| /* |
| * (C) Copyright 2004 |
| * Texas Instruments, <www.ti.com> |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| #ifndef _OMAP24XX_I2C_H_ |
| #define _OMAP24XX_I2C_H_ |
| |
| #define I2C_BASE 0x48070000 |
| #define I2C_BASE2 0x48072000 /* nothing hooked up on h4 */ |
| |
| #define I2C_REV (I2C_BASE + 0x00) |
| #define I2C_IE (I2C_BASE + 0x04) |
| #define I2C_STAT (I2C_BASE + 0x08) |
| #define I2C_IV (I2C_BASE + 0x0c) |
| #define I2C_BUF (I2C_BASE + 0x14) |
| #define I2C_CNT (I2C_BASE + 0x18) |
| #define I2C_DATA (I2C_BASE + 0x1c) |
| #define I2C_SYSC (I2C_BASE + 0x20) |
| #define I2C_CON (I2C_BASE + 0x24) |
| #define I2C_OA (I2C_BASE + 0x28) |
| #define I2C_SA (I2C_BASE + 0x2c) |
| #define I2C_PSC (I2C_BASE + 0x30) |
| #define I2C_SCLL (I2C_BASE + 0x34) |
| #define I2C_SCLH (I2C_BASE + 0x38) |
| #define I2C_SYSTEST (I2C_BASE + 0x3c) |
| |
| /* I2C masks */ |
| |
| /* I2C Interrupt Enable Register (I2C_IE): */ |
| #define I2C_IE_GC_IE (1 << 5) |
| #define I2C_IE_XRDY_IE (1 << 4) /* Transmit data ready interrupt enable */ |
| #define I2C_IE_RRDY_IE (1 << 3) /* Receive data ready interrupt enable */ |
| #define I2C_IE_ARDY_IE (1 << 2) /* Register access ready interrupt enable */ |
| #define I2C_IE_NACK_IE (1 << 1) /* No acknowledgment interrupt enable */ |
| #define I2C_IE_AL_IE (1 << 0) /* Arbitration lost interrupt enable */ |
| |
| /* I2C Status Register (I2C_STAT): */ |
| |
| #define I2C_STAT_SBD (1 << 15) /* Single byte data */ |
| #define I2C_STAT_BB (1 << 12) /* Bus busy */ |
| #define I2C_STAT_ROVR (1 << 11) /* Receive overrun */ |
| #define I2C_STAT_XUDF (1 << 10) /* Transmit underflow */ |
| #define I2C_STAT_AAS (1 << 9) /* Address as slave */ |
| #define I2C_STAT_GC (1 << 5) |
| #define I2C_STAT_XRDY (1 << 4) /* Transmit data ready */ |
| #define I2C_STAT_RRDY (1 << 3) /* Receive data ready */ |
| #define I2C_STAT_ARDY (1 << 2) /* Register access ready */ |
| #define I2C_STAT_NACK (1 << 1) /* No acknowledgment interrupt enable */ |
| #define I2C_STAT_AL (1 << 0) /* Arbitration lost interrupt enable */ |
| |
| |
| /* I2C Interrupt Code Register (I2C_INTCODE): */ |
| |
| #define I2C_INTCODE_MASK 7 |
| #define I2C_INTCODE_NONE 0 |
| #define I2C_INTCODE_AL 1 /* Arbitration lost */ |
| #define I2C_INTCODE_NAK 2 /* No acknowledgement/general call */ |
| #define I2C_INTCODE_ARDY 3 /* Register access ready */ |
| #define I2C_INTCODE_RRDY 4 /* Rcv data ready */ |
| #define I2C_INTCODE_XRDY 5 /* Xmit data ready */ |
| |
| /* I2C Buffer Configuration Register (I2C_BUF): */ |
| |
| #define I2C_BUF_RDMA_EN (1 << 15) /* Receive DMA channel enable */ |
| #define I2C_BUF_XDMA_EN (1 << 7) /* Transmit DMA channel enable */ |
