From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org
Cc: "Corey Minyard" <cminyard@mvista.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"KONRAD Frederic" <frederic.konrad@adacore.com>,
qemu-arm@nongnu.org, qemu-ppc@nongnu.org
Subject: [PATCH v4 07/15] hw/misc/auxbus: Fix MOT/classic I2C mode
Date: Wed, 16 Jun 2021 23:42:46 +0200 [thread overview]
Message-ID: <20210616214254.2647796-8-f4bug@amsat.org> (raw)
In-Reply-To: <20210616214254.2647796-1-f4bug@amsat.org>
Since its introduction in commit 6fc7f77fd2 i2c_start_transfer()
uses incorrectly the direction of the transfer (the last argument
is called 'is_recv'). Fix by inverting the argument, we now have
is_recv = !is_write.
Fixes: 6fc7f77fd2 ("introduce aux-bus")
Reported-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
hw/misc/auxbus.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/hw/misc/auxbus.c b/hw/misc/auxbus.c
index 6c099ae2a2d..148b070ce4a 100644
--- a/hw/misc/auxbus.c
+++ b/hw/misc/auxbus.c
@@ -139,7 +139,7 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
i2c_end_transfer(i2c_bus);
}
- if (i2c_start_transfer(i2c_bus, address, is_write)) {
+ if (i2c_start_transfer(i2c_bus, address, !is_write)) {
ret = AUX_I2C_NACK;
break;
}
@@ -170,7 +170,7 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
/*
* No transactions started..
*/
- if (i2c_start_transfer(i2c_bus, address, is_write)) {
+ if (i2c_start_transfer(i2c_bus, address, !is_write)) {
break;
}
} else if ((address != bus->last_i2c_address) ||
@@ -179,7 +179,7 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
* Transaction started but we need to restart..
*/
i2c_end_transfer(i2c_bus);
- if (i2c_start_transfer(i2c_bus, address, is_write)) {
+ if (i2c_start_transfer(i2c_bus, address, !is_write)) {
break;
}
}
--
2.31.1
next prev parent reply other threads:[~2021-06-16 21:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 21:42 [PATCH v4 00/15] hw/i2c: Remove confusing i2c_send_recv() API Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 01/15] hw/input/lm832x: Move lm832x_key_event() declaration to "lm832x.h" Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 02/15] hw/input/lm832x: Define TYPE_LM8323 in public header Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 03/15] hw/display/sm501: Simplify sm501_i2c_write() logic Philippe Mathieu-Daudé
2021-06-16 23:15 ` BALATON Zoltan
2021-06-16 21:42 ` [PATCH v4 04/15] hw/display/sm501: Replace i2c_send_recv() by i2c_recv() & i2c_send() Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 05/15] hw/i2c/ppc4xx_i2c: Add reference to datasheet Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 06/15] hw/i2c/ppc4xx_i2c: Replace i2c_send_recv() by i2c_recv() & i2c_send() Philippe Mathieu-Daudé
2021-06-16 21:42 ` Philippe Mathieu-Daudé [this message]
2021-06-16 21:42 ` [PATCH v4 08/15] hw/misc/auxbus: Explode READ_I2C / WRITE_I2C_MOT cases Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 09/15] hw/misc/auxbus: Replace 'is_write' boolean by its value Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 10/15] hw/misc/auxbus: Replace i2c_send_recv() by i2c_recv() & i2c_send() Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 11/15] hw/i2c: Remove confusing i2c_send_recv() Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 12/15] hw/i2c: Rename i2c_set_slave_address() -> i2c_slave_set_address() Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 13/15] hw/i2c: Make i2c_start_transfer() direction argument a boolean Philippe Mathieu-Daudé
2021-06-16 21:42 ` [PATCH v4 14/15] hw/i2c: Extract i2c_do_start_transfer() from i2c_start_transfer() Philippe Mathieu-Daudé
2021-06-17 0:21 ` Richard Henderson
2021-06-16 21:42 ` [PATCH v4 15/15] hw/i2c: Introduce i2c_start_recv() and i2c_start_send() Philippe Mathieu-Daudé
2021-06-17 0:23 ` Richard Henderson
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