[U-Boot] [PATCH v3] pinctrl: mscc: Add gpio and pinctrl driver for MSCC MIPS SoCs (VcoreIII based)
Daniel Schwierzeck
daniel.schwierzeck at gmail.com
Mon Dec 10 17:45:03 UTC 2018
Am 08.12.18 um 09:59 schrieb Gregory CLEMENT:
> This driver supports the pin and gpio controller found in the Ocelot and
> Luton SoCs.
>
> The driver was inspired from the pinctrl driver in Linux, but was
> simplified and was modified to allow supporting an other SoCs (Luton).
>
> For Ocelot and Luton the controller is the same, only the pins to program
> differ.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement at bootlin.com>
> ---
> Hi,
>
> I sent the second version _2_ months ago and did not get
> anyfeedback. I hope this patch could be merge soon.
>
> Thanks!
>
> Changelog:
> v2 -> v3:
> - fix the return value of mscc_gpio_get_direction (reported by Lars
> Povlsen)
>
> v1 -> v2:
> - use clrbits and setbits from MIPS
> - use const and static when needed
> - fix style
> - use dev_remap_addr
>
> drivers/pinctrl/Kconfig | 1 +
> drivers/pinctrl/Makefile | 1 +
> drivers/pinctrl/mscc/Kconfig | 22 +++
> drivers/pinctrl/mscc/Makefile | 5 +
> drivers/pinctrl/mscc/mscc-common.c | 236 ++++++++++++++++++++++++++
> drivers/pinctrl/mscc/mscc-common.h | 51 ++++++
> drivers/pinctrl/mscc/pinctrl-luton.c | 172 +++++++++++++++++++
> drivers/pinctrl/mscc/pinctrl-ocelot.c | 188 ++++++++++++++++++++
> 8 files changed, 676 insertions(+)
> create mode 100644 drivers/pinctrl/mscc/Kconfig
> create mode 100644 drivers/pinctrl/mscc/Makefile
> create mode 100644 drivers/pinctrl/mscc/mscc-common.c
> create mode 100644 drivers/pinctrl/mscc/mscc-common.h
> create mode 100644 drivers/pinctrl/mscc/pinctrl-luton.c
> create mode 100644 drivers/pinctrl/mscc/pinctrl-ocelot.c
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>
one nit below, but I can fix it when applying
>
> diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
> index ad0b8daba6..cc82f91579 100644
> --- a/drivers/pinctrl/Kconfig
> +++ b/drivers/pinctrl/Kconfig
> @@ -305,6 +305,7 @@ source "drivers/pinctrl/nxp/Kconfig"
> source "drivers/pinctrl/renesas/Kconfig"
> source "drivers/pinctrl/uniphier/Kconfig"
> source "drivers/pinctrl/exynos/Kconfig"
> +source "drivers/pinctrl/mscc/Kconfig"
> source "drivers/pinctrl/mvebu/Kconfig"
> source "drivers/pinctrl/broadcom/Kconfig"
>
> diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
> index a3a6c6d163..2461dba293 100644
> --- a/drivers/pinctrl/Makefile
> +++ b/drivers/pinctrl/Makefile
> @@ -16,6 +16,7 @@ obj-$(CONFIG_PINCTRL_UNIPHIER) += uniphier/
> obj-$(CONFIG_PINCTRL_PIC32) += pinctrl_pic32.o
> obj-$(CONFIG_PINCTRL_EXYNOS) += exynos/
> obj-$(CONFIG_PINCTRL_MESON) += meson/
> +obj-y += mscc/
> obj-$(CONFIG_ARCH_MVEBU) += mvebu/
> obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
> obj-$(CONFIG_PINCTRL_STI) += pinctrl-sti.o
> diff --git a/drivers/pinctrl/mscc/Kconfig b/drivers/pinctrl/mscc/Kconfig
> new file mode 100644
> index 0000000000..cfc6c06076
> --- /dev/null
> +++ b/drivers/pinctrl/mscc/Kconfig
> @@ -0,0 +1,22 @@
> +# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +config PINCTRL_MSCC
> + bool
> +
> +config PINCTRL_MSCC_OCELOT
> + depends on SOC_OCELOT && PINCTRL_FULL && OF_CONTROL
> + select PINCTRL_MSCC
> + default y
> + bool "Microsemi ocelot family pin control driver"
> + help
> + Support pin multiplexing and pin configuration control on
> + Microsemi ocelot SoCs.
