Applied "spi: rockchip: support lsb-first mode" to the spi tree

Mark Brown
2018-11-05T12:06:04Z

The patch

spi: rockchip: support lsb-first mode

has been applied to the spi tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From 04290192f7ebe892828f69ac57c4684e25da378d Mon Sep 17 00:00:00 2001
From: Emil Renner Berthing <kernel@esmil.dk>
Date: Wed, 31 Oct 2018 11:57:11 +0100
Subject: [PATCH] spi: rockchip: support lsb-first mode

Add missing support for lsb-first mode.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
drivers/spi/spi-rockchip.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 9e47e81553a1..3912526ead66 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -476,6 +476,8 @@ static void rockchip_spi_config(struct rockchip_spi *rs,

cr0 |= rs->rsd << CR0_RSD_OFFSET;
cr0 |= (spi->mode & 0x3U) << CR0_SCPH_OFFSET;
+ if (spi->mode & SPI_LSB_FIRST)
+ cr0 |= CR0_FBM_LSB << CR0_FBM_OFFSET;

if (xfer->rx_buf && xfer->tx_buf)
cr0 |= CR0_XFM_TR << CR0_XFM_OFFSET;
@@ -681,7 +683,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)

master->auto_runtime_pm = true;
master->bus_num = pdev->id;
- master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP;
+ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_LSB_FIRST;
master->num_chipselect = ROCKCHIP_SPI_MAX_CS_NUM;
master->dev.of_node = pdev->dev.of_node;
master->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8) | SPI_BPW_MASK(4);
--
2.19.0.rc2