| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull fbdev updates from Bartlomiej Zolnierkiewicz:
- fix for font color when console is switched to another fb driver
- deferred probing fixes for simplefb driver
- preparations to add support of an optional GPIO to enable panel for
ARM CLCD driver
- some improvements for ssd1307fb driver
- cleanups for OMAP fbdev LCD drivers
- misc fixes/cleanups for various fb drivers
* tag 'fbdev-v4.11' of git://github.com/bzolnier/linux: (30 commits)
video: fbdev: fsl-diu-fb: fix spelling mistake "palette"
fbdev: ssd1307fb: include linux/gpio/consumer.h
video: fbdev: fsl-diu-fb: remove impossible condition
video: fbdev: amifb: remove impossible condition
fbdev/ssd1307fb: clear screen in probe
fbdev/ssd1307fb: add support to enable VBAT
fbdev: ssd1307fb: Make reset gpio devicetree property optional
fbdev: ssd1307fb: Remove reset-active-low from the DT binding document
fbdev: ssd1307fb: Start to use gpiod API for reset gpio
video: fbdev: sh_mobile_lcdcfb: fix error return code in sh_mobile_lcdc_probe()
video: fbdev: offb: switch to using for_each_node_by_type
video/console: use setup_timer and mod_timer instead of init_timer
fbdev: omap/lcd: Make callbacks optional
fbdev: omap/lcd: Staticize non-exported lcd_panel structs
fbdev: omap/lcd: Remove no-op driver callbacks
video/mbx: use simple_open()
video: fbdev: stifb: handle NULL return value from ioremap_nocache
video: fbdev: pmagb-b-fb: Remove bad `__init' annotation
video: fbdev: pmag-ba-fb: Remove bad `__init' annotation
video: ARM CLCD: use panel device node for getting backlight and mode
...
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Use setup_timer and mod_timer functions instead of initializing timer with
the function init_timer and data fields.
Signed-off-by: Jan Stourac <xstourac@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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fbcon can deal with vc_hi_font_mask (the upper 256 chars) and adjust
the vc attrs dynamically when vc_hi_font_mask is changed at
fbcon_init(). When the vc_hi_font_mask is set, it remaps the attrs in
the existing console buffer with one bit shift up (for 9 bits), while
it remaps with one bit shift down (for 8 bits) when the value is
cleared. It works fine as long as the font gets updated after fbcon
was initialized.
However, we hit a bizarre problem when the console is switched to
another fb driver (typically from vesafb or efifb to drmfb). At
switching to the new fb driver, we temporarily rebind the console to
the dummy console, then rebind to the new driver. During the
switching, we leave the modified attrs as is. Thus, the new fbcon
takes over the old buffer as if it were to contain 8 bits chars
(although the attrs are still shifted for 9 bits), and effectively
this results in the yellow color texts instead of the original white
color, as found in the bugzilla entry below.
An easy fix for this is to re-adjust the attrs before leaving the
fbcon at con_deinit callback. Since the code to adjust the attrs is
already present in the current fbcon code, in this patch, we simply
factor out the relevant code, and call it from fbcon_deinit().
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1000619
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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The impact of the persistent scrollback feature on the code size is
rather small, so the config option is removed. The feature stays
disabled by default and can be enabled by using the boot command line
parameter 'vgacon.scrollback_persistent=1' or by setting
VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT=y.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Suggested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add a scrollback buffers for each VGA console. The benefit is that
the scrollback history is not flushed when switching between consoles
but is persistent.
The buffers are allocated on demand when a new console is opened.
This breaks tools like clear_console that rely on flushing the
scrollback history by switching back and forth between consoles
which is why this feature is disabled by default.
Use the escape sequence \e[3J instead for flushing the buffer.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Reviewed-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This new callback is in preparation for persistent scrollback buffer
support for VGA consoles.
With a single scrollback buffer for all consoles, we could flush the
buffer just by invocating consw->con_switch(). But when each VGA console
has its own scrollback buffer, we need a new callback to tell the
video console driver which buffer to flush.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Reviewed-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This refactoring is in preparation for persistent scrollback
support for VGA console.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Reviewed-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This was entirely automated, using the script by Al:
PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
$(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)
to do the replacement at the end of the merge window.
Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here's the tty/serial patchset for 4.10-rc1.
It's been a quiet kernel cycle for this subsystem, just a small number
of changes. A few new serial drivers, and some cleanups to the old
vgacon logic, and other minor serial driver changes as well.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (54 commits)
serial: 8250_mid fix calltrace when hotplug 8250 serial controller
console: Move userspace I/O out of console_lock to fix lockdep warning
tty: nozomi: avoid sprintf buffer overflow
serial: 8250_pci: Detach low-level driver during PCI error recovery
serial: core: don't check port twice in a row
mxs-auart: count FIFO overrun errors
serial: 8250_dw: Add support for IrDA SIR mode
serial: 8250: Expose set_ldisc function
serial: 8250: Add IrDA to UART capabilities
serial: 8250_dma: power off device after TX is done
serial: 8250_port: export serial8250_rpm_{get|put}_tx()
serial: sunsu: Free memory when probe fails
serial: sunhv: Free memory when remove() is called
vt: fix Scroll Lock LED trigger name
tty: typo in comments in drivers/tty/vt/keyboard.c
tty: amba-pl011: Add earlycon support for SBSA UART
tty: nozomi: use permission-specific DEVICE_ATTR variants
tty: serial: Make the STM32 serial port depend on it's arch
serial: ifx6x60: Free memory when probe fails
serial: ioc4_serial: Free memory when kzalloc fails during probe
...
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These macros:
* CAN_LOAD_EGA_FONTS
* CAN_LOAD_PALETTE
* TRIDENT_GLITCH
* VGA_CAN_DO_64KB
* SLOW_VGA
are either always set or always unset. They come from the linux 2.1
times. And given nobody switched them to some configurable options, I
assume nobody actually uses them.
So remove the macros and leave in place appropriate branches of the
conditional code.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: <linux-fbdev@vger.kernel.org>
Cc: <linux-doc@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These variables:
* vga_can_do_color
* vgacon_text_mode_force
* vga_font_is_default
* vga_hardscroll_enabled
* vga_hardscroll_user_enable
* vga_init_done
* vga_is_gfx
* vga_palette_blanked
* vga_512_chars
are used exclusively as a boolean value, so make them really a bool.
Remove also useless "? true : false".
__read_mostly annotations removed too as they obfuscate the code and I
doubt they improve anything measurable given the variables are used
from .con_scroll, .con_startup and such.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: <linux-fbdev@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The code is mirrorred in scrolldelta implementations of both vgacon
and sisusb. Let's move the code to a separate helper where we will
perform a common cleanup and further changes.
While we are moving the code, make it linear and save one indentation
level. This is done by returning from the "!lines" then-branch
immediatelly. This allows flushing the else-branch 1 level to the
left, obviously.
Few more new lines and comments were added too.
And do not forget to export the helper function given sisusb can be
built as module.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: <linux-fbdev@vger.kernel.org>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Scrolling helpers scrup and scrdown both accept 'top' and 'bottom' as
unsigned int. Number of lines 'nr' is accepted as int, but all callers
pass down unsigned too. So change the type of 'nr' to unsigned too.
Now, promote unsigned int from the helpers up to the con_scroll
hook which actually accepted all those as signed int.
Next, the 'dir' parameter can have only two values and we define
constants for that: SM_UP and SM_DOWN. Switch them to enum and do
proper type checking on 'dir' too.
