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linux-zen-desktop/drivers/pinctrl/renesas/pinctrl-rzg2l.c

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47 KiB
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Initial commit
2023-08-30 17:31:07 +02:00
// 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/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/seq_file.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/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_A BIT(0)
#define PIN_CFG_IOLH_B BIT(1)
#define PIN_CFG_SR BIT(2)
#define PIN_CFG_IEN BIT(3)
#define PIN_CFG_PUPD BIT(4)
#define PIN_CFG_IO_VMC_SD0 BIT(5)
#define PIN_CFG_IO_VMC_SD1 BIT(6)
#define PIN_CFG_IO_VMC_QSPI BIT(7)
#define PIN_CFG_IO_VMC_ETH0 BIT(8)
#define PIN_CFG_IO_VMC_ETH1 BIT(9)
#define PIN_CFG_FILONOFF BIT(10)
#define PIN_CFG_FILNUM BIT(11)
#define PIN_CFG_FILCLKSEL BIT(12)
#define RZG2L_MPXED_PIN_FUNCS (PIN_CFG_IOLH_A | \
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_OFFSET(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 IOLH(n) (0x1000 + (n) * 8)
#define IEN(n) (0x1800 + (n) * 8)
#define ISEL(n) (0x2c80 + (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 IOLH_MASK 0x03
#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_PORT_OFFSET(id) (RZG2L_PIN_ID_TO_PORT(id) + 0x10)
#define RZG2L_PIN_ID_TO_PIN(id) ((id) % RZG2L_PINS_PER_PORT)
#define RZG2L_TINT_MAX_INTERRUPT 32
#define RZG2L_TINT_IRQ_START_INDEX 9
#define RZG2L_PACK_HWIRQ(t, i) (((t) << 16) | (i))
struct rzg2l_dedicated_configs {
const char *name;
u32 config;
};
struct rzg2l_pinctrl_data {
const char * const *port_pins;
const u32 *port_pin_configs;
unsigned int n_ports;
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;
DECLARE_BITMAP(tint_slot, RZG2L_TINT_MAX_INTERRUPT);
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spinlock_t bitmap_lock; /* protect tint_slot bitmap */
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unsigned int hwirq[RZG2L_TINT_MAX_INTERRUPT];
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spinlock_t lock; /* lock read/write registers */
struct mutex mutex; /* serialize adding groups and functions */
Initial commit
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};
static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
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,
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struct device_node *parent,
Initial commit
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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;
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const char *name;
Initial commit
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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);
}
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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);
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/* Register a single pin group listing all the pins we read from DT */
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gsel = pinctrl_generic_add_group(pctldev, name, pins, num_pinmux, NULL);
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if (gsel < 0) {
ret = gsel;
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goto unlock;
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}
/*
* Register a single group function where the 'data' is an array PSEL
* register values read from DT.
