[PATCH v6 00/17] media: qcom: camss: Add parameter passing to remove several outstanding bugs
From: Bryan O'Donoghue
Date: Mon Sep 25 2023 - 11:41:11 EST
V6:
- Adds Laurent's suggested comment verbatim to vfe_get() patch
- Adds Laurent's RB
- Extends array per Hans' found -Wformat-truncation
- Rewords the CID comment to make it a bit clearer
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/tree/media-stage-25-10-23-lenovo-x13s-v6.5-rc7-x13s-camss-patches-v6
git remote add bod https://git.codelinaro.org/bryan.odonoghue/kernel.git
git fetch bod
git diff bod/linux-next-23-09-06-lenovo-x13s-v6.5-rc7-x13s-camss-patches-v5..bod/media-stage-25-10-23-lenovo-x13s-v6.5-rc7-x13s-camss-patches-v6 drivers/media/platform/qcom/camss
git diff
V5:
- drops ret = fn(); return ret; for return fn(); - Hans, Konrad
Link: https://lore.kernel.org/linux-arm-msm/20230907164410.36651-16-bryan.odonoghue@xxxxxxxxxx/
Bootable:
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/tree/linux-next-23-09-06-lenovo-x13s-v6.5-rc7-x13s-camss-patches-v5
V4:
- Adds additional Reviewed-by / Acked-by from Laurent and Konrad as indicated
- Updates commit log per Laurent suggestion not go on hunger strike
Link: https://lore.kernel.org/linux-arm-msm/20230828185110.GN14596@xxxxxxxxxxxxxxxxxxxxxxxxxx/
- Includes suggested changes to switch {} statements - Laurent
Link: https://lore.kernel.org/linux-media/d7745ece-bea1-f8f9-a1d2-0f01aa221ade@xxxxxxxxxx/
- Drops SoC specific vfe_get()/vfe_put() we have been using.
There is no need to differentiate on SoC since get/put reference count.
Link: https://lore.kernel.org/linux-media/62f78aac-c1e4-018c-93c2-4dac1ec7c688@xxxxxxxxxx/
- Changes the name of the generic struct resources to struct camss_subdev_resources - Laurent
Link: https://lore.kernel.org/lkml/20230828173055.GF14596@xxxxxxxxxxxxxxxxxxxxxxxxxx/
- media: qcom: camss: media: qcom: camss: Move vfe_disable into a common routine where applicable
Follows up on a comment from Laurent
Link: https://lore.kernel.org/linux-media/20230828171725.GZ14596@xxxxxxxxxxxxxxxxxxxxxxxxxx/
- media: qcom: camss: Propagate vfe_reset error up the callstack
Take the different approach to fixing the vfe_disable() routine doing nothing but returning 0
Per Konrad's correct comment on vfe_reset() error
Link: https://lore.kernel.org/linux-media/aaf9db49-54c4-4c27-8206-61e86ad560c2@xxxxxxxxxx/
- Restricts the length of buffer size for clock name string lookups - Konrad
Link: https://lore.kernel.org/linux-arm-msm/076d958f-2cf3-4a52-99a2-52a6cdd5443c@xxxxxxxxxx/
- Some outstanding issues not addressed in this series
* Clock name string lookups.
This warrants a standalone series - which will need yaml and dts changes to group clocks
by name across all supported SoCs.
This will then negate the string matching for clocks.
Link: https://lore.kernel.org/linux-arm-msm/3b3682be-5dbd-5e2d-a6c1-7bdf6d3ff8cd@xxxxxxxxxx/
* Pixel formats are assigned via control strucutres not pointers from compat params
The struct resources stuff is still sub-optimal and it feels to me as if we should
do a bigger intervention to break away from a generic structure to subdevice specific
parameter structures. Such a subdevice specific structure would support passing pxiel
formats.
* We still need to follow up on having named genpds instead of magic indexes
Link: https://lore.kernel.org/lkml/b7e1d035-ee79-77c9-e81f-56fa8c2cf1df@xxxxxxxxxx/
* More generally this driver allows for arbitrary connection of CSID, RDI
and VFE but, that is not how the hardware works. I believe other people
have works in progress to address some of this shortcoming separately.
Bootable - includes tag for patches queued in Hans staging tree
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/commits/22ed4a935d6d323e71b014a69bafd638ad53cb5c
V3:
- Adds RB/AB as indicated - Konrad
- Replaces >= SDM845 with helper function per discussion - bod/Konrad
- Leaves out constraining VFE clock names sizes. A full pass for resource strings will happen later. - bod
- Clarifies commit log resulting in updated patch title also
"Add support for setting CSIPHY clock name csiphyX"
->
"Fix support for setting CSIPHY clock name csiphyX"
- Adds patch to remove dead integer return type in vfe_disable()
- Adds patch to comment CSID dt_id meanining which I personally find non-obvious right now - bod
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/commits/09e7805a733b488c5dc19b301eb3b77cb0fad3d6
V2:
- Replaces &camss->res with pointer to res - Konrad
- Squashes patch for NULL removal - Konrad
- Left suggestion on ICC initialisation points alone, doesn't seem to fit Konrad/bod
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/tree/linux-next-23-08-07-db410c-rb3-camss-dts-v3+maintenance-bugfixes-v2
V1:
- I forgot to include patch # 14 in V0 of this series.
