/* 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_ */