> +
> +config PINCTRL_MSCC_LUTON
> + depends on SOC_LUTON && PINCTRL_FULL && OF_CONTROL
> + select PINCTRL_MSCC
> + default y
> + bool "Microsemi luton family pin control driver"
> + help
> + Support pin multiplexing and pin configuration control on
> + Microsemi luton SoCs.
> diff --git a/drivers/pinctrl/mscc/Makefile b/drivers/pinctrl/mscc/Makefile
> new file mode 100644
> index 0000000000..941f418ff9
> --- /dev/null
> +++ b/drivers/pinctrl/mscc/Makefile
> @@ -0,0 +1,5 @@
> +# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +
> +obj-$(CONFIG_PINCTRL_MSCC) += mscc-common.o
> +obj-$(CONFIG_PINCTRL_MSCC_OCELOT) += pinctrl-ocelot.o
> +obj-$(CONFIG_PINCTRL_MSCC_LUTON) += pinctrl-luton.o
> diff --git a/drivers/pinctrl/mscc/mscc-common.c b/drivers/pinctrl/mscc/mscc-common.c
> new file mode 100644
> index 0000000000..d74b8a6649
> --- /dev/null
> +++ b/drivers/pinctrl/mscc/mscc-common.c
> @@ -0,0 +1,236 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Microsemi SoCs pinctrl driver
> + *
> + * Author: <alexandre.belloni at free-electrons.com>
> + * Author: <gregory.clement at bootlin.com>
> + * License: Dual MIT/GPL
> + * Copyright (c) 2017 Microsemi Corporation
> + */
> +
> +#include <asm/gpio.h>
> +#include <asm/system.h>
> +#include <common.h>
> +#include <config.h>
> +#include <dm.h>
> +#include <dm/device-internal.h>
> +#include <dm/lists.h>
> +#include <dm/pinctrl.h>
> +#include <dm/root.h>
> +#include <errno.h>
> +#include <fdtdec.h>
> +#include <linux/io.h>
> +#include "mscc-common.h"
> +
> +#define MSCC_GPIO_OUT_SET 0x0
> +#define MSCC_GPIO_OUT_CLR 0x4
> +#define MSCC_GPIO_OUT 0x8
> +#define MSCC_GPIO_IN 0xc
> +#define MSCC_GPIO_OE 0x10
> +#define MSCC_GPIO_INTR 0x14
> +#define MSCC_GPIO_INTR_ENA 0x18
> +#define MSCC_GPIO_INTR_IDENT 0x1c
> +#define MSCC_GPIO_ALT0 0x20
> +#define MSCC_GPIO_ALT1 0x24
> +
> +static int mscc_get_functions_count(struct udevice *dev)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev);
> +
> + return info->num_func;
> +}
> +
> +static const char *mscc_get_function_name(struct udevice *dev,
> + unsigned int function)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev);
> +
> + return info->function_names[function];
> +}
> +
> +static int mscc_pin_function_idx(unsigned int pin, unsigned int function,
> + const struct mscc_pin_data *mscc_pins)
> +{
> + struct mscc_pin_caps *p = mscc_pins[pin].drv_data;
> + int i;
> +
> + for (i = 0; i < MSCC_FUNC_PER_PIN; i++) {
> + if (function == p->functions[i])
> + return i;
> + }
> +
> + return -1;
> +}
> +
> +static int mscc_pinmux_set_mux(struct udevice *dev,
> + unsigned int pin_selector, unsigned int selector)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev);
> + struct mscc_pin_caps *pin = info->mscc_pins[pin_selector].drv_data;
> + int f;
> +
> + f = mscc_pin_function_idx(pin_selector, selector, info->mscc_pins);
> + if (f < 0)
> + return -EINVAL;
> + /*
> + * f is encoded on two bits.