| |
| /* I2C Configuration Register (I2C_CON): */ |
| |
| #define I2C_CON_EN (1 << 15) /* I2C module enable */ |
| #define I2C_CON_BE (1 << 14) /* Big endian mode */ |
| #define I2C_CON_STB (1 << 11) /* Start byte mode (master mode only) */ |
| #define I2C_CON_MST (1 << 10) /* Master/slave mode */ |
| #define I2C_CON_TRX (1 << 9) /* Transmitter/receiver mode (master mode only) */ |
| #define I2C_CON_XA (1 << 8) /* Expand address */ |
| #define I2C_CON_STP (1 << 1) /* Stop condition (master mode only) */ |
| #define I2C_CON_STT (1 << 0) /* Start condition (master mode only) */ |
| |
| /* I2C System Test Register (I2C_SYSTEST): */ |
| |
| #define I2C_SYSTEST_ST_EN (1 << 15) /* System test enable */ |
| #define I2C_SYSTEST_FREE (1 << 14) /* Free running mode (on breakpoint) */ |
| #define I2C_SYSTEST_TMODE_MASK (3 << 12) /* Test mode select */ |
| #define I2C_SYSTEST_TMODE_SHIFT (12) /* Test mode select */ |
| #define I2C_SYSTEST_SCL_I (1 << 3) /* SCL line sense input value */ |
| #define I2C_SYSTEST_SCL_O (1 << 2) /* SCL line drive output value */ |
| #define I2C_SYSTEST_SDA_I (1 << 1) /* SDA line sense input value */ |
| #define I2C_SYSTEST_SDA_O (1 << 0) /* SDA line drive output value */ |
| |
| /* These values were copied from omap3, include/asm-arm/arch-omap3/i2c.h. */ |
| #define OMAP_I2C_STANDARD 100000 |
| #define OMAP_I2C_FAST_MODE 400000 |
| #define OMAP_I2C_HIGH_SPEED 3400000 |
| |
| #define SYSTEM_CLOCK_12 12000000 |
| #define SYSTEM_CLOCK_13 13000000 |
| #define SYSTEM_CLOCK_192 19200000 |
| #define SYSTEM_CLOCK_96 96000000 |
| |
| #ifndef I2C_IP_CLK |
| #define I2C_IP_CLK SYSTEM_CLOCK_96 |
| #endif |
| |
| #ifndef I2C_INTERNAL_SAMPLING_CLK |
| #define I2C_INTERNAL_SAMPLING_CLK 19200000 |
| #endif |
| |
| /* These are the trim values for standard and fast speed */ |
| #ifndef I2C_FASTSPEED_SCLL_TRIM |
| #define I2C_FASTSPEED_SCLL_TRIM 6 |
| #endif |
| #ifndef I2C_FASTSPEED_SCLH_TRIM |
| #define I2C_FASTSPEED_SCLH_TRIM 6 |
| #endif |
| |
| /* These are the trim values for high speed */ |
| #ifndef I2C_HIGHSPEED_PHASE_ONE_SCLL_TRIM |
| #define I2C_HIGHSPEED_PHASE_ONE_SCLL_TRIM I2C_FASTSPEED_SCLL_TRIM |
| #endif |
| #ifndef I2C_HIGHSPEED_PHASE_ONE_SCLH_TRIM |
| #define I2C_HIGHSPEED_PHASE_ONE_SCLH_TRIM I2C_FASTSPEED_SCLH_TRIM |
| #endif |
| #ifndef I2C_HIGHSPEED_PHASE_TWO_SCLL_TRIM |
| #define I2C_HIGHSPEED_PHASE_TWO_SCLL_TRIM I2C_FASTSPEED_SCLL_TRIM |
| #endif |
| #ifndef I2C_HIGHSPEED_PHASE_TWO_SCLH_TRIM |
| #define I2C_HIGHSPEED_PHASE_TWO_SCLH_TRIM I2C_FASTSPEED_SCLH_TRIM |
| #endif |
| |
| #define I2C_PSC_MAX 0x0f |
| #define I2C_PSC_MIN 0x00 |
| |
| |
| #endif |
