diff options
Diffstat (limited to 'drivers/pinctrl/starfive/pinctrl-jh7110-aon.c')
-rw-r--r-- | drivers/pinctrl/starfive/pinctrl-jh7110-aon.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/pinctrl/starfive/pinctrl-jh7110-aon.c b/drivers/pinctrl/starfive/pinctrl-jh7110-aon.c new file mode 100644 index 0000000000..2d739906e2 --- /dev/null +++ b/drivers/pinctrl/starfive/pinctrl-jh7110-aon.c @@ -0,0 +1,113 @@ +// 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, +}; |