = RZG2L_SINGLE_PIN_GET_PORT(*pin_data);
+ cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
+ bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
+ }
+
+ switch (param) {
+ case PIN_CONFIG_INPUT_ENABLE:
+ if (!(cfg & PIN_CFG_IEN))
+ return -EINVAL;
+ spin_lock_irqsave(&pctrl->lock, flags);
+ /* handle _L/_H for 32-bit register read/write */
+ addr = pctrl->base + IEN(port);
+ if (bit >= 4) {
+ bit -= 4;
+ addr += 4;
+ }
+
+ reg = readl(addr) & (IEN_MASK << (bit * 8));
+ arg = (reg >> (bit * 8)) & 0x1;
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ break;
+
+ case PIN_CONFIG_POWER_SOURCE: {
+ u32 pwr_reg = 0x0;
+
+ if (cfg & PIN_CFG_IOLH_SD0)
+ pwr_reg = SD_CH(0);
+ else if (cfg & PIN_CFG_IOLH_SD1)
+ pwr_reg = SD_CH(1);
+ else if (cfg & PIN_CFG_IOLH_QSPI)
+ pwr_reg = QSPI;
+ else
+ return -EINVAL;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+ addr = pctrl->base + pwr_reg;
+ arg = (readl(addr) & PVDD_MASK) ? 1800 : 3300;
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ break;
+ }
+
+ default:
+ return -ENOTSUPP;
+ }
+
+ *config = pinconf_to_config_packed(param, arg);
+
+ return 0;
+};
+
+static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned int _pin,
+ unsigned long *_configs,
+ unsigned int num_configs)
+{
+ struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
+ unsigned int *pin_data = pin->drv_data;
+ enum pin_config_param param;
+ unsigned long flags;
+ void __iomem *addr;
+ u32 port = 0, reg;
+ unsigned int i;
+ u32 cfg = 0;
+ u8 bit = 0;
+
+ if (!pin_data)
+ return -EINVAL;
+
+ if (*pin_data & RZG2L_SINGLE_PIN) {
+ port = RZG2L_SINGLE_PIN_GET_PORT(*pin_data);
+ cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
+ bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
+ }
+
+ for (i = 0; i < num_configs; i++) {
+ param = pinconf_to_config_param(_configs[i]);
+ switch (param) {
+ case PIN_CONFIG_INPUT_ENABLE: {
+ unsigned int arg =
+ pinconf_to_config_argument(_configs[i]);
+
+ if (!(cfg & PIN_CFG_IEN))
+ return -EINVAL;
+
+ /* handle _L/_H for 32-bit register read/write */
+ addr = pctrl->base + IEN(port);
+ if (bit >= 4) {
+ bit -= 4;
+ addr += 4;
+ }
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+ reg = readl(addr) & ~(IEN_MASK << (bit * 8));
+ writel(reg | (arg << (bit * 8)), addr);
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ break;
+ }
+
+ case PIN_CONFIG_POWER_SOURCE: {
+ unsigned int mV = pinconf_to_config_argument(_configs[i]);
+ u32 pwr_reg = 0x0;
+
+ if (mV != 1800 && mV != 3300)
+ return -EINVAL;
+
+ if (cfg & PIN_CFG_IOLH_SD0)
+ pwr_reg = SD_CH(0);
+ else if (cfg & PIN_CFG_IOLH_SD1)
+ pwr_reg = SD_CH(1);
+ else if (cfg & PIN_CFG_IOLH_QSPI)
+ pwr_reg = QSPI;
+ else
+ return -EINVAL;
+
+ addr = pctrl->base + pwr_reg;
+ spin_lock_irqsave(&pctrl->lock, flags);
+ writel((mV == 1800) ? PVDD_1800 : PVDD_3300, addr);
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+ break;
+ }
+ default:
+ return -EOPNOTSUPP;
+ }
+ }
+
+ return 0;
+}
+
+static int rzg2l_pinctrl_pinconf_group_set(struct pinctrl_dev *pctldev,
+ unsigned int group,
+ unsigned long *configs,
+ unsigned int num_configs)
+{
+ const unsigned int *pins;
+ unsigned int i, npins;
+ int ret;
+
+ ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < npins; i++) {
+ ret = rzg2l_pinctrl_pinconf_set(pctldev, pins[i], configs,
+ num_configs);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+};
+
+static int rzg2l_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
+ unsigned int group,
+ unsigned long *config)
+{
+ const unsigned int *pins;
+ unsigned int i, npins, prev_config = 0;
+ int ret;
+
+ ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < npins; i++) {
+ ret = rzg2l_pinctrl_pinconf_get(pctldev, pins[i], config);
+ if (ret)
+ return ret;
+
+ /* Check config matching between to pin */
+ if (i && prev_config != *config)
+ return -EOPNOTSUPP;
