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Diffstat (limited to 'drivers/pinctrl/renesas/pinctrl-rzv2m.c')
-rw-r--r--drivers/pinctrl/renesas/pinctrl-rzv2m.c1119
1 files changed, 1119 insertions, 0 deletions
diff --git a/drivers/pinctrl/renesas/pinctrl-rzv2m.c b/drivers/pinctrl/renesas/pinctrl-rzv2m.c
new file mode 100644
index 0000000000..52aeafaba4
--- /dev/null
+++ b/drivers/pinctrl/renesas/pinctrl-rzv2m.c
@@ -0,0 +1,1119 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Renesas RZ/V2M Pin Control and GPIO driver core
+ *
+ * Based on:
+ * Renesas RZ/G2L Pin Control and GPIO driver core
+ *
+ * Copyright (C) 2022 Renesas Electronics Corporation.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/gpio/driver.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+
+#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+
+#include <dt-bindings/pinctrl/rzv2m-pinctrl.h>
+
+#include "../core.h"
+#include "../pinconf.h"
+#include "../pinmux.h"
+
+#define DRV_NAME "pinctrl-rzv2m"
+
+/*
+ * 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(pinconf) FIELD_GET(MUX_FUNC_MASK, (pinconf))
+
+/* PIN capabilities */
+#define PIN_CFG_GRP_1_8V_2 1
+#define PIN_CFG_GRP_1_8V_3 2
+#define PIN_CFG_GRP_SWIO_1 3
+#define PIN_CFG_GRP_SWIO_2 4
+#define PIN_CFG_GRP_3_3V 5
+#define PIN_CFG_GRP_MASK GENMASK(2, 0)
+#define PIN_CFG_BIAS BIT(3)
+#define PIN_CFG_DRV BIT(4)
+#define PIN_CFG_SLEW BIT(5)
+
+#define RZV2M_MPXED_PIN_FUNCS (PIN_CFG_BIAS | \
+ PIN_CFG_DRV | \
+ PIN_CFG_SLEW)
+
+/*
+ * n indicates number of pins in the port, a is the register index
+ * and f is pin configuration capabilities supported.
+ */
+#define RZV2M_GPIO_PORT_PACK(n, a, f) (((n) << 24) | ((a) << 16) | (f))
+#define RZV2M_GPIO_PORT_GET_PINCNT(x) FIELD_GET(GENMASK(31, 24), (x))
+#define RZV2M_GPIO_PORT_GET_INDEX(x) FIELD_GET(GENMASK(23, 16), (x))
+#define RZV2M_GPIO_PORT_GET_CFGS(x) FIELD_GET(GENMASK(15, 0), (x))
+
+#define RZV2M_DEDICATED_PORT_IDX 22
+
+/*
+ * BIT(31) indicates dedicated pin, b is the register bits (b * 16)
+ * and f is the pin configuration capabilities supported.
+ */
+#define RZV2M_SINGLE_PIN BIT(31)
+#define RZV2M_SINGLE_PIN_PACK(b, f) (RZV2M_SINGLE_PIN | \
+ ((RZV2M_DEDICATED_PORT_IDX) << 24) | \
+ ((b) << 16) | (f))
+#define RZV2M_SINGLE_PIN_GET_PORT(x) FIELD_GET(GENMASK(30, 24), (x))
+#define RZV2M_SINGLE_PIN_GET_BIT(x) FIELD_GET(GENMASK(23, 16), (x))
+#define RZV2M_SINGLE_PIN_GET_CFGS(x) FIELD_GET(GENMASK(15, 0), (x))
+
+#define RZV2M_PIN_ID_TO_PORT(id) ((id) / RZV2M_PINS_PER_PORT)
+#define RZV2M_PIN_ID_TO_PIN(id) ((id) % RZV2M_PINS_PER_PORT)
+
+#define DO(n) (0x00 + (n) * 0x40)
+#define OE(n) (0x04 + (n) * 0x40)
+#define IE(n) (0x08 + (n) * 0x40)
+#define PFSEL(n) (0x10 + (n) * 0x40)
+#define DI(n) (0x20 + (n) * 0x40)
+#define PUPD(n) (0x24 + (n) * 0x40)
+#define DRV(n) ((n) < RZV2M_DEDICATED_PORT_IDX ? (0x28 + (n) * 0x40) \
+ : 0x590)
+#define SR(n) ((n) < RZV2M_DEDICATED_PORT_IDX ? (0x2c + (n) * 0x40) \
+ : 0x594)
+#define DI_MSK(n) (0x30 + (n) * 0x40)
+#define EN_MSK(n) (0x34 + (n) * 0x40)
+
+#define PFC_MASK 0x07
+#define PUPD_MASK 0x03
+#define DRV_MASK 0x03
+
+struct rzv2m_dedicated_configs {