Finally, document the behaviour of the hook.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: <linux-fbdev@vger.kernel.org>
Cc: <linux-usb@vger.kernel.org>
Cc: <linux-parisc@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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OpenRISC does not support VGA console, so prevent that kconfig symbol
from being enabled for OpenRISC, thus fixing these build errors:
drivers/built-in.o: In function `vgacon_save_screen':
vgacon.c:(.text+0x20e0): undefined reference to `screen_info'
vgacon.c:(.text+0x20e8): undefined reference to `screen_info'
drivers/built-in.o: In function `vgacon_init':
vgacon.c:(.text+0x284c): undefined reference to `screen_info'
vgacon.c:(.text+0x2850): undefined reference to `screen_info'
drivers/built-in.o: In function `vgacon_startup':
vgacon.c:(.text+0x28d8): undefined reference to `screen_info'
drivers/built-in.o:vgacon.c:(.text+0x28f0): more undefined references to `screen_info' follow
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Chen Gang <gang.chen@asianux.com>
Cc: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Stafford Horne <shorne@gmail.com>
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Namely convert:
* IS_FG -> con_is_fg
* DO_UPDATE -> con_should_update
* CON_IS_VISIBLE -> con_is_visible
DO_UPDATE was a weird name for a yes/no answer, so the new name is
con_should_update.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: linux-usb@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It is never called since commit 81732c3b2fede (tty vt: Fix line
garbage in virtual console on command line edition) in 3.7. So remove
all the callbacks.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: linux-usb@vger.kernel.org
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* allow NULL consw->con_set_palette (some consoles define an empty
hook)
* => remove empty hooks now
* return value of consw->con_set_palette is never checked => make the
function void
* document consw->con_set_palette a bit
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: linux-usb@vger.kernel.org
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* allow NULL consw->con_scrolldelta (some consoles define an empty
hook)
* => remove empty hooks now
* return value of consw->con_scrolldelta is never checked => make the
function void
* document consw->con_scrolldelta a bit
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: linux-usb@vger.kernel.org
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This means all ->con_set_palette have to have the second parameter
const too now.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit 27a4c827c34ac4256a190cc9d24607f953c1c459
fbcon: use the cursor blink interval provided by vt
two attempts have been made at fixing a possible hang caused by
cursor_timer_handler. That function registers a timer to be triggered at
"jiffies + fbcon_ops.cur_blink_jiffies".
A new case had been encountered during initialisation of clcd-pl11x:
fbcon_fb_registered
do_fbcon_takeover
-> do_register_con_driver
fbcon_startup
(A) add_cursor_timer (with cur_blink_jiffies = 0)
-> do_bind_con_driver
visual_init
fbcon_init
(B) cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
If we take an softirq anywhere between A and B (and we do),
cursor_timer_handler executes indefinitely.
Instead of patching all possible paths that lead to this case one at a
time, fix the issue at the source and initialise cur_blink_jiffies to
200ms when allocating fbcon_ops. This was its default value before
aforesaid commit. fbcon_cursor or fbcon_init will refine this value
downstream.
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Cc: <stable@vger.kernel.org> # v4.2
Tested-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Since commit 27a4c827c34ac4256a190cc9d24607f953c1c459
fbcon: use the cursor blink interval provided by vt
a PPC64LE kernel fails to boot when fbcon_add_cursor_timer uses an
uninitialized ops->cur_blink_jiffies. Prevent by initializing
in fbcon_init before the call to info->fbops->fb_set_par.
Reported-and-tested-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Cc: <stable@vger.kernel.org> [v4.2]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev updates from Tomi Valkeinen:
"Minor fixes and cleanups"
* tag 'fbdev-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
video: fbdev: atmel_lcdfb: remove useless include
video: fbdev: pxa168fb: Use devm_clk_get
fbdev: ssd1307fb: fix error return code
fbdev: fix snprintf() limit in show_bl_curve()
video: fbdev: s3c-fb: Constify platform_device_id
video: fbdev: atmel: fix warning for const return value
video: fbdev: Drop owner assignment from platform_driver
video: fbdev: Drop owner assignment from i2c_driver
fbdev: remove unnecessary memset in vfb
framebuffer: disable vgacon on microblaze arch
fbdev: udlfb: remove unneeded initialization in few places
fbdev: Allow compile test of GPIO consumers if !GPIOLIB
fbdev: fix cea_modes array size
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Fix an allmodconfig link failer on microblaze:
drivers/built-in.o: In function `vgacon_save_screen':
drivers/video/console/.tmp_vgacon.o:(.text+0x8fc10):
undefined reference to `screen_info'
Disable vgacon on microblaze because the symbol
struct screen_info screen_info;
is not defined for the microblaze arch.
