| Kuan Lim Lee | ec2b8f2 | 2023-03-29 11:42:15 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Pinctrl / GPIO driver for StarFive JH7110 SoC |
| 4 | * |
| 5 | * Copyright (C) 2022 StarFive Technology Co., Ltd. |
| 6 | * Author: Lee Kuan Lim <kuanlim.lee@starfivetech.com> |
| 7 | * Author: Jianlong Huang <jianlong.huang@starfivetech.com> |
| 8 | */ |
| 9 | |
| 10 | #include <dm/read.h> |
| 11 | #include <dm/device_compat.h> |
| 12 | #include <linux/io.h> |
| 13 | |
| 14 | #include <dt-bindings/pinctrl/pinctrl-starfive-jh7110.h> |
| 15 | #include "pinctrl-starfive.h" |
| 16 | |
| 17 | #define JH7110_AON_NGPIO 4 |
| 18 | #define JH7110_AON_GC_BASE 64 |
| 19 | |
| 20 | /* registers */ |
| 21 | #define JH7110_AON_DOEN 0x0 |
| 22 | #define JH7110_AON_DOUT 0x4 |
| 23 | #define JH7110_AON_GPI 0x8 |
| 24 | #define JH7110_AON_GPIOIN 0x2c |
| 25 | |
| 26 | #define JH7110_AON_GPIOEN 0xc |
| 27 | #define JH7110_AON_GPIOIS 0x10 |
| 28 | #define JH7110_AON_GPIOIC 0x14 |
| 29 | #define JH7110_AON_GPIOIBE 0x18 |
| 30 | #define JH7110_AON_GPIOIEV 0x1c |
| 31 | #define JH7110_AON_GPIOIE 0x20 |
| 32 | #define JH7110_AON_GPIORIS 0x28 |
| 33 | #define JH7110_AON_GPIOMIS 0x28 |
| 34 | |
| 35 | #define AON_GPO_PDA_0_5_CFG 0x30 |
| 36 | |
| 37 | static int jh7110_aon_set_one_pin_mux(struct udevice *dev, unsigned int pin, |
| 38 | unsigned int din, u32 dout, |
| 39 | u32 doen, u32 func) |
| 40 | { |
| 41 | struct starfive_pinctrl_priv *priv = dev_get_priv(dev); |
| 42 | |
| 43 | if (pin < priv->info->ngpios && func == 0) |
| 44 | starfive_set_gpiomux(dev, pin, din, dout, doen); |
| 45 | |
| 46 | return 0; |
| 47 | } |
| 48 | |
| 49 | static int jh7110_aon_get_padcfg_base(struct udevice *dev, |
| 50 | unsigned int pin) |
| 51 | { |
| 52 | if (pin < PAD_GMAC0_MDC) |
| 53 | return AON_GPO_PDA_0_5_CFG; |
| 54 | |
| 55 | return -1; |
| 56 | } |
| 57 | |
| 58 | static void jh7110_aon_init_hw(struct udevice *dev) |
| 59 | { |
| 60 | struct starfive_pinctrl_priv *priv = dev_get_priv(dev); |
| 61 | |
| 62 | /* mask all GPIO interrupts */ |
| 63 | writel(0, priv->base + JH7110_AON_GPIOIE); |
| 64 | /* clear edge interrupt flags */ |
| 65 | writel(0, priv->base + JH7110_AON_GPIOIC); |
| 66 | writel(0x0f, priv->base + JH7110_AON_GPIOIC); |
| 67 | /* enable GPIO interrupts */ |
| 68 | writel(1, priv->base + JH7110_AON_GPIOEN); |
| 69 | } |
| 70 | |
| 71 | const struct starfive_pinctrl_soc_info jh7110_aon_pinctrl_info = { |
| 72 | /* pin conf */ |
| 73 | .set_one_pinmux = jh7110_aon_set_one_pin_mux, |
| 74 | .get_padcfg_base = jh7110_aon_get_padcfg_base, |
| 75 | |
| 76 | /* gpio dout/doen/din/gpioinput register */ |
| 77 | .dout_reg_base = JH7110_AON_DOUT, |
| 78 | .dout_mask = GENMASK(3, 0), |
| 79 | .doen_reg_base = JH7110_AON_DOEN, |
| 80 | .doen_mask = GENMASK(2, 0), |
| 81 | .gpi_reg_base = JH7110_AON_GPI, |
| 82 | .gpi_mask = GENMASK(3, 0), |
| 83 | .gpioin_reg_base = JH7110_AON_GPIOIN, |
| 84 | |
| 85 | /* gpio */ |
| 86 | .gpio_bank_name = "RGPIO", |
| 87 | .ngpios = JH7110_AON_NGPIO, |
| 88 | .gpio_init_hw = jh7110_aon_init_hw, |
| 89 | }; |
| 90 | |
| 91 | static int jh7110_aon_pinctrl_probe(struct udevice *dev) |
| 92 | { |
| 93 | struct starfive_pinctrl_soc_info *info = |
| 94 | (struct starfive_pinctrl_soc_info *)dev_get_driver_data(dev); |
| 95 | |
| 96 | return starfive_pinctrl_probe(dev, info); |
| 97 | } |
| 98 | |
| 99 | static const struct udevice_id jh7110_aon_pinctrl_ids[] = { |
| 100 | /* JH7110 aon pinctrl */ |
| 101 | { .compatible = "starfive,jh7110-aon-pinctrl", |
| 102 | .data = (ulong)&jh7110_aon_pinctrl_info, }, |
| 103 | { /* sentinel */ } |
| 104 | }; |
| 105 | |
| 106 | U_BOOT_DRIVER(jh7110_aon_pinctrl) = { |
| 107 | .name = "jh7110-aon-pinctrl", |
| 108 | .id = UCLASS_PINCTRL, |
| 109 | .of_match = jh7110_aon_pinctrl_ids, |
| 110 | .priv_auto = sizeof(struct starfive_pinctrl_priv), |
| 111 | .ops = &starfive_pinctrl_ops, |
| 112 | .probe = jh7110_aon_pinctrl_probe, |
| 113 | }; |