+ const char *name;
+ u32 config;
+};
+
+struct rzv2m_pinctrl_data {
+ const char * const *port_pins;
+ const u32 *port_pin_configs;
+ const struct rzv2m_dedicated_configs *dedicated_pins;
+ unsigned int n_port_pins;
+ unsigned int n_dedicated_pins;
+};
+
+struct rzv2m_pinctrl {
+ struct pinctrl_dev *pctl;
+ struct pinctrl_desc desc;
+ struct pinctrl_pin_desc *pins;
+
+ const struct rzv2m_pinctrl_data *data;
+ void __iomem *base;
+ struct device *dev;
+
+ struct gpio_chip gpio_chip;
+ struct pinctrl_gpio_range gpio_range;
+
+ spinlock_t lock; /* lock read/write registers */
+ struct mutex mutex; /* serialize adding groups and functions */
+};
+
+static const unsigned int drv_1_8V_group2_uA[] = { 1800, 3800, 7800, 11000 };
+static const unsigned int drv_1_8V_group3_uA[] = { 1600, 3200, 6400, 9600 };
+static const unsigned int drv_SWIO_group2_3_3V_uA[] = { 9000, 11000, 13000, 18000 };
+static const unsigned int drv_3_3V_group_uA[] = { 2000, 4000, 8000, 12000 };
+
+/* Helper for registers that have a write enable bit in the upper word */
+static void rzv2m_writel_we(void __iomem *addr, u8 shift, u8 value)
+{
+ writel((BIT(16) | value) << shift, addr);
+}
+
+static void rzv2m_pinctrl_set_pfc_mode(struct rzv2m_pinctrl *pctrl,
+ u8 port, u8 pin, u8 func)
+{
+ void __iomem *addr;
+
+ /* Mask input/output */
+ rzv2m_writel_we(pctrl->base + DI_MSK(port), pin, 1);
+ rzv2m_writel_we(pctrl->base + EN_MSK(port), pin, 1);
+
+ /* Select the function and set the write enable bits */
+ addr = pctrl->base + PFSEL(port) + (pin / 4) * 4;
+ writel(((PFC_MASK << 16) | func) << ((pin % 4) * 4), addr);
+
+ /* Unmask input/output */
+ rzv2m_writel_we(pctrl->base + EN_MSK(port), pin, 0);
+ rzv2m_writel_we(pctrl->base + DI_MSK(port), pin, 0);
+};
+
+static int rzv2m_pinctrl_set_mux(struct pinctrl_dev *pctldev,
+ unsigned int func_selector,
+ unsigned int group_selector)
+{
+ struct rzv2m_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",
+ RZV2M_PIN_ID_TO_PORT(pins[i]), RZV2M_PIN_ID_TO_PIN(pins[i]),
+ psel_val[i]);
+ rzv2m_pinctrl_set_pfc_mode(pctrl, RZV2M_PIN_ID_TO_PORT(pins[i]),
+ RZV2M_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
+ }
+
+ return 0;
+};
+
+static int rzv2m_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 rzv2m_dt_subnode_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct device_node *parent,
+ struct pinctrl_map **map,
+ unsigned int *num_maps,
+ unsigned int *index)
+{
+ struct rzv2m_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 *name;
+ 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 = rzv2m_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);
+ }
+
+ if (parent) {
+ name = devm_kasprintf(pctrl->dev, GFP_KERNEL, "%pOFn.%pOFn",
+ parent, np);
+ if (!name) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ } else {
+ name = np->name;
+ }
+
+ mutex_lock(&pctrl->mutex);
+
+ /* Register a single pin group listing all the pins we read from DT */
+ gsel = pinctrl_generic_add_group(pctldev, name, pins, num_pinmux, NULL);
+ if (gsel < 0) {
+ ret = gsel;
+ goto unlock;
+ }
+
+ /*
+ * Register a single group function where the 'data' is an array PSEL
+ * register values read from DT.
