| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * PRU-ICSS Subsystem user interfaces |
| * |
| * Copyright (C) 2015-2023 Texas Instruments Incorporated - http://www.ti.com |
| * MD Danish Anwar <danishanwar@ti.com> |
| */ |
| |
| #ifndef _SOC_TI_PRUSS_H_ |
| #define _SOC_TI_PRUSS_H_ |
| |
| #include <linux/bits.h> |
| #include <linux/regmap.h> |
| |
| /* |
| * PRU_ICSS_CFG registers |
| * SYSCFG, ISRP, ISP, IESP, IECP, SCRP applicable on AMxxxx devices only |
| */ |
| #define PRUSS_CFG_REVID 0x00 |
| #define PRUSS_CFG_SYSCFG 0x04 |
| #define PRUSS_CFG_GPCFG(x) (0x08 + (x) * 4) |
| #define PRUSS_CFG_CGR 0x10 |
| #define PRUSS_CFG_ISRP 0x14 |
| #define PRUSS_CFG_ISP 0x18 |
| #define PRUSS_CFG_IESP 0x1C |
| #define PRUSS_CFG_IECP 0x20 |
| #define PRUSS_CFG_SCRP 0x24 |
| #define PRUSS_CFG_PMAO 0x28 |
| #define PRUSS_CFG_MII_RT 0x2C |
| #define PRUSS_CFG_IEPCLK 0x30 |
| #define PRUSS_CFG_SPP 0x34 |
| #define PRUSS_CFG_PIN_MX 0x40 |
| |
| /* PRUSS_GPCFG register bits */ |
| #define PRUSS_GPCFG_PRU_GPI_MODE_MASK GENMASK(1, 0) |
| #define PRUSS_GPCFG_PRU_GPI_MODE_SHIFT 0 |
| |
| #define PRUSS_GPCFG_PRU_MUX_SEL_SHIFT 26 |
| #define PRUSS_GPCFG_PRU_MUX_SEL_MASK GENMASK(29, 26) |
| |
| /* PRUSS_MII_RT register bits */ |
| #define PRUSS_MII_RT_EVENT_EN BIT(0) |
| |
| /* PRUSS_SPP register bits */ |
| #define PRUSS_SPP_XFER_SHIFT_EN BIT(1) |
| #define PRUSS_SPP_PRU1_PAD_HP_EN BIT(0) |
| #define PRUSS_SPP_RTU_XFR_SHIFT_EN BIT(3) |
| |
| /** |
| * pruss_cfg_read() - read a PRUSS CFG sub-module register |
| * @pruss: the pruss instance handle |
| * @reg: register offset within the CFG sub-module |
| * @val: pointer to return the value in |
| * |
| * Reads a given register within the PRUSS CFG sub-module and |
| * returns it through the passed-in @val pointer |
| * |
| * Return: 0 on success, or an error code otherwise |
| */ |
| static int pruss_cfg_read(struct pruss *pruss, unsigned int reg, unsigned int *val) |
| { |
| if (IS_ERR_OR_NULL(pruss)) |
| return -EINVAL; |
| |
| return regmap_read(pruss->cfg_regmap, reg, val); |
| } |
| |
| /** |
| * pruss_cfg_update() - configure a PRUSS CFG sub-module register |
| * @pruss: the pruss instance handle |
| * @reg: register offset within the CFG sub-module |
| * @mask: bit mask to use for programming the @val |
| * @val: value to write |
| * |
| * Programs a given register within the PRUSS CFG sub-module |
| * |
| * Return: 0 on success, or an error code otherwise |
| */ |
| static int pruss_cfg_update(struct pruss *pruss, unsigned int reg, |
| unsigned int mask, unsigned int val) |
| { |
| if (IS_ERR_OR_NULL(pruss)) |
| return -EINVAL; |
| |
| return regmap_update_bits(pruss->cfg_regmap, reg, mask, val); |
| } |
| |
| #endif /* _SOC_TI_PRUSS_H_ */ |
