Hi Fabrizio, On Thu, Feb 25, 2021 at 10:51:40PM +0000, Fabrizio Castro wrote: > The DAB hardware accelerator found on R-Car E3 (a.k.a. r8a77990) > and R-Car M3-N (a.k.a. r8a77965) devices is a hardware accelerator > for software DAB demodulators. > It consists of one FFT (Fast Fourier Transform) module and one > decoder module, compatible with DAB specification (ETSI EN 300 401 > and ETSI TS 102 563). > The decoder module can perform FIC decoding and MSC decoding > processing from de-puncture to final decoded result. > > This series adds FFT support only for R-Car E3 and R-Car M3-N, > FIC and MSC support will be added later on. Out of curiosity, could the FFT module be used as an accelerator for 2D FFT on images ? > Fabrizio Castro (7): > clk: renesas: r8a77990: Add DAB clock > clk: renesas: r8a77965: Add DAB clock > dt-bindings: misc: Add binding for R-Car DAB > misc: Add driver for DAB IP found on Renesas R-Car devices > arm64: dts: renesas: r8a77990: Add DAB support > arm64: dts: renesas: r8a77965: Add DAB support > arm64: configs: Add R-Car DAB support > > .../devicetree/bindings/misc/renesas,dab.yaml | 75 ++++++++ > MAINTAINERS | 7 + > arch/arm64/boot/dts/renesas/r8a77965.dtsi | 12 ++ > arch/arm64/boot/dts/renesas/r8a77990.dtsi | 12 ++ > arch/arm64/configs/defconfig | 1 + > drivers/clk/renesas/r8a77965-cpg-mssr.c | 1 + > drivers/clk/renesas/r8a77990-cpg-mssr.c | 1 + > drivers/misc/Kconfig | 1 + > drivers/misc/Makefile | 1 + > drivers/misc/rcar_dab/Kconfig | 11 ++ > drivers/misc/rcar_dab/Makefile | 8 + > drivers/misc/rcar_dab/rcar_dev.c | 176 ++++++++++++++++++ > drivers/misc/rcar_dab/rcar_dev.h | 116 ++++++++++++ > drivers/misc/rcar_dab/rcar_fft.c | 160 ++++++++++++++++ > include/uapi/linux/rcar_dab.h | 35 ++++ > 15 files changed, 617 insertions(+) > create mode 100644 Documentation/devicetree/bindings/misc/renesas,dab.yaml > create mode 100644 drivers/misc/rcar_dab/Kconfig > create mode 100644 drivers/misc/rcar_dab/Makefile > create mode 100644 drivers/misc/rcar_dab/rcar_dev.c > create mode 100644 drivers/misc/rcar_dab/rcar_dev.h > create mode 100644 drivers/misc/rcar_dab/rcar_fft.c > create mode 100644 include/uapi/linux/rcar_dab.h -- Regards, Laurent Pinchart
