linux-stable.git/drivers/tty/serial/xilinx_uartps.c, branch linux-4.13.y Linux kernel stable tree serial: uartps: Fix kernel doc warnings 2017-06-03T09:48:53+00:00 Nava kishore Manne nava.manne@xilinx.com 2017-05-26T11:13:18+00:00 094094a9373fbea80ec00714eed5c24f6fd39ecf This patch fixes the kernel doc warnings in the driver. Signed-off-by: Nava kishore Manne <navam@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
This patch fixes the kernel doc warnings in the driver.

Signed-off-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xilinx_uartps: Fix the error path 2017-05-18T14:38:20+00:00 Shubhrajyoti Datta shubhrajyoti.datta@xilinx.com 2017-05-09T06:20:32+00:00 d653c43aefedd3d22d3d2222c10f5b6ae2dfbe13 Fix the runtime calls in the error path. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Fix the runtime calls in the error path.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Enable clocks in the pm disable case also 2017-04-08T16:54:07+00:00 Shubhrajyoti Datta shubhrajyoti.datta@xilinx.com 2017-04-06T06:57:41+00:00 ecfc5771ef0617d33a19a75643b7b3708895018e When Power management is disabled then the clocks are not getting enabled. This patch enables it for the !PM case also. While at it also pm_runtime_set_active is called before calling pm_runtime_enable. Reported-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
When Power management is disabled then the clocks are not getting
enabled. This patch enables it for the !PM case also.
While at it also pm_runtime_set_active is called before
calling pm_runtime_enable.

Reported-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Cleanup the clock enable 2017-03-17T05:14:00+00:00 Shubhrajyoti Datta shubhrajyoti.datta@xilinx.com 2017-03-15T15:38:56+00:00 81e33b51ed69d2b2eaf3fbeb043144b9d9ec7629 The core handles the clocking now. Remove the clock disable in suspend. In resume we enable the clocks and disable after register write. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The core handles the clocking now. Remove the clock disable in
suspend. In resume we enable the clocks and disable after register
write.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xilinx_uartps: Add pm runtime support 2017-03-14T03:01:40+00:00 Shubhrajyoti Datta shubhrajyoti.datta@xilinx.com 2017-03-09T05:49:07+00:00 d62100f1aac28d18057c05410f706c65baf748fa Adds pm runtime support to xilinx uart ps. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Adds pm runtime support to xilinx uart ps.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Enable uart loopback mode 2017-01-25T10:08:30+00:00 Yasir-Khan yasir_khan@mentor.com 2017-01-23T12:26:08+00:00 5935a2b3a57c03d7e6fea967ef0b926f82fc995e This patch adds xilinx uart loopback support by modifying the cdns_uart_set_mctrl function to handle the switch to loopback mode. After this patch, the loopback mode can be enabled/disabled by setting/clearing the TIOCM_LOOP modem bit via TIOCMBIS/TIOCMBIC ioctls respectively. Signed-off-by: Yasir-Khan <yasir_khan@mentor.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
This patch adds xilinx uart loopback support by modifying the
cdns_uart_set_mctrl function to handle the switch to loopback mode.
After this patch, the loopback mode can be enabled/disabled by
setting/clearing the TIOCM_LOOP modem bit via TIOCMBIS/TIOCMBIC
ioctls respectively.

Signed-off-by: Yasir-Khan <yasir_khan@mentor.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Add new compatible string for ZynqMP 2016-10-27T14:00:32+00:00 Nava kishore Manne nava.manne@xilinx.com 2016-10-12T07:47:27+00:00 0267a4ff9836a1a4e59044db5bb8cdaddb986d3f This patch Adds the new compatible string for ZynqMP SoC. Signed-off-by: Nava kishore Manne <navam@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
This patch Adds the new compatible string for ZynqMP SoC.

Signed-off-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Add some register initialisation to cdns_early_console_setup() 2016-09-27T10:54:41+00:00 Scott Telford stelford@cadence.com 2016-09-22T15:58:16+00:00 c41251b17563234371a9b376ed4914efa4bc079b Add initialisation of control register and baud rate to cdns_early_console_setup(), required when running kernel standalone without a boot loader. Baud rate is only initialised when specified in earlycon command-line option, otherwise it is assumed this has been set by a boot loader. Updated Documentation/kernel-parameters.txt accordingly. Signed-off-by: Scott Telford <stelford@cadence.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Add initialisation of control register and baud rate to
cdns_early_console_setup(), required when running kernel standalone
without a boot loader. Baud rate is only initialised when specified in
earlycon command-line option, otherwise it is assumed this has been
set by a boot loader. Updated Documentation/kernel-parameters.txt
accordingly.

Signed-off-by: Scott Telford <stelford@cadence.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Removed unwanted checks while reading the error conditions 2016-09-27T10:54:41+00:00 Nava kishore Manne nava.manne@xilinx.com 2016-09-22T15:58:15+00:00 212d249b6acbe00ac3617938433ce785c2d68e88 This patch Remove the unwated checks while reading the parity,framing, overrun and Break detection errors. Signed-off-by: Nava kishore Manne <navam@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> [stelford@cadence.com: cherry picked from https://github.com/Xilinx/linux-xlnx commit b1cf74970df5470ffbc8e7876a9edf5e3498ef94] Signed-off-by: Scott Telford <stelford@cadence.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
This patch Remove the unwated checks while reading the parity,framing,
overrun and Break detection errors.

Signed-off-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
[stelford@cadence.com: cherry picked from
https://github.com/Xilinx/linux-xlnx commit
b1cf74970df5470ffbc8e7876a9edf5e3498ef94]
Signed-off-by: Scott Telford <stelford@cadence.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: xuartps: Rewrite the interrupt handling logic 2016-09-27T10:54:41+00:00 Anirudha Sarangi anirudha.sarangi@xilinx.com 2016-09-22T15:58:14+00:00 c8dbdc842d30618e4f7e315e3b0e6c43de7915f3 The existing interrupt handling logic has following issues. - Upon a parity error with default configuration, the control never comes out of the ISR thereby hanging Linux. - The error handling logic around framing and parity error are buggy. There are chances that the errors will never be captured. This patch ensures that the status registers are cleared on all cases so that a hang situation never arises. Signed-off-by: Anirudha Sarangi <anirudh@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> [stelford@cadence.com: cherry picked from https://github.com/Xilinx/linux-xlnx commit ac297e20d399850d7a8e373b6eccf2e183c15165 with manual conflict resolution] Signed-off-by: Scott Telford <stelford@cadence.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The existing interrupt handling logic has following issues.
- Upon a parity error with default configuration, the control
  never comes out of the ISR thereby hanging Linux.
- The error handling logic around framing and parity error are buggy.
  There are chances that the errors will never be captured.
This patch ensures that the status registers are cleared on all cases so
that a hang situation never arises.

Signed-off-by: Anirudha Sarangi <anirudh@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
[stelford@cadence.com: cherry picked from
https://github.com/Xilinx/linux-xlnx commit
ac297e20d399850d7a8e373b6eccf2e183c15165 with manual conflict resolution]
Signed-off-by: Scott Telford <stelford@cadence.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>