> + * bit 0 of f goes in BIT(pin) of ALT0, bit 1 of f goes in BIT(pin) of
> + * ALT1
> + * This is racy because both registers can't be updated at the same time
> + * but it doesn't matter much for now.
> + */
> + if (f & BIT(0))
> + setbits_le32(info->regs + MSCC_GPIO_ALT0, BIT(pin->pin));
> + else
> + clrbits_le32(info->regs + MSCC_GPIO_ALT0, BIT(pin->pin));
> +
> + if (f & BIT(1))
> + setbits_le32(info->regs + MSCC_GPIO_ALT1, BIT(pin->pin - 1));
> + else
> + clrbits_le32(info->regs + MSCC_GPIO_ALT1, BIT(pin->pin - 1));
> +
> + return 0;
> +}
> +
> +static int mscc_pctl_get_groups_count(struct udevice *dev)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev);
> +
> + return info->num_pins;
> +}
> +
> +static const char *mscc_pctl_get_group_name(struct udevice *dev,
> + unsigned int group)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev);
> +
> + return info->mscc_pins[group].name;
> +}
> +
> +static int mscc_create_group_func_map(struct udevice *dev,
> + struct mscc_pinctrl *info)
> +{
> + u16 pins[info->num_pins];
> + int f, npins, i;
> +
> + for (f = 0; f < info->num_func; f++) {
> + for (npins = 0, i = 0; i < info->num_pins; i++) {
> + if (mscc_pin_function_idx(i, f, info->mscc_pins) >= 0)
> + pins[npins++] = i;
> + }
> +
> + info->func[f].ngroups = npins;
> + info->func[f].groups = devm_kzalloc(dev, npins *
> + sizeof(char *), GFP_KERNEL);
> + if (!info->func[f].groups)
> + return -ENOMEM;
> +
> + for (i = 0; i < npins; i++)
> + info->func[f].groups[i] = info->mscc_pins[pins[i]].name;
> + }
> +
> + return 0;
> +}
> +
> +static int mscc_pinctrl_register(struct udevice *dev, struct mscc_pinctrl *info)
> +{
> + int ret;
> +
> + ret = mscc_create_group_func_map(dev, info);
> + if (ret) {
> + dev_err(dev, "Unable to create group func map.\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int mscc_gpio_get(struct udevice *dev, unsigned int offset)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev->parent);
> + unsigned int val;
> +
> + val = readl(info->regs + MSCC_GPIO_IN);
> +
> + return !!(val & BIT(offset));
> +}
> +
> +static int mscc_gpio_set(struct udevice *dev, unsigned int offset, int value)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev->parent);
> +
> + if (value)
> + writel(BIT(offset), info->regs + MSCC_GPIO_OUT_SET);
> + else
> + writel(BIT(offset), info->regs + MSCC_GPIO_OUT_CLR);
> +
> + return 0;
> +}
> +
> +static int mscc_gpio_get_direction(struct udevice *dev, unsigned int offset)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev->parent);
