Kind ping on the series.
When the series is considered solid, it will improve Linux usability on
lower-quality touchscreen replacements (including those from other
vendors and models) outside of our Snapdragon 845 downstream fork.
Thank you
David
On 10/04/2025 16:28, David Heidelberg via B4
t, so these fallback values are offered as an alternative to the error
path when register descriptors aren't available.
Signed-off-by: Kaustabh Chakraborty
[changes for readability / codeflow, checkpatch fixes]
Signed-off-by: Caleb Connolly
Signed-off-by: David Heidelberg
---
drivers/
us 6T (original parts):
manufacturer: Synaptics, product: S3706B, fw id: 2852315
Co-developed-by: Kaustabh Chakraborty
Signed-off-by: Kaustabh Chakraborty
Signed-off-by: Caleb Connolly
Co-developed-by: David Heidelberg
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c
IC)
rmi4_i2c 12-0020: read 6 bytes at 0x00e3: 0 (2c 23 0d 06 00 00)
Signed-off-by: Kaustabh Chakraborty
[codeflow adjustments, checkpatch fixes, wording]
Signed-off-by: Caleb Connolly
Co-developed-by: David Heidelberg
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c | 62
nolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_f55.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/input/rmi4/rmi_f55.c b/drivers/input/rmi4/rmi_f55.c
index
488adaca4dd00482cd1106d813b32871092c83a0..776c915b82e72b8a6eb5ec701cce9059c87089c4
100644
--- a/drivers/
From: David Heidelberg
Mostly irrelevant for authentic Synaptics touchscreens, but very important
for applying workarounds to cheap TS knockoffs.
These knockoffs work well with the downstream driver, and since the user
has no way to distinguish them, later in this patch set, we introduce
unaligned address.
Signed-off-by: Kaustabh Chakraborty
Signed-off-by: Caleb Connolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c | 20 +---
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4
Connolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_f01.c | 14 ++
1 file changed, 14 insertions(+)
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index
47be64284b25ede8103ada86d6b58fd3a26976bb..2278e9b6a920774b07ec9dd3e452cedc69469be8
100644
- Link to v1:
https://lore.kernel.org/r/20230929-caleb-rmi4-quirks-v1-0-cc3c703f0...@linaro.org
---
Caleb Connolly (1):
Input: synaptics-rmi4 - handle duplicate/unknown PDT entries
David Heidelberg (1):
dt-bindings: input: syna,rmi4: Document syna,rmi4-s3706b
Kaustabh Chakraborty (5)
From: David Heidelberg
Mostly irrelevant for authentic Synaptics touchscreens, but very important
for applying workarounds to cheap TS knockoffs.
These knockoffs work well with the downstream driver, and since the user
has no way to distinguish them, later in this patch set, we introduce
nolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_f55.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/input/rmi4/rmi_f55.c b/drivers/input/rmi4/rmi_f55.c
index
488adaca4dd00482cd1106d813b32871092c83a0..776c915b82e72b8a6eb5ec701cce9059c87089c4
100644
--- a/drivers/
...@linaro.org
Changes in v2:
- Improve dt-bindings patch (thanks Rob)
- Add missing cast in patch 5 to fix the pointer arithmetic
- Link to v1:
https://lore.kernel.org/r/20230929-caleb-rmi4-quirks-v1-0-cc3c703f0...@linaro.org
---
Caleb Connolly (1):
Input: synaptics-rmi4 - handle duplicate/
t, so these fallback values are offered as an alternative to the error
path when register descriptors aren't available.
Signed-off-by: Kaustabh Chakraborty
[changes for readability / codeflow, checkpatch fixes]
Signed-off-by: Caleb Connolly
Signed-off-by: David Heidelberg
---
drivers/
IC)
rmi4_i2c 12-0020: read 6 bytes at 0x00e3: 0 (2c 23 0d 06 00 00)
Signed-off-by: Kaustabh Chakraborty
[codeflow adjustments, checkpatch fixes, wording]
Signed-off-by: Caleb Connolly
Co-developed-by: David Heidelberg
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c | 62
On 10/03/2025 20:10, Dmitry Torokhov wrote:
Hi David,
On Sat, Mar 08, 2025 at 03:08:38PM +0100, David Heidelberg via B4 Relay wrote:
From: Caleb Connolly
Some third party rmi4-compatible ICs don't expose their PDT entries
very well. Add a few checks to skip duplicate entries as we
unaligned address.
