From d1afe416d5af0c0c418254afa8d39cb1704f1e81 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Fri, 3 Jul 2020 12:37:37 +0800
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Subject: [PATCH 26/74] backend-drm: Support controlling compositor dynamically
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Use config file to control compositor's state.
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Default config file is "/tmp/.weston_drm.conf", can override with
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"WESTON_DRM_CONFIG" environment.
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Supported configs format is "compositor:<key>:<value>", for
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example:
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echo "compositor:state:sleep" > /tmp/.weston_drm.conf
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echo "compositor:state:block" > /tmp/.weston_drm.conf
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echo "compositor:state:freeze" > /tmp/.weston_drm.conf
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echo "compositor:state:off" > /tmp/.weston_drm.conf
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echo "compositor:state:on" > /tmp/.weston_drm.conf
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echo "compositor:hotplug:off" > /tmp/.weston_drm.conf
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echo "compositor:hotplug:on" > /tmp/.weston_drm.conf
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echo "compositor:hotplug:force" > /tmp/.weston_drm.conf
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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libweston/backend-drm/drm.c | 39 ++++++++++++++++++++++++++++++++++++-
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1 file changed, 38 insertions(+), 1 deletion(-)
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diff --git a/libweston/backend-drm/drm.c b/libweston/backend-drm/drm.c
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index 1d6f7db..53a3d49 100644
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--- a/libweston/backend-drm/drm.c
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+++ b/libweston/backend-drm/drm.c
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@@ -3691,6 +3691,39 @@ config_handle_output(struct drm_backend *b, const char *name,
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}
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}
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+static void
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+config_handle_compositor(struct drm_backend *b, const char *key,
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+ const char *value)
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+{
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+ if (!strncmp(key, "state", strlen("state"))) {
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+ if (!strncmp(value, "sleep", strlen("sleep"))) {
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+ weston_compositor_sleep(b->compositor);
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+ } else if (!strncmp(value, "block", strlen("block"))) {
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+ udev_input_disable(&b->input);
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+ } else if (!strncmp(value, "freeze", strlen("freeze"))) {
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+ udev_input_disable(&b->input);
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+ weston_compositor_offscreen(b->compositor);
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+ } else if (!strncmp(value, "off", strlen("off"))) {
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+ udev_input_disable(&b->input);
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+ weston_compositor_sleep(b->compositor);
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+ } else {
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+ weston_compositor_wake(b->compositor);
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+ weston_compositor_damage_all(b->compositor);
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+
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+ if (b->input.suspended)
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+ udev_input_enable(&b->input);
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+ }
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+ } else if (!strncmp(key, "hotplug", strlen("hotplug"))) {
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+ if (!strncmp(value, "off", strlen("off")))
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+ wl_event_source_fd_update(b->udev_drm_source, 0);
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+ else if (!strncmp(value, "on", strlen("on")))
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+ wl_event_source_fd_update(b->udev_drm_source,
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+ WL_EVENT_READABLE);
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+ else if (!strncmp(value, "force", strlen("force")))
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+ hotplug_timer_handler(b);
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+ }
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+}
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+
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static int
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config_timer_handler(void *data)
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{
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@@ -3722,7 +3755,9 @@ config_timer_handler(void *data)
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/**
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* Parse configs, formated with <type>:<key>:<value>
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- * For example: "output:all:rotate90"
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+ * For example:
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+ * output:all:rotate90
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+ * compositor:state:off
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*/
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while (3 == fscanf(conf_fp,
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"%" STR(MAX_CONF_LEN) "[^:]:"
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@@ -3730,6 +3765,8 @@ config_timer_handler(void *data)
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"%" STR(MAX_CONF_LEN) "s ", type, key, value)) {
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if (!strcmp(type, "output"))
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config_handle_output(b, key, value);
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+ else if (!strcmp(type, "compositor"))
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+ config_handle_compositor(b, key, value);
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}
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fclose(conf_fp);
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--
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2.20.1
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