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Currently most of Qualcomm interconnect drivers use static IDs, which
poses a threat of possible conflicts with other drivers. Rework RPMh
interconnect drivers to use dynamic IDs and drop static IDs
code.
* icc-dynamic-ids
interconnect: qcom: icc-rpmh: convert link_nodes to dynamic array
interconnect: qcom: sc7280: convert to dynamic IDs
interconnect: qcom: sc8180x: convert to dynamic IDs
interconnect: qcom: sc8280xp: convert to dynamic IDs
interconnect: qcom: sdm845: convert to dynamic IDs
interconnect: qcom: sm8250: convert to dynamic IDs
interconnect: qcom: x1e80100: convert to dynamic IDs
interconnect: qcom: qcs615: convert to dynamic IDs
interconnect: qcom: qcs8300: convert to dynamic IDs
interconnect: qcom: qdu1000: convert to dynamic IDs
interconnect: qcom: sar2130p: convert to dynamic IDs
interconnect: qcom: sc7180: convert to dynamic IDs
interconnect: qcom: sdm670: convert to dynamic IDs
interconnect: qcom: sdx55: convert to dynamic IDs
interconnect: qcom: sdx65: convert to dynamic IDs
interconnect: qcom: sdx75: convert to dynamic IDs
interconnect: qcom: sm6350: convert to dynamic IDs
interconnect: qcom: sm7150: convert to dynamic IDs
interconnect: qcom: sm8150: convert to dynamic IDs
interconnect: qcom: sm8350: convert to dynamic IDs
interconnect: qcom: sm8450: convert to dynamic IDs
interconnect: qcom: sm8550: convert to dynamic IDs
interconnect: qcom: sm8650: convert to dynamic IDs
interconnect: qcom: sm8750: convert to dynamic IDs
interconnect: qcom: icc-rpmh: drop support for non-dynamic IDS
Link: https://lore.kernel.org/r/20251031-rework-icc-v3-0-0575304c9624@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Now as all RPMh interconnect drivers were converted to using the dynamic
IDs, drop support for non-dynamic ID allocation.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251031-rework-icc-v3-25-0575304c9624@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Stop using fixed and IDs and covert the platform to use dynamic IDs for
the interconnect. This gives more flexibility and also allows us to drop
the .num_links member, saving from possible errors related to it being
not set or set incorrectly.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251031-rework-icc-v3-16-0575304c9624@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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As like other SDX SoCs, SDX75 SoC's QPIC BCM resource was modeled as a
RPMh clock in clk-rpmh driver. However, for SDX75, this resource was also
described as an interconnect and BCM node mistakenly. It is incorrect to
describe the same resource in two different providers, as it will lead to
votes from clients overriding each other.
Hence, drop the QPIC interconnect and BCM nodes and let the clients use
clk-rpmh driver to vote for this resource.
Without this change, the NAND driver fails to probe on SDX75, as the
interconnect sync state disables the QPIC nodes as there were no clients
voting for this ICC resource. However, the NAND driver had already voted
for this BCM resource through the clk-rpmh driver. Since both votes come
from Linux, RPMh was unable to distinguish between these two and ends up
disabling the QPIC resource during sync state.
Cc: stable@vger.kernel.org
Fixes: 3642b4e5cbfe ("interconnect: qcom: Add SDX75 interconnect provider driver")
Signed-off-by: Raviteja Laggyshetty <quic_rlaggysh@quicinc.com>
[mani: dropped the reference to bcm_qp0, reworded description]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Tested-by: Lakshmi Sowjanya D <quic_laksd@quicinc.com> # on SDX75
Link: https://lore.kernel.org/r/20250926-sdx75-icc-v2-1-20d6820e455c@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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After commit 0edb555a65d1 ("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
platform drivers.
Convert all platform drivers below drivers/interconnect to use
.remove(), with the eventual goal to drop struct
platform_driver::remove_new(). As .remove() and .remove_new() have the
same prototypes, conversion is done by just changing the structure
member name in the driver initializer.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20241017154920.136220-2-u.kleine-koenig@baylibre.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Several drivers use qcom_icc_rpmh_remove() as remove callback which
returns zero unconditionally. Make it return void and use .remove_new in
the drivers. There is no change in behaviour.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231015135955.1537751-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Add driver for the Qualcomm interconnect buses found in SDX75.
Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/1694614256-24109-3-git-send-email-quic_rohiagar@quicinc.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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