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authorGao Pan <pandy.gao@nxp.com>2016-11-24 19:04:44 +0800
committerMark Brown <broonie@kernel.org>2016-11-25 13:04:41 +0000
commit3ffa1a5dc696f661754bf145813433fda92371b2 (patch)
tree00dadd3ad3a993a6d3c8fe64377ef5262b289a55 /drivers/spi/spi-fsl-lpspi.c
parenta17efbc5ef9468aae32c7799a0ebc329c15cd0dc (diff)
spi: imx: use prepare_transfer_hardware() for lpspi
The old driver enable clk in fsl_lpspi_prepare_message() and disable clk in fsl_lpspi_unprepare_message(). Rather than doing this per message it's a bit better to do it in prepare_transfer_hardware(), that way if there's a sequence of messages queued one after another we don't turn the clock on and off all the time. Signed-off-by: Gao Pan <pandy.gao@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-fsl-lpspi.c')
-rw-r--r--drivers/spi/spi-fsl-lpspi.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index bcb7b284d2f2..d7ce32aa083b 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -148,16 +148,14 @@ static void fsl_lpspi_intctrl(struct fsl_lpspi_data *fsl_lpspi,
writel(enable, fsl_lpspi->base + IMX7ULP_IER);
}
-static int fsl_lpspi_prepare_message(struct spi_master *master,
- struct spi_message *msg)
+static int lpspi_prepare_xfer_hardware(struct spi_master *master)
{
struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
return clk_prepare_enable(fsl_lpspi->clk);
}
-static int
-fsl_lpspi_unprepare_message(struct spi_master *master, struct spi_message *msg)
+static int lpspi_unprepare_xfer_hardware(struct spi_master *master)
{
struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
@@ -438,8 +436,8 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
fsl_lpspi->dev = &pdev->dev;
master->transfer_one_message = fsl_lpspi_transfer_one_msg;
- master->prepare_message = fsl_lpspi_prepare_message;
- master->unprepare_message = fsl_lpspi_unprepare_message;
+ master->prepare_transfer_hardware = lpspi_prepare_xfer_hardware;
+ master->unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware;
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX;
master->dev.of_node = pdev->dev.of_node;