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Architectures which support VGA console must define screen_info
structurture from "uapi/linux/screen_info.h". Otherwise undefined
symbol error occurs. Usually it's defined in "setup.c" for each
architecture.
If an architecture does not support VGA console (ARC's case) there are 2
ways: define a dummy instance of screen_info or add a negative
dependency for VGA_CONSOLE in to prevent selecting this option.
I've implemented the second way. However the best solution is to add
HAVE_VGA_CONSOLE option for targets which support VGA console. Then
turn off VGA_CONSOLE by default and add dependency to HAVE_VGA_CONSOLE.
But right now it's better to just add a negative dependency for ARC and
then consider how to collaborate about this issue with maintainers of
other architectures.
Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Jaya Kumar <jayalk@intworks.biz>
Cc: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A sun7i-a20-olinuxino-micro fails to boot when kernel parameter
vt.global_cursor_default=0. The value is copied to vc->vc_deccm
causing the initialization of ops->cur_blink_jiffies to be skipped.
Unconditionally initialize it.
Reported-and-tested-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here's the tty and serial driver patches for 4.2-rc1.
A number of individual driver updates, some code cleanups, and other
minor things, full details in the shortlog.
All have been in linux-next for a while with no reported issues"
* tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (152 commits)
Doc: serial-rs485.txt: update RS485 driver interface
Doc: tty.txt: remove mention of the BKL
MAINTAINERS: tty: add serial docs directory
serial: sprd: check for NULL after calling devm_clk_get
serial: 8250_pci: Correct uartclk for xr17v35x expansion chips
serial: 8250_pci: Add support for 12 port Exar boards
serial: 8250_uniphier: add bindings document for UniPhier UART
serial: core: cleanup in uart_get_baud_rate()
serial: stm32-usart: Add STM32 USART Driver
tty/serial: kill off set_irq_flags usage
tty: move linux/gsmmux.h to uapi
doc: dt: add documentation for nxp,lpc1850-uart
serial: 8250: add LPC18xx/43xx UART driver
serial: 8250_uniphier: add UniPhier serial driver
serial: 8250_dw: support ACPI platforms with integrated DMA engine
serial: of_serial: check the return value of clk_prepare_enable()
serial: of_serial: use devm_clk_get() instead of clk_get()
serial: earlycon: Add support for big-endian MMIO accesses
serial: sirf: use hrtimer for data rx
serial: sirf: correct the fifo empty_bit
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Commit 27a4c827c34a ("fbcon: use the cursor blink interval provided by
vt") unconditionally removes the cursor blink timer. Unfortunately that
wreaks havoc under some circumstances. An easily reproducible way is to
use both the framebuffer console and a debug serial port as the console
output for kernel messages (e.g. "console=ttyS0 console=tty1" on the
kernel command-line. Upon boot this triggers a warning from within the
del_timer_sync() function because it is called from IRQ context:
[ 5.070096] ------------[ cut here ]------------
[ 5.070110] WARNING: CPU: 0 PID: 0 at ../kernel/time/timer.c:1098 del_timer_sync+0x4c/0x54()
[ 5.070115] Modules linked in:
[ 5.070120] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.0-rc4-next-20150519 #1
[ 5.070123] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[ 5.070142] [] (unwind_backtrace) from [] (show_stack+0x10/0x14)
[ 5.070156] [] (show_stack) from [] (dump_stack+0x70/0xbc)
[ 5.070164] [] (dump_stack) from [] (warn_slowpath_common+0x74/0xb0)
[ 5.070169] [] (warn_slowpath_common) from [] (warn_slowpath_null+0x1c/0x24)
[ 5.070174] [] (warn_slowpath_null) from [] (del_timer_sync+0x4c/0x54)
[ 5.070183] [] (del_timer_sync) from [] (fbcon_del_cursor_timer+0x2c/0x40)
[ 5.070190] [] (fbcon_del_cursor_timer) from [] (fbcon_cursor+0x9c/0x180)
[ 5.070198] [] (fbcon_cursor) from [] (hide_cursor+0x30/0x98)
[ 5.070204] [] (hide_cursor) from [] (vt_console_print+0x2a8/0x340)
[ 5.070212] [] (vt_console_print) from [] (call_console_drivers.constprop.23+0xc8/0xec)
[ 5.070218] [] (call_console_drivers.constprop.23) from [] (console_unlock+0x498/0x4f0)
[ 5.070223] [] (console_unlock) from [] (vprintk_emit+0x1f0/0x508)
[ 5.070228] [] (vprintk_emit) from [] (vprintk_default+0x24/0x2c)
[ 5.070234] [] (vprintk_default) from [] (printk+0x70/0x88)
After which the system starts spewing all kinds of weird and seemingly
unrelated error messages.
