There are at least 3 variables in intel_pstate that do not get updated
after they have been initialized, so annotate them with __ro_after_init.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Drop two redundant checks involving READ_ONCE() from notify_hwp_interrupt()
and make it check hwp_active without READ_ONCE() which is not necessary,
because that variable is only set once during the early initialization of
the driver.
In order to make that clear, annotate hwp_active with __ro_after_init.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Make intel_pstate_disable_hwp_interrupt() wait for canceled delayed work
to complete to avoid leftover work items running when it returns which
may be during driver unregistration and may confuse things going forward.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Because intel_pstate_enable/disable_hwp_interrupt() are only called from
thread context, they need not save the IRQ flags when using a spinlock
as interrupts are guaranteed to be enabled when they run, so make them
use spin_lock/unlock_irq().
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Remove the spinlock locking from intel_pstate_driver_cleanup() as it is
not necessary because no other code accessing all_cpu_data[] can run in
parallel with that function.
Had the locking been necessary, though, it would have been incorrect
because the lock in question is acquired from a hardirq handler and
it cannot be acquired from thread context without disabling interrupts.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge the mmc fixes for v6.9-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.10.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Modules registering driver with sdio_register_driver() might
forget to set .owner field. The field is used by some of other kernel
parts for reference counting (try_module_get()), so it is expected that
drivers will set it.
Solve the problem by moving this task away from the drivers to the core
code, just like we did for platform_driver in
commit 9447057eaf ("platform_device: use a macro instead of
platform_driver_register").
Since many drivers forget to set the .owner, this effectively will fix
them. Examples of fixed drivers are: ath6kl, b43, btsdio.c, ks7010,
libertas, MediaTek WiFi drivers, Realtek WiFi drivers, rsi, siano,
wilc1000, wl1251 and more.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240329-module-owner-sdio-v1-1-e4010b11ccaa@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
d7133797e9 ("mmc: sdhci-pci-gli: A workaround to allow GL9750 to enter
ASPM L1.2") and 36ed2fd32b ("mmc: sdhci-pci-gli: A workaround to allow
GL9755 to enter ASPM L1.2") added writes to the Control register in the
Power Management Capability to put the device in D3hot and back to D0.
Use the pci_set_power_state() interface instead because these are generic
operations that don't need to be driver-specific. Also, the PCI spec
requires some delays after these power transitions, and
pci_set_power_state() takes care of those, while d7133797e9 and
36ed2fd32b did not.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Link: https://lore.kernel.org/r/20240327214831.1544595-3-helgaas@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
015c9cbcf0 ("mmc: sdhci-pci-gli: GL9750: Mask the replay timer timeout of
AER") added PCI_GLI_9750_CORRERR_MASK, the offset of the AER Capability in
config space, and PCI_GLI_9750_CORRERR_MASK_REPLAY_TIMER_TIMEOUT, the
Replay Timer Timeout bit in the AER Correctable Error Status register.
Use pci_find_ext_capability() to locate the AER Capability and use the
existing PCI_ERR_COR_REP_TIMER definition to mask the bit.
This removes a little bit of unnecessarily device-specific code and makes
AER-related things more greppable.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20240327214831.1544595-2-helgaas@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Convert the existing symbolic permissions to the octal presentation as
this is the preferred representation for debugfs permissions.
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Link: https://lore.kernel.org/r/20240326094215.212930-1-r.czerwinski@pengutronix.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Generic sdhci code registers LED device and uses host->runtime_suspended
flag to protect access to it. The sdhci-msm driver doesn't set this flag,
which causes a crash when LED is accessed while controller is runtime
suspended. Fix this by setting the flag correctly.
Cc: stable@vger.kernel.org
Fixes: 67e6db113c ("mmc: sdhci-msm: Add pm_runtime and system PM support")
Signed-off-by: Mantas Pucka <mantas@8devices.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240321-sdhci-mmc-suspend-v1-1-fbc555a64400@8devices.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add a compatible string for the SDHC binding of NXP S32G3 platforms. Here
we use "nxp,s32g2-usdhc" as fallback since the s32g2-usdhc
driver works also on S32G3 platforms.
Signed-off-by: Wadim Mueller <wafgo01@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240324214329.29988-4-wafgo01@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Using __exit for the remove function results in the remove callback being
discarded with CONFIG_MMC_DAVINCI=y. When such a device gets unbound (e.g.
using sysfs or hotplug), the driver is just removed without the cleanup
being performed. This results in resource leaks. Fix it by compiling in the
remove callback unconditionally.