This patch leverages previous changes to unwind the fixed polling of
RDI[0..2] allowing driver data to articulate on a per-VFE basis how many
RDIs to poll.
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/tree/linux-next-23-08-07-db410c-rb3-camss-dts-v3+maintenance-bugfixes-v1
V0:
This second series of bugfixes stacks ontop of the Fixes series sent earlier.
Link: https://lore.kernel.org/linux-arm-msm/20230814141007.3721197-1-bryan.odonoghue@xxxxxxxxxx/T/#t
Rather than send both series as one giant series, I opted to send a pure
Fixes series above, with this second series a non-backport series i.e. no
Fixes tags in this series.
The existing CAMSS code relies on some hard-coded parameters buried inside
of the driver, instead of passed via compat .data as arguably ought to be
the case.
This brittle model is an extending morass of spaghetti code. More than that
in CAMSS Video Front Ends (VFEs) and the number of Raw Data Interfaces
(RDIs) per VFE can vary from SoC to SoC. Indeed sm8250 has VFE and VFE Lite
blocks which have a different number of RDIs per block.
The use of defines as opposed to per-compat parameters inside of ISRs leads
to either under-polling or over-polling the number of RDIs.
On top of all of that we have some hard-coded statements for clock names
which breaks easily.
We can solve the under/over polling loop problem by transitioning loop
controls from macros to parameters passed via probe().
Similarly and unsurprisingly we can also solve the hard-coded clock problem
by adding some string processing routines that take passed arguments.
There is still some additional maintenance work to be done in this driver
but before adding one more SoC the code needs to be made more extensible
and less brittle.
Link: https://git.codelinaro.org/bryan.odonoghue/kernel/-/commits/dc346c7f46c0680bcfb84fded6db97497fffe49a
Bryan O'Donoghue (17):
media: qcom: camss: Amalgamate struct resource with struct
resource_ispif
media: qcom: camss: Rename camss struct resources to
camss_subdev_resources
media: qcom: camss: Start to move to module compat matched resources
media: qcom: camss: Pass icc bandwidth table as a platform parameter
media: qcom: camss: Pass remainder of variables as resources
media: qcom: camss: Pass line_num from compat resources
media: qcom: camss: Pass CAMSS subdev callbacks via resource ops
pointer
media: qcom: camss: Assign the correct number of RDIs per VFE
media: qcom: camss: Remove special case for VFE get/put
media: qcom: camss: Untangle if/else spaghetti in camss
media: qcom: camss: Allow clocks vfeN vfe_liteN or vfe_lite
media: qcom: camss: Functionally decompose CSIPHY clock lookups
media: qcom: camss: Fix support for setting CSIPHY clock name csiphyX
media: qcom: camss: Support RDI3 for VFE 17x
media: qcom: camss: Move vfe_disable into a common routine where
applicable
media: qcom: camss: Propagate vfe_reset error up the callstack
media: qcom: camss: Comment CSID dt_id field
.../platform/qcom/camss/camss-csid-gen2.c | 12 +
.../media/platform/qcom/camss/camss-csid.c | 33 +-
.../media/platform/qcom/camss/camss-csid.h | 4 +-
.../qcom/camss/camss-csiphy-3ph-1-0.c | 8 +-
.../media/platform/qcom/camss/camss-csiphy.c | 67 +--
.../media/platform/qcom/camss/camss-csiphy.h | 4 +-
.../media/platform/qcom/camss/camss-ispif.c | 32 +-
.../media/platform/qcom/camss/camss-ispif.h | 4 +-
.../media/platform/qcom/camss/camss-vfe-170.c | 57 +--
.../media/platform/qcom/camss/camss-vfe-4-1.c | 2 -
.../media/platform/qcom/camss/camss-vfe-4-7.c | 2 -
.../media/platform/qcom/camss/camss-vfe-4-8.c | 2 -
.../media/platform/qcom/camss/camss-vfe-480.c | 45 +-
drivers/media/platform/qcom/camss/camss-vfe.c | 127 ++++--
drivers/media/platform/qcom/camss/camss-vfe.h | 15 +-
.../media/platform/qcom/camss/camss-video.c | 17 +-
drivers/media/platform/qcom/camss/camss.c | 429 ++++++++++--------
drivers/media/platform/qcom/camss/camss.h | 34 +-
18 files changed, 462 insertions(+), 432 deletions(-)
--
2.42.0