*/
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pin_fn[0] = name;
fsel = pinmux_generic_add_function(pctldev, name, pin_fn, 1, psel_val);
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if (fsel < 0) {
ret = fsel;
goto remove_group;
}
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mutex_unlock(&pctrl->mutex);
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maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
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maps[idx].data.mux.group = name;
maps[idx].data.mux.function = name;
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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);
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unlock:
mutex_unlock(&pctrl->mutex);
Initial commit
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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) {
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ret = rzg2l_dt_subnode_to_map(pctldev, child, np, map,
Initial commit
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num_maps, &index);
if (ret < 0) {
of_node_put(child);
goto done;
}
}
if (*num_maps == 0) {
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ret = rzg2l_dt_subnode_to_map(pctldev, np, NULL, map,
Initial commit
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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:
rzg2l_dt_free_map(pctldev, *map, *num_maps);
return ret;
}
static int rzg2l_validate_gpio_pin(struct rzg2l_pinctrl *pctrl,
u32 cfg, u32 port, u8 bit)
{
u8 pincount = RZG2L_GPIO_PORT_GET_PINCNT(cfg);
u32 port_index = RZG2L_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 != RZG2L_GPIO_PORT_GET_INDEX(data))
return -EINVAL;
return 0;
}
static u32 rzg2l_read_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset,
u8 bit, u32 mask)
{
void __iomem *addr = pctrl->base + offset;
/* handle _L/_H for 32-bit register read/write */
if (bit >= 4) {
bit -= 4;
addr += 4;
}
return (readl(addr) >> (bit * 8)) & mask;
}
static void rzg2l_rmw_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset,
u8 bit, u32 mask, u32 val)
{
void __iomem *addr = pctrl->base + offset;
unsigned long flags;
u32 reg;
/* handle _L/_H for 32-bit register read/write */
if (bit >= 4) {
bit -= 4;
addr += 4;
}
spin_lock_irqsave(&pctrl->lock, flags);
reg = readl(addr) & ~(mask << (bit * 8));
writel(reg | (val << (bit * 8)), addr);
spin_unlock_irqrestore(&pctrl->lock, flags);
}
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_offset;
u32 cfg = 0;
u8 bit = 0;
if (!pin_data)
return -EINVAL;
if (*pin_data & RZG2L_SINGLE_PIN) {
port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data);
cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
} else {
cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data);
port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin);
bit = RZG2L_PIN_ID_TO_PIN(_pin);
if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
return -EINVAL;
}
switch (param) {
case PIN_CONFIG_INPUT_ENABLE:
if (!(cfg & PIN_CFG_IEN))
return -EINVAL;
arg = rzg2l_read_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK);
if (!arg)
return -EINVAL;
break;
case PIN_CONFIG_POWER_SOURCE: {
u32 pwr_reg = 0x0;
if (cfg & PIN_CFG_IO_VMC_SD0)
pwr_reg = SD_CH(0);
else if (cfg & PIN_CFG_IO_VMC_SD1)
pwr_reg = SD_CH(1);
else if (cfg & PIN_CFG_IO_VMC_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;
}
case PIN_CONFIG_DRIVE_STRENGTH: {
unsigned int index;
if (!(cfg & PIN_CFG_IOLH_A))
return -EINVAL;
index = rzg2l_read_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK);
arg = iolh_groupa_mA[index];
break;
}
case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
unsigned int index;
if (!(cfg & PIN_CFG_IOLH_B))
return -EINVAL;
index = rzg2l_read_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK);
arg = iolh_groupb_oi[index];
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_offset;
unsigned int i;
u32 cfg = 0;
u8 bit = 0;
if (!pin_data)
return -EINVAL;
if (*pin_data & RZG2L_SINGLE_PIN) {
port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data);
cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
} else {
cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data);
port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin);
bit = RZG2L_PIN_ID_TO_PIN(_pin);
