spi: tegra114: Convert to use master->max_speed_hz

Use master->max_speed_hz instead of tspi->spi_max_frequency, so spi core will
handle checking transfer speed.

In additional, since commit 052eb2d49006 'spi: core: Set max_speed_hz of
spi_device default to max_speed_hz of controller',
spi core will also set default spi->max_speed_hz if it is not set.
So remove the duplicate code in tegra_spi_setup.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 3 insertions, 16 deletions

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index 413c71843492..d8c71b81165a 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -172,7 +172,6 @@ struct tegra_spi_data {
         void __iomem                            *base;
         phys_addr_t                             phys;
         unsigned                                irq;
-        u32                                     spi_max_frequency;
         u32                                     cur_speed;
 
         struct spi_device                       *cur_spi;
@@ -763,9 +762,6 @@ static int tegra_spi_setup(struct spi_device *spi)
 
         BUG_ON(spi->chip_select >= MAX_CHIP_SELECT);
 
-        /* Set speed to the spi max fequency if spi device has not set */
-        spi->max_speed_hz = spi->max_speed_hz ? : tspi->spi_max_frequency;
-
         ret = pm_runtime_get_sync(tspi->dev);
         if (ret < 0) {
                 dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
@@ -1019,16 +1015,6 @@ static irqreturn_t tegra_spi_isr(int irq, void *context_data)
         return IRQ_WAKE_THREAD;
 }
 
-static void tegra_spi_parse_dt(struct platform_device *pdev,
-        struct tegra_spi_data *tspi)
-{
-        struct device_node *np = pdev->dev.of_node;
-
-        if (of_property_read_u32(np, "spi-max-frequency",
-                                &tspi->spi_max_frequency))
-                tspi->spi_max_frequency = 25000000; /* 25MHz */
-}
-
 static struct of_device_id tegra_spi_of_match[] = {
         { .compatible = "nvidia,tegra114-spi", },
         {}
@@ -1050,8 +1036,9 @@ static int tegra_spi_probe(struct platform_device *pdev)
         platform_set_drvdata(pdev, master);
         tspi = spi_master_get_devdata(master);
 
-        /* Parse DT */
-        tegra_spi_parse_dt(pdev, tspi);
+        if (of_property_read_u32(pdev->dev.of_node, "spi-max-frequency",
+                                 &master->max_speed_hz))
+                master->max_speed_hz = 25000000; /* 25MHz */
 
         /* the spi->mode bits understood by this driver: */
         master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;