kernel/drivers/gpu/host1x/hw/syncpt_hw.c, branch linux-4.17.y

gpu: host1x: Enable Tegra186 syncpoint protection

2017-10-20T12:19:52Z

Since Tegra186 the Host1x hardware allows syncpoints to be assigned to specific channels, preventing any other channels from incrementing them. Enable this feature where available and assign syncpoints to channels when submitting a job. Syncpoints are currently never unassigned from channels since that would require extra work and is unnecessary with the current channel allocation model. Signed-off-by: Mikko Perttunen Reviewed-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Fix bitshift/mask multipliers

2017-08-17T15:57:06Z

Some parts of Host1x uses BIT_WORD/BIT_MASK/BITS_PER_LONG to calculate register or field offsets. This worked fine on ARMv7, but now that BITS_PER_LONG is 64 but our registers are still 32-bit things are broken. Fix by replacing.. - BIT_WORD with (x / 32) - BIT_MASK with BIT(x % 32) - BITS_PER_LONG with 32 Signed-off-by: Mikko Perttunen Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

gpu: host1x: Whitespace cleanup for readability

2016-06-23T09:59:30Z

Insert a number of blank lines in places where they increase readability of the code. Also collapse various variable declarations to shorten some functions and finally rewrite some code for readability. Signed-off-by: Thierry Reding

gpu: host1x: Fix a couple of checkpatch warnings

2016-06-23T09:59:28Z

Fix a couple of occurrences where no blank line was used to separate variable declarations from code or where block comments were wrongly formatted. Signed-off-by: Thierry Reding

gpu: host1x: Consistently use unsigned int for counts

2016-06-23T09:59:23Z

The number of channels, syncpoints, bases and mlocks can never be negative, so use unsigned int instead of int. Also make loop variables the same type for consistency. Signed-off-by: Thierry Reding

gpu: host1x: Use relative include paths

2013-10-31T08:55:40Z

This is slightly safer than adding -Idrivers/gpu/host1x to cflags-y. Signed-off-by: Thierry Reding

gpu: host1x: Rework CPU syncpoint increment

2013-06-22T10:43:55Z

This patch merges host1x_syncpt_cpu_incr to host1x_syncpt_incr() as they are in practise doing the same thing. host1x_syncpt_incr() is also modified to return error codes. User space interface is modified accordingly to pass return values. Signed-off-by: Arto Merilainen Acked-By: Terje Bergstrom Signed-off-by: Thierry Reding

gpu: host1x: Add debug support

2013-04-22T10:32:46Z

Add support for host1x debugging. Adds debugfs entries, and dumps channel state to UART in case of stuck job. Signed-off-by: Arto Merilainen Signed-off-by: Terje Bergstrom Reviewed-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Erik Faye-Lund Signed-off-by: Thierry Reding

gpu: host1x: Add channel support

2013-04-22T10:32:43Z

Add support for host1x client modules, and host1x channels to submit work to the clients. Signed-off-by: Arto Merilainen Signed-off-by: Terje Bergstrom Reviewed-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Erik Faye-Lund Signed-off-by: Thierry Reding

gpu: host1x: Add host1x driver

2013-04-22T10:32:40Z

Add host1x, the driver for host1x and its client unit 2D. The Tegra host1x module is the DMA engine for register access to Tegra's graphics- and multimedia-related modules. The modules served by host1x are referred to as clients. host1x includes some other functionality, such as synchronization. Signed-off-by: Arto Merilainen Signed-off-by: Terje Bergstrom Reviewed-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Erik Faye-Lund Signed-off-by: Thierry Reding