diff mbox series

i2c: aspeed: do not mask SLAVE_MATCH

Message ID 20220602054842.122271-1-its@irrelevant.dk
State Rejected
Headers show
Series i2c: aspeed: do not mask SLAVE_MATCH | expand

Commit Message

Klaus Jensen June 2, 2022, 5:48 a.m. UTC 
From: Klaus Jensen <k.jensen@samsung.com>

When commit f9eb91350bb2 ("i2c: aspeed: added slave support for Aspeed
I2C driver") added slave mode support, the SLAVE_MATCH interrupt bit
(bit 7) was not added to INTR_ALL and so will never be set by the Aspeed
I2C controller.

Fixes: f9eb91350bb2 ("i2c: aspeed: added slave support for Aspeed I2C driver")
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
---
I am working on slave mode in QEMU and noticed that the device would not
generate the SLAVE_ADDR_RX_MATCH interrupt. This patch fixes it, but I
do not have a spec sheet on the Aspeed, so I am not sure if this is the
intended behavior?

 drivers/i2c/busses/i2c-aspeed.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Klaus Jensen June 3, 2022, 5:49 a.m. UTC | #1 
On Jun  2 07:48, Klaus Jensen wrote:
> From: Klaus Jensen <k.jensen@samsung.com>
> 
> When commit f9eb91350bb2 ("i2c: aspeed: added slave support for Aspeed
> I2C driver") added slave mode support, the SLAVE_MATCH interrupt bit
> (bit 7) was not added to INTR_ALL and so will never be set by the Aspeed
> I2C controller.
> 
> Fixes: f9eb91350bb2 ("i2c: aspeed: added slave support for Aspeed I2C driver")
> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
> ---
> I am working on slave mode in QEMU and noticed that the device would not
> generate the SLAVE_ADDR_RX_MATCH interrupt. This patch fixes it, but I
> do not have a spec sheet on the Aspeed, so I am not sure if this is the
> intended behavior?
> 
>  drivers/i2c/busses/i2c-aspeed.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c
> index 771e53d3d197..7f432babcd72 100644
> --- a/drivers/i2c/busses/i2c-aspeed.c
> +++ b/drivers/i2c/busses/i2c-aspeed.c
> @@ -86,6 +86,7 @@
>  #define ASPEED_I2CD_INTR_ALL						       \
>  		(ASPEED_I2CD_INTR_SDA_DL_TIMEOUT |			       \
>  		 ASPEED_I2CD_INTR_BUS_RECOVER_DONE |			       \
> +		 ASPEED_I2CD_INTR_SLAVE_MATCH |				       \
>  		 ASPEED_I2CD_INTR_SCL_TIMEOUT |				       \
>  		 ASPEED_I2CD_INTR_ABNORMAL |				       \
>  		 ASPEED_I2CD_INTR_NORMAL_STOP |				       \
> -- 
> 2.36.1
> 

I've been informed that SLAVE_MATCH should always be generated,
regardless of INTR_CTRL, so please ignore this patch.
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c
index 771e53d3d197..7f432babcd72 100644
--- a/drivers/i2c/busses/i2c-aspeed.c
+++ b/drivers/i2c/busses/i2c-aspeed.c
@@ -86,6 +86,7 @@ 
 #define ASPEED_I2CD_INTR_ALL						       \
 		(ASPEED_I2CD_INTR_SDA_DL_TIMEOUT |			       \
 		 ASPEED_I2CD_INTR_BUS_RECOVER_DONE |			       \
+		 ASPEED_I2CD_INTR_SLAVE_MATCH |				       \
 		 ASPEED_I2CD_INTR_SCL_TIMEOUT |				       \
 		 ASPEED_I2CD_INTR_ABNORMAL |				       \
 		 ASPEED_I2CD_INTR_NORMAL_STOP |				       \