* Re: [PATCH v1 0/8] zorro: Improve handling of pointers in zorro_device_id::driver_data
From: Helge Deller @ 2026-06-04 22:44 UTC (permalink / raw)
To: Uwe Kleine-König (The Capable Hub)
Cc: linux-ide, linux-m68k, linux-kernel, linux-scsi, netdev,
linux-i2c, linux-fbdev, dri-devel, Christian A. Ehrhardt,
Christian A. Ehrhardt
In-Reply-To: <cover.1779803053.git.u.kleine-koenig@baylibre.com>
Hi Uwe,
On 5/26/26 16:17, Uwe Kleine-König (The Capable Hub) wrote:
> Hello,
>
> this series is about improving the handling of pointers in struct
> zorro_device_id's driver_data.
>
> While it's ok on all current Linux platforms to store a pointer in an
> unsigned long variable, it involves casting that loses type information.
> This can be nicely seen in patch #7 where after profiting from patch #6
> the compiler notices a missing const.
>
> Preparing for that change, all zorro_device_ids are converted to use
> named initializers, which is also a nice cleanup that could stand for
> itself, as it improves readability for humans. (That is necessary
> because an anonymous union can be initialized by name, but not using a
> list initializer.)
>
> My motivation for this series is the CHERI hardware extension. With that
> pointers are bigger than longs and thus you cannot store pointers in
> zorro_device_id::driver_data. So this series is also about getting
> support for CHERI into the mainline, but I hope the clean up effects
> mentioned above are justification enough to accept this series.
>
> The dependencies in this series are as follows:
>
> - Patch #5 depends on #1, #2
> - Patches #7 and #8 depend on patch #6.
>
> So if the ata maintainers agreed to merge their patch #1 via scsi, and
> Geert agrees to patch #5 and that it's also merged via scsi, patches #1,
> #2, #6 and #7 can go in without further coordination.
>
> Patches #3, #4 and #5 are only about using the same initialization style
> for all zorro_device_id and can go in without coordination.
>
> Best regards
> Uwe
>
> Uwe Kleine-König (The Capable Hub) (8):
> ata: pata_budda: Use named initializer for zorro_device_id
> scsi: Use named initializer for zorro_device_id
> net: Use named initializer for zorro_device_id arrays
> i2c: icy: Use named initializer for zorro_device_id arrays
> video: fm2fb: Use named initializer for zorro_device_id array
> zorro: Simplify storing pointers in device id struct
> scsi: zorro7xx: Make use of struct zorro_device_id::driver_data_ptr
> video: cirrusfb: Make use of struct zorro_device_id::driver_data_ptr
>
> drivers/ata/pata_buddha.c | 8 ++++----
> drivers/i2c/busses/i2c-icy.c | 4 ++--
> drivers/net/ethernet/8390/hydra.c | 4 ++--
> drivers/net/ethernet/8390/xsurf100.c | 4 ++--
> drivers/net/ethernet/8390/zorro8390.c | 6 +++---
> drivers/net/ethernet/amd/a2065.c | 8 ++++----
> drivers/net/ethernet/amd/ariadne.c | 4 ++--
> drivers/scsi/a2091.c | 6 +++---
> drivers/scsi/gvp11.c | 17 ++++++++--------
> drivers/scsi/zorro7xx.c | 16 +++++++--------
> drivers/scsi/zorro_esp.c | 2 +-
> drivers/video/fbdev/cirrusfb.c | 28 +++++++++++++--------------
> drivers/video/fbdev/fm2fb.c | 6 +++---
> include/linux/mod_devicetable.h | 6 +++++-
> 14 files changed, 62 insertions(+), 57 deletions(-)
you may add to the series:
Acked-by: Helge Deller <deller@gmx.de>
Since it touches various subtrees, I assume you will merge it though your tree?
Helge
^ permalink raw reply
* Re: [PATCH] fbdev: pxa168fb: use devm_ioremap_resource() for MMIO
From: Helge Deller @ 2026-06-04 22:46 UTC (permalink / raw)
To: Alberto Aróstegui; +Cc: linux-fbdev, dri-devel
In-Reply-To: <20260527153913.33342-1-aarosteguig@gmail.com>
On 5/27/26 17:39, Alberto Aróstegui wrote:
> From: AlbertoArostegui <aarosteguig@gmail.com>
>
> pxa168fb maps the LCD controller register resource with devm_ioremap(),
> which does not request the memory region. Use devm_ioremap_resource()
> instead so the MMIO range is claimed before being mapped.
>
> This also handles cleanup automatically.
>
> Signed-off-by: AlbertoArostegui <aarosteguig@gmail.com>
> ---
> drivers/video/fbdev/pxa168fb.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
applied.
Thanks!
Helge
^ permalink raw reply
* Re:[PATCH 7.0] fbdev: fbcon: fix memory leak in error path of fbcon_do_set_font()
From: w15303746062 @ 2026-06-05 3:33 UTC (permalink / raw)
To: simona, deller
Cc: tzimmermann, ville.syrjala, sam, kees, yanquanmin1, syoshida,
linux-fbdev, dri-devel, linux-kernel, Mingyu Wang, stable
In-Reply-To: <20260525082741.600003-1-w15303746062@163.com>
Hi Helge, Simona, and all,
A gentle ping on this patch.
Since this issue was inherently resolved in the mainline tree via a recent refactor, this specific fix is intended only for the 7.0 and older stable branches where the legacy userfont logic is still present and vulnerable to this memory leak.
Could the fbdev maintainers please take a look and provide an Acked-by? This will allow the stable team to safely pick it up for the older trees.
(+Cc stable@vger.kernel.org)
Best regards,
Mingyu
At 2026-05-25 16:27:41, w15303746062@163.com wrote:
>From: Mingyu Wang <25181214217@stu.xidian.edu.cn>
>
>[ Note: This issue was discovered on the 7.0 kernel. While the current
> mainline has already been refactored to use `font_data_t` (which
> inadvertently resolved this bug), this vulnerability still actively
> affects the 7.0 branch and older stable trees that rely on the legacy
> userfont logic. This patch provides a targeted fix for these stable
> branches. ]
>
>When fbcon_do_set_font() fails (e.g., due to a vc_resize() failure under
>fault injection), it jumps to the `err_out` label to roll back the
>console state.
>
>However, the restoration of the previous font state (`p->userfont =
>old_userfont`) is erroneously placed inside the `if (userfont)` block.
>If the failed operation was attempting to set the default builtin font
>(`userfont == 0`), the restoration is completely skipped.
>
>This causes a state machine corruption where `p->userfont` remains `0`
>while `p->fontdata` still points to the previously allocated user font
>memory. Later, when the console is destroyed (e.g., via VT_DISALLOCATE),
>fbcon_free_font() fails to free this memory because its `if (p->userfont)`
>check fails, resulting in a memory leak caught by kmemleak:
>
> unreferenced object 0xffff888127ea0000 (size 33296):
> comm "syz.0.8726", pid 33224, jiffies 4297754643
> hex dump (first 32 bytes):
> a6 e4 f9 dd 00 00 00 00 00 82 00 00 01 00 00 00 ................
> d2 09 6c bf 52 8a 7d d4 ef 1d 59 16 51 86 32 bf ..l.R.}...Y.Q.2.
> backtrace (crc 4a0a57dd):
> ___kmalloc_large_node+0xe7/0x180 mm/slub.c:5214
> __kmalloc_large_node_noprof+0x29/0x130 mm/slub.c:5232
> __do_kmalloc_node mm/slub.c:5248 [inline]
> __kmalloc_noprof+0x5fc/0x7c0 mm/slub.c:5272
> kmalloc_noprof include/linux/slab.h:954 [inline]
> fbcon_set_font+0x431/0xa60 drivers/video/fbdev/core/fbcon.c:2525
> con_font_set drivers/tty/vt/vt.c:4918 [inline]
> con_font_op+0x94d/0xe80 drivers/tty/vt/vt.c:4958
> vt_k_ioctl drivers/tty/vt/vt_ioctl.c:472 [inline]
> vt_ioctl+0x63c/0x2ee0 drivers/tty/vt/vt_ioctl.c:743
>
>Fix this by moving the `p->userfont = old_userfont` assignment outside
>the `if (userfont)` block so that the terminal state is unconditionally
>and correctly restored regardless of which font setting triggered the
>error.
>
>Fixes: a5a923038d70 ("fbdev: fbcon: Properly revert changes when vc_resize() failed")
>Signed-off-by: Mingyu Wang <25181214217@stu.xidian.edu.cn>
>---
> drivers/video/fbdev/core/fbcon.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
>index 666261ae59d8..a38545dc8416 100644
>--- a/drivers/video/fbdev/core/fbcon.c
>+++ b/drivers/video/fbdev/core/fbcon.c
>@@ -2461,8 +2461,10 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h, int charcount,
> p->fontdata = old_data;
> vc->vc_font.data = old_data;
>
>+ /* Unconditionally restore the previous userfont state */
>+ p->userfont = old_userfont;
>+
> if (userfont) {
>- p->userfont = old_userfont;
> if (--REFCOUNT(data) == 0)
> kfree(data - FONT_EXTRA_WORDS * sizeof(int));
> }
>--
>2.34.1
^ permalink raw reply
* Re: [PATCH v1 0/8] zorro: Improve handling of pointers in zorro_device_id::driver_data
From: Uwe Kleine-König (The Capable Hub) @ 2026-06-05 11:56 UTC (permalink / raw)
To: Helge Deller, James E.J. Bottomley, Martin K. Petersen
Cc: linux-ide, linux-m68k, linux-kernel, linux-scsi, netdev,
linux-i2c, linux-fbdev, dri-devel, Christian A. Ehrhardt,
Christian A. Ehrhardt
In-Reply-To: <a3f9e96e-3bbb-4cfc-845c-58649405a1cf@gmx.de>
[-- Attachment #1: Type: text/plain, Size: 4330 bytes --]
Hello Helge,
On Fri, Jun 05, 2026 at 12:44:04AM +0200, Helge Deller wrote:
> On 5/26/26 16:17, Uwe Kleine-König (The Capable Hub) wrote:
Your MUA seems to interpret my UTF-8 encoded name as latin1 and
converted it to UTF-8 making my ö appear as ö. I *think* the problem is
on your side.
> > this series is about improving the handling of pointers in struct
> > zorro_device_id's driver_data.
> >
> > While it's ok on all current Linux platforms to store a pointer in an
> > unsigned long variable, it involves casting that loses type information.
> > This can be nicely seen in patch #7 where after profiting from patch #6
> > the compiler notices a missing const.
> >
> > Preparing for that change, all zorro_device_ids are converted to use
> > named initializers, which is also a nice cleanup that could stand for
> > itself, as it improves readability for humans. (That is necessary
> > because an anonymous union can be initialized by name, but not using a
> > list initializer.)
> >
> > My motivation for this series is the CHERI hardware extension. With that
> > pointers are bigger than longs and thus you cannot store pointers in
> > zorro_device_id::driver_data. So this series is also about getting
> > support for CHERI into the mainline, but I hope the clean up effects
> > mentioned above are justification enough to accept this series.
> >
> > The dependencies in this series are as follows:
> >
> > - Patch #5 depends on #1, #2
> > - Patches #7 and #8 depend on patch #6.
> >
> > So if the ata maintainers agreed to merge their patch #1 via scsi, and
> > Geert agrees to patch #5 and that it's also merged via scsi, patches #1,
> > #2, #6 and #7 can go in without further coordination.
> >
> > Patches #3, #4 and #5 are only about using the same initialization style
> > for all zorro_device_id and can go in without coordination.
> >
> > Best regards
> > Uwe
> >
> > Uwe Kleine-König (The Capable Hub) (8):
> > ata: pata_budda: Use named initializer for zorro_device_id
> > scsi: Use named initializer for zorro_device_id
> > net: Use named initializer for zorro_device_id arrays
> > i2c: icy: Use named initializer for zorro_device_id arrays
> > video: fm2fb: Use named initializer for zorro_device_id array
> > zorro: Simplify storing pointers in device id struct
> > scsi: zorro7xx: Make use of struct zorro_device_id::driver_data_ptr
> > video: cirrusfb: Make use of struct zorro_device_id::driver_data_ptr
> >
> > drivers/ata/pata_buddha.c | 8 ++++----
> > drivers/i2c/busses/i2c-icy.c | 4 ++--
> > drivers/net/ethernet/8390/hydra.c | 4 ++--
> > drivers/net/ethernet/8390/xsurf100.c | 4 ++--
> > drivers/net/ethernet/8390/zorro8390.c | 6 +++---
> > drivers/net/ethernet/amd/a2065.c | 8 ++++----
> > drivers/net/ethernet/amd/ariadne.c | 4 ++--
> > drivers/scsi/a2091.c | 6 +++---
> > drivers/scsi/gvp11.c | 17 ++++++++--------
> > drivers/scsi/zorro7xx.c | 16 +++++++--------
> > drivers/scsi/zorro_esp.c | 2 +-
> > drivers/video/fbdev/cirrusfb.c | 28 +++++++++++++--------------
> > drivers/video/fbdev/fm2fb.c | 6 +++---
> > include/linux/mod_devicetable.h | 6 +++++-
> > 14 files changed, 62 insertions(+), 57 deletions(-)
>
> you may add to the series:
> Acked-by: Helge Deller <deller@gmx.de>
Thanks!
> Since it touches various subtrees, I assume you will merge it though your tree?
Well, my plan is that the scsi maintainers pick up patches #1, #2, #6
and #7 and I remind you once #6 (i.e. the dependency for #8) is in
Linus' tree. But with your ack the two fb patches can also go in via
scsi.
To James and Martin: I didn't hear from you about my merge suggestion up
to now. The other affected maintainers agreed so far that (assuming
you're using b4) and interpreting Helge's ack as agreement that you also
pick up the fb patches, you can go for
b4 am -l -t -3 -P1,2,5-8 cover.1779803053.git.u.kleine-koenig@baylibre.com
If you like I can also pick up these patches (then with your ack please)
and send them to Linus for the next merge window. Just tell me about
your preference.
Best regards
Uwe
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply
* [PATCH v4 00/14] mfd: lm3533: convert to OF bindings, improve support
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
Convert LM3533 to OF bindings, add missing VIN supply, add support for
setting mapping mode and LED sources based on device tree.
---
Changes in v2:
schema
- maximum led sources for leds set to 4
- anyOf > oneOf in ALS
- improved ALS descriptions
- adjusted example
drivers
- dropped devm convertion of irq and mfd helpers
- all als configuration moved into lm3533_als_setup
- added regulator/consumer.h
- lm3533_bl_setup set before sysfs_create_group in backlight
- added check if LVLED is valid
- LM3533_REG_OUTPUT_CONF1 > LM3533_REG_OUTPUT_CONF2 for LVLED4 and LVLED5
Changes in v3:
- ohm -> ohms
- added default PWM mask to schema
- added commit removing driver regmap wrappers
- added commits which flatten pdata helpers
- adjusted check if als->irq > 0 since als->irq can be negative if error/missing
- added count for children defined in device tree and mfd_cell is allocated
via devm_kcalloc to be able to contain all of them
- fixed backlight boundary check
- fixed count increased unconditionally
- dev_err returns node name instead of reg value
- LM3533_MAX_CURRENT_* defines moved to common header since they are used to clamp
current values read from the tree
- mapping mode commit splitted into 2 (sysfs logic improvement > mode from DT)
- backlight mode configuration set before sysfs group is created
- fixed LVLED check on LEDs setup
- added check if HVLED is valid
- fixed wrong err_sysfs_remove goto in lm3533_bl
- added commit implementing backlight_scale property
Changes in v4:
- fixed regmap_update_bits val and mask swap in lm3533_als_set_int_mode
- fixed als->irq check in store_thresh_either_en
- removed clamping of r_select in als driver
- added use_of_reg and of_reg for backlight and leds registration
- added intermediate step in asigning props.brightness
- fixed HVLED/LVLED configuration overwriting
- added bounds check for num_leds in leds and backlight driver
- switched to regmap_clean/set/assign/test_bits helpers where appropriate
- dropped extern from header function declartions
- switched lm3533 pointer in cell structures to regmap
- sysfs_create_group > device_add_group
- changes in backlight sysfs were expanded to all properties
---
Svyatoslav Ryhel (14):
dt-bindings: leds: Document TI LM3533 LED controller
mfd: lm3533: Remove driver specific regmap wrappers
mfd: lm3533: Remove extern from shared functions in the header
mfd: lm3533: Pass only regmap and light sensor presence to child
devices
iio: light: lm3533-als: Remove redundant pdata helpers
mfd: lm3533-core: Remove redundant pdata helpers
mfd: lm3533: Switch sysfs_create_group() to device_add_group()
mfd: lm3533: Convert to use OF bindings
mfd: lm3533: Add support for VIN power supply
mfd: lm3533: Set DMA mask
video: backlight: lm3533_bl: Improve logic of sysfs functions
video: backlight: lm3533_bl: Set initial mapping mode from DT
video: backlight: lm3533_bl: Implement backlight_scale property
video: leds: backlight: lm3533: Support getting LED sources from DT
.../leds/backlight/ti,lm3533-backlight.yaml | 69 ++++
.../bindings/leds/ti,lm3533-leds.yaml | 67 ++++
.../devicetree/bindings/leds/ti,lm3533.yaml | 169 ++++++++
drivers/iio/light/lm3533-als.c | 179 ++++-----
drivers/leds/leds-lm3533.c | 181 ++++++---
drivers/mfd/lm3533-core.c | 365 +++++++-----------
drivers/mfd/lm3533-ctrlbank.c | 27 +-
drivers/video/backlight/lm3533_bl.c | 223 ++++++-----
include/linux/mfd/lm3533.h | 75 +---
9 files changed, 806 insertions(+), 549 deletions(-)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml
create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3533-leds.yaml
create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3533.yaml
--
2.53.0
^ permalink raw reply
* [PATCH v4 01/14] dt-bindings: leds: Document TI LM3533 LED controller
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Document the LM3533 - a complete power source for backlight, keypad and
indicator LEDs in smartphone handsets. The high-voltage inductive boost
converter provides the power for two series LED strings display backlight
and keypad functions.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Jonathan Cameron <jic23@kernel.org> #for light sensor
Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> #for backlight
---
.../leds/backlight/ti,lm3533-backlight.yaml | 69 +++++++
.../bindings/leds/ti,lm3533-leds.yaml | 67 +++++++
.../devicetree/bindings/leds/ti,lm3533.yaml | 169 ++++++++++++++++++
3 files changed, 305 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml
create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3533-leds.yaml
create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3533.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml
new file mode 100644
index 000000000000..a25846e9b375
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/ti,lm3533-backlight.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI LM3533 high voltage series LED strings
+
+description:
+ This is part of the TI LM3533 MFD device. It represents two high voltage series
+ LED strings for display backlight controlled by the TI LM3533.
