pinctrl: gpio: sx150x: add Semtech SX150x I2C GPIO expander and pinctrl driver

implement a driver to use semtech pinctrl and
 gpio expander, this driver is adapted from a
 existent linux driver that is written by
 Gregory Bean <gbean@codeaurora.org>.

Signed-off-by: Anis Chali <chalianis1@gmail.com>
This commit is contained in:
Anis Chali 2025-05-18 17:25:24 -04:00 committed by Tom Rini
parent a4fb99ce4e
commit 5451504256
3 changed files with 921 additions and 0 deletions

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@ -263,6 +263,24 @@ config PINCTRL_ROCKCHIP_RV1108
both the GPIO definitions and pin control functions for each both the GPIO definitions and pin control functions for each
available multiplex function. available multiplex function.
config PINCTRL_SX150X
bool "Semtech SX150x I2C GPIO expander pinctrl driver"
depends on DM && PINCTRL_FULL
help
Say yes here to provide support for Semtech SX150x-series I2C
GPIO expanders as pinctrl module.
Compatible models include:
- 8 bits: sx1508q, sx1502q
- 16 bits: sx1509q, sx1506q
config SPL_PINCTRL_SX150X
bool "Semtech SX150x I2C GPIO expander pinctrl driver in SPL"
depends on DM && SPL_PINCTRL_FULL
help
This option is an SPL-variant of the PINCTRL_SX150X option.
See the help of PINCTRL_SX150X for details.
config PINCTRL_SANDBOX config PINCTRL_SANDBOX
bool "Sandbox pinctrl driver" bool "Sandbox pinctrl driver"
depends on SANDBOX depends on SANDBOX

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@ -32,6 +32,7 @@ obj-$(CONFIG_PINCTRL_QE) += pinctrl-qe-io.o
obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
obj-$(CONFIG_PINCTRL_STI) += pinctrl-sti.o obj-$(CONFIG_PINCTRL_STI) += pinctrl-sti.o
obj-$(CONFIG_PINCTRL_STM32) += pinctrl_stm32.o obj-$(CONFIG_PINCTRL_STM32) += pinctrl_stm32.o
obj-$(CONFIG_$(PHASE_)PINCTRL_SX150X) += pinctrl-sx150x.o
obj-$(CONFIG_$(PHASE_)PINCTRL_STMFX) += pinctrl-stmfx.o obj-$(CONFIG_$(PHASE_)PINCTRL_STMFX) += pinctrl-stmfx.o
obj-y += broadcom/ obj-y += broadcom/
obj-$(CONFIG_PINCTRL_ZYNQMP) += pinctrl-zynqmp.o obj-$(CONFIG_PINCTRL_ZYNQMP) += pinctrl-zynqmp.o

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@ -0,0 +1,902 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2024, Exfo Inc - All Rights Reserved
*
* Author: Anis CHALI <anis.chali@exfo.com>
* inspired and adapted from linux driver of sx150x written by Gregory Bean
* <gbean@codeaurora.org>
*/
#include <asm/gpio.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <dm/device.h>
#include <dm/device_compat.h>
#include <dm/lists.h>
#include <dm/pinctrl.h>
#include <dt-bindings/gpio/gpio.h>
#include <i2c.h>
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <log.h>
#include <power/regulator.h>
#include <regmap.h>
#define err(format, arg...) printf("ERR:" format "\n", ##arg)
#define dbg(format, arg...) printf("DBG:" format "\n", ##arg)
