spi stuff

driver/counter.c

@@ -5,7 +5,7 @@
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
 #include <linux/gpio/consumer.h>
-#include <linux/spi.h>
+#include <linux/spi/spi.h>
 
 /* Meta Information */
 MODULE_LICENSE("GPL");
@@ -20,7 +20,7 @@ static struct of_device_id leds_driver_ids[] = {
     .compatible = "hottis,leds",
   }, { /* sentinel */ }
 };
-// MODULE_DEVICE_TABLE(of, my_driver_ids);
+// MODULE_DEVICE_TABLE(of, leds_driver_ids);
 
 static struct platform_driver leds_driver = {
   .probe = dt_leds_probe,
@@ -31,6 +31,36 @@ static struct platform_driver leds_driver = {
   },
 };
 
+/*
+static int dt_ls7366r_probe(struct spi_device *client);
+static void dt_ls7366r_remove(struct spi_device *client);
+
+static struct of_device_id ls7366r_driver_ids[] = {
+  {
+    .compatible = "hottis,ls7366r0",
+  }, {}
+};
+MODULE_DEVICE_TABLE(of, ls7366r_driver_ids);
+
+static struct spi_device_id ls7366r[] = {
+  { "ls7366r0", 0 },
+  {},
+};
+MODULE_DEVICE_TABLE(spi, ls7366r);
+
+static struct spi_driver ls7366r_driver = {
+  .probe = dt_ls7366r_probe,
+  .remove = dt_ls7366r_remove,
+  .id_table = ls7366r,
+  .driver = {
+    .name = "ls7366r0",
+    .of_match_table = ls7366r_driver_ids,
+  },
+};
+*/
+
+
+
 /* GPIO variable */
 static struct gpio_desc *red_led = NULL;
 static struct gpio_desc *blue_led = NULL;
@@ -42,7 +72,7 @@ static struct gpio_desc *blue_led = NULL;
 static int dt_leds_probe(struct platform_device *pdev) {
   struct device *dev = &pdev->dev;
 
-  printk("counter - probing\n");
+  printk("counter - led probing\n");
 
   if(!device_property_present(dev, "red-led-gpio")) {
     printk("counter - Error! Device property 'red-led-gpio' not found!\n");
@@ -73,21 +103,52 @@ static int dt_leds_probe(struct platform_device *pdev) {
  * @brief This function is called on unloading the driver 
  */
 static void dt_leds_remove(struct platform_device *pdev) {
-  printk("counter - removing\n");
+  printk("counter - led removing\n");
   gpiod_put(red_led);
   gpiod_put(blue_led);
 }
 
+
+
+
+/*
+static int dt_ls7366r_probe(struct spi_device *client) {
+  printk("counter - ls7366r probing\n");
+  
+  int ret = spi_setup(client);
+  if (ret < 0) {
+    printk("counter - Error! Failed to set up the SPI bus\n");
+    return ret;
+  }
+
+  return 0;
+}
+
+
+static void dt_ls7366r_remove(struct spi_device *client) {
+  printk("counter - ls7366r removing\n");
+}
+*/
+
+
 /**
  * @brief This function is called, when the module is loaded into the kernel
  */
 static int __init my_init(void) {
   printk("counter - Loading the drivers...\n");
-  if(platform_driver_register(&leds_driver)) {
+
-    printk("dt_gpio - Error! Could not load leds driver\n");
+  if (platform_driver_register(&leds_driver)) {
+    printk("counter - Error! Could not load leds driver\n");
     return -1;
   }
 
+  /*
+  if (spi_register_driver(&ls7366r_driver)) {
+    printk("counter - Error! Could not load spi driver\n");
+    return -1;
+  }
+  */
+
   printk("counter - red led on\n");
   gpiod_set_value(red_led, 1);
 
@@ -104,6 +165,9 @@ static void __exit my_exit(void) {
   gpiod_set_value(red_led, 0);
 
   platform_driver_unregister(&leds_driver);
+  /*
+  spi_unregister_driver(&ls7366r_driver);
+  */
 }
 
 module_init(my_init);

driver/counter.dts

@@ -14,6 +14,7 @@
     };
   };
 
+  /*
   fragment@1 {
     target = <&spidev0>;
     __overlay__ {
@@ -37,5 +38,6 @@
       };
     };
   };
+  */
 
 };