pinctrl-ocelot.c
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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/*
* Microsemi SoCs pinctrl driver
*
* Author: <alexandre.belloni@free-electrons.com>
* Author: <gregory.clement@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 const unsigned long ocelot_gpios[] = {
[MSCC_GPIO_OUT_SET] = 0x00,
[MSCC_GPIO_OUT_CLR] = 0x04,
[MSCC_GPIO_OUT] = 0x08,
[MSCC_GPIO_IN] = 0x0c,
[MSCC_GPIO_OE] = 0x10,
[MSCC_GPIO_INTR] = 0x14,
[MSCC_GPIO_INTR_ENA] = 0x18,
[MSCC_GPIO_INTR_IDENT] = 0x1c,
[MSCC_GPIO_ALT0] = 0x20,
[MSCC_GPIO_ALT1] = 0x24,
};
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,
ocelot_gpios);
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,
};