1031ed2faSVipin KUMAR /* 2031ed2faSVipin KUMAR * (C) Copyright 2009 3031ed2faSVipin KUMAR * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com. 4031ed2faSVipin KUMAR * 5031ed2faSVipin KUMAR * See file CREDITS for list of people who contributed to this 6031ed2faSVipin KUMAR * project. 7031ed2faSVipin KUMAR * 8031ed2faSVipin KUMAR * This program is free software; you can redistribute it and/or 9031ed2faSVipin KUMAR * modify it under the terms of the GNU General Public License as 10031ed2faSVipin KUMAR * published by the Free Software Foundation; either version 2 of 11031ed2faSVipin KUMAR * the License, or (at your option) any later version. 12031ed2faSVipin KUMAR * 13031ed2faSVipin KUMAR * This program is distributed in the hope that it will be useful, 14031ed2faSVipin KUMAR * but WITHOUT ANY WARRANTY; without even the implied warranty of 15031ed2faSVipin KUMAR * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16031ed2faSVipin KUMAR * GNU General Public License for more details. 17031ed2faSVipin KUMAR * 18031ed2faSVipin KUMAR * You should have received a copy of the GNU General Public License 19031ed2faSVipin KUMAR * along with this program; if not, write to the Free Software 20031ed2faSVipin KUMAR * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21031ed2faSVipin KUMAR * MA 02111-1307 USA 22031ed2faSVipin KUMAR */ 23031ed2faSVipin KUMAR 24031ed2faSVipin KUMAR #ifndef __DW_I2C_H_ 25031ed2faSVipin KUMAR #define __DW_I2C_H_ 26031ed2faSVipin KUMAR 27031ed2faSVipin KUMAR struct i2c_regs { 28031ed2faSVipin KUMAR u32 ic_con; 29031ed2faSVipin KUMAR u32 ic_tar; 30031ed2faSVipin KUMAR u32 ic_sar; 31031ed2faSVipin KUMAR u32 ic_hs_maddr; 32031ed2faSVipin KUMAR u32 ic_cmd_data; 33031ed2faSVipin KUMAR u32 ic_ss_scl_hcnt; 34031ed2faSVipin KUMAR u32 ic_ss_scl_lcnt; 35031ed2faSVipin KUMAR u32 ic_fs_scl_hcnt; 36031ed2faSVipin KUMAR u32 ic_fs_scl_lcnt; 37031ed2faSVipin KUMAR u32 ic_hs_scl_hcnt; 38031ed2faSVipin KUMAR u32 ic_hs_scl_lcnt; 39031ed2faSVipin KUMAR u32 ic_intr_stat; 40031ed2faSVipin KUMAR u32 ic_intr_mask; 41031ed2faSVipin KUMAR u32 ic_raw_intr_stat; 42031ed2faSVipin KUMAR u32 ic_rx_tl; 43031ed2faSVipin KUMAR u32 ic_tx_tl; 44031ed2faSVipin KUMAR u32 ic_clr_intr; 45031ed2faSVipin KUMAR u32 ic_clr_rx_under; 46031ed2faSVipin KUMAR u32 ic_clr_rx_over; 47031ed2faSVipin KUMAR u32 ic_clr_tx_over; 48031ed2faSVipin KUMAR u32 ic_clr_rd_req; 49031ed2faSVipin KUMAR u32 ic_clr_tx_abrt; 50031ed2faSVipin KUMAR u32 ic_clr_rx_done; 51031ed2faSVipin KUMAR u32 ic_clr_activity; 52031ed2faSVipin KUMAR u32 ic_clr_stop_det; 53031ed2faSVipin KUMAR u32 ic_clr_start_det; 54031ed2faSVipin KUMAR u32 ic_clr_gen_call; 55031ed2faSVipin KUMAR u32 ic_enable; 56031ed2faSVipin KUMAR u32 ic_status; 57031ed2faSVipin KUMAR u32 ic_txflr; 58031ed2faSVipin KUMAR u32 ix_rxflr; 59031ed2faSVipin KUMAR u32 reserved_1; 60031ed2faSVipin KUMAR u32 ic_tx_abrt_source; 61031ed2faSVipin KUMAR }; 62031ed2faSVipin KUMAR 63*d40d914cSArmando Visconti #if !defined(IC_CLK) 64031ed2faSVipin KUMAR #define IC_CLK 166 65*d40d914cSArmando Visconti #endif 66031ed2faSVipin KUMAR #define NANO_TO_MICRO 1000 67031ed2faSVipin KUMAR 68031ed2faSVipin KUMAR /* High and low times in different speed modes (in ns) */ 69031ed2faSVipin KUMAR #define MIN_SS_SCL_HIGHTIME 4000 70ea31b7a7SArmando Visconti #define MIN_SS_SCL_LOWTIME 4700 71ea31b7a7SArmando Visconti #define MIN_FS_SCL_HIGHTIME 600 72ea31b7a7SArmando Visconti #define MIN_FS_SCL_LOWTIME 1300 73031ed2faSVipin KUMAR #define MIN_HS_SCL_HIGHTIME 60 74031ed2faSVipin KUMAR #define MIN_HS_SCL_LOWTIME 160 75031ed2faSVipin KUMAR 76031ed2faSVipin KUMAR /* Worst