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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v3.13
Some additional fixes for v3.13, the majority of which are removals and
downgrades of BUG()s from Takashi.
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here is a set of patches that revert all of the changes done to the
pl2303 USB serial driver in the 3.12-rc timeframe, as it turns out
they break some devices that work just fine on 3.11. As it's not a
good idea to break working systems, drop them all and they will be
reworked for future kernel versions such that there is no breakage.
I've also included a MAINTAINERS update for the USB serial subsystem
and a new device id for the ftdi_sio driver as well"
* tag 'usb-3.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: ftdi_sio: add id for Z3X Box device
USB: Maintainers change for usb serial drivers
Revert "USB: pl2303: restrict the divisor based baud rate encoding method to the "HX" chip type"
Revert "usb: pl2303: fix+improve the divsor based baud rate encoding method"
Revert "usb: pl2303: do not round to the next nearest standard baud rate for the divisor based baud rate encoding method"
Revert "usb: pl2303: remove 500000 baud from the list of standard baud rates"
Revert "usb: pl2303: move the two baud rate encoding methods to separate functions"
Revert "usb: pl2303: increase the allowed baud rate range for the divisor based encoding method"
Revert "usb: pl2303: also use the divisor based baud rate encoding method for baud rates < 115200 with HX chips"
Revert "usb: pl2303: add two comments concerning the supported baud rates with HX chips"
Revert "pl2303: simplify the else-if contruct for type_1 chips in pl2303_startup()"
Revert "pl2303: improve the chip type information output on startup"
Revert "pl2303: improve the chip type detection/distinction"
Revert "USB: pl2303: distinguish between original and cloned HX chips"
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Custom VID/PID for Z3X Box device, popular tool for cellphone flashing.
Signed-off-by: Alexey E. Kramarenko <alexeyk13@yandex.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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the "HX" chip type"
This reverts commit b8bdad608213caffa081a97d2e937e5fe08c4046.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 57ce61aad748ceaa08c859da04043ad7dae7c15e.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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the divisor based baud rate encoding method"
This reverts commit 75417d9f99f89ab241de69d7db15af5842b488c4.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit b9208c721ce736125fe58d398319513a27850fd8.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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functions"
This reverts commit e917ba01d69ad705a4cd6a6c77538f55d84f5907.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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based encoding method"
This reverts commit b5c16c6a031c52cc4b7dda6c3de46462fbc92eab.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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for baud rates < 115200 with HX chips"
This reverts commit 61fa8d694b8547894b57ea0d99d0120a58f6ebf8.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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with HX chips"
This reverts commit c23bda365dfbf56aa4d6d4a97f83136c36050e01.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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pl2303_startup()"
This reverts commit 73b583af597542329e6adae44524da6f27afed62.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit a77a8c23e4db9fb1f776147eda0d85117359c700.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 034d1527adebd302115c87ef343497a889638275.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 7d26a78f62ff4fb08bc5ba740a8af4aa7ac67da4.
Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
they cause regressions on some versions of the chip. This will all be
revisited for later kernel versions when we can figure out how to handle
this in a way that does not break working devices.
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull clock subsystem fixes from Mike Turquette.
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux:
clk: fixup argument order when setting VCO parameters
clk: socfpga: Fix incorrect sdmmc clock name
clk: armada-370: fix tclk frequencies
clk: nomadik: set all timers to use 2.4 MHz TIMCLK
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The order of arguments in the call to vco_set() for the ICST clocks appears to
have been switched in error, which results in the VCO not being initialised
correctly. This in turn stops the integrated LCD on things like Integrator/CP
from working correctly.
This patch fixes the order and restores the expected functionality.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: stable@vger.kernel.org
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The SD/MMC clock is named "sdmmc_clk", and NOT "mmc_clk". Because of this,
the SD driver was getting the incorrect clock value. This prevented the
SD driver from initializing correctly.
Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Olof Johansson <olof@lixom.net>
Reviewed-by: Pavel Machek <pavel@denx.de>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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This patch fixes the tclk frequency array for the Armada-370 SoC.
This bug has been introduced by commit 6b72333d
("clk: mvebu: add Armada 370 SoC-centric clock init").
A wrong tclk frequency affects the following drivers: mvsdio, mvneta,
i2c-mv64xxx and mvebu-devbus. This list may be incomplete.
