[Mod] SPI驱动模板

spi/pn5180.c

@@ -0,0 +1,60 @@
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+
+#define IS_USE_STATIC_PLATFORM_DATA 0
+
+struct CHIP {
+	struct spi_device *spi;
+};
+
+#if IS_USE_STATIC_PLATFORM_DATA
+struct CHIP_platform_data {
+	int spi_ch;
+};
+#endif // IS_USE_STATIC_PLATFORM_DATA
+
+static int CHIP_probe(struct spi_device *spi)
+{
+	struct CHIP			*chip;
+#if IS_USE_STATIC_PLATFORM_DATA
+	struct CHIP_platform_data	*pdata;
+
+	/* assuming the driver requires board-specific data: */
+	pdata = (struct CHIP_platform_data *)&spi->dev.platform_data;
+	if (!pdata)
+		return -ENODEV;
+#endif // IS_USE_STATIC_PLATFORM_DATA
+
+	/* get memory for driver's per-chip state */
+	chip = kzalloc(sizeof *chip, GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	spi_set_drvdata(spi, chip);
+
+	return 0;
+}
+
+int CHIP_remove(struct spi_device *spi)
+{
+	struct CHIP *chip = NULL;
+
+	chip = (struct CHIP *)spi_get_drvdata(spi);
+
+	kfree(chip);
+
+	return 0;
+}
+
+static struct spi_driver CHIP_driver = {
+	.driver = {
+		.name	= "CHIP",
+		.owner	= THIS_MODULE,
+	},
+
+	.probe		= CHIP_probe,
+	.remove		= CHIP_remove,
+};
+
+module_spi_driver(CHIP_driver);