case timeout for 1 byte is kept as 2ms */ 77031ed2faSVipin KUMAR #define I2C_BYTE_TO (CONFIG_SYS_HZ/500) 78031ed2faSVipin KUMAR #define I2C_STOPDET_TO (CONFIG_SYS_HZ/500) 79031ed2faSVipin KUMAR #define I2C_BYTE_TO_BB (I2C_BYTE_TO * 16) 80031ed2faSVipin KUMAR 81031ed2faSVipin KUMAR /* i2c control register definitions */ 82031ed2faSVipin KUMAR #define IC_CON_SD 0x0040 83031ed2faSVipin KUMAR #define IC_CON_RE 0x0020 84031ed2faSVipin KUMAR #define IC_CON_10BITADDRMASTER 0x0010 85031ed2faSVipin KUMAR #define IC_CON_10BITADDR_SLAVE 0x0008 86031ed2faSVipin KUMAR #define IC_CON_SPD_MSK 0x0006 87031ed2faSVipin KUMAR #define IC_CON_SPD_SS 0x0002 88031ed2faSVipin KUMAR #define IC_CON_SPD_FS 0x0004 89031ed2faSVipin KUMAR #define IC_CON_SPD_HS 0x0006 90031ed2faSVipin KUMAR #define IC_CON_MM 0x0001 91031ed2faSVipin KUMAR 92031ed2faSVipin KUMAR /* i2c target address register definitions */ 93031ed2faSVipin KUMAR #define TAR_ADDR 0x0050 94031ed2faSVipin KUMAR 95031ed2faSVipin KUMAR /* i2c slave address register definitions */ 96031ed2faSVipin KUMAR #define IC_SLAVE_ADDR 0x0002 97031ed2faSVipin KUMAR 98031ed2faSVipin KUMAR /* i2c data buffer and command register definitions */ 99031ed2faSVipin KUMAR #define IC_CMD 0x0100 100491739bbSArmando Visconti #define IC_STOP 0x0200 101031ed2faSVipin KUMAR 102031ed2faSVipin KUMAR /* i2c interrupt status register definitions */ 103031ed2faSVipin KUMAR #define IC_GEN_CALL 0x0800 104031ed2faSVipin KUMAR #define IC_START_DET 0x0400 105031ed2faSVipin KUMAR #define IC_STOP_DET 0x0200 106031ed2faSVipin KUMAR #define IC_ACTIVITY 0x0100 107031ed2faSVipin KUMAR #define IC_RX_DONE 0x0080 108031ed2faSVipin KUMAR #define IC_TX_ABRT 0x0040 109031ed2faSVipin KUMAR #define IC_RD_REQ 0x0020 110031ed2faSVipin KUMAR #define IC_TX_EMPTY 0x0010 111031ed2faSVipin KUMAR #define IC_TX_OVER 0x0008 112031ed2faSVipin KUMAR #define IC_RX_FULL 0x0004 113031ed2faSVipin KUMAR #define IC_RX_OVER 0x0002 114031ed2faSVipin KUMAR #define IC_RX_UNDER 0x0001 115031ed2faSVipin KUMAR 116031ed2faSVipin KUMAR /* fifo threshold register definitions */ 117031ed2faSVipin KUMAR #define IC_TL0 0x00 118031ed2faSVipin KUMAR #define IC_TL1 0x01 119031ed2faSVipin KUMAR #define IC_TL2 0x02 120031ed2faSVipin KUMAR #define IC_TL3 0x03 121031ed2faSVipin KUMAR #define IC_TL4 0x04 122031ed2faSVipin KUMAR #define IC_TL5 0x05 123031ed2faSVipin KUMAR #define IC_TL6 0x06 124031ed2faSVipin KUMAR #define IC_TL7 0x07 125031ed2faSVipin KUMAR #define IC_RX_TL IC_TL0 126031ed2faSVipin KUMAR #define IC_TX_TL IC_TL0 127031ed2faSVipin KUMAR 128031ed2faSVipin KUMAR /* i2c enable register definitions */ 129031ed2faSVipin KUMAR #define IC_ENABLE_0B 0x0001 130031ed2faSVipin KUMAR 131031ed2faSVipin KUMAR /* i2c status register definitions */ 132031ed2faSVipin KUMAR #define IC_STATUS_SA 0x0040 133031ed2faSVipin KUMAR #define IC_STATUS_MA 0x0020 134031ed2faSVipin KUMAR #define IC_STATUS_RFF 0x0010 135031ed2faSVipin KUMAR #define IC_STATUS_RFNE 0x0008 136031ed2faSVipin KUMAR #define IC_STATUS_TFE 0x0004 137031ed2faSVipin KUMAR #define IC_STATUS_TFNF 0x0002 138031ed2faSVipin KUMAR #define IC_STATUS_ACT 0x0001 139031ed2faSVipin KUMAR 140031ed2faSVipin KUMAR /* Speed Selection */ 141031ed2faSVipin KUMAR #define IC_SPEED_MODE_STANDARD 1 142031ed2faSVipin KUMAR #define IC_SPEED_MODE_FAST 2 143031ed2faSVipin KUMAR #define IC_SPEED_MODE_MAX 3 144031ed2faSVipin KUMAR 145031ed2faSVipin KUMAR #define I2C_MAX_SPEED 3400000 146031ed2faSVipin KUMAR #define I2C_FAST_SPEED 400000 147031ed2faSVipin KUMAR #define I2C_STANDARD_SPEED 100000 148031ed2faSVipin KUMAR 149031ed2faSVipin KUMAR #endif /* __DW_I2C_H_ */ 150