#define SX150X_PIN(_pin, _name) { .pin = _pin, .name = _name }
/* The chip models of sx150x */
enum {
SX150X_123 = 0,
SX150X_456,
SX150X_789,
};
enum {
SX150X_789_REG_MISC_AUTOCLEAR_OFF = 1 << 0,
SX150X_MAX_REGISTER = 0xad,
SX150X_IRQ_TYPE_EDGE_RISING = 0x1,
SX150X_IRQ_TYPE_EDGE_FALLING = 0x2,
SX150X_789_RESET_KEY1 = 0x12,
SX150X_789_RESET_KEY2 = 0x34,
};
struct sx150x_123_pri {
u8 reg_pld_mode;
u8 reg_pld_table0;
u8 reg_pld_table1;
u8 reg_pld_table2;
u8 reg_pld_table3;
u8 reg_pld_table4;
u8 reg_advanced;
};
struct sx150x_456_pri {
u8 reg_pld_mode;
u8 reg_pld_table0;
u8 reg_pld_table1;
u8 reg_pld_table2;
u8 reg_pld_table3;
u8 reg_pld_table4;
u8 reg_advanced;
};
struct sx150x_789_pri {
u8 reg_drain;
u8 reg_polarity;
u8 reg_clock;
u8 reg_misc;
u8 reg_reset;
u8 ngpios;
};
struct sx150x_pin_desc {
u32 pin;
u8 *name;
};
struct sx150x_device_data {
u8 model;
u8 reg_pullup;
u8 reg_pulldn;
u8 reg_dir;
u8 reg_data;
u8 reg_irq_mask;
u8 reg_irq_src;
u8 reg_sense;
u8 ngpios;
union {
struct sx150x_123_pri x123;
struct sx150x_456_pri x456;
struct sx150x_789_pri x789;
} pri;
const struct sx150x_pin_desc *pins;
unsigned int npins;
};
struct sx150x_pinctrl_priv {
char name[32];
struct udevice *gpio;
struct udevice *i2c;
const struct sx150x_device_data *data;
};
static const struct sx150x_pin_desc sx150x_4_pins[] = {
SX150X_PIN(0, "gpio0"), SX150X_PIN(1, "gpio1"), SX150X_PIN(2, "gpio2"),
SX150X_PIN(3, "gpio3"), SX150X_PIN(4, "oscio"),
};
static const struct sx150x_pin_desc sx150x_8_pins[] = {
SX150X_PIN(0, "gpio0"), SX150X_PIN(1, "gpio1"), SX150X_PIN(2, "gpio2"),
SX150X_PIN(3, "gpio3"), SX150X_PIN(4, "gpio4"), SX150X_PIN(5, "gpio5"),
SX150X_PIN(6, "gpio6"), SX150X_PIN(7, "gpio7"), SX150X_PIN(8, "oscio"),
};
static const struct sx150x_pin_desc sx150x_16_pins[] = {
SX150X_PIN(0, "gpio0"), SX150X_PIN(1, "gpio1"),
SX150X_PIN(2, "gpio2"), SX150X_PIN(3, "gpio3"),
SX150X_PIN(4, "gpio4"), SX150X_PIN(5, "gpio5"),
SX150X_PIN(6, "gpio6"), SX150X_PIN(7, "gpio7"),
SX150X_PIN(8, "gpio8"), SX150X_PIN(9, "gpio9"),
SX150X_PIN(10, "gpio10"), SX150X_PIN(11, "gpio11"),
SX150X_PIN(12, "gpio12"), SX150X_PIN(13, "gpio13"),
SX150X_PIN(14, "gpio14"), SX150X_PIN(15, "gpio15"),
SX150X_PIN(16, "oscio"),
};
static const struct sx150x_device_data sx1501q_device_data = {
.model = SX150X_123,
.reg_pullup = 0x02,
.reg_pulldn = 0x03,
.reg_dir = 0x01,
.reg_data = 0x00,
.reg_irq_mask = 0x05,
.reg_irq_src = 0x08,
.reg_sense = 0x07,
.pri.x123 = {
.reg_pld_mode = 0x10,
.reg_pld_table0 = 0x11,
.reg_pld_table2 = 0x13,
.reg_advanced = 0xad,
},
.ngpios = 4,
.pins = sx150x_4_pins,
.npins = 4, /* oscio not available */
};
static const struct sx150x_device_data sx1502q_device_data = {
.model = SX150X_123,
.reg_pullup = 0x02,
.reg_pulldn = 0x03,
.reg_dir = 0x01,
.reg_data = 0x00,
.reg_irq_mask = 0x05,
.reg_irq_src = 0x08,
.reg_sense = 0x06,
