From a341f649d75f7b6ce5e7fe39c0e9d1c9585558dc Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.m@jp.panasonic.com>
Date: Mon, 19 Aug 2013 15:01:23 +0900
Subject: [PATCH] drivers: s3c44b0_i2c: delete an unused driver

Since commit 5dc5f36 removed B2 board support,
there are no boards enabling s3c44b0_i2c.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Andrea Scian <andrea.scian@dave-tech.it>
Acked-by: Heiko Schocher <hs@denx.de>
---
 drivers/i2c/Makefile      |   1 -
 drivers/i2c/s3c44b0_i2c.c | 299 ----------------------------------------------
 2 files changed, 300 deletions(-)
 delete mode 100644 drivers/i2c/s3c44b0_i2c.c

diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 37ccbd1..df3092e 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -21,7 +21,6 @@ COBJS-$(CONFIG_DRIVER_OMAP24XX_I2C) += omap24xx_i2c.o
 COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += omap24xx_i2c.o
 COBJS-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o
 COBJS-$(CONFIG_DRIVER_S3C24X0_I2C) += s3c24x0_i2c.o
-COBJS-$(CONFIG_S3C44B0_I2C) += s3c44b0_i2c.o
 COBJS-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
 COBJS-$(CONFIG_U8500_I2C) += u8500_i2c.o
 COBJS-$(CONFIG_SH_I2C) += sh_i2c.o
diff --git a/drivers/i2c/s3c44b0_i2c.c b/drivers/i2c/s3c44b0_i2c.c
deleted file mode 100644
index 8445e01..0000000
--- a/drivers/i2c/s3c44b0_i2c.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/*
- * (C) Copyright 2004
- * DAVE Srl
- * http://www.dave-tech.it
- * http://www.wawnet.biz
- * mailto:info@wawnet.biz
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <command.h>
-#include <asm/hardware.h>
-
-/*
- * Initialization, must be called once on start up, may be called
- * repeatedly to change the speed and slave addresses.
- */
-void i2c_init(int speed, int slaveaddr)
-{
-	/*
-		setting up I2C support
-	*/
-	unsigned int save_F,save_PF,rIICCON,rPCONA,rPDATA,rPCONF,rPUPF;
-
-	save_F = PCONF;
-	save_PF = PUPF;
-
-	rPCONF = ((save_F & ~(0xF))| 0xa);
-	rPUPF = (save_PF | 0x3);
-	PCONF = rPCONF; /*PF0:IICSCL, PF1:IICSDA*/
-	PUPF = rPUPF; /* Disable pull-up */
-
-	/* Configuring pin for WC pin of EEprom */
-	rPCONA = PCONA;
-	rPCONA &= ~(1<<9);
-	PCONA = rPCONA;
-
-	rPDATA = PDATA;
-	rPDATA &= ~(1<<9);
-	PDATA = rPDATA;
-
-	/*
-		Enable ACK, IICCLK=MCLK/16, enable interrupt
-		75MHz/16/(12+1) = 390625 Hz
-	*/
-	rIICCON=(1<<7)|(0<<6)|(1<<5)|(0xC);
-	IICCON = rIICCON;
-
-	IICADD = slaveaddr;
-}
-
-/*
- * Probe the given I2C chip address.  Returns 0 if a chip responded,
- * not 0 on failure.
- */
-int i2c_probe(uchar chip)
-{
-	/*
-		not implemented
-	*/
-
-	printf("i2c_probe chip %d\n", (int) chip);
-	return -1;
-}
-
-/*
- * Read/Write interface:
- *   chip:    I2C chip address, range 0..127
- *   addr:    Memory (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:  Where to read/write the data
- *   len:     How many bytes to read/write
- *
- *   Returns: 0 on success, not 0 on failure
- */
-
-#define S3C44B0X_rIIC_INTPEND               (1<<4)
-#define S3C44B0X_rIIC_LAST_RECEIV_BIT       (1<<0)
-#define S3C44B0X_rIIC_INTERRUPT_ENABLE      (1<<5)
-#define S3C44B0_IIC_TIMEOUT 100
-
-int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
-{
-
-	int k, j, temp;
-	u32 rIICSTAT;
-
-	/*
-		send the device offset
-	*/
-
-	rIICSTAT = 0xD0;
-	IICSTAT = rIICSTAT;
-
-	IICDS = chip;	/* this is a write operation... */
-
-	rIICSTAT |= (1<<5);
-	IICSTAT = rIICSTAT;
-
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-		return -1;
-
-	/* wait and check ACK */
-	temp = IICSTAT;
-	if ((temp & S3C44B0X_rIIC_LAST_RECEIV_BIT) == S3C44B0X_rIIC_LAST_RECEIV_BIT )
-		return -1;
-
-	IICDS = addr;
-	IICCON = IICCON & ~(S3C44B0X_rIIC_INTPEND);
-
-	/* wait and check ACK */
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-		return -1;
-
-	temp = IICSTAT;
-	if ((temp & S3C44B0X_rIIC_LAST_RECEIV_BIT) == S3C44B0X_rIIC_LAST_RECEIV_BIT )
-		return -1;
-
-	/*
-		now we can start with the read operation...
