[PATCH v1] gpio: adp5585: add gpio driver for ADP5585 I/O Expander Controller
Alice Guo (OSS)
alice.guo at oss.nxp.com
Tue Sep 27 07:50:44 CEST 2022
A friendly ping...
Best Regards,
Alice Guo
> -----Original Message-----
> From: U-Boot <u-boot-bounces at lists.denx.de> On Behalf Of Alice Guo (OSS)
> Sent: Tuesday, September 6, 2022 5:38 PM
> To: sbabic at denx.de; festevam at gmail.com; sjg at chromium.org
> Cc: dl-uboot-imx <uboot-imx at nxp.com>; u-boot at lists.denx.de
> Subject: [PATCH v1] gpio: adp5585: add gpio driver for ADP5585 I/O Expander
> Controller
>
> From: Alice Guo <alice.guo at nxp.com>
>
> Signed-off-by: Alice Guo <alice.guo at nxp.com>
> ---
> arch/arm/include/asm/arch-imx9/gpio.h | 2 +
> drivers/gpio/Kconfig | 6 +
> drivers/gpio/Makefile | 1 +
> drivers/gpio/adp5585_gpio.c | 238
> ++++++++++++++++++++++++++
> 4 files changed, 247 insertions(+)
> create mode 100644 drivers/gpio/adp5585_gpio.c
>
> diff --git a/arch/arm/include/asm/arch-imx9/gpio.h
> b/arch/arm/include/asm/arch-imx9/gpio.h
> index 40732022e7..599f7511c3 100644
> --- a/arch/arm/include/asm/arch-imx9/gpio.h
> +++ b/arch/arm/include/asm/arch-imx9/gpio.h
> @@ -6,6 +6,8 @@
> #ifndef __ASM_ARCH_IMX9_GPIO_H
> #define __ASM_ARCH_IMX9_GPIO_H
>
> +#include <common.h>
> +
> struct gpio_regs {
> u32 gpio_pdor;
> u32 gpio_psor;
> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index
> c949f9d2f7..550ff9c586 100644
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -605,4 +605,10 @@ config TURRIS_OMNIA_MCU
> help
> Support for GPIOs on MCU connected to Turris Omnia via i2c.
>
> +config ADP5585_GPIO
> + bool "ADP5585 GPIO driver"
> + depends on DM_GPIO && DM_I2C
> + help
> + Support ADP5585 GPIO expander on i.MX platform.
> +
> endif
> diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index
> 9d718a554e..2f60b98384 100644
> --- a/drivers/gpio/Makefile
> +++ b/drivers/gpio/Makefile
> @@ -75,3 +75,4 @@ obj-$(CONFIG_SL28CPLD_GPIO) += sl28cpld-gpio.o
> obj-$(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_ADP5585_GPIO) += adp5585_gpio.o
> diff --git a/drivers/gpio/adp5585_gpio.c b/drivers/gpio/adp5585_gpio.c new
> file mode 100644 index 0000000000..ea0cb75459
> --- /dev/null
> +++ b/drivers/gpio/adp5585_gpio.c
> @@ -0,0 +1,238 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2022 NXP
> + *
> + * ADP5585 I/O Expander Controller
> + *
> + * Author: Alice Guo <alice.guo at 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),
> +};
> --
> 2.17.1
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