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+allOf:
+ - $ref: /schemas/leds/backlight/common.yaml#
+
+properties:
+ compatible:
+ const: ti,lm3533-backlight
+
+ reg:
+ description: Control bank selection (0 = bank A, 1 = bank B).
+ maximum: 1
+
+ led-max-microamp:
+ description: maximum current in uA with a 800 uA step.
+ minimum: 5000
+ maximum: 29800
+ default: 5000
+
+ led-sources:
+ description: |
+ HVLED strings associated with this control bank:
+ 0 - HVLED1
+ 1 - HVLED2
+ minItems: 1
+ maxItems: 2
+ items:
+ maximum: 1
+
+ ti,pwm-config-mask:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ Control Bank PWM Configuration Register mask that allows to configure
+ PWM input in Zones 0-4
+ BIT(0) - PWM Input is enabled
+ BIT(1) - PWM Input is enabled in Zone 0
+ BIT(2) - PWM Input is enabled in Zone 1
+ BIT(3) - PWM Input is enabled in Zone 2
+ BIT(4) - PWM Input is enabled in Zone 3
+ BIT(5) - PWM Input is enabled in Zone 4
+ default: 0
+
+ ti,linear-mapping-mode:
+ description:
+ Enable linear mapping mode. If disabled, then it will use exponential
+ mapping mode in which the ramp up/down appears to have a more uniform
+ transition to the human eye.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+# see ti,lm3533.yaml for an example
diff --git a/Documentation/devicetree/bindings/leds/ti,lm3533-leds.yaml b/Documentation/devicetree/bindings/leds/ti,lm3533-leds.yaml
new file mode 100644
index 000000000000..d8dbefef3323
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/ti,lm3533-leds.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/ti,lm3533-leds.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI LM3533 low voltage control banks for individual LEDs
+
+description:
+ This is part of the TI LM3533 MFD device. It represents four low voltage
+ control banks for individual LEDs provided by the TI LM3533.
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+allOf:
+ - $ref: /schemas/leds/common.yaml#
+
+properties:
+ compatible:
+ const: ti,lm3533-leds
+
+ reg:
+ description:
+ Control bank selection (2 = bank C, 3 = bank D, 4 = bank E, 5 = bank F).
+ minimum: 2
+ maximum: 5
+
+ led-max-microamp:
+ description: maximum current in uA with a 800 uA step.
+ minimum: 5000
+ maximum: 29800
+ default: 5000
+
+ led-sources:
+ description: |
+ LVLED associated with this control bank. May be more than 1 source per bank.
+ 0 - LVLED1
+ 1 - LVLED2
+ 2 - LVLED3
+ 3 - LVLED4
+ 4 - LVLED5
+ minItems: 1
+ maxItems: 5
+ items:
+ maximum: 4
+
+ ti,pwm-config-mask:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ Control Bank PWM Configuration Register mask that allows to configure
+ PWM input in Zones 0-4
+ BIT(0) - PWM Input is enabled
+ BIT(1) - PWM Input is enabled in Zone 0
+ BIT(2) - PWM Input is enabled in Zone 1
+ BIT(3) - PWM Input is enabled in Zone 2
+ BIT(4) - PWM Input is enabled in Zone 3
+ BIT(5) - PWM Input is enabled in Zone 4
+ default: 0
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+# see ti,lm3533.yaml for an example
diff --git a/Documentation/devicetree/bindings/leds/ti,lm3533.yaml b/Documentation/devicetree/bindings/leds/ti,lm3533.yaml
new file mode 100644
index 000000000000..bdc05a9f3d66
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/ti,lm3533.yaml
@@ -0,0 +1,169 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/ti,lm3533.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI LM3533 Complete Lighting Power Solution
+
+description: >
+ The LM3533 is a complete power source for backlight, keypad, and indicator LEDs
+ in smartphone handsets. The high-voltage inductive boost converter provides the
+ power for two high voltage series LED strings for display backlight and four low
+ voltage control banks for individual LEDs. Additionally, LM3533 features an
+ interface for an external light sensor.
+
+ https://www.ti.com/product/LM3533
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+properties:
+ compatible:
+ const: ti,lm3533
+
+ reg:
+ maxItems: 1
+
+ enable-gpios:
+ description: GPIO connected to the HWEN pin.
+ maxItems: 1
+
+ vin-supply:
+ description: Supply connected to the IN line (2.7 V to 5.5 V).
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ ti,boost-ovp-microvolt:
+ description: boost OVP select (16V, 24V, 32V, 40V)
+ enum: [ 16000000, 24000000, 32000000, 40000000 ]
+ default: 16000000
+
+ ti,boost-freq-hz:
+ description: boost frequency select (500KHz or 1MHz)
+ enum: [ 500000, 1000000 ]
+ default: 500000
+
+ light-sensor:
+ type: object
+ additionalProperties: false
+
+ properties:
+ compatible:
+ const: ti,lm3533-als
+
+ interrupts:
+ maxItems: 1
+
+ ti,resistor-ohms:
+ description:
+ Internal configuration resistor value when light sensor is in
+ Analog Sensor mode and PWM mode is disabled. The expectation is
+ the input is a current from the external analog light sensor and
+ this is used to convert it to a voltage within the target range.
+ minimum: 1575
+ maximum: 200000
+
+ ti,pwm-mode:
+ type: boolean
+ description:
+ Switch for mode in which light sensor interface is running. If
+ this property is set then the light sensor interface is running
+ in PWM mode, internal resistor value is set to high-impedance (0)
+ and ti,resistor-ohms property is ignored.
+
+ required:
+ - compatible
+
+ oneOf:
+ - required:
+ - ti,resistor-ohms
+ - required:
+ - ti,pwm-mode
+
+patternProperties:
+ "^backlight@[01]$":
+ $ref: /schemas/leds/backlight/ti,lm3533-backlight.yaml#
+
+ "^led@[2-5]$":
+ $ref: /schemas/leds/ti,lm3533-leds.yaml#
+
+required:
+ - compatible
+ - reg
+ - '#address-cells'
+ - '#size-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led-controller@36 {
+ compatible = "ti,lm3533";
+ reg = <0x36>;
+
+ enable-gpios = <&gpio 110 GPIO_ACTIVE_HIGH>;
+ vin-supply = <&vdd_3v3_bat>;
+
+ ti,boost-ovp-microvolt = <24000000>;
+ ti,boost-freq-hz = <500000>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight@0 {
+ compatible = "ti,lm3533-backlight";
+ reg = <0>;
+
+ default-brightness = <113>;
+
+ led-max-microamp = <23400>;
+ led-sources = <0 1>;
+ };
+
+ led@2 {
+ compatible = "ti,lm3533-leds";
+ reg = <2>;
+
+ led-max-microamp = <23400>;
+ led-sources = <0 1>;
+ };
+
+ led@4 {
+ compatible = "ti,lm3533-leds";
+ reg = <4>;
+
+ led-max-microamp = <23400>;
+ led-sources = <2>;
+ };
+
+ led@5 {
+ compatible = "ti,lm3533-leds";
+ reg = <5>;
+
+ led-max-microamp = <23400>;
+ led-sources = <3 4>;
+ };
+
+ light-sensor {
+ compatible = "ti,lm3533-als";
+
+ interrupt-parent = <&gpio>;
+ interrupts = <80 IRQ_TYPE_LEVEL_LOW>;
+
+ ti,pwm-mode;
+ };
+ };
+ };
+...
--
2.53.0
^ permalink raw reply related
* [PATCH v4 02/14] mfd: lm3533: Remove driver specific regmap wrappers
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Remove driver-specific regmap wrappers in favor of using regmap helpers
directly.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/iio/light/lm3533-als.c | 79 +++++++++++++----------------
drivers/leds/leds-lm3533.c | 58 ++++++++-------------
drivers/mfd/lm3533-core.c | 73 ++++----------------------
drivers/mfd/lm3533-ctrlbank.c | 22 ++++----
drivers/video/backlight/lm3533_bl.c | 33 ++++--------
include/linux/mfd/lm3533.h | 8 +--
6 files changed, 90 insertions(+), 183 deletions(-)
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index 99f0b903018c..44b104c2d77f 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -17,6 +17,7 @@
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
@@ -64,7 +65,7 @@ static int lm3533_als_get_adc(struct iio_dev *indio_dev, bool average,
{
struct lm3533_als *als = iio_priv(indio_dev);
u8 reg;
- u8 val;
+ u32 val;
int ret;
if (average)
@@ -72,7 +73,7 @@ static int lm3533_als_get_adc(struct iio_dev *indio_dev, bool average,
else
reg = LM3533_REG_ALS_READ_ADC_RAW;
- ret = lm3533_read(als->lm3533, reg, &val);
+ ret = regmap_read(als->lm3533->regmap, reg, &val);
if (ret) {
dev_err(&indio_dev->dev, "failed to read adc\n");
return ret;
@@ -86,10 +87,10 @@ static int lm3533_als_get_adc(struct iio_dev *indio_dev, bool average,
static int _lm3533_als_get_zone(struct iio_dev *indio_dev, u8 *zone)
{
struct lm3533_als *als = iio_priv(indio_dev);
- u8 val;
+ u32 val;
int ret;
- ret = lm3533_read(als->lm3533, LM3533_REG_ALS_ZONE_INFO, &val);
+ ret = regmap_read(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO, &val);
if (ret) {
dev_err(&indio_dev->dev, "failed to read zone\n");
return ret;
@@ -127,7 +128,7 @@ static inline u8 lm3533_als_get_target_reg(unsigned channel, unsigned zone)
}
static int lm3533_als_get_target(struct iio_dev *indio_dev, unsigned channel,
- unsigned zone, u8 *val)
+ unsigned zone, u32 *val)
{
struct lm3533_als *als = iio_priv(indio_dev);
u8 reg;
@@ -140,7 +141,7 @@ static int lm3533_als_get_target(struct iio_dev *indio_dev, unsigned channel,
return -EINVAL;
reg = lm3533_als_get_target_reg(channel, zone);
- ret = lm3533_read(als->lm3533, reg, val);
+ ret = regmap_read(als->lm3533->regmap, reg, val);
if (ret)
dev_err(&indio_dev->dev, "failed to get target current\n");
@@ -161,7 +162,7 @@ static int lm3533_als_set_target(struct iio_dev *indio_dev, unsigned channel,
return -EINVAL;
reg = lm3533_als_get_target_reg(channel, zone);
- ret = lm3533_write(als->lm3533, reg, val);
+ ret = regmap_write(als->lm3533->regmap, reg, val);
if (ret)
dev_err(&indio_dev->dev, "failed to set target current\n");
@@ -171,8 +172,8 @@ static int lm3533_als_set_target(struct iio_dev *indio_dev, unsigned channel,
static int lm3533_als_get_current(struct iio_dev *indio_dev, unsigned channel,
int *val)
{
+ u32 target;
u8 zone;
- u8 target;
int ret;
ret = lm3533_als_get_zone(indio_dev, &zone);
@@ -271,16 +272,10 @@ static irqreturn_t lm3533_als_isr(int irq, void *dev_id)
static int lm3533_als_set_int_mode(struct iio_dev *indio_dev, int enable)
{
struct lm3533_als *als = iio_priv(indio_dev);
- u8 mask = LM3533_ALS_INT_ENABLE_MASK;
- u8 val;
int ret;
- if (enable)
- val = mask;
- else
- val = 0;
-
- ret = lm3533_update(als->lm3533, LM3533_REG_ALS_ZONE_INFO, val, mask);
+ ret = regmap_assign_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
+ LM3533_ALS_INT_ENABLE_MASK, enable);
if (ret) {
dev_err(&indio_dev->dev, "failed to set int mode %d\n",
enable);
@@ -293,17 +288,16 @@ static int lm3533_als_set_int_mode(struct iio_dev *indio_dev, int enable)
static int lm3533_als_get_int_mode(struct iio_dev *indio_dev, int *enable)
{
struct lm3533_als *als = iio_priv(indio_dev);
- u8 mask = LM3533_ALS_INT_ENABLE_MASK;
- u8 val;
int ret;
- ret = lm3533_read(als->lm3533, LM3533_REG_ALS_ZONE_INFO, &val);
- if (ret) {
+ ret = regmap_test_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
+ LM3533_ALS_INT_ENABLE_MASK);
+ if (ret < 0) {
dev_err(&indio_dev->dev, "failed to get int mode\n");
return ret;
}
- *enable = !!(val & mask);
+ *enable = ret;
return 0;
}
@@ -316,7 +310,7 @@ static inline u8 lm3533_als_get_threshold_reg(unsigned nr, bool raising)
}
static int lm3533_als_get_threshold(struct iio_dev *indio_dev, unsigned nr,
- bool raising, u8 *val)
+ bool raising, u32 *val)
{
struct lm3533_als *als = iio_priv(indio_dev);
u8 reg;
@@ -326,7 +320,7 @@ static int lm3533_als_get_threshold(struct iio_dev *indio_dev, unsigned nr,
return -EINVAL;
reg = lm3533_als_get_threshold_reg(nr, raising);
- ret = lm3533_read(als->lm3533, reg, val);
+ ret = regmap_read(als->lm3533->regmap, reg, val);
if (ret)
dev_err(&indio_dev->dev, "failed to get threshold\n");
@@ -337,8 +331,8 @@ static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr,
bool raising, u8 val)
{
struct lm3533_als *als = iio_priv(indio_dev);
- u8 val2;
u8 reg, reg2;
+ u32 val2;
int ret;
if (nr > LM3533_ALS_THRESH_MAX)
@@ -348,7 +342,7 @@ static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr,
reg2 = lm3533_als_get_threshold_reg(nr, !raising);
mutex_lock(&als->thresh_mutex);
- ret = lm3533_read(als->lm3533, reg2, &val2);
+ ret = regmap_read(als->lm3533->regmap, reg2, &val2);
if (ret) {
dev_err(&indio_dev->dev, "failed to get threshold\n");
goto out;
@@ -363,7 +357,7 @@ static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr,
goto out;
}
- ret = lm3533_write(als->lm3533, reg, val);
+ ret = regmap_write(als->lm3533->regmap, reg, val);
if (ret) {
dev_err(&indio_dev->dev, "failed to set threshold\n");
goto out;
@@ -375,11 +369,11 @@ static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr,
}
static int lm3533_als_get_hysteresis(struct iio_dev *indio_dev, unsigned nr,
- u8 *val)
+ u32 *val)
{
struct lm3533_als *als = iio_priv(indio_dev);
- u8 falling;
- u8 raising;
+ u32 falling;
+ u32 raising;
int ret;
if (nr > LM3533_ALS_THRESH_MAX)
@@ -503,7 +497,7 @@ static ssize_t show_als_attr(struct device *dev,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct lm3533_als_attribute *als_attr = to_lm3533_als_attr(attr);
- u8 val;
+ u32 val;
int ret;
switch (als_attr->type) {
@@ -716,16 +710,10 @@ static const struct attribute_group lm3533_als_attribute_group = {
static int lm3533_als_set_input_mode(struct lm3533_als *als, bool pwm_mode)
{
- u8 mask = LM3533_ALS_INPUT_MODE_MASK;
- u8 val;
int ret;
- if (pwm_mode)
- val = mask; /* pwm input */
- else
- val = 0; /* analog input */
-
- ret = lm3533_update(als->lm3533, LM3533_REG_ALS_CONF, val, mask);
+ ret = regmap_assign_bits(als->lm3533->regmap, LM3533_REG_ALS_CONF,
+ LM3533_ALS_INPUT_MODE_MASK, pwm_mode);
if (ret) {
dev_err(&als->pdev->dev, "failed to set input mode %d\n",
pwm_mode);
@@ -744,7 +732,8 @@ static int lm3533_als_set_resistor(struct lm3533_als *als, u8 val)
return -EINVAL;
}
- ret = lm3533_write(als->lm3533, LM3533_REG_ALS_RESISTOR_SELECT, val);
+ ret = regmap_write(als->lm3533->regmap, LM3533_REG_ALS_RESISTOR_SELECT,
+ val);
if (ret) {
dev_err(&als->pdev->dev, "failed to set resistor\n");
