drivers: display: ssd1306: replace SSD1306_REVERSE_MODE by property

When multiple devices are connected, the SSD1306_REVERSE_MODE setting
cannot switch for each device.
Add an equivalent setting to the devicetree properties to replace it.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

drivers/display/Kconfig.ssd1306

@@ -35,9 +35,4 @@ config SSD1306_SH1106_COMPATIBLE
 
 endchoice
 
-config SSD1306_REVERSE_MODE
-	bool "SSD1306 reverse mode"
-	help
-	  SSD1306 reverse video mode.
-
 endif # SSD1306

drivers/display/ssd1306.c

@@ -47,6 +47,7 @@ struct ssd1306_config {
 	bool segment_remap;
 	bool com_invdir;
 	bool com_sequential;
+	bool color_inversion;
 	int ready_time_ms;
 };
 
@@ -340,11 +341,8 @@ static int ssd1306_init_device(const struct device *dev)
 
 	uint8_t cmd_buf[] = {
 		SSD1306_SET_ENTIRE_DISPLAY_OFF,
-#ifdef CONFIG_SSD1306_REVERSE_MODE
-		SSD1306_SET_REVERSE_DISPLAY,
-#else
-		SSD1306_SET_NORMAL_DISPLAY,
-#endif
+		(config->color_inversion ? SSD1306_SET_REVERSE_DISPLAY
+					 : SSD1306_SET_NORMAL_DISPLAY),
 	};
 
 	/* Reset if pin connected */
@@ -439,6 +437,7 @@ static const struct ssd1306_config ssd1306_config = {
 	.com_invdir = DT_INST_PROP(0, com_invdir),
 	.com_sequential = DT_INST_PROP(0, com_sequential),
 	.prechargep = DT_INST_PROP(0, prechargep),
+	.color_inversion = DT_INST_PROP(0, inversion_on),
 	.ready_time_ms = DT_INST_PROP(0, ready_time_ms),
 };
 

dts/bindings/display/solomon,ssd1306fb-common.yaml

@@ -49,6 +49,10 @@ properties:
       If connected directly the MCU pin should be configured
       as active low.
 
+  inversion-on:
+    type: boolean
+    description: Turn on display color inverting
+
   ready-time-ms:
     type: int
     default: 10