This commit fixes this by restoring the condition under which the call
to fbcon_del_cursor_timer() happens.
Reported-by: Daniel Stone <daniel@fooishbar.org>
Reported-by: Kevin Hilman <khilman@kernel.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tested-by: Andrew Vagin <avagin@virtuozzo.com>
Tested-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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vt now provides a cursor blink interval via vc_data. Use this
interval instead of the currently hardcoded 200 msecs. Store it in
fbcon_ops to avoid locking the console in cursor_timer_handler().
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use kernel.h macro definition.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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commit 1fa0b29f3a43 ("fbdev: Kill Atari vblank cursor blinking")
rendered vbl_cursor_cnt and therefore CURSOR_DRAW_DELAY unused in fbcon.c,
so remove them.
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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PA-RISC already handled the dummy console screen size selection in
Kconfig, so generalize this to other platforms.
ARM keeps on using screen_info, which is filled in by
platform-specific code, or from ATAGS.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Various fb drivers register themselves before module_init so as to have a
console as early as possible, this is of little use if fbcon does not
initialize early too.
Fbcon cannot initialize earlier then fs_initcall, because then the creation
of /sys/class/graphics/fbcon will fail.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Resolve shadow warnings that appear in W=2 builds by renaming
the "state" global to "vgastate".
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Since strsep is used to tokenize the options string, after each option
match the code should use "continue" to get the next token from strsep.
This patch applies this pattern consistently.
Previously, for "scrollback:" and "map:" the parse code would return
(unconditionally: strsep ensures *options != ','), causing any
following option to be ignored, while for "vc:" the parse code would
go on to parse further options within the same token, which could lead
to invalid input being accepted.
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The framebuffer code uses the current background color to fill the border
when switching consoles, however, this results in inconsistent behavior.
For example:
- start Midnigh Commander
- the border is black
- switch to another console and switch back
- the border is cyan
- type something into the command line in mc
- the border is cyan
- switch to another console and switch back
- the border is black
- press F9 to go to menu
- the border is black
- switch to another console and switch back
- the border is dark blue
When switching to a console with Midnight Commander, the border is random
color that was left selected by the slang subsystem.
This patch fixes this inconsistency by always using black as the
background color when switching consoles.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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git://anongit.freedesktop.org/drm-intel into drm-next
First round of fixes for 3.16-rc, mostly cc: stable, and the vt/vgacon
fixes from Daniel [1] to avoid hangs and unclaimed register errors on
module load/reload.
* tag 'drm-intel-fixes-2014-06-17' of git://anongit.freedesktop.org/drm-intel:
drm/i915/bdw: remove erroneous chv specific workarounds from bdw code
drm/i915: fix possible refcount leak when resetting forcewake
drm/i915: Reorder semaphore deadlock check
drm/i95: Initialize active ring->pid to -1
drm/i915: set backlight duty cycle after backlight enable for gen4
drm/i915: Avoid div-by-zero when pixel_multiplier is zero
drm/i915: Disable FBC by default also on Haswell and later
drm/i915: Kick out vga console
drm/i915: Fixup global gtt cleanup
vt: Don't ignore unbind errors in vt_unbind
vt: Fix up unregistration of vt drivers
vt: Fix replacement console check when unbinding
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Touching the VGA resources on an IVB EFI machine causes hard hangs when
we then kick out the efifb. Ouch.
Apparently this also prevents unclaimed register errors on hsw and
hard machine hangs on my i855gm when trying to unbind fbcon.
