linux-kernel - Re: [PATCH v2 01/10] interconnect: qcom: osm-l3: Use platform-independent node ids

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Date:   Fri, 11 Nov 2022 15:53:24 +0530
From:   Sibi Sankar <quic_sibis@...cinc.com>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Georgi Djakov <djakov@...nel.org>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        Mike Tipton <quic_mdtipton@...cinc.com>,
        "Johan Hovold" <johan+linaro@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 01/10] interconnect: qcom: osm-l3: Use
 platform-independent node ids

Hey Bjorn
Thanks for the patch.

On 11/11/22 08:55, Bjorn Andersson wrote:
> The identifiers used for nodes needs to be unique in the running system,
> but defining them per platform results in a lot of duplicated
> definitions and prevents us from using generic compatibles.
> 
> As these identifiers are not exposed outside the kernel, change to use
> driver-local numbers, picked completely at random.
> 
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> Tested-by: Steev Klimaszewski <steev@...i.org>

With the change in implementation, you can remove now remove the per soc
node id headers included in the driver. With ^^ done.

Reviewed-by: Sibi Sankar <quic_sibis@...cinc.com>

> ---
> 
> Changes since v1:
> - None
> 
>   drivers/interconnect/qcom/osm-l3.c | 87 +++++++++++-------------------
>   1 file changed, 30 insertions(+), 57 deletions(-)
> 
> diff --git a/drivers/interconnect/qcom/osm-l3.c b/drivers/interconnect/qcom/osm-l3.c
> index ddbdf0943f94..d23769844419 100644
> --- a/drivers/interconnect/qcom/osm-l3.c
> +++ b/drivers/interconnect/qcom/osm-l3.c
> @@ -74,6 +74,11 @@ struct qcom_osm_l3_desc {
>   	unsigned int reg_perf_state;
>   };
>   
> +enum {
> +	OSM_L3_MASTER_NODE = 10000,
> +	OSM_L3_SLAVE_NODE,
> +};
> +
>   #define DEFINE_QNODE(_name, _id, _buswidth, ...)			\
>   	static const struct qcom_osm_l3_node _name = {			\
>   		.name = #_name,						\
> @@ -83,97 +88,65 @@ struct qcom_osm_l3_desc {
>   		.links = { __VA_ARGS__ },				\
>   	}
>   
> -DEFINE_QNODE(sdm845_osm_apps_l3, SDM845_MASTER_OSM_L3_APPS, 16, SDM845_SLAVE_OSM_L3);
> -DEFINE_QNODE(sdm845_osm_l3, SDM845_SLAVE_OSM_L3, 16);
> +DEFINE_QNODE(osm_l3_master, OSM_L3_MASTER_NODE, 16, OSM_L3_SLAVE_NODE);
> +DEFINE_QNODE(osm_l3_slave, OSM_L3_SLAVE_NODE, 16);
> +
> +static const struct qcom_osm_l3_node * const osm_l3_nodes[] = {
> +	[MASTER_OSM_L3_APPS] = &osm_l3_master,
> +	[SLAVE_OSM_L3] = &osm_l3_slave,
> +};
> +
> +DEFINE_QNODE(epss_l3_master, OSM_L3_MASTER_NODE, 32, OSM_L3_SLAVE_NODE);
> +DEFINE_QNODE(epss_l3_slave, OSM_L3_SLAVE_NODE, 32);
>   
> -static const struct qcom_osm_l3_node * const sdm845_osm_l3_nodes[] = {
> -	[MASTER_OSM_L3_APPS] = &sdm845_osm_apps_l3,
> -	[SLAVE_OSM_L3] = &sdm845_osm_l3,
> +static const struct qcom_osm_l3_node * const epss_l3_nodes[] = {
> +	[MASTER_EPSS_L3_APPS] = &epss_l3_master,
> +	[SLAVE_EPSS_L3_SHARED] = &epss_l3_slave,
>   };
>   
>   static const struct qcom_osm_l3_desc sdm845_icc_osm_l3 = {
> -	.nodes = sdm845_osm_l3_nodes,
> -	.num_nodes = ARRAY_SIZE(sdm845_osm_l3_nodes),
> +	.nodes = osm_l3_nodes,
> +	.num_nodes = ARRAY_SIZE(osm_l3_nodes),
>   	.lut_row_size = OSM_LUT_ROW_SIZE,
>   	.reg_freq_lut = OSM_REG_FREQ_LUT,
>   	.reg_perf_state = OSM_REG_PERF_STATE,
>   };
>   