.pri.x123 = {
.reg_pld_mode = 0x10,
.reg_pld_table0 = 0x11,
.reg_pld_table1 = 0x12,
.reg_pld_table2 = 0x13,
.reg_pld_table3 = 0x14,
.reg_pld_table4 = 0x15,
.reg_advanced = 0xad,
},
.ngpios = 8,
.pins = sx150x_8_pins,
.npins = 8, /* oscio not available */
};
static const struct sx150x_device_data sx1503q_device_data = {
.model = SX150X_123,
.reg_pullup = 0x04,
.reg_pulldn = 0x06,
.reg_dir = 0x02,
.reg_data = 0x00,
.reg_irq_mask = 0x08,
.reg_irq_src = 0x0e,
.reg_sense = 0x0a,
.pri.x123 = {
.reg_pld_mode = 0x20,
.reg_pld_table0 = 0x22,
.reg_pld_table1 = 0x24,
.reg_pld_table2 = 0x26,
.reg_pld_table3 = 0x28,
.reg_pld_table4 = 0x2a,
.reg_advanced = 0xad,
},
.ngpios = 16,
.pins = sx150x_16_pins,
.npins = 16, /* oscio not available */
};
static const struct sx150x_device_data sx1504q_device_data = {
.model = SX150X_456,
.reg_pullup = 0x02,
.reg_pulldn = 0x03,
.reg_dir = 0x01,
.reg_data = 0x00,
.reg_irq_mask = 0x05,
.reg_irq_src = 0x08,
.reg_sense = 0x07,
.pri.x456 = {
.reg_pld_mode = 0x10,
.reg_pld_table0 = 0x11,
.reg_pld_table2 = 0x13,
},
.ngpios = 4,
.pins = sx150x_4_pins,
.npins = 4, /* oscio not available */
};
static const struct sx150x_device_data sx1505q_device_data = {
.model = SX150X_456,
.reg_pullup = 0x02,
.reg_pulldn = 0x03,
.reg_dir = 0x01,
.reg_data = 0x00,
.reg_irq_mask = 0x05,
.reg_irq_src = 0x08,
.reg_sense = 0x06,
.pri.x456 = {
.reg_pld_mode = 0x10,
.reg_pld_table0 = 0x11,
.reg_pld_table1 = 0x12,
.reg_pld_table2 = 0x13,
.reg_pld_table3 = 0x14,
.reg_pld_table4 = 0x15,
},
.ngpios = 8,
.pins = sx150x_8_pins,
.npins = 8, /* oscio not available */
};
static const struct sx150x_device_data sx1506q_device_data = {
.model = SX150X_456,
.reg_pullup = 0x04,
.reg_pulldn = 0x06,
.reg_dir = 0x02,
.reg_data = 0x00,
.reg_irq_mask = 0x08,
.reg_irq_src = 0x0e,
.reg_sense = 0x0a,
.pri.x456 = {
.reg_pld_mode = 0x20,
.reg_pld_table0 = 0x22,
.reg_pld_table1 = 0x24,
.reg_pld_table2 = 0x26,
.reg_pld_table3 = 0x28,
.reg_pld_table4 = 0x2a,
.reg_advanced = 0xad,
},
.ngpios = 16,
.pins = sx150x_16_pins,
.npins = 16, /* oscio not available */
};
static const struct sx150x_device_data sx1507q_device_data = {
.model = SX150X_789,
.reg_pullup = 0x03,
.reg_pulldn = 0x04,
.reg_dir = 0x07,
.reg_data = 0x08,
.reg_irq_mask = 0x09,
.reg_irq_src = 0x0b,
.reg_sense = 0x0a,
.pri.x789 = {
.reg_drain = 0x05,
.reg_polarity = 0x06,
.reg_clock = 0x0d,
.reg_misc = 0x0e,
.reg_reset = 0x7d,
},
.ngpios = 4,
.pins = sx150x_4_pins,
.npins = ARRAY_SIZE(sx150x_4_pins),
};
static const struct sx150x_device_data sx1508q_device_data = {
.model = SX150X_789,
.reg_pullup = 0x03,
.reg_pulldn = 0x04,
.reg_dir = 0x07,
.reg_data = 0x08,
.reg_irq_mask = 0x09,
.reg_irq_src = 0x0c,
.reg_sense = 0x0a,
.pri.x789 = {
.reg_drain = 0x05,
.reg_polarity = 0x06,
.reg_clock = 0x0f,
.reg_misc = 0x10,
.reg_reset = 0x7d,
},
.ngpios = 8,
