From: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
To: Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com,
Wolfram Sang <wsa@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Brendan Higgins <brendanhiggins@google.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Lori Hikichi <lori.hikichi@broadcom.com>,
Dhananjay Phadke <dphadke@linux.microsoft.com>,
linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Subject: [PATCH v1 1/6] i2c: iproc: handle Master aborted error
Date: Sun, 11 Oct 2020 23:52:49 +0530 [thread overview]
Message-ID: <20201011182254.17776-2-rayagonda.kokatanur@broadcom.com> (raw)
In-Reply-To: <20201011182254.17776-1-rayagonda.kokatanur@broadcom.com>
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Handle Master aborted error by flushing tx and rx fifo
and reinitializing the hw.
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
---
drivers/i2c/busses/i2c-bcm-iproc.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-bcm-iproc.c b/drivers/i2c/busses/i2c-bcm-iproc.c
index d8295b1c379d..834a98caeada 100644
--- a/drivers/i2c/busses/i2c-bcm-iproc.c
+++ b/drivers/i2c/busses/i2c-bcm-iproc.c
@@ -93,6 +93,7 @@
#define S_CMD_STATUS_MASK 0x07
#define S_CMD_STATUS_SUCCESS 0x0
#define S_CMD_STATUS_TIMEOUT 0x5
+#define S_CMD_STATUS_MASTER_ABORT 0x7
#define IE_OFFSET 0x38
#define IE_M_RX_FIFO_FULL_SHIFT 31
@@ -311,9 +312,10 @@ static void bcm_iproc_i2c_check_slave_status(
return;
val = (val >> S_CMD_STATUS_SHIFT) & S_CMD_STATUS_MASK;
- if (val == S_CMD_STATUS_TIMEOUT) {
- dev_err(iproc_i2c->device, "slave random stretch time timeout\n");
-
+ if (val == S_CMD_STATUS_TIMEOUT || val == S_CMD_STATUS_MASTER_ABORT) {
+ dev_err(iproc_i2c->device, (val == S_CMD_STATUS_TIMEOUT) ?
+ "slave random stretch time timeout\n" :
+ "Master aborted read transaction\n");
/* re-initialize i2c for recovery */
bcm_iproc_i2c_enable_disable(iproc_i2c, false);
bcm_iproc_i2c_slave_init(iproc_i2c, true);
--
2.17.1
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next prev parent reply other threads:[~2020-10-11 18:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-11 18:22 [PATCH v1 0/6] fix iproc driver to handle master read request Rayagonda Kokatanur
2020-10-11 18:22 ` Rayagonda Kokatanur [this message]
2020-10-23 17:14 ` [PATCH v1 1/6] i2c: iproc: handle Master aborted error Ray Jui
2020-10-11 18:22 ` [PATCH v1 2/6] i2c: iproc: handle only slave interrupts which are enabled Rayagonda Kokatanur
2020-10-23 17:18 ` Ray Jui
2020-10-11 18:22 ` [PATCH v1 3/6] i2c: iproc: update slave isr mask (ISR_MASK_SLAVE) Rayagonda Kokatanur
2020-10-23 17:19 ` Ray Jui
2020-10-11 18:22 ` [PATCH v1 4/6] i2c: iproc: fix typo in slave_isr function Rayagonda Kokatanur
2020-10-23 17:20 ` Ray Jui
2020-10-26 13:52 ` Rayagonda Kokatanur
2020-10-11 18:22 ` [PATCH v1 5/6] i2c: iproc: handle master read request Rayagonda Kokatanur
2020-10-14 3:20 ` Dhananjay Phadke
2020-10-14 9:12 ` Rayagonda Kokatanur
[not found] ` <CAHO=5PEtoJrFEPin0hH19Ubs9Zmhxiay4jSGAhXBFE=ft=+CYg@mail.gmail.com>
2020-10-23 17:26 ` Ray Jui
2020-10-26 13:55 ` Rayagonda Kokatanur
2020-10-11 18:22 ` [PATCH v1 6/6] i2c: iproc: handle rx fifo full interrupt Rayagonda Kokatanur
2020-10-12 22:03 ` Dhananjay Phadke
2020-10-23 17:42 ` Ray Jui
2020-10-26 15:13 ` Rayagonda Kokatanur
2020-10-27 0:36 ` Ray Jui
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