+
+ prev_config = *config;
+ }
+
+ return 0;
+};
+
+static const struct pinctrl_ops rzg2l_pinctrl_pctlops = {
+ .get_groups_count = pinctrl_generic_get_group_count,
+ .get_group_name = pinctrl_generic_get_group_name,
+ .get_group_pins = pinctrl_generic_get_group_pins,
+ .dt_node_to_map = rzg2l_dt_node_to_map,
+ .dt_free_map = rzg2l_dt_free_map,
+};
+
+static const struct pinmux_ops rzg2l_pinctrl_pmxops = {
+ .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 = rzg2l_pinctrl_set_mux,
+ .strict = true,
+};
+
+static const struct pinconf_ops rzg2l_pinctrl_confops = {
+ .is_generic = true,
+ .pin_config_get = rzg2l_pinctrl_pinconf_get,
+ .pin_config_set = rzg2l_pinctrl_pinconf_set,
+ .pin_config_group_set = rzg2l_pinctrl_pinconf_group_set,
+ .pin_config_group_get = rzg2l_pinctrl_pinconf_group_get,
+ .pin_config_config_dbg_show = pinconf_generic_dump_config,
+};
+
+static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
+{
+ struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+ u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
+ unsigned long flags;
+ u8 reg8;
+ int ret;
+
+ ret = pinctrl_gpio_request(chip->base + offset);
+ if (ret)
+ return ret;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ /* Select GPIO mode in PMC Register */
+ reg8 = readb(pctrl->base + PMC(port));
+ reg8 &= ~BIT(bit);
+ writeb(reg8, pctrl->base + PMC(port));
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+}
+
+static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 port,
+ u8 bit, bool output)
+{
+ unsigned long flags;
+ u16 reg16;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ reg16 = readw(pctrl->base + PM(port));
+ reg16 &= ~(PM_MASK << (bit * 2));
+
+ reg16 |= (output ? PM_OUTPUT : PM_INPUT) << (bit * 2);
+ writew(reg16, pctrl->base + PM(port));
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+}
+
+static int rzg2l_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+ struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+ u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
+
+ if (!(readb(pctrl->base + PMC(port)) & BIT(bit))) {
+ u16 reg16;
+
+ reg16 = readw(pctrl->base + PM(port));
+ reg16 = (reg16 >> (bit * 2)) & PM_MASK;
+ if (reg16 == PM_OUTPUT)
+ return GPIO_LINE_DIRECTION_OUT;
+ }
+
+ return GPIO_LINE_DIRECTION_IN;
+}
+
+static int rzg2l_gpio_direction_input(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+ u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
+
+ rzg2l_gpio_set_direction(pctrl, port, bit, false);
+
+ return 0;
+}
+
+static void rzg2l_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+ u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
+ unsigned long flags;
+ u8 reg8;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+
+ reg8 = readb(pctrl->base + P(port));
+
+ if (value)
+ writeb(reg8 | BIT(bit), pctrl->base + P(port));
+ else
+ writeb(reg8 & ~BIT(bit), pctrl->base + P(port));
+
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+}
+
+static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+ u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
+
+ rzg2l_gpio_set(chip, offset, value);
+ rzg2l_gpio_set_direction(pctrl, port, bit, true);
+
+ return 0;
+}
+
+static int rzg2l_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+ u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
+ u16 reg16;
+
+ reg16 = readw(pctrl->base + PM(port));
+ reg16 = (reg16 >> (bit * 2)) & PM_MASK;
+
+ if (reg16 == PM_INPUT)
+ return !!(readb(pctrl->base + PIN(port)) & BIT(bit));
+ else if (reg16 == PM_OUTPUT)
+ return !!(readb(pctrl->base + P(port)) & BIT(bit));
+ else
+ return -EINVAL;
+}
+
+static void rzg2l_gpio_free(struct gpio_chip *chip, unsigned int offset)
+{
+ pinctrl_gpio_free(chip->base + offset);
+
+ /*
+ * Set the GPIO as an input to ensure that the next GPIO request won't
+ * drive the GPIO pin as an output.