return ret;
@@ -774,11 +763,11 @@ static int lm3533_als_setup(struct lm3533_als *als,
static int lm3533_als_setup_irq(struct lm3533_als *als, void *dev)
{
- u8 mask = LM3533_ALS_INT_ENABLE_MASK;
int ret;
/* Make sure interrupts are disabled. */
- ret = lm3533_update(als->lm3533, LM3533_REG_ALS_ZONE_INFO, 0, mask);
+ ret = regmap_clear_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
+ LM3533_ALS_INT_ENABLE_MASK);
if (ret) {
dev_err(&als->pdev->dev, "failed to disable interrupts\n");
return ret;
@@ -798,10 +787,10 @@ static int lm3533_als_setup_irq(struct lm3533_als *als, void *dev)
static int lm3533_als_enable(struct lm3533_als *als)
{
- u8 mask = LM3533_ALS_ENABLE_MASK;
int ret;
- ret = lm3533_update(als->lm3533, LM3533_REG_ALS_CONF, mask, mask);
+ ret = regmap_set_bits(als->lm3533->regmap, LM3533_REG_ALS_CONF,
+ LM3533_ALS_ENABLE_MASK);
if (ret)
dev_err(&als->pdev->dev, "failed to enable ALS\n");
@@ -810,10 +799,10 @@ static int lm3533_als_enable(struct lm3533_als *als)
static int lm3533_als_disable(struct lm3533_als *als)
{
- u8 mask = LM3533_ALS_ENABLE_MASK;
int ret;
- ret = lm3533_update(als->lm3533, LM3533_REG_ALS_CONF, 0, mask);
+ ret = regmap_clear_bits(als->lm3533->regmap, LM3533_REG_ALS_CONF,
+ LM3533_ALS_ENABLE_MASK);
if (ret)
dev_err(&als->pdev->dev, "failed to disable ALS\n");
diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c
index 45795f2a1042..a48991958eae 100644
--- a/drivers/leds/leds-lm3533.c
+++ b/drivers/leds/leds-lm3533.c
@@ -12,6 +12,7 @@
#include <linux/mfd/core.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/mfd/lm3533.h>
@@ -80,7 +81,6 @@ static inline u8 lm3533_led_get_pattern_reg(struct lm3533_led *led,
static int lm3533_led_pattern_enable(struct lm3533_led *led, int enable)
{
u8 mask;
- u8 val;
int pattern;
int state;
int ret = 0;
@@ -96,12 +96,8 @@ static int lm3533_led_pattern_enable(struct lm3533_led *led, int enable)
pattern = lm3533_led_get_pattern(led);
mask = 1 << (2 * pattern);
- if (enable)
- val = mask;
- else
- val = 0;
-
- ret = lm3533_update(led->lm3533, LM3533_REG_PATTERN_ENABLE, val, mask);
+ ret = regmap_assign_bits(led->lm3533->regmap,
+ LM3533_REG_PATTERN_ENABLE, mask, enable);
if (ret) {
dev_err(led->cdev.dev, "failed to enable pattern %d (%d)\n",
pattern, enable);
@@ -131,7 +127,7 @@ static int lm3533_led_set(struct led_classdev *cdev,
static enum led_brightness lm3533_led_get(struct led_classdev *cdev)
{
struct lm3533_led *led = to_lm3533_led(cdev);
- u8 val;
+ u32 val;
int ret;
ret = lm3533_ctrlbank_get_brightness(&led->cb, &val);
@@ -259,7 +255,7 @@ static u8 lm3533_led_delay_set(struct lm3533_led *led, u8 base,
dev_dbg(led->cdev.dev, "%s - %lu: %u (0x%02x)\n", __func__,
*delay, t, val);
reg = lm3533_led_get_pattern_reg(led, base);
- ret = lm3533_write(led->lm3533, reg, val);
+ ret = regmap_write(led->lm3533->regmap, reg, val);
if (ret)
dev_err(led->cdev.dev, "failed to set delay (%02x)\n", reg);
@@ -337,10 +333,10 @@ static ssize_t show_risefalltime(struct device *dev,
struct lm3533_led *led = to_lm3533_led(led_cdev);
ssize_t ret;
u8 reg;
- u8 val;
+ u32 val;
reg = lm3533_led_get_pattern_reg(led, base);
- ret = lm3533_read(led->lm3533, reg, &val);
+ ret = regmap_read(led->lm3533->regmap, reg, &val);
if (ret)
return ret;
@@ -375,7 +371,7 @@ static ssize_t store_risefalltime(struct device *dev,
return -EINVAL;
reg = lm3533_led_get_pattern_reg(led, base);
- ret = lm3533_write(led->lm3533, reg, val);
+ ret = regmap_write(led->lm3533->regmap, reg, val);
if (ret)
return ret;
@@ -405,11 +401,11 @@ static ssize_t show_als_channel(struct device *dev,
struct lm3533_led *led = to_lm3533_led(led_cdev);
unsigned channel;
u8 reg;
- u8 val;
+ u32 val;
int ret;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = lm3533_read(led->lm3533, reg, &val);
+ ret = regmap_read(led->lm3533->regmap, reg, &val);
if (ret)
return ret;
@@ -441,7 +437,7 @@ static ssize_t store_als_channel(struct device *dev,
mask = LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK;
val = channel - 1;
- ret = lm3533_update(led->lm3533, reg, val, mask);
+ ret = regmap_update_bits(led->lm3533->regmap, reg, mask, val);
if (ret)
return ret;
@@ -455,11 +451,11 @@ static ssize_t show_als_en(struct device *dev,
struct lm3533_led *led = to_lm3533_led(led_cdev);
bool enable;
u8 reg;
- u8 val;
+ u32 val;
int ret;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = lm3533_read(led->lm3533, reg, &val);
+ ret = regmap_read(led->lm3533->regmap, reg, &val);
if (ret)
return ret;
@@ -476,22 +472,15 @@ static ssize_t store_als_en(struct device *dev,
struct lm3533_led *led = to_lm3533_led(led_cdev);
unsigned enable;
u8 reg;
- u8 mask;
- u8 val;
int ret;
if (kstrtouint(buf, 0, &enable))
return -EINVAL;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- mask = LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK;
- if (enable)
- val = mask;
- else
- val = 0;
-
- ret = lm3533_update(led->lm3533, reg, val, mask);
+ ret = regmap_assign_bits(led->lm3533->regmap, reg,
+ LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK, enable);
if (ret)
return ret;
@@ -504,12 +493,12 @@ static ssize_t show_linear(struct device *dev,
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lm3533_led *led = to_lm3533_led(led_cdev);
u8 reg;
- u8 val;
+ u32 val;
int linear;
int ret;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = lm3533_read(led->lm3533, reg, &val);
+ ret = regmap_read(led->lm3533->regmap, reg, &val);
if (ret)
return ret;
@@ -529,22 +518,15 @@ static ssize_t store_linear(struct device *dev,
struct lm3533_led *led = to_lm3533_led(led_cdev);
unsigned long linear;
u8 reg;
- u8 mask;
- u8 val;
int ret;
if (kstrtoul(buf, 0, &linear))
return -EINVAL;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- mask = LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK;
-
- if (linear)
- val = mask;
- else
- val = 0;
- ret = lm3533_update(led->lm3533, reg, val, mask);
+ ret = regmap_assign_bits(led->lm3533->regmap, reg,
+ LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK, linear);
if (ret)
return ret;
@@ -557,7 +539,7 @@ static ssize_t show_pwm(struct device *dev,
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lm3533_led *led = to_lm3533_led(led_cdev);
- u8 val;
+ u32 val;
int ret;
ret = lm3533_ctrlbank_get_pwm(&led->cb, &val);
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 0a2409d00b2e..f9bdc0a1d9be 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -80,66 +80,14 @@ static struct mfd_cell lm3533_led_devs[] = {
},
};
-int lm3533_read(struct lm3533 *lm3533, u8 reg, u8 *val)
-{
- int tmp;
- int ret;
-
- ret = regmap_read(lm3533->regmap, reg, &tmp);
- if (ret < 0) {
- dev_err(lm3533->dev, "failed to read register %02x: %d\n",
- reg, ret);
- return ret;
- }
-
- *val = tmp;
-
- dev_dbg(lm3533->dev, "read [%02x]: %02x\n", reg, *val);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(lm3533_read);
-
-int lm3533_write(struct lm3533 *lm3533, u8 reg, u8 val)
-{
- int ret;
-
- dev_dbg(lm3533->dev, "write [%02x]: %02x\n", reg, val);
-
- ret = regmap_write(lm3533->regmap, reg, val);
- if (ret < 0) {
- dev_err(lm3533->dev, "failed to write register %02x: %d\n",
- reg, ret);
- }
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(lm3533_write);
-
-int lm3533_update(struct lm3533 *lm3533, u8 reg, u8 val, u8 mask)
-{
- int ret;
-
- dev_dbg(lm3533->dev, "update [%02x]: %02x/%02x\n", reg, val, mask);
-
- ret = regmap_update_bits(lm3533->regmap, reg, mask, val);
- if (ret < 0) {
- dev_err(lm3533->dev, "failed to update register %02x: %d\n",
- reg, ret);
- }
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(lm3533_update);
-
static int lm3533_set_boost_freq(struct lm3533 *lm3533,
enum lm3533_boost_freq freq)
{
int ret;
- ret = lm3533_update(lm3533, LM3533_REG_BOOST_PWM,
- freq << LM3533_BOOST_FREQ_SHIFT,
- LM3533_BOOST_FREQ_MASK);
+ ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
+ LM3533_BOOST_FREQ_MASK,
+ freq << LM3533_BOOST_FREQ_SHIFT);
if (ret)
dev_err(lm3533->dev, "failed to set boost frequency\n");
@@ -152,9 +100,9 @@ static int lm3533_set_boost_ovp(struct lm3533 *lm3533,
{
int ret;
- ret = lm3533_update(lm3533, LM3533_REG_BOOST_PWM,
- ovp << LM3533_BOOST_OVP_SHIFT,
- LM3533_BOOST_OVP_MASK);
+ ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
+ LM3533_BOOST_OVP_MASK,
+ ovp << LM3533_BOOST_OVP_SHIFT);
if (ret)
dev_err(lm3533->dev, "failed to set boost ovp\n");
@@ -181,7 +129,8 @@ static int lm3533_set_hvled_config(struct lm3533 *lm3533, u8 hvled, u8 bl)
mask = LM3533_BL_ID_MASK << shift;
val = bl << shift;
- ret = lm3533_update(lm3533, LM3533_REG_OUTPUT_CONF1, val, mask);
+ ret = regmap_update_bits(lm3533->regmap, LM3533_REG_OUTPUT_CONF1,
+ mask, val);
if (ret)
dev_err(lm3533->dev, "failed to set hvled config\n");
@@ -216,7 +165,7 @@ static int lm3533_set_lvled_config(struct lm3533 *lm3533, u8 lvled, u8 led)
mask = LM3533_LED_ID_MASK << shift;
val = led << shift;
- ret = lm3533_update(lm3533, reg, val, mask);
+ ret = regmap_update_bits(lm3533->regmap, reg, mask, val);
if (ret)
dev_err(lm3533->dev, "failed to set lvled config\n");
@@ -258,7 +207,7 @@ static ssize_t show_output(struct device *dev,
struct lm3533_device_attribute *lattr = to_lm3533_dev_attr(attr);
int id = lattr->u.output.id;
u8 reg;
- u8 val;
+ u32 val;
u8 mask;
int shift;
int ret;
@@ -278,7 +227,7 @@ static ssize_t show_output(struct device *dev,
mask = LM3533_LED_ID_MASK << shift;
}
- ret = lm3533_read(lm3533, reg, &val);
+ ret = regmap_read(lm3533->regmap, reg, &val);
if (ret)
return ret;
diff --git a/drivers/mfd/lm3533-ctrlbank.c b/drivers/mfd/lm3533-ctrlbank.c
index 2537dfade51c..b78c130d7712 100644
--- a/drivers/mfd/lm3533-ctrlbank.c
+++ b/drivers/mfd/lm3533-ctrlbank.c
@@ -9,6 +9,7 @@
#include <linux/device.h>
#include <linux/module.h>
+#include <linux/regmap.h>
#include <linux/mfd/lm3533.h>
@@ -38,8 +39,8 @@ int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb)
dev_dbg(cb->dev, "%s - %d\n", __func__, cb->id);
mask = 1 << cb->id;
- ret = lm3533_update(cb->lm3533, LM3533_REG_CTRLBANK_ENABLE,
- mask, mask);
+ ret = regmap_set_bits(cb->lm3533->regmap, LM3533_REG_CTRLBANK_ENABLE,
+ mask);
if (ret)
dev_err(cb->dev, "failed to enable ctrlbank %d\n", cb->id);
@@ -55,7 +56,8 @@ int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb)
dev_dbg(cb->dev, "%s - %d\n", __func__, cb->id);
mask = 1 << cb->id;
- ret = lm3533_update(cb->lm3533, LM3533_REG_CTRLBANK_ENABLE, 0, mask);
+ ret = regmap_clear_bits(cb->lm3533->regmap, LM3533_REG_CTRLBANK_ENABLE,
+ mask);
if (ret)
dev_err(cb->dev, "failed to disable ctrlbank %d\n", cb->id);
@@ -80,7 +82,7 @@ int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb, u16 imax)
val = (imax - LM3533_MAX_CURRENT_MIN) / LM3533_MAX_CURRENT_STEP;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_MAX_CURRENT_BASE);
- ret = lm3533_write(cb->lm3533, reg, val);
+ ret = regmap_write(cb->lm3533->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to set max current\n");
@@ -94,7 +96,7 @@ int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val)
int ret;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_BRIGHTNESS_BASE);
- ret = lm3533_write(cb->lm3533, reg, val);
+ ret = regmap_write(cb->lm3533->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to set brightness\n");
@@ -102,13 +104,13 @@ int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val)
}
EXPORT_SYMBOL_GPL(lm3533_ctrlbank_set_brightness);
-int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u8 *val)
+int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val)
{
u8 reg;
int ret;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_BRIGHTNESS_BASE);
- ret = lm3533_read(cb->lm3533, reg, val);
+ ret = regmap_read(cb->lm3533->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to get brightness\n");
@@ -135,7 +137,7 @@ int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val)
return -EINVAL;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_PWM_BASE);
- ret = lm3533_write(cb->lm3533, reg, val);
+ ret = regmap_write(cb->lm3533->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to set PWM mask\n");
@@ -143,13 +145,13 @@ int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val)
}
EXPORT_SYMBOL_GPL(lm3533_ctrlbank_set_pwm);
-int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u8 *val)
+int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val)
{
u8 reg;
int ret;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_PWM_BASE);
- ret = lm3533_read(cb->lm3533, reg, val);
+ ret = regmap_read(cb->lm3533->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to get PWM mask\n");
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index babfd3ceec86..03cce6aeb014 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/backlight.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/mfd/lm3533.h>
@@ -45,7 +46,7 @@ static int lm3533_bl_update_status(struct backlight_device *bd)
static int lm3533_bl_get_brightness(struct backlight_device *bd)
{
struct lm3533_bl *bl = bl_get_data(bd);
- u8 val;
+ u32 val;
int ret;
ret = lm3533_ctrlbank_get_brightness(&bl->cb, &val);
@@ -82,12 +83,12 @@ static ssize_t show_als_en(struct device *dev,
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
- u8 val;
+ u32 val;
u8 mask;
bool enable;
int ret;
- ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val);
+ ret = regmap_read(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
if (ret)
return ret;
@@ -104,7 +105,6 @@ static ssize_t store_als_en(struct device *dev,
struct lm3533_bl *bl = dev_get_drvdata(dev);
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
int enable;
- u8 val;
u8 mask;
int ret;
@@ -113,13 +113,8 @@ static ssize_t store_als_en(struct device *dev,
mask = 1 << (2 * ctrlbank);