This also fixes a W=1 modpost warning:
WARNING: modpost: drivers/mmc/host/davinci_mmc: section mismatch in
reference: davinci_mmcsd_driver+0x10 (section: .data) ->
davinci_mmcsd_remove (section: .exit.text)
Fixes: b4cff4549b ("DaVinci: MMC: MMC/SD controller driver for DaVinci family")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240324114017.231936-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
For enabling CQE support just set 'supports-cqe' in your DevTree file
for appropriate mmc node.
Signed-off-by: Sergey Khimich <serghox@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240319115932.4108904-3-serghox@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
There are could be specific limitations for some mmc
controllers for setting cqhci transfer descriptors.
So add callback to allow implement driver specific function.
Signed-off-by: Sergey Khimich <serghox@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240319115932.4108904-2-serghox@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The sdhci_am654_set_clock function is also used to enable
delay chain, therefore fix comments to be more generic in
case we are not enabling DLL.
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-6-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
While integer type works, the otap_del_sel and itap_del_sel
arrays are manipulated as u32, so change array types to u32.
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-5-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
While STRB is currently used for DATA and CRC responses, the CMD
responses from the device to the host still require ITAPDLY for
HS400 timing.
Currently what is stored for HS400 is the ITAPDLY from High Speed
mode which is incorrect. The ITAPDLY for HS400 speed mode should
be the same as ITAPDLY as HS200 timing after tuning is executed.
Add the functionality to save ITAPDLY from HS200 tuning and save
as HS400 ITAPDLY.
Fixes: a161c45f29 ("mmc: sdhci_am654: Enable DLL only for some speed modes")
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-8-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add ITAPDLYSEL to sdhci_j721e_4bit_set_clock function.
This allows to set the correct ITAPDLY for timings that
do not carry out tuning.
Fixes: 1accbced1c ("mmc: sdhci_am654: Add Support for 4 bit IP on J721E")
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-7-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently the OTAP/ITAP delay enable functionality is incorrect in
the am654_set_clock function. The OTAP delay is not enabled when
timing < SDR25 bus speed mode. The ITAP delay is not enabled for
timings that do not carry out tuning.
Add this OTAP/ITAP delay functionality according to the datasheet
[1] OTAPDLYENA and ITAPDLYENA for MMC0.
[1] https://www.ti.com/lit/ds/symlink/am62p.pdf
Fixes: 8ee5fc0e0b ("mmc: sdhci_am654: Update OTAPDLY writes")
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-4-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
For DDR52 timing, DLL is enabled but tuning is not carried
out, therefore the ITAPDLY value in PHY CTRL 4 register is
not correct. Fix this by writing ITAPDLY after enabling DLL.
Fixes: a161c45f29 ("mmc: sdhci_am654: Enable DLL only for some speed modes")
Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Andrew Davis <afd@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-3-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Currently the sdhci_am654 driver only supports one tuning
algorithm which should be used only when DLL is enabled. The
ITAPDLY is selected from the largest passing window and the
buffer is viewed as a circular buffer.
The new algorithm should be used when the delay chain
is enabled. The ITAPDLY is selected from the largest passing
window and the buffer is not viewed as a circular buffer.
This implementation is based off of the following paper: [1].
Also add support for multiple failing windows.
[1] https://www.ti.com/lit/an/spract9/spract9.pdf
Fixes: 13ebeae68a ("mmc: sdhci_am654: Add support for software tuning")
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240320223837.959900-2-jm@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.
coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().
sprintf() will be converted as weel if they have.
Generally, this patch is generated by
make coccicheck M=<path/to/file> MODE=patch \
COCCI=scripts/coccinelle/api/device_attr_show.cocci
No functional change intended
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Link: https://lore.kernel.org/r/20240314091512.1323650-1-lizhijian@fujitsu.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The err is being set to 0 and replaced every time after this
assignment. Remove this assignment as it is extraneous.
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240307145013.2721326-1-usama.anjum@collabora.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The err is being set to 0 and replaced every time after this
assignment. Remove this assignment as it is extraneous.
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240307122129.2359553-1-usama.anjum@collabora.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
of_gpio.h is deprecated and subject to remove.
The driver doesn't use it, simply remove the unused header.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240307114500.3643489-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
It seems the of_get_named_gpio() is solely used to check
if the GPIO is present in DT as the function can return 0
if and only if it's present and it becomes in the global
number space 0. But this quite likely shows that the code
wasn't ever been tested on the systems when no GPIO is provided.
In any case, the proper test is just to call of_property_present()
without any attempts in requesting GPIO (as we haven't saved the
number or descriptor anywhere in the code).