if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_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_INPUT_ENABLE: {
unsigned int arg =
pinconf_to_config_argument(_configs[i]);
if (!(cfg & PIN_CFG_IEN))
return -EINVAL;
rzg2l_rmw_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK, !!arg);
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_IO_VMC_SD0)
pwr_reg = SD_CH(0);
else if (cfg & PIN_CFG_IO_VMC_SD1)
pwr_reg = SD_CH(1);
else if (cfg & PIN_CFG_IO_VMC_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;
}
case PIN_CONFIG_DRIVE_STRENGTH: {
unsigned int arg = pinconf_to_config_argument(_configs[i]);
unsigned int index;
if (!(cfg & PIN_CFG_IOLH_A))
return -EINVAL;
for (index = 0; index < ARRAY_SIZE(iolh_groupa_mA); index++) {
if (arg == iolh_groupa_mA[index])
break;
}
if (index >= ARRAY_SIZE(iolh_groupa_mA))
return -EINVAL;
rzg2l_rmw_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK, index);
break;
}
case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
unsigned int arg = pinconf_to_config_argument(_configs[i]);
unsigned int index;
if (!(cfg & PIN_CFG_IOLH_B))
return -EINVAL;
for (index = 0; index < ARRAY_SIZE(iolh_groupb_oi); index++) {
if (arg == iolh_groupb_oi[index])
break;
}
if (index >= ARRAY_SIZE(iolh_groupb_oi))
return -EINVAL;
rzg2l_rmw_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK, index);
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)
{
unsigned int virq;
pinctrl_gpio_free(chip->base + offset);
virq = irq_find_mapping(chip->irq.domain, offset);
if (virq)
irq_dispose_mapping(virq);
/*
* 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, 0x21, 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_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x25, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x26, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x27, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x28, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x29, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2a, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2b, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2c, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2d, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x2e, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x2f, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(3, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_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 const u32 r9a07g043_gpio_configs[] = {
RZG2L_GPIO_PORT_PACK(4, 0x10, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(5, 0x11, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(4, 0x12, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(4, 0x13, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(6, 0x14, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(5, 0x15, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(5, 0x16, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(5, 0x17, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(5, 0x18, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(4, 0x19, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(5, 0x1a, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(4, 0x1b, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x1c, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(5, 0x1d, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x1e, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x1f, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x20, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x21, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(6, 0x22, RZG2L_MPXED_PIN_FUNCS),
};
static struct {
struct rzg2l_dedicated_configs common[35];
struct rzg2l_dedicated_configs rzg2l_pins[7];
} rzg2l_dedicated_pins = {
.common = {
{ "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_IOLH_A | PIN_CFG_SR | PIN_CFG_IEN)) },
{ "TDO", RZG2L_SINGLE_PIN_PACK(0x3, 0,
