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When we compile-in the CCI along with the imx412 driver and run on the RB5
we see that i2c_add_adapter() causes the probe of the imx412 driver to
happen.
This probe tries to perform an i2c xfer() and the xfer() in i2c-qcom-cci.c
fails on pm_runtime_get() because the i2c-qcom-cci.c::probe() function has
not completed to pm_runtime_enable(dev).
Fix this sequence by ensuring pm_runtime_xxx() calls happen prior to adding
the i2c adapter.
Fixes: e517526195de ("i2c: Add Qualcomm CCI I2C driver")
Reported-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Tested-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Add a compatible for MSM8226's Camera Control Interface, which is
similar to the one used on MSM8916.
Signed-off-by: Rayyan Ansari <rayyan@ansari.sh>
Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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MSM8974 CCI is the same as MSM8916 except it has two masters.
Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Trivial non-functional change, which adds an alias to an extensively
used data location.
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into i2c/for-mergewindow
Provide a tag for maintainers to pull the generic_handle_irq_safe() API.
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Add QCOM SM8450 specific compatible for CCI controller, which is
equal to CCI controllers found on QCOM SDM845 and QCOM SM8250 SoCs.
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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There is a minor chance for a race, if a pointer to an i2c-bus subnode
is stored and then reused after releasing its reference, and it would
be sufficient to get one more reference under a loop over children
subnodes.
Fixes: e517526195de ("i2c: Add Qualcomm CCI I2C driver")
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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If i2c_add_adapter() fails to add an I2C adapter found on QCOM CCI
controller, on error path i2c_del_adapter() is still called.
Fortunately there is a sanity check in the I2C core, so the only
visible implication is a printed debug level message:
i2c-core: attempting to delete unregistered adapter [Qualcomm-CCI]
Nevertheless it would be reasonable to correct the probe error path.
Fixes: e517526195de ("i2c: Add Qualcomm CCI I2C driver")
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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SM8250 CCI is the same as SDM845, add an equivalent compatible for SM8250.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Since we have generic definitions for bus frequencies, let's use them.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Khalil Blaiech <kblaiech@nvidia.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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During cci_isr() errors read from register fields belonging to
i2c master1 are currently assigned to the status field belonging to
i2c master0. This patch corrects this error, and always assigns
master1 errors to the status field of master1.
Fixes: e517526195de ("i2c: Add Qualcomm CCI I2C driver")
Reported-by: Loic Poulain <loic.poulain@linaro.org>
Suggested-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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This commit adds I2C bus support for the Camera Control Interface
(CCI) I2C controller found on the Qualcomm SoC processors. This I2C
controller supports two masters and they are registered to the core.
CCI versions supported in the driver are msm8916, msm8996 and sdm845.
This is a rework of the patch posted by Vinod:
https://patchwork.kernel.org/patch/10569961/
With additional fixes + most of the comments addressed.
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Tested-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[wsa: removed err msg after platform_get_irq]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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