.pins = sx150x_8_pins,
.npins = ARRAY_SIZE(sx150x_8_pins),
};
static const struct sx150x_device_data sx1509q_device_data = {
.model = SX150X_789,
.reg_pullup = 0x06,
.reg_pulldn = 0x08,
.reg_dir = 0x0e,
.reg_data = 0x10,
.reg_irq_mask = 0x12,
.reg_irq_src = 0x18,
.reg_sense = 0x14,
.pri.x789 = {
.reg_drain = 0x0a,
.reg_polarity = 0x0c,
.reg_clock = 0x1e,
.reg_misc = 0x1f,
.reg_reset = 0x7d,
},
.ngpios = 16,
.pins = sx150x_16_pins,
.npins = ARRAY_SIZE(sx150x_16_pins),
};
static bool sx150x_pin_is_oscio(struct sx150x_pinctrl_priv *pctl,
unsigned int pin)
{
if (pin >= pctl->data->npins)
return false;
/* OSCIO pin is only present in 789 devices */
if (pctl->data->model != SX150X_789)
return false;
return !strcmp(pctl->data->pins[pin].name, "oscio");
}
static int sx150x_reg_width(struct sx150x_pinctrl_priv *pctl, unsigned int reg)
{
const struct sx150x_device_data *data = pctl->data;
if (reg == data->reg_sense) {
/*
* RegSense packs two bits of configuration per GPIO,
* so we'd need to read twice as many bits as there
* are GPIO in our chip
*/
return 2 * data->ngpios;
} else if ((data->model == SX150X_789 &&
(reg == data->pri.x789.reg_misc ||
reg == data->pri.x789.reg_clock ||
reg == data->pri.x789.reg_reset)) ||
(data->model == SX150X_123 &&
reg == data->pri.x123.reg_advanced) ||
(data->model == SX150X_456 && data->pri.x456.reg_advanced &&
reg == data->pri.x456.reg_advanced)) {
return 8;
} else {
return data->ngpios;
}
}
static unsigned int sx150x_maybe_swizzle(struct sx150x_pinctrl_priv *pctl,
unsigned int reg, unsigned int val)
{
unsigned int a, b;
const struct sx150x_device_data *data = pctl->data;
/*
* Whereas SX1509 presents RegSense in a simple layout as such:
* reg [ f f e e d d c c ]
* reg 1 [ b b a a 9 9 8 8 ]
* reg 2 [ 7 7 6 6 5 5 4 4 ]
* reg 3 [ 3 3 2 2 1 1 0 0 ]
*
* SX1503 and SX1506 deviate from that data layout, instead storing
* their contents as follows:
*
* reg [ f f e e d d c c ]
* reg 1 [ 7 7 6 6 5 5 4 4 ]
* reg 2 [ b b a a 9 9 8 8 ]
* reg 3 [ 3 3 2 2 1 1 0 0 ]
*
* so, taking that into account, we swap two
* inner bytes of a 4-byte result
*/
if (reg == data->reg_sense && data->ngpios == 16 &&
(data->model == SX150X_123 || data->model == SX150X_456)) {
a = val & 0x00ff0000;
b = val & 0x0000ff00;
val &= 0xff0000ff;
val |= b << 8;
val |= a >> 8;
}
return val;
}
/*
* In order to mask the differences between 16 and 8 bit expander
* devices we set up a sligthly ficticious regmap that pretends to be
* a set of 32-bit (to accommodate RegSenseLow/RegSenseHigh
* pair/quartet) registers and transparently reconstructs those
* registers via multiple I2C/SMBus reads
*
* This way the rest of the driver code, interfacing with the chip via
* regmap API, can work assuming that each GPIO pin is represented by
* a group of bits at an offset proportional to GPIO number within a
* given register.
