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authorH. Nikolaus Schaller <hns@goldelico.com>2012-03-26 20:55:28 +0200
committerH. Nikolaus Schaller <hns@goldelico.com>2012-03-26 20:55:28 +0200
commit92988a21ad4c4c9504295ccb580c9f806134471b (patch)
tree5effc9f14170112450de05c67dafbe8d5034d595 /u-boot/include/at91rm9200_i2c.h
parentca2b506783b676c95762c54ea24dcfdaae1947c9 (diff)
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added boot script files to repository
Diffstat (limited to 'u-boot/include/at91rm9200_i2c.h')
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diff --git a/u-boot/include/at91rm9200_i2c.h b/u-boot/include/at91rm9200_i2c.h
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+/* ---------------------------------------------------------------------------- */
+/* ATMEL Microcontroller Software Support - ROUSSET - */
+/* ---------------------------------------------------------------------------- */
+/* The software is delivered "AS IS" without warranty or condition of any */
+/* kind, either express, implied or statutory. This includes without */
+/* limitation any warranty or condition with respect to merchantability or */
+/* fitness for any particular purpose, or against the infringements of */
+/* intellectual property rights of others. */
+/* ---------------------------------------------------------------------------- */
+/* File Name : at91rm9200_i2c.h */
+/* Object : AT91RM9200 / TWI definitions */
+/* Generated : AT91 SW Application Group 12/03/2002 (10:48:02) */
+/* */
+/* ---------------------------------------------------------------------------- */
+
+#ifndef AT91RM9200_TWI_H
+#define AT91RM9200_TWI_H
+
+/* ******************************************************************************/
+/* SOFTWARE API DEFINITION FOR Two-wire Interface */
+/* ******************************************************************************/
+#ifndef __ASSEMBLY__
+
+typedef struct _AT91S_TWI {
+ AT91_REG TWI_CR; /* Control Register */
+ AT91_REG TWI_MMR; /* Master Mode Register */
+ AT91_REG TWI_SMR; /* Slave Mode Register */
+ AT91_REG TWI_IADR; /* Internal Address Register */
+ AT91_REG TWI_CWGR; /* Clock Waveform Generator Register */
+ AT91_REG Reserved0[3];
+ AT91_REG TWI_SR; /* Status Register */
+ AT91_REG TWI_IER; /* Interrupt Enable Register */
+ AT91_REG TWI_IDR; /* Interrupt Disable Register */
+ AT91_REG TWI_IMR; /* Interrupt Mask Register */
+ AT91_REG TWI_RHR; /* Receive Holding Register */
+ AT91_REG TWI_THR; /* Transmit Holding Register */
+ AT91_REG Reserved1[50];
+ AT91_REG TWI_RPR; /* Receive Pointer Register */
+ AT91_REG TWI_RCR; /* Receive Counter Register */
+ AT91_REG TWI_TPR; /* Transmit Pointer Register */
+ AT91_REG TWI_TCR; /* Transmit Counter Register */
+ AT91_REG TWI_RNPR; /* Receive Next Pointer Register */
+ AT91_REG TWI_RNCR; /* Receive Next Counter Register */
+ AT91_REG TWI_TNPR; /* Transmit Next Pointer Register */
+ AT91_REG TWI_TNCR; /* Transmit Next Counter Register */
+ AT91_REG TWI_PTCR; /* PDC Transfer Control Register */
+ AT91_REG TWI_PTSR; /* PDC Transfer Status Register */
+} AT91S_TWI, *AT91PS_TWI;
+
+#endif
+
+/* -------- TWI_CR : (TWI Offset: 0x0) TWI Control Register -------- */
+#define AT91C_TWI_START (0x1 << 0) /* (TWI) Send a START Condition */