+ */
+ pin_fn[0] = name;
+ fsel = pinmux_generic_add_function(pctldev, name, pin_fn, 1, psel_val);
+ if (fsel < 0) {
+ ret = fsel;
+ goto remove_group;
+ }
+
+ mutex_unlock(&pctrl->mutex);
+
+ maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
+ maps[idx].data.mux.group = name;
+ maps[idx].data.mux.function = 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);
+unlock:
+ mutex_unlock(&pctrl->mutex);
+done:
+ *index = idx;
+ kfree(configs);
+ return ret;
+}
+
+static void rzv2m_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 rzv2m_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **map,
+ unsigned int *num_maps)
+{
+ struct rzv2m_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 = rzv2m_dt_subnode_to_map(pctldev, child, np, map,
+ num_maps, &index);
+ if (ret < 0) {
+ of_node_put(child);
+ goto done;
+ }
+ }
+
+ if (*num_maps == 0) {
+ ret = rzv2m_dt_subnode_to_map(pctldev, np, NULL, 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:
+ rzv2m_dt_free_map(pctldev, *map, *num_maps);
+
+ return ret;
+}
+
+static int rzv2m_validate_gpio_pin(struct rzv2m_pinctrl *pctrl,
+ u32 cfg, u32 port, u8 bit)
+{
+ u8 pincount = RZV2M_GPIO_PORT_GET_PINCNT(cfg);
+ u32 port_index = RZV2M_GPIO_PORT_GET_INDEX(cfg);
+ u32 data;
+
+ if (bit >= pincount || port >= pctrl->data->n_port_pins)
+ return -EINVAL;
+
+ data = pctrl->data->port_pin_configs[port];
+ if (port_index != RZV2M_GPIO_PORT_GET_INDEX(data))
+ return -EINVAL;
+
+ return 0;
+}
+
+static void rzv2m_rmw_pin_config(struct rzv2m_pinctrl *pctrl, u32 offset,
+ u8 shift, u32 mask, u32 val)
+{
+ void __iomem *addr = pctrl->base + offset;
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&pctrl->lock, flags);
+ reg = readl(addr) & ~(mask << shift);
+ writel(reg | (val << shift), addr);
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+}
+
+static int rzv2m_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
+ unsigned int _pin,
+ unsigned long *config)
+{
+ struct rzv2m_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;
+ u32 port;
+ u32 cfg;
+ u8 bit;
+ u32 val;
+
+ if (!pin_data)
+ return -EINVAL;
+
+ if (*pin_data & RZV2M_SINGLE_PIN) {
+ port = RZV2M_SINGLE_PIN_GET_PORT(*pin_data);
+ cfg = RZV2M_SINGLE_PIN_GET_CFGS(*pin_data);
+ bit = RZV2M_SINGLE_PIN_GET_BIT(*pin_data);
+ } else {
+ cfg = RZV2M_GPIO_PORT_GET_CFGS(*pin_data);
+ port = RZV2M_PIN_ID_TO_PORT(_pin);
+ bit = RZV2M_PIN_ID_TO_PIN(_pin);
+
+ if (rzv2m_validate_gpio_pin(pctrl, *pin_data, RZV2M_PIN_ID_TO_PORT(_pin), bit))
+ return -EINVAL;
+ }
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ case PIN_CONFIG_BIAS_PULL_UP:
+ case PIN_CONFIG_BIAS_PULL_DOWN: {
+ enum pin_config_param bias;
+
+ if (!(cfg & PIN_CFG_BIAS))
+ return -EINVAL;
+
+ /* PUPD uses 2-bits per pin */
+ bit *= 2;
+
+ switch ((readl(pctrl->base + PUPD(port)) >> bit) & PUPD_MASK) {
+ case 0:
+ bias = PIN_CONFIG_BIAS_PULL_DOWN;
+ break;
+ case 2:
+ bias = PIN_CONFIG_BIAS_PULL_UP;
+ break;
+ default:
+ bias = PIN_CONFIG_BIAS_DISABLE;
+ }
+
+ if (bias != param)
+ return -EINVAL;
+ break;
+ }
+
+ case PIN_CONFIG_DRIVE_STRENGTH_UA:
+ if (!(cfg & PIN_CFG_DRV))
+ return -EINVAL;
+
+ /* DRV uses 2-bits per pin */
+ bit *= 2;
+
+ val = (readl(pctrl->base + DRV(port)) >> bit) & DRV_MASK;
+
+ switch (cfg & PIN_CFG_GRP_MASK) {
