From: Max Staudt <mstaudt@suse.de>
To: b.zolnierkie@samsung.com, linux-fbdev@vger.kernel.org
Cc: michal@markovi.net, sndirsch@suse.com, oneukum@suse.com,
tiwai@suse.com, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, mstaudt@suse.de,
bernhard.rosenkranzer@linaro.org, philm@manjaro.org
Subject: [RFC PATCH v2 11/13] bootsplash: sysfs entries to load and unload files
Date: Wed, 13 Dec 2017 20:47:53 +0100 [thread overview]
Message-ID: <20171213194755.3409-12-mstaudt@suse.de> (raw)
In-Reply-To: <20171213194755.3409-1-mstaudt@suse.de>
Users can use this to replace their splash screen at runtime by writing
a path and filename to /sys/devices/platform/bootsplash.0/load_file and
making sure the splash is enabled.
Notes:
- The path has to be a path in /lib/firmware since request_firmware()
is used to fetch the data.
- When setting the splash from the shell, echo -n has to be used as
any trailing '\n' newline will be interpreted as part of the path.
Writes to /sys/devices/platform/bootsplash.0/drop_splash will cause the
current splash theme to be freed and the console to switch to text mode,
Signed-off-by: Max Staudt <mstaudt@suse.de>
---
.../ABI/testing/sysfs-platform-bootsplash | 32 +++++++++++++
Documentation/bootsplash.rst | 8 ++++
drivers/video/fbdev/core/bootsplash.c | 54 ++++++++++++++++++++++
3 files changed, 94 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-platform-bootsplash b/Documentation/ABI/testing/sysfs-platform-bootsplash
index 742c7b035ded..f8f4b259220e 100644
--- a/Documentation/ABI/testing/sysfs-platform-bootsplash
+++ b/Documentation/ABI/testing/sysfs-platform-bootsplash
@@ -9,3 +9,35 @@ Description:
1: Splash is shown whenever fbcon would show a text console
(i.e. no graphical application is running), and a splash
file is loaded.
+
+What: /sys/devices/platform/bootsplash.0/drop_splash
+Date: Oct 2017
+KernelVersion: 4.14
+Contact: Max Staudt <mstaudt@suse.de>
+Description:
+ Can only be set.
+
+ Any value written will cause the current splash theme file
+ to be unloaded and the text console to be redrawn.
+
+What: /sys/devices/platform/bootsplash.0/load_file
+Date: Oct 2017
+KernelVersion: 4.14
+Contact: Max Staudt <mstaudt@suse.de>
+Description:
+ Can only be set.
+
+ Any value written will cause the splash to be disabled and
+ internal memory structures to be freed.
+
+ A firmware path written will cause a new theme file to be
+ loaded and the current bootsplash to be replaced.
+ The current enabled/disabled status is not touched.
+ If the splash is already active, it will be redrawn.
+
+ The path has to be a path in /lib/firmware since
+ request_firmware() is used to fetch the data.
+
+ When setting the splash from the shell, echo -n has to be
+ used as any trailing '\n' newline will be interpreted as
+ part of the path.
diff --git a/Documentation/bootsplash.rst b/Documentation/bootsplash.rst
index 8bd6805af6bf..d793612ebf2e 100644
--- a/Documentation/bootsplash.rst
+++ b/Documentation/bootsplash.rst
@@ -58,6 +58,14 @@ sysfs run-time configuration
a splash theme file is also loaded.
+``/sys/devices/platform/bootsplash.0/drop_splash``
+ Unload splash data and free memory.
+
+``/sys/devices/platform/bootsplash.0/load_file``
+ Load a splash file from ``/lib/firmware/``.
+ Note that trailing newlines will be interpreted as part of the file name.
