drivers/i2c : move i2c drivers to drivers/i2c

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 0 insertions, 283 deletions

diff --git a/drivers/tsi108_i2c.c b/drivers/tsi108_i2c.c
deleted file mode 100644
index d6736b0..0000000
--- a/drivers/tsi108_i2c.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * (C) Copyright 2004 Tundra Semiconductor Corp.
- * Author: Alex Bounine
- *
- * 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
- *
- */
-
-#include <config.h>
-#include <common.h>
-
-#ifdef CONFIG_TSI108_I2C
-#include <tsi108.h>
-
-#if defined(CONFIG_CMD_I2C)
-
-#define I2C_DELAY	100000
-#undef  DEBUG_I2C
-
-#ifdef DEBUG_I2C
-#define DPRINT(x) printf (x)
-#else
-#define DPRINT(x)
-#endif
-
-/* All functions assume that Tsi108 I2C block is the only master on the bus */
-/* I2C read helper function */
-
-static int i2c_read_byte (
-		uint i2c_chan,	/* I2C channel number: 0 - main, 1 - SDC SPD */
-		uchar chip_addr,/* I2C device address on the bus */
-		uint byte_addr,	/* Byte address within I2C device */
-		uchar * buffer	/* pointer to data buffer */
-		)
-{
-	u32 temp;
-	u32 to_count = I2C_DELAY;
-	u32 op_status = TSI108_I2C_TIMEOUT_ERR;
-	u32 chan_offset = TSI108_I2C_OFFSET;
-
-	DPRINT (("I2C read_byte() %d 0x%02x 0x%02x\n",
-		i2c_chan, chip_addr, byte_addr));
-
-	if (0 != i2c_chan)
-		chan_offset = TSI108_I2C_SDRAM_OFFSET;
-
-	/* Check if I2C operation is in progress */
-	temp = *(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2);
-
-	if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_WR_STATUS |
-			  I2C_CNTRL2_START))) {
-		/* Set device address and operation (read = 0) */
-		temp = (byte_addr << 16) | ((chip_addr & 0x07) << 8) |
-		    ((chip_addr >> 3) & 0x0F);
-		*(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL1) =
-		    temp;
-
-		/* Issue the read command
-		 * (at this moment all other parameters are 0
-		 * (size = 1 byte, lane = 0)
-		 */
-
-		*(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2) =
-		    (I2C_CNTRL2_START);
-
-		/* Wait until operation completed */
-		do {
-			/* Read I2C operation status */
-			temp = *(u32 *) (CFG_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2);
-
-			if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_START))) {
-				if (0 == (temp &
-				     (I2C_CNTRL2_I2C_CFGERR |
-				      I2C_CNTRL2_I2C_TO_ERR))
-				    ) {
-					op_status = TSI108_I2C_SUCCESS;
-
-					temp = *(u32 *) (CFG_TSI108_CSR_BASE +
-							 chan_offset +
-							 I2C_RD_DATA);
-
-					*buffer = (u8) (temp & 0xFF);
-				} else {
-					/* report HW error */
-					op_status = TSI108_I2C_IF_ERROR;
-
-					DPRINT (("I2C HW error reported: 0x%02x\n", temp));
-				}
-
-				break;
-			}
-		} while (to_count--);
-	} else {
-		op_status = TSI108_I2C_IF_BUSY;
-
-		DPRINT (("I2C Transaction start failed: 0x%02x\n", temp));
-	}
-
-	DPRINT (("I2C read_byte() status: 0x%02x\n", op_status));
-	return op_status;
-}
-
-/*
- * I2C Read interface as defined in "include/i2c.h" :
- *   chip_addr: I2C chip address, range 0..127
- *                  (to read from SPD channel EEPROM use (0xD0 ... 0xD7)
- *              NOTE: The bit 7 in the chip_addr serves as a channel select.
- *              This hack is for enabling "isdram" command on Tsi108 boards
- *              without changes to common code. Used for I2C reads only.