Also, we want this to make I915_FBDEV=n safe.
v2: Rebase and pimp commit message.
v3: We also need to unregister the vga console, otherwise the unbind
of the fb console before module unload might resurrect it again.
v4: Ignore errors when the vga console is already unregistered - this
can happen when e.g. reloading i915.ko.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67813
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-fbdev@vger.kernel.org
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into next
Pull main fbdev changes from Tomi Valkeinen:
"Mainly fixes and small improvements. The biggest change seems to be
backlight control support for mx3fb"
* tag 'fbdev-main-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (31 commits)
drivers/video/fbdev/fb-puv3.c: Add header files for function unifb_mmap
video: fbdev: s3fb.c: Fix for possible null pointer dereference
video: fbdev: grvga.c: Fix for possible null pointer dereference
matroxfb: perform a dummy read of M_STATUS
video: of: display_timing: fix default native-mode setting
video: delete unneeded call to platform_get_drvdata
video: mx3fb: Add backlight control support
video: omap: delete support for early fbmem allocation
video: of: display_timing: remove two unsafe error messages
fbdev: fbmem: remove positive test on unsigned values
fbcon: Fix memory leak in con2fb_release_oldinfo()
video: Kconfig: Add a dependency to the Goldfish framebuffer driver
video: exynos: Add a dependency to the menu
video: mx3fb: Use devm_kzalloc
video/nuc900: allow modular build
video: atmel needs FB_BACKLIGHT
video: export fb_prepare_logo
video/mbx: fix building debugfs support
video/omap: fix modular build
video: clarify I2C dependencies
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kmemleak reported a memory leak as below.
unreferenced object 0xffff8800dab6d8d8 (size 96):
comm "swapper/0", pid 1, jiffies 4294877598 (age 38.483s)
hex dump (first 32 bytes):
00 00 00 00 00 01 00 00 08 00 00 00 10 00 00 00 ................
07 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff814e8f2e>] kmemleak_alloc+0x4e/0xb0
[<ffffffff811a0600>] __kmalloc+0x280/0x320
[<ffffffff81309b61>] soft_cursor+0x231/0x290
[<ffffffff81309393>] bit_cursor+0x613/0x650
[<ffffffff8130556b>] fbcon_cursor+0x13b/0x1c0
[<ffffffff813755f8>] hide_cursor+0x28/0xa0
[<ffffffff81376e98>] redraw_screen+0x168/0x240
[<ffffffff81303891>] fbcon_prepare_logo+0x381/0x420
[<ffffffff81303c7e>] fbcon_init+0x34e/0x590
[<ffffffff81375828>] visual_init+0xb8/0x120
[<ffffffff81377c93>] do_bind_con_driver+0x163/0x380
[<ffffffff81378494>] do_take_over_console+0x114/0x1c0
[<ffffffff81303f23>] do_fbcon_takeover+0x63/0xd0
[<ffffffff813086dd>] fbcon_event_notify+0x68d/0x7e0
[<ffffffff814ff7ac>] notifier_call_chain+0x4c/0x70
[<ffffffff8108c85d>] __blocking_notifier_call_chain+0x4d/0x70
This memory leak cause is, fbcon_ops's cursor_src is allocated in
soft_cursor() but not released in con2fb_release_oldinfo().
so, cursor_src is needed to be released when oldinfo is going to be
released.
Signed-off-by: Masami Ichikawa <masami256@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The vc_data.vc_uni_pagedir filed is currently long int, supposedly to
be served generically. This, however, leads to lots of cast to
pointer, and rather it worsens the readability significantly.
Actually, we have now only a single uni_pagedir map implementation,
and this won't change likely. So, it'd be much more simple and
error-prone to just use the exact pointer for struct uni_pagedir
instead of long.
Ditto for vc_uni_pagedir_loc. It's a pointer to the uni_pagedir, thus
it can be changed similarly to the exact type.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The vgacon driver prepares a two element array of uni_pagedir_loc and
uses the second item as its own reference counter for sharing the
uni_pagedir. And the code assumes blindly that the second item is
available if the assigned vc_uni_pagedir isn't the standard one, which
might be wrong (although currently it's so).
