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path: root/drivers/fsi/fsi-occ.c
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2021-07-20fsi: Add missing MODULE_DEVICE_TABLEZou Wei1-0/+1
[ Upstream commit 19a52178125c1e8b84444d85f2ce34c0964b4a91 ] This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> Link: https://lore.kernel.org/r/1620896249-52769-1-git-send-email-zou_wei@huawei.com Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14fsi: occ: Don't accept response from un-initialized OCCEddie James1-0/+1
[ Upstream commit 8a4659be08576141f47d47d94130eb148cb5f0df ] If the OCC is not initialized and responds as such, the driver should continue waiting for a valid response until the timeout expires. Signed-off-by: Eddie James <eajames@linux.ibm.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Fixes: 7ed98dddb764 ("fsi: Add On-Chip Controller (OCC) driver") Link: https://lore.kernel.org/r/20210209171235.20624-2-eajames@linux.ibm.com Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-10fsi: fsi-occ: fix return value check in occ_probe()Xu Wang1-1/+1
In case of error, the function platform_device_register_full() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-07-03OCC: FSI and hwmon: Add sequence numberingEddie James1-3/+12
Sequence numbering of the commands submitted to the OCC is required by the OCC interface specification. Add sequence numbering and check for the correct sequence number on the response. Signed-off-by: Eddie James <eajames@linux.ibm.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Lei YU <mine260309@gmail.com> Signed-off-by: Joel Stanley <joel@jms.id.au>
2018-12-02fsi: Add On-Chip Controller (OCC) driverEddie James1-0/+599
The OCC is a device embedded on a POWER processor that collects and aggregates sensor data from the processor and system. The OCC can provide the raw sensor data as well as perform thermal and power management on the system. This driver provides an atomic communications channel between a service processor (e.g. a BMC) and the OCC. The driver is dependent on the FSI SBEFIFO driver to get hardware access through the SBE to the OCC SRAM. Commands are issued to the SBE to send or fetch data to the SRAM. Signed-off-by: Eddie James <eajames@linux.ibm.com> Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Guenter Roeck <linux@roeck-us.net>