linux-kernel - [PATCH v2 SPI for-next 0/2] spi: microchip: pci1xxxx: Load SPI driver for SPI endpoint of PCI1XXXX switch

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Date:   Thu, 6 Oct 2022 10:35:12 +0530
From:   Tharun Kumar P <tharunkumar.pasumarthi@...rochip.com>
To:     <broonie@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-spi@...r.kernel.org>,
        <UNGLinuxDriver@...rochip.com>
Subject: [PATCH v2 SPI for-next 0/2]  spi: microchip: pci1xxxx: Load SPI driver for SPI endpoint of PCI1XXXX switch

Microchip PCI1XXXX is an unmanaged PCIe3.1a switch for consumer,
industrial, and automotive applications. This switch has multiple
downstream ports. One of the switch's downstream ports is a multifunction
endpoint; one of those functions supports SPI functionality. This series
of patches provides the SPI controller driver for the SPI function of the
multifunction PCIe endpoint of the switch.

RFC -> V2:
- Added logic to handle chip select disable case
- Set SPI_MASTER_MUST_TX flag
- Added logic to ensure current transaction is complete before suspending

Tharun Kumar P (2):
  spi: microchip: pci1xxxx: Add driver for SPI controller of PCI1XXXX
    PCIe switch
  spi: microchip: pci1xxxx: Add suspend and resume support for PCI1XXXX
    SPI driver

 drivers/spi/Kconfig        |   9 +
 drivers/spi/Makefile       |   1 +
 drivers/spi/spi-pci1xxxx.c | 475 +++++++++++++++++++++++++++++++++++++
 3 files changed, 485 insertions(+)
 create mode 100644 drivers/spi/spi-pci1xxxx.c

-- 
2.25.1