> + unsigned int val;
> +
> + val = readl(info->regs + MSCC_GPIO_OE);
> +
> + return (val & BIT(offset)) ? GPIOF_OUTPUT : GPIOF_INPUT;
> +}
> +
> +static int mscc_gpio_direction_input(struct udevice *dev, unsigned int offset)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev->parent);
> +
> + clrbits_le32(info->regs + MSCC_GPIO_OE, BIT(offset));
> +
> + return 0;
> +}
> +
> +static int mscc_gpio_direction_output(struct udevice *dev,
> + unsigned int offset, int value)
> +{
> + struct mscc_pinctrl *info = dev_get_priv(dev->parent);
> +
> + setbits_le32(info->regs + MSCC_GPIO_OE, BIT(offset));
> +
> + return mscc_gpio_set(dev, offset, value);
> +}
> +
> +const struct dm_gpio_ops mscc_gpio_ops = {
> + .set_value = mscc_gpio_set,
> + .get_value = mscc_gpio_get,
> + .get_function = mscc_gpio_get_direction,
> + .direction_input = mscc_gpio_direction_input,
> + .direction_output = mscc_gpio_direction_output,
> +};
> +
> +const struct pinctrl_ops mscc_pinctrl_ops = {
> + .get_pins_count = mscc_pctl_get_groups_count,
> + .get_pin_name = mscc_pctl_get_group_name,
> + .get_functions_count = mscc_get_functions_count,
> + .get_function_name = mscc_get_function_name,
> + .pinmux_set = mscc_pinmux_set_mux,
> + .set_state = pinctrl_generic_set_state,
> +};
> +
> +int mscc_pinctrl_probe(struct udevice *dev, int num_func,
> + const struct mscc_pin_data *mscc_pins, int num_pins,
> + char *const *function_names)
> +{
> + struct mscc_pinctrl *priv = dev_get_priv(dev);
> + int ret;
> +
> + priv->regs = dev_remap_addr(dev);
> + if (!priv->regs)
> + return -EINVAL;
> +
> + priv->func = devm_kzalloc(dev, num_func * sizeof(struct mscc_pmx_func),
> + GFP_KERNEL);
> + priv->num_func = num_func;
> + priv->mscc_pins = mscc_pins;
> + priv->num_pins = num_pins;
> + priv->function_names = function_names;
> + ret = mscc_pinctrl_register(dev, priv);
> +
> + return ret;
> +}
> diff --git a/drivers/pinctrl/mscc/mscc-common.h b/drivers/pinctrl/mscc/mscc-common.h
> new file mode 100644
> index 0000000000..b0001db44c
> --- /dev/null
> +++ b/drivers/pinctrl/mscc/mscc-common.h
> @@ -0,0 +1,51 @@
> +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
line should begin with a //
> +/*
> + * Microsemi SoCs pinctrl driver
> + *
> + * Author: <alexandre.belloni at free-electrons.com>
> + * License: Dual MIT/GPL
> + * Copyright (c) 2017 Microsemi Corporation
> + */
> +
> +#define MSCC_FUNC_PER_PIN 4
> +
> +struct mscc_pin_caps {
> + unsigned int pin;
> + unsigned char functions[MSCC_FUNC_PER_PIN];