This patch fixes that wrong assumption, and gives a slight cleanup
along with it: namely, instead of array, just give the uni_pagedir_loc
and a separate refcount variable. It makes the code a bit more
understandable at first glance.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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When FB_EVENT_FB_UNBIND is sent, fbcon has two paths, one path taken
when there is another frame buffer to switch any affected vcs to and
another path when there isn't.
In the case where there is another frame buffer to use,
fbcon_fb_unbind calls set_con2fb_map to remap all of the affected vcs
to the replacement frame buffer. set_con2fb_map will eventually call
con2fb_release_oldinfo when the last vcs gets unmapped from the old
frame buffer.
con2fb_release_oldinfo frees the fbcon data that is hooked off of the
fb_info structure, including the cursor timer.
In the case where there isn't another frame buffer to use,
fbcon_fb_unbind simply calls fbcon_unbind, which doesn't clear the
con2fb_map or free the fbcon data hooked from the fb_info
structure. In particular, it doesn't stop the cursor blink timer. When
the fb_info structure is then freed, we end up with a timer queue
pointing into freed memory and "bad things" start happening.
This patch first changes con2fb_release_oldinfo so that it can take a
NULL pointer for the new frame buffer, but still does all of the
deallocation and cursor timer cleanup.
Finally, the patch tries to replicate some of what set_con2fb_map does
by clearing the con2fb_map for the affected vcs and calling the
modified con2fb_release_info function to clean up the fb_info structure.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The built-in ROM fonts lack many necessary ASCII characters, which is
why it makes sens to prefer the Linux fonts instead if they are
available. This makes consoles on STI graphics cards which are not
supported by the stifb driver (e.g. Visualize FXe) looks much nicer.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v3.13
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arm64 is unlikely to have a VGA console and does not export screen_info
causing build failures if the driver is build, for example in all*config.
Add a dependency on !ARM64 to prevent this.
This list is getting quite long, it may be easier to depend on a symbol
which architectures that do support the driver can select.
Signed-off-by: Mark Brown <broonie@linaro.org>
[tomi.valkeinen@ti.com: moved && to first modified line]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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kmemleak reported a memory leak as below.
unreferenced object 0xffff880036ca84c0 (size 16):
comm "swapper/0", pid 1, jiffies 4294877407 (age 4434.633s)
hex dump (first 16 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ................
backtrace:
[<ffffffff814ed01e>] kmemleak_alloc+0x4e/0xb0
[<ffffffff8118913c>] __kmalloc+0x1fc/0x290
[<ffffffff81302c9e>] bit_cursor+0x24e/0x6c0
[<ffffffff812ff2f4>] fbcon_cursor+0x154/0x1d0
[<ffffffff813675d8>] hide_cursor+0x28/0xa0
[<ffffffff81368acf>] update_region+0x6f/0x90
[<ffffffff81300268>] fbcon_switch+0x518/0x550
[<ffffffff813695b9>] redraw_screen+0x189/0x240
[<ffffffff8136a0e0>] do_bind_con_driver+0x360/0x380
[<ffffffff8136a6e4>] do_take_over_console+0x114/0x1c0
[<ffffffff812fdc83>] do_fbcon_takeover+0x63/0xd0
[<ffffffff813023e5>] fbcon_event_notify+0x605/0x720
[<ffffffff81501dcc>] notifier_call_chain+0x4c/0x70
[<ffffffff81087f8d>] __blocking_notifier_call_chain+0x4d/0x70
[<ffffffff81087fc6>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff812f201b>] fb_notifier_call_chain+0x1b/0x20
In this case ops->cursor_state.mask is allocated in bit_cursor() but
not freed in fbcon_exit(). So, fbcon_exit() needs to free buffer in its
process.
In the case, fbcon_exit() was called from fbcon_deinit() when driver
called remove_conflicting_framebuffers().
Signed-off-by: Masami Ichikawa <masami256@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Break out as soon as we find a mapped entry con2fb_map.
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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STI text console (sticon) was broken on 64bit machines with more than
4GB RAM and this lead in some cases to a kernel crash.
