linux-toradex.git/drivers/tty/serial, branch tegra Linux kernel for Apalis and Colibri modules Various Tegra HS UART backports 2015-11-02T21:16:32+00:00 Mitja Spes mitja@lxnav.com 2015-08-27T07:03:06+00:00 a2d16785572f10d08693b3cb6d45555909fc7b83 Various Tegra HS UART backports Signed-off-by: Mitja Spes <mitja@lxnav.com> 
Various Tegra HS UART backports

Signed-off-by: Mitja Spes <mitja@lxnav.com>
Fix HS UART HW buffer overrun issue 2015-11-02T21:15:44+00:00 Mitja Spes mitja@lxnav.com 2015-08-27T07:01:42+00:00 9351043ca9b70e20b05ae86a4ce70c8d2deadb1c Fix HS UART HW buffer overrun issue when using no flow control Signed-off-by: Mitja Spes <mitja@lxnav.com> 
Fix HS UART HW buffer overrun issue when using no flow control

Signed-off-by: Mitja Spes <mitja@lxnav.com>
tty: serial: tegra: initialize with lower baudrate 2014-03-10T13:22:39+00:00 Stefan Agner stefan.agner@toradex.com 2014-03-10T13:01:29+00:00 56db5e2dc402ec8dd7ba922ec5ae1b450ed95d43 While setup, there is a time the serial port is running on a predefined speed (115200). When data arrived during this phase at a lower baudrate (e.g. 9600), a lot of overrun and break error messages were shown. Due to those messages, the terminal setup never finished, and thus never reached the selected baudrate (e.g. 9600). By choosing a lower baudrate at the startup (9600), a lot less (if any at all) messages are shown and those initialization always succeeds. Another solution would be to disable those messages completely. However, while normal mode its good to have those UART error messages. 
While setup, there is a time the serial port is running on a
predefined speed (115200). When data arrived during this phase at
a lower baudrate (e.g. 9600), a lot of overrun and break error
messages were shown. Due to those messages, the terminal setup
never finished, and thus never reached the selected baudrate (e.g.
9600). By choosing a lower baudrate at the startup (9600), a lot
less (if any at all) messages are shown and those initialization
always succeeds.

Another solution would be to disable those messages completely.
However, while normal mode its good to have those UART error
messages.
tty: serial: 8250: tegra: irq 68: nobody cared workaround 2012-12-17T12:27:29+00:00 Max Krummenacher max.krummenacher@toradex.com 2012-12-14T02:47:32+00:00 f6417beb8f7bbfcbb9e047b582a22f4feaee3124 The irq request flag sometimes does not get reset or is asserted immediately, but iir does not indicated this, if so ISR is entered with iir set to 0xc1, i.e. no irq pending. Try enabling the transmit register empty interrupt, iir becomes 0xc2, irq gets de-asserted and ier is reverted by the regular code flow in the ISR. We try this every 4096 spurious irq. Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com> 
The irq request flag sometimes does not get reset or is asserted
immediately, but iir does not indicated this, if so ISR is entered with
iir set to 0xc1, i.e. no irq pending.
Try enabling the transmit register empty interrupt, iir becomes 0xc2,
irq gets de-asserted and ier is reverted by the regular code flow in
the ISR.
We try this every 4096 spurious irq.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
serial: tegra: treat warnings as errors 2012-08-02T16:25:13+00:00 Deepak Nibade dnibade@nvidia.com 2012-07-24T12:17:56+00:00 98c6d05c0b39367a6116eb40cae05f5586d54c9d -add compilation flag to treat warning as error bug 949219 Change-Id: I1b4eb4a38abbf6140ab5929bb51eec469b96b710 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/118024 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Sanjay Singh Rawat <srawat@nvidia.com> Reviewed-by: Sachin Nikam <snikam@nvidia.com> Reviewed-by: Sri Krishna Chowdary <schowdary@nvidia.com> 
-add compilation flag to treat warning as error

bug 949219

Change-Id: I1b4eb4a38abbf6140ab5929bb51eec469b96b710
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/118024
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sanjay Singh Rawat <srawat@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Sri Krishna Chowdary <schowdary@nvidia.com>
tty: serial: tegra: IrDA support with tegra_hsuart 2012-07-23T21:41:16+00:00 Ramalingam C ramalingamc@nvidia.com 2012-07-11T07:00:44+00:00 1f2b0eaf5293329eaf35742921e1260552313a2d Adds the IrDA transceiver handling support to tegra_hsuart driver based on the platform data. Bug 999895 Change-Id: Ia475639d97c540d014c7128ef392fa394a5b26ad Signed-off-by: Ramalingam C <ramalingamc@nvidia.com> Reviewed-on: http://git-master/r/114927 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> 
Adds the IrDA transceiver handling support to tegra_hsuart driver based on
the platform data.

