On Tue, 09 Oct 2018, Vladimir Zapolskiy wrote: > From: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx> > > The change adds I2C device driver for TI DS90Ux9xx de-/serializers, > support of subdevice controllers is done in separate drivers, because > not all IC functionality may be needed in particular situations, and > this can be fine grained controlled in device tree. > > The development of the driver was a collaborative work, the > contribution done by Balasubramani Vivekanandan includes: > * original implementation of the driver based on a reference driver, > * regmap powered interrupt controller support on serializers, > * support of implicitly or improperly specified in device tree ICs, > * support of device properties and attributes: backward compatible > mode, low frequency operation mode, spread spectrum clock generator. > > Contribution by Steve Longerbeam: > * added ds90ux9xx_read_indirect() function, > * moved number of links property and added ds90ux9xx_num_fpd_links(), > * moved and updated ds90ux9xx_get_link_status() function to core driver, > * added fpd_link_show device attribute. > > Sandeep Jain added support of pixel clock edge configuration. > > Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx> > --- > drivers/mfd/Kconfig | 14 + > drivers/mfd/Makefile | 1 + > drivers/mfd/ds90ux9xx-core.c | 879 ++++++++++++++++++++++++++++++++++ > include/linux/mfd/ds90ux9xx.h | 42 ++ > 4 files changed, 936 insertions(+) > create mode 100644 drivers/mfd/ds90ux9xx-core.c > create mode 100644 include/linux/mfd/ds90ux9xx.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 8c5dfdce4326..a969fa123f64 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1280,6 +1280,20 @@ config MFD_DM355EVM_MSP > boards. MSP430 firmware manages resets and power sequencing, > inputs from buttons and the IR remote, LEDs, an RTC, and more. > > +config MFD_DS90UX9XX > + tristate "TI DS90Ux9xx FPD-Link de-/serializer driver" > + depends on I2C && OF > + select MFD_CORE > + select REGMAP_I2C > + help > + Say yes here to enable support for TI DS90UX9XX de-/serializer ICs. > + > + This driver provides basic support for setting up the de-/serializer > + chips. Additional functionalities like connection handling to > + remote de-/serializers, I2C bridging, pin multiplexing, GPIO > + controller and so on are provided by separate drivers and should > + enabled individually. This is not an MFD driver. After a 30 second Google of what this device actually does, perhaps drivers/media might be a better fit? -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