+ */
+ rzg2l_gpio_direction_input(chip, offset);
+}
+
+static const char * const rzg2l_gpio_names[] = {
+ "P0_0", "P0_1", "P0_2", "P0_3", "P0_4", "P0_5", "P0_6", "P0_7",
+ "P1_0", "P1_1", "P1_2", "P1_3", "P1_4", "P1_5", "P1_6", "P1_7",
+ "P2_0", "P2_1", "P2_2", "P2_3", "P2_4", "P2_5", "P2_6", "P2_7",
+ "P3_0", "P3_1", "P3_2", "P3_3", "P3_4", "P3_5", "P3_6", "P3_7",
+ "P4_0", "P4_1", "P4_2", "P4_3", "P4_4", "P4_5", "P4_6", "P4_7",
+ "P5_0", "P5_1", "P5_2", "P5_3", "P5_4", "P5_5", "P5_6", "P5_7",
+ "P6_0", "P6_1", "P6_2", "P6_3", "P6_4", "P6_5", "P6_6", "P6_7",
+ "P7_0", "P7_1", "P7_2", "P7_3", "P7_4", "P7_5", "P7_6", "P7_7",
+ "P8_0", "P8_1", "P8_2", "P8_3", "P8_4", "P8_5", "P8_6", "P8_7",
+ "P9_0", "P9_1", "P9_2", "P9_3", "P9_4", "P9_5", "P9_6", "P9_7",
+ "P10_0", "P10_1", "P10_2", "P10_3", "P10_4", "P10_5", "P10_6", "P10_7",
+ "P11_0", "P11_1", "P11_2", "P11_3", "P11_4", "P11_5", "P11_6", "P11_7",
+ "P12_0", "P12_1", "P12_2", "P12_3", "P12_4", "P12_5", "P12_6", "P12_7",
+ "P13_0", "P13_1", "P13_2", "P13_3", "P13_4", "P13_5", "P13_6", "P13_7",
+ "P14_0", "P14_1", "P14_2", "P14_3", "P14_4", "P14_5", "P14_6", "P14_7",
+ "P15_0", "P15_1", "P15_2", "P15_3", "P15_4", "P15_5", "P15_6", "P15_7",
+ "P16_0", "P16_1", "P16_2", "P16_3", "P16_4", "P16_5", "P16_6", "P16_7",
+ "P17_0", "P17_1", "P17_2", "P17_3", "P17_4", "P17_5", "P17_6", "P17_7",
+ "P18_0", "P18_1", "P18_2", "P18_3", "P18_4", "P18_5", "P18_6", "P18_7",
+ "P19_0", "P19_1", "P19_2", "P19_3", "P19_4", "P19_5", "P19_6", "P19_7",
+ "P20_0", "P20_1", "P20_2", "P20_3", "P20_4", "P20_5", "P20_6", "P20_7",
+ "P21_0", "P21_1", "P21_2", "P21_3", "P21_4", "P21_5", "P21_6", "P21_7",
+ "P22_0", "P22_1", "P22_2", "P22_3", "P22_4", "P22_5", "P22_6", "P22_7",
+ "P23_0", "P23_1", "P23_2", "P23_3", "P23_4", "P23_5", "P23_6", "P23_7",
+ "P24_0", "P24_1", "P24_2", "P24_3", "P24_4", "P24_5", "P24_6", "P24_7",
+ "P25_0", "P25_1", "P25_2", "P25_3", "P25_4", "P25_5", "P25_6", "P25_7",
+ "P26_0", "P26_1", "P26_2", "P26_3", "P26_4", "P26_5", "P26_6", "P26_7",
+ "P27_0", "P27_1", "P27_2", "P27_3", "P27_4", "P27_5", "P27_6", "P27_7",
+ "P28_0", "P28_1", "P28_2", "P28_3", "P28_4", "P28_5", "P28_6", "P28_7",
+ "P29_0", "P29_1", "P29_2", "P29_3", "P29_4", "P29_5", "P29_6", "P29_7",
+ "P30_0", "P30_1", "P30_2", "P30_3", "P30_4", "P30_5", "P30_6", "P30_7",
+ "P31_0", "P31_1", "P31_2", "P31_3", "P31_4", "P31_5", "P31_6", "P31_7",
+ "P32_0", "P32_1", "P32_2", "P32_3", "P32_4", "P32_5", "P32_6", "P32_7",
+ "P33_0", "P33_1", "P33_2", "P33_3", "P33_4", "P33_5", "P33_6", "P33_7",
+ "P34_0", "P34_1", "P34_2", "P34_3", "P34_4", "P34_5", "P34_6", "P34_7",
+ "P35_0", "P35_1", "P35_2", "P35_3", "P35_4", "P35_5", "P35_6", "P35_7",
+ "P36_0", "P36_1", "P36_2", "P36_3", "P36_4", "P36_5", "P36_6", "P36_7",
+ "P37_0", "P37_1", "P37_2", "P37_3", "P37_4", "P37_5", "P37_6", "P37_7",
+ "P38_0", "P38_1", "P38_2", "P38_3", "P38_4", "P38_5", "P38_6", "P38_7",
+ "P39_0", "P39_1", "P39_2", "P39_3", "P39_4", "P39_5", "P39_6", "P39_7",
+ "P40_0", "P40_1", "P40_2", "P40_3", "P40_4", "P40_5", "P40_6", "P40_7",
+ "P41_0", "P41_1", "P41_2", "P41_3", "P41_4", "P41_5", "P41_6", "P41_7",
+ "P42_0", "P42_1", "P42_2", "P42_3", "P42_4", "P42_5", "P42_6", "P42_7",
+ "P43_0", "P43_1", "P43_2", "P43_3", "P43_4", "P43_5", "P43_6", "P43_7",
+ "P44_0", "P44_1", "P44_2", "P44_3", "P44_4", "P44_5", "P44_6", "P44_7",
+ "P45_0", "P45_1", "P45_2", "P45_3", "P45_4", "P45_5", "P45_6", "P45_7",
+ "P46_0", "P46_1", "P46_2", "P46_3", "P46_4", "P46_5", "P46_6", "P46_7",
+ "P47_0", "P47_1", "P47_2", "P47_3", "P47_4", "P47_5", "P47_6", "P47_7",
+ "P48_0", "P48_1", "P48_2", "P48_3", "P48_4", "P48_5", "P48_6", "P48_7",
+};
+
+static const u32 rzg2l_gpio_configs[] = {