+ case PIN_CFG_GRP_1_8V_2:
+ arg = drv_1_8V_group2_uA[val];
+ break;
+ case PIN_CFG_GRP_1_8V_3:
+ arg = drv_1_8V_group3_uA[val];
+ break;
+ case PIN_CFG_GRP_SWIO_2:
+ arg = drv_SWIO_group2_3_3V_uA[val];
+ break;
+ case PIN_CFG_GRP_SWIO_1:
+ case PIN_CFG_GRP_3_3V:
+ arg = drv_3_3V_group_uA[val];
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ break;
+
+ case PIN_CONFIG_SLEW_RATE:
+ if (!(cfg & PIN_CFG_SLEW))
+ return -EINVAL;
+
+ arg = readl(pctrl->base + SR(port)) & BIT(bit);
+ break;
+
+ default:
+ return -ENOTSUPP;
+ }
+
+ *config = pinconf_to_config_packed(param, arg);
+
+ return 0;
+};
+
+static int rzv2m_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned int _pin,
+ unsigned long *_configs,
+ unsigned int num_configs)
+{
+ struct rzv2m_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;
+ u32 port;
+ unsigned int i;
+ u32 cfg;
+ u8 bit;
+ u32 val;
+
+ if (!pin_data)
+ return -EINVAL;
+
+ if (*pin_data & RZV2M_SINGLE_PIN) {
+ port = RZV2M_SINGLE_PIN_GET_PORT(*pin_data);
+ cfg = RZV2M_SINGLE_PIN_GET_CFGS(*pin_data);
+ bit = RZV2M_SINGLE_PIN_GET_BIT(*pin_data);
+ } else {
+ cfg = RZV2M_GPIO_PORT_GET_CFGS(*pin_data);
+ port = RZV2M_PIN_ID_TO_PORT(_pin);
+ bit = RZV2M_PIN_ID_TO_PIN(_pin);
+
+ if (rzv2m_validate_gpio_pin(pctrl, *pin_data, RZV2M_PIN_ID_TO_PORT(_pin), bit))
+ return -EINVAL;
+ }
+
+ for (i = 0; i < num_configs; i++) {
+ param = pinconf_to_config_param(_configs[i]);
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ case PIN_CONFIG_BIAS_PULL_UP:
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ if (!(cfg & PIN_CFG_BIAS))
+ return -EINVAL;
+
+ /* PUPD uses 2-bits per pin */
+ bit *= 2;
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ val = 0;
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+ val = 2;
+ break;
+ default:
+ val = 1;
+ }
+
+ rzv2m_rmw_pin_config(pctrl, PUPD(port), bit, PUPD_MASK, val);
+ break;
+
+ case PIN_CONFIG_DRIVE_STRENGTH_UA: {
+ unsigned int arg = pinconf_to_config_argument(_configs[i]);
+ const unsigned int *drv_strengths;
+ unsigned int index;
+
+ if (!(cfg & PIN_CFG_DRV))
+ return -EINVAL;
+
+ switch (cfg & PIN_CFG_GRP_MASK) {
+ case PIN_CFG_GRP_1_8V_2:
+ drv_strengths = drv_1_8V_group2_uA;
+ break;
+ case PIN_CFG_GRP_1_8V_3:
+ drv_strengths = drv_1_8V_group3_uA;
+ break;
+ case PIN_CFG_GRP_SWIO_2:
+ drv_strengths = drv_SWIO_group2_3_3V_uA;
+ break;
+ case PIN_CFG_GRP_SWIO_1:
+ case PIN_CFG_GRP_3_3V:
+ drv_strengths = drv_3_3V_group_uA;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (index = 0; index < 4; index++) {
+ if (arg == drv_strengths[index])
+ break;
+ }
+ if (index >= 4)
+ return -EINVAL;
+
+ /* DRV uses 2-bits per pin */
+ bit *= 2;
+
+ rzv2m_rmw_pin_config(pctrl, DRV(port), bit, DRV_MASK, index);
+ break;
+ }
+
+ case PIN_CONFIG_SLEW_RATE: {
+ unsigned int arg = pinconf_to_config_argument(_configs[i]);
+
+ if (!(cfg & PIN_CFG_SLEW))
+ return -EINVAL;
+
+ rzv2m_writel_we(pctrl->base + SR(port), bit, !arg);
+ break;
+ }
+
+ default:
+ return -EOPNOTSUPP;
+ }
+ }
+
+ return 0;
+}
+
+static int rzv2m_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 = rzv2m_pinctrl_pinconf_set(pctldev, pins[i], configs,
+ num_configs);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+};
+
