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// SPDX-License-Identifier: GPL-2.0
/*
* Pinctrl / GPIO driver for StarFive JH7110 SoC
*
* Copyright (C) 2022 StarFive Technology Co., Ltd.
* Author: Lee Kuan Lim <kuanlim.lee@starfivetech.com>
* Author: Jianlong Huang <jianlong.huang@starfivetech.com>
*/
#include <dm/read.h>
#include <dm/device_compat.h>
#include <linux/io.h>
#include <dt-bindings/pinctrl/pinctrl-starfive-jh7110.h>
#include "pinctrl-starfive.h"
#define JH7110_AON_NGPIO 4
#define JH7110_AON_GC_BASE 64
/* registers */
#define JH7110_AON_DOEN 0x0
#define JH7110_AON_DOUT 0x4
#define JH7110_AON_GPI 0x8
#define JH7110_AON_GPIOIN 0x2c
#define JH7110_AON_GPIOEN 0xc
#define JH7110_AON_GPIOIS 0x10
#define JH7110_AON_GPIOIC 0x14
#define JH7110_AON_GPIOIBE 0x18
#define JH7110_AON_GPIOIEV 0x1c
#define JH7110_AON_GPIOIE 0x20
#define JH7110_AON_GPIORIS 0x28
#define JH7110_AON_GPIOMIS 0x28
#define AON_GPO_PDA_0_5_CFG 0x30
static int jh7110_aon_set_one_pin_mux(struct udevice *dev, unsigned int pin,
unsigned int din, u32 dout,
u32 doen, u32 func)
{
struct starfive_pinctrl_priv *priv = dev_get_priv(dev);
if (pin < priv->info->ngpios && func == 0)
starfive_set_gpiomux(dev, pin, din, dout, doen);
return 0;
}
static int jh7110_aon_get_padcfg_base(struct udevice *dev,
unsigned int pin)
{
if (pin < PAD_GMAC0_MDC)
return AON_GPO_PDA_0_5_CFG;
return -1;
}
static void jh7110_aon_init_hw(struct udevice *dev)
{
struct starfive_pinctrl_priv *priv = dev_get_priv(dev);
/* mask all GPIO interrupts */
writel(0, priv->base + JH7110_AON_GPIOIE);
/* clear edge interrupt flags */
writel(0, priv->base + JH7110_AON_GPIOIC);
writel(0x0f, priv->base + JH7110_AON_GPIOIC);
/* enable GPIO interrupts */
writel(1, priv->base + JH7110_AON_GPIOEN);
}
const struct starfive_pinctrl_soc_info jh7110_aon_pinctrl_info = {
/* pin conf */
.set_one_pinmux = jh7110_aon_set_one_pin_mux,
.get_padcfg_base = jh7110_aon_get_padcfg_base,
/* gpio dout/doen/din/gpioinput register */
.dout_reg_base = JH7110_AON_DOUT,
.dout_mask = GENMASK(3, 0),
.doen_reg_base = JH7110_AON_DOEN,
.doen_mask = GENMASK(2, 0),
.gpi_reg_base = JH7110_AON_GPI,
.gpi_mask = GENMASK(3, 0),
.gpioin_reg_base = JH7110_AON_GPIOIN,
/* gpio */
.gpio_bank_name = "RGPIO",
.ngpios = JH7110_AON_NGPIO,
.gpio_init_hw = jh7110_aon_init_hw,
};
static int jh7110_aon_pinctrl_probe(struct udevice *dev)
{
struct starfive_pinctrl_soc_info *info =
(struct starfive_pinctrl_soc_info *)dev_get_driver_data(dev);
return starfive_pinctrl_probe(dev, info);
}
static const struct udevice_id jh7110_aon_pinctrl_ids[] = {
/* JH7110 aon pinctrl */
{ .compatible = "starfive,jh7110-aon-pinctrl",
.data = (ulong)&jh7110_aon_pinctrl_info, },
{ /* sentinel */ }
};
U_BOOT_DRIVER(jh7110_aon_pinctrl) = {
.name = "jh7110-aon-pinctrl",
.id = UCLASS_PINCTRL,
.of_match = jh7110_aon_pinctrl_ids,
.priv_auto = sizeof(struct starfive_pinctrl_priv),
.ops = &starfive_pinctrl_ops,
.probe = jh7110_aon_pinctrl_probe,
};
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