[coreboot-gerrit] Patch set updated for coreboot: qualcomm/ipq40xx: add vector operation method to SPI

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18297

-gerrit

commit ba2e6d2740a2e0059d26a94761a37af7c509c1b1
Author: Yuji Sasaki <sasakiy at google.com>
Date:   Thu Jan 26 10:17:45 2017 -0800

    qualcomm/ipq40xx: add vector operation method to SPI
    
    Adding spi_xfer_two_vectors as .xfer_vector for ipq40xx spi_ctrlr.
    Commit c2973d196d1 ("UPSTREAM: spi: Get rid of SPI_ATOMIC_SEQUENCING")
    has added a new driver method xfer_vector to support combined write-read
    operation within a single CS cycle. The method is wrapped in the
    spi_xfer_vector() API. When spi_ctrlr structure does not have
    xfer_vector method, API calls write and read operations sequentially.
    However the QCA40xx SPI driver has "forced" CS activation-inactivation
    in xfer method, so individual operation will break CS after write
    operation, making combined write-read cycle broken.
    Adding xfer_vector method to spi_ctrlr is a simple fix to prevent this.
    
    BUG=None
    BRANCH=none
    TEST=built and run on Gale
    
    Change-Id: I2258e563d0793bcacd626f78b8e96b3649a8e4a4
    Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
    Original-Commit-Id: 88a8824951cef4fe293dfa6e3a1a837ae07b6156
    Original-Change-Id: I031e85ce5b847353cb1084f6f68b2af8c6f702e1
    Original-Signed-off-by: Yuji Sasaki <sasakiy at google.com>
    Original-Reviewed-on: https://chromium-review.googlesource.com/433439
    Original-Reviewed-by: Aaron Durbin <adurbin at chromium.org>
    Original-Reviewed-by: Kan Yan <kyan at google.com>
---
 src/soc/qualcomm/ipq40xx/spi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/soc/qualcomm/ipq40xx/spi.c b/src/soc/qualcomm/ipq40xx/spi.c
index 6d044b3..68c2dd0 100644
--- a/src/soc/qualcomm/ipq40xx/spi.c
+++ b/src/soc/qualcomm/ipq40xx/spi.c
@@ -656,6 +656,7 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.claim_bus = spi_ctrlr_claim_bus,
 	.release_bus = spi_ctrlr_release_bus,
 	.xfer = spi_ctrlr_xfer,
+	.xfer_vector = spi_xfer_two_vectors,
 };
 
 int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)