+ RZG2L_GPIO_PORT_PACK(2, 0x10, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x11, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x12, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x13, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x14, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x15, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x16, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x17, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x18, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x19, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x1a, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x1b, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x1c, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x1d, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x1e, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x1f, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x20, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x22, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x22, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x23, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x24, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x25, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x26, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x27, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x28, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x29, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x2a, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x2b, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x2c, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH0)),
+ RZG2L_GPIO_PORT_PACK(2, 0x2d, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x2e, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x2f, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(3, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_ETH1)),
+ RZG2L_GPIO_PORT_PACK(2, 0x36, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x37, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(3, 0x38, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(2, 0x39, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(5, 0x3a, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(4, 0x3b, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(4, 0x3c, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(4, 0x3d, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(4, 0x3e, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(4, 0x3f, RZG2L_MPXED_PIN_FUNCS),
+ RZG2L_GPIO_PORT_PACK(5, 0x40, RZG2L_MPXED_PIN_FUNCS),
+};
+
+static struct rzg2l_dedicated_configs rzg2l_dedicated_pins[] = {
+ { "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0,
+ (PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL)) },
+ { "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x2, 0,
+ (PIN_CFG_SR | PIN_CFG_IOLH | PIN_CFG_IEN)) },
+ { "TDO", RZG2L_SINGLE_PIN_PACK(0x3, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN)) },
+ { "AUDIO_CLK1", RZG2L_SINGLE_PIN_PACK(0x4, 0, PIN_CFG_IEN) },
+ { "AUDIO_CLK2", RZG2L_SINGLE_PIN_PACK(0x4, 1, PIN_CFG_IEN) },
+ { "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x6, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_SD0)) },
+ { "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x6, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x6, 2,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x7, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x7, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x7, 2,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x7, 3,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x7, 4,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x7, 5,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x7, 6,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x7, 7,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD0)) },
+ { "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x8, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_SD1))},
+ { "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x8, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD1)) },
