mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 15:41:40 +00:00
gpio: adp5585: add gpio driver for ADP5585 I/O Expander Controller
Add gpio driver for ADP5585 I/O Expander Controller. The ADP5585 is a 10 input/output port expander and can be used to increase the number of I/Os available to a processor. Signed-off-by: Alice Guo <alice.guo@nxp.com>
This commit is contained in:
parent
e8f58df178
commit
71858454fe
3 changed files with 245 additions and 0 deletions
|
@ -611,4 +611,10 @@ config FTGPIO010
|
|||
help
|
||||
Support for GPIOs on Faraday Technology's FTGPIO010 controller.
|
||||
|
||||
config ADP5585_GPIO
|
||||
bool "ADP5585 GPIO driver"
|
||||
depends on DM_GPIO && DM_I2C
|
||||
help
|
||||
Support ADP5585 GPIO expander.
|
||||
|
||||
endif
|
||||
|
|
|
@ -76,3 +76,4 @@ obj-$(CONFIG_ZYNQMP_GPIO_MODEPIN) += zynqmp_gpio_modepin.o
|
|||
obj-$(CONFIG_SLG7XL45106_I2C_GPO) += gpio_slg7xl45106.o
|
||||
obj-$(CONFIG_$(SPL_TPL_)TURRIS_OMNIA_MCU) += turris_omnia_mcu.o
|
||||
obj-$(CONFIG_FTGPIO010) += ftgpio010.o
|
||||
obj-$(CONFIG_ADP5585_GPIO) += adp5585_gpio.o
|
||||
|
|
238
drivers/gpio/adp5585_gpio.c
Normal file
238
drivers/gpio/adp5585_gpio.c
Normal file
|
@ -0,0 +1,238 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+
|
||||
/*
|
||||
* Copyright 2022 NXP
|
||||
*
|
||||
* ADP5585 I/O Expander Controller
|
||||
*
|
||||
* Author: Alice Guo <alice.guo@nxp.com>
|
||||
*/
|
||||
|
||||
#include <asm/gpio.h>
|
||||
#include <dm.h>
|
||||
#include <dt-bindings/gpio/gpio.h>
|
||||
#include <i2c.h>
|
||||
|
||||
#define ADP5585_ID 0x00
|
||||
#define ADP5585_INT_STATUS 0x01
|
||||
#define ADP5585_STATUS 0x02
|
||||
#define ADP5585_FIFO_1 0x03
|
||||
#define ADP5585_FIFO_2 0x04
|
||||
#define ADP5585_FIFO_3 0x05
|
||||
#define ADP5585_FIFO_4 0x06
|
||||
#define ADP5585_FIFO_5 0x07
|
||||
#define ADP5585_FIFO_6 0x08
|
||||
#define ADP5585_FIFO_7 0x09
|
||||
#define ADP5585_FIFO_8 0x0A
|
||||
#define ADP5585_FIFO_9 0x0B
|
||||
#define ADP5585_FIFO_10 0x0C
|
||||
#define ADP5585_FIFO_11 0x0D
|
||||
#define ADP5585_FIFO_12 0x0E
|
||||
#define ADP5585_FIFO_13 0x0F
|
||||
#define ADP5585_FIFO_14 0x10
|
||||
#define ADP5585_FIFO_15 0x11
|
||||
#define ADP5585_FIFO_16 0x12
|
||||
#define ADP5585_GPI_INT_STAT_A 0x13
|
||||
#define ADP5585_GPI_INT_STAT_B 0x14
|
||||
#define ADP5585_GPI_STATUS_A 0x15
|
||||
#define ADP5585_GPI_STATUS_B 0x16
|
||||
#define ADP5585_RPULL_CONFIG_A 0x17
|
||||
#define ADP5585_RPULL_CONFIG_B 0x18
|
||||
#define ADP5585_RPULL_CONFIG_C 0x19
|
||||
#define ADP5585_RPULL_CONFIG_D 0x1A
|
||||
#define ADP5585_GPI_INT_LEVEL_A 0x1B
|
||||
#define ADP5585_GPI_INT_LEVEL_B 0x1C
|
||||
#define ADP5585_GPI_EVENT_EN_A 0x1D
|
||||
#define ADP5585_GPI_EVENT_EN_B 0x1E
|
||||
#define ADP5585_GPI_INTERRUPT_EN_A 0x1F
|
||||
#define ADP5585_GPI_INTERRUPT_EN_B 0x20
|
||||
