| Message ID | 20230526-topic-smd_icc-v5-8-eeaa09d0082e@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [v5,01/22] dt-bindings: interconnect: Add Qcom RPM ICC bindings | expand |
On Wed, Jun 14, 2023 at 12:22:19PM +0200, Konrad Dybcio wrote: > Introduce qcom_icc_rpm_set_bus_rate() in preparation for handling RPM > clock resources within the interconnect framework. This lets us greatly > simplify all of the code handling, as setting the rate comes down to: > > u32 rate_khz = max(clk.sleep_rate, clk.active_rate, clk_a.active_rate) > write_to_rpm(clock.description, rate_khz); > > Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> > --- > drivers/interconnect/qcom/icc-rpm.h | 15 +++++++++++++++ > drivers/interconnect/qcom/smd-rpm.c | 21 +++++++++++++++++++++ > 2 files changed, 36 insertions(+) > > diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h > index 9ec90e13bfbd..d857fb1efb75 100644 > --- a/drivers/interconnect/qcom/icc-rpm.h > +++ b/drivers/interconnect/qcom/icc-rpm.h > @@ -22,6 +22,18 @@ enum qcom_icc_type { > QCOM_ICC_QNOC, > }; > > +/** > + * struct rpm_clk_resource - RPM bus clock resource > + * @resource_type: RPM resource type of the clock resource > + * @clock_id: index of the clock resource of a specific resource type > + * @branch: whether the resource represents a branch clock > +*/ > +struct rpm_clk_resource { > + u32 resource_type; > + u32 clock_id; > + bool branch; > +}; > + > #define NUM_BUS_CLKS 2 > > /** > @@ -47,6 +59,7 @@ struct qcom_icc_provider { > unsigned int qos_offset; > u64 bus_clk_rate[NUM_BUS_CLKS]; > struct clk_bulk_data bus_clks[NUM_BUS_CLKS]; > + const struct rpm_clk_resource *bus_clk_desc; > struct clk_bulk_data *intf_clks; > bool keep_alive; > bool is_on; > @@ -104,6 +117,7 @@ struct qcom_icc_desc { > struct qcom_icc_node * const *nodes; > size_t num_nodes; > const char * const *bus_clocks; > + const struct rpm_clk_resource *bus_clk_desc; > const char * const *intf_clocks; > size_t num_intf_clocks; > bool keep_alive; > @@ -125,5 +139,6 @@ int qnoc_remove(struct platform_device *pdev); > > bool qcom_icc_rpm_smd_available(void); > int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val); > +int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int rsc_type, u32 rate); > > #endif > diff --git a/drivers/interconnect/qcom/smd-rpm.c b/drivers/interconnect/qcom/smd-rpm.c > index b0183262ba66..b06374340eeb 100644 > --- a/drivers/interconnect/qcom/smd-rpm.c > +++ b/drivers/interconnect/qcom/smd-rpm.c > @@ -16,6 +16,7 @@ > #include "icc-rpm.h" > > #define RPM_KEY_BW 0x00007762 > +#define QCOM_RPM_SMD_KEY_RATE 0x007a484b > > static struct qcom_smd_rpm *icc_smd_rpm; > > @@ -44,6 +45,26 @@ int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val) > } > EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_send); > > +int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int rsc_type, u32 rate) > +{ > + struct clk_smd_rpm_req req = { > + .key = cpu_to_le32(QCOM_RPM_SMD_KEY_RATE), > + .nbytes = cpu_to_le32(sizeof(u32)), > + }; > + > + /* Branch clocks are only on/off */ > + if (clk->branch) > + rate = !!rate; > + > + req.value = cpu_to_le32(rate); > + return qcom_rpm_smd_write(icc_smd_rpm, > + rsc_type, > + clk->resource_type, Sorry to have more minor comments but as you can see here the resource type is taken from the rpm_clk_resource. The parameter that you are describing as "rsc_type" is actually the "ctx" in the other function. :') If you fix this feel free to add my: Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Thanks, Stephan
diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index 9ec90e13bfbd..d857fb1efb75 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -22,6 +22,18 @@ enum qcom_icc_type { QCOM_ICC_QNOC, }; +/** + * struct rpm_clk_resource - RPM bus clock resource + * @resource_type: RPM resource type of the clock resource + * @clock_id: index of the clock resource of a specific resource type + * @branch: whether the resource represents a branch clock +*/ +struct rpm_clk_resource { + u32 resource_type; + u32 clock_id; + bool branch; +}; + #define NUM_BUS_CLKS 2 /** @@ -47,6 +59,7 @@ struct qcom_icc_provider { unsigned int qos_offset; u64 bus_clk_rate[NUM_BUS_CLKS]; struct clk_bulk_data bus_clks[NUM_BUS_CLKS]; + const struct rpm_clk_resource *bus_clk_desc; struct clk_bulk_data *intf_clks; bool keep_alive; bool is_on; @@ -104,6 +117,7 @@ struct qcom_icc_desc { struct qcom_icc_node * const *nodes; size_t num_nodes; const char * const *bus_clocks; + const struct rpm_clk_resource *bus_clk_desc; const char * const *intf_clocks; size_t num_intf_clocks; bool keep_alive; @@ -125,5 +139,6 @@ int qnoc_remove(struct platform_device *pdev); bool qcom_icc_rpm_smd_available(void); int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val); +int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int rsc_type, u32 rate); #endif diff --git a/drivers/interconnect/qcom/smd-rpm.c b/drivers/interconnect/qcom/smd-rpm.c index b0183262ba66..b06374340eeb 100644 --- a/drivers/interconnect/qcom/smd-rpm.c +++ b/drivers/interconnect/qcom/smd-rpm.c @@ -16,6 +16,7 @@ #include "icc-rpm.h" #define RPM_KEY_BW 0x00007762 +#define QCOM_RPM_SMD_KEY_RATE 0x007a484b static struct qcom_smd_rpm *icc_smd_rpm; @@ -44,6 +45,26 @@ int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val) } EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_send); +int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int rsc_type, u32 rate) +{ + struct clk_smd_rpm_req req = { + .key = cpu_to_le32(QCOM_RPM_SMD_KEY_RATE), + .nbytes = cpu_to_le32(sizeof(u32)), + }; + + /* Branch clocks are only on/off */ + if (clk->branch) + rate = !!rate; + + req.value = cpu_to_le32(rate); + return qcom_rpm_smd_write(icc_smd_rpm, + rsc_type, + clk->resource_type, + clk->clock_id, + &req, sizeof(req)); +} +EXPORT_SYMBOL_GPL(qcom_icc_rpm_set_bus_rate); + static int qcom_icc_rpm_smd_remove(struct platform_device *pdev) { icc_smd_rpm = NULL;
Introduce qcom_icc_rpm_set_bus_rate() in preparation for handling RPM clock resources within the interconnect framework. This lets us greatly simplify all of the code handling, as setting the rate comes down to: u32 rate_khz = max(clk.sleep_rate, clk.active_rate, clk_a.active_rate) write_to_rpm(clock.description, rate_khz); Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> --- drivers/interconnect/qcom/icc-rpm.h | 15 +++++++++++++++ drivers/interconnect/qcom/smd-rpm.c | 21 +++++++++++++++++++++ 2 files changed, 36 insertions(+)