From: Felipe Balbi <ba...@ti.com>
that way we can ignore TX IRQs while in receiver
mode and ignore RX IRQs while in transmitter mode.
Signed-off-by: Felipe Balbi <ba...@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajy...@ti.com>
---
drivers/i2c/busses/i2c-omap.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 9f04976..00d5adc 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -196,6 +196,7 @@ struct omap_i2c_dev {
*/
u8 rev;
unsigned b_hw:1; /* bad h/w fixes */
+ unsigned receiver:1; /* true when we're in receiver
mode */
u16 iestate; /* Saved interrupt register */
u16 pscstate;
u16 scllstate;
@@ -512,6 +513,7 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adap,
INIT_COMPLETION(dev->cmd_complete);
dev->cmd_err = 0;
+ dev->receiver = !!(msg->flags & I2C_M_RD);
w = OMAP_I2C_CON_EN | OMAP_I2C_CON_MST | OMAP_I2C_CON_STT;
@@ -856,6 +858,13 @@ omap_i2c_isr(int this_irq, void *dev_id)
stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
stat &= bits;
+ /* If we're in receiver mode, ignore XDR/XRDY */
+ if (dev->receiver) {
+ stat &= ~(OMAP_I2C_STAT_XDR | OMAP_I2C_STAT_XRDY);
+ } else {
+ stat &= ~(OMAP_I2C_STAT_RDR | OMAP_I2C_STAT_RRDY);
+ }
+
if (!stat) {
/* my work here is done */
return IRQ_HANDLED;
--
1.7.5.4
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