Following are the changes: - Added a mechanism to handle synchronization between caller thread and isr so that isr should not get called when clock is disable or controller is in reset state. - Handling tx fifo overflow error. - Added delay before resetting the controller which is required if there is any error in previous transaction so proper stop signal will be generated. Change-Id: I7ac121e056193cd4601f032cdabab59e7e0946ea Reviewed-on: http://git-master/r/30457 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Tested-by: Alok Chauhan <alokc@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Danielle Sun <dsun@nvidia.com> Tested-by: Danielle Sun <dsun@nvidia.com> Reviewed-by: Bo Yan <byan@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Added some more debug message to print during i2c transfer failure to get more information from log. This help to understand/analyse the issue quickly. Change-Id: Ie957b9f2ad737da210722f2ea6f18da9a7b76813 Reviewed-on: http://git-master/r/30011 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
The clock table have two different entry for a given i2c controller. The second entry is not required and hence removing from table. Also removing the reference of this entry from driver. Change-Id: Iab5f79bf5d1fea9363ef524258fb3ec262547691 Reviewed-on: http://git-master/r/29629 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com> Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Narendra Damahe <ndamahe@nvidia.com>
The clk_get() api returns valid pointer in case of scucess otherwise returns error pointer. Hence checking the retrun pointer using macro IS_ERR_OR_NULL() to detect any error. Original-Change-Id: I92a62dc2c22c243e2aa35d7a10f88b6170b02f34 Reviewed-on: http://git-master/r/27876 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Change-Id: I402141a3230b35292bdd31f9c0a7fb3bf261cbee
Change-Id: I2ffeaf6f8dfeb279b40ca6f69f6c9157401a746a
Following are changes: - Using the sysinit_call to initialize the driver. - Using device from master adapter for slave adpter. Original-Change-Id: I4dd0725694008a6aaee9a1d3a92d370a5c46de31 Reviewed-on: http://git-master/r/19249 Reviewed-by: Krishna Thota <kthota@nvidia.com> Tested-by: Krishna Thota <kthota@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Change-Id: I62ba2e474d15764eccb2174444b194502e771307
To make the response fast from i2c, providing the option to enable clock of i2c always through platform data. Original-Change-Id: I89c9156fc97f92a45ce72626ccd77920e02ca356 Reviewed-on: http://git-master/r/19880 Tested-by: Pradeep Goudagunta <pgoudagunta@nvidia.com> Reviewed-by: Ramachandrudu Kandhala <rkandhala@nvidia.com> Change-Id: Ifaab9d7e052fb377abe27afdeb5c9cb4d19a6320
Implementing i2c slave driver in the linux i2c framework. This driver will support the slave functionality on tegra i2c controller. Original-Change-Id: Ia56e3299605ab8705f2f82bf512195e7736214b3 Reviewed-on: http://git-master/r/14208 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Change-Id: I01b742f2c9477f0df476330e49163eda43a8d14f
To support the i2c slave functionality in the kernel, adding the framework so that chip specific slave driver can be plugged in. Adding slave adapter and alogithms in framework so that slave bus driver can register chip specific driver. Original-Change-Id: Ie002dbd3b021f70814b455471e66a5da378ab3e9 Reviewed-on: http://git-master/r/14206 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Change-Id: I92b6bc4f3953a9edc7f9414a65b69005d2bbf8db
Removing the unnecessarily write in the interrupt status register to avoid controller status misbehave. bug 773262 Original-Change-Id: I15e2f3d5b377f44df5aae0fce9b55b2f3e7232b9 Reviewed-on: http://git-master/r/14223 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Tested-by: Alok Chauhan <alokc@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Change-Id: I17d9b90b91d54248bb23f7426faececd856403ea