From 66839773a82cb56ebeb2b99322151f8a57a30efb Mon Sep 17 00:00:00 2001
From: =?utf8?q?Vincent=20Stehl=C3=A9?= <v-stehle@ti.com>
Date: Mon, 3 Dec 2012 06:07:21 +0000
Subject: [PATCH] omap24xx_i2c: Handle OMAP5 like OMAP2,3,4
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OMAP5 has 8b i2c data register field, like OMAP2, 3 and 4. Handle in the same
way. This fixes the following error on OMAP5:
OMAP5430 EVM # mmc rescan
timed out in wait_for_bb: I2C_STAT=1410
twl6035: could not turn on LDO9.
Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
---
drivers/i2c/omap24xx_i2c.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index 094305fdf9..af454f901c 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -179,7 +179,8 @@ static int i2c_read_byte(u8 devaddr, u16 regoffset, u8 alen, u8 *value)
if (status & I2C_STAT_XRDY) {
w = tmpbuf[i++];
#if !(defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \
- defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX))
+ defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX) || \
+ defined(CONFIG_OMAP54XX))
w |= tmpbuf[i++] << 8;
#endif
writew(w, &i2c_base->data);
@@ -209,7 +210,8 @@ static int i2c_read_byte(u8 devaddr, u16 regoffset, u8 alen, u8 *value)
}
if (status & I2C_STAT_RRDY) {
#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \
- defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX)
+ defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX) || \
+ defined(CONFIG_OMAP54XX)
*value = readb(&i2c_base->data);
#else
*value = readw(&i2c_base->data);
@@ -239,7 +241,8 @@ static void flush_fifo(void)
stat = readw(&i2c_base->stat);
if (stat == I2C_STAT_RRDY) {
#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \
- defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX)
+ defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX) || \
+ defined(CONFIG_OMAP54XX)
readb(&i2c_base->data);
#else
readw(&i2c_base->data);
@@ -289,7 +292,8 @@ int i2c_probe(uchar chip)
if (status & I2C_STAT_RRDY) {
res = 0;
#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \
- defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX)
+ defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX) || \
+ defined(CONFIG_OMAP54XX)
readb(&i2c_base->data);
#else
readw(&i2c_base->data);
@@ -376,7 +380,8 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
if (status & I2C_STAT_XRDY) {
w = (i < 0) ? tmpbuf[2+i] : buffer[i];
#if !(defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \
- defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX))
+ defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX) || \
+ defined(CONFIG_OMAP54XX))
w |= ((++i < 0) ? tmpbuf[2+i] : buffer[i]) << 8;
#endif
writew(w, &i2c_base->data);
--
2.39.5