Bug 999895

Change-Id: Ia475639d97c540d014c7128ef392fa394a5b26ad
Signed-off-by: Ramalingam C <ramalingamc@nvidia.com>
Reviewed-on: http://git-master/r/114927
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
tty: serial: tegra-hsuart: Add check for platform data 2012-06-07T00:35:54+00:00 Manoj Chourasia mchourasia@nvidia.com 2012-06-05T11:19:42+00:00 5969910cc439df68c1a8d565708fd23f7f1aa795 It is not necessary that all platform do register platform data for tegra HS uart. platfrom_data pointer should be checked before accessing it. Added a check for same. bug 995731 Change-Id: I2dbbaa4387157b92b29bc7b8eacefad23372427e Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com> Reviewed-on: http://git-master/r/106451 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Sandeep Trasi <strasi@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> 
It is not necessary that all platform do register platform
data for tegra HS uart. platfrom_data pointer should
be checked before accessing it.

Added a check for same.

bug 995731

Change-Id: I2dbbaa4387157b92b29bc7b8eacefad23372427e
Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com>
Reviewed-on: http://git-master/r/106451
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
serial: tegra: disable interrupt when changing configuration 2012-06-01T06:46:06+00:00 Laxman Dewangan ldewangan@nvidia.com 2012-05-23T11:46:59+00:00 12b2531d0adf256dea0206c472ba8ffef58b65ff Disable the interrupts when the baudrate or any uart configuration. This will avoid the interrupt to be call when configuration is getting change. bug 984164 bug 969087 Change-Id: Id008964773237726a0ec4a04c428d3975bf3ebd9 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/104476 Reviewed-by: Automatic_Commit_Validation_User Tested-by: Pradeep Goudagunta <pgoudagunta@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: David Yu (Engrg-SW) <davyu@nvidia.com> Tested-by: David Yu (Engrg-SW) <davyu@nvidia.com> 
Disable the interrupts when the baudrate or any uart
configuration. This will avoid the interrupt to be call
when configuration is getting change.

bug 984164
bug 969087

Change-Id: Id008964773237726a0ec4a04c428d3975bf3ebd9
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/104476
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Pradeep Goudagunta <pgoudagunta@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: David Yu (Engrg-SW) <davyu@nvidia.com>
Tested-by: David Yu (Engrg-SW) <davyu@nvidia.com>
dmaengine/dma_slave: fix merge issue 2012-05-17T13:41:34+00:00 Laxman Dewangan ldewangan@nvidia.com 2012-05-15T12:51:38+00:00 b245e73464dac33b2e1a62de7fb5959676ab133f Merges of dma changes from mainline reported conflict and it was not got resolved properly. Fix the resolution issue. Change-Id: I7edc5effc0b9a61363e77e6cc39eb62e315396d0 Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-on: http://git-master/r/102590 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit 
Merges of  dma changes from mainline reported conflict and
it was not got resolved properly.
Fix the resolution issue.

Change-Id: I7edc5effc0b9a61363e77e6cc39eb62e315396d0
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/102590
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
tty: serial: tegra: Fix section mismatch warnings 2012-05-15T22:52:13+00:00 Pradeep Kumar pgoudagunta@nvidia.com 2012-05-14T12:26:00+00:00 523a88997eb7641b312c4e7d9c519dc99a484823 Fix section mismatch warnings derived from tegra_uart_platform_driver. Bug 984436 Change-Id: Iec737f28b0a7ce3ae521ad788e6ca5a101675c52 Signed-off-by: Pradeep Kumar <pgoudagunta@nvidia.com> Reviewed-on: http://git-master/r/102237 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> 
Fix section mismatch warnings derived from
tegra_uart_platform_driver.

Bug 984436

Change-Id: Iec737f28b0a7ce3ae521ad788e6ca5a101675c52
Signed-off-by: Pradeep Kumar <pgoudagunta@nvidia.com>
Reviewed-on: http://git-master/r/102237
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>