About the mvneta Ethernet driver, note that the tclk frequency is used
to compute the Rx time coalescence. Then, this bug harms the coalescence
configuration and also degrades the networking performances with the
default values.
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Turquette <mturquette@deferred.io>
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This fixes a regression for the Nomadik on the main system
timers.
The Nomadik seemed a bit slow and its heartbeat wasn't looking
healthy. And it was not strange, because it has been connected
to the 32768 Hz clock at boot, while being told by the clock driver
that it was 2.4MHz. Actually connect the TIMCLK to 2.4MHz by
default as this is what we want for nice scheduling, clocksource
and clock event.
Cc: stable@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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The last i915 drm update brought with it this annoying warning
drivers/gpu/drm/i915/intel_crt.c: In function ‘intel_crt_get_config’:
drivers/gpu/drm/i915/intel_crt.c:110:21: warning: unused variable ‘dev’ [-Wunused-variable]
struct drm_device *dev = encoder->base.dev;
^
introduced by commit 7195a50b5c7e ("drm/i915: Add HSW CRT output readout
support").
Remove the offending pointless variable.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"A bit later than I would want, but the changes are very minor - a few
new device IDs for new hardware in existing drivers, fix for battery
in Wacom devices not be considered system battery and cause emergency
hibernations, and a couple of other bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: ALPS - add support for model found on Dell XT2
Input: wacom - add support for ISDv4 0x10E sensor
Input: wacom - add support for ISDv4 0x10F sensor
Input: wacom - export battery scope
Input: cm109 - convert high volume dev_err() to dev_err_ratelimited()
Input: move name/timer init to input_alloc_dev()
Input: i8042 - i8042_flush fix for a full 8042 buffer
Input: pxa27x_keypad - fix NULL pointer dereference
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This patch adds support for touchpad found on Dell XT2. It's a dual device
with device ID: 73, 00, 14, that comply with "ALPS_PROTO_V2".
Signed-off-by: Yunkang Tang <yunkang.tang@cn.alps.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Used in the Fujitsu T732
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Filip Zarnecki <Filip.Zarnecki@fuw.edu.pl>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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This will stop UPower from detecting the tablet as a power supply,
and using its battery status to hibernate or switch off the machine.
https://bugs.freedesktop.org/show_bug.cgi?id=70321
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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BugLink: http://bugs.launchpad.net/bugs/1222850
This input device can get into a state that produces a high
volume of device status errors. Attempt to throttle these
error messages such that the kernel log is not flooded.
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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We want to allow drivers to call input_event() at any time after the
device got allocated. This means input_event() and input_register_device()
must be allowed to run in parallel.
The only conflicting calls in input_register_device() are init_timer() and
dev_set_name(). Both can safely be moved to device allocation and we're
good to go.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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When 8042 internal data buffer is full, the driver
erroneously decides that the controller is not present.
i8042_flush returns the number of flushed bytes, which is
in 0 - I8042_BUFFER_SIZE range inclusive. Therefore, i8042_flush
has no way to indicate an error. Moreover i8042_controller_check
takes initially full buffer (i8042_flush returned
I8042_BUFFER_SIZE) as a sign of absence of the controller.
Let's change i8042 to return success/error instead and make sure
we do not return error prematurely.
Signed-off-by: Andrey Moiseev <o2g.org.ru@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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A NULL pointer dereference exception occurs in the driver probe function when
device tree is used. The pdata pointer will be NULL in this case, but the code
dereferences it in all cases. When device tree is used, a platform data
structure is allocated and initialized, and in all cases this pointer is copied
to the driver's private data, so the variable being tested should be accessed
through the driver's private data structure.
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael J Wysocki:
"Last-minute ACPI and power management fixes for 3.12
- Revert epoll and select commits related to the freezer, introduced
during the 3.11 cycle, that cause mysterious user space breakage to
occur during resume from suspend to RAM for multiple users of
32-bit x86 systems. Material for 3.11.y stable kernels.
- Revert a recent ACPI-based PCI hotplug (ACPIPHP) commit that was
part of boot problem fixes for one machine, but turns out to cause
issues with hotplug on Thunderbolt chains with multiple devices.