-	*/
-
-	IICDS = chip | 0x01;	/* this is a read operation... */
-
-	rIICSTAT = 0x90; /*master recv*/
-	rIICSTAT |= (1<<5);
-	IICSTAT = rIICSTAT;
-
-	IICCON = IICCON & ~(S3C44B0X_rIIC_INTPEND);
-
-	/* wait and check ACK */
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-		return -1;
-
-	temp = IICSTAT;
-	if ((temp & S3C44B0X_rIIC_LAST_RECEIV_BIT) == S3C44B0X_rIIC_LAST_RECEIV_BIT )
-		return -1;
-
-	for (j=0; j<len-1; j++) {
-
-	/*clear pending bit to resume */
-
-	temp = IICCON & ~(S3C44B0X_rIIC_INTPEND);
-	IICCON = temp;
-
-	/* wait and check ACK */
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-		return -1;
-
-
-		buffer[j] = IICDS; /*save readed data*/
-
-    } /*end for(j)*/
-
-	/*
-		reading the last data
-		unset ACK generation
-	*/
-	temp = IICCON & ~(S3C44B0X_rIIC_INTPEND | (1<<7));
-	IICCON = temp;
-
-	/* wait but NOT check ACK */
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-		return -1;
-
-	buffer[j] = IICDS; /*save readed data*/
-
-	rIICSTAT = 0x90; /*master recv*/
-
-	/* Write operation Terminate sending STOP */
-	IICSTAT = rIICSTAT;
-	/*Clear Int Pending Bit to RESUME*/
-	temp = IICCON;
-	IICCON = temp & (~S3C44B0X_rIIC_INTPEND);
-
-	IICCON = IICCON | (1<<7);	/*restore ACK generation*/
-
-	return 0;
-}
-
-int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
-{
-	int j, k;
-	u32 rIICSTAT, temp;
-
-
-	/*
-		send the device offset
-	*/
-
-	rIICSTAT = 0xD0;
-	IICSTAT = rIICSTAT;
-
-	IICDS = chip;	/* this is a write operation... */
-
-	rIICSTAT |= (1<<5);
-	IICSTAT = rIICSTAT;
-
-	IICCON = IICCON & ~(S3C44B0X_rIIC_INTPEND);
-
-	/* wait and check ACK */
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-		return -1;
-
-	temp = IICSTAT;
-	if ((temp & S3C44B0X_rIIC_LAST_RECEIV_BIT) == S3C44B0X_rIIC_LAST_RECEIV_BIT )
-		return -1;
-
-	IICDS = addr;
-	IICCON = IICCON & ~(S3C44B0X_rIIC_INTPEND);
-
-	/* wait and check ACK */
-	for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-		temp = IICCON;
-		if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-		break;
-		udelay(2000);
-	}
-	if (k==S3C44B0_IIC_TIMEOUT)
-	  return -1;
-
-	temp = IICSTAT;
-	if ((temp & S3C44B0X_rIIC_LAST_RECEIV_BIT) == S3C44B0X_rIIC_LAST_RECEIV_BIT )
-		return -1;
-
-	/*
-		now we can start with the read write operation
-	*/
-	for (j=0; j<len; j++) {
-
-		IICDS = buffer[j]; /*prerare data to write*/
-
-		/*clear pending bit to resume*/
-
-		temp = IICCON & ~(S3C44B0X_rIIC_INTPEND);
-		IICCON = temp;
-
-		/* wait but NOT check ACK */
-		for(k=0; k<S3C44B0_IIC_TIMEOUT; k++) {
-			temp = IICCON;
-			if( (temp & S3C44B0X_rIIC_INTPEND) == S3C44B0X_rIIC_INTPEND)
-			break;
-
-			udelay(2000);
-		}
-
-		if (k==S3C44B0_IIC_TIMEOUT)
-			return -1;
-
-	} /* end for(j) */
-
-	/* sending stop to terminate */
-	rIICSTAT = 0xD0;  /*master send*/
-	IICSTAT = rIICSTAT;
-	/*Clear Int Pending Bit to RESUME*/
-	temp = IICCON;
-	IICCON = temp & (~S3C44B0X_rIIC_INTPEND);
-
-	return 0;
-}
-- 
2.7.4