drivers/i2c : move i2c drivers to drivers/i2c

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

1 files changed, 0 insertions, 281 deletions

diff --git a/drivers/omap1510_i2c.c b/drivers/omap1510_i2c.c
deleted file mode 100644
index 04400fb..0000000
--- a/drivers/omap1510_i2c.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * Basic I2C functions
- *
- * Copyright (c) 2003 Texas Instruments
- *
- * This package is free software;  you can redistribute it and/or
- * modify it under the terms of the license found in the file
- * named COPYING that should have accompanied this file.
- *
- * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Author: Jian Zhang jzhang@ti.com, Texas Instruments
- *
- * Copyright (c) 2003 Wolfgang Denk, wd@denx.de
- * Rewritten to fit into the current U-Boot framework
- *
- */
-
-#include <common.h>
-
-#ifdef CONFIG_DRIVER_OMAP1510_I2C
-
-static void wait_for_bb (void);
-static u16 wait_for_pin (void);
-
-void i2c_init (int speed, int slaveadd)
-{
-	u16 scl;
-
-	if (inw (I2C_CON) & I2C_CON_EN) {
-		outw (0, I2C_CON);
-		udelay (5000);
-	}
-
-	/* 12Mhz I2C module clock */
-	outw (0, I2C_PSC);
-	outw (I2C_CON_EN, I2C_CON);
-	outw (0, I2C_SYSTEST);
-	/* have to enable intrrupts or OMAP i2c module doesn't work */
-	outw (I2C_IE_XRDY_IE | I2C_IE_RRDY_IE | I2C_IE_ARDY_IE |
-	      I2C_IE_NACK_IE | I2C_IE_AL_IE, I2C_IE);
-	scl = (12000000 / 2) / speed - 6;
-	outw (scl, I2C_SCLL);
-	outw (scl, I2C_SCLH);
-	/* own address */
-	outw (slaveadd, I2C_OA);
-	outw (0, I2C_CNT);
-	udelay (1000);
-}
-
-static int i2c_read_byte (u8 devaddr, u8 regoffset, u8 * value)
-{
-	int i2c_error = 0;
-	u16 status;
-
-	/* wait until bus not busy */
-	wait_for_bb ();
-
-	/* one byte only */
-	outw (1, I2C_CNT);
-	/* set slave address */
-	outw (devaddr, I2C_SA);
-	/* no stop bit needed here */
-	outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX, I2C_CON);
-
-	status = wait_for_pin ();
-
-	if (status & I2C_STAT_XRDY) {
-		/* Important: have to use byte access */
-		*(volatile u8 *) (I2C_DATA) = regoffset;
-		udelay (20000);
-		if (inw (I2C_STAT) & I2C_STAT_NACK) {
-			i2c_error = 1;
-		}
-	} else {
-		i2c_error = 1;
-	}
-
-	if (!i2c_error) {
-		/* free bus, otherwise we can't use a combined transction */
-		outw (0, I2C_CON);
-		while (inw (I2C_STAT) || (inw (I2C_CON) & I2C_CON_MST)) {
-			udelay (10000);
-			/* Have to clear pending interrupt to clear I2C_STAT */
-			inw (I2C_IV);
-		}
-
-		wait_for_bb ();
-		/* set slave address */
-		outw (devaddr, I2C_SA);
-		/* read one byte from slave */
-		outw (1, I2C_CNT);
-		/* need stop bit here */
-		outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP,
-		      I2C_CON);
-
-		status = wait_for_pin ();
-		if (status & I2C_STAT_RRDY) {
-			*value = inw (I2C_DATA);
-			udelay (20000);
-		} else {
-			i2c_error = 1;
-		}
-
-		if (!i2c_error) {
-			outw (I2C_CON_EN, I2C_CON);
-			while (inw (I2C_STAT)
-			       || (inw (I2C_CON) & I2C_CON_MST)) {
-				udelay (10000);
-				inw (I2C_IV);
-			}
-		}
-	}
-
-	return i2c_error;
-}
-
-static int i2c_write_byte (u8 devaddr, u8 regoffset, u8 value)
-{
-	int i2c_error = 0;
-	u16 status;
-