*/
static int sx150x_reg_read(struct sx150x_pinctrl_priv *pctl, unsigned int reg,
unsigned int *result)
{
int ret, n;
const int width = sx150x_reg_width(pctl, reg);
unsigned int idx, val;
/*
* There are four potential cases covered by this function:
*
* 1) 8-pin chip, single configuration bit register
*
* This is trivial the code below just needs to read:
* reg [ 7 6 5 4 3 2 1 0 ]
*
* 2) 8-pin chip, double configuration bit register (RegSense)
*
* The read will be done as follows:
* reg [ 7 7 6 6 5 5 4 4 ]
* reg 1 [ 3 3 2 2 1 1 0 0 ]
*
* 3) 16-pin chip, single configuration bit register
*
* The read will be done as follows:
* reg [ f e d c b a 9 8 ]
* reg 1 [ 7 6 5 4 3 2 1 0 ]
*
* 4) 16-pin chip, double configuration bit register (RegSense)
*
* The read will be done as follows:
* reg [ f f e e d d c c ]
* reg 1 [ b b a a 9 9 8 8 ]
* reg 2 [ 7 7 6 6 5 5 4 4 ]
* reg 3 [ 3 3 2 2 1 1 0 0 ]
*/
for (n = width, val = 0, idx = reg; n > 0; n -= 8, idx) {
val <<= 8;
ret = dm_i2c_reg_read(pctl->i2c, idx);
if (ret < 0)
return ret;
val |= ret;
}
*result = sx150x_maybe_swizzle(pctl, reg, val);
return 0;
}
static int sx150x_reg_write(struct sx150x_pinctrl_priv *pctl, unsigned int reg,
unsigned int val)
{
int ret, n;
const int width = sx150x_reg_width(pctl, reg);
val = sx150x_maybe_swizzle(pctl, reg, val);
n = (width - 1) & ~7;
do {
const u8 byte = (val >> n) & 0xff;
ret = dm_i2c_reg_write(pctl->i2c, reg, byte);
if (ret < 0)
return ret;
reg;
n -= 8;
} while (n >= 0);
return 0;
}
static unsigned int sx150x_read(struct sx150x_pinctrl_priv *pctl, uint reg)
{
int ret;
unsigned int res;
ret = sx150x_reg_read(pctl, reg, &res);
if (ret) {
err("%s: failed to read reg(%x) with %d", pctl->name, reg, ret);
return ret;
}
return res;
}
static int sx150x_write(struct sx150x_pinctrl_priv *pctl, uint reg, uint val)
{
return sx150x_reg_write(pctl, reg, val);
}
static int sx150x_write_bits(struct sx150x_pinctrl_priv *pctl, uint reg,
uint mask, uint val)
{
int orig, tmp;
orig = sx150x_read(pctl, reg);
if (orig < 0)
return orig;
tmp = orig & ~mask;
tmp |= val & mask;
return sx150x_write(pctl, reg, tmp);
}
static int sx150x_reset(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
int err;
err = sx150x_write(pctl, pctl->data->pri.x789.reg_reset,
SX150X_789_RESET_KEY1);
if (err < 0)
return err;
err = sx150x_write(pctl, pctl->data->pri.x789.reg_reset,
SX150X_789_RESET_KEY2);
return err;
}
static int sx150x_init_misc(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
u8 reg, value;
switch (pctl->data->model) {
case SX150X_789:
reg = pctl->data->pri.x789.reg_misc;
value = 0x0;
break;
case SX150X_456:
reg = pctl->data->pri.x456.reg_advanced;
value = 0x00;
/*
* Only SX1506 has RegAdvanced, SX1504/5 are expected
* to initialize this offset to zero
*/
if (!reg)
return 0;
break;
case SX150X_123:
reg = pctl->data->pri.x123.reg_advanced;
value = 0x00;
break;
default:
WARN(1, "Unknown chip model %d\n", pctl->data->model);
return -EINVAL;
}
return sx150x_write(pctl, reg, value);
}
static int sx150x_init_hw(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
const u8 reg[] = {
[SX150X_789] = pctl->data->pri.x789.reg_polarity,
[SX150X_456] = pctl->data->pri.x456.reg_pld_mode,
[SX150X_123] = pctl->data->pri.x123.reg_pld_mode,
};
int err;
if (pctl->data->model == SX150X_789 &&
dev_read_bool(dev, "semtech,probe-reset")) {
err = sx150x_reset(dev);
if (err < 0)
return err;
}
err = sx150x_init_misc(dev);
if (err < 0)
return err;
/* Set all pins to work in normal mode */
return sx150x_write(pctl, reg[pctl->data->model], 0);
}
static int sx150x_gpio_get_value(struct udevice *dev, unsigned int offset)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
