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spi: Add Meson SPICC driver

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The SPICC hardware block on the Amlogic SoCs is Communication oriented and
can do Full-Duplex 8- to 32-bit width SPI transfers up to 30MHz.

The current driver only supportd the PIO transfer mode since the DMA seems
broken on available hardware.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Neil Armstrong
2017-05-23 15:39:33 +02:00
committed by Mark Brown
parent 01a330da0c
commit 454fa271bc
3 changed files with 627 additions and 0 deletions
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7
drivers/spi/Kconfig
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@@ -393,6 +393,13 @@ config SPI_FSL_ESPI
From MPC8536, 85xx platform uses the controller, and all P10xx,
P20xx, P30xx,P40xx, P50xx uses this controller.
config SPI_MESON_SPICC
tristate "Amlogic Meson SPICC controller"
depends on ARCH_MESON || COMPILE_TEST
help
This enables master mode support for the SPICC (SPI communication
controller) available in Amlogic Meson SoCs.
config SPI_MESON_SPIFC
tristate "Amlogic Meson SPIFC controller"
depends on ARCH_MESON || COMPILE_TEST

1
drivers/spi/Makefile
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@@ -53,6 +53,7 @@ obj-$(CONFIG_SPI_LANTIQ_SSC) += spi-lantiq-ssc.o
obj-$(CONFIG_SPI_JCORE) += spi-jcore.o
obj-$(CONFIG_SPI_LM70_LLP) += spi-lm70llp.o
obj-$(CONFIG_SPI_LP8841_RTC) += spi-lp8841-rtc.o
obj-$(CONFIG_SPI_MESON_SPICC) += spi-meson-spicc.o
obj-$(CONFIG_SPI_MESON_SPIFC) += spi-meson-spifc.o
obj-$(CONFIG_SPI_MPC512x_PSC) += spi-mpc512x-psc.o
obj-$(CONFIG_SPI_MPC52xx_PSC) += spi-mpc52xx-psc.o

619
drivers/spi/spi-meson-spicc.c Normal file
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