From 8b7a67cfa710f837881475de5188972bb92ed96d Mon Sep 17 00:00:00 2001 From: Ashish Kori Date: Wed, 26 Aug 2020 10:24:21 +0530 Subject: [PATCH] spi: spi-msm-geni: Propagate missing SPI Slave change from 4.14 to 5.4 Propagate following change from 4.14 to 5.4 for SPI SLAVE driver. 'commit 3c7e85615a1d64 ("spi: spi-geni-qcom: Restrict SPI responder to transfer mode 1")'. Change-Id: I6170a0e021cc0a09a2bc9ee26dfc504ee85bbf91 Signed-off-by: Ashish Kori --- drivers/spi/spi-msm-geni.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/spi/spi-msm-geni.c b/drivers/spi/spi-msm-geni.c index 03f59cd390ed..340e3ebfc259 100644 --- a/drivers/spi/spi-msm-geni.c +++ b/drivers/spi/spi-msm-geni.c @@ -336,6 +336,14 @@ static int setup_fifo_params(struct spi_device *spi_slv, cpha |= CPHA; } + /* SPI slave supports only mode 1, log unsuppoted mode and exit */ + if (spi->slave && !(cpol == 0 && cpha == 1)) { + GENI_SE_DBG(mas->ipc, false, mas->dev, + "%s: Unsupported SPI Slave mode cpol %d cpha %d\n", + __func__, cpol, cpha); + return -EINVAL; + } + if (spi_slv->mode & SPI_CS_HIGH) demux_output_inv |= BIT(spi_slv->chip_select);