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path: root/drivers/tty/vcc.c
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2020-10-01sparc64: vcc: Fix error return code in vcc_probe()Wei Yongjun1-0/+1
[ Upstream commit ff62255a2a5c1228a28f2bb063646f948115a309 ] Fix to return negative error code -ENOMEM from the error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Link: https://lore.kernel.org/r/20200427122415.47416-1-weiyongjun1@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2017-08-30sparc64: vcc: make ktermios constBhumika Goyal1-1/+1
Make this const as it is not modified anywhere. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-29sparc64: vcc: Check for IS_ERR() instead of NULLDan Carpenter1-2/+2
The tty_alloc_driver() function never returns NULL, it returns error pointers on error. Fixes: ce808b746325 ("sparc64: vcc: TTY driver initialization and cleanup") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add install & cleanup TTY operationsJag Raman1-0/+73
Add handlers to support TTY install & cleanup operations Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add break_ctl TTY operationJag Raman1-0/+35
Add handler to support TTY break_ctl operation Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add chars_in_buffer TTY operationJag Raman1-5/+29
Add handler to support TTY chars_in_buffer operation Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add write & write_room TTY operationsJag Raman1-3/+98
Add handlers to support TTY write & write_room operations Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add hangup TTY operationJag Raman1-0/+41
Add handler to support TTY hangup operation Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add open & close TTY operationsJag Raman1-1/+62
Add handlers to support TTY open & close operations Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Enable LDC event processing engineJag Raman1-0/+34
Enable event processing engine to handle LDC events Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add RX & TX timer for delayed LDC operationJag Raman1-2/+193
Add RX & TX timers to perform delayed/asynchronous LDC read and write operations. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Create sysfs attribute groupJag Raman1-0/+82
Create sysfs attribute group to show the domain name and send break command. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Enable VCC port probe and removalJag Raman1-0/+379
Enables VCC port probe and removal to initialize and terminate VCC ports respectively. When a device/port matching the VCC driver is added, the probe function is invoked along with a reference to the device. remove function is called when the device is removed. Also add APIs to cache and retrieve VCC ports from a VCC table Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: TTY driver initialization and cleanupJag Raman1-1/+82
Allocate and register TTY driver during module init. Cleanup TTY driver during module exit. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Add VCC debug message macrosJag Raman1-0/+41
Add C macros to print debug messages from VCC module Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16sparc64: vcc: Enable VCC module in linuxJag Raman1-0/+18
Enables the Virtual Console Concentrator (VCC) module in linux kernel Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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