Suman Anna | 51b5760 | 2023-04-14 10:25:41 +0530 | [diff] [blame] | 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_ */ |