+static int rzv2m_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 = rzv2m_pinctrl_pinconf_get(pctldev, pins[i], config);
+ if (ret)
+ return ret;
+
+ /* Check config matches previous pins */
+ if (i && prev_config != *config)
+ return -EOPNOTSUPP;
+
+ prev_config = *config;
+ }
+
+ return 0;
+};
+
+static const struct pinctrl_ops rzv2m_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 = rzv2m_dt_node_to_map,
+ .dt_free_map = rzv2m_dt_free_map,
+};
+
+static const struct pinmux_ops rzv2m_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 = rzv2m_pinctrl_set_mux,
+ .strict = true,
+};
+
+static const struct pinconf_ops rzv2m_pinctrl_confops = {
+ .is_generic = true,
+ .pin_config_get = rzv2m_pinctrl_pinconf_get,
+ .pin_config_set = rzv2m_pinctrl_pinconf_set,
+ .pin_config_group_set = rzv2m_pinctrl_pinconf_group_set,
+ .pin_config_group_get = rzv2m_pinctrl_pinconf_group_get,
+ .pin_config_config_dbg_show = pinconf_generic_dump_config,
+};
+
+static int rzv2m_gpio_request(struct gpio_chip *chip, unsigned int offset)
+{
+ struct rzv2m_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZV2M_PIN_ID_TO_PORT(offset);
+ u8 bit = RZV2M_PIN_ID_TO_PIN(offset);
+ int ret;
+
+ ret = pinctrl_gpio_request(chip->base + offset);
+ if (ret)
+ return ret;
+
+ rzv2m_pinctrl_set_pfc_mode(pctrl, port, bit, 0);
+
+ return 0;
+}
+
+static void rzv2m_gpio_set_direction(struct rzv2m_pinctrl *pctrl, u32 port,
+ u8 bit, bool output)
+{
+ rzv2m_writel_we(pctrl->base + OE(port), bit, output);
+ rzv2m_writel_we(pctrl->base + IE(port), bit, !output);
+}
+
+static int rzv2m_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+ struct rzv2m_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZV2M_PIN_ID_TO_PORT(offset);
+ u8 bit = RZV2M_PIN_ID_TO_PIN(offset);
+
+ if (!(readl(pctrl->base + IE(port)) & BIT(bit)))
+ return GPIO_LINE_DIRECTION_OUT;
+
+ return GPIO_LINE_DIRECTION_IN;
+}
+
+static int rzv2m_gpio_direction_input(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ struct rzv2m_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZV2M_PIN_ID_TO_PORT(offset);
+ u8 bit = RZV2M_PIN_ID_TO_PIN(offset);
+
+ rzv2m_gpio_set_direction(pctrl, port, bit, false);
+
+ return 0;
+}
+
+static void rzv2m_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ struct rzv2m_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZV2M_PIN_ID_TO_PORT(offset);
+ u8 bit = RZV2M_PIN_ID_TO_PIN(offset);
+
+ rzv2m_writel_we(pctrl->base + DO(port), bit, !!value);
+}
+
+static int rzv2m_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ struct rzv2m_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZV2M_PIN_ID_TO_PORT(offset);
+ u8 bit = RZV2M_PIN_ID_TO_PIN(offset);
+
+ rzv2m_gpio_set(chip, offset, value);
+ rzv2m_gpio_set_direction(pctrl, port, bit, true);
+
+ return 0;
+}
+
+static int rzv2m_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ struct rzv2m_pinctrl *pctrl = gpiochip_get_data(chip);
+ u32 port = RZV2M_PIN_ID_TO_PORT(offset);
+ u8 bit = RZV2M_PIN_ID_TO_PIN(offset);
+ int direction = rzv2m_gpio_get_direction(chip, offset);
+
+ if (direction == GPIO_LINE_DIRECTION_IN)
+ return !!(readl(pctrl->base + DI(port)) & BIT(bit));
+ else
+ return !!(readl(pctrl->base + DO(port)) & BIT(bit));
+}
+
+static void rzv2m_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.