> +};
> +
> +struct mscc_pin_data {
> + const char *name;
> + struct mscc_pin_caps *drv_data;
> +};
> +
> +#define MSCC_P(p, f0, f1, f2) \
> +static struct mscc_pin_caps mscc_pin_##p = { \
> + .pin = p, \
> + .functions = { \
> + FUNC_GPIO, FUNC_##f0, FUNC_##f1, FUNC_##f2, \
> + }, \
> +}
> +
> +struct mscc_pmx_func {
> + const char **groups;
> + unsigned int ngroups;
> +};
> +
> +struct mscc_pinctrl {
> + struct udevice *dev;
> + struct pinctrl_dev *pctl;
> + void __iomem *regs;
> + struct mscc_pmx_func *func;
> + int num_func;
> + const struct mscc_pin_data *mscc_pins;
> + int num_pins;
> + char * const *function_names;
> +};
> +
> +int mscc_pinctrl_probe(struct udevice *dev, int num_func,
> + const struct mscc_pin_data *mscc_pins, int num_pins,
> + char * const *function_names);
> +const struct pinctrl_ops mscc_pinctrl_ops;
> +
> +const struct dm_gpio_ops mscc_gpio_ops;
> diff --git a/drivers/pinctrl/mscc/pinctrl-luton.c b/drivers/pinctrl/mscc/pinctrl-luton.c
> new file mode 100644
> index 0000000000..7166588e3c
> --- /dev/null
> +++ b/drivers/pinctrl/mscc/pinctrl-luton.c
> @@ -0,0 +1,172 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Microsemi SoCs pinctrl driver
> + *
> + * Author: <gregory.clement at bootlin.com>
> + * License: Dual MIT/GPL
> + * Copyright (c) 2018 Microsemi Corporation
> + */
> +
> +#include <common.h>
> +#include <config.h>
> +#include <dm.h>
> +#include <dm/device-internal.h>
> +#include <dm/lists.h>
> +#include <dm/pinctrl.h>
> +#include <dm/root.h>
> +#include <errno.h>
> +#include <fdtdec.h>
> +#include <linux/io.h>
> +#include <asm/gpio.h>
> +#include <asm/system.h>
> +#include "mscc-common.h"
> +
> +enum {
> + FUNC_NONE,
> + FUNC_GPIO,
> + FUNC_SIO,
> + FUNC_TACHO,
> + FUNC_TWI,
> + FUNC_PHY_LED,
> + FUNC_EXT_IRQ,
> + FUNC_SFP,
> + FUNC_SI,
> + FUNC_PWM,
> + FUNC_UART,
> + FUNC_MAX
> +};
> +
> +static char * const luton_function_names[] = {
> + [FUNC_NONE] = "none",
> + [FUNC_GPIO] = "gpio",
> + [FUNC_SIO] = "sio",
> + [FUNC_TACHO] = "tacho",
> + [FUNC_TWI] = "twi",
> + [FUNC_PHY_LED] = "phy_led",
> + [FUNC_EXT_IRQ] = "ext_irq",
> + [FUNC_SFP] = "sfp",
> + [FUNC_SI] = "si",
> + [FUNC_PWM] = "pwm",
> + [FUNC_UART] = "uart",
> +};
> +
> +MSCC_P(0, SIO, NONE, NONE);
> +MSCC_P(1, SIO, NONE, NONE);
> +MSCC_P(2, SIO, NONE, NONE);
> +MSCC_P(3, SIO, NONE, NONE);
> +MSCC_P(4, TACHO, NONE, NONE);
> +MSCC_P(5, TWI, PHY_LED, NONE);
> +MSCC_P(6, TWI, PHY_LED, NONE);
> +MSCC_P(7, NONE, PHY_LED, NONE);
> +MSCC_P(8, EXT_IRQ, PHY_LED, NONE);
