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path: root/drivers/platform/mellanox
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2018-03-23platform/x86: mlx-platform: Add physical bus number auto detectionVadim Pasternak
mlx-platform does not provide a bus number to i2c-mlxcpld, assuming it is always one. On some x86 systems, other i2c drivers may probe before i2c-mlxcpld, causing bus one to be busy. Make mlx-platform determine which adapter number is free prior to activating i2c-mlxpld, adjusting the mux base numbers accordingly. Update the mlxreg-hotplug pdata similarly. This adds an explicit mlx-platform build dependency on I2C, update the Kconfig accordingly. Add the missing REGMAP dependency while we're at it. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> [dvhart: Rewrite commit message more concisely] [dvhart: Add build dependencies] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-03-23platform/mellanox: mlxreg-hotplug: Change input for device create routineVadim Pasternak
Change the first input parameter in mlxreg_hotplug_device_create to the pointer to mlxreg_hotplug private data in order to use the fields from the private data structure. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> [dvhart: Cleaned up commit message] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-03-23platform/x86: mlx-platform: Add deffered bus functionalityVadim Pasternak
mlx-platform activates i2c-mux-reg, which creates buses needed by mlxreg-hotplug. If the mlxreg-hotplug probe runs before the i2c-mux-reg probe completes, it may attempt to connect a device to an adapter number that has not been created yet, and fail. Make mlx-platform driver record the highest bus number in mlxreg-hotplug platform data and defer mlxreg-hotplug probe until all the buses are created. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> [dvhart: rewrite commit message more concisely] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-08platform/mellanox: mlxreg-hotplug: Fix uninitialized variableGeert Uytterhoeven
With gcc-4.1.2: drivers/platform/mellanox/mlxreg-hotplug.c: In function ‘mlxreg_hotplug_health_work_helper’: drivers/platform/mellanox/mlxreg-hotplug.c:347: warning: ‘ret’ is used uninitialized in this function Indeed, if mlxreg_core_item.count is zero, ret is used uninitialized. While this is unlikely to happen (it is set to ARRAY_SIZE(...) in x86 board files), this is done in another source file, so fix this by preinitializing ret to zero. Fixes: c6acad68eb2dbffd ("platform/mellanox: mlxreg-hotplug: Modify to use a regmap interface") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: mlxreg-hotplug: Add check for negative adapter numberVadim Pasternak
Verify before creation of hotplug device if the associated adapter number is negative. It could be in case hotplug event is not associated with hotplug device. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: mlxreg-hotplug: Enable building for ARMVadim Pasternak
Add ARM in addition to X86 as supported architectures in the Mellanox Hotplug Platform driver Kconfig entry. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> [dvhart: rewrite commit message] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: mlxreg-hotplug: Modify to use a regmap interfaceVadim Pasternak
Restructure mlxreg header for unification of hotplug item definitions. Unify hotplug items to allow any kind of item (power controller, fan eeprom, psu eeprom, asic health) in common way. Use a hardware independent regmap interface, enabling the support of hotplug events over programmable devices attached to different bus types, such as I2C, LPC, or SPI. Add a device node to the mlxreg_core_data structure. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: spelling corrections, refactor device node introduction] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: Group create/destroy with attribute functionsVadim Pasternak
Move the mlxreg_hotplug_device_create and _destroy functions up with the related attribute functions. No functional changes. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: refactored commit into smaller functional changes] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: Rename i2c bus to nrVadim Pasternak
Use Linux convention of nr instead of bus for i2c adapter number. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: refactored commit into smaller functional changes] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: mlxreg-hotplug: Remove unused wait.h includeVadim Pasternak
The driver does not make use of anything defined in wait.h. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: refactor into smaller functional changes, leave spinlock.h] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/x86: Move Mellanox platform hotplug driver to platform/mellanoxVadim Pasternak
In preparation for making the hotplug driver build for different architectures, move mlxcpld-hotplug.c to platform/mellanox and the header to include/linux/platform_data as mlxreg.h to reflect the new interface changes to come. Replace references to CPLD with REG throughout the files, consistent with the new name. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: update copyright, rewrite commit message] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>