if (sx150x_pin_is_oscio(pctl, offset))
return -EINVAL;
int val = sx150x_read(pctl, pctl->data->reg_data);
return !!(val & BIT(offset));
}
static int sx150x_gpio_set(struct udevice *dev, unsigned int offset, int value)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
return sx150x_write_bits(pctl, pctl->data->reg_data, BIT(offset),
value ? BIT(offset) : 0);
}
static int sx150x_gpio_oscio_set(struct udevice *dev, int value)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
return sx150x_write(pctl, pctl->data->pri.x789.reg_clock,
(value ? 0x1f : 0x10));
}
static int sx150x_gpio_set_value(struct udevice *dev, unsigned int offset,
int value)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
if (sx150x_pin_is_oscio(pctl, offset))
sx150x_gpio_oscio_set(dev->parent, value);
else
sx150x_gpio_set(dev->parent, offset, value);
return 0;
}
static int sx150x_gpio_get_direction(struct udevice *dev, unsigned int offset)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
int val;
if (sx150x_pin_is_oscio(pctl, offset))
return GPIOF_OUTPUT;
val = sx150x_read(pctl, pctl->data->reg_data);
if (val < 0)
return val;
if (val & BIT(offset))
return GPIOF_INPUT;
return GPIOF_OUTPUT;
}
static int sx150x_gpio_direction_input(struct udevice *dev, unsigned int offset)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
if (sx150x_pin_is_oscio(pctl, offset))
return -EINVAL;
return sx150x_write_bits(pctl, pctl->data->reg_dir, BIT(offset),
BIT(offset));
}
static int sx150x_gpio_direction_output(struct udevice *dev,
unsigned int offset, int value)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
int ret;
if (sx150x_pin_is_oscio(pctl, offset))
return sx150x_gpio_oscio_set(dev, value);
ret = sx150x_write_bits(pctl, pctl->data->reg_dir, BIT(offset), 0);
if (ret < 0)
return ret;
return sx150x_gpio_set(dev, offset, value);
}
static int sx150x_gpio_probe(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev->parent);
struct gpio_dev_priv *uc_priv;
uc_priv = dev_get_uclass_priv(dev);
uc_priv->bank_name = pctl->name;
uc_priv->gpio_count = pctl->data->ngpios;
return 0;
}
static struct dm_gpio_ops sx150x_gpio_ops = {
.get_value = sx150x_gpio_get_value,
.set_value = sx150x_gpio_set_value,
.get_function = sx150x_gpio_get_direction,
.direction_input = sx150x_gpio_direction_input,
.direction_output = sx150x_gpio_direction_output,
};
static struct driver sx150x_gpio_driver = {
.name = "sx150x-gpio",
.id = UCLASS_GPIO,
.probe = sx150x_gpio_probe,
.ops = &sx150x_gpio_ops,
};
static const struct udevice_id sx150x_pinctrl_of_match[] = {
{ .compatible = "semtech,sx1501q",
.data = (ulong)&sx1501q_device_data },
{ .compatible = "semtech,sx1502q",
.data = (ulong)&sx1502q_device_data },
{ .compatible = "semtech,sx1503q",
.data = (ulong)&sx1503q_device_data },
{ .compatible = "semtech,sx1504q",
.data = (ulong)&sx1504q_device_data },
{ .compatible = "semtech,sx1505q",
.data = (ulong)&sx1505q_device_data },
{ .compatible = "semtech,sx1506q",
.data = (ulong)&sx1506q_device_data },
{ .compatible = "semtech,sx1507q",
.data = (ulong)&sx1507q_device_data },
{ .compatible = "semtech,sx1508q",
.data = (ulong)&sx1508q_device_data },
{ .compatible = "semtech,sx1509q",
.data = (ulong)&sx1509q_device_data },
{},
};
static const struct pinconf_param sx150x_conf_params[] = {
{ "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
{ "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
{ "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
{ "drive-open-drain", PIN_CONFIG_DRIVE_OPEN_DRAIN, 0 },
{ "drive-push-pull", PIN_CONFIG_DRIVE_PUSH_PULL, 0 },
