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Rather than casting pci1xxxx_i2c_shutdown to an incompatible function type,
update the type to match that expected by __devm_add_action.
Reported by clang-16 with W-1:
.../i2c-mchp-pci1xxxx.c:1159:29: error: cast from 'void (*)(struct pci1xxxx_i2c *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
ret = devm_add_action(dev, (void (*)(void *))pci1xxxx_i2c_shutdown, i2c);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/linux/device.h:251:29: note: expanded from macro 'devm_add_action'
__devm_add_action(release, action, data, #action)
^~~~~~
No functional change intended.
Compile tested only.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: Tharun Kumar P<tharunkumar.pasumarthi@microchip.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Update I2C timing registers based on latest hardware design.
This fix does not break functionality of chips with older design and
existing users will not be affected.
Fixes: 361693697249 ("i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch")
Signed-off-by: Tharun Kumar P <tharunkumar.pasumarthi@microchip.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
The comparison of variable ret with -EPERM is always false because
ret is an u8 type. Fix this by making ret an int.
Cleans up clang warning:
drivers/i2c/busses/i2c-mchp-pci1xxxx.c:714:10: warning: result of comparison
of constant -1 with expression of type 'u8' (aka 'unsigned char') is always
false [-Wtautological-constant-out-of-range-compare]
Fixes: 361693697249 ("i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Some constants need 'UL' markings, otherwise they are shifted into the
sign bit.
Fixes: 361693697249 ("i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch")
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Microchip pci1xxxx is an unmanaged PCIe3.1a Switch for Consumer,
Industrial and Automotive applications. This switch has multiple
downstream ports. In one of the Switch's Downstream port, there
is a multifunction endpoint for peripherals which includes an I2C
host controller. The I2C function in the endpoint operates at 100KHz,
400KHz and 1 MHz and has buffer depth of 128 bytes.
This patch provides the I2C controller driver for the I2C function
of the switch.
Signed-off-by: Tharun Kumar P <tharunkumar.pasumarthi@microchip.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