+#define AT91C_TWI_STOP (0x1 << 1) /* (TWI) Send a STOP Condition */
+#define AT91C_TWI_MSEN (0x1 << 2) /* (TWI) TWI Master Transfer Enabled */
+#define AT91C_TWI_MSDIS (0x1 << 3) /* (TWI) TWI Master Transfer Disabled */
+#define AT91C_TWI_SVEN (0x1 << 4) /* (TWI) TWI Slave Transfer Enabled */
+#define AT91C_TWI_SVDIS (0x1 << 5) /* (TWI) TWI Slave Transfer Disabled */
+#define AT91C_TWI_SWRST (0x1 << 7) /* (TWI) Software Reset */
+/* -------- TWI_MMR : (TWI Offset: 0x4) TWI Master Mode Register -------- */
+#define AT91C_TWI_IADRSZ (0x3 << 8) /* (TWI) Internal Device Address Size */
+#define AT91C_TWI_IADRSZ_NO (0x0 << 8) /* (TWI) No internal device address */
+#define AT91C_TWI_IADRSZ_1_BYTE (0x1 << 8) /* (TWI) One-byte internal device address */
+#define AT91C_TWI_IADRSZ_2_BYTE (0x2 << 8) /* (TWI) Two-byte internal device address */
+#define AT91C_TWI_IADRSZ_3_BYTE (0x3 << 8) /* (TWI) Three-byte internal device address */
+#define AT91C_TWI_MREAD (0x1 << 12) /* (TWI) Master Read Direction */
+#define AT91C_TWI_DADR (0x7F << 6) /* (TWI) Device Address */
+/* -------- TWI_SMR : (TWI Offset: 0x8) TWI Slave Mode Register -------- */
+#define AT91C_TWI_SADR (0x7F << 16) /* (TWI) Slave Device Address */
+/* -------- TWI_CWGR : (TWI Offset: 0x10) TWI Clock Waveform Generator Register -------- */
+#define AT91C_TWI_CLDIV (0xFF << 0) /* (TWI) Clock Low Divider */
+#define AT91C_TWI_CHDIV (0xFF << 8) /* (TWI) Clock High Divider */
+#define AT91C_TWI_CKDIV (0x7 << 16) /* (TWI) Clock Divider */
+/* -------- TWI_SR : (TWI Offset: 0x20) TWI Status Register -------- */
+#define AT91C_TWI_TXCOMP (0x1 << 0) /* (TWI) Transmission Completed */
+#define AT91C_TWI_RXRDY (0x1 << 1) /* (TWI) Receive holding register ReaDY */
+#define AT91C_TWI_TXRDY (0x1 << 2) /* (TWI) Transmit holding register ReaDY*/
+#define AT91C_TWI_SVREAD (0x1 << 3) /* (TWI) Slave Read */
+#define AT91C_TWI_SVACC (0x1 << 4) /* (TWI) Slave Access */
+#define AT91C_TWI_GCACC (0x1 << 5) /* (TWI) General Call Access */
+#define AT91C_TWI_OVRE (0x1 << 6) /* (TWI) Overrun Error */
+#define AT91C_TWI_UNRE (0x1 << 7) /* (TWI) Underrun Error */
+#define AT91C_TWI_NACK (0x1 << 8) /* (TWI) Not Acknowledged */
+#define AT91C_TWI_ARBLST (0x1 << 9) /* (TWI) Arbitration Lost */
+/* -------- TWI_IER : (TWI Offset: 0x24) TWI Interrupt Enable Register -------- */
+/* -------- TWI_IDR : (TWI Offset: 0x28) TWI Interrupt Disable Register ------- */
+/* -------- TWI_IMR : (TWI Offset: 0x2c) TWI Interrupt Mask Register -------- */
+
+/*
+ i2c Support for Atmel's AT91RM9200 Two-Wire Interface
+
+ (c) Rick Bronson
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef AT91_I2C_H
+#define AT91_I2C_H
+
+#define AT91C_TWI_CLOCK 100000
+#define AT91C_TWI_SCLOCK (10 * AT91C_MASTER_CLOCK / AT91C_TWI_CLOCK)
+#define AT91C_TWI_CKDIV1 (2 << 16) /* TWI clock divider. NOTE: see Errata #22 */
+
+#if (AT91C_TWI_SCLOCK % 10) >= 5
+#define AT91C_TWI_CLDIV2 ((AT91C_TWI_SCLOCK / 10) - 5)
+#else
+#define AT91C_TWI_CLDIV2 ((AT91C_TWI_SCLOCK / 10) - 6)
+#endif
+#define AT91C_TWI_CLDIV3 ((AT91C_TWI_CLDIV2 + (4 - AT91C_TWI_CLDIV2 % 4)) >> 2)
+
+#define AT91C_EEPROM_I2C_ADDRESS (0x50 << 16)
+
+#endif /* __ASSEMBLY__ */
+#endif /* AT91RM9200_TWI_H */