This adds support for pin configuration on the Analog Devices SC5XX SoC family. This commit is largely a port of the Linux driver, which has not yet been submitted upstream.
Co-developed-by: Nathan Barrett-Morrison nathan.morrison@timesys.com Signed-off-by: Nathan Barrett-Morrison nathan.morrison@timesys.com Co-developed-by: Ian Roberts ian.roberts@timesys.com Signed-off-by: Ian Roberts ian.roberts@timesys.com Signed-off-by: Vasileios Bimpikas vasileios.bimpikas@analog.com Signed-off-by: Utsav Agarwal utsav.agarwal@analog.com Signed-off-by: Arturs Artamonovs arturs.artamonovs@analog.com Signed-off-by: Greg Malysa greg.malysa@timesys.com
---
--- MAINTAINERS | 1 + drivers/pinctrl/Kconfig | 8 ++ drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-adi-adsp.c | 156 +++++++++++++++++++++++++ include/dt-bindings/pinctrl/adi-adsp.h | 21 ++++ 5 files changed, 187 insertions(+) create mode 100644 drivers/pinctrl/pinctrl-adi-adsp.c create mode 100644 include/dt-bindings/pinctrl/adi-adsp.h
diff --git a/MAINTAINERS b/MAINTAINERS index 6853288975..dabc7d0591 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -610,6 +610,7 @@ T: git https://github.com/analogdevicesinc/lnxdsp-u-boot F: arch/arm/include/asm/arch-adi/ F: arch/arm/mach-sc5xx/ F: drivers/clk/adi/ +F: drivers/pinctrl/pinctrl-adi-adsp.c F: drivers/serial/serial_adi_uart4.c F: drivers/timer/adi_sc5xx_timer.c F: include/env/adi/ diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index a1d53cfbdb..0f3fb65e4e 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -170,6 +170,14 @@ config PINCTRL_APPLE both the GPIO definitions and pin control functions for each available multiplex function.
+config PINCTRL_ADI + bool "ADI pinctrl driver" + depends on DM && (SC57X || SC58X || SC59X || SC59X_64) + help + This driver enables pinctrl support on SC5xx processors. This + driver covers only the pin configuration functionality, and + GPIO functionality is contained in the separate GPIO driver. + config PINCTRL_AR933X bool "QCA/Athores ar933x pin control driver" depends on DM && SOC_AR933X diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 6d7b7cd905..7dd56774bd 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -3,6 +3,7 @@ obj-y += pinctrl-uclass.o obj-$(CONFIG_$(SPL_)PINCTRL_GENERIC) += pinctrl-generic.o
+obj-$(CONFIG_PINCTRL_ADI) += pinctrl-adi-adsp.o obj-$(CONFIG_PINCTRL_APPLE) += pinctrl-apple.o obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o diff --git a/drivers/pinctrl/pinctrl-adi-adsp.c b/drivers/pinctrl/pinctrl-adi-adsp.c new file mode 100644 index 0000000000..717ac8e005 --- /dev/null +++ b/drivers/pinctrl/pinctrl-adi-adsp.c @@ -0,0 +1,156 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * (C) Copyright 2022 - Analog Devices, Inc. + * + * Written and/or maintained by Timesys Corporation + * + * Author: Greg Malysa greg.malysa@timesys.com + * Additional Contact: Nathan Barrett-Morrison nathan.morrison@timesys.com + * + * dm pinctrl implementation for ADI ADSP SoCs + * + */ + +#include <dm.h> +#include <dm/pinctrl.h> +#include <dm/device_compat.h> +#include <linux/bitops.h> +#include <linux/io.h> + +#define ADSP_PORT_MMIO_SIZE 0x80 +#define ADSP_PORT_PIN_SIZE 16 + +#define ADSP_PORT_PORT_MUX_BITS 2 +#define ADSP_PORT_PORT_MUX_MASK 0x03 +#define ADSP_PINCTRL_FUNCTION_COUNT 4 + +#define ADSP_PORT_REG_FER 0x00 +#define ADSP_PORT_REG_FER_SET 0x04 +#define ADSP_PORT_REG_FER_CLEAR 0x08 +#define ADSP_PORT_REG_DATA 0x0c +#define ADSP_PORT_REG_DATA_SET 0x10 +#define ADSP_PORT_REG_DATA_CLEAR 0x14 +#define ADSP_PORT_REG_DIR 0x18 +#define ADSP_PORT_REG_DIR_SET 0x1c +#define ADSP_PORT_REG_DIR_CLEAR 0x20 +#define ADSP_PORT_REG_INEN 0x24 +#define ADSP_PORT_REG_INEN_SET 