user/sven/linux.git/drivers/mailbox, branch v4.19.1

mailbox: Add support for i.MX messaging unit

2018-08-15T04:23:07Z

The i.MX Messaging Unit is a two side block which allows applications implement communication over this sides. The MU includes the following features: - Messaging control by interrupts or by polling - Four general-purpose interrupt requests reflected to the other side - Three general-purpose flags reflected to the other side - Four receive registers with maskable interrupt - Four transmit registers with maskable interrupt Reviewed-by: Vladimir Zapolskiy Reviewed-by: Dong Aisheng Signed-off-by: Oleksij Rempel Signed-off-by: Jassi Brar

mailbox: add MODULE_LICENSE() for mtk-cmdq-mailbox.c

2018-08-15T04:13:37Z

Fix missing MODULE_LICENSE() in mtk-cmdq-mailbox.c: WARNING: modpost: missing MODULE_LICENSE() in drivers/mailbox/mtk-cmdq-mailbox.o Fixes: 623a6143a845 ("mailbox: mediatek: Add Mediatek CMDQ driver") Signed-off-by: Randy Dunlap Cc: Cc: CK Hu Cc: Houlong Wei Signed-off-by: Jassi Brar

mailbox: mediatek: Add Mediatek CMDQ driver

2018-08-03T14:22:14Z

This patch is first version of Mediatek Command Queue(CMDQ) driver. The CMDQ is used to help write registers with critical time limitation, such as updating display configuration during the vblank. It controls Global Command Engine (GCE) hardware to achieve this requirement. Currently, CMDQ only supports display related hardwares, but we expect it can be extended to other hardwares for future requirements. Signed-off-by: Houlong Wei Signed-off-by: HS Liao Signed-off-by: CK Hu Signed-off-by: Jassi Brar

mailbox: ti-msgmgr: Add support for Secure Proxy

2018-08-03T13:27:41Z

Secure Proxy is another communication scheme in Texas Instrument's devices intended to provide an unique communication path from various processors in the System on Chip(SoC) to a central System Controller. Secure proxy is, in effect, an evolution of current generation Message Manager hardware block found in K2G devices. However the following changes have taken place: Secure Proxy instance exposes "threads" or "proxies" which is primary representation of "a" communication channel. Each thread is preconfigured by System controller configuration based on SoC usage requirements. Secure proxy by itself represents a single "queue" of communication but allows the proxies to be independently operated. Each Secure proxy thread can uniquely have their own error and threshold interrupts allowing for more fine control of IRQ handling. Provide the driver support for Secure Proxy and thread instances. NOTE: Secure proxy configuration is only done by System Controller, hence these are assumed to be pre-configured instances. See AM65x Technical Reference Manual (SPRUID7, April 2018) for further details: http://www.ti.com/lit/pdf/spruid7 Signed-off-by: Nishanth Menon Signed-off-by: Jassi Brar

mailbox: ti-msgmgr: Move the memory region name to descriptor

2018-08-03T13:27:41Z

For newer generation of the hardware, the naming of the region is decided at integration level and there could be additional regions as well. Hence move the region naming to be described from compatible descriptor. Signed-off-by: Nishanth Menon Signed-off-by: Jassi Brar

mailbox: ti-msgmgr: Change message count mask to be descriptor based

2018-08-03T13:27:41Z

Change mask used to extract the message count to be descriptor based. This is to support changes for count location for various SoC solutions. Signed-off-by: Nishanth Menon Signed-off-by: Jassi Brar

mailbox: ti-msgmgr: Allocate Rx channel resources only on request

2018-08-03T13:27:41Z

In a much bigger system SoCs, the number of Rx channels can be many and mostly unused based on the system of choice, and not all Rx channels need IRQs and allocating all memory at probe will be inefficient. Some SoCs could have total threads in the 100s and usage would be just 1 Rx thread. Thus, request and map the IRQs and allocate memory only when needed. Since these channels are requested by client drivers on need, our utilization will be optimal. Signed-off-by: Nishanth Menon Signed-off-by: Jassi Brar

mailbox: ti-msgmgr: Get rid of unused structure members

2018-08-03T13:27:41Z

Though q_proxies and q_slices do describe the hardware configuration, they are not necessary for operation given that the values are always default. Hence drop the same. Signed-off-by: Nishanth Menon Signed-off-by: Jassi Brar

mailbox/omap: use of_device_get_match_data() to get match data

2018-08-03T13:27:15Z

The OMAP Mailbox driver is directly using an integer value as match data for distinguishing the interrupt register layout between OMAP2 and OMAP4+ SoCs. Introduce a dedicated structure for storing this match data, and simplify the probe function by using the of_device_get_match_data() function. This allows the driver to scale for 64-bit platforms by eliminating the unnecessary type-casting between a u32 and a void pointer types. Signed-off-by: Suman Anna Signed-off-by: Jassi Brar

mailbox/omap: switch to SPDX license identifier

2018-08-03T13:27:15Z

Use the appropriate SPDX license identifier in the OMAP Mailbox driver source files and drop the previous boilerplate license text. Signed-off-by: Suman Anna Signed-off-by: Jassi Brar