#define ADP5585_DEBOUNCE_DIS_A 0x21
|
||||
#define ADP5585_DEBOUNCE_DIS_B 0x22
|
||||
#define ADP5585_GPO_DATA_OUT_A 0x23
|
||||
#define ADP5585_GPO_DATA_OUT_B 0x24
|
||||
#define ADP5585_GPO_OUT_MODE_A 0x25
|
||||
#define ADP5585_GPO_OUT_MODE_B 0x26
|
||||
#define ADP5585_GPIO_DIRECTION_A 0x27
|
||||
#define ADP5585_GPIO_DIRECTION_B 0x28
|
||||
#define ADP5585_RESET1_EVENT_A 0x29
|
||||
#define ADP5585_RESET1_EVENT_B 0x2A
|
||||
#define ADP5585_RESET1_EVENT_C 0x2B
|
||||
#define ADP5585_RESET2_EVENT_A 0x2C
|
||||
#define ADP5585_RESET2_EVENT_B 0x2D
|
||||
#define ADP5585_RESET_CFG 0x2E
|
||||
#define ADP5585_PWM_OFFT_LOW 0x2F
|
||||
#define ADP5585_PWM_OFFT_HIGH 0x30
|
||||
#define ADP5585_PWM_ONT_LOW 0x31
|
||||
#define ADP5585_PWM_ONT_HIGH 0x32
|
||||
#define ADP5585_PWM_CFG 0x33
|
||||
#define ADP5585_LOGIC_CFG 0x34
|
||||
#define ADP5585_LOGIC_FF_CFG 0x35
|
||||
#define ADP5585_LOGIC_INT_EVENT_EN 0x36
|
||||
#define ADP5585_POLL_PTIME_CFG 0x37
|
||||
#define ADP5585_PIN_CONFIG_A 0x38
|
||||
#define ADP5585_PIN_CONFIG_B 0x39
|
||||
#define ADP5585_PIN_CONFIG_D 0x3A
|
||||
#define ADP5585_GENERAL_CFG 0x3B
|
||||
#define ADP5585_INT_EN 0x3C
|
||||
|
||||
#define ADP5585_MAXGPIO 10
|
||||
#define ADP5585_BANK(offs) ((offs) > 4)
|
||||
#define ADP5585_BIT(offs) ((offs) > 4 ? \
|
||||
1u << ((offs) - 5) : 1u << (offs))
|
||||
|
||||
struct adp5585_plat {
|
||||
fdt_addr_t addr;
|
||||
u8 id;
|
||||
u8 dat_out[2];
|
||||
u8 dir[2];
|
||||
};
|
||||
|
||||
static int adp5585_direction_input(struct udevice *dev, unsigned int offset)
|
||||
{
|
||||
int ret;
|
||||
unsigned int bank;
|
||||
struct adp5585_plat *plat = dev_get_plat(dev);
|
||||
|
||||
bank = ADP5585_BANK(offset);
|
||||
|
||||
plat->dir[bank] &= ~ADP5585_BIT(offset);
|
||||
ret = dm_i2c_write(dev, ADP5585_GPIO_DIRECTION_A + bank, &plat->dir[bank], 1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int adp5585_direction_output(struct udevice *dev, unsigned int offset,
|
||||
int value)
|
||||
{
|
||||
int ret;
|
||||
unsigned int bank, bit;
|
||||
struct adp5585_plat *plat = dev_get_plat(dev);
|
||||
|
||||
bank = ADP5585_BANK(offset);
|
||||
bit = ADP5585_BIT(offset);
|
||||
|
||||
plat->dir[bank] |= bit;
|
||||
|
||||
if (value)
|
||||
plat->dat_out[bank] |= bit;
|
||||
else
|
||||
plat->dat_out[bank] &= ~bit;
|
||||
|
||||
ret = dm_i2c_write(dev, ADP5585_GPO_DATA_OUT_A + bank, &plat->dat_out[bank], 1);
|
||||
ret |= dm_i2c_write(dev, ADP5585_GPIO_DIRECTION_A + bank, &plat->dir[bank], 1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int adp5585_get_value(struct udevice *dev, unsigned int offset)
|
||||
{
|
||||
struct adp5585_plat *plat = dev_get_plat(dev);
|
||||
unsigned int bank = ADP5585_BANK(offset);
|
||||
unsigned int bit = ADP5585_BIT(offset);
|
||||
u8 val;
|
||||
|
||||
if (plat->dir[bank] & bit)
|
||||