+ */
+ rzv2m_gpio_direction_input(chip, offset);
+}
+
+static const char * const rzv2m_gpio_names[] = {
+ "P0_0", "P0_1", "P0_2", "P0_3", "P0_4", "P0_5", "P0_6", "P0_7",
+ "P0_8", "P0_9", "P0_10", "P0_11", "P0_12", "P0_13", "P0_14", "P0_15",
+ "P1_0", "P1_1", "P1_2", "P1_3", "P1_4", "P1_5", "P1_6", "P1_7",
+ "P1_8", "P1_9", "P1_10", "P1_11", "P1_12", "P1_13", "P1_14", "P1_15",
+ "P2_0", "P2_1", "P2_2", "P2_3", "P2_4", "P2_5", "P2_6", "P2_7",
+ "P2_8", "P2_9", "P2_10", "P2_11", "P2_12", "P2_13", "P2_14", "P2_15",
+ "P3_0", "P3_1", "P3_2", "P3_3", "P3_4", "P3_5", "P3_6", "P3_7",
+ "P3_8", "P3_9", "P3_10", "P3_11", "P3_12", "P3_13", "P3_14", "P3_15",
+ "P4_0", "P4_1", "P4_2", "P4_3", "P4_4", "P4_5", "P4_6", "P4_7",
+ "P4_8", "P4_9", "P4_10", "P4_11", "P4_12", "P4_13", "P4_14", "P4_15",
+ "P5_0", "P5_1", "P5_2", "P5_3", "P5_4", "P5_5", "P5_6", "P5_7",
+ "P5_8", "P5_9", "P5_10", "P5_11", "P5_12", "P5_13", "P5_14", "P5_15",
+ "P6_0", "P6_1", "P6_2", "P6_3", "P6_4", "P6_5", "P6_6", "P6_7",
+ "P6_8", "P6_9", "P6_10", "P6_11", "P6_12", "P6_13", "P6_14", "P6_15",
+ "P7_0", "P7_1", "P7_2", "P7_3", "P7_4", "P7_5", "P7_6", "P7_7",
+ "P7_8", "P7_9", "P7_10", "P7_11", "P7_12", "P7_13", "P7_14", "P7_15",
+ "P8_0", "P8_1", "P8_2", "P8_3", "P8_4", "P8_5", "P8_6", "P8_7",
+ "P8_8", "P8_9", "P8_10", "P8_11", "P8_12", "P8_13", "P8_14", "P8_15",
+ "P9_0", "P9_1", "P9_2", "P9_3", "P9_4", "P9_5", "P9_6", "P9_7",
+ "P9_8", "P9_9", "P9_10", "P9_11", "P9_12", "P9_13", "P9_14", "P9_15",
+ "P10_0", "P10_1", "P10_2", "P10_3", "P10_4", "P10_5", "P10_6", "P10_7",
+ "P10_8", "P10_9", "P10_10", "P10_11", "P10_12", "P10_13", "P10_14", "P10_15",
+ "P11_0", "P11_1", "P11_2", "P11_3", "P11_4", "P11_5", "P11_6", "P11_7",
+ "P11_8", "P11_9", "P11_10", "P11_11", "P11_12", "P11_13", "P11_14", "P11_15",
+ "P12_0", "P12_1", "P12_2", "P12_3", "P12_4", "P12_5", "P12_6", "P12_7",
+ "P12_8", "P12_9", "P12_10", "P12_11", "P12_12", "P12_13", "P12_14", "P12_15",
+ "P13_0", "P13_1", "P13_2", "P13_3", "P13_4", "P13_5", "P13_6", "P13_7",
+ "P13_8", "P13_9", "P13_10", "P13_11", "P13_12", "P13_13", "P13_14", "P13_15",
+ "P14_0", "P14_1", "P14_2", "P14_3", "P14_4", "P14_5", "P14_6", "P14_7",
+ "P14_8", "P14_9", "P14_10", "P14_11", "P14_12", "P14_13", "P14_14", "P14_15",
+ "P15_0", "P15_1", "P15_2", "P15_3", "P15_4", "P15_5", "P15_6", "P15_7",
+ "P15_8", "P15_9", "P15_10", "P15_11", "P15_12", "P15_13", "P15_14", "P15_15",
+ "P16_0", "P16_1", "P16_2", "P16_3", "P16_4", "P16_5", "P16_6", "P16_7",
+ "P16_8", "P16_9", "P16_10", "P16_11", "P16_12", "P16_13", "P16_14", "P16_15",
+ "P17_0", "P17_1", "P17_2", "P17_3", "P17_4", "P17_5", "P17_6", "P17_7",
+ "P17_8", "P17_9", "P17_10", "P17_11", "P17_12", "P17_13", "P17_14", "P17_15",
+ "P18_0", "P18_1", "P18_2", "P18_3", "P18_4", "P18_5", "P18_6", "P18_7",