+ { "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x9, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD1)) },
+ { "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x9, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD1)) },
+ { "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x9, 2,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD1)) },
+ { "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x9, 3,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IOLH_SD1)) },
+ { "QSPI0_SPCLK", RZG2L_SINGLE_PIN_PACK(0xa, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI0_IO0", RZG2L_SINGLE_PIN_PACK(0xa, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI0_IO1", RZG2L_SINGLE_PIN_PACK(0xa, 2,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI0_IO2", RZG2L_SINGLE_PIN_PACK(0xa, 3,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI0_IO3", RZG2L_SINGLE_PIN_PACK(0xa, 4,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI0_SSL", RZG2L_SINGLE_PIN_PACK(0xa, 5,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI1_SPCLK", RZG2L_SINGLE_PIN_PACK(0xb, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI1_IO0", RZG2L_SINGLE_PIN_PACK(0xb, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI1_IO1", RZG2L_SINGLE_PIN_PACK(0xb, 2,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI1_IO2", RZG2L_SINGLE_PIN_PACK(0xb, 3,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI1_IO3", RZG2L_SINGLE_PIN_PACK(0xb, 4,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI1_SSL", RZG2L_SINGLE_PIN_PACK(0xb, 5,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI_RESET#", RZG2L_SINGLE_PIN_PACK(0xc, 0,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI_WP#", RZG2L_SINGLE_PIN_PACK(0xc, 1,
+ (PIN_CFG_IOLH | PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "QSPI_INT#", RZG2L_SINGLE_PIN_PACK(0xc, 2, (PIN_CFG_SR | PIN_CFG_IOLH_QSPI)) },
+ { "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0xd, 0, (PIN_CFG_IOLH | PIN_CFG_SR)) },
+ { "RIIC0_SDA", RZG2L_SINGLE_PIN_PACK(0xe, 0, PIN_CFG_IEN) },
+ { "RIIC0_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 1, PIN_CFG_IEN) },
+ { "RIIC1_SDA", RZG2L_SINGLE_PIN_PACK(0xe, 2, PIN_CFG_IEN) },
+ { "RIIC1_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 3, PIN_CFG_IEN) },
+};
+
+static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
+{
+ struct device_node *np = pctrl->dev->of_node;
+ struct gpio_chip *chip = &pctrl->gpio_chip;
+ const char *name = dev_name(pctrl->dev);
+ struct of_phandle_args of_args;
+ int ret;
+
+ ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &of_args);
+ if (ret) {
+ dev_err(pctrl->dev, "Unable to parse gpio-ranges\n");
+ return ret;
+ }
+
+ if (of_args.args[0] != 0 || of_args.args[1] != 0 ||
+ of_args.args[2] != ARRAY_SIZE(rzg2l_gpio_names)) {
+ dev_err(pctrl->dev, "gpio-ranges does not match selected SOC\n");
+ return -EINVAL;
+ }
+
+ chip->names = rzg2l_gpio_names;
+ chip->request = rzg2l_gpio_request;
+ chip->free = rzg2l_gpio_free;
+ chip->get_direction = rzg2l_gpio_get_direction;
+ chip->direction_input = rzg2l_gpio_direction_input;
+ chip->direction_output = rzg2l_gpio_direction_output;
+ chip->get = rzg2l_gpio_get;
+ chip->set = rzg2l_gpio_set;
+ chip->label = name;
+ chip->parent = pctrl->dev;
+ chip->owner = THIS_MODULE;
+ chip->base = -1;
+ chip->ngpio = of_args.args[2];
+
+ pctrl->gpio_range.id = 0;
+ pctrl->gpio_range.pin_base = 0;
+ pctrl->gpio_range.base = 0;
+ pctrl->gpio_range.npins = chip->ngpio;
+ pctrl->gpio_range.name = chip->label;
+ pctrl->gpio_range.gc = chip;
+ ret = devm_gpiochip_add_data(pctrl->dev, chip, pctrl);
+ if (ret) {
+ dev_err(pctrl->dev, "failed to add GPIO controller\n");
+ return ret;
+ }
+
+ dev_dbg(pctrl->dev, "Registered gpio controller\n");
+
+ return 0;
+}
+
+static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
+{
+ struct pinctrl_pin_desc *pins;