+
+
Kconfig
=======
diff --git a/drivers/video/fbdev/core/bootsplash.c b/drivers/video/fbdev/core/bootsplash.c
index 13fcaabbc2ca..16cb0493629d 100644
--- a/drivers/video/fbdev/core/bootsplash.c
+++ b/drivers/video/fbdev/core/bootsplash.c
@@ -251,11 +251,65 @@ static ssize_t splash_store_enabled(struct device *device,
return count;
}
+static ssize_t splash_store_drop_splash(struct device *device,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct splash_file_priv *fp;
+
+ if (!buf || !count || !splash_state.file)
+ return count;
+
+ mutex_lock(&splash_state.data_lock);
+ fp = splash_state.file;
+ splash_state.file = NULL;
+ mutex_unlock(&splash_state.data_lock);
+
+ /* Redraw the text console */
+ schedule_work(&splash_state.work_redraw_vc);
+
+ bootsplash_free_file(fp);
+
+ return count;
+}
+
+static ssize_t splash_store_load_file(struct device *device,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct splash_file_priv *fp, *fp_old;
+
+ if (!count)
+ return 0;
+
+ fp = bootsplash_load_firmware(&splash_state.splash_device->dev,
+ buf);
+
+ if (!fp)
+ return -ENXIO;
+
+ mutex_lock(&splash_state.data_lock);
+ fp_old = splash_state.file;
+ splash_state.splash_fb = NULL;
+ splash_state.file = fp;
+ mutex_unlock(&splash_state.data_lock);
+
+ /* Update the splash or text console */
+ schedule_work(&splash_state.work_redraw_vc);
+
+ bootsplash_free_file(fp_old);
+ return count;
+}
+
static DEVICE_ATTR(enabled, 0644, splash_show_enabled, splash_store_enabled);
+static DEVICE_ATTR(drop_splash, 0200, NULL, splash_store_drop_splash);
+static DEVICE_ATTR(load_file, 0200, NULL, splash_store_load_file);
static struct attribute *splash_dev_attrs[] = {
&dev_attr_enabled.attr,
+ &dev_attr_drop_splash.attr,
+ &dev_attr_load_file.attr,
NULL
};
--
2.12.3
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2017-12-13 19:48 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-13 19:47 [RFC PATCH v2 00/13] Kernel based bootsplash Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 01/13] bootsplash: Initial implementation showing black screen Max Staudt
2017-12-13 23:55 ` Randy Dunlap
2017-12-14 15:37 ` Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 02/13] bootsplash: Add file reading and picture rendering Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 03/13] bootsplash: Flush framebuffer after drawing Max Staudt
2017-12-13 21:35 ` Daniel Vetter
2017-12-14 15:36 ` Max Staudt
2017-12-19 12:23 ` Daniel Vetter
2017-12-19 13:34 ` Max Staudt
2017-12-19 13:57 ` Daniel Vetter
2017-12-19 14:07 ` Oliver Neukum
2017-12-31 12:53 ` Alan Cox
2018-01-03 18:04 ` Max Staudt
2017-12-19 15:41 ` Max Staudt
2017-12-19 16:02 ` Daniel Vetter
2017-12-19 16:23 ` Max Staudt
2017-12-20 9:45 ` Daniel Vetter
2017-12-19 16:09 ` Daniel Vetter
2017-12-19 16:26 ` Max Staudt
2017-12-19 21:01 ` Ray Strode
2017-12-20 13:14 ` Max Staudt
2017-12-20 15:35 ` Ray Strode
2017-12-20 16:52 ` Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 04/13] bootsplash: Add corner positioning Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 05/13] bootsplash: Add animation support Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 06/13] vt: Redraw bootsplash fully on console_unblank Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 07/13] vt: Add keyboard hook to disable bootsplash Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 08/13] sysrq: Disable bootsplash on SAK Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 09/13] fbcon: Disable bootsplash on oops Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 10/13] Documentation: Add bootsplash main documentation Max Staudt
2017-12-13 19:47 ` Max Staudt [this message]
2017-12-13 19:47 ` [RFC PATCH v2 12/13] tools/bootsplash: Add a basic splash file creation tool Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 13/13] tools/bootsplash: Add script and data to create sample file Max Staudt
2017-12-13 19:52 ` [RFC PATCH v2 00/13] Kernel based bootsplash Max Staudt
2017-12-19 16:16 ` Daniel Vetter
2017-12-19 17:04 ` Max Staudt
2017-12-19 17:26 ` Daniel Vetter
2017-12-19 18:40 ` Max Staudt
2017-12-20 9:43 ` Daniel Vetter
2017-12-20 10:06 ` Neil Armstrong
2017-12-20 10:14 ` Daniel Vetter
2017-12-20 14:55 ` Max Staudt
2017-12-20 15:11 ` Daniel Vetter
2017-12-20 15:19 ` Daniel Vetter
2017-12-20 15:22 ` Daniel Vetter
2017-12-20 16:23 ` Max Staudt
2017-12-20 16:15 ` Max Staudt
2017-12-31 12:44 ` Alan Cox
2018-01-03 18:00 ` Max Staudt
2017-12-20 14:16 ` Max Staudt
2017-12-20 14:10 ` Max Staudt
2017-12-31 12:35 ` Alan Cox
2018-01-03 17:56 ` Max Staudt
2017-12-19 20:30 ` Ray Strode
2017-12-20 13:03 ` Max Staudt
2017-12-20 15:21 ` Ray Strode
2017-12-20 16:44 ` Max Staudt
2017-12-21 14:51 ` Ray Strode
2017-12-21 16:32 ` Max Staudt
2017-12-20 11:08 ` Johannes Thumshirn
2017-12-20 11:22 ` Daniel Stone
2017-12-20 12:48 ` Johannes Thumshirn
2017-12-29 17:13 ` Jani Nikula
2018-01-03 17:38 ` Max Staudt
2017-12-21 9:48 ` Daniel Vetter
2017-12-21 16:52 ` Max Staudt
2017-12-21 15:00 ` Philip Müller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20171213194755.3409-12-mstaudt@suse.de \
--to=mstaudt@suse.de \
--cc=b.zolnierkie@samsung.com \
--cc=bernhard.rosenkranzer@linaro.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=linux-fbdev@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=michal@markovi.net \
--cc=oneukum@suse.com \
--cc=philm@manjaro.org \
--cc=sndirsch@suse.com \
--cc=tiwai@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).