1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * PRU-ICSS Subsystem user interfaces 4 * 5 * Copyright (C) 2015-2023 Texas Instruments Incorporated - http://www.ti.com 6 * MD Danish Anwar <danishanwar@ti.com> 7 */ 8 9#ifndef _SOC_TI_PRUSS_H_ 10#define _SOC_TI_PRUSS_H_ 11 12#include <linux/bits.h> 13#include <linux/regmap.h> 14 15/* 16 * PRU_ICSS_CFG registers 17 * SYSCFG, ISRP, ISP, IESP, IECP, SCRP applicable on AMxxxx devices only 18 */ 19#define PRUSS_CFG_REVID 0x00 20#define PRUSS_CFG_SYSCFG 0x04 21#define PRUSS_CFG_GPCFG(x) (0x08 + (x) * 4) 22#define PRUSS_CFG_CGR 0x10 23#define PRUSS_CFG_ISRP 0x14 24#define PRUSS_CFG_ISP 0x18 25#define PRUSS_CFG_IESP 0x1C 26#define PRUSS_CFG_IECP 0x20 27#define PRUSS_CFG_SCRP 0x24 28#define PRUSS_CFG_PMAO 0x28 29#define PRUSS_CFG_MII_RT 0x2C 30#define PRUSS_CFG_IEPCLK 0x30 31#define PRUSS_CFG_SPP 0x34 32#define PRUSS_CFG_PIN_MX 0x40 33 34/* PRUSS_GPCFG register bits */ 35#define PRUSS_GPCFG_PRU_GPI_MODE_MASK GENMASK(1, 0) 36#define PRUSS_GPCFG_PRU_GPI_MODE_SHIFT 0 37 38#define PRUSS_GPCFG_PRU_MUX_SEL_SHIFT 26 39#define PRUSS_GPCFG_PRU_MUX_SEL_MASK GENMASK(29, 26) 40 41/* PRUSS_MII_RT register bits */ 42#define PRUSS_MII_RT_EVENT_EN BIT(0) 43 44/* PRUSS_SPP register bits */ 45#define PRUSS_SPP_XFER_SHIFT_EN BIT(1) 46#define PRUSS_SPP_PRU1_PAD_HP_EN BIT(0) 47#define PRUSS_SPP_RTU_XFR_SHIFT_EN BIT(3) 48 49/** 50 * pruss_cfg_read() - read a PRUSS CFG sub-module register 51 * @pruss: the pruss instance handle 52 * @reg: register offset within the CFG sub-module 53 * @val: pointer to return the value in 54 * 55 * Reads a given register within the PRUSS CFG sub-module and 56 * returns it through the passed-in @val pointer 57 * 58 * Return: 0 on success, or an error code otherwise 59 */ 60static int pruss_cfg_read(struct pruss *pruss, unsigned int reg, unsigned int *val) 61{ 62 if (IS_ERR_OR_NULL(pruss)) 63 return -EINVAL; 64 65 return regmap_read(pruss->cfg_regmap, reg, val); 66} 67 68/** 69 * pruss_cfg_update() - configure a PRUSS CFG sub-module register 70 * @pruss: the pruss instance handle 71 * @reg: register offset within the CFG sub-module 72 * @mask: bit mask to use for programming the @val 73 * @val: value to write 74 * 75 * Programs a given register within the PRUSS CFG sub-module 76 * 77 * Return: 0 on success, or an error code otherwise 78 */ 79static int pruss_cfg_update(struct pruss *pruss, unsigned int reg, 80 unsigned int mask, unsigned int val) 81{ 82 if (IS_ERR_OR_NULL(pruss)) 83 return -EINVAL; 84 85 return regmap_update_bits(pruss->cfg_regmap, reg, mask, val); 86} 87 88#endif /* _SOC_TI_PRUSS_H_ */ 89