val = plat->dat_out[bank];
|
||||
else
|
||||
dm_i2c_read(dev, ADP5585_GPI_STATUS_A + bank, &val, 1);
|
||||
|
||||
return !!(val & bit);
|
||||
}
|
||||
|
||||
static int adp5585_set_value(struct udevice *dev, unsigned int offset, int value)
|
||||
{
|
||||
int ret;
|
||||
unsigned int bank, bit;
|
||||
struct adp5585_plat *plat = dev_get_plat(dev);
|
||||
|
||||
bank = ADP5585_BANK(offset);
|
||||
bit = ADP5585_BIT(offset);
|
||||
|
||||
if (value)
|
||||
plat->dat_out[bank] |= bit;
|
||||
else
|
||||
plat->dat_out[bank] &= ~bit;
|
||||
|
||||
ret = dm_i2c_write(dev, ADP5585_GPO_DATA_OUT_A + bank, &plat->dat_out[bank], 1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int adp5585_get_function(struct udevice *dev, unsigned int offset)
|
||||
{
|
||||
unsigned int bank, bit, dir;
|
||||
struct adp5585_plat *plat = dev_get_plat(dev);
|
||||
|
||||
bank = ADP5585_BANK(offset);
|
||||
bit = ADP5585_BIT(offset);
|
||||
dir = plat->dir[bank] & bit;
|
||||
|
||||
if (!dir)
|
||||
return GPIOF_INPUT;
|
||||
else
|
||||
return GPIOF_OUTPUT;
|
||||
}
|
||||
|
||||
static int adp5585_xlate(struct udevice *dev, struct gpio_desc *desc,
|
||||
struct ofnode_phandle_args *args)
|
||||
{
|
||||
desc->offset = args->args[0];
|
||||
desc->flags = args->args[1] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct dm_gpio_ops adp5585_ops = {
|
||||
.direction_input = adp5585_direction_input,
|
||||
.direction_output = adp5585_direction_output,
|
||||
.get_value = adp5585_get_value,
|
||||
.set_value = adp5585_set_value,
|
||||
.get_function = adp5585_get_function,
|
||||
.xlate = adp5585_xlate,
|
||||
};
|
||||
|
||||
static int adp5585_probe(struct udevice *dev)
|
||||
{
|
||||
struct adp5585_plat *plat = dev_get_plat(dev);
|
||||
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
|
||||
int ret;
|
||||
|
||||
if (!plat)
|
||||
return 0;
|
||||
|
||||
plat->addr = dev_read_addr(dev);
|
||||
if (plat->addr == FDT_ADDR_T_NONE)
|
||||
return -EINVAL;
|
||||
|
||||
ret = dm_i2c_read(dev, ADP5585_ID, &plat->id, 1);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
uc_priv->gpio_count = ADP5585_MAXGPIO;
|
||||
uc_priv->bank_name = "adp5585-gpio";
|
||||
|
||||
for (int i = 0; i < 2; i++) {
|
||||
ret = dm_i2c_read(dev, ADP5585_GPO_DATA_OUT_A + i, &plat->dat_out[i], 1);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = dm_i2c_read(dev, ADP5585_GPIO_DIRECTION_A + i, &plat->dir[i], 1);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct udevice_id adp5585_ids[] = {
|
||||
{ .compatible = "adp5585" },
|
||||
{ }
|
||||
};
|
||||
|
||||
U_BOOT_DRIVER(adp5585) = {
|
||||
.name = "adp5585",
|
||||
.id = UCLASS_GPIO,
|
||||
.of_match = adp5585_ids,
|
||||
.probe = adp5585_probe,
|
||||
.ops = &adp5585_ops,
|
||||
.plat_auto = sizeof(struct adp5585_plat),
|
||||
};
|
Loading…
Reference in a new issue