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path: root/drivers/char/tpm/tpm_i2c_nuvoton.c
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* tpm: Create a tpm_class_ops structure and use it in the driversJason Gunthorpe2014-01-061-1/+1
| | | | | | | | | | | | | This replaces the static initialization of a tpm_vendor_specific structure in the drivers with the standard Linux idiom of providing a const structure of function pointers. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com> Reviewed-by: Ashley Lai <adlai@linux.vnet.ibm.com> [phuewe: did apply manually due to commit 191ffc6bde3 tpm/tpm_i2c_atmel: fix coccinelle warnings] Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
* tpm: Pull all driver sysfs code into tpm-sysfs.cJason Gunthorpe2014-01-061-30/+0
| | | | | | | | | | | | | | | | | The tpm core now sets up and controls all sysfs attributes, instead of having each driver have a unique take on it. All drivers now now have a uniform set of attributes, and no sysfs related entry points are exported from the tpm core module. This also uses the new method used to declare sysfs attributes with DEVICE_ATTR_RO and 'struct attribute *' Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [phuewe: had to apply the tpm_i2c_atmel part manually due to commit 191ffc6bde3fc tpm/tpm_i2c_atmel: fix coccinelle warnings] Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
* tpm: Pull everything related to /dev/tpmX into tpm-dev.cJason Gunthorpe2014-01-061-10/+0
| | | | | | | | | | | | | | | | | CLASS-dev.c is a common idiom for Linux subsystems This pulls all the code related to the miscdev into tpm-dev.c and makes it static. The identical file_operation structs in the drivers are purged and the tpm common code unconditionally creates the miscdev. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com> Reviewed-by: Ashley Lai <adlai@linux.vnet.ibm.com> [phuewe: tpm_dev_release is now used only in this file, thus the EXPORT_SYMBOL can be dropped and the function be marked as static. It has no other in-kernel users] Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
* char: tpm: nuvoton: remove unused variableMichal Nazarewicz2014-01-061-1/+0
| | | | | | | | | “wait” wait queue is defined but never used in the function, thus it can be removed. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Acked-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
* tpm: Add support for the Nuvoton NPCT501 I2C TPMJason Gunthorpe2013-10-221-0/+710
This chip is/was also branded as a Winbond WPCT301. Originally written by Dan Morav <dmorav@nuvoton.com> and posted to LKML: https://lkml.org/lkml/2011/9/7/206 The original posting was not merged, I have taken it as a starting point, forward ported, tested and revised the driver: - Rework interrupt handling to work properly with level triggered interrupts. The old version just locked up. - Synchronize various items with Peter Huewe's Infineon driver: * Add durations/timeouts sysfs calls * Remove I2C device auto-detection * Don't fiddle with chip->release * Call tpm_dev_vendor_release in the probe error path * Use MODULE_DEVICE_TABLE for the I2C ids * Provide OF compatible strings for DT support * Use SIMPLE_DEV_PM_OPS * Use module_i2c_driver - checkpatch cleanups - Testing on ARM Kirkwood with GPIO interrupts, with this device tree: tpm@57 { compatible = "nuvoton,npct501"; reg = <0x57>; interrupt-parent = <&gpio1>; interrupts = <6 IRQ_TYPE_LEVEL_LOW>; }; Signed-off-by: Dan Morav <dmorav@nuvoton.com> [jgg: revised and tested] Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [phuewe: minor whitespace changes, fixed module name in kconfig] Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
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