It also turns out to be unnecessary after another fix in the same
area that went in later. From Mika Westerberg"
* tag 'pm+acpi-3.12-late' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPI / hotplug / PCI: Avoid doing too much for spurious notifies"
Revert "select: use freezable blocking call"
Revert "epoll: use freezable blocking call"
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Commit 2dc4128 (ACPI / hotplug / PCI: Avoid doing too much for
spurious notifies) changed the enable_slot() to check return value of
pci_scan_slot() and if it is zero return early from the function. It
means that there were no new devices in this particular slot.
However, if a device appeared deeper in the hierarchy the code now
ignores it causing things like Thunderbolt chaining fail to recognize
new devices.
The problem with Alex Williamson's machine was solved with commit
a47d8c8 (ACPI / hotplug / PCI: Avoid parent bus rescans on spurious
device checks) and hence we should be able to restore the original
functionality that we always rescan on bus check notification.
On a device check notification we still check what acpiphp_rescan_slot()
returns and on zero bail out early.
Fixes: 2dc41281b1d1 (ACPI / hotplug / PCI: Avoid doing too much for spurious notifies)
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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into drm-fixes
Just a few small fixes for radeon (audio regression fix,
stability fix, and an endian bug noticed by coverity).
* 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon/dpm: fix incompatible casting on big endian
drm/radeon: disable bapm on KB
drm/radeon: use sw CTS/N values for audio on DCE4+
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We use u16 for voltage values throughout the driver so switch
the table values to a u16 as well. Fixes an incompatible
cast error in ci_patch_clock_voltage_limits_with_vddc_leakage()
picked up by coverity.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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May cause stability problems on some boards.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Use the driver calculated CTS and N values rather than
having hardware generate them. This allows us to use
the modeline pixel clock rather than the actual pll clock
when setting up the dto for audio. Fixes problems with
audio playback rate on certain asics if the pll clock
does not match the pixel clock exactly.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial fixes from Greg KH:
"Here are 3 tiny fixes that are needed for 3.12-final for some serial
drivers.
One of them is a revert of a broken patch, and two others are fixes
for reported bugs. All of these have been in linux-next for a while,
I forgot I had not sent them to you yet, my fault"
(Actually, Greg, you _had_ sent two of the three, so this pulls in just
one actual new fix)
* tag 'tty-3.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty/serial: at91: fix uart/usart selection for older products
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Since commit 055560b04a8cd063aea916fd083b7aec02c2adb8 (serial: at91:
distinguish usart and uart) the older products which do not have a
name field in their register map are unable to use their serial output.
As the main console output is usually the serial interface (aka DBGU) it
is pretty unfortunate.
So, instead of failing during probe() we just silently configure the serial
peripheral as an uart. It allows us to use these serial outputs.
The proper solution is proposed in another patch.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull drm fixes from Dave Airlie:
"Mainly Intel regression fixes and quirks, along with a simple one
liner to fix rendernodes ioctl access (off by default, but testers
want to test it)"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: allow DRM_IOCTL_VERSION on render-nodes
drm/i915: Fix the PPT fdi lane bifurcate state handling on ivb
drm/i915: No LVDS hardware on Intel D410PT and D425KT
drm/i915/dp: workaround BIOS eDP bpp clamping issue
drm/i915: Add HSW CRT output readout support
drm/i915: Add support for pipe_bpp readout
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DRM_IOCTL_VERSION is a reliable way to get the driver-name and version
information. It's not related to the interface-version (SET_VERSION ioctl)
so we can safely enable it on render-nodes.
Note that gbm uses udev-BUSID to load the correct mesa driver. However,
the VERSION ioctl should be the more reliable way to do this (in case we
add new DRM-bus drivers which have no BUSID or similar).
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Regression and warn fixes for i915.
* tag 'drm-intel-fixes-2013-10-29' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Fix the PPT fdi lane bifurcate state handling on ivb
drm/i915: No LVDS hardware on Intel D410PT and D425KT
drm/i915/dp: workaround BIOS eDP bpp clamping issue
drm/i915: Add HSW CRT output readout support
drm/i915: Add support for pipe_bpp readout
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Originally I've thought that this is leftover hw state dirt from the
BIOS. But after way too much helpless flailing around on my part I've
noticed that the actual bug is when we change the state of an already
active pipe.
For example when we change the fdi lines from 2 to 3 without switching
off outputs in-between we'll never see the crucial on->off transition
in the ->modeset_global_resources hook the current logic relies on.
