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imx_serial: Generate interrupt on receive data ready if enabled

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Generate an interrupt if USR2_RDR and UCR4_DREN are both set.

Signed-off-by: Hans-Erik Floryd <hans-erik.floryd@rt-labs.com>
Message-id: 1534341354-11956-1-git-send-email-hans-erik.floryd@rt-labs.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Hans-Erik Floryd 2018-08-20 11:24:31 +01:00 committed by Peter Maydell
parent 84be3ef1de
commit 3c54cf7705
2 changed files with 3 additions and 1 deletions
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3
hw/char/imx_serial.c
View File

@ -74,8 +74,9 @@ static void imx_update(IMXSerialState *s)
mask = (s->ucr1 & UCR1_TXMPTYEN) ? USR2_TXFE : 0;
/*
* TCEN and TXDC are both bit 3
* RDR and DREN are both bit 0
*/
mask |= s->ucr4 & UCR4_TCEN;
mask |= s->ucr4 & (UCR4_TCEN | UCR4_DREN);
usr2 = s->usr2 & mask;

1
include/hw/char/imx_serial.h
View File

@ -68,6 +68,7 @@
#define UCR2_RXEN (1<<1) /* Receiver enable */
#define UCR2_SRST (1<<0) /* Reset complete */
#define UCR4_DREN BIT(0) /* Receive Data Ready interrupt enable */
#define UCR4_TCEN BIT(3) /* TX complete interrupt enable */
#define UTS1_TXEMPTY (1<<6)