From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> It's been very long time since there was any activity on the slimbus patches, Am currently working on getting Qualcomm DSP based audio working on top of mainline. Slimbus is one of the major component for getting any analog audio on QCOM SoC's. So am taking intiative to address the review comments on the older patchset and send it. I have tested this patch on IFC6410 board with wcd9310 codec. SLIMbus (Serial Low Power Interchip Media Bus) is a specification developed by MIPI (Mobile Industry Processor Interface) alliance. SLIMbus is a 2-wire implementation, which is used to communicate with peripheral components like audio-codec. SLIMbus uses Time-Division-Multiplexing to accommodate multiple data channels, and control channel. Control channel has messages to do device-enumeration, messages to send/receive control-data to/from slimbus devices, messages for port/channel management, and messages to do bandwidth allocation. Framework is introduced to support multiple instances of the bus (1 controller per bus), and multiple slave devices per controller. SPI and I2C frameworks, and comments from last time when I submitted the patches were referred-to while working on this framework. These patchsets introduce device-management, OF helpers, and messaging APIs, controller driver for Qualcomm's slimbus controller, and clock-pause feature for entering/exiting low-power mode for SLIMbus. Framework patches to do channel, port and bandwidth management are work-in-progress and will be sent out once these initial patches are accepted. These patchsets were tested on Qualcomm Snapdragon processor board using the controller driver, and a test slave device. Changes from V5 to V6: * aligned slim_driver_register more like other buses, suggested by Arnd. * removed boardinfo and add_device apis for now, suggested by Arnd * Few namespace cleanups suggested by Masami * merged of apis in to first patch as suggested by Arnd. * slimbus clients "compatible" name space made much inline with USB and PCIE, suggested by Rob and Arnd. * Removed memory allocations to controller drivers, as suggested by Arnd. * Various bindings comments addressed as suggested by Mark and others. * Added regmap interface so that codecs can write more generic code. * Added MAINTAINER file. Sagar Dharia (5): slimbus: Device management on SLIMbus slimbus: Add messaging APIs to slimbus framework slimbus: qcom: Add Qualcomm Slimbus controller driver slimbus: Add support for 'clock-pause' feature slimbus: qcom: Add runtime-pm support using clock-pause feature Srinivas Kandagatla (2): regmap: add SLIMBUS support MAINTAINERS: Add SLIMbus maintainer Documentation/devicetree/bindings/slimbus/bus.txt | 57 ++ .../devicetree/bindings/slimbus/slim-qcom-ctrl.txt | 43 ++ Documentation/slimbus/summary | 109 ++++ MAINTAINERS | 8 + drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/base/regmap/Kconfig | 4 + drivers/base/regmap/Makefile | 1 + drivers/base/regmap/regmap-slimbus.c | 89 +++ drivers/slimbus/Kconfig | 20 + drivers/slimbus/Makefile | 8 + drivers/slimbus/slim-core.c | 725 +++++++++++++++++++++ drivers/slimbus/slim-messaging.c | 509 +++++++++++++++ drivers/slimbus/slim-qcom-ctrl.c | 714 ++++++++++++++++++++ drivers/slimbus/slim-qcom.h | 64 ++ drivers/slimbus/slim-sched.c | 126 ++++ include/linux/mod_devicetable.h | 13 + include/linux/regmap.h | 18 + include/linux/slimbus.h | 512 +++++++++++++++ 19 files changed, 3023 insertions(+) create mode 100644 Documentation/devicetree/bindings/slimbus/bus.txt create mode 100644 Documentation/devicetree/bindings/slimbus/slim-qcom-ctrl.txt create mode 100644 Documentation/slimbus/summary create mode 100644 drivers/base/regmap/regmap-slimbus.c create mode 100644 drivers/slimbus/Kconfig create mode 100644 drivers/slimbus/Makefile create mode 100644 drivers/slimbus/slim-core.c create mode 100644 drivers/slimbus/slim-messaging.c create mode 100644 drivers/slimbus/slim-qcom-ctrl.c create mode 100644 drivers/slimbus/slim-qcom.h create mode 100644 drivers/slimbus/slim-sched.c create mode 100644 include/linux/slimbus.h -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