- if (enable)
- val = mask;
- else
- val = 0;
-
- ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val,
- mask);
+ ret = regmap_assign_bits(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ mask, enable);
if (ret)
return ret;
@@ -130,12 +125,12 @@ static ssize_t show_linear(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
- u8 val;
+ u32 val;
u8 mask;
int linear;
int ret;
- ret = lm3533_read(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, &val);
+ ret = regmap_read(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
if (ret)
return ret;
@@ -156,7 +151,6 @@ static ssize_t store_linear(struct device *dev,
struct lm3533_bl *bl = dev_get_drvdata(dev);
unsigned long linear;
u8 mask;
- u8 val;
int ret;
if (kstrtoul(buf, 0, &linear))
@@ -164,13 +158,8 @@ static ssize_t store_linear(struct device *dev,
mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1);
- if (linear)
- val = mask;
- else
- val = 0;
-
- ret = lm3533_update(bl->lm3533, LM3533_REG_CTRLBANK_AB_BCONF, val,
- mask);
+ ret = regmap_assign_bits(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ mask, linear);
if (ret)
return ret;
@@ -182,7 +171,7 @@ static ssize_t show_pwm(struct device *dev,
char *buf)
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
- u8 val;
+ u32 val;
int ret;
ret = lm3533_ctrlbank_get_pwm(&bl->cb, &val);
diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
index 69059a7a2ce5..db0a5e5c9e39 100644
--- a/include/linux/mfd/lm3533.h
+++ b/include/linux/mfd/lm3533.h
@@ -86,14 +86,10 @@ extern int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb);
extern int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb);
extern int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
-extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u8 *val);
+extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val);
extern int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb,
u16 imax);
extern int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
-extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u8 *val);
-
-extern int lm3533_read(struct lm3533 *lm3533, u8 reg, u8 *val);
-extern int lm3533_write(struct lm3533 *lm3533, u8 reg, u8 val);
-extern int lm3533_update(struct lm3533 *lm3533, u8 reg, u8 val, u8 mask);
+extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val);
#endif /* __LINUX_MFD_LM3533_H */
--
2.53.0
^ permalink raw reply related
* [PATCH v4 03/14] mfd: lm3533: Remove extern from shared functions in the header
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Using 'extern' is not required, drop them.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
include/linux/mfd/lm3533.h | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
index db0a5e5c9e39..aab8f08dfcb0 100644
--- a/include/linux/mfd/lm3533.h
+++ b/include/linux/mfd/lm3533.h
@@ -82,14 +82,13 @@ struct lm3533_platform_data {
int num_leds;
};
-extern int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb);
-extern int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb);
-
-extern int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
-extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val);
-extern int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb,
- u16 imax);
-extern int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
-extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val);
+int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb);
+int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb);
+
+int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
+int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val);
+int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb, u16 imax);
+int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
+int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val);
#endif /* __LINUX_MFD_LM3533_H */
--
2.53.0
^ permalink raw reply related
* [PATCH v4 04/14] mfd: lm3533: Pass only regmap and light sensor presence to child devices
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Instead of passing the entire lm3533 core data structure, only pass the
regmap and the light sensor presence flag to child devices.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/iio/light/lm3533-als.c | 32 ++++++++++++++---------------
drivers/leds/leds-lm3533.c | 32 ++++++++++++++++-------------
drivers/mfd/lm3533-ctrlbank.c | 14 ++++++-------
drivers/video/backlight/lm3533_bl.c | 19 +++++++++--------
include/linux/mfd/lm3533.h | 2 +-
5 files changed, 53 insertions(+), 46 deletions(-)
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index 44b104c2d77f..a9af8e2b965f 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -49,7 +49,7 @@
struct lm3533_als {
- struct lm3533 *lm3533;
+ struct regmap *regmap;
struct platform_device *pdev;
unsigned long flags;
@@ -73,7 +73,7 @@ static int lm3533_als_get_adc(struct iio_dev *indio_dev, bool average,
else
reg = LM3533_REG_ALS_READ_ADC_RAW;
- ret = regmap_read(als->lm3533->regmap, reg, &val);
+ ret = regmap_read(als->regmap, reg, &val);
if (ret) {
dev_err(&indio_dev->dev, "failed to read adc\n");
return ret;
@@ -90,7 +90,7 @@ static int _lm3533_als_get_zone(struct iio_dev *indio_dev, u8 *zone)
u32 val;
int ret;
- ret = regmap_read(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO, &val);
+ ret = regmap_read(als->regmap, LM3533_REG_ALS_ZONE_INFO, &val);
if (ret) {
dev_err(&indio_dev->dev, "failed to read zone\n");
return ret;
@@ -141,7 +141,7 @@ static int lm3533_als_get_target(struct iio_dev *indio_dev, unsigned channel,
return -EINVAL;
reg = lm3533_als_get_target_reg(channel, zone);
- ret = regmap_read(als->lm3533->regmap, reg, val);
+ ret = regmap_read(als->regmap, reg, val);
if (ret)
dev_err(&indio_dev->dev, "failed to get target current\n");
@@ -162,7 +162,7 @@ static int lm3533_als_set_target(struct iio_dev *indio_dev, unsigned channel,
return -EINVAL;
reg = lm3533_als_get_target_reg(channel, zone);
- ret = regmap_write(als->lm3533->regmap, reg, val);
+ ret = regmap_write(als->regmap, reg, val);
if (ret)
dev_err(&indio_dev->dev, "failed to set target current\n");
@@ -274,7 +274,7 @@ static int lm3533_als_set_int_mode(struct iio_dev *indio_dev, int enable)
struct lm3533_als *als = iio_priv(indio_dev);
int ret;
- ret = regmap_assign_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
+ ret = regmap_assign_bits(als->regmap, LM3533_REG_ALS_ZONE_INFO,
LM3533_ALS_INT_ENABLE_MASK, enable);
if (ret) {
dev_err(&indio_dev->dev, "failed to set int mode %d\n",
@@ -290,7 +290,7 @@ static int lm3533_als_get_int_mode(struct iio_dev *indio_dev, int *enable)
struct lm3533_als *als = iio_priv(indio_dev);
int ret;
- ret = regmap_test_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
+ ret = regmap_test_bits(als->regmap, LM3533_REG_ALS_ZONE_INFO,
LM3533_ALS_INT_ENABLE_MASK);
if (ret < 0) {
dev_err(&indio_dev->dev, "failed to get int mode\n");
@@ -320,7 +320,7 @@ static int lm3533_als_get_threshold(struct iio_dev *indio_dev, unsigned nr,
return -EINVAL;
reg = lm3533_als_get_threshold_reg(nr, raising);
- ret = regmap_read(als->lm3533->regmap, reg, val);
+ ret = regmap_read(als->regmap, reg, val);
if (ret)
dev_err(&indio_dev->dev, "failed to get threshold\n");
@@ -342,7 +342,7 @@ static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr,
reg2 = lm3533_als_get_threshold_reg(nr, !raising);
mutex_lock(&als->thresh_mutex);
- ret = regmap_read(als->lm3533->regmap, reg2, &val2);
+ ret = regmap_read(als->regmap, reg2, &val2);
if (ret) {
dev_err(&indio_dev->dev, "failed to get threshold\n");
goto out;
@@ -357,7 +357,7 @@ static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr,
goto out;
}
- ret = regmap_write(als->lm3533->regmap, reg, val);
+ ret = regmap_write(als->regmap, reg, val);
if (ret) {
dev_err(&indio_dev->dev, "failed to set threshold\n");
goto out;
@@ -712,7 +712,7 @@ static int lm3533_als_set_input_mode(struct lm3533_als *als, bool pwm_mode)
{
int ret;
- ret = regmap_assign_bits(als->lm3533->regmap, LM3533_REG_ALS_CONF,
+ ret = regmap_assign_bits(als->regmap, LM3533_REG_ALS_CONF,
LM3533_ALS_INPUT_MODE_MASK, pwm_mode);
if (ret) {
dev_err(&als->pdev->dev, "failed to set input mode %d\n",
@@ -732,7 +732,7 @@ static int lm3533_als_set_resistor(struct lm3533_als *als, u8 val)
return -EINVAL;
}
- ret = regmap_write(als->lm3533->regmap, LM3533_REG_ALS_RESISTOR_SELECT,
+ ret = regmap_write(als->regmap, LM3533_REG_ALS_RESISTOR_SELECT,
val);
if (ret) {
dev_err(&als->pdev->dev, "failed to set resistor\n");
@@ -766,7 +766,7 @@ static int lm3533_als_setup_irq(struct lm3533_als *als, void *dev)
int ret;
/* Make sure interrupts are disabled. */
- ret = regmap_clear_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
+ ret = regmap_clear_bits(als->regmap, LM3533_REG_ALS_ZONE_INFO,
LM3533_ALS_INT_ENABLE_MASK);
if (ret) {
dev_err(&als->pdev->dev, "failed to disable interrupts\n");
@@ -789,7 +789,7 @@ static int lm3533_als_enable(struct lm3533_als *als)
{
int ret;
- ret = regmap_set_bits(als->lm3533->regmap, LM3533_REG_ALS_CONF,
+ ret = regmap_set_bits(als->regmap, LM3533_REG_ALS_CONF,
LM3533_ALS_ENABLE_MASK);
if (ret)
dev_err(&als->pdev->dev, "failed to enable ALS\n");
@@ -801,7 +801,7 @@ static int lm3533_als_disable(struct lm3533_als *als)
{
int ret;
- ret = regmap_clear_bits(als->lm3533->regmap, LM3533_REG_ALS_CONF,
+ ret = regmap_clear_bits(als->regmap, LM3533_REG_ALS_CONF,
LM3533_ALS_ENABLE_MASK);
if (ret)
dev_err(&als->pdev->dev, "failed to disable ALS\n");
@@ -845,7 +845,7 @@ static int lm3533_als_probe(struct platform_device *pdev)
indio_dev->modes = INDIO_DIRECT_MODE;
als = iio_priv(indio_dev);
- als->lm3533 = lm3533;
+ als->regmap = lm3533->regmap;
als->pdev = pdev;
als->irq = lm3533->irq;
atomic_set(&als->zone, 0);
diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c
index a48991958eae..f57d97201816 100644
--- a/drivers/leds/leds-lm3533.c
+++ b/drivers/leds/leds-lm3533.c
@@ -42,13 +42,15 @@
struct lm3533_led {
- struct lm3533 *lm3533;
+ struct regmap *regmap;
struct lm3533_ctrlbank cb;
struct led_classdev cdev;
int id;
struct mutex mutex;
unsigned long flags;
+
+ bool have_als;
};
@@ -96,7 +98,7 @@ static int lm3533_led_pattern_enable(struct lm3533_led *led, int enable)
pattern = lm3533_led_get_pattern(led);
mask = 1 << (2 * pattern);
- ret = regmap_assign_bits(led->lm3533->regmap,
+ ret = regmap_assign_bits(led->regmap,
LM3533_REG_PATTERN_ENABLE, mask, enable);
if (ret) {
dev_err(led->cdev.dev, "failed to enable pattern %d (%d)\n",
@@ -255,7 +257,7 @@ static u8 lm3533_led_delay_set(struct lm3533_led *led, u8 base,
dev_dbg(led->cdev.dev, "%s - %lu: %u (0x%02x)\n", __func__,
*delay, t, val);
reg = lm3533_led_get_pattern_reg(led, base);
- ret = regmap_write(led->lm3533->regmap, reg, val);
+ ret = regmap_write(led->regmap, reg, val);
if (ret)
dev_err(led->cdev.dev, "failed to set delay (%02x)\n", reg);
@@ -336,7 +338,7 @@ static ssize_t show_risefalltime(struct device *dev,
u32 val;
reg = lm3533_led_get_pattern_reg(led, base);
- ret = regmap_read(led->lm3533->regmap, reg, &val);
+ ret = regmap_read(led->regmap, reg, &val);
if (ret)
return ret;
@@ -371,7 +373,7 @@ static ssize_t store_risefalltime(struct device *dev,
return -EINVAL;
reg = lm3533_led_get_pattern_reg(led, base);
- ret = regmap_write(led->lm3533->regmap, reg, val);
+ ret = regmap_write(led->regmap, reg, val);
if (ret)
return ret;
@@ -405,7 +407,7 @@ static ssize_t show_als_channel(struct device *dev,
int ret;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = regmap_read(led->lm3533->regmap, reg, &val);
+ ret = regmap_read(led->regmap, reg, &val);
if (ret)
return ret;
@@ -437,7 +439,7 @@ static ssize_t store_als_channel(struct device *dev,
mask = LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK;
val = channel - 1;
- ret = regmap_update_bits(led->lm3533->regmap, reg, mask, val);
+ ret = regmap_update_bits(led->regmap, reg, mask, val);
if (ret)
return ret;
@@ -455,7 +457,7 @@ static ssize_t show_als_en(struct device *dev,
int ret;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = regmap_read(led->lm3533->regmap, reg, &val);
+ ret = regmap_read(led->regmap, reg, &val);
if (ret)
return ret;
@@ -479,7 +481,7 @@ static ssize_t store_als_en(struct device *dev,
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = regmap_assign_bits(led->lm3533->regmap, reg,
+ ret = regmap_assign_bits(led->regmap, reg,
LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK, enable);
if (ret)
return ret;
@@ -498,7 +500,7 @@ static ssize_t show_linear(struct device *dev,
int ret;
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = regmap_read(led->lm3533->regmap, reg, &val);
+ ret = regmap_read(led->regmap, reg, &val);
if (ret)
return ret;
@@ -525,7 +527,7 @@ static ssize_t store_linear(struct device *dev,
reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE);
- ret = regmap_assign_bits(led->lm3533->regmap, reg,
+ ret = regmap_assign_bits(led->regmap, reg,
LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK, linear);
if (ret)
return ret;
@@ -597,7 +599,7 @@ static umode_t lm3533_led_attr_is_visible(struct kobject *kobj,
if (attr == &dev_attr_als_channel.attr ||
attr == &dev_attr_als_en.attr) {
- if (!led->lm3533->have_als)
+ if (!led->have_als)
mode = 0;
}
@@ -654,7 +656,9 @@ static int lm3533_led_probe(struct platform_device *pdev)
if (!led)
return -ENOMEM;
- led->lm3533 = lm3533;
+ led->regmap = lm3533->regmap;
+ led->have_als = lm3533->have_als;
+
led->cdev.name = pdata->name;
led->cdev.default_trigger = pdata->default_trigger;
led->cdev.brightness_set_blocking = lm3533_led_set;
@@ -670,7 +674,7 @@ static int lm3533_led_probe(struct platform_device *pdev)
* registration so use parent device (for error reporting) until
* registered.