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240307121912.3676850-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
of_gpio.h is deprecated and subject to remove.
The driver doesn't use it, simply remove the unused header.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Axe Yang <axe.yang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240307114348.3643034-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Enable ALPM AUX-Less on source side for Panel Replay eDP. Also write all
calculated AUX-Less configuration values accordingly. Enabling it on sink
side is in upcoming patch.
Bspec: 71477
v5:
- mention enable is only on source side in commit message
v4:
- add comment explaining why AUX less is enabled on eDP panel replay
without any extra checks
v3:
- do not use alpm_ctl as uninitialized variable
v2:
- do not set AUX-Wake related bits for AUX-Less case
- drop switch to active latency
- add SLEEP_HOLD_TIME_50_SYMBOLS
- add PORT_ALPM_CTL_MAX_PHY_SWING_HOLD
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328141928.1311284-5-jouni.hogander@intel.com
Add get function for silence period and lfps half cycle. Values are taken
from the tables in bspec.
Bspec: 71632
v3:
- use PORT_ALPM_CTL_SILENCE_PERIOD_MASK instead of value 255
- use PORT_ALPM_LFPS_CTL_LAST_LFPS_HALF_CYCLE_DURATION_MASK instead of
value 31
v2:
- fix some checks
- add some more comments
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328141928.1311284-4-jouni.hogander@intel.com
Calculate aux less wake time and store it into alpm_params struct
Bspec: 71477
v4:
- re-use fast_wake_lines to store aux_less_wake_lines
v3:
- use ALPM_CTL_AUX_LESS_WAKE_TIME_MASK instead of value 63
v2:
- use variables instead of values directly
- fix max value
- move converting port clock to Mhz into _lnl_compute_aux_less_wake_time
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328141928.1311284-3-jouni.hogander@intel.com
Couple of ALPM AUX-Less related fields are missing from ALPM register
definitions. Add these and remove some duplicate definitions.
Bspec: 70294
V2: add Bspec reference
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328141928.1311284-2-jouni.hogander@intel.com
Add device nodes for the remaining High Speed Serial Communication
Interfaces with FIFO (HSCIF) on the Renesas R-Car V4M (R8A779H0) SoC,
including DMA support and the optional external clock source used by
HSCIF2.
Based on a patch in the BSP by Nghia Nguyen.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/b39f081db01fde2d1bf83a193f25b295cfeb002d.1709741303.git.geert+renesas@glider.be
Instead of using fallback driver name match, provide ID table[1] for the
primary match. Also allow automatic module loading by adding
MODULE_DEVICE_TABLE().
[1]: https://elixir.bootlin.com/linux/v6.8/source/drivers/base/platform.c#L1353
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
When gpio-ranges property was missed to be added in the gpio node,
using dev_err() to show an error message will helping to locate issues
easier.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Automatically clean up the conncetor-poll thread as part of the DRM
device release. The new helper drmm_kms_helper_poll_init() provides
a shared implementation for all drivers.
v6:
- fix kernel doc comment (Sui, kernel test robot)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-14-tzimmermann@suse.de
Implement polling for VGA and SIL164 connectors. Set the flag
DRM_CONNECTOR_POLL_DISCONNECT for each to detect the removal of the
monitor cable. Implement struct drm_connector_helper_funcs.detect_ctx
for each type of connector by testing for EDID data.
The helper drm_connector_helper_detect_ctx() implements .detect_ctx()
on top of the connector's DDC channel. The function can be used by
other drivers as companion to drm_connector_helper_get_modes().
v6:
- change helper name to drm_connector_helper_detec_from_ddc()
(Maxime, Sui)
v5:
- share implementation in drm_connector_helper_detect_ctx() (Maxime)
- test for DDC presence with drm_probe_ddc() (Maxime, Jani)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-13-tzimmermann@suse.de
The .get_modes() code for VGA and SIL164 connectors does not depend
on either type of connector. Replace the driver code with the common
helper drm_connector_helper_get_modes(). It reads EDID data via
DDC and updates the connector's EDID property.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-12-tzimmermann@suse.de
The modeset lock protects the DDC code from concurrent modeset
operations, which use the same registers. Move that code from the
connector helpers into the DDC helpers .pre_xfer() and .post_xfer().
Both, .pre_xfer() and .post_xfer(), enclose the transfer of data blocks
over the I2C channel in the internal I2C function bit_xfer(). Both
calls are executed unconditionally if present. Invoking DDC transfers
from any where within the driver now takes the lock.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Tested-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325200855.21150-11-tzimmermann@suse.de
