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i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch

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Microchip pci1xxxx is an unmanaged PCIe3.1a Switch for Consumer,
Industrial and Automotive applications. This switch has multiple
downstream ports. In one of the Switch's Downstream port, there
is a multifunction endpoint for peripherals which includes an I2C
host controller. The I2C function in the endpoint operates at 100KHz,
400KHz and 1 MHz and has buffer depth of 128 bytes.
This patch provides the I2C controller driver for the I2C function
of the switch.

Signed-off-by: Tharun Kumar P <tharunkumar.pasumarthi@microchip.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Tharun Kumar P 2022-09-27 14:29:49 +05:30 committed by Wolfram Sang
parent 09a7bab68b
commit 3616936972
4 changed files with 1229 additions and 0 deletions
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8
MAINTAINERS
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@ -13435,6 +13435,14 @@ F: Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
F: drivers/nvmem/microchip-otpc.c
F: include/dt-bindings/nvmem/microchip,sama7g5-otpc.h
MICROCHIP PCI1XXXX I2C DRIVER
M: Tharun Kumar P <tharunkumar.pasumarthi@microchip.com>
M: Kumaravel Thiagarajan <kumaravel.thiagarajan@microchip.com>
M: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/busses/i2c-mchp-pci1xxxx.c
MICROCHIP PWM DRIVER
M: Claudiu Beznea <claudiu.beznea@microchip.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

10
drivers/i2c/busses/Kconfig
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@ -1267,6 +1267,16 @@ config I2C_PARPORT
This support is also available as a module. If so, the module
will be called i2c-parport.
config I2C_PCI1XXXX
tristate "PCI1XXXX I2C Host Adapter"
depends on PCI
help
If you say yes to this option, support will be included for
Microchip PCI1XXXX's I2C interface.
This driver can also be built as a module. If so, the module will
be called i2c-mchp-pci1xxxx.
config I2C_ROBOTFUZZ_OSIF
tristate "RobotFuzz Open Source InterFace USB adapter"
depends on USB

1
drivers/i2c/busses/Makefile
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@ -133,6 +133,7 @@ obj-$(CONFIG_I2C_DIOLAN_U2C) += i2c-diolan-u2c.o
obj-$(CONFIG_I2C_DLN2) += i2c-dln2.o
obj-$(CONFIG_I2C_CP2615) += i2c-cp2615.o
obj-$(CONFIG_I2C_PARPORT) += i2c-parport.o
obj-$(CONFIG_I2C_PCI1XXXX) += i2c-mchp-pci1xxxx.o
obj-$(CONFIG_I2C_ROBOTFUZZ_OSIF) += i2c-robotfuzz-osif.o
obj-$(CONFIG_I2C_TAOS_EVM) += i2c-taos-evm.o
obj-$(CONFIG_I2C_TINY_USB) += i2c-tiny-usb.o

1210
drivers/i2c/busses/i2c-mchp-pci1xxxx.c Normal file
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