*/
- led->cb.lm3533 = lm3533;
+ led->cb.regmap = lm3533->regmap;
led->cb.id = lm3533_led_get_ctrlbank_id(led);
led->cb.dev = lm3533->dev;
diff --git a/drivers/mfd/lm3533-ctrlbank.c b/drivers/mfd/lm3533-ctrlbank.c
index b78c130d7712..07aec46e8c0a 100644
--- a/drivers/mfd/lm3533-ctrlbank.c
+++ b/drivers/mfd/lm3533-ctrlbank.c
@@ -39,7 +39,7 @@ int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb)
dev_dbg(cb->dev, "%s - %d\n", __func__, cb->id);
mask = 1 << cb->id;
- ret = regmap_set_bits(cb->lm3533->regmap, LM3533_REG_CTRLBANK_ENABLE,
+ ret = regmap_set_bits(cb->regmap, LM3533_REG_CTRLBANK_ENABLE,
mask);
if (ret)
dev_err(cb->dev, "failed to enable ctrlbank %d\n", cb->id);
@@ -56,7 +56,7 @@ int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb)
dev_dbg(cb->dev, "%s - %d\n", __func__, cb->id);
mask = 1 << cb->id;
- ret = regmap_clear_bits(cb->lm3533->regmap, LM3533_REG_CTRLBANK_ENABLE,
+ ret = regmap_clear_bits(cb->regmap, LM3533_REG_CTRLBANK_ENABLE,
mask);
if (ret)
dev_err(cb->dev, "failed to disable ctrlbank %d\n", cb->id);
@@ -82,7 +82,7 @@ int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb, u16 imax)
val = (imax - LM3533_MAX_CURRENT_MIN) / LM3533_MAX_CURRENT_STEP;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_MAX_CURRENT_BASE);
- ret = regmap_write(cb->lm3533->regmap, reg, val);
+ ret = regmap_write(cb->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to set max current\n");
@@ -96,7 +96,7 @@ int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val)
int ret;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_BRIGHTNESS_BASE);
- ret = regmap_write(cb->lm3533->regmap, reg, val);
+ ret = regmap_write(cb->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to set brightness\n");
@@ -110,7 +110,7 @@ int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val)
int ret;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_BRIGHTNESS_BASE);
- ret = regmap_read(cb->lm3533->regmap, reg, val);
+ ret = regmap_read(cb->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to get brightness\n");
@@ -137,7 +137,7 @@ int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val)
return -EINVAL;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_PWM_BASE);
- ret = regmap_write(cb->lm3533->regmap, reg, val);
+ ret = regmap_write(cb->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to set PWM mask\n");
@@ -151,7 +151,7 @@ int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val)
int ret;
reg = lm3533_ctrlbank_get_reg(cb, LM3533_REG_PWM_BASE);
- ret = regmap_read(cb->lm3533->regmap, reg, val);
+ ret = regmap_read(cb->regmap, reg, val);
if (ret)
dev_err(cb->dev, "failed to get PWM mask\n");
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 03cce6aeb014..39f438114c48 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -24,10 +24,12 @@
struct lm3533_bl {
- struct lm3533 *lm3533;
+ struct regmap *regmap;
struct lm3533_ctrlbank cb;
struct backlight_device *bd;
int id;
+
+ bool have_als;
};
@@ -88,7 +90,7 @@ static ssize_t show_als_en(struct device *dev,
bool enable;
int ret;
- ret = regmap_read(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
+ ret = regmap_read(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
if (ret)
return ret;
@@ -113,7 +115,7 @@ static ssize_t store_als_en(struct device *dev,
mask = 1 << (2 * ctrlbank);
- ret = regmap_assign_bits(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ ret = regmap_assign_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
mask, enable);
if (ret)
return ret;
@@ -130,7 +132,7 @@ static ssize_t show_linear(struct device *dev,
int linear;
int ret;
- ret = regmap_read(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
+ ret = regmap_read(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
if (ret)
return ret;
@@ -158,7 +160,7 @@ static ssize_t store_linear(struct device *dev,
mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1);
- ret = regmap_assign_bits(bl->lm3533->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ ret = regmap_assign_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
mask, linear);
if (ret)
return ret;
@@ -223,7 +225,7 @@ static umode_t lm3533_bl_attr_is_visible(struct kobject *kobj,
if (attr == &dev_attr_als_channel.attr ||
attr == &dev_attr_als_en.attr) {
- if (!bl->lm3533->have_als)
+ if (!bl->have_als)
mode = 0;
}
@@ -277,10 +279,11 @@ static int lm3533_bl_probe(struct platform_device *pdev)
if (!bl)
return -ENOMEM;
- bl->lm3533 = lm3533;
+ bl->regmap = lm3533->regmap;
+ bl->have_als = lm3533->have_als;
bl->id = pdev->id;
- bl->cb.lm3533 = lm3533;
+ bl->cb.regmap = lm3533->regmap;
bl->cb.id = lm3533_bl_get_ctrlbank_id(bl);
bl->cb.dev = NULL; /* until registered */
diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
index aab8f08dfcb0..696014deaa7c 100644
--- a/include/linux/mfd/lm3533.h
+++ b/include/linux/mfd/lm3533.h
@@ -33,7 +33,7 @@ struct lm3533 {
};
struct lm3533_ctrlbank {
- struct lm3533 *lm3533;
+ struct regmap *regmap;
struct device *dev;
int id;
};
--
2.53.0
^ permalink raw reply related
* [PATCH v4 05/14] iio: light: lm3533-als: Remove redundant pdata helpers
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
The lm3533_als_set_input_mode and lm3533_als_set_resistor functions are
used only in lm3533_als_setup. Incorporate their code into
lm3533_als_setup directly to simplify driver readability.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/iio/light/lm3533-als.c | 51 +++++++++-------------------------
1 file changed, 13 insertions(+), 38 deletions(-)
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index a9af8e2b965f..c4035d1c8d57 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -708,54 +708,29 @@ static const struct attribute_group lm3533_als_attribute_group = {
.attrs = lm3533_als_attributes
};
-static int lm3533_als_set_input_mode(struct lm3533_als *als, bool pwm_mode)
-{
- int ret;
-
- ret = regmap_assign_bits(als->regmap, LM3533_REG_ALS_CONF,
- LM3533_ALS_INPUT_MODE_MASK, pwm_mode);
- if (ret) {
- dev_err(&als->pdev->dev, "failed to set input mode %d\n",
- pwm_mode);
- return ret;
- }
-
- return 0;
-}
-
-static int lm3533_als_set_resistor(struct lm3533_als *als, u8 val)
-{
- int ret;
-
- if (val < LM3533_ALS_RESISTOR_MIN || val > LM3533_ALS_RESISTOR_MAX) {
- dev_err(&als->pdev->dev, "invalid resistor value\n");
- return -EINVAL;
- }
-
- ret = regmap_write(als->regmap, LM3533_REG_ALS_RESISTOR_SELECT,
- val);
- if (ret) {
- dev_err(&als->pdev->dev, "failed to set resistor\n");
- return ret;
- }
-
- return 0;
-}
-
static int lm3533_als_setup(struct lm3533_als *als,
const struct lm3533_als_platform_data *pdata)
{
+ struct device *dev = &als->pdev->dev;
int ret;
- ret = lm3533_als_set_input_mode(als, pdata->pwm_mode);
+ ret = regmap_assign_bits(als->regmap, LM3533_REG_ALS_CONF,
+ LM3533_ALS_INPUT_MODE_MASK, pdata->pwm_mode);
if (ret)
- return ret;
+ return dev_err_probe(dev, ret, "failed to set input mode %d\n",
+ pdata->pwm_mode);
/* ALS input is always high impedance in PWM-mode. */
if (!pdata->pwm_mode) {
- ret = lm3533_als_set_resistor(als, pdata->r_select);
+ if (pdata->r_select < LM3533_ALS_RESISTOR_MIN ||
+ pdata->r_select > LM3533_ALS_RESISTOR_MAX)
+ return dev_err_probe(dev, -EINVAL,
+ "invalid resistor value\n");
+
+ ret = regmap_write(als->regmap, LM3533_REG_ALS_RESISTOR_SELECT,
+ pdata->r_select);
if (ret)
- return ret;
+ return dev_err_probe(dev, ret, "failed to set resistor\n");
}
return 0;
--
2.53.0
^ permalink raw reply related
* [PATCH v4 06/14] mfd: lm3533-core: Remove redundant pdata helpers
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
The lm3533_set_boost_freq and lm3533_set_boost_ovp functions are used only
in lm3533_device_setup, which in turn is only called by
lm3533_device_init. Incorporate their code directly into
lm3533_device_init to simplify driver readability.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/mfd/lm3533-core.c | 57 ++++++++++-----------------------------
1 file changed, 14 insertions(+), 43 deletions(-)
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index f9bdc0a1d9be..45e7f7481aa0 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -80,35 +80,6 @@ static struct mfd_cell lm3533_led_devs[] = {
},
};
-static int lm3533_set_boost_freq(struct lm3533 *lm3533,
- enum lm3533_boost_freq freq)
-{
- int ret;
-
- ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
- LM3533_BOOST_FREQ_MASK,
- freq << LM3533_BOOST_FREQ_SHIFT);
- if (ret)
- dev_err(lm3533->dev, "failed to set boost frequency\n");
-
- return ret;
-}
-
-
-static int lm3533_set_boost_ovp(struct lm3533 *lm3533,
- enum lm3533_boost_ovp ovp)
-{
- int ret;
-
- ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
- LM3533_BOOST_OVP_MASK,
- ovp << LM3533_BOOST_OVP_SHIFT);
- if (ret)
- dev_err(lm3533->dev, "failed to set boost ovp\n");
-
- return ret;
-}
-
/*
* HVLED output config -- output hvled controlled by backlight bl
*/
@@ -406,18 +377,6 @@ static int lm3533_device_led_init(struct lm3533 *lm3533)
return 0;
}
-static int lm3533_device_setup(struct lm3533 *lm3533,
- struct lm3533_platform_data *pdata)
-{
- int ret;
-
- ret = lm3533_set_boost_freq(lm3533, pdata->boost_freq);
- if (ret)
- return ret;
-
- return lm3533_set_boost_ovp(lm3533, pdata->boost_ovp);
-}
-
static int lm3533_device_init(struct lm3533 *lm3533)
{
struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev);
@@ -437,9 +396,21 @@ static int lm3533_device_init(struct lm3533 *lm3533)
lm3533_enable(lm3533);
- ret = lm3533_device_setup(lm3533, pdata);
- if (ret)
+ ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
+ LM3533_BOOST_FREQ_MASK,
+ pdata->boost_freq << LM3533_BOOST_FREQ_SHIFT);
+ if (ret) {
+ dev_err(lm3533->dev, "failed to set boost frequency\n");
goto err_disable;
+ }
+
+ ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
+ LM3533_BOOST_OVP_MASK,
+ pdata->boost_ovp << LM3533_BOOST_OVP_SHIFT);
+ if (ret) {
+ dev_err(lm3533->dev, "failed to set boost ovp\n");
+ goto err_disable;
+ }
lm3533_device_als_init(lm3533);
lm3533_device_bl_init(lm3533);
--
2.53.0
^ permalink raw reply related
* [PATCH v4 07/14] mfd: lm3533: Switch sysfs_create_group() to device_add_group()
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Switch from sysfs_create_group() to device_add_group() including device
managed where appropriate.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/mfd/lm3533-core.c | 4 ++--
drivers/video/backlight/lm3533_bl.c | 19 ++++++-------------
2 files changed, 8 insertions(+), 15 deletions(-)
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 45e7f7481aa0..e3efc9f6f348 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -416,7 +416,7 @@ static int lm3533_device_init(struct lm3533 *lm3533)
lm3533_device_bl_init(lm3533);
lm3533_device_led_init(lm3533);
- ret = sysfs_create_group(&lm3533->dev->kobj, &lm3533_attribute_group);
+ ret = device_add_group(lm3533->dev, &lm3533_attribute_group);
if (ret < 0) {
dev_err(lm3533->dev, "failed to create sysfs attributes\n");
goto err_unregister;
@@ -436,7 +436,7 @@ static void lm3533_device_exit(struct lm3533 *lm3533)
{
dev_dbg(lm3533->dev, "%s\n", __func__);
- sysfs_remove_group(&lm3533->dev->kobj, &lm3533_attribute_group);
+ device_remove_group(lm3533->dev, &lm3533_attribute_group);
mfd_remove_devices(lm3533->dev);
lm3533_disable(lm3533);
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 39f438114c48..b4363a30b2c8 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -304,28 +304,22 @@ static int lm3533_bl_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, bl);
- ret = sysfs_create_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to create sysfs attributes\n");
- return ret;
- }
+ ret = devm_device_add_group(&bd->dev, &lm3533_bl_attribute_group);
+ if (ret < 0)
+ return dev_err_probe(&pdev->dev, ret,
+ "failed to create sysfs attributes\n");
backlight_update_status(bd);
ret = lm3533_bl_setup(bl, pdata);
if (ret)
- goto err_sysfs_remove;
+ return ret;
ret = lm3533_ctrlbank_enable(&bl->cb);
if (ret)
- goto err_sysfs_remove;
+ return ret;
return 0;
-
-err_sysfs_remove:
- sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
-
- return ret;
}
static void lm3533_bl_remove(struct platform_device *pdev)
@@ -339,7 +333,6 @@ static void lm3533_bl_remove(struct platform_device *pdev)
bd->props.brightness = 0;
lm3533_ctrlbank_disable(&bl->cb);
- sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
}
#ifdef CONFIG_PM_SLEEP
--
2.53.0
^ permalink raw reply related
* [PATCH v4 08/14] mfd: lm3533: Convert to use OF bindings
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Since there are no users of this driver via platform data, remove the
platform data support and switch to using Device Tree bindings.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> #for backlight
---
drivers/iio/light/lm3533-als.c | 67 +++++---
drivers/leds/leds-lm3533.c | 51 ++++--
drivers/mfd/lm3533-core.c | 236 ++++++++++++----------------
drivers/mfd/lm3533-ctrlbank.c | 5 -
drivers/video/backlight/lm3533_bl.c | 59 ++++---
include/linux/mfd/lm3533.h | 52 +-----
6 files changed, 225 insertions(+), 245 deletions(-)
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index c4035d1c8d57..d51cf96970b9 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -16,16 +16,19 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
+#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
+#include <linux/units.h>
#include <linux/mfd/lm3533.h>
-#define LM3533_ALS_RESISTOR_MIN 1
-#define LM3533_ALS_RESISTOR_MAX 127
+#define LM3533_ALS_RESISTOR_MIN_OHMS 1575
+#define LM3533_ALS_RESISTOR_MAX_OHMS 200000
#define LM3533_ALS_CHANNEL_CURRENT_MAX 2
#define LM3533_ALS_THRESH_MAX 3
#define LM3533_ALS_ZONE_MAX 4
@@ -57,6 +60,9 @@ struct lm3533_als {
atomic_t zone;
struct mutex thresh_mutex;
+
+ u32 r_select;
+ bool pwm_mode;
};
@@ -403,7 +409,7 @@ static ssize_t show_thresh_either_en(struct device *dev,
int enable;
int ret;
- if (als->irq) {
+ if (als->irq > 0) {
ret = lm3533_als_get_int_mode(indio_dev, &enable);
if (ret)
return ret;
@@ -425,7 +431,7 @@ static ssize_t store_thresh_either_en(struct device *dev,
u8 zone;
int ret;
- if (!als->irq)
+ if (als->irq <= 0)
return -EBUSY;
if (kstrtoul(buf, 0, &enable))
@@ -708,27 +714,36 @@ static const struct attribute_group lm3533_als_attribute_group = {
.attrs = lm3533_als_attributes
};
-static int lm3533_als_setup(struct lm3533_als *als,
- const struct lm3533_als_platform_data *pdata)
+static int lm3533_als_setup(struct lm3533_als *als)
{
struct device *dev = &als->pdev->dev;
int ret;
+ als->pwm_mode = device_property_read_bool(dev, "ti,pwm-mode");
+
ret = regmap_assign_bits(als->regmap, LM3533_REG_ALS_CONF,
- LM3533_ALS_INPUT_MODE_MASK, pdata->pwm_mode);
+ LM3533_ALS_INPUT_MODE_MASK, als->pwm_mode);
if (ret)
return dev_err_probe(dev, ret, "failed to set input mode %d\n",
- pdata->pwm_mode);
+ als->pwm_mode);
/* ALS input is always high impedance in PWM-mode. */
- if (!pdata->pwm_mode) {
- if (pdata->r_select < LM3533_ALS_RESISTOR_MIN ||
- pdata->r_select > LM3533_ALS_RESISTOR_MAX)
+ if (!als->pwm_mode) {
+ ret = device_property_read_u32(dev, "ti,resistor-ohms",
+ &als->r_select);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "failed to ger resistor value\n");
+
+ if (als->r_select < LM3533_ALS_RESISTOR_MIN_OHMS ||
+ als->r_select > LM3533_ALS_RESISTOR_MAX_OHMS)
return dev_err_probe(dev, -EINVAL,
"invalid resistor value\n");
+ als->r_select = DIV_ROUND_UP(2 * MICRO, 10 * als->r_select);
+
ret = regmap_write(als->regmap, LM3533_REG_ALS_RESISTOR_SELECT,
- pdata->r_select);
+ als->r_select);
if (ret)
return dev_err_probe(dev, ret, "failed to set resistor\n");
}
@@ -792,7 +807,6 @@ static const struct iio_info lm3533_als_info = {
static int lm3533_als_probe(struct platform_device *pdev)
{
- const struct lm3533_als_platform_data *pdata;
struct lm3533 *lm3533;
struct lm3533_als *als;
struct iio_dev *indio_dev;
@@ -802,12 +816,6 @@ static int lm3533_als_probe(struct platform_device *pdev)
if (!lm3533)
return -EINVAL;
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data\n");
