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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-07 16:29:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-07 16:29:29 -0700
commitf1bb20a8365f6753e0f7b6e94981ca2b662bae13 (patch)
treeda5c2299763087c754d8a801f868ac9aaed82ab3 /drivers/i2c
parent90c69064c903f0993c7268c49670ad1f32030942 (diff)
parent69f81e86540716e68e98e401bb91f339d6a0d31f (diff)
Merge branch 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux
* 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux: i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly i2c-s3c2410: Remove useless break code i2c-s3c2410: Fix typo 'i2s' -> 'i2c' i2c: tegra: Assign unused slave address
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-bfin-twi.c8
-rw-r--r--drivers/i2c/busses/i2c-s3c2410.c7
-rw-r--r--drivers/i2c/busses/i2c-tegra.c8
3 files changed, 17 insertions, 6 deletions
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 52b545a795f..cbc98aea5b0 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -193,7 +193,13 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
return;
}
if (twi_int_status & MCOMP) {
- if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
+ if ((read_MASTER_CTL(iface) & MEN) == 0 &&
+ (iface->cur_mode == TWI_I2C_MODE_REPEAT ||
+ iface->cur_mode == TWI_I2C_MODE_COMBINED)) {
+ iface->result = -1;
+ write_INT_MASK(iface, 0);
+ write_MASTER_CTL(iface, 0);
+ } else if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
if (iface->readNum == 0) {
/* set the read number to 1 and ask for manual
* stop in block combine mode
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 6c00c107ebf..f84a63c6dd9 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -248,12 +248,12 @@ static inline int is_msgend(struct s3c24xx_i2c *i2c)
return i2c->msg_ptr >= i2c->msg->len;
}
-/* i2s_s3c_irq_nextbyte
+/* i2c_s3c_irq_nextbyte
*
* process an interrupt and work out what to do
*/
-static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
+static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
{
unsigned long tmp;
unsigned char byte;
@@ -264,7 +264,6 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
case STATE_IDLE:
dev_err(i2c->dev, "%s: called in STATE_IDLE\n", __func__);
goto out;
- break;
case STATE_STOP:
dev_err(i2c->dev, "%s: called in STATE_STOP\n", __func__);
@@ -444,7 +443,7 @@ static irqreturn_t s3c24xx_i2c_irq(int irqno, void *dev_id)
/* pretty much this leaves us with the fact that we've
* transmitted or received whatever byte we last sent */
- i2s_s3c_irq_nextbyte(i2c, status);
+ i2c_s3c_irq_nextbyte(i2c, status);
out:
return IRQ_HANDLED;
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 4d9319665e3..fb3b4f8f815 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -40,8 +40,10 @@
#define I2C_CNFG_NEW_MASTER_FSM (1<<11)
#define I2C_STATUS 0x01C
#define I2C_SL_CNFG 0x020
+#define I2C_SL_CNFG_NACK (1<<1)
#define I2C_SL_CNFG_NEWSL (1<<2)
#define I2C_SL_ADDR1 0x02c
+#define I2C_SL_ADDR2 0x030
#define I2C_TX_FIFO 0x050
#define I2C_RX_FIFO 0x054
#define I2C_PACKET_TRANSFER_STATUS 0x058
@@ -337,7 +339,11 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
if (!i2c_dev->is_dvc) {
u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG);
- i2c_writel(i2c_dev, sl_cfg | I2C_SL_CNFG_NEWSL, I2C_SL_CNFG);
+ sl_cfg |= I2C_SL_CNFG_NACK | I2C_SL_CNFG_NEWSL;
+ i2c_writel(i2c_dev, sl_cfg, I2C_SL_CNFG);
+ i2c_writel(i2c_dev, 0xfc, I2C_SL_ADDR1);
+ i2c_writel(i2c_dev, 0x00, I2C_SL_ADDR2);
+
}
val = 7 << I2C_FIFO_CONTROL_TX_TRIG_SHIFT |