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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 052eb2d490 '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>
This commit is contained in:
Axel Lin 2014-02-10 21:48:16 +08:00 committed by Mark Brown
parent 052eb2d490
commit 383840d92f
1 changed files with 3 additions and 16 deletions
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19
drivers/spi/spi-tegra114.c
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@ -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;