| // SPDX-License-Identifier: GPL-2.0 |
| // |
| // Copyright (C) 2016 Freescale Semiconductor, Inc. |
| // Copyright (C) 2017 NXP |
| // |
| // Author: Dong Aisheng <aisheng.dong@nxp.com> |
| |
| #include <linux/err.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/pinctrl/pinctrl.h> |
| |
| #include "pinctrl-imx.h" |
| |
| enum imx7ulp_pads { |
| IMX7ULP_PAD_PTC0 = 0, |
| IMX7ULP_PAD_PTC1, |
| IMX7ULP_PAD_PTC2, |
| IMX7ULP_PAD_PTC3, |
| IMX7ULP_PAD_PTC4, |
| IMX7ULP_PAD_PTC5, |
| IMX7ULP_PAD_PTC6, |
| IMX7ULP_PAD_PTC7, |
| IMX7ULP_PAD_PTC8, |
| IMX7ULP_PAD_PTC9, |
| IMX7ULP_PAD_PTC10, |
| IMX7ULP_PAD_PTC11, |
| IMX7ULP_PAD_PTC12, |
| IMX7ULP_PAD_PTC13, |
| IMX7ULP_PAD_PTC14, |
| IMX7ULP_PAD_PTC15, |
| IMX7ULP_PAD_PTC16, |
| IMX7ULP_PAD_PTC17, |
| IMX7ULP_PAD_PTC18, |
| IMX7ULP_PAD_PTC19, |
| IMX7ULP_PAD_RESERVE0, |
| IMX7ULP_PAD_RESERVE1, |
| IMX7ULP_PAD_RESERVE2, |
| IMX7ULP_PAD_RESERVE3, |
| IMX7ULP_PAD_RESERVE4, |
| IMX7ULP_PAD_RESERVE5, |
| IMX7ULP_PAD_RESERVE6, |
| IMX7ULP_PAD_RESERVE7, |
| IMX7ULP_PAD_RESERVE8, |
| IMX7ULP_PAD_RESERVE9, |
| IMX7ULP_PAD_RESERVE10, |
| IMX7ULP_PAD_RESERVE11, |
| IMX7ULP_PAD_PTD0, |
| IMX7ULP_PAD_PTD1, |
| IMX7ULP_PAD_PTD2, |
| IMX7ULP_PAD_PTD3, |
| IMX7ULP_PAD_PTD4, |
| IMX7ULP_PAD_PTD5, |
| IMX7ULP_PAD_PTD6, |
| IMX7ULP_PAD_PTD7, |
| IMX7ULP_PAD_PTD8, |
| IMX7ULP_PAD_PTD9, |
| IMX7ULP_PAD_PTD10, |
| IMX7ULP_PAD_PTD11, |
| IMX7ULP_PAD_RESERVE12, |
| IMX7ULP_PAD_RESERVE13, |
| IMX7ULP_PAD_RESERVE14, |
| IMX7ULP_PAD_RESERVE15, |
| IMX7ULP_PAD_RESERVE16, |
| IMX7ULP_PAD_RESERVE17, |
| IMX7ULP_PAD_RESERVE18, |
| IMX7ULP_PAD_RESERVE19, |
| IMX7ULP_PAD_RESERVE20, |
| IMX7ULP_PAD_RESERVE21, |
| IMX7ULP_PAD_RESERVE22, |
| IMX7ULP_PAD_RESERVE23, |
| IMX7ULP_PAD_RESERVE24, |
| IMX7ULP_PAD_RESERVE25, |
| IMX7ULP_PAD_RESERVE26, |
| IMX7ULP_PAD_RESERVE27, |
| IMX7ULP_PAD_RESERVE28, |
| IMX7ULP_PAD_RESERVE29, |
| IMX7ULP_PAD_RESERVE30, |
| IMX7ULP_PAD_RESERVE31, |
| IMX7ULP_PAD_PTE0, |
| IMX7ULP_PAD_PTE1, |
| IMX7ULP_PAD_PTE2, |
| IMX7ULP_PAD_PTE3, |
| IMX7ULP_PAD_PTE4, |
| IMX7ULP_PAD_PTE5, |
| IMX7ULP_PAD_PTE6, |
| IMX7ULP_PAD_PTE7, |
| IMX7ULP_PAD_PTE8, |
| IMX7ULP_PAD_PTE9, |
| IMX7ULP_PAD_PTE10, |
| IMX7ULP_PAD_PTE11, |
| IMX7ULP_PAD_PTE12, |
| IMX7ULP_PAD_PTE13, |
| IMX7ULP_PAD_PTE14, |
| IMX7ULP_PAD_PTE15, |
| IMX7ULP_PAD_RESERVE32, |
| IMX7ULP_PAD_RESERVE33, |
| IMX7ULP_PAD_RESERVE34, |
| IMX7ULP_PAD_RESERVE35, |
| IMX7ULP_PAD_RESERVE36, |
| IMX7ULP_PAD_RESERVE37, |
| IMX7ULP_PAD_RESERVE38, |
| IMX7ULP_PAD_RESERVE39, |
| IMX7ULP_PAD_RESERVE40, |
| IMX7ULP_PAD_RESERVE41, |
| IMX7ULP_PAD_RESERVE42, |
| IMX7ULP_PAD_RESERVE43, |
| IMX7ULP_PAD_RESERVE44, |
| IMX7ULP_PAD_RESERVE45, |
| IMX7ULP_PAD_RESERVE46, |
| IMX7ULP_PAD_RESERVE47, |
| IMX7ULP_PAD_PTF0, |
| IMX7ULP_PAD_PTF1, |
| IMX7ULP_PAD_PTF2, |
| IMX7ULP_PAD_PTF3, |
| IMX7ULP_PAD_PTF4, |
| IMX7ULP_PAD_PTF5, |
| IMX7ULP_PAD_PTF6, |
| IMX7ULP_PAD_PTF7, |
| IMX7ULP_PAD_PTF8, |
| IMX7ULP_PAD_PTF9, |
| IMX7ULP_PAD_PTF10, |
| IMX7ULP_PAD_PTF11, |
| IMX7ULP_PAD_PTF12, |
| IMX7ULP_PAD_PTF13, |
| IMX7ULP_PAD_PTF14, |
| IMX7ULP_PAD_PTF15, |
| IMX7ULP_PAD_PTF16, |
| IMX7ULP_PAD_PTF17, |
| IMX7ULP_PAD_PTF18, |
| IMX7ULP_PAD_PTF19, |
| }; |
| |
| /* Pad names for the pinmux subsystem */ |
| static const struct pinctrl_pin_desc imx7ulp_pinctrl_pads[] = { |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC0), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC1), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC2), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC3), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC4), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC5), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC6), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC7), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC8), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC9), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC10), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC11), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC12), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC13), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC14), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC15), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC16), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC17), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC18), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTC19), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE0), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE1), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE2), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE3), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE4), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE5), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE6), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE7), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE8), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE9), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE10), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE11), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD0), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD1), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD2), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD3), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD4), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD5), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD6), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD7), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD8), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD9), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD10), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTD11), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE12), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE13), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE14), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE15), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE16), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE17), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE18), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE19), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE20), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE21), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE22), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE23), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE24), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE25), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE26), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE27), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE28), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE29), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE30), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE31), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE0), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE1), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE2), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE3), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE4), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE5), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE6), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE7), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE8), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE9), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE10), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE11), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE12), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE13), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE14), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTE15), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE32), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE33), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE34), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE35), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE36), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE37), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE38), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE39), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE40), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE41), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE42), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE43), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE44), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE45), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE46), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_RESERVE47), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF0), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF1), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF2), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF3), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF4), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF5), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF6), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF7), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF8), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF9), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF10), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF11), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF12), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF13), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF14), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF15), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF16), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF17), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF18), |
| IMX_PINCTRL_PIN(IMX7ULP_PAD_PTF19), |
| }; |
| |
| #define BM_OBE_ENABLED BIT(17) |
| #define BM_IBE_ENABLED BIT(16) |
| #define BM_LK_ENABLED BIT(15) |
| #define BM_MUX_MODE 0xf00 |
| #define BP_MUX_MODE 8 |
| #define BM_PULL_ENABLED BIT(1) |
| |
| static const struct imx_cfg_params_decode imx7ulp_cfg_decodes[] = { |
| IMX_CFG_PARAMS_DECODE(PIN_CONFIG_DRIVE_STRENGTH, BIT(6), 6), |
| IMX_CFG_PARAMS_DECODE(PIN_CONFIG_DRIVE_PUSH_PULL, BIT(5), 5), |
| IMX_CFG_PARAMS_DECODE(PIN_CONFIG_SLEW_RATE, BIT(2), 2), |
| IMX_CFG_PARAMS_DECODE(PIN_CONFIG_BIAS_DISABLE, BIT(1), 1), |
| IMX_CFG_PARAMS_DECODE(PIN_CONFIG_BIAS_PULL_UP, BIT(0), 0), |
| |
| IMX_CFG_PARAMS_DECODE_INVERT(PIN_CONFIG_DRIVE_OPEN_DRAIN, BIT(5), 5), |
| IMX_CFG_PARAMS_DECODE_INVERT(PIN_CONFIG_BIAS_PULL_DOWN, BIT(0), 0), |
| }; |
| |
| static void imx7ulp_cfg_params_fixup(unsigned long *configs, |
| unsigned int num_configs, |
| u32 *raw_config) |
| { |
| enum pin_config_param param; |
| u32 param_val; |
| int i; |
| |
| /* lock field disabled */ |
| *raw_config &= ~BM_LK_ENABLED; |
| |
| for (i = 0; i < num_configs; i++) { |
| param = pinconf_to_config_param(configs[i]); |
| param_val = pinconf_to_config_argument(configs[i]); |
| |
| if ((param == PIN_CONFIG_BIAS_PULL_UP) || |
| (param == PIN_CONFIG_BIAS_PULL_DOWN)) { |
| /* pull enabled */ |
| *raw_config |= BM_PULL_ENABLED; |
| |
| return; |
| } |
| } |
| } |
| |
| static int imx7ulp_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, |
| struct pinctrl_gpio_range *range, |
| unsigned offset, bool input) |
| { |
| struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev); |
| const struct imx_pin_reg *pin_reg; |
| u32 reg; |
| |
| pin_reg = &ipctl->pin_regs[offset]; |
| if (pin_reg->mux_reg == -1) |
| return -EINVAL; |
| |
| reg = readl(ipctl->base + pin_reg->mux_reg); |
| if (input) |
| reg = (reg & ~BM_OBE_ENABLED) | BM_IBE_ENABLED; |
| else |
| reg = (reg & ~BM_IBE_ENABLED) | BM_OBE_ENABLED; |
| writel(reg, ipctl->base + pin_reg->mux_reg); |
| |
| return 0; |
| } |
| |
| static const struct imx_pinctrl_soc_info imx7ulp_pinctrl_info = { |
| .pins = imx7ulp_pinctrl_pads, |
| .npins = ARRAY_SIZE(imx7ulp_pinctrl_pads), |
| .flags = ZERO_OFFSET_VALID | SHARE_MUX_CONF_REG, |
| .gpio_set_direction = imx7ulp_pmx_gpio_set_direction, |
| .mux_mask = BM_MUX_MODE, |
| .mux_shift = BP_MUX_MODE, |
| .generic_pinconf = true, |
| .decodes = imx7ulp_cfg_decodes, |
| .num_decodes = ARRAY_SIZE(imx7ulp_cfg_decodes), |
| .fixup = imx7ulp_cfg_params_fixup, |
| }; |
| |
| static const struct of_device_id imx7ulp_pinctrl_of_match[] = { |
| { .compatible = "fsl,imx7ulp-iomuxc1", }, |
| { /* sentinel */ } |
| }; |
| |
| static int imx7ulp_pinctrl_probe(struct platform_device *pdev) |
| { |
| return imx_pinctrl_probe(pdev, &imx7ulp_pinctrl_info); |
| } |
| |
| static struct platform_driver imx7ulp_pinctrl_driver = { |
| .driver = { |
| .name = "imx7ulp-pinctrl", |
| .of_match_table = of_match_ptr(imx7ulp_pinctrl_of_match), |
| .suppress_bind_attrs = true, |
| }, |
| .probe = imx7ulp_pinctrl_probe, |
| }; |
| |
| static int __init imx7ulp_pinctrl_init(void) |
| { |
| return platform_driver_register(&imx7ulp_pinctrl_driver); |
| } |
| arch_initcall(imx7ulp_pinctrl_init); |