-	/* wait until bus not busy */
-	wait_for_bb ();
-
-	/* two bytes */
-	outw (2, I2C_CNT);
-	/* set slave address */
-	outw (devaddr, I2C_SA);
-	/* stop bit needed here */
-	outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX |
-	      I2C_CON_STP, I2C_CON);
-
-	/* wait until state change */
-	status = wait_for_pin ();
-
-	if (status & I2C_STAT_XRDY) {
-		/* send out two bytes */
-		outw ((value << 8) + regoffset, I2C_DATA);
-		/* must have enough delay to allow BB bit to go low */
-		udelay (30000);
-		if (inw (I2C_STAT) & I2C_STAT_NACK) {
-			i2c_error = 1;
-		}
-	} else {
-		i2c_error = 1;
-	}
-
-	if (!i2c_error) {
-		outw (I2C_CON_EN, I2C_CON);
-		while (inw (I2C_STAT) || (inw (I2C_CON) & I2C_CON_MST)) {
-			udelay (1000);
-			/* have to read to clear intrrupt */
-			inw (I2C_IV);
-		}
-	}
-
-	return i2c_error;
-}
-
-int i2c_probe (uchar chip)
-{
-	int res = 1;
-
-	if (chip == inw (I2C_OA)) {
-		return res;
-	}
-
-	/* wait until bus not busy */
-	wait_for_bb ();
-
-	/* try to read one byte */
-	outw (1, I2C_CNT);
-	/* set slave address */
-	outw (chip, I2C_SA);
-	/* stop bit needed here */
-	outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP, I2C_CON);
-	/* enough delay for the NACK bit set */
-	udelay (2000);
-	if (!(inw (I2C_STAT) & I2C_STAT_NACK)) {
-		res = 0;
-	} else {
-		outw (inw (I2C_CON) | I2C_CON_STP, I2C_CON);
-		udelay (20);
-		wait_for_bb ();
-	}
-
-	return res;
-}
-
-int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len)
-{
-	int i;
-
-	if (alen > 1) {
-		printf ("I2C read: addr len %d not supported\n", alen);
-		return 1;
-	}
-
-	if (addr + len > 256) {
-		printf ("I2C read: address out of range\n");
-		return 1;
-	}
-
-	for (i = 0; i < len; i++) {
-		if (i2c_read_byte (chip, addr + i, &buffer[i])) {
-			printf ("I2C read: I/O error\n");
-			i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
-			return 1;
-		}
-	}
-
-	return 0;
-}
-
-int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
-{
-	int i;
-
-	if (alen > 1) {
-		printf ("I2C read: addr len %d not supported\n", alen);
-		return 1;
-	}
-
-	if (addr + len > 256) {
-		printf ("I2C read: address out of range\n");
-		return 1;
-	}
-
-	for (i = 0; i < len; i++) {
-		if (i2c_write_byte (chip, addr + i, buffer[i])) {
-			printf ("I2C read: I/O error\n");
-			i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
-			return 1;
-		}
-	}
-
-	return 0;
-}
-
-static void wait_for_bb (void)
-{
-	int timeout = 10;
-
-	while ((inw (I2C_STAT) & I2C_STAT_BB) && timeout--) {
-		inw (I2C_IV);
-		udelay (1000);
-	}
-
-	if (timeout <= 0) {
-		printf ("timed out in wait_for_bb: I2C_STAT=%x\n",
-			inw (I2C_STAT));
-	}
-}
-
-static u16 wait_for_pin (void)
-{
-	u16 status, iv;
-	int timeout = 10;
-
-	do {
-		udelay (1000);
-		status = inw (I2C_STAT);
-		iv = inw (I2C_IV);
-	} while (!iv &&
-		 !(status &
-		   (I2C_STAT_ROVR | I2C_STAT_XUDF | I2C_STAT_XRDY |
-		    I2C_STAT_RRDY | I2C_STAT_ARDY | I2C_STAT_NACK |
-		    I2C_STAT_AL)) && timeout--);
-
-	if (timeout <= 0) {
-		printf ("timed out in wait_for_pin: I2C_STAT=%x\n",
-			inw (I2C_STAT));
-	}
-
-	return status;
-}
-
-#endif /* CONFIG_DRIVER_OMAP1510_I2C */