+ "P18_8", "P18_9", "P18_10", "P18_11", "P18_12", "P18_13", "P18_14", "P18_15",
+ "P19_0", "P19_1", "P19_2", "P19_3", "P19_4", "P19_5", "P19_6", "P19_7",
+ "P19_8", "P19_9", "P19_10", "P19_11", "P19_12", "P19_13", "P19_14", "P19_15",
+ "P20_0", "P20_1", "P20_2", "P20_3", "P20_4", "P20_5", "P20_6", "P20_7",
+ "P20_8", "P20_9", "P20_10", "P20_11", "P20_12", "P20_13", "P20_14", "P20_15",
+ "P21_0", "P21_1", "P21_2", "P21_3", "P21_4", "P21_5", "P21_6", "P21_7",
+ "P21_8", "P21_9", "P21_10", "P21_11", "P21_12", "P21_13", "P21_14", "P21_15",
+};
+
+static const u32 rzv2m_gpio_configs[] = {
+ RZV2M_GPIO_PORT_PACK(14, 0, PIN_CFG_GRP_SWIO_2 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(16, 1, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(8, 2, PIN_CFG_GRP_1_8V_3 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(16, 3, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(8, 4, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(4, 5, PIN_CFG_GRP_1_8V_3 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(12, 6, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(6, 7, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(8, 8, PIN_CFG_GRP_SWIO_2 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(8, 9, PIN_CFG_GRP_SWIO_2 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(9, 10, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(9, 11, PIN_CFG_GRP_SWIO_1 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(4, 12, PIN_CFG_GRP_3_3V | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(12, 13, PIN_CFG_GRP_3_3V | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(8, 14, PIN_CFG_GRP_3_3V | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(16, 15, PIN_CFG_GRP_SWIO_2 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(14, 16, PIN_CFG_GRP_SWIO_2 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(1, 17, PIN_CFG_GRP_SWIO_2 | RZV2M_MPXED_PIN_FUNCS),
+ RZV2M_GPIO_PORT_PACK(0, 18, 0),
+ RZV2M_GPIO_PORT_PACK(0, 19, 0),
+ RZV2M_GPIO_PORT_PACK(3, 20, PIN_CFG_GRP_1_8V_2 | PIN_CFG_DRV),
+ RZV2M_GPIO_PORT_PACK(1, 21, PIN_CFG_GRP_SWIO_1 | PIN_CFG_DRV | PIN_CFG_SLEW),
+};
+
+static const struct rzv2m_dedicated_configs rzv2m_dedicated_pins[] = {
+ { "NAWPN", RZV2M_SINGLE_PIN_PACK(0,
+ (PIN_CFG_GRP_SWIO_2 | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+ { "IM0CLK", RZV2M_SINGLE_PIN_PACK(1,
+ (PIN_CFG_GRP_SWIO_1 | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+ { "IM1CLK", RZV2M_SINGLE_PIN_PACK(2,
+ (PIN_CFG_GRP_SWIO_1 | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+ { "DETDO", RZV2M_SINGLE_PIN_PACK(5,
+ (PIN_CFG_GRP_1_8V_3 | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+ { "DETMS", RZV2M_SINGLE_PIN_PACK(6,
+ (PIN_CFG_GRP_1_8V_3 | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+ { "PCRSTOUTB", RZV2M_SINGLE_PIN_PACK(12,
