blob: c694353e39437c3e0f30caea9d3244fac9b828c4 [file] [log] [blame]
/* i2c_dw_registers.h - array access for I2C Design Ware registers */
/*
* Copyright (c) 2015 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __DRIVERS_I2C_DW_REGISTERS_H
#define __DRIVERS_I2C_DW_REGISTERS_H
#ifdef __cplusplus
extern "C" {
#endif
/* IC_CON bits */
#define IC_CON_TX_INTR_MODE (1 << 8)
#define IC_CON_STOP_DET_IFADDR (1 << 7)
#define IC_CON_SLAVE_DISABLE (1 << 6)
#define IC_CON_RESTART_EN (1 << 5)
#define IC_CON_10BIT_ADDR_MASTER (1 << 4)
#define IC_CON_10BIT_ADDR_SLAVE (1 << 3)
#define IC_CON_SPEED_MASK (0x3 << 1)
#define IC_CON_MASTER_MODE (1 << 0)
union ic_con_register {
uint16_t raw;
struct {
uint16_t master_mode : 1 __packed;
uint16_t speed : 2 __packed;
uint16_t addr_slave_10bit : 1 __packed;
uint16_t addr_master_10bit : 1 __packed;
uint16_t restart_en : 1 __packed;
uint16_t slave_disable : 1 __packed;
uint16_t stop_det : 1 __packed;
uint16_t tx_empty_ctl : 1 __packed;
uint16_t rx_fifo_full : 1 __packed;
} bits;
};
/* IC_DATA_CMD bits */
#define IC_DATA_CMD_DAT_MASK 0xFF
#define IC_DATA_CMD_CMD (1 << 8)
#define IC_DATA_CMD_STOP (1 << 9)
#define IC_DATA_CMD_RESTART (1 << 10)
union ic_data_cmd_register {
uint16_t raw;
struct {
uint16_t dat : 8 __packed;
uint16_t cmd : 1 __packed;
uint16_t stop : 1 __packed;
uint16_t restart : 1 __packed;
uint16_t reserved : 4 __packed;
} bits;
};
/* IC_ENABLE register bits */
#define IC_ENABLE_ENABLE (1 << 0)
#define IC_ENABLE_ABORT (1 << 1)
union ic_enable_register {
uint16_t raw;
struct {
uint16_t enable : 1 __packed;
uint16_t abort : 1 __packed;
uint16_t reserved : 13 __packed;
} bits;
};
/* DesignWare Interrupt bits positions */
#define DW_INTR_STAT_RX_UNDER (1 << 0)
#define DW_INTR_STAT_RX_OVER (1 << 1)
#define DW_INTR_STAT_RX_FULL (1 << 2)
#define DW_INTR_STAT_TX_OVER (1 << 3)
#define DW_INTR_STAT_TX_EMPTY (1 << 4)
#define DW_INTR_STAT_RD_REQ (1 << 5)
#define DW_INTR_STAT_TX_ABRT (1 << 6)
#define DW_INTR_STAT_RX_DONE (1 << 7)
#define DW_INTR_STAT_ACTIVITY (1 << 8)
#define DW_INTR_STAT_STOP_DET (1 << 9)
#define DW_INTR_STAT_START_DET (1 << 10)
#define DW_INTR_STAT_GEN_CALL (1 << 11)
#define DW_INTR_STAT_RESTART_DET (1 << 12)
#define DW_INTR_STAT_MST_ON_HOLD (1 << 13)
union ic_interrupt_register {
uint16_t raw;
struct {
uint16_t rx_under : 1 __packed;
uint16_t rx_over : 1 __packed;
uint16_t rx_full : 1 __packed;
uint16_t tx_over : 1 __packed;
uint16_t tx_empty : 1 __packed;
uint16_t rd_req : 1 __packed;
uint16_t tx_abrt : 1 __packed;
uint16_t rx_done : 1 __packed;
uint16_t activity : 1 __packed;
uint16_t stop_det : 1 __packed;
uint16_t start_det : 1 __packed;
uint16_t gen_call : 1 __packed;
uint16_t restart_det : 1 __packed;
uint16_t mst_on_hold : 1 __packed;
uint16_t reserved : 2 __packed;
} bits;
};
/* IC_TAR */
union ic_tar_register {
uint16_t raw;
struct {
uint16_t ic_tar : 9 __packed;
uint16_t gc_or_start : 1 __packed;
uint16_t special : 1 __packed;
uint16_t ic_10bitaddr_master : 1 __packed;
uint16_t reserved : 3 __packed;
} bits;
};
/* IC_SAR */
union ic_sar_register {
uint16_t raw;
struct {
uint16_t ic_sar : 9 __packed;
uint16_t reserved : 6 __packed;
} bits;
};
/* IC_STATUS */
union ic_status_register {
uint32_t raw;
struct {
uint32_t activity : 1 __packed;
uint32_t tfnf : 1 __packed;
uint32_t tfe : 1 __packed;
uint32_t rfne : 1 __packed;
uint32_t rff : 1 __packed;
uint32_t mst_activity : 1 __packed;
uint32_t slv_activity : 1 __packed;
uint32_t reserved : 24 __packed;
} bits;
};
union ic_comp_param_1_register {