> +MSCC_P(9, EXT_IRQ, PHY_LED, NONE);
> +MSCC_P(10, SFP, PHY_LED, NONE);
> +MSCC_P(11, SFP, PHY_LED, NONE);
> +MSCC_P(12, SFP, PHY_LED, NONE);
> +MSCC_P(13, SFP, PHY_LED, NONE);
> +MSCC_P(14, SI, PHY_LED, NONE);
> +MSCC_P(15, SI, PHY_LED, NONE);
> +MSCC_P(16, SI, PHY_LED, NONE);
> +MSCC_P(17, SFP, PHY_LED, NONE);
> +MSCC_P(18, SFP, PHY_LED, NONE);
> +MSCC_P(19, SFP, PHY_LED, NONE);
> +MSCC_P(20, SFP, PHY_LED, NONE);
> +MSCC_P(21, SFP, PHY_LED, NONE);
> +MSCC_P(22, SFP, PHY_LED, NONE);
> +MSCC_P(23, SFP, PHY_LED, NONE);
> +MSCC_P(24, SFP, PHY_LED, NONE);
> +MSCC_P(25, SFP, PHY_LED, NONE);
> +MSCC_P(26, SFP, PHY_LED, NONE);
> +MSCC_P(27, SFP, PHY_LED, NONE);
> +MSCC_P(28, SFP, PHY_LED, NONE);
> +MSCC_P(29, PWM, NONE, NONE);
> +MSCC_P(30, UART, NONE, NONE);
> +MSCC_P(31, UART, NONE, NONE);
> +
> +#define LUTON_PIN(n) { \
> + .name = "GPIO_"#n, \
> + .drv_data = &mscc_pin_##n \
> +}
> +
> +static const struct mscc_pin_data luton_pins[] = {
> + LUTON_PIN(0),
> + LUTON_PIN(1),
> + LUTON_PIN(2),
> + LUTON_PIN(3),
> + LUTON_PIN(4),
> + LUTON_PIN(5),
> + LUTON_PIN(6),
> + LUTON_PIN(7),
> + LUTON_PIN(8),
> + LUTON_PIN(9),
> + LUTON_PIN(10),
> + LUTON_PIN(11),
> + LUTON_PIN(12),
> + LUTON_PIN(13),
> + LUTON_PIN(14),
> + LUTON_PIN(15),
> + LUTON_PIN(16),
> + LUTON_PIN(17),
> + LUTON_PIN(18),
> + LUTON_PIN(19),
> + LUTON_PIN(20),
> + LUTON_PIN(21),
> + LUTON_PIN(22),
> + LUTON_PIN(23),
> + LUTON_PIN(24),
> + LUTON_PIN(25),
> + LUTON_PIN(26),
> + LUTON_PIN(27),
> + LUTON_PIN(28),
> + LUTON_PIN(29),
> + LUTON_PIN(30),
> + LUTON_PIN(31),
> +};
> +
> +static int luton_gpio_probe(struct udevice *dev)
> +{
> + struct gpio_dev_priv *uc_priv;
> +
> + uc_priv = dev_get_uclass_priv(dev);
> + uc_priv->bank_name = "luton-gpio";
> + uc_priv->gpio_count = ARRAY_SIZE(luton_pins);
> +
> + return 0;
> +}
> +
> +static struct driver luton_gpio_driver = {
> + .name = "luton-gpio",
> + .id = UCLASS_GPIO,
> + .probe = luton_gpio_probe,
> + .ops = &mscc_gpio_ops,
> +};
> +
> +int luton_pinctrl_probe(struct udevice *dev)
> +{
> + int ret;
> +
> + ret = mscc_pinctrl_probe(dev, FUNC_MAX, luton_pins,
> + ARRAY_SIZE(luton_pins), luton_function_names);
> +
> + if (ret)
> + return ret;
> +
> + ret = device_bind(dev, &luton_gpio_driver, "luton-gpio", NULL,
> + dev_of_offset(dev), NULL);
> +
> + return 0;
> +}
> +
> +static const struct udevice_id luton_pinctrl_of_match[] = {
> + {.compatible = "mscc,luton-pinctrl"},
> + {},
> +};
> +
> +U_BOOT_DRIVER(luton_pinctrl) = {
> + .name = "luton-pinctrl",