+ (PIN_CFG_GRP_3_3V | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+ { "USPWEN", RZV2M_SINGLE_PIN_PACK(14,
+ (PIN_CFG_GRP_3_3V | PIN_CFG_DRV | PIN_CFG_SLEW)) },
+};
+
+static int rzv2m_gpio_register(struct rzv2m_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] != pctrl->data->n_port_pins) {
+ dev_err(pctrl->dev, "gpio-ranges does not match selected SOC\n");
+ return -EINVAL;
+ }
+
+ chip->names = pctrl->data->port_pins;
+ chip->request = rzv2m_gpio_request;
+ chip->free = rzv2m_gpio_free;
+ chip->get_direction = rzv2m_gpio_get_direction;
+ chip->direction_input = rzv2m_gpio_direction_input;
+ chip->direction_output = rzv2m_gpio_direction_output;
+ chip->get = rzv2m_gpio_get;
+ chip->set = rzv2m_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 rzv2m_pinctrl_register(struct rzv2m_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 = &rzv2m_pinctrl_pctlops;
+ pctrl->desc.pmxops = &rzv2m_pinctrl_pmxops;
+ pctrl->desc.confops = &rzv2m_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 % RZV2M_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 = rzv2m_gpio_register(pctrl);
+ if (ret) {
+ dev_err(pctrl->dev, "failed to add GPIO chip: %i\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rzv2m_pinctrl_probe(struct platform_device *pdev)
+{
+ struct rzv2m_pinctrl *pctrl;
+ struct clk *clk;
+ 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);
+
+ clk = devm_clk_get_enabled(pctrl->dev, NULL);
+ if (IS_ERR(clk))
+ return dev_err_probe(pctrl->dev, PTR_ERR(clk),
+ "failed to enable GPIO clk\n");
+
+ spin_lock_init(&pctrl->lock);
+ mutex_init(&pctrl->mutex);
+
+ platform_set_drvdata(pdev, pctrl);
+
+ ret = rzv2m_pinctrl_register(pctrl);
+ if (ret)
+ return ret;
+
+ dev_info(pctrl->dev, "%s support registered\n", DRV_NAME);
+ return 0;
+}
+
+static struct rzv2m_pinctrl_data r9a09g011_data = {
+ .port_pins = rzv2m_gpio_names,
+ .port_pin_configs = rzv2m_gpio_configs,
+ .dedicated_pins = rzv2m_dedicated_pins,
+ .n_port_pins = ARRAY_SIZE(rzv2m_gpio_configs) * RZV2M_PINS_PER_PORT,
+ .n_dedicated_pins = ARRAY_SIZE(rzv2m_dedicated_pins),
+};
+
+static const struct of_device_id rzv2m_pinctrl_of_table[] = {
+ {
+ .compatible = "renesas,r9a09g011-pinctrl",
+ .data = &r9a09g011_data,
+ },
+ { /* sentinel */ }
+};
+
+static struct platform_driver rzv2m_pinctrl_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_match_ptr(rzv2m_pinctrl_of_table),
+ },
+ .probe = rzv2m_pinctrl_probe,
+};
+
+static int __init rzv2m_pinctrl_init(void)
+{
+ return platform_driver_register(&rzv2m_pinctrl_driver);
+}
+core_initcall(rzv2m_pinctrl_init);
+
+MODULE_AUTHOR("Phil Edworthy <phil.edworthy@renesas.com>");
+MODULE_DESCRIPTION("Pin and gpio controller driver for RZ/V2M");