+ unsigned int i, j;
+ u32 *pin_data;
+ int ret;
+
+ pctrl->desc.name = DRV_NAME;
+ pctrl->desc.npins = pctrl->data->n_port_pins + pctrl->data->n_dedicated_pins;
+ pctrl->desc.pctlops = &rzg2l_pinctrl_pctlops;
+ pctrl->desc.pmxops = &rzg2l_pinctrl_pmxops;
+ pctrl->desc.confops = &rzg2l_pinctrl_confops;
+ pctrl->desc.owner = THIS_MODULE;
+
+ pins = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pins), GFP_KERNEL);
+ if (!pins)
+ return -ENOMEM;
+
+ pin_data = devm_kcalloc(pctrl->dev, pctrl->desc.npins,
+ sizeof(*pin_data), GFP_KERNEL);
+ if (!pin_data)
+ return -ENOMEM;
+
+ pctrl->pins = pins;
+ pctrl->desc.pins = pins;
+
+ for (i = 0, j = 0; i < pctrl->data->n_port_pins; i++) {
+ pins[i].number = i;
+ pins[i].name = pctrl->data->port_pins[i];
+ if (i && !(i % RZG2L_PINS_PER_PORT))
+ j++;
+ pin_data[i] = pctrl->data->port_pin_configs[j];
+ pins[i].drv_data = &pin_data[i];
+ }
+
+ for (i = 0; i < pctrl->data->n_dedicated_pins; i++) {
+ unsigned int index = pctrl->data->n_port_pins + i;
+
+ pins[index].number = index;
+ pins[index].name = pctrl->data->dedicated_pins[i].name;
+ pin_data[index] = pctrl->data->dedicated_pins[i].config;
+ pins[index].drv_data = &pin_data[index];
+ }
+
+ ret = devm_pinctrl_register_and_init(pctrl->dev, &pctrl->desc, pctrl,
+ &pctrl->pctl);
+ if (ret) {
+ dev_err(pctrl->dev, "pinctrl registration failed\n");
+ return ret;
+ }
+
+ ret = pinctrl_enable(pctrl->pctl);
+ if (ret) {
+ dev_err(pctrl->dev, "pinctrl enable failed\n");
+ return ret;
+ }
+
+ ret = rzg2l_gpio_register(pctrl);
+ if (ret) {
+ dev_err(pctrl->dev, "failed to add GPIO chip: %i\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void rzg2l_pinctrl_clk_disable(void *data)
+{
+ clk_disable_unprepare(data);
+}
+
+static int rzg2l_pinctrl_probe(struct platform_device *pdev)
+{
+ struct rzg2l_pinctrl *pctrl;
+ int ret;
+
+ pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
+ if (!pctrl)
+ return -ENOMEM;
+
+ pctrl->dev = &pdev->dev;
+
+ pctrl->data = of_device_get_match_data(&pdev->dev);
+ if (!pctrl->data)
+ return -EINVAL;
+
+ pctrl->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(pctrl->base))
+ return PTR_ERR(pctrl->base);
+
+ pctrl->clk = devm_clk_get(pctrl->dev, NULL);
+ if (IS_ERR(pctrl->clk)) {
+ ret = PTR_ERR(pctrl->clk);
+ dev_err(pctrl->dev, "failed to get GPIO clk : %i\n", ret);
+ return ret;
+ }
+
+ spin_lock_init(&pctrl->lock);
+
+ platform_set_drvdata(pdev, pctrl);
+
+ ret = clk_prepare_enable(pctrl->clk);
+ if (ret) {
+ dev_err(pctrl->dev, "failed to enable GPIO clk: %i\n", ret);
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&pdev->dev, rzg2l_pinctrl_clk_disable,
+ pctrl->clk);
+ if (ret) {
+ dev_err(pctrl->dev,
+ "failed to register GPIO clk disable action, %i\n",
+ ret);
+ return ret;
+ }
+
+ ret = rzg2l_pinctrl_register(pctrl);
+ if (ret)
+ return ret;
+
+ dev_info(pctrl->dev, "%s support registered\n", DRV_NAME);
+ return 0;
+}
+
+static struct rzg2l_pinctrl_data r9a07g044_data = {
+ .port_pins = rzg2l_gpio_names,
+ .port_pin_configs = rzg2l_gpio_configs,
+ .dedicated_pins = rzg2l_dedicated_pins,
+ .n_port_pins = ARRAY_SIZE(rzg2l_gpio_names),
+ .n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins),
+};
+
+static const struct of_device_id rzg2l_pinctrl_of_table[] = {
+ {
+ .compatible = "renesas,r9a07g044-pinctrl",
+ .data = &r9a07g044_data,
+ },
+ { /* sentinel */ }
+};
+
+static struct platform_driver rzg2l_pinctrl_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_match_ptr(rzg2l_pinctrl_of_table),
+ },
+ .probe = rzg2l_pinctrl_probe,
+};
+
+static int __init rzg2l_pinctrl_init(void)
+{
+ return platform_driver_register(&rzg2l_pinctrl_driver);
+}
+core_initcall(rzg2l_pinctrl_init);
+
+MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>");
+MODULE_DESCRIPTION("Pin and gpio controller driver for RZ/G2L family");
+MODULE_LICENSE("GPL v2");
projects / linux-2.6-microblaze.git / commitdiff