- return -EINVAL;
- }
-
indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*als));
if (!indio_dev)
return -ENOMEM;
@@ -816,25 +824,27 @@ static int lm3533_als_probe(struct platform_device *pdev)
indio_dev->channels = lm3533_als_channels;
indio_dev->num_channels = ARRAY_SIZE(lm3533_als_channels);
indio_dev->name = dev_name(&pdev->dev);
- iio_device_set_parent(indio_dev, pdev->dev.parent);
indio_dev->modes = INDIO_DIRECT_MODE;
als = iio_priv(indio_dev);
als->regmap = lm3533->regmap;
als->pdev = pdev;
- als->irq = lm3533->irq;
+ als->irq = platform_get_irq_optional(pdev, 0);
+ if (als->irq == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
atomic_set(&als->zone, 0);
mutex_init(&als->thresh_mutex);
platform_set_drvdata(pdev, indio_dev);
- if (als->irq) {
+ if (als->irq > 0) {
ret = lm3533_als_setup_irq(als, indio_dev);
if (ret)
return ret;
}
- ret = lm3533_als_setup(als, pdata);
+ ret = lm3533_als_setup(als);
if (ret)
goto err_free_irq;
@@ -853,7 +863,7 @@ static int lm3533_als_probe(struct platform_device *pdev)
err_disable:
lm3533_als_disable(als);
err_free_irq:
- if (als->irq)
+ if (als->irq > 0)
free_irq(als->irq, indio_dev);
return ret;
@@ -867,13 +877,20 @@ static void lm3533_als_remove(struct platform_device *pdev)
lm3533_als_set_int_mode(indio_dev, false);
iio_device_unregister(indio_dev);
lm3533_als_disable(als);
- if (als->irq)
+ if (als->irq > 0)
free_irq(als->irq, indio_dev);
}
+static const struct of_device_id lm3533_als_match_table[] = {
+ { .compatible = "ti,lm3533-als" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lm3533_als_match_table);
+
static struct platform_driver lm3533_als_driver = {
.driver = {
.name = "lm3533-als",
+ .of_match_table = lm3533_als_match_table,
},
.probe = lm3533_als_probe,
.remove = lm3533_als_remove,
diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c
index f57d97201816..a661aedcdc60 100644
--- a/drivers/leds/leds-lm3533.c
+++ b/drivers/leds/leds-lm3533.c
@@ -10,8 +10,10 @@
#include <linux/module.h>
#include <linux/leds.h>
#include <linux/mfd/core.h>
+#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@@ -50,6 +52,9 @@ struct lm3533_led {
struct mutex mutex;
unsigned long flags;
+ u32 max_current;
+ u32 pwm;
+
bool have_als;
};
@@ -616,22 +621,20 @@ static const struct attribute_group *lm3533_led_attribute_groups[] = {
NULL
};
-static int lm3533_led_setup(struct lm3533_led *led,
- struct lm3533_led_platform_data *pdata)
+static int lm3533_led_setup(struct lm3533_led *led)
{
int ret;
- ret = lm3533_ctrlbank_set_max_current(&led->cb, pdata->max_current);
+ ret = lm3533_ctrlbank_set_max_current(&led->cb, led->max_current);
if (ret)
return ret;
- return lm3533_ctrlbank_set_pwm(&led->cb, pdata->pwm);
+ return lm3533_ctrlbank_set_pwm(&led->cb, led->pwm);
}
static int lm3533_led_probe(struct platform_device *pdev)
{
struct lm3533 *lm3533;
- struct lm3533_led_platform_data *pdata;
struct lm3533_led *led;
int ret;
@@ -641,12 +644,6 @@ static int lm3533_led_probe(struct platform_device *pdev)
if (!lm3533)
return -EINVAL;
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data\n");
- return -EINVAL;
- }
-
if (pdev->id < 0 || pdev->id >= LM3533_LVCTRLBANK_COUNT) {
dev_err(&pdev->dev, "illegal LED id %d\n", pdev->id);
return -EINVAL;
@@ -659,8 +656,6 @@ static int lm3533_led_probe(struct platform_device *pdev)
led->regmap = lm3533->regmap;
led->have_als = lm3533->have_als;
- led->cdev.name = pdata->name;
- led->cdev.default_trigger = pdata->default_trigger;
led->cdev.brightness_set_blocking = lm3533_led_set;
led->cdev.brightness_get = lm3533_led_get;
led->cdev.blink_set = lm3533_led_blink_set;
@@ -668,6 +663,15 @@ static int lm3533_led_probe(struct platform_device *pdev)
led->cdev.groups = lm3533_led_attribute_groups;
led->id = pdev->id;
+ led->cdev.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s-%d",
+ pdev->name, led->id);
+ if (!led->cdev.name)
+ return -ENOMEM;
+
+ led->cdev.default_trigger = "none";
+ device_property_read_string(&pdev->dev, "linux,default-trigger",
+ &led->cdev.default_trigger);
+
mutex_init(&led->mutex);
/* The class framework makes a callback to get brightness during
@@ -680,15 +684,23 @@ static int lm3533_led_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, led);
- ret = led_classdev_register(pdev->dev.parent, &led->cdev);
+ ret = led_classdev_register(&pdev->dev, &led->cdev);
if (ret) {
- dev_err(&pdev->dev, "failed to register LED %d\n", pdev->id);
+ dev_err(&pdev->dev, "failed to register LED %d\n", led->id);
return ret;
}
led->cb.dev = led->cdev.dev;
- ret = lm3533_led_setup(led, pdata);
+ device_property_read_u32(&pdev->dev, "led-max-microamp",
+ &led->max_current);
+ led->max_current = clamp(led->max_current, LM3533_MAX_CURRENT_MIN,
+ LM3533_MAX_CURRENT_MAX);
+
+ led->pwm = 0;
+ device_property_read_u32(&pdev->dev, "ti,pwm-config-mask", &led->pwm);
+
+ ret = lm3533_led_setup(led);
if (ret)
goto err_deregister;
@@ -725,9 +737,16 @@ static void lm3533_led_shutdown(struct platform_device *pdev)
lm3533_led_set(&led->cdev, LED_OFF); /* disable blink */
}
+static const struct of_device_id lm3533_led_match_table[] = {
+ { .compatible = "ti,lm3533-leds" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lm3533_led_match_table);
+
static struct platform_driver lm3533_led_driver = {
.driver = {
.name = "lm3533-leds",
+ .of_match_table = lm3533_led_match_table,
},
.probe = lm3533_led_probe,
.remove = lm3533_led_remove,
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index e3efc9f6f348..5af1d5476d3e 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -14,19 +14,26 @@
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
+#include <linux/units.h>
#include <linux/mfd/lm3533.h>
#define LM3533_BOOST_OVP_MASK 0x06
#define LM3533_BOOST_OVP_SHIFT 1
+#define LM3533_BOOST_OVP_MIN (16 * MICRO)
+#define LM3533_BOOST_OVP_MAX (40 * MICRO)
#define LM3533_BOOST_FREQ_MASK 0x01
#define LM3533_BOOST_FREQ_SHIFT 0
+#define LM3533_BOOST_FREQ_MIN (500 * HZ_PER_KHZ)
+#define LM3533_BOOST_FREQ_MAX (1000 * HZ_PER_KHZ)
#define LM3533_BL_ID_MASK 1
#define LM3533_LED_ID_MASK 3
@@ -35,6 +42,7 @@
#define LM3533_HVLED_ID_MAX 2
#define LM3533_LVLED_ID_MAX 5
+#define LM3533_CELLS_MAX 7
#define LM3533_REG_OUTPUT_CONF1 0x10
#define LM3533_REG_OUTPUT_CONF2 0x11
@@ -42,44 +50,6 @@
#define LM3533_REG_MAX 0xb2
-
-static struct mfd_cell lm3533_als_devs[] = {
- {
- .name = "lm3533-als",
- .id = -1,
- },
-};
-
-static struct mfd_cell lm3533_bl_devs[] = {
- {
- .name = "lm3533-backlight",
- .id = 0,
- },
- {
- .name = "lm3533-backlight",
- .id = 1,
- },
-};
-
-static struct mfd_cell lm3533_led_devs[] = {
- {
- .name = "lm3533-leds",
- .id = 0,
- },
- {
- .name = "lm3533-leds",
- .id = 1,
- },
- {
- .name = "lm3533-leds",
- .id = 2,
- },
- {
- .name = "lm3533-leds",
- .id = 3,
- },
-};
-
/*
* HVLED output config -- output hvled controlled by backlight bl
*/
@@ -296,129 +266,99 @@ static struct attribute_group lm3533_attribute_group = {
.attrs = lm3533_attributes
};
-static int lm3533_device_als_init(struct lm3533 *lm3533)
-{
- struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev);
- int ret;
-
- if (!pdata->als)
- return 0;
-
- lm3533_als_devs[0].platform_data = pdata->als;
- lm3533_als_devs[0].pdata_size = sizeof(*pdata->als);
-
- ret = mfd_add_devices(lm3533->dev, 0, lm3533_als_devs, 1, NULL,
- 0, NULL);
- if (ret) {
- dev_err(lm3533->dev, "failed to add ALS device\n");
- return ret;
- }
-
- lm3533->have_als = 1;
-
- return 0;
-}
-
-static int lm3533_device_bl_init(struct lm3533 *lm3533)
-{
- struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev);
- int i;
- int ret;
-
- if (!pdata->backlights || pdata->num_backlights == 0)
- return 0;
-
- if (pdata->num_backlights > ARRAY_SIZE(lm3533_bl_devs))
- pdata->num_backlights = ARRAY_SIZE(lm3533_bl_devs);
-
- for (i = 0; i < pdata->num_backlights; ++i) {
- lm3533_bl_devs[i].platform_data = &pdata->backlights[i];
- lm3533_bl_devs[i].pdata_size = sizeof(pdata->backlights[i]);
- }
-
- ret = mfd_add_devices(lm3533->dev, 0, lm3533_bl_devs,
- pdata->num_backlights, NULL, 0, NULL);
- if (ret) {
- dev_err(lm3533->dev, "failed to add backlight devices\n");
- return ret;
- }
-
- lm3533->have_backlights = 1;
-
- return 0;
-}
-
-static int lm3533_device_led_init(struct lm3533 *lm3533)
+static int lm3533_device_init(struct lm3533 *lm3533)
{
- struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev);
- int i;
+ struct device *dev = lm3533->dev;
+ struct mfd_cell *lm3533_devices;
+ u32 count = 0, reg, nchilds;
int ret;
- if (!pdata->leds || pdata->num_leds == 0)
- return 0;
-
- if (pdata->num_leds > ARRAY_SIZE(lm3533_led_devs))
- pdata->num_leds = ARRAY_SIZE(lm3533_led_devs);
+ nchilds = device_get_child_node_count(dev);
+ if (!nchilds || nchilds > LM3533_CELLS_MAX)
+ return dev_err_probe(dev, -ENODEV,
+ "num of child nodes is not supported\n");
- for (i = 0; i < pdata->num_leds; ++i) {
- lm3533_led_devs[i].platform_data = &pdata->leds[i];
- lm3533_led_devs[i].pdata_size = sizeof(pdata->leds[i]);
- }
-
- ret = mfd_add_devices(lm3533->dev, 0, lm3533_led_devs,
- pdata->num_leds, NULL, 0, NULL);
- if (ret) {
- dev_err(lm3533->dev, "failed to add LED devices\n");
- return ret;
- }
+ lm3533_devices = devm_kcalloc(dev, nchilds, sizeof(*lm3533_devices),
+ GFP_KERNEL);
+ if (!lm3533_devices)
+ return -ENOMEM;
- lm3533->have_leds = 1;
+ device_for_each_child_node_scoped(dev, child) {
+ if (count >= nchilds)
+ break;
- return 0;
-}
+ if (fwnode_device_is_compatible(child, "ti,lm3533-als")) {
+ lm3533_devices[count].name = "lm3533-als";
+ lm3533_devices[count].of_compatible = "ti,lm3533-als";
+ lm3533_devices[count].id = PLATFORM_DEVID_NONE;
-static int lm3533_device_init(struct lm3533 *lm3533)
-{
- struct lm3533_platform_data *pdata = dev_get_platdata(lm3533->dev);
- int ret;
+ lm3533->have_als = true;
+ count++;
+ }
- dev_dbg(lm3533->dev, "%s\n", __func__);
+ if (fwnode_device_is_compatible(child, "ti,lm3533-backlight")) {
+ ret = fwnode_property_read_u32(child, "reg", ®);
+ if (ret || reg >= LM3533_HVLED_ID_MAX) {
+ dev_err(dev, "invalid backlight node %pfw\n", child);
+ continue;
+ }
+
+ lm3533_devices[count].name = "lm3533-backlight";
+ lm3533_devices[count].of_compatible = "ti,lm3533-backlight";
+ lm3533_devices[count].id = reg;
+ lm3533_devices[count].of_reg = reg;
+ lm3533_devices[count].use_of_reg = true;
+
+ lm3533->have_backlights = true;
+ count++;
+ }
- if (!pdata) {
- dev_err(lm3533->dev, "no platform data\n");
- return -EINVAL;
+ if (fwnode_device_is_compatible(child, "ti,lm3533-leds")) {
+ ret = fwnode_property_read_u32(child, "reg", ®);
+ if (ret || reg < LM3533_HVLED_ID_MAX ||
+ reg > LM3533_LVLED_ID_MAX) {
+ dev_err(dev, "invalid LED node %pfw\n", child);
+ continue;
+ }
+
+ lm3533_devices[count].name = "lm3533-leds";
+ lm3533_devices[count].of_compatible = "ti,lm3533-leds";
+ lm3533_devices[count].id = reg - LM3533_HVLED_ID_MAX;
+ lm3533_devices[count].of_reg = reg;
+ lm3533_devices[count].use_of_reg = true;
+
+ lm3533->have_leds = true;
+ count++;
+ }
}
- lm3533->hwen = devm_gpiod_get(lm3533->dev, NULL, GPIOD_OUT_LOW);
- if (IS_ERR(lm3533->hwen))
- return dev_err_probe(lm3533->dev, PTR_ERR(lm3533->hwen), "failed to request HWEN GPIO\n");
- gpiod_set_consumer_name(lm3533->hwen, "lm3533-hwen");
-
lm3533_enable(lm3533);
ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
LM3533_BOOST_FREQ_MASK,
- pdata->boost_freq << LM3533_BOOST_FREQ_SHIFT);
+ lm3533->boost_freq << LM3533_BOOST_FREQ_SHIFT);
if (ret) {
- dev_err(lm3533->dev, "failed to set boost frequency\n");
+ dev_err(dev, "failed to set boost frequency\n");
goto err_disable;
}
ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
LM3533_BOOST_OVP_MASK,
- pdata->boost_ovp << LM3533_BOOST_OVP_SHIFT);
+ lm3533->boost_ovp << LM3533_BOOST_OVP_SHIFT);
if (ret) {
- dev_err(lm3533->dev, "failed to set boost ovp\n");
+ dev_err(dev, "failed to set boost ovp\n");
goto err_disable;
}
- lm3533_device_als_init(lm3533);
- lm3533_device_bl_init(lm3533);
- lm3533_device_led_init(lm3533);
+ ret = mfd_add_devices(dev, 0, lm3533_devices, count, NULL, 0, NULL);
+ if (ret) {
+ dev_err(dev, "failed to add MFD devices: %d\n", ret);
+ goto err_disable;
+ }
- ret = device_add_group(lm3533->dev, &lm3533_attribute_group);
+ ret = device_add_group(dev, &lm3533_attribute_group);
if (ret < 0) {
- dev_err(lm3533->dev, "failed to create sysfs attributes\n");
+ dev_err(dev, "failed to create sysfs attributes\n");
goto err_unregister;
}
@@ -509,7 +449,26 @@ static int lm3533_i2c_probe(struct i2c_client *i2c)
return PTR_ERR(lm3533->regmap);
lm3533->dev = &i2c->dev;
- lm3533->irq = i2c->irq;
+
+ lm3533->hwen = devm_gpiod_get_optional(lm3533->dev, "enable",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(lm3533->hwen))
+ return dev_err_probe(lm3533->dev, PTR_ERR(lm3533->hwen),
+ "failed to get HWEN GPIO\n");
+
+ device_property_read_u32(lm3533->dev, "ti,boost-ovp-microvolt",
+ &lm3533->boost_ovp);
+
+ lm3533->boost_ovp = clamp(lm3533->boost_ovp, LM3533_BOOST_OVP_MIN,
+ LM3533_BOOST_OVP_MAX);
+ lm3533->boost_ovp = lm3533->boost_ovp / (8 * MICRO) - 2;
+
+ device_property_read_u32(lm3533->dev, "ti,boost-freq-hz",
+ &lm3533->boost_freq);
+
+ lm3533->boost_freq = clamp(lm3533->boost_freq, LM3533_BOOST_FREQ_MIN,
+ LM3533_BOOST_FREQ_MAX);
+ lm3533->boost_freq = lm3533->boost_freq / (500 * KILO) - 1;
return lm3533_device_init(lm3533);
}
@@ -523,6 +482,12 @@ static void lm3533_i2c_remove(struct i2c_client *i2c)
lm3533_device_exit(lm3533);
}
+static const struct of_device_id lm3533_match_table[] = {
+ { .compatible = "ti,lm3533" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lm3533_match_table);
+
static const struct i2c_device_id lm3533_i2c_ids[] = {
{ "lm3533" },
{ }
@@ -532,6 +497,7 @@ MODULE_DEVICE_TABLE(i2c, lm3533_i2c_ids);
static struct i2c_driver lm3533_i2c_driver = {
.driver = {
.name = "lm3533",
+ .of_match_table = lm3533_match_table,
},
.id_table = lm3533_i2c_ids,
.probe = lm3533_i2c_probe,
diff --git a/drivers/mfd/lm3533-ctrlbank.c b/drivers/mfd/lm3533-ctrlbank.c
index 07aec46e8c0a..0454b4bd2da2 100644
--- a/drivers/mfd/lm3533-ctrlbank.c
+++ b/drivers/mfd/lm3533-ctrlbank.c
@@ -13,11 +13,6 @@
#include <linux/mfd/lm3533.h>
-
-#define LM3533_MAX_CURRENT_MIN 5000
-#define LM3533_MAX_CURRENT_MAX 29800
-#define LM3533_MAX_CURRENT_STEP 800
-
#define LM3533_PWM_MAX 0x3f
#define LM3533_REG_PWM_BASE 0x14
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index b4363a30b2c8..e91c598342ad 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -9,7 +9,9 @@
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/backlight.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@@ -29,6 +31,9 @@ struct lm3533_bl {
struct backlight_device *bd;
int id;
+ u32 max_current;
+ u32 pwm;
+
bool have_als;
};
@@ -237,25 +242,25 @@ static struct attribute_group lm3533_bl_attribute_group = {
.attrs = lm3533_bl_attributes
};
-static int lm3533_bl_setup(struct lm3533_bl *bl,
- struct lm3533_bl_platform_data *pdata)
+static int lm3533_bl_setup(struct lm3533_bl *bl)
{
int ret;
- ret = lm3533_ctrlbank_set_max_current(&bl->cb, pdata->max_current);
+ ret = lm3533_ctrlbank_set_max_current(&bl->cb, bl->max_current);
if (ret)
return ret;
- return lm3533_ctrlbank_set_pwm(&bl->cb, pdata->pwm);
+ return lm3533_ctrlbank_set_pwm(&bl->cb, bl->pwm);
}
static int lm3533_bl_probe(struct platform_device *pdev)
{
struct lm3533 *lm3533;
- struct lm3533_bl_platform_data *pdata;
struct lm3533_bl *bl;
struct backlight_device *bd;
struct backlight_properties props;
+ char *name = NULL;
+ u32 default_brightness = LM3533_BL_MAX_BRIGHTNESS;
int ret;
dev_dbg(&pdev->dev, "%s\n", __func__);
@@ -264,12 +269,6 @@ static int lm3533_bl_probe(struct platform_device *pdev)
if (!lm3533)
return -EINVAL;
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data\n");
- return -EINVAL;
- }
-
if (pdev->id < 0 || pdev->id >= LM3533_HVCTRLBANK_COUNT) {
dev_err(&pdev->dev, "illegal backlight id %d\n", pdev->id);
return -EINVAL;
