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 */ 60 static 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 */ 79 static 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