> + .id = UCLASS_PINCTRL,
> + .of_match = of_match_ptr(luton_pinctrl_of_match),
> + .probe = luton_pinctrl_probe,
> + .priv_auto_alloc_size = sizeof(struct mscc_pinctrl),
> + .ops = &mscc_pinctrl_ops,
> +};
> diff --git a/drivers/pinctrl/mscc/pinctrl-ocelot.c b/drivers/pinctrl/mscc/pinctrl-ocelot.c
> new file mode 100644
> index 0000000000..10f9b90aad
> --- /dev/null
> +++ b/drivers/pinctrl/mscc/pinctrl-ocelot.c
> @@ -0,0 +1,188 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Microsemi SoCs pinctrl driver
> + *
> + * Author: <alexandre.belloni at free-electrons.com>
> + * Author: <gregory.clement at bootlin.com>
> + * License: Dual MIT/GPL
> + * Copyright (c) 2017 Microsemi Corporation
> + */
> +
> +#include <asm/gpio.h>
> +#include <asm/system.h>
> +#include <common.h>
> +#include <config.h>
> +#include <dm.h>
> +#include <dm/device-internal.h>
> +#include <dm/lists.h>
> +#include <dm/pinctrl.h>
> +#include <dm/root.h>
> +#include <errno.h>
> +#include <fdtdec.h>
> +#include <linux/io.h>
> +#include "mscc-common.h"
> +
> +enum {
> + FUNC_NONE,
> + FUNC_GPIO,
> + FUNC_IRQ0_IN,
> + FUNC_IRQ0_OUT,
> + FUNC_IRQ1_IN,
> + FUNC_IRQ1_OUT,
> + FUNC_MIIM1,
> + FUNC_PCI_WAKE,
> + FUNC_PTP0,
> + FUNC_PTP1,
> + FUNC_PTP2,
> + FUNC_PTP3,
> + FUNC_PWM,
> + FUNC_RECO_CLK0,
> + FUNC_RECO_CLK1,
> + FUNC_SFP0,
> + FUNC_SFP1,
> + FUNC_SFP2,
> + FUNC_SFP3,
> + FUNC_SFP4,
> + FUNC_SFP5,
> + FUNC_SG0,
> + FUNC_SI,
> + FUNC_TACHO,
> + FUNC_TWI,
> + FUNC_TWI_SCL_M,
> + FUNC_UART,
> + FUNC_UART2,
> + FUNC_MAX
> +};
> +
> +static char * const ocelot_function_names[] = {
> + [FUNC_NONE] = "none",
> + [FUNC_GPIO] = "gpio",
> + [FUNC_IRQ0_IN] = "irq0_in",
> + [FUNC_IRQ0_OUT] = "irq0_out",
> + [FUNC_IRQ1_IN] = "irq1_in",
> + [FUNC_IRQ1_OUT] = "irq1_out",
> + [FUNC_MIIM1] = "miim1",
> + [FUNC_PCI_WAKE] = "pci_wake",
> + [FUNC_PTP0] = "ptp0",
> + [FUNC_PTP1] = "ptp1",
> + [FUNC_PTP2] = "ptp2",
> + [FUNC_PTP3] = "ptp3",
> + [FUNC_PWM] = "pwm",
> + [FUNC_RECO_CLK0] = "reco_clk0",
> + [FUNC_RECO_CLK1] = "reco_clk1",
> + [FUNC_SFP0] = "sfp0",
> + [FUNC_SFP1] = "sfp1",
> + [FUNC_SFP2] = "sfp2",
> + [FUNC_SFP3] = "sfp3",
> + [FUNC_SFP4] = "sfp4",
> + [FUNC_SFP5] = "sfp5",
> + [FUNC_SG0] = "sg0",
> + [FUNC_SI] = "si",
> + [FUNC_TACHO] = "tacho",
> + [FUNC_TWI] = "twi",
> + [FUNC_TWI_SCL_M] = "twi_scl_m",
> + [FUNC_UART] = "uart",
> + [FUNC_UART2] = "uart2",
> +};
> +
> +MSCC_P(0, SG0, NONE, NONE);
> +MSCC_P(1, SG0, NONE, NONE);
> +MSCC_P(2, SG0, NONE, NONE);
> +MSCC_P(3, SG0, NONE, NONE);