@@ -287,13 +286,21 @@ static int lm3533_bl_probe(struct platform_device *pdev)
bl->cb.id = lm3533_bl_get_ctrlbank_id(bl);
bl->cb.dev = NULL; /* until registered */
+ name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s-%d",
+ pdev->name, pdev->id);
+ if (!name)
+ return -ENOMEM;
+
+ device_property_read_u32(&pdev->dev, "default-brightness",
+ &default_brightness);
+
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_RAW;
props.max_brightness = LM3533_BL_MAX_BRIGHTNESS;
- props.brightness = pdata->default_brightness;
- bd = devm_backlight_device_register(&pdev->dev, pdata->name,
- pdev->dev.parent, bl, &lm3533_bl_ops,
- &props);
+ props.brightness = default_brightness;
+
+ bd = devm_backlight_device_register(&pdev->dev, name, &pdev->dev,
+ bl, &lm3533_bl_ops, &props);
if (IS_ERR(bd)) {
dev_err(&pdev->dev, "failed to register backlight device\n");
return PTR_ERR(bd);
@@ -304,6 +311,17 @@ static int lm3533_bl_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, bl);
+ device_property_read_u32(&pdev->dev, "led-max-microamp",
+ &bl->max_current);
+ bl->max_current = clamp(bl->max_current, LM3533_MAX_CURRENT_MIN,
+ LM3533_MAX_CURRENT_MAX);
+
+ device_property_read_u32(&pdev->dev, "ti,pwm-config-mask", &bl->pwm);
+
+ ret = lm3533_bl_setup(bl);
+ if (ret)
+ return ret;
+
ret = devm_device_add_group(&bd->dev, &lm3533_bl_attribute_group);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret,
@@ -311,10 +329,6 @@ static int lm3533_bl_probe(struct platform_device *pdev)
backlight_update_status(bd);
- ret = lm3533_bl_setup(bl, pdata);
- if (ret)
- return ret;
-
ret = lm3533_ctrlbank_enable(&bl->cb);
if (ret)
return ret;
@@ -366,10 +380,17 @@ static void lm3533_bl_shutdown(struct platform_device *pdev)
lm3533_ctrlbank_disable(&bl->cb);
}
+static const struct of_device_id lm3533_bl_match_table[] = {
+ { .compatible = "ti,lm3533-backlight" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lm3533_bl_match_table);
+
static struct platform_driver lm3533_bl_driver = {
.driver = {
.name = "lm3533-backlight",
.pm = &lm3533_bl_pm_ops,
+ .of_match_table = lm3533_bl_match_table,
},
.probe = lm3533_bl_probe,
.remove = lm3533_bl_remove,
diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
index 696014deaa7c..d3f7b07dbefc 100644
--- a/include/linux/mfd/lm3533.h
+++ b/include/linux/mfd/lm3533.h
@@ -15,6 +15,10 @@
#define LM3533_ATTR_RW(_name) \
DEVICE_ATTR(_name, S_IRUGO | S_IWUSR , show_##_name, store_##_name)
+#define LM3533_MAX_CURRENT_MIN 5000
+#define LM3533_MAX_CURRENT_MAX 29800
+#define LM3533_MAX_CURRENT_STEP 800
+
struct device;
struct gpio_desc;
struct regmap;
@@ -25,7 +29,9 @@ struct lm3533 {
struct regmap *regmap;
struct gpio_desc *hwen;
- int irq;
+
+ u32 boost_ovp;
+ u32 boost_freq;
unsigned have_als:1;
unsigned have_backlights:1;
@@ -38,50 +44,6 @@ struct lm3533_ctrlbank {
int id;
};
-struct lm3533_als_platform_data {
- unsigned pwm_mode:1; /* PWM input mode (default analog) */
- u8 r_select; /* 1 - 127 (ignored in PWM-mode) */
-};
-
-struct lm3533_bl_platform_data {
- char *name;
- u16 max_current; /* 5000 - 29800 uA (800 uA step) */
- u8 default_brightness; /* 0 - 255 */
- u8 pwm; /* 0 - 0x3f */
-};
-
-struct lm3533_led_platform_data {
- char *name;
- const char *default_trigger;
- u16 max_current; /* 5000 - 29800 uA (800 uA step) */
- u8 pwm; /* 0 - 0x3f */
-};
-
-enum lm3533_boost_freq {
- LM3533_BOOST_FREQ_500KHZ,
- LM3533_BOOST_FREQ_1000KHZ,
-};
-
-enum lm3533_boost_ovp {
- LM3533_BOOST_OVP_16V,
- LM3533_BOOST_OVP_24V,
- LM3533_BOOST_OVP_32V,
- LM3533_BOOST_OVP_40V,
-};
-
-struct lm3533_platform_data {
- enum lm3533_boost_ovp boost_ovp;
- enum lm3533_boost_freq boost_freq;
-
- struct lm3533_als_platform_data *als;
-
- struct lm3533_bl_platform_data *backlights;
- int num_backlights;
-
- struct lm3533_led_platform_data *leds;
- int num_leds;
-};
-
int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb);
int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb);
--
2.53.0
^ permalink raw reply related
* [PATCH v4 09/14] mfd: lm3533: Add support for VIN power supply
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Add support for 2.7V-5.5V VIN power supply.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/mfd/lm3533-core.c | 23 +++++++++++++++++++++--
include/linux/mfd/lm3533.h | 2 ++
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 5af1d5476d3e..500cec3cceba 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -17,6 +17,7 @@
#include <linux/mod_devicetable.h>
#include <linux/property.h>
#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
@@ -113,14 +114,25 @@ static int lm3533_set_lvled_config(struct lm3533 *lm3533, u8 lvled, u8 led)
return ret;
}
-static void lm3533_enable(struct lm3533 *lm3533)
+static int lm3533_enable(struct lm3533 *lm3533)
{
+ int ret;
+
+ ret = regulator_enable(lm3533->vin_supply);
+ if (ret) {
+ dev_err(lm3533->dev, "failed to enable vin power supply\n");
+ return ret;
+ }
+
gpiod_set_value(lm3533->hwen, 1);
+
+ return 0;
}
static void lm3533_disable(struct lm3533 *lm3533)
{
gpiod_set_value(lm3533->hwen, 0);
+ regulator_disable(lm3533->vin_supply);
}
enum lm3533_attribute_type {
@@ -332,7 +344,9 @@ static int lm3533_device_init(struct lm3533 *lm3533)
}
}
- lm3533_enable(lm3533);
+ ret = lm3533_enable(lm3533);
+ if (ret)
+ return ret;
ret = regmap_update_bits(lm3533->regmap, LM3533_REG_BOOST_PWM,
LM3533_BOOST_FREQ_MASK,
@@ -456,6 +470,11 @@ static int lm3533_i2c_probe(struct i2c_client *i2c)
return dev_err_probe(lm3533->dev, PTR_ERR(lm3533->hwen),
"failed to get HWEN GPIO\n");
+ lm3533->vin_supply = devm_regulator_get(lm3533->dev, "vin");
+ if (IS_ERR(lm3533->vin_supply))
+ return dev_err_probe(lm3533->dev, PTR_ERR(lm3533->vin_supply),
+ "failed to get vin-supply\n");
+
device_property_read_u32(lm3533->dev, "ti,boost-ovp-microvolt",
&lm3533->boost_ovp);
diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
index d3f7b07dbefc..3f9f4c9ef9f3 100644
--- a/include/linux/mfd/lm3533.h
+++ b/include/linux/mfd/lm3533.h
@@ -22,6 +22,7 @@
struct device;
struct gpio_desc;
struct regmap;
+struct regulator;
struct lm3533 {
struct device *dev;
@@ -29,6 +30,7 @@ struct lm3533 {
struct regmap *regmap;
struct gpio_desc *hwen;
+ struct regulator *vin_supply;
u32 boost_ovp;
u32 boost_freq;
--
2.53.0
^ permalink raw reply related
* [PATCH v4 10/14] mfd: lm3533: Set DMA mask
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Missing coherent_dma_mask assigning triggers the following warning in
dmesg:
[ 3.287872] platform lm3533-backlight.0: DMA mask not set
Since this warning might be elevated to an error in the future, set
coherent_dma_mask to zero because both the core and cells do not utilize
DMA.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/mfd/lm3533-core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 500cec3cceba..5d17da1d998b 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -489,6 +489,10 @@ static int lm3533_i2c_probe(struct i2c_client *i2c)
LM3533_BOOST_FREQ_MAX);
lm3533->boost_freq = lm3533->boost_freq / (500 * KILO) - 1;
+ /* LM3533 and child devices do not use DMA */
+ i2c->dev.coherent_dma_mask = 0;
+ i2c->dev.dma_mask = &i2c->dev.coherent_dma_mask;
+
return lm3533_device_init(lm3533);
}
--
2.53.0
^ permalink raw reply related
* [PATCH v4 11/14] video: backlight: lm3533_bl: Improve logic of sysfs functions
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Simplify the sysfs logic of properties by switching to macros and proper
regmap helpers.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
---
drivers/video/backlight/lm3533_bl.c | 58 ++++++++++-------------------
1 file changed, 20 insertions(+), 38 deletions(-)
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index e91c598342ad..9ad7ea1bbbcc 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -23,6 +23,8 @@
#define LM3533_BL_MAX_BRIGHTNESS 255
#define LM3533_REG_CTRLBANK_AB_BCONF 0x1a
+#define CTRLBANK_AB_BCONF_ALS(n) BIT(2 * (n))
+#define CTRLBANK_AB_BCONF_MODE(n) BIT(2 * (n) + 1)
struct lm3533_bl {
@@ -85,88 +87,68 @@ static ssize_t show_als_channel(struct device *dev,
return scnprintf(buf, PAGE_SIZE, "%u\n", channel);
}
-static ssize_t show_als_en(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t show_als_en(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
- u32 val;
- u8 mask;
- bool enable;
int ret;
- ret = regmap_read(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
+ ret = regmap_test_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ CTRLBANK_AB_BCONF_ALS(ctrlbank));
if (ret)
return ret;
- mask = 1 << (2 * ctrlbank);
- enable = val & mask;
-
- return scnprintf(buf, PAGE_SIZE, "%d\n", enable);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
}
-static ssize_t store_als_en(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t len)
+static ssize_t store_als_en(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
int enable;
- u8 mask;
int ret;
if (kstrtoint(buf, 0, &enable))
return -EINVAL;
- mask = 1 << (2 * ctrlbank);
-
ret = regmap_assign_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
- mask, enable);
+ CTRLBANK_AB_BCONF_ALS(ctrlbank), enable);
if (ret)
return ret;
return len;
}
-static ssize_t show_linear(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t show_linear(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
- u32 val;
- u8 mask;
- int linear;
+ int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
int ret;
- ret = regmap_read(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF, &val);
+ ret = regmap_test_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ CTRLBANK_AB_BCONF_MODE(ctrlbank));
if (ret)
return ret;
- mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1);
-
- if (val & mask)
- linear = 1;
- else
- linear = 0;
-
- return scnprintf(buf, PAGE_SIZE, "%x\n", linear);
+ return scnprintf(buf, PAGE_SIZE, "%x\n", ret);
}
-static ssize_t store_linear(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t len)
+static ssize_t store_linear(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
+ int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
unsigned long linear;
- u8 mask;
int ret;
if (kstrtoul(buf, 0, &linear))
return -EINVAL;
- mask = 1 << (2 * lm3533_bl_get_ctrlbank_id(bl) + 1);
-
ret = regmap_assign_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
- mask, linear);
+ CTRLBANK_AB_BCONF_MODE(ctrlbank), linear);
if (ret)
return ret;
--
2.53.0
^ permalink raw reply related
* [PATCH v4 12/14] video: backlight: lm3533_bl: Set initial mapping mode from DT
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Add support to obtain the initial mapping mode from DT instead of leaving
it unconfigured.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
---
drivers/video/backlight/lm3533_bl.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 9ad7ea1bbbcc..4f8cde9f290d 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -37,6 +37,7 @@ struct lm3533_bl {
u32 pwm;
bool have_als;
+ bool linear;
};
@@ -226,8 +227,14 @@ static struct attribute_group lm3533_bl_attribute_group = {
static int lm3533_bl_setup(struct lm3533_bl *bl)
{
+ int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
int ret;
+ ret = regmap_assign_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
+ CTRLBANK_AB_BCONF_MODE(ctrlbank), bl->linear);
+ if (ret)
+ return ret;
+
ret = lm3533_ctrlbank_set_max_current(&bl->cb, bl->max_current);
if (ret)
return ret;
@@ -281,6 +288,9 @@ static int lm3533_bl_probe(struct platform_device *pdev)
props.max_brightness = LM3533_BL_MAX_BRIGHTNESS;
props.brightness = default_brightness;
+ bl->linear = device_property_read_bool(&pdev->dev,
+ "ti,linear-mapping-mode");
+
bd = devm_backlight_device_register(&pdev->dev, name, &pdev->dev,
bl, &lm3533_bl_ops, &props);
if (IS_ERR(bd)) {
--
2.53.0
^ permalink raw reply related
* [PATCH v4 13/14] video: backlight: lm3533_bl: Implement backlight_scale property
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Since the device supports linear and non-linear modes, implement the
backlight_scale property to describe this state.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
---
drivers/video/backlight/lm3533_bl.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 4f8cde9f290d..2aa4b86042ff 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -142,6 +142,7 @@ static ssize_t store_linear(struct device *dev, struct device_attribute *attr,
{
struct lm3533_bl *bl = dev_get_drvdata(dev);
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
+ struct backlight_device *bd = bl->bd;
unsigned long linear;
int ret;
@@ -153,6 +154,9 @@ static ssize_t store_linear(struct device *dev, struct device_attribute *attr,
if (ret)
return ret;
+ bd->props.scale = linear ? BACKLIGHT_SCALE_LINEAR :
+ BACKLIGHT_SCALE_NON_LINEAR;
+
return len;
}
@@ -290,6 +294,8 @@ static int lm3533_bl_probe(struct platform_device *pdev)
bl->linear = device_property_read_bool(&pdev->dev,
"ti,linear-mapping-mode");
+ props.scale = bl->linear ? BACKLIGHT_SCALE_LINEAR :
+ BACKLIGHT_SCALE_NON_LINEAR;
bd = devm_backlight_device_register(&pdev->dev, name, &pdev->dev,
bl, &lm3533_bl_ops, &props);
--
2.53.0
^ permalink raw reply related
* [PATCH v4 14/14] video: leds: backlight: lm3533: Support getting LED sources from DT
From: Svyatoslav Ryhel @ 2026-06-06 4:57 UTC (permalink / raw)
To: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Svyatoslav Ryhel
Cc: Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-1-clamor95@gmail.com>
Add Control Bank to HVLED/LVLED muxing support based on the led-sources
defined in the device tree.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/leds/leds-lm3533.c | 58 ++++++++++++++++++++++++++++-
drivers/video/backlight/lm3533_bl.c | 43 ++++++++++++++++++++-
2 files changed, 99 insertions(+), 2 deletions(-)
diff --git a/drivers/leds/leds-lm3533.c b/drivers/leds/leds-lm3533.c
index a661aedcdc60..fe3e01b265e1 100644
--- a/drivers/leds/leds-lm3533.c
+++ b/drivers/leds/leds-lm3533.c
@@ -27,6 +27,11 @@
#define LM3533_ALS_CHANNEL_LV_MIN 1
#define LM3533_ALS_CHANNEL_LV_MAX 2
+#define LM3533_REG_OUTPUT_CONF1 0x10
+#define OUTPUT_CONF1_SHIFT 2
+#define OUTPUT_LVLED_MASK 0x3
+#define LM3533_REG_OUTPUT_CONF2 0x11
+#define OUTPUT_CONF2_SHIFT 6
#define LM3533_REG_CTRLBANK_BCONF_BASE 0x1b
#define LM3533_REG_PATTERN_ENABLE 0x28
#define LM3533_REG_PATTERN_LOW_TIME_BASE 0x71
@@ -55,6 +60,9 @@ struct lm3533_led {
u32 max_current;
u32 pwm;
+ int num_leds;
+ u32 leds[LM3533_LVCTRLBANK_MAX];
+
bool have_als;
};
@@ -623,7 +631,35 @@ static const struct attribute_group *lm3533_led_attribute_groups[] = {
static int lm3533_led_setup(struct lm3533_led *led)
{
- int ret;
+ u32 output_cfg_shift = 0;
+ u32 output_cfg_val = 0;
+ u32 output_cfg_mask = 0;
+ int ret, i;
+
+ if (led->num_leds) {
+ for (i = 0; i < led->num_leds; i++) {
+ if (led->leds[i] >= LM3533_LVCTRLBANK_MAX)
+ continue;
+
+ output_cfg_shift = led->leds[i] * 2;
+ output_cfg_val |= led->id << output_cfg_shift;
+ output_cfg_mask |= OUTPUT_LVLED_MASK << output_cfg_shift;
+ }
+
+ /* LVLED1, LVLED2 and LVLED3 */
+ ret = regmap_update_bits(led->regmap, LM3533_REG_OUTPUT_CONF1,
+ output_cfg_mask << OUTPUT_CONF1_SHIFT,
+ output_cfg_val << OUTPUT_CONF1_SHIFT);
+ if (ret)
+ return ret;
+
+ /* LVLED4 and LVLED5 */
+ ret = regmap_update_bits(led->regmap, LM3533_REG_OUTPUT_CONF2,
+ output_cfg_mask >> OUTPUT_CONF2_SHIFT,
+ output_cfg_val >> OUTPUT_CONF2_SHIFT);
+ if (ret)
+ return ret;
+ }
ret = lm3533_ctrlbank_set_max_current(&led->cb, led->max_current);
if (ret)
@@ -700,6 +736,26 @@ static int lm3533_led_probe(struct platform_device *pdev)
led->pwm = 0;
device_property_read_u32(&pdev->dev, "ti,pwm-config-mask", &led->pwm);
+ led->num_leds = device_property_count_u32(&pdev->dev, "led-sources");
+ if (led->num_leds > LM3533_LVCTRLBANK_MAX) {
+ dev_err(&pdev->dev, "num of LED sources exceeds max %d: %d\n",
+ LM3533_LVCTRLBANK_MAX, led->num_leds);
+ goto err_deregister;
+ }
+
+ /*
+ * If led-sources property is not set then either this Control Bank uses
+ * its default LVLED or is not linked to any LVLED at all.