(PIN_CFG_IOLH_A | 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_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x6, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x6, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x7, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x7, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x7, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x7, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x7, 4,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x7, 5,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x7, 6,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x7, 7,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x8, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x8, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x9, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x9, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x9, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x9, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "QSPI0_SPCLK", RZG2L_SINGLE_PIN_PACK(0xa, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO0", RZG2L_SINGLE_PIN_PACK(0xa, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO1", RZG2L_SINGLE_PIN_PACK(0xa, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO2", RZG2L_SINGLE_PIN_PACK(0xa, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO3", RZG2L_SINGLE_PIN_PACK(0xa, 4,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_SSL", RZG2L_SINGLE_PIN_PACK(0xa, 5,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI_RESET#", RZG2L_SINGLE_PIN_PACK(0xc, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI_WP#", RZG2L_SINGLE_PIN_PACK(0xc, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0xd, 0, (PIN_CFG_IOLH_A | 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) },
},
.rzg2l_pins = {
{ "QSPI_INT#", RZG2L_SINGLE_PIN_PACK(0xc, 2, (PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_SPCLK", RZG2L_SINGLE_PIN_PACK(0xb, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO0", RZG2L_SINGLE_PIN_PACK(0xb, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO1", RZG2L_SINGLE_PIN_PACK(0xb, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO2", RZG2L_SINGLE_PIN_PACK(0xb, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO3", RZG2L_SINGLE_PIN_PACK(0xb, 4,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_SSL", RZG2L_SINGLE_PIN_PACK(0xb, 5,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
}
};
static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_data *data)
{
unsigned int gpioint;
unsigned int i;
u32 port, bit;
port = virq / 8;
bit = virq % 8;
if (port >= data->n_ports ||
bit >= RZG2L_GPIO_PORT_GET_PINCNT(data->port_pin_configs[port]))
return -EINVAL;
gpioint = bit;
for (i = 0; i < port; i++)
gpioint += RZG2L_GPIO_PORT_GET_PINCNT(data->port_pin_configs[i]);
return gpioint;
}
static void rzg2l_gpio_irq_disable(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
unsigned int hwirq = irqd_to_hwirq(d);
unsigned long flags;
void __iomem *addr;
u32 port;
u8 bit;
port = RZG2L_PIN_ID_TO_PORT(hwirq);
bit = RZG2L_PIN_ID_TO_PIN(hwirq);
addr = pctrl->base + ISEL(port);
if (bit >= 4) {
bit -= 4;
addr += 4;
}
spin_lock_irqsave(&pctrl->lock, flags);
writel(readl(addr) & ~BIT(bit * 8), addr);
spin_unlock_irqrestore(&pctrl->lock, flags);
gpiochip_disable_irq(gc, hwirq);
irq_chip_disable_parent(d);
}
static void rzg2l_gpio_irq_enable(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
unsigned int hwirq = irqd_to_hwirq(d);
unsigned long flags;
void __iomem *addr;
u32 port;
u8 bit;
gpiochip_enable_irq(gc, hwirq);
port = RZG2L_PIN_ID_TO_PORT(hwirq);
bit = RZG2L_PIN_ID_TO_PIN(hwirq);
addr = pctrl->base + ISEL(port);
if (bit >= 4) {
bit -= 4;
addr += 4;
}
spin_lock_irqsave(&pctrl->lock, flags);
writel(readl(addr) | BIT(bit * 8), addr);
spin_unlock_irqrestore(&pctrl->lock, flags);
irq_chip_enable_parent(d);
}
static int rzg2l_gpio_irq_set_type(struct irq_data *d, unsigned int type)
{
return irq_chip_set_type_parent(d, type);
}
static void rzg2l_gpio_irqc_eoi(struct irq_data *d)
{
irq_chip_eoi_parent(d);
}
static void rzg2l_gpio_irq_print_chip(struct irq_data *data, struct seq_file *p)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
seq_printf(p, dev_name(gc->parent));
}
static const struct irq_chip rzg2l_gpio_irqchip = {
.name = "rzg2l-gpio",
.irq_disable = rzg2l_gpio_irq_disable,
.irq_enable = rzg2l_gpio_irq_enable,
.irq_mask = irq_chip_mask_parent,
.irq_unmask = irq_chip_unmask_parent,
.irq_set_type = rzg2l_gpio_irq_set_type,
.irq_eoi = rzg2l_gpio_irqc_eoi,
.irq_print_chip = rzg2l_gpio_irq_print_chip,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static int rzg2l_gpio_child_to_parent_hwirq(struct gpio_chip *gc,
unsigned int child,
unsigned int child_type,
unsigned int *parent,
unsigned int *parent_type)