{ "output", PIN_CONFIG_OUTPUT, 0 },
};
static int sx150x_pinctrl_get_pins_count(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
return pctl->data->ngpios;
}
static const char *sx150x_pinctrl_get_pin_name(struct udevice *dev,
unsigned int selector)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
static char pin_name[PINNAME_SIZE];
snprintf(pin_name, PINNAME_SIZE, "%s", pctl->data->pins[selector].name);
return pin_name;
}
static int sx150x_pinctrl_conf_set(struct udevice *dev, unsigned int pin,
unsigned int param, unsigned int arg)
{
int ret;
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
if (sx150x_pin_is_oscio(pctl, pin)) {
if (param == PIN_CONFIG_OUTPUT) {
ret = sx150x_gpio_direction_output(pctl->gpio, pin,
arg);
if (ret < 0)
return ret;
} else {
return -EOPNOTSUPP;
}
}
switch (param) {
case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
case PIN_CONFIG_BIAS_DISABLE:
ret = sx150x_write_bits(pctl, pctl->data->reg_pulldn, BIT(pin),
0);
if (ret < 0)
return ret;
ret = sx150x_write_bits(pctl, pctl->data->reg_pullup, BIT(pin),
0);
if (ret < 0)
return ret;
break;
case PIN_CONFIG_BIAS_PULL_UP:
ret = sx150x_write_bits(pctl, pctl->data->reg_pullup, BIT(pin),
BIT(pin));
if (ret < 0)
return ret;
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
ret = sx150x_write_bits(pctl, pctl->data->reg_pulldn, BIT(pin),
BIT(pin));
if (ret < 0)
return ret;
break;
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
if (pctl->data->model != SX150X_789 ||
sx150x_pin_is_oscio(pctl, pin))
return -EOPNOTSUPP;
ret = sx150x_write_bits(pctl, pctl->data->pri.x789.reg_drain,
BIT(pin), BIT(pin));
if (ret < 0)
return ret;
break;
case PIN_CONFIG_DRIVE_PUSH_PULL:
if (pctl->data->model != SX150X_789 ||
sx150x_pin_is_oscio(pctl, pin))
return 0;
ret = sx150x_write_bits(pctl, pctl->data->pri.x789.reg_drain,
BIT(pin), 0);
if (ret < 0)
return ret;
break;
case PIN_CONFIG_OUTPUT:
ret = sx150x_gpio_direction_output(pctl->gpio, pin, arg);
if (ret < 0)
return ret;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int sx150x_pinctrl_bind(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_plat(dev);
int ret, reg;
if (!dev_read_bool(dev, "gpio-controller"))
return 0;
reg = (int)dev_read_addr_ptr(dev);
ret = device_bind(dev, &sx150x_gpio_driver, dev_read_name(dev), NULL,
dev_ofnode(dev), &pctl->gpio);
if (ret)
return ret;
return 0;
}
static int sx150x_pinctrl_probe(struct udevice *dev)
{
struct sx150x_pinctrl_priv *pctl = dev_get_priv(dev);
const struct sx150x_device_data *drv_data =
(const struct sx150x_device_data *)dev_get_driver_data(dev);
int ret, reg;
if (!drv_data)
return -ENOENT;
pctl->data = drv_data;
reg = (int)dev_read_addr_ptr(dev);
ret = dm_i2c_probe(dev->parent, reg, 0, &pctl->i2c);
if (ret) {
err("Cannot find I2C chip %02x (%d)", reg, ret);
return ret;
}
ret = sx150x_init_hw(dev);
if (ret) {
err("Cannot initialize GPIO expander at %02x with %d", reg,
ret);
return ret;
}
snprintf(pctl->name, 32, "gpio-ext@%x_", reg);
return 0;
}
static struct pinctrl_ops sx150x_pinctrl_ops = {
.set_state = pinctrl_generic_set_state,
.get_pins_count = sx150x_pinctrl_get_pins_count,
.get_pin_name = sx150x_pinctrl_get_pin_name,
#if CONFIG_IS_ENABLED(PINCONF)
.pinconf_set = sx150x_pinctrl_conf_set,
.pinconf_num_params = ARRAY_SIZE(sx150x_conf_params),
.pinconf_params = sx150x_conf_params,
#endif
};
U_BOOT_DRIVER(sx150x_pinctrl) = {
.name = "sx150x-pinctrl",
.id = UCLASS_PINCTRL,
.of_match = sx150x_pinctrl_of_match,
.priv_auto = sizeof(struct sx150x_pinctrl_priv),
.ops = &sx150x_pinctrl_ops,
.probe = sx150x_pinctrl_probe,
.bind = sx150x_pinctrl_bind,
};