From: Cristian Marussi <cristian.marussi@arm.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, quic_nkela@quicinc.com, souvik.chakravarty@arm.com, mturquette@baylibre.com, sboyd@kernel.org, Cristian Marussi <cristian.marussi@arm.com> Subject: [PATCH v3 4/5] clk: scmi: Add support for re-parenting restricted clocks Date: Mon, 15 Apr 2024 17:36:48 +0100 [thread overview] Message-ID: <20240415163649.895268-5-cristian.marussi@arm.com> (raw) In-Reply-To: <20240415163649.895268-1-cristian.marussi@arm.com> Some exposed SCMI Clocks could be marked as non-supporting re-parenting changes. Configure a clk_ops descriptor which does not provide the re-parenting callbacks for such clocks when registering with CLK framework. CC: Michael Turquette <mturquette@baylibre.com> CC: Stephen Boyd <sboyd@kernel.org> CC: linux-clk@vger.kernel.org Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- v2 --> v3 - using SCMI_CLK_PARENT_CTRL_SUPPORTED instead of _FORBIDDEN --- drivers/clk/clk-scmi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index ba234b56f742..ce0f26ee632f 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -21,6 +21,7 @@ enum scmi_clk_feats { SCMI_CLK_ATOMIC_SUPPORTED, SCMI_CLK_STATE_CTRL_SUPPORTED, SCMI_CLK_RATE_CTRL_SUPPORTED, + SCMI_CLK_PARENT_CTRL_SUPPORTED, SCMI_CLK_FEATS_COUNT }; @@ -254,7 +255,8 @@ scmi_clk_ops_alloc(struct device *dev, unsigned long feats_key) /* Parent ops */ ops->get_parent = scmi_clk_get_parent; - ops->set_parent = scmi_clk_set_parent; + if (feats_key & BIT(SCMI_CLK_PARENT_CTRL_SUPPORTED)) + ops->set_parent = scmi_clk_set_parent; return ops; } @@ -307,6 +309,9 @@ scmi_clk_ops_select(struct scmi_clk *sclk, bool atomic_capable, if (!ci->rate_ctrl_forbidden) feats_key |= BIT(SCMI_CLK_RATE_CTRL_SUPPORTED); + if (!ci->parent_ctrl_forbidden) + feats_key |= BIT(SCMI_CLK_PARENT_CTRL_SUPPORTED); + if (WARN_ON(feats_key >= db_size)) return NULL; -- 2.44.0
WARNING: multiple messages have this Message-ID (diff)
From: Cristian Marussi <cristian.marussi@arm.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, quic_nkela@quicinc.com, souvik.chakravarty@arm.com, mturquette@baylibre.com, sboyd@kernel.org, Cristian Marussi <cristian.marussi@arm.com> Subject: [PATCH v3 4/5] clk: scmi: Add support for re-parenting restricted clocks Date: Mon, 15 Apr 2024 17:36:48 +0100 [thread overview] Message-ID: <20240415163649.895268-5-cristian.marussi@arm.com> (raw) In-Reply-To: <20240415163649.895268-1-cristian.marussi@arm.com> Some exposed SCMI Clocks could be marked as non-supporting re-parenting changes. Configure a clk_ops descriptor which does not provide the re-parenting callbacks for such clocks when registering with CLK framework. CC: Michael Turquette <mturquette@baylibre.com> CC: Stephen Boyd <sboyd@kernel.org> CC: linux-clk@vger.kernel.org Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- v2 --> v3 - using SCMI_CLK_PARENT_CTRL_SUPPORTED instead of _FORBIDDEN --- drivers/clk/clk-scmi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index ba234b56f742..ce0f26ee632f 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -21,6 +21,7 @@ enum scmi_clk_feats { SCMI_CLK_ATOMIC_SUPPORTED, SCMI_CLK_STATE_CTRL_SUPPORTED, SCMI_CLK_RATE_CTRL_SUPPORTED, + SCMI_CLK_PARENT_CTRL_SUPPORTED, SCMI_CLK_FEATS_COUNT }; @@ -254,7 +255,8 @@ scmi_clk_ops_alloc(struct device *dev, unsigned long feats_key) /* Parent ops */ ops->get_parent = scmi_clk_get_parent; - ops->set_parent = scmi_clk_set_parent; + if (feats_key & BIT(SCMI_CLK_PARENT_CTRL_SUPPORTED)) + ops->set_parent = scmi_clk_set_parent; return ops; } @@ -307,6 +309,9 @@ scmi_clk_ops_select(struct scmi_clk *sclk, bool atomic_capable, if (!ci->rate_ctrl_forbidden) feats_key |= BIT(SCMI_CLK_RATE_CTRL_SUPPORTED); + if (!ci->parent_ctrl_forbidden) + feats_key |= BIT(SCMI_CLK_PARENT_CTRL_SUPPORTED); + if (WARN_ON(feats_key >= db_size)) return NULL; -- 2.44.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-04-15 16:37 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-15 16:36 [PATCH v3 0/5] Rework SCMI Clock driver clk_ops setup procedure Cristian Marussi 2024-04-15 16:36 ` Cristian Marussi 2024-04-15 16:36 ` [PATCH v3 1/5] clk: scmi: Allocate CLK operations dynamically Cristian Marussi 2024-04-15 16:36 ` Cristian Marussi 2024-04-22 19:04 ` Stephen Boyd 2024-04-22 19:04 ` Stephen Boyd 2024-04-15 16:36 ` [PATCH v3 2/5] clk: scmi: Add support for state control restricted clocks Cristian Marussi 2024-04-15 16:36 ` Cristian Marussi 2024-04-22 19:04 ` Stephen Boyd 2024-04-22 19:04 ` Stephen Boyd 2024-04-15 16:36 ` [PATCH v3 3/5] clk: scmi: Add support for rate change " Cristian Marussi 2024-04-15 16:36 ` Cristian Marussi 2024-04-22 19:04 ` Stephen Boyd 2024-04-22 19:04 ` Stephen Boyd 2024-04-15 16:36 ` Cristian Marussi [this message] 2024-04-15 16:36 ` [PATCH v3 4/5] clk: scmi: Add support for re-parenting " Cristian Marussi 2024-04-22 19:04 ` Stephen Boyd 2024-04-22 19:04 ` Stephen Boyd 2024-04-15 16:36 ` [PATCH v3 5/5] clk: scmi: Add support for get/set duty_cycle operations Cristian Marussi 2024-04-15 16:36 ` Cristian Marussi 2024-04-22 19:03 ` Stephen Boyd 2024-04-22 19:03 ` Stephen Boyd 2024-04-20 2:08 ` [PATCH v3 0/5] Rework SCMI Clock driver clk_ops setup procedure Stephen Boyd 2024-04-20 2:08 ` Stephen Boyd 2024-04-21 9:31 ` Cristian Marussi 2024-04-21 9:31 ` Cristian Marussi 2024-04-22 8:06 ` Sudeep Holla 2024-04-22 8:06 ` Sudeep Holla 2024-04-22 19:00 ` Stephen Boyd 2024-04-22 19:00 ` Stephen Boyd
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