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gpio-v5.2-10fbee1df · ·
This is the bulk of the GPIO changes for the v5.2 kernel cycle: Core changes: - The gpiolib MMIO driver has been enhanced to handle two direction registers, i.e. one register to set lines as input and one register to set lines as output. It turns out some silicon engineer thinks the ability to configure a line as input and output at the same time makes sense, this can be debated but includes a lot of analog electronics reasoning, and the registers are there and need to be handled consistently. Unsurprisingly, we enforce the lines to be either inputs or outputs in such schemes. - Send in the proper argument value to .set_config() dispatched to the pin control subsystem. Nobody used it before, now someone does, so fix it to work as expected. - The ACPI gpiolib portions can now handle pin bias setting (pull up or pull down). This has been in the ACPI spec for years and we finally have it properly integrated with Linux GPIOs. It was based on an observation from Andy Schevchenko that Thomas Petazzoni's changes to the core for biasing the PCA950x GPIO expander actually happen to fit hand-in-glove with what the ACPI core needed. Such nice synergies happen sometimes. New drivers: - A new driver for the Mellanox BlueField GPIO controller. This is using 64bit MMIO registers and can configure lines as inputs and outputs at the same time and after improving the MMIO library we handle it just fine. Interesting. - A new IXP4xx proper gpiochip driver with hierarchical interrupts should be coming in from the ARM SoC tree as well. Driver enhancements: - The PCA053x driver handles the CAT9554 GPIO expander. - The PCA053x driver handles the NXP PCAL6416 GPIO expander. - Wake-up support on PCA053x GPIO lines. - OMAP now does a nice asynchronous IRQ handling on wake-ups by letting everything wake up on edges, and this makes runtime PM work as expected too. Misc: - Several cleanups such as devres fixes. - Get rid of some languager comstructs that cause problems when compiling with LLVMs clang. - Documentation review and update.
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sound-5.2-rc1ed97c988 · ·
sound updates for 5.2-rc1 The most significant changes at this cycle are the Sound Open Firmware support from Intel for the common DSP framework along with its support for Intel platforms. It's a door opened to a real "free" firmware (in the sense of FOSS), and other parties show interests in it. In addition to SOF, we've got a bunch of updates and fixes as usual. Some highlights are below. ALSA core: - Cleanups and fixes in ALSA timer code to cover some races spotted by syzkaller - Cleanups and fixes in ALSA sequencer code to cover some races, again unsurprisingly, spotted by syzkaller - Optimize the common page allocation helper with alloc_pages_exact() ASoC: - Add SOF core support, as well as Intel SOF platform support - Generic card driver improvements: support for MCLK/sample rate ratio and pin switches - A big set of improvements to TLV320AIC32x4 drivers - New drivers for Freescale audio mixers, several Intel machines, several Mediatek machines, Meson G12A, Spreadtrum compressed audio and DMA devices HD-audio: - A few Realtek codec fixes for reducing pop noises - Quirks for Chromebooks - Workaround for faulty connection report on AMD/Nvidia HDMI Others: - A quirk for Focusrite Scarlett Solo USB-audio - Add support for MOTU 8pre FireWire - 24bit sample format support in aloop - GUS patch format support (finally, over a decade) in native emux synth code
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