Patch version 2 got this right by instead also checking whether the
pipe is indeed active. But that in turn broke things when pipes have
been turned off through dpms since the bifurcate enabling is done in
the ->crtc_mode_set callback.
To address this issues discussed with Ville in the patch review move
the setting of the bifurcate bit into the ->crtc_enable hook. That way
we won't wreak havoc with this state when userspace puts all other
outputs into dpms off state. This also moves us forward with our
overall goal to unify the modeset and dpms on paths (which we need to
have to allow runtime pm in the dpms off state).
Unfortunately this requires us to move the bifurcate helpers around a
bit.
Also update the commit message, I've misanalyzed the bug rather badly.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70507
Tested-by: Jan-Michael Brummer <jan.brummer@tabos.org>
Cc: stable@vger.kernel.org
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The Intel D410PT(LW) and D425KT Mini-ITX desktop boards both show up as
having LVDS but the hardware is not populated. This patch adds them to
the list of such systems. Patch is against 3.11.4
v2: Patch revised to match the D425KT exactly as the D425KTW does have
LVDS. According to Intel's documentation, the D410PTL and D410PLTW
don't.
Signed-off-by: Rob Pearce <rob@flitspace.org.uk>
Cc: stable@vger.kernel.org
[danvet: Pimp commit message to my liking and add cc: stable.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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This isn't a real fix to the problem, but rather a stopgap measure while
trying to find a proper solution.
There are several laptops out there that fail to light up the eDP panel
in UEFI boot mode. They seem to be mostly IVB machines, including but
apparently not limited to Dell XPS 13, Asus TX300, Asus UX31A, Asus
UX32VD, Acer Aspire S7. They seem to work in CSM or legacy boot.
The difference between UEFI and CSM is that the BIOS provides a
different VBT to the kernel. The UEFI VBT typically specifies 18 bpp and
1.62 GHz link for eDP, while CSM VBT has 24 bpp and 2.7 GHz link. We end
up clamping to 18 bpp in UEFI mode, which we can fit in the 1.62 Ghz
link, and for reasons yet unknown fail to light up the panel.
Dithering from 24 to 18 bpp itself seems to work; if we use 18 bpp with
2.7 GHz link, the eDP panel lights up. So essentially this is a link
speed issue, and *not* a bpp clamping issue.
The bug raised its head since
commit 657445fe8660100ad174600ebfa61536392b7624
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sat May 4 10:09:18 2013 +0200
Revert "drm/i915: revert eDP bpp clamping code changes"
which started clamping bpp *before* computing the link requirements, and
thus affecting the required bandwidth. Clamping after the computations
kept the link at 2.7 GHz.
Even though the BIOS tells us to use 18 bpp through the VBT, it happily
boots up at 24 bpp and 2.7 GHz itself! Use this information to
selectively ignore the VBT provided value.
We can't ignore the VBT eDP bpp altogether, as there are other laptops
that do require the clamping to be used due to EDID reporting higher bpp
than the panel can support.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=59841
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67950
Tested-by: Ulf Winkelvos <ulf@winkelvos.de>
Tested-by: jkp <jkp@iki.fi>
CC: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Call intel_ddi_get_config() to get the pipe_bpp settings from
DDI.
The sync polarity settings from DDI are irrelevant for CRT
output, so override them with data from the ADPA register.
Note: This is already merged in drm-intel-next-queued as
commit 6801c18c0a43386bb44712cbc028a7e05adb9f0d
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue Sep 24 14:24:05 2013 +0300
drm/i915: Add HSW CRT output readout support
but is required for the following edp bpp bugfix.
v2: Extract intel_crt_get_flags()
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=69691
Tested-by: Qingshuai Tian <qingshuai.tian@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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On CTG+ read out the pipe bpp setting from hardware and fill it into
pipe config. Also check it appropriately.
v2: Don't do the pipe_bpp extraction inside the PCH only code block on
ILK+.
Avoid the PIPECONF read as we already have read it for the
PIPECONF_EANBLE check.
Note: This is already in drm-intel-next-queued as
commit 42571aefafb1d330ef84eb29418832f72e7dfb4c
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Fri Sep 6 23:29:00 2013 +0300
drm/i915: Add support for pipe_bpp readout
but is needed for the following bugfix.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The icount.reserved[] array isn't initialized so it leaks stack
information to userspace.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The DevInfo.u32Reserved[] array isn't initialized so it leaks kernel
information to user space.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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