uint32_t raw;
struct {
uint32_t apb_data_width : 2 __packed;
uint32_t max_speed_mode : 2 __packed;
uint32_t hc_count_values : 1 __packed;
uint32_t intr_io : 1 __packed;
uint32_t has_dma : 1 __packed;
uint32_t add_encoded_params : 1 __packed;
uint32_t rx_buffer_depth : 8 __packed;
uint32_t tx_buffer_depth : 8 __packed;
uint32_t reserved : 7 __packed;
} bits;
};
/*
* instantiate this like:
* volatile struct i2c_dw_registers *regs = (struct i2c_dw_regs *)0x80000000;
*
* If this is being set as a global, use the following change to avoid the
* base pointer from being reloaded after function calls:
* volatile struct i2c_dw_regs* const *regs = (struct i2c_dw_regs*)0x80000000;
*
* This will allow access to the registers like so:
* x = regs->ctrlreg;
* regs->ctrlreg = newval;
*/
struct i2c_dw_registers {
union ic_con_register ic_con; /* offset 0x00 */
uint16_t dummy1;
union ic_tar_register ic_tar; /* offset 0x04 */
uint16_t dummy2;
union ic_sar_register ic_sar; /* offset 0x08 */
uint16_t dummy3;
uint16_t ic_hs_maddr; /* offset 0x0C */
uint16_t dummy4;
union ic_data_cmd_register ic_data_cmd; /* offset 0x10 */
uint16_t dummy5;
uint16_t ic_ss_scl_hcnt; /* offset 0x14 */
uint16_t dummy6;
uint16_t ic_ss_scl_lcnt; /* offset 0x18 */
uint16_t dummy7;
uint16_t ic_fs_scl_hcnt; /* offset 0x1C */
uint16_t dummy8;
uint16_t ic_fs_scl_lcnt; /* offset 0x20 */
uint16_t dummy9;
uint16_t ic_hs_scl_hcnt; /* offset 0x24 */
uint16_t dummy10;
uint16_t ic_hs_scl_lcnt; /* offset 0x28 */
uint16_t dummy11;
union ic_interrupt_register ic_intr_stat; /* offset 0x2C */
uint16_t dummy12;
union ic_interrupt_register ic_intr_mask; /* offset 0x30 */
uint16_t dummy13;
union ic_interrupt_register ic_raw_intr_stat; /* offset 0x34 */
uint16_t dummy14;
uint16_t ic_rx_tl; /* offset 0x38 */
uint16_t dummy15;
uint16_t ic_tx_tl; /* offset 0x3C */
uint16_t dummy16;
uint16_t ic_clr_intr; /* offset 0x40 */
uint16_t dummy17;
uint16_t ic_clr_rx_under; /* offset 0x44 */
uint16_t dummy18;
uint16_t ic_clr_rx_over; /* offset 0x48 */
uint16_t dummy19;
uint16_t ic_clr_tx_over; /* offset 0x4C */
uint16_t dummy20;
uint16_t ic_clr_rd_req; /* offset 0x50 */
uint16_t dummy21;
uint16_t ic_clr_tx_abrt; /* offset 0x54 */
uint16_t dummy22;
uint16_t ic_clr_rx_done; /* offset 0x58 */
uint16_t dummy23;
uint16_t ic_clr_activity; /* offset 0x5C */
uint16_t dummy24;
uint16_t ic_clr_stop_det; /* offset 0x60 */
uint16_t dummy25;
uint16_t ic_clr_start_det; /* offset 0x64 */
uint16_t dummy26;
uint16_t ic_clr_gen_call; /* offset 0x68 */
uint16_t dummy27;
union ic_enable_register ic_enable; /* offset 0x6c */
uint16_t dummy28;
union ic_status_register ic_status; /* offset 0x70 */
uint32_t ic_txflr; /* offset 0x74 */
uint32_t ic_rxflr; /* offset 0x78 */
uint32_t ic_sda_hold; /* offset 0x7C */
uint32_t ic_tx_abrt_source; /* offset 0x80 */
uint32_t ic_slv_data_nack_only; /* offset 0x84 */
uint32_t ic_dma_cr; /* offset 0x88 */
uint32_t ic_dma_tdlr; /* offset 0x8C */
uint32_t ic_dma_rdlr; /* offset 0x90 */
uint32_t ic_sda_setup; /* offset 0x94 */
uint32_t ic_ack_general_call; /* offset 0x98 */
uint32_t ic_enable_status; /* offset 0x9C */
uint32_t ic_fs_spklen; /* offset 0xA0 */
uint32_t ic_hs_spklen; /* offset 0xA4 */
uint16_t ic_clr_restart_det; /* offset 0xA8 */
uint8_t filler[74];
union ic_comp_param_1_register ic_comp_param_1; /* offset 0xF4 */
uint32_t ic_comp_version; /* offset 0xF8 */
uint32_t ic_comp_type; /* offset 0xFC */
};
#ifdef __cplusplus
}
#endif
#endif /* __DRIVERS_I2C_DW_REGISTERS_H */