- *   byte_addr: Memory or register address within the chip
- *   alen:      Number of bytes to use for addr (typically 1, 2 for larger
- *              memories, 0 for register type devices with only one
- *              register)
- *   buffer:    Pointer to destination buffer for data to be read
- *   len:       How many bytes to read
- *
- *   Returns: 0 on success, not 0 on failure
- */
-
-int i2c_read (uchar chip_addr, uint byte_addr, int alen,
-		uchar * buffer, int len)
-{
-	u32 op_status = TSI108_I2C_PARAM_ERR;
-	u32 i2c_if = 0;
-
-	/* Hack to support second (SPD) I2C controller (SPD EEPROM read only).*/
-	if (0xD0 == (chip_addr & ~0x07)) {
-		i2c_if = 1;
-		chip_addr &= 0x7F;
-	}
-	/* Check for valid I2C address */
-	if (chip_addr <= 0x7F && (byte_addr + len) <= (0x01 << (alen * 8))) {
-		while (len--) {
-			op_status = i2c_read_byte(i2c_if, chip_addr, byte_addr++, buffer++);
-
-			if (TSI108_I2C_SUCCESS != op_status) {
-				DPRINT (("I2C read_byte() failed: 0x%02x (%d left)\n", op_status, len));
-
-				break;
-			}
-		}
-	}
-
-	DPRINT (("I2C read() status: 0x%02x\n", op_status));
-	return op_status;
-}
-
-/* I2C write helper function */
-
-static int i2c_write_byte (uchar chip_addr,/* I2C device address on the bus */
-			  uint byte_addr, /* Byte address within I2C device */
-			  uchar * buffer  /*  pointer to data buffer */
-			  )
-{
-	u32 temp;
-	u32 to_count = I2C_DELAY;
-	u32 op_status = TSI108_I2C_TIMEOUT_ERR;
-
-	/* Check if I2C operation is in progress */
-	temp = *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2);
-
-	if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) {
-		/* Place data into the I2C Tx Register */
-		*(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET +
-			  I2C_TX_DATA) = (u32) * buffer;
-
-		/* Set device address and operation  */
-		temp =
-		    I2C_CNTRL1_I2CWRITE | (byte_addr << 16) |
-		    ((chip_addr & 0x07) << 8) | ((chip_addr >> 3) & 0x0F);
-		*(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET +
-			  I2C_CNTRL1) = temp;
-
-		/* Issue the write command (at this moment all other parameters
-		 * are 0 (size = 1 byte, lane = 0)
-		 */
-
-		*(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET +
-			  I2C_CNTRL2) = (I2C_CNTRL2_START);
-
-		op_status = TSI108_I2C_TIMEOUT_ERR;
-
-		/* Wait until operation completed */
-		do {
-			/* Read I2C operation status */
-			temp = *(u32 *) (CFG_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2);
-
-			if (0 == (temp & (I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) {
-				if (0 == (temp &
-				     (I2C_CNTRL2_I2C_CFGERR |
-				      I2C_CNTRL2_I2C_TO_ERR))) {
-					op_status = TSI108_I2C_SUCCESS;
-				} else {
-					/* report detected HW error */
-					op_status = TSI108_I2C_IF_ERROR;
-
-					DPRINT (("I2C HW error reported: 0x%02x\n", temp));
-				}
-
-				break;
-			}
-
-		} while (to_count--);
-	} else {
-		op_status = TSI108_I2C_IF_BUSY;
-
-		DPRINT (("I2C Transaction start failed: 0x%02x\n", temp));
-	}
-
-	return op_status;
-}
-
-/*
- * I2C Write interface as defined in "include/i2c.h" :
- *   chip_addr: I2C chip address, range 0..127
- *   byte_addr: Memory or register address within the chip
- *   alen:      Number of bytes to use for addr (typically 1, 2 for larger
- *              memories, 0 for register type devices with only one
- *              register)
- *   buffer:    Pointer to data to be written
- *   len:       How many bytes to write
- *
- *   Returns: 0 on success, not 0 on failure
- */
-
-int i2c_write (uchar chip_addr, uint byte_addr, int alen, uchar * buffer,
-	      int len)
-{
-	u32 op_status = TSI108_I2C_PARAM_ERR;
-
-	/* Check for valid I2C address */
-	if (chip_addr <= 0x7F && (byte_addr + len) <= (0x01 << (alen * 8))) {
-		while (len--) {
-			op_status =
-			    i2c_write_byte (chip_addr, byte_addr++, buffer++);
-
-			if (TSI108_I2C_SUCCESS != op_status) {
-				DPRINT (("I2C write_byte() failed: 0x%02x (%d left)\n", op_status, len));
-
-				break;
-			}
-		}
-	}
-
-	return op_status;
-}
-
-/*
- * I2C interface function as defined in "include/i2c.h".
- * Probe the given I2C chip address by reading single byte from offset 0.
- * Returns 0 if a chip responded, not 0 on failure.
- */
-
-int i2c_probe (uchar chip)
-{
-	u32 tmp;
-
-	/*
-	 * Try to read the first location of the chip.
-	 * The Tsi108 HW doesn't support sending just the chip address
-	 * and checkong for an <ACK> back.
-	 */
-	return i2c_read (chip, 0, 1, (uchar *)&tmp, 1);
-}
-
-#endif
-#endif /* CONFIG_TSI108_I2C */