clk: qcom: branch: Add a helper for setting the enable bit

We hardcode some clocks to be always-on, as they're essential to the
functioning of the SoC / some peripherals. Add a helper to do so
to make the writes less magic.

Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240212-topic-clk_branch_en-v7-1-5b79eb7278b2@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

clk: qcom: branch: Add mem ops support for branch2 clocks

Add the support for mem ops implementation to handle the sequence of
enable/disable of the memories in ethernet PHY, prior to enable/disable
of the respective clocks, which helps retain the respecive block's
register contents.

Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
Signed-off-by: Imran Shaik <quic_imrashai@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231123064735.2979802-3-quic_imrashai@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

clk: qcom: branch: Clean up branch enable registers

Prefix the "branch enable" registers with CBCR_ to be closer to what
they are actually called in Qualcomm terms, use GENMASK instead of
shifting values around and adjust their usage accordingly.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230208091340.124641-5-konrad.dybcio@linaro.org

clk: qcom: branch: Move CBCR bits definitions to the header file

Move the definitions of CBCR bits to the branch header file.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230208091340.124641-4-konrad.dybcio@linaro.org

clk: qcom: branch: Add helper functions for setting SLEEP/WAKE bits

HLOS-controlled branch clocks on non-ancient Qualcomm platforms
feature SLEEP and WAKE fields which can be written to to configure
how long the clock hardware should wait internally before being
(un)gated. Some very sensitive clocks need to have these values
programmed to prevent putting the hardware in a not-exactly-good
state. Add definitions of these fields and introduce helpers for
setting them inside clock drivers.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230208091340.124641-3-konrad.dybcio@linaro.org

clk: qcom: branch: Add helper functions for setting retain bits

Most Qualcomm branch clocks come with a pretty usual set of bits that
can enable memory retention by means of not turning off parts of the
memory logic. Add them to the common header file and introduce helper
functions for setting them instead of using magic writes.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230208091340.124641-2-konrad.dybcio@linaro.org

clk: qcom: branch: Add AON clock ops

Some clocks can only be turned on by resetting the block containing
them, provide a clock type that allow us to reference these clocks and
have the client drivers enable and "disable" them.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

clk: qcom: Update SPDX headers for common files

SPDX headers updated for common/branch/pll/regmap files.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

clk: qcom: Add support for BRANCH_HALT_SKIP flag for branch clocks

There could be few clocks where the clock status bit is not
required to be polled as the clock on/off would be controlled
by enabling/disabling external source. Add support for the
same by introducing new flag named as 'BRANCH_HALT_SKIP'.

Signed-off-by: Amit Nischal <anischal@codeaurora.org>
[sboyd@kernel.org: Rename flag to BRANCH_HALT_SKIP]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

clk: qcom: Add support for branches/gate clocks

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>