Since sticon uses the 32bit STI API it needs to keep pointers to memory
below 4GB. But on a 64bit kernel some memory regions (e.g. the kernel
stack) might be above 4GB which then may crash the kernel in the STI
functions.
Additionally sticon didn't selected the built-in framebuffer fonts by
default. This is now fixed.
On a side-note: Theoretically we could enhance the sticon driver to
use the 64bit STI API. But - beside the fact that some machines don't
provide a 64bit STI ROM - this would just add complexity.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 3.8+
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fbdev provides framebuffer hotplugging, hence, we need to allow fbcon to
unbind from framebuffers. Unfortunately, fbcon_fb_unbind() cannot unbind
from the last framebuffer, unless console-unbinding is supported.
Fixing fbcon_unbind() to return 0 caused some horrible NULL-derefs in the
VT layer and I couldn't figure out why. Hence, lets just require
console-unbinding so fbdev hotplugging works with fbcon.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Link: http://lkml.kernel.org/r/1375445127-15480-9-git-send-email-dh.herrmann@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Pull drm updates from Dave Airlie:
"Okay this is the big one, I was stalled on the fbdev pull req as I
stupidly let fbdev guys merge a patch I required to fix a warning with
some patches I had, they ended up merging the patch from the wrong
place, but the warning should be fixed. In future I'll just take the
patch myself!
Outside drm:
There are some snd changes for the HDMI audio interactions on haswell,
they've been acked for inclusion via my tree. This relies on the
wound/wait tree from Ingo which is already merged.
Major changes:
AMD finally released the dynamic power management code for all their
GPUs from r600->present day, this is great, off by default for now but
also a huge amount of code, in fact it is most of this pull request.
Since it landed there has been a lot of community testing and Alex has
sent a lot of fixes for any bugs found so far. I suspect radeon might
now be the biggest kernel driver ever :-P p.s. radeon.dpm=1 to enable
dynamic powermanagement for anyone.
New drivers:
Renesas r-car display unit.
Other highlights:
- core: GEM CMA prime support, use new w/w mutexs for TTM
reservations, cursor hotspot, doc updates
- dvo chips: chrontel 7010B support
- i915: Haswell (fbc, ips, vecs, watermarks, audio powerwell),
Valleyview (enabled by default, rc6), lots of pll reworking, 30bpp
support (this time for sure)
- nouveau: async buffer object deletion, context/register init
updates, kernel vp2 engine support, GF117 support, GK110 accel
support (with external nvidia ucode), context cleanups.
- exynos: memory leak fixes, Add S3C64XX SoC series support, device
tree updates, common clock framework support,
- qxl: cursor hotspot support, multi-monitor support, suspend/resume
support
- mgag200: hw cursor support, g200 mode limiting
- shmobile: prime support
- tegra: fixes mostly
I've been banging on this quite a lot due to the size of it, and it
seems to okay on everything I've tested it on."
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (811 commits)
drm/radeon/dpm: implement vblank_too_short callback for si
drm/radeon/dpm: implement vblank_too_short callback for cayman
drm/radeon/dpm: implement vblank_too_short callback for btc
drm/radeon/dpm: implement vblank_too_short callback for evergreen
drm/radeon/dpm: implement vblank_too_short callback for 7xx
drm/radeon/dpm: add checks against vblank time
drm/radeon/dpm: add helper to calculate vblank time
drm/radeon: remove stray line in old pm code
drm/radeon/dpm: fix display_gap programming on rv7xx
drm/nvc0/gr: fix gpc firmware regression
drm/nouveau: fix minor thinko causing bo moves to not be async on kepler
drm/radeon/dpm: implement force performance level for TN
drm/radeon/dpm: implement force performance level for ON/LN
drm/radeon/dpm: implement force performance level for SI
drm/radeon/dpm: implement force performance level for cayman
drm/radeon/dpm: implement force performance levels for 7xx/eg/btc
drm/radeon/dpm: add infrastructure to force performance levels
drm/radeon: fix surface setup on r1xx
drm/radeon: add support for 3d perf states on older asics
drm/radeon: set default clocks for SI when DPM is disabled
...
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