+ */
+ if (led->num_leds > 0) {
+ ret = device_property_read_u32_array(&pdev->dev, "led-sources",
+ led->leds, led->num_leds);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get led-sources\n");
+ goto err_deregister;
+ }
+ }
+
ret = lm3533_led_setup(led);
if (ret)
goto err_deregister;
diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
index 2aa4b86042ff..ed358fb3c759 100644
--- a/drivers/video/backlight/lm3533_bl.c
+++ b/drivers/video/backlight/lm3533_bl.c
@@ -7,6 +7,7 @@
* Author: Johan Hovold <jhovold@gmail.com>
*/
+#include <linux/bits.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/mod_devicetable.h>
@@ -22,6 +23,7 @@
#define LM3533_HVCTRLBANK_COUNT 2
#define LM3533_BL_MAX_BRIGHTNESS 255
+#define LM3533_REG_OUTPUT_CONF1 0x10
#define LM3533_REG_CTRLBANK_AB_BCONF 0x1a
#define CTRLBANK_AB_BCONF_ALS(n) BIT(2 * (n))
#define CTRLBANK_AB_BCONF_MODE(n) BIT(2 * (n) + 1)
@@ -36,6 +38,9 @@ struct lm3533_bl {
u32 max_current;
u32 pwm;
+ int num_leds;
+ u32 led_strings[LM3533_HVCTRLBANK_COUNT];
+
bool have_als;
bool linear;
};
@@ -232,13 +237,30 @@ static struct attribute_group lm3533_bl_attribute_group = {
static int lm3533_bl_setup(struct lm3533_bl *bl)
{
int ctrlbank = lm3533_bl_get_ctrlbank_id(bl);
- int ret;
+ u32 output_cfg_val = 0;
+ u32 output_cfg_mask = 0;
+ int ret, i;
ret = regmap_assign_bits(bl->regmap, LM3533_REG_CTRLBANK_AB_BCONF,
CTRLBANK_AB_BCONF_MODE(ctrlbank), bl->linear);
if (ret)
return ret;
+ if (bl->num_leds) {
+ for (i = 0; i < bl->num_leds; i++) {
+ if (bl->led_strings[i] >= LM3533_HVCTRLBANK_COUNT)
+ continue;
+
+ output_cfg_val |= ctrlbank << bl->led_strings[i];
+ output_cfg_mask |= BIT(bl->led_strings[i]);
+ }
+
+ ret = regmap_update_bits(bl->regmap, LM3533_REG_OUTPUT_CONF1,
+ output_cfg_mask, output_cfg_val);
+ if (ret)
+ return ret;
+ }
+
ret = lm3533_ctrlbank_set_max_current(&bl->cb, bl->max_current);
if (ret)
return ret;
@@ -316,6 +338,25 @@ static int lm3533_bl_probe(struct platform_device *pdev)
device_property_read_u32(&pdev->dev, "ti,pwm-config-mask", &bl->pwm);
+ bl->num_leds = device_property_count_u32(&pdev->dev, "led-sources");
+ if (bl->num_leds > LM3533_HVCTRLBANK_COUNT)
+ return dev_err_probe(&pdev->dev, bl->num_leds,
+ "num of LED sources exceeds max %d\n",
+ LM3533_HVCTRLBANK_COUNT);
+
+ /*
+ * If led-sources property is not set then either this Control Bank uses
+ * its default HVLED or is not linked to any HVLED at all.
+ */
+ if (bl->num_leds > 0) {
+ ret = device_property_read_u32_array(&pdev->dev, "led-sources",
+ bl->led_strings,
+ bl->num_leds);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret,
+ "failed to get led-sources\n");
+ }
+
ret = lm3533_bl_setup(bl);
if (ret)
return ret;
--
2.53.0
^ permalink raw reply related
* Re: [PATCH v4 03/14] mfd: lm3533: Remove extern from shared functions in the header
From: Andy Shevchenko @ 2026-06-06 6:46 UTC (permalink / raw)
To: Svyatoslav Ryhel
Cc: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-4-clamor95@gmail.com>
On Sat, Jun 06, 2026 at 07:57:27AM +0300, Svyatoslav Ryhel wrote:
> Using 'extern' is not required, drop them.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply
* Re: [PATCH v4 02/14] mfd: lm3533: Remove driver specific regmap wrappers
From: Andy Shevchenko @ 2026-06-06 6:53 UTC (permalink / raw)
To: Svyatoslav Ryhel
Cc: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <20260606045738.21050-3-clamor95@gmail.com>
On Sat, Jun 06, 2026 at 07:57:26AM +0300, Svyatoslav Ryhel wrote:
> Remove driver-specific regmap wrappers in favor of using regmap helpers
> directly.
I like the idea of this patch. Nevertheless I have some suggestions below.
...
> {
> struct lm3533_als *als = iio_priv(indio_dev);
> u8 reg;
> - u8 val;
> + u32 val;
Strictly speaking this should be unsigned int. The regmap API use unsigned int.
...
> static int lm3533_als_set_int_mode(struct iio_dev *indio_dev, int enable)
> {
> struct lm3533_als *als = iio_priv(indio_dev);
> - u8 mask = LM3533_ALS_INT_ENABLE_MASK;
> - u8 val;
> int ret;
>
> - if (enable)
> - val = mask;
> - else
> - val = 0;
> -
> - ret = lm3533_update(als->lm3533, LM3533_REG_ALS_ZONE_INFO, val, mask);
> + ret = regmap_assign_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
> + LM3533_ALS_INT_ENABLE_MASK, enable);
In cases like this perhaps leaving mask would be fine and together with
struct regmap *map = als->lm3533->regmap;
this be nice one-liner:
ret = regmap_assign_bits(map, LM3533_REG_ALS_ZONE_INFO, mask, enable);
> if (ret) {
> dev_err(&indio_dev->dev, "failed to set int mode %d\n",
> enable);
In many cases it won't increase LoC count.
...
> extern int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
> -extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u8 *val);
> +extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val);
> extern int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
> -extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u8 *val);
> +extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val);
Now they become asymmetrical. Perhaps to replace setters, but be careful about
upper bits.
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply
* Re: [PATCH v4 02/14] mfd: lm3533: Remove driver specific regmap wrappers
From: Svyatoslav Ryhel @ 2026-06-06 7:22 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Lee Jones, Daniel Thompson, Jingoo Han, Pavel Machek, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Jonathan Cameron,
David Lechner, Nuno Sá, Andy Shevchenko, Helge Deller,
Johan Hovold, dri-devel, linux-leds, devicetree, linux-kernel,
linux-iio, linux-fbdev
In-Reply-To: <aiPDzdKuccdLIvlF@ashevche-desk.local>
сб, 6 черв. 2026 р. о 09:53 Andy Shevchenko <andriy.shevchenko@intel.com> пише:
>
> On Sat, Jun 06, 2026 at 07:57:26AM +0300, Svyatoslav Ryhel wrote:
> > Remove driver-specific regmap wrappers in favor of using regmap helpers
> > directly.
>
> I like the idea of this patch. Nevertheless I have some suggestions below.
>
> ...
>
> > {
> > struct lm3533_als *als = iio_priv(indio_dev);
> > u8 reg;
> > - u8 val;
> > + u32 val;
>
> Strictly speaking this should be unsigned int. The regmap API use unsigned int.
>
Yes, though regmap defines only 8 bit to be used so it should not matter
> ...
>
> > static int lm3533_als_set_int_mode(struct iio_dev *indio_dev, int enable)
> > {
> > struct lm3533_als *als = iio_priv(indio_dev);
> > - u8 mask = LM3533_ALS_INT_ENABLE_MASK;
> > - u8 val;
> > int ret;
> >
> > - if (enable)
> > - val = mask;
> > - else
> > - val = 0;
> > -
> > - ret = lm3533_update(als->lm3533, LM3533_REG_ALS_ZONE_INFO, val, mask);
> > + ret = regmap_assign_bits(als->lm3533->regmap, LM3533_REG_ALS_ZONE_INFO,
> > + LM3533_ALS_INT_ENABLE_MASK, enable);
>
> In cases like this perhaps leaving mask would be fine and together with
I prefer to remove intermediate variables it the helper allows to
directly pass needed value.
>
> struct regmap *map = als->lm3533->regmap;
>
next patch drops lm3533 so there will be als->regmap which IMHO is
more logical instead of passing entire lm3533 to child devices.
> this be nice one-liner:
>
> ret = regmap_assign_bits(map, LM3533_REG_ALS_ZONE_INFO, mask, enable);
>
> > if (ret) {
> > dev_err(&indio_dev->dev, "failed to set int mode %d\n",
> > enable);
>
> In many cases it won't increase LoC count.
>
> ...
>
> > extern int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
> > -extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u8 *val);
> > +extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u32 *val);
>
> > extern int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
> > -extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u8 *val);
> > +extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u32 *val);
>
> Now they become asymmetrical. Perhaps to replace setters, but be careful about
> upper bits.
>
Yes, I have same thoughts. Upper beats should be irrelevant since
regmap should use only fist 8 bits but I will be careful, thanks.
> --
> With Best Regards,
> Andy Shevchenko
>
>
^ permalink raw reply
* [PATCH next] drivers/video/fbdev/atmel_lcdfb: Use strscpy() to copy device name
From: david.laight.linux @ 2026-06-06 20:26 UTC (permalink / raw)
To: Kees Cook, linux-hardening, Arnd Bergmann, dri-devel, linux-fbdev,
linux-kernel
Cc: Alexandre Belloni, Claudiu Beznea, Helge Deller, Nicolas Ferre,
David Laight
From: David Laight <david.laight.linux@gmail.com>
Signed-off-by: David Laight <david.laight.linux@gmail.com>
---
This is one of a group of patches that remove potentially unbounded
strcpy() calls.
They are mostly replaced by strscpy() or, when strlen() has just been
called, with memcpy() (usually including the '\0').
Calls with copy string literals into arrays are left unchanged.
They are safe and easily detected as such.
The changes were made by getting the compiler to detect the calls and
then fixing the code by hand.
Note that all the changes are only compile tested.
Some Makefiles were changed to allow files to contain strcpy().
As well as 'difficult to fix' files, this included 'show' functions
as they really need to use sysfs_emit() or seq_printf().
All the patches are being sent individually to avoid very long cc lists.
Apologies for the terse commit messages and likely unexpected tags.
(There are about 100 patches in total.)
drivers/video/fbdev/atmel_lcdfb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c
index 9dfbc5310210..da3eb5f1b337 100644
--- a/drivers/video/fbdev/atmel_lcdfb.c
+++ b/drivers/video/fbdev/atmel_lcdfb.c
@@ -1062,7 +1062,7 @@ static int atmel_lcdfb_probe(struct platform_device *pdev)
info->fbops = &atmel_lcdfb_ops;
info->fix = atmel_lcdfb_fix;
- strcpy(info->fix.id, sinfo->pdev->name);
+ strscpy(info->fix.id, sinfo->pdev->name);
/* Enable LCDC Clocks */
sinfo->bus_clk = clk_get(dev, "hclk");
--
2.39.5
^ permalink raw reply related
* [PATCH next] drivers/video/fbdev/cyber2000fb: Use strscpy() to copy device name
From: david.laight.linux @ 2026-06-06 20:26 UTC (permalink / raw)
To: Kees Cook, linux-hardening, Arnd Bergmann, dri-devel, linux-fbdev,
linux-kernel
Cc: Helge Deller, Russell King, David Laight
From: David Laight <david.laight.linux@gmail.com>
Signed-off-by: David Laight <david.laight.linux@gmail.com>
---
This is one of a group of patches that remove potentially unbounded
strcpy() calls.
They are mostly replaced by strscpy() or, when strlen() has just been
called, with memcpy() (usually including the '\0').
Calls with copy string literals into arrays are left unchanged.
They are safe and easily detected as such.
The changes were made by getting the compiler to detect the calls and
then fixing the code by hand.
Note that all the changes are only compile tested.
Some Makefiles were changed to allow files to contain strcpy().
As well as 'difficult to fix' files, this included 'show' functions
as they really need to use sysfs_emit() or seq_printf().
All the patches are being sent individually to avoid very long cc lists.
Apologies for the terse commit messages and likely unexpected tags.
(There are about 100 patches in total.)
drivers/video/fbdev/cyber2000fb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/cyber2000fb.c b/drivers/video/fbdev/cyber2000fb.c
index 2d12f8e96c7e..8fb26e85270e 100644
--- a/drivers/video/fbdev/cyber2000fb.c
+++ b/drivers/video/fbdev/cyber2000fb.c
@@ -1384,7 +1384,7 @@ static struct cfb_info *cyberpro_alloc_fb_info(unsigned int id, char *name)
else
cfb->divisors[3] = 6;
- strcpy(cfb->fb.fix.id, name);
+ strscpy(cfb->fb.fix.id, name);
cfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
cfb->fb.fix.type_aux = 0;
--
2.39.5
^ permalink raw reply related
* [PATCH next] drivers/video/fbdev/riva: Use strscpy() to copy device name
From: david.laight.linux @ 2026-06-06 20:26 UTC (permalink / raw)
To: Kees Cook, linux-hardening, Arnd Bergmann, dri-devel, linux-fbdev,
linux-kernel
Cc: Antonino Daplas, Helge Deller, David Laight
From: David Laight <david.laight.linux@gmail.com>
Signed-off-by: David Laight <david.laight.linux@gmail.com>
---
This is one of a group of patches that remove potentially unbounded
strcpy() calls.
They are mostly replaced by strscpy() or, when strlen() has just been
called, with memcpy() (usually including the '\0').
Calls with copy string literals into arrays are left unchanged.
They are safe and easily detected as such.
The changes were made by getting the compiler to detect the calls and
then fixing the code by hand.
Note that all the changes are only compile tested.
Some Makefiles were changed to allow files to contain strcpy().
As well as 'difficult to fix' files, this included 'show' functions
as they really need to use sysfs_emit() or seq_printf().
All the patches are being sent individually to avoid very long cc lists.
Apologies for the terse commit messages and likely unexpected tags.
(There are about 100 patches in total.)
drivers/video/fbdev/riva/rivafb-i2c.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/riva/rivafb-i2c.c b/drivers/video/fbdev/riva/rivafb-i2c.c
index 6a183375ced1..5ee59be01850 100644
--- a/drivers/video/fbdev/riva/rivafb-i2c.c
+++ b/drivers/video/fbdev/riva/rivafb-i2c.c
@@ -91,7 +91,7 @@ static int riva_setup_i2c_bus(struct riva_i2c_chan *chan, const char *name,
{
int rc;
- strcpy(chan->adapter.name, name);
+ strscpy(chan->adapter.name, name);
chan->adapter.owner = THIS_MODULE;
chan->adapter.class = i2c_class;
chan->adapter.algo_data = &chan->algo;
--
2.39.5
^ permalink raw reply related
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