0x28 +#define ADSP_PORT_REG_INEN_CLEAR 0x2c +#define ADSP_PORT_REG_PORT_MUX 0x30 +#define ADSP_PORT_REG_DATA_TGL 0x34 +#define ADSP_PORT_REG_POLAR 0x38 +#define ADSP_PORT_REG_POLAR_SET 0x3c +#define ADSP_PORT_REG_POLAR_CLEAR 0x40 +#define ADSP_PORT_REG_LOCK 0x44 +#define ADSP_PORT_REG_TRIG_TGL 0x48 + +struct adsp_pinctrl_priv { + void __iomem *base; + int npins; + char pinbuf[16]; +}; + +static u32 get_port(unsigned int pin) +{ + return pin / ADSP_PORT_PIN_SIZE; +} + +static u32 get_offset(unsigned int pin) +{ + return pin % ADSP_PORT_PIN_SIZE; +} + +static int adsp_pinctrl_pinmux_set(struct udevice *udev, unsigned int pin, unsigned int func) +{ + struct adsp_pinctrl_priv *priv = dev_get_priv(udev); + void __iomem *portbase; + u32 port, offset; + u32 val; + + if (pin >= priv->npins) + return -ENODEV; + + if (func >= ADSP_PINCTRL_FUNCTION_COUNT) + return -EINVAL; + + port = get_port(pin); + offset = get_offset(pin); + portbase = priv->base + port * ADSP_PORT_MMIO_SIZE; + + val = ioread32(portbase + ADSP_PORT_REG_PORT_MUX); + val &= ~(ADSP_PORT_PORT_MUX_MASK << (ADSP_PORT_PORT_MUX_BITS * offset)); + val |= func << (ADSP_PORT_PORT_MUX_BITS * offset); + iowrite32(val, portbase + ADSP_PORT_REG_PORT_MUX); + + iowrite32(BIT(offset), portbase + ADSP_PORT_REG_FER_SET); + return 0; +} + +static int adsp_pinctrl_set_state(struct udevice *udev, struct udevice *config) +{ + const struct fdt_property *pinlist; + int length = 0; + int ret, i; + u32 pin, function; + + pinlist = dev_read_prop(config, "adi,pins", &length); + if (!pinlist) { + dev_err(udev, "missing adi,pins property in pinctrl config node\n"); + return -EINVAL; + } + + if (length % (sizeof(uint32_t) * 2)) { + dev_err(udev, "adi,pins property must be a multiple of two uint32_ts\n"); + return -EINVAL; + } + + for (i = 0; i < length / sizeof(uint32_t); i += 2) { + ret = dev_read_u32_index(config, "adi,pins", i, &pin); + if (ret) + return ret; + + ret = dev_read_u32_index(config, "adi,pins", i + 1, &function); + if (ret) + return ret; + + ret = adsp_pinctrl_pinmux_set(udev, pin, function); + if (ret) + return ret; + } + + return 0; +} + +const struct pinctrl_ops adsp_pinctrl_ops = { + .set_state = adsp_pinctrl_set_state, +}; + +static int adsp_pinctrl_probe(struct udevice *udev) +{ + struct adsp_pinctrl_priv *priv = dev_get_priv(udev); + + priv->base = dev_read_addr_ptr(udev); + priv->npins = dev_read_u32_default(udev, "adi,npins", 0); + + if (!priv->npins) { + dev_err(udev, "Missing adi,npins property!\n"); + return -ENOENT; + } + + return 0; +} + +static const struct udevice_id adsp_pinctrl_match[] = { + { .compatible = "adi,adsp-pinctrl" }, + { }, +}; + +U_BOOT_DRIVER(adi_adsp_pinctrl) = { + .name = "adi_adsp_pinctrl", + .id = UCLASS_PINCTRL, + .of_match = adsp_pinctrl_match, + .probe = adsp_pinctrl_probe, + .priv_auto = sizeof(struct adsp_pinctrl_priv), + .ops = &adsp_pinctrl_ops, + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/include/dt-bindings/pinctrl/adi-adsp.h b/include/dt-bindings/pinctrl/adi-adsp.h new file mode 100644 index 0000000000..7dc8a1ef5c --- /dev/null +++ b/include/dt-bindings/pinctrl/adi-adsp.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * (C) Copyright 2022 - Analog Devices, Inc. + * + * Written and/or maintained by Timesys Corporation + * + * Contact: Nathan Barrett-Morrison nathan.morrison@timesys.com + * Contact: Greg Malysa greg.malysa@timesys.com + * + */ + +#ifndef DT_BINDINGS_PINCTRL_ADI_ADSP +#define DT_BINDINGS_PINCTRL_ADI_ADSP + +#define ADI_ADSP_PIN(port, pin) (16 * ((port) - 'A') + (pin)) +#define ADI_ADSP_PINFUNC_ALT0 0 +#define ADI_ADSP_PINFUNC_ALT1 1 +#define ADI_ADSP_PINFUNC_ALT2 2 +#define ADI_ADSP_PINFUNC_ALT3 3 + +#endif