From: Daniel Scheller <d.scheller.oss@gmail.com>
To: mchehab@kernel.org, mchehab@s-opensource.com
Cc: linux-media@vger.kernel.org
Subject: [PATCH 05/19] [media] ddbridge: report I2C bus errors
Date: Sat, 23 Jun 2018 17:36:01 +0200 [thread overview]
Message-ID: <20180623153615.27630-6-d.scheller.oss@gmail.com> (raw)
In-Reply-To: <20180623153615.27630-1-d.scheller.oss@gmail.com>
From: Daniel Scheller <d.scheller@gmx.net>
The I2C_COMMAND response reports an error in the I2C bus communication
using bit 17. Evaluate the response more thoroughly and log an error
if an I2C problem was detected.
Picked up from the upstream dddvb GIT.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
---
drivers/media/pci/ddbridge/ddbridge-i2c.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/media/pci/ddbridge/ddbridge-i2c.c b/drivers/media/pci/ddbridge/ddbridge-i2c.c
index 667340c86ea7..5a28d7611713 100644
--- a/drivers/media/pci/ddbridge/ddbridge-i2c.c
+++ b/drivers/media/pci/ddbridge/ddbridge-i2c.c
@@ -73,7 +73,10 @@ static int ddb_i2c_cmd(struct ddb_i2c *i2c, u32 adr, u32 cmd)
}
return -EIO;
}
- if (val & 0x70000)
+ val &= 0x70000;
+ if (val == 0x20000)
+ dev_err(dev->dev, "I2C bus error\n");
+ if (val)
return -EIO;
return 0;
}
--
2.16.4
next prev parent reply other threads:[~2018-06-23 15:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-23 15:35 [PATCH 00/19] dddvb/ddbridge updates as of 2018-06-23 Daniel Scheller
2018-06-23 15:35 ` [PATCH 01/19] [media] dvb-frontends/mxl5xx: add break to case DVBS2 in get_frontend() Daniel Scheller
2018-07-30 15:05 ` Mauro Carvalho Chehab
2018-06-23 15:35 ` [PATCH 02/19] [media] dvb-frontends/stv0910: cast the BER denominator shift exp to ULL Daniel Scheller
2018-06-23 15:35 ` [PATCH 03/19] [media] ddbridge: probe for LNBH25 chips before attaching Daniel Scheller
2018-06-23 15:36 ` [PATCH 04/19] [media] ddbridge: evaluate the actual link when setting up the dummy tuner Daniel Scheller
2018-06-23 15:36 ` Daniel Scheller [this message]
2018-06-23 15:36 ` [PATCH 06/19] [media] ddbridge: remove unused MDIO defines and hwinfo member Daniel Scheller
2018-06-23 15:36 ` [PATCH 07/19] [media] ddbridge: link structure access cosmetics in ddb_port_probe() Daniel Scheller
2018-06-23 15:36 ` [PATCH 08/19] [media] ddbridge: change MCI base ID and define a SX8 ID Daniel Scheller
2018-06-23 15:36 ` [PATCH 09/19] [media] ddbridge/mci: update copyright year in headers Daniel Scheller
2018-06-23 15:36 ` [PATCH 10/19] [media] ddbridge/mci: read and report signal strength and SNR Daniel Scheller
2018-06-23 15:36 ` [PATCH 11/19] [media] ddbridge/mci: rename defines and fix i/q var types Daniel Scheller
2018-06-23 15:36 ` [PATCH 12/19] [media] ddbridge/mci: extend mci_command and mci_result structs Daniel Scheller
2018-06-23 15:36 ` [PATCH 13/19] [media] ddbridge/mci: store mci type and number of ports in the hwinfo Daniel Scheller
2018-06-23 15:36 ` [PATCH 14/19] [media] ddbridge/mci: make ddb_mci_cmd() and ddb_mci_config() public Daniel Scheller
2018-06-23 15:36 ` [PATCH 15/19] [media] ddbridge/mci: split MaxSX8 specific code off to ddbridge-sx8.c Daniel Scheller
2018-06-23 15:36 ` [PATCH 16/19] [media] ddbridge/mci: add more MCI status codes, improve MCI_SUCCESS macro Daniel Scheller
2018-06-23 15:36 ` [PATCH 17/19] [media] ddbridge/sx8: disable automatic PLS code search Daniel Scheller
2018-06-23 15:36 ` [PATCH 18/19] [media] ddbridge/sx8: enable modulation selection in set_parameters() Daniel Scheller
2018-06-23 15:36 ` [PATCH 19/19] [media] ddbridge/mci: add SX8 I/Q mode remark and remove DIAG CMD defines Daniel Scheller
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