{
struct rzg2l_pinctrl *pctrl = gpiochip_get_data(gc);
unsigned long flags;
int gpioint, irq;
gpioint = rzg2l_gpio_get_gpioint(child, pctrl->data);
if (gpioint < 0)
return gpioint;
spin_lock_irqsave(&pctrl->bitmap_lock, flags);
irq = bitmap_find_free_region(pctrl->tint_slot, RZG2L_TINT_MAX_INTERRUPT, get_order(1));
spin_unlock_irqrestore(&pctrl->bitmap_lock, flags);
if (irq < 0)
return -ENOSPC;
pctrl->hwirq[irq] = child;
irq += RZG2L_TINT_IRQ_START_INDEX;
/* All these interrupts are level high in the CPU */
*parent_type = IRQ_TYPE_LEVEL_HIGH;
*parent = RZG2L_PACK_HWIRQ(gpioint, irq);
return 0;
}
static int rzg2l_gpio_populate_parent_fwspec(struct gpio_chip *chip,
union gpio_irq_fwspec *gfwspec,
unsigned int parent_hwirq,
unsigned int parent_type)
{
struct irq_fwspec *fwspec = &gfwspec->fwspec;
fwspec->fwnode = chip->irq.parent_domain->fwnode;
fwspec->param_count = 2;
fwspec->param[0] = parent_hwirq;
fwspec->param[1] = parent_type;
return 0;
}
static void rzg2l_gpio_irq_domain_free(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs)
{
struct irq_data *d;
d = irq_domain_get_irq_data(domain, virq);
if (d) {
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
unsigned long flags;
unsigned int i;
for (i = 0; i < RZG2L_TINT_MAX_INTERRUPT; i++) {
if (pctrl->hwirq[i] == hwirq) {
spin_lock_irqsave(&pctrl->bitmap_lock, flags);
bitmap_release_region(pctrl->tint_slot, i, get_order(1));
spin_unlock_irqrestore(&pctrl->bitmap_lock, flags);
pctrl->hwirq[i] = 0;
break;
}
}
}
irq_domain_free_irqs_common(domain, virq, nr_irqs);
}
static void rzg2l_init_irq_valid_mask(struct gpio_chip *gc,
unsigned long *valid_mask,
unsigned int ngpios)
{
struct rzg2l_pinctrl *pctrl = gpiochip_get_data(gc);
struct gpio_chip *chip = &pctrl->gpio_chip;
unsigned int offset;
/* Forbid unused lines to be mapped as IRQs */
for (offset = 0; offset < chip->ngpio; offset++) {
u32 port, bit;
port = offset / 8;
bit = offset % 8;
if (port >= pctrl->data->n_ports ||
bit >= RZG2L_GPIO_PORT_GET_PINCNT(pctrl->data->port_pin_configs[port]))
clear_bit(offset, valid_mask);
}
}
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 irq_domain *parent_domain;
struct of_phandle_args of_args;
struct device_node *parent_np;
struct gpio_irq_chip *girq;
int ret;
parent_np = of_irq_find_parent(np);
if (!parent_np)
return -ENXIO;
parent_domain = irq_find_host(parent_np);
of_node_put(parent_np);
if (!parent_domain)
return -EPROBE_DEFER;
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 = 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];
girq = &chip->irq;
gpio_irq_chip_set_chip(girq, &rzg2l_gpio_irqchip);
girq->fwnode = of_node_to_fwnode(np);
girq->parent_domain = parent_domain;
girq->child_to_parent_hwirq = rzg2l_gpio_child_to_parent_hwirq;
girq->populate_parent_alloc_arg = rzg2l_gpio_populate_parent_fwspec;
girq->child_irq_domain_ops.free = rzg2l_gpio_irq_domain_free;
girq->init_valid_mask = rzg2l_init_irq_valid_mask;
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;
BUILD_BUG_ON(ARRAY_SIZE(rzg2l_gpio_configs) * RZG2L_PINS_PER_PORT >
ARRAY_SIZE(rzg2l_gpio_names));
BUILD_BUG_ON(ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT >
ARRAY_SIZE(rzg2l_gpio_names));
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);
spin_lock_init(&pctrl->bitmap_lock);
6.5.5
2023-10-24 12:59:35 +02:00
mutex_init(&pctrl->mutex);
Initial commit
2023-08-30 17:31:07 +02:00
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 r9a07g043_data = {
.port_pins = rzg2l_gpio_names,
.port_pin_configs = r9a07g043_gpio_configs,
.n_ports = ARRAY_SIZE(r9a07g043_gpio_configs),
.dedicated_pins = rzg2l_dedicated_pins.common,
.n_port_pins = ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT,
.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common),
};
static struct rzg2l_pinctrl_data r9a07g044_data = {
.port_pins = rzg2l_gpio_names,
.port_pin_configs = rzg2l_gpio_configs,
.n_ports = ARRAY_SIZE(rzg2l_gpio_configs),
.dedicated_pins = rzg2l_dedicated_pins.common,
.n_port_pins = ARRAY_SIZE(rzg2l_gpio_configs) * RZG2L_PINS_PER_PORT,
.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common) +
ARRAY_SIZE(rzg2l_dedicated_pins.rzg2l_pins),
};
static const struct of_device_id rzg2l_pinctrl_of_table[] = {
{
.compatible = "renesas,r9a07g043-pinctrl",
.data = &r9a07g043_data,
},
{
.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");