From 5c015ada908d491fa2f9fa37b83e3fc9c56b4d86 Mon Sep 17 00:00:00 2001
From: Marcin Bukat <marcin.bukat@gmail.com>
Date: Thu, 14 Jun 2018 10:03:07 +0200
Subject: Agptek Rocker: Implement lcd_enable()

In theory this should slightly improve battery life.

Change-Id: Iaf55beb7dbc20e7562017958aeb0386459d49a31
---
 firmware/target/hosted/agptek/lcd-agptek.c | 25 +++++++++++++++++++++++++
 firmware/target/hosted/agptek/lcd-target.h |  6 +++++-
 2 files changed, 30 insertions(+), 1 deletion(-)

(limited to 'firmware/target/hosted')

diff --git a/firmware/target/hosted/agptek/lcd-agptek.c b/firmware/target/hosted/agptek/lcd-agptek.c
index abf89ea9e3..ff5a8146a2 100644
--- a/firmware/target/hosted/agptek/lcd-agptek.c
+++ b/firmware/target/hosted/agptek/lcd-agptek.c
@@ -29,6 +29,7 @@
 #include "lcd.h"
 #include "lcd-target.h"
 #include "backlight-target.h"
+#include "sysfs.h"
 #include "panic.h"
 
 static int fd = -1;
@@ -75,6 +76,30 @@ void lcd_init_device(void)
     }
 }
 
+#ifdef HAVE_LCD_SHUTDOWN
+void lcd_shutdown(void)
+{
+    munmap(framebuffer, FRAMEBUFFER_SIZE);
+    close(fd);
+}
+#endif
+
+void lcd_enable(bool on)
+{
+    const char * const sysfs_fb_blank = "/sys/class/graphics/fb0/blank";
+
+    if (lcd_active() != on)
+    {
+        sysfs_set_int(sysfs_fb_blank, on ? 0 : 1);
+        lcd_set_active(on);
+
+        if (on)
+        {
+            send_event(LCD_EVENT_ACTIVATION, NULL);
+        }
+    }
+}
+
 static void redraw(void)
 {
     ioctl(fd, FBIOPAN_DISPLAY, &vinfo);
diff --git a/firmware/target/hosted/agptek/lcd-target.h b/firmware/target/hosted/agptek/lcd-target.h
index 346644bdfc..b6fcfdb98f 100644
--- a/firmware/target/hosted/agptek/lcd-target.h
+++ b/firmware/target/hosted/agptek/lcd-target.h
@@ -21,6 +21,10 @@
 #ifndef __LCD_TARGET_H__
 #define __LCD_TARGET_H__
 
-extern fb_data *framebuffer; /* see lcd-nwz.c */
+/* Agptek needs special ioctl() to redraw updated framebuffer content */
+#define LCD_OPTIMIZED_UPDATE
+#define LCD_OPTIMIZED_UPDATE_RECT
+
+extern fb_data *framebuffer; /* see lcd-agptek.c */
 #define LCD_FRAMEBUF_ADDR(col, row) (framebuffer + (row)*LCD_WIDTH + (col))
 #endif /* __LCD_TARGET_H__ */
-- 
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