From: Nikita Shubin <nikita.shubin@xxxxxxxxxxx>
- add OF ID match table
Instead of platform use_dma flag - check if DT dmas property is present to
decide to use dma ot not.
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Tested-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
Acked-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
Signed-off-by: Nikita Shubin <nikita.shubin@xxxxxxxxxxx>
---
drivers/spi/spi-ep93xx.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 1615fd22f9a2..f93cd506bf17 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -22,6 +22,7 @@
#include <linux/bitops.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/property.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/scatterlist.h>
@@ -644,6 +645,23 @@ static void ep93xx_spi_release_dma(struct ep93xx_spi *espi)
free_page((unsigned long)espi->zeropage);
}
+#ifdef CONFIG_OF
+static struct ep93xx_spi_info dt_spi_info;
+
+static struct ep93xx_spi_info *ep93xx_spi_get_platdata(struct platform_device *pdev)
+{
+ if (device_property_present(&pdev->dev, "dmas"))
+ dt_spi_info.use_dma = 1;
+
+ return &dt_spi_info;
+}
+#else
+static struct ep93xx_spi_info *ep93xx_spi_get_platdata(struct platform_device *pdev)
+{
+ return dev_get_platdata(&pdev->dev);
+}
+#endif
+
static int ep93xx_spi_probe(struct platform_device *pdev)
{
struct spi_master *master;
@@ -653,7 +671,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
int irq;
int error;
- info = dev_get_platdata(&pdev->dev);
+ info = ep93xx_spi_get_platdata(pdev);
if (!info) {
dev_err(&pdev->dev, "missing platform data\n");
return -EINVAL;
@@ -726,6 +744,7 @@ static int ep93xx_spi_probe(struct platform_device *pdev)
/* make sure that the hardware is disabled */
writel(0, espi->mmio + SSPCR1);
+ device_set_node(&master->dev, dev_fwnode(&pdev->dev));
error = devm_spi_register_master(&pdev->dev, master);
if (error) {
dev_err(&pdev->dev, "failed to register SPI master\n");
@@ -753,9 +772,16 @@ static void ep93xx_spi_remove(struct platform_device *pdev)
ep93xx_spi_release_dma(espi);
}
+static const struct of_device_id ep93xx_spi_of_ids[] = {
+ { .compatible = "cirrus,ep9301-spi" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ep93xx_spi_of_ids);
+
static struct platform_driver ep93xx_spi_driver = {
.driver = {
.name = "ep93xx-spi",
+ .of_match_table = ep93xx_spi_of_ids,
},
.probe = ep93xx_spi_probe,
.remove_new = ep93xx_spi_remove,
--
2.39.2
