[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <CVX5ZUGU9BVE.2TA819U1AI6BZ@otso>
Date: Sun, 01 Oct 2023 16:15:50 +0200
From: "Luca Weiss" <luca.weiss@...rphone.com>
To: "Anjelique Melendez" <quic_amelende@...cinc.com>, <pavel@....cz>,
<lee@...nel.org>, <thierry.reding@...il.com>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<agross@...nel.org>, <andersson@...nel.org>
Cc: <konrad.dybcio@...aro.org>, <u.kleine-koenig@...gutronix.de>,
<quic_subbaram@...cinc.com>, <quic_gurus@...cinc.com>,
<linux-leds@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-pwm@...r.kernel.org>, <kernel@...cinc.com>
Subject: Re: [PATCH v5 0/7] Add support for LUT PPG
On Fri Sep 29, 2023 at 2:38 AM CEST, Anjelique Melendez wrote:
> In certain PMICs, LUT pattern and LPG configuration is stored in SDAM
> modules instead of LUT peripheral. This feature is called PPG.
>
> This change series adds support for PPG. Thanks!
>
> Changes since v4:
> - Patch 3/7
> - Get rid of r/w helpers
> - Use regmap_read_poll_timeout() in qcom_pbs_wait_for_ack()
> - Update error path in qcom_pbs_trigger_event()
> - Fix reverse christmas tree
> - Patch 4/7
> - Get rid of r/w helpers
> - Update variables to use "sdam" instead of "nvmem"
> - Fix comments
> - Fix reverse christmas tree
> - Update lpg_pattern_set() logic
> - Patch 5/7
> - Removed sdam_lut_base from lpg_data
> Changes since v3:
> - Patch 4/7
> - Fix function returns
> - Move register definition to top of file
> - Revert max_brightness and probe accidental changes
> - Combine init_sdam() and parse_sdam()
> - Change error prints in probe to use dev_err_probe
> - Remove ppg_en variable
> - Update when pbs triggers are set/cleared
> - Patch 6/7
> - Remove use of nvmem_count
> - Move register definition to top of file
> - Remove lpg_get_sdam_lut_idx()
> Changes since v2:
> - Patch 1/7
> - Fix dt_binding_check error
> - Rename binding file to match compatible
> - Iclude SoC specific comptaibles
> - Patch 2/7
> - Update nvmem-names list
> - Patch 3/7
> - Update EXPORT_SYMBOL to EXPORT_SYMBOL_GPL
> - Fix return/break logic in qcom_pbs_wait_for_ack()
> - Update iterators to be int
> - Add constants
> - Fix function calls in qcom_pbs_trigger_event()
> - Remove unnessary comments
> - Return -EPROBE_DEFER from get_pbs_client_device()
> Changes since v1:
> - Patch 1/7
> - Fix dt_binding_check errors
> - Update binding description
> - Path 2/7
> - Fix dt_binding_check errors
> - Update per variant constraints
> - Update nvmem description
> - Patch 3/7
> - Update get_pbs_client_device()
> - Drop use of printk
> - Remove unused function
>
> Tested-by: Luca Weiss <luca.weiss@...rphone.com> # sdm632-fairphone-fp3 (pmi632)
Hi Anjelique,
Actually I've retested this now on PMI632 (and also realized that my
previous tests weren't correct and wasn't actually using hw_pattern).
Using the following commands (after boot) I'm expecting to get a
500ms on 500ms off blinking pattern between white (255 255 255) and off
(0 0 0).
echo pattern > /sys/class/leds/rgb:status/trigger
echo -1 > /sys/class/leds/rgb:status/repeat
echo "255 255 255" > /sys/class/leds/rgb:status/multi_intensity
echo "255 500 255 0 0 500 0 0" > /sys/class/leds/rgb:status/hw_pattern
What I actually see is it blinking between cyan (0 255 255) and red (255
0 0).
At some point after playing with many patterns I got it to actually
cycle between white and off, but I couldn't reproduce this again (or I
didn't try hard enough).
But with this example it correctly blinks red on-off.
echo "255 0 0" > /sys/class/leds/rgb:status/multi_intensity
echo "255 500 255 0 0 500 0 0" > /sys/class/leds/rgb:status/hw_pattern
With "0 255 0" and "0 0 255" the other colors also work fine, it's just
the combinations that seem somewhat broken.
Regards
Luca
>
> Anjelique Melendez (7):
> dt-bindings: soc: qcom: Add qcom,pbs bindings
> dt-bindings: leds: leds-qcom-lpg: Add support for LPG PPG
> soc: qcom: add QCOM PBS driver
> leds: rgb: leds-qcom-lpg: Add support for single SDAM PPG
> leds: rgb: leds-qcom-lpg: Update PMI632 lpg_data to support PPG
> leds: rgb: leds-qcom-lpg: Include support for PPG with dedicated LUT
> SDAM
> leds: rgb: Update PM8350C lpg_data to support two-nvmem PPG Scheme
>
> .../bindings/leds/leds-qcom-lpg.yaml | 89 ++++-
> .../bindings/soc/qcom/qcom,pbs.yaml | 46 +++
> drivers/leds/rgb/leds-qcom-lpg.c | 359 ++++++++++++++++--
> drivers/soc/qcom/Kconfig | 9 +
> drivers/soc/qcom/Makefile | 1 +
> drivers/soc/qcom/qcom-pbs.c | 243 ++++++++++++
> include/linux/soc/qcom/qcom-pbs.h | 30 ++
> 7 files changed, 749 insertions(+), 28 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,pbs.yaml
> create mode 100644 drivers/soc/qcom/qcom-pbs.c
> create mode 100644 include/linux/soc/qcom/qcom-pbs.h
Powered by blists - more mailing lists