> +MSCC_P(4, IRQ0_IN, IRQ0_OUT, TWI);
> +MSCC_P(5, IRQ1_IN, IRQ1_OUT, PCI_WAKE);
> +MSCC_P(6, UART, TWI_SCL_M, NONE);
> +MSCC_P(7, UART, TWI_SCL_M, NONE);
> +MSCC_P(8, SI, TWI_SCL_M, IRQ0_OUT);
> +MSCC_P(9, SI, TWI_SCL_M, IRQ1_OUT);
> +MSCC_P(10, PTP2, TWI_SCL_M, SFP0);
> +MSCC_P(11, PTP3, TWI_SCL_M, SFP1);
> +MSCC_P(12, UART2, TWI_SCL_M, SFP2);
> +MSCC_P(13, UART2, TWI_SCL_M, SFP3);
> +MSCC_P(14, MIIM1, TWI_SCL_M, SFP4);
> +MSCC_P(15, MIIM1, TWI_SCL_M, SFP5);
> +MSCC_P(16, TWI, NONE, SI);
> +MSCC_P(17, TWI, TWI_SCL_M, SI);
> +MSCC_P(18, PTP0, TWI_SCL_M, NONE);
> +MSCC_P(19, PTP1, TWI_SCL_M, NONE);
> +MSCC_P(20, RECO_CLK0, TACHO, NONE);
> +MSCC_P(21, RECO_CLK1, PWM, NONE);
> +
> +#define OCELOT_PIN(n) { \
> + .name = "GPIO_"#n, \
> + .drv_data = &mscc_pin_##n \
> +}
> +
> +static const struct mscc_pin_data ocelot_pins[] = {
> + OCELOT_PIN(0),
> + OCELOT_PIN(1),
> + OCELOT_PIN(2),
> + OCELOT_PIN(3),
> + OCELOT_PIN(4),
> + OCELOT_PIN(5),
> + OCELOT_PIN(6),
> + OCELOT_PIN(7),
> + OCELOT_PIN(8),
> + OCELOT_PIN(9),
> + OCELOT_PIN(10),
> + OCELOT_PIN(11),
> + OCELOT_PIN(12),
> + OCELOT_PIN(13),
> + OCELOT_PIN(14),
> + OCELOT_PIN(15),
> + OCELOT_PIN(16),
> + OCELOT_PIN(17),
> + OCELOT_PIN(18),
> + OCELOT_PIN(19),
> + OCELOT_PIN(20),
> + OCELOT_PIN(21),
> +};
> +
> +static int ocelot_gpio_probe(struct udevice *dev)
> +{
> + struct gpio_dev_priv *uc_priv;
> +
> + uc_priv = dev_get_uclass_priv(dev);
> + uc_priv->bank_name = "ocelot-gpio";
> + uc_priv->gpio_count = ARRAY_SIZE(ocelot_pins);
> +
> + return 0;
> +}
> +
> +static struct driver ocelot_gpio_driver = {
> + .name = "ocelot-gpio",
> + .id = UCLASS_GPIO,
> + .probe = ocelot_gpio_probe,
> + .ops = &mscc_gpio_ops,
> +};
> +
> +int ocelot_pinctrl_probe(struct udevice *dev)
> +{
> + int ret;
> +
> + ret = mscc_pinctrl_probe(dev, FUNC_MAX, ocelot_pins,
> + ARRAY_SIZE(ocelot_pins),
> + ocelot_function_names);
> +
> + if (ret)
> + return ret;
> +
> + ret = device_bind(dev, &ocelot_gpio_driver, "ocelot-gpio", NULL,
> + dev_of_offset(dev), NULL);
> +
> + return ret;
> +}
> +
> +static const struct udevice_id ocelot_pinctrl_of_match[] = {
> + {.compatible = "mscc,ocelot-pinctrl"},
> + {},
> +};
> +
> +U_BOOT_DRIVER(ocelot_pinctrl) = {
> + .name = "ocelot-pinctrl",
> + .id = UCLASS_PINCTRL,
> + .of_match = of_match_ptr(ocelot_pinctrl_of_match),
> + .probe = ocelot_pinctrl_probe,
> + .priv_auto_alloc_size = sizeof(struct mscc_pinctrl),
> + .ops = &mscc_pinctrl_ops,
> +};
>
--
- Daniel
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