[EGIT] [core/enlightenment] master 01/02: backlight - support backlight on non-lid panels and bl_power too

[Carsten Haitzler]

raster pushed a commit to branch master.

http://git.enlightenment.org/core/enlightenment.git/commit/?id=63bc2a809359d09e75268a7ac237f63313a26153

commit 63bc2a809359d09e75268a7ac237f63313a26153
Author: Carsten Haitzler (Rasterman) <ras...@rasterman.com>
Date:   Sat Sep 5 11:34:14 2020 +0100

    backlight - support backlight on non-lid panels and bl_power too
    
    i didn't know bl_ppower existed... i found a device that exposes this
    sysfs node and it seems it's a good idea to swizzle it too in addition
    to brightness. so fix that and also fix e's backlight handling to find
    backlight devices for non-lid panels marked to have a backlight ... i
    have such a device here. this makes backlight controls work in this
    case.
---
 src/bin/e_backlight.c               |  4 ++++
 src/bin/system/e_system_backlight.c | 39 +++++++++++++++++++++++++++++++++++--
 2 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/src/bin/e_backlight.c b/src/bin/e_backlight.c
index b1ccd7d6a..cb5962e76 100644
--- a/src/bin/e_backlight.c
+++ b/src/bin/e_backlight.c
@@ -350,6 +350,10 @@ _backlight_devices_screen_lid_get(void)
      {
         if (sc->info.is_lid) return sc;
      }
+   EINA_LIST_FOREACH(e_randr2->screens, l, sc)
+     {
+        if (sc->info.backlight) return sc;
+     }
    return NULL;
 }
 
diff --git a/src/bin/system/e_system_backlight.c 
b/src/bin/system/e_system_backlight.c
index 053a5997c..bb5ee7a56 100644
--- a/src/bin/system/e_system_backlight.c
+++ b/src/bin/system/e_system_backlight.c
@@ -21,8 +21,20 @@ _light_set(Light *lig, int val)
    lig->val = nval;
 #ifdef HAVE_EEZE
    char buf[PATH_MAX];
+   int fd;
+   if (val == 0)
+     {
+        snprintf(buf, sizeof(buf), "%s/bl_power", lig->dev);
+        fd = open(buf, O_WRONLY);
+        if (fd >= 0)
+          {
+             if (write(fd, "4", 1) <= 0)
+               ERR("Write failed of [%s] to [%s]\n", "4", buf);
+             close(fd);
+          }
+     }
    snprintf(buf, sizeof(buf), "%s/brightness", lig->dev);
-   int fd = open(buf, O_WRONLY);
+   fd = open(buf, O_WRONLY);
    if (fd >= 0)
      {
         char buf2[32];
@@ -31,6 +43,17 @@ _light_set(Light *lig, int val)
           ERR("Write failed of [%s] to [%s]\n", buf2, buf);
         close(fd);
      }
+   if (val != 0)
+     {
+        snprintf(buf, sizeof(buf), "%s/bl_power", lig->dev);
+        fd = open(buf, O_WRONLY);
+        if (fd >= 0)
+          {
+             if (write(fd, "0", 1) <= 0)
+               ERR("Write failed of [%s] to [%s]\n", "0", buf);
+             close(fd);
+          }
+     }
 #elif defined(__FreeBSD_kernel__)
    sysctlbyname(lig->dev, NULL, NULL, &(lig->val), sizeof(lig->val));
 #endif
@@ -41,7 +64,19 @@ _light_get(Light *lig)
 {
 #ifdef HAVE_EEZE
    const char *s;
-   s = eeze_udev_syspath_get_sysattr(lig->dev, "brightness");
+   s = eeze_udev_syspath_get_sysattr(lig->dev, "bl_power");
+   if (s)
+     {
+        if (atoi(s) != 0)
+          {
+             lig->val = 0;
+             eina_stringshare_del(s);
+             return;
+          }
+        eina_stringshare_del(s);
+     }
+   s = eeze_udev_syspath_get_sysattr(lig->dev, "actual_brightness");
+   if (!s) s = eeze_udev_syspath_get_sysattr(lig->dev, "brightness");
    if (s)
      {
         lig->val = atoi(s);

--