Signed-off-by: Kaustabh Chakraborty
Signed-off-by: Caleb Connolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c | 20 +---
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4
Connolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_f01.c | 14 ++
1 file changed, 14 insertions(+)
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index
47be64284b25ede8103ada86d6b58fd3a26976bb..2278e9b6a920774b07ec9dd3e452cedc69469be8
100644
us 6T (original parts):
manufacturer: Synaptics, product: S3706B, fw id: 2852315
Co-developed-by: Kaustabh Chakraborty
Signed-off-by: Kaustabh Chakraborty
Signed-off-by: Caleb Connolly
Co-developed-by: David Heidelberg
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c
On 26/03/2025 11:26, Caleb Connolly wrote:
On 3/26/25 07:57, Krzysztof Kozlowski wrote:
On 25/03/2025 14:23, Caleb Connolly wrote:
On 3/25/25 08:36, Krzysztof Kozlowski wrote:
On 24/03/2025 19:00, David Heidelberg wrote:
On 10/03/2025 10:45, Krzysztof Kozlowski wrote:
On Sat, Mar 08
On 10/03/2025 10:45, Krzysztof Kozlowski wrote:
On Sat, Mar 08, 2025 at 03:08:37PM +0100, David Heidelberg wrote:
From: Caleb Connolly
This new property allows devices to specify some register values which
are missing on units with third party replacement displays. These
displays use
erstand it's an old series but I don't think that
courtesy is too much to ask.
On 3/8/25 14:08, David Heidelberg via B4 Relay wrote:
With the growing popularity of running upstream Linux on mobile devices,
we're beginning to run into more and more edgecases. The OnePlus 6 is a
From: methanal
Some replacement displays include third-party touch ICs which do not
report the product ID correctly unless we read directly from the
product ID register. Add a check and a fallback read to handle this.
Signed-off-by: methanal
Signed-off-by: Caleb Connolly
---
drivers/input/rmi
From: methanal
Some replacement displays include third-party touch ICs which are
devoid of register descriptors. Create a fake data register descriptor
for such ICs and provide hardcoded default values.
It isn't possible to reliably determine if the touch IC is original or
not, so these fallback
From: methanal
Some replacement displays include third-party touch ICs which incur a
significant penalty (1-2 seconds) when doing certain unaligned reads.
This is enough to break functionality when it happens in the hot path,
so adjust the interrupt handler to not read from an unaligned address.
fixes, wording]
Signed-off-by: Caleb Connolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c | 73 -
drivers/input/rmi4/rmi_driver.h | 2 ++
include/linux/rmi.h | 3 ++
3 files changed, 70 insertions(+), 8 deletions
From: methanal
Some third party ICs claim to support f55 but report an electrode count
of 0. Catch this and bail out early so that we don't confuse the i2c bus
with 0 sized reads.
Signed-off-by: methanal
[simplify code, adjust wording]
Signed-off-by: Caleb Connolly
---
drivers/input/rmi4/rmi_
| 3 +
7 files changed, 258 insertions(+), 47 deletions(-)
---
base-commit: 0a2f889128969dab41861b6e40111aa03dc57014
change-id: 20250308-synaptics-rmi4-c832b2f73ceb
Best regards,
--
David Heidelberg
us 6T (original parts):
manufacturer: Synaptics, product: S3706B, fw id: 2852315
Co-developed-by: methanal
Signed-off-by: methanal
Signed-off-by: Caleb Connolly
Signed-off-by: David Heidelberg
---
drivers/input/rmi4/rmi_driver.c | 47 +++--
drivers/input
: David Heidelberg
---
Documentation/devicetree/bindings/input/syna,rmi4.yaml | 18 ++
1 file changed, 18 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/syna,rmi4.yaml
b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
index
Hello,
is there chance to get this patch included or could be this issue
solved with different approach?
Actually this patch solve issue on two APQ8064 devices:
* Nexus 7 2013
Tested-by: David Heidelberg
* Nexus 4
Tested-by: Iskren Chernev
Best regards
David Heidelberg
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