> -DEFINE_QNODE(sc7180_osm_apps_l3, SC7180_MASTER_OSM_L3_APPS, 16, SC7180_SLAVE_OSM_L3);
> -DEFINE_QNODE(sc7180_osm_l3, SC7180_SLAVE_OSM_L3, 16);
> -
> -static const struct qcom_osm_l3_node * const sc7180_osm_l3_nodes[] = {
> -	[MASTER_OSM_L3_APPS] = &sc7180_osm_apps_l3,
> -	[SLAVE_OSM_L3] = &sc7180_osm_l3,
> -};
> -
>   static const struct qcom_osm_l3_desc sc7180_icc_osm_l3 = {
> -	.nodes = sc7180_osm_l3_nodes,
> -	.num_nodes = ARRAY_SIZE(sc7180_osm_l3_nodes),
> +	.nodes = osm_l3_nodes,
> +	.num_nodes = ARRAY_SIZE(osm_l3_nodes),
>   	.lut_row_size = OSM_LUT_ROW_SIZE,
>   	.reg_freq_lut = OSM_REG_FREQ_LUT,
>   	.reg_perf_state = OSM_REG_PERF_STATE,
>   };
>   
> -DEFINE_QNODE(sc7280_epss_apps_l3, SC7280_MASTER_EPSS_L3_APPS, 32, SC7280_SLAVE_EPSS_L3);
> -DEFINE_QNODE(sc7280_epss_l3, SC7280_SLAVE_EPSS_L3, 32);
> -
> -static const struct qcom_osm_l3_node * const sc7280_epss_l3_nodes[] = {
> -	[MASTER_EPSS_L3_APPS] = &sc7280_epss_apps_l3,
> -	[SLAVE_EPSS_L3_SHARED] = &sc7280_epss_l3,
> -};
> -
>   static const struct qcom_osm_l3_desc sc7280_icc_epss_l3 = {
> -	.nodes = sc7280_epss_l3_nodes,
> -	.num_nodes = ARRAY_SIZE(sc7280_epss_l3_nodes),
> +	.nodes = epss_l3_nodes,
> +	.num_nodes = ARRAY_SIZE(epss_l3_nodes),
>   	.lut_row_size = EPSS_LUT_ROW_SIZE,
>   	.reg_freq_lut = EPSS_REG_FREQ_LUT,
>   	.reg_perf_state = EPSS_REG_PERF_STATE,
>   };
>   
> -DEFINE_QNODE(sc8180x_osm_apps_l3, SC8180X_MASTER_OSM_L3_APPS, 32, SC8180X_SLAVE_OSM_L3);
> -DEFINE_QNODE(sc8180x_osm_l3, SC8180X_SLAVE_OSM_L3, 32);
> -
> -static const struct qcom_osm_l3_node * const sc8180x_osm_l3_nodes[] = {
> -	[MASTER_OSM_L3_APPS] = &sc8180x_osm_apps_l3,
> -	[SLAVE_OSM_L3] = &sc8180x_osm_l3,
> -};
> -
>   static const struct qcom_osm_l3_desc sc8180x_icc_osm_l3 = {
> -	.nodes = sc8180x_osm_l3_nodes,
> -	.num_nodes = ARRAY_SIZE(sc8180x_osm_l3_nodes),
> +	.nodes = osm_l3_nodes,
> +	.num_nodes = ARRAY_SIZE(osm_l3_nodes),
>   	.lut_row_size = OSM_LUT_ROW_SIZE,
>   	.reg_freq_lut = OSM_REG_FREQ_LUT,
>   	.reg_perf_state = OSM_REG_PERF_STATE,
>   };
>   
> -DEFINE_QNODE(sm8150_osm_apps_l3, SM8150_MASTER_OSM_L3_APPS, 32, SM8150_SLAVE_OSM_L3);
> -DEFINE_QNODE(sm8150_osm_l3, SM8150_SLAVE_OSM_L3, 32);
> -
> -static const struct qcom_osm_l3_node * const sm8150_osm_l3_nodes[] = {
> -	[MASTER_OSM_L3_APPS] = &sm8150_osm_apps_l3,
> -	[SLAVE_OSM_L3] = &sm8150_osm_l3,
> -};
> -
>   static const struct qcom_osm_l3_desc sm8150_icc_osm_l3 = {
> -	.nodes = sm8150_osm_l3_nodes,
> -	.num_nodes = ARRAY_SIZE(sm8150_osm_l3_nodes),
> +	.nodes = osm_l3_nodes,
> +	.num_nodes = ARRAY_SIZE(osm_l3_nodes),
>   	.lut_row_size = OSM_LUT_ROW_SIZE,
>   	.reg_freq_lut = OSM_REG_FREQ_LUT,
>   	.reg_perf_state = OSM_REG_PERF_STATE,
>   };
>   
> -DEFINE_QNODE(sm8250_epss_apps_l3, SM8250_MASTER_EPSS_L3_APPS, 32, SM8250_SLAVE_EPSS_L3);
> -DEFINE_QNODE(sm8250_epss_l3, SM8250_SLAVE_EPSS_L3, 32);
> -
> -static const struct qcom_osm_l3_node * const sm8250_epss_l3_nodes[] = {
> -	[MASTER_EPSS_L3_APPS] = &sm8250_epss_apps_l3,
> -	[SLAVE_EPSS_L3_SHARED] = &sm8250_epss_l3,
> -};
> -
>   static const struct qcom_osm_l3_desc sm8250_icc_epss_l3 = {
> -	.nodes = sm8250_epss_l3_nodes,
> -	.num_nodes = ARRAY_SIZE(sm8250_epss_l3_nodes),
> +	.nodes = epss_l3_nodes,
> +	.num_nodes = ARRAY_SIZE(epss_l3_nodes),
>   	.lut_row_size = EPSS_LUT_ROW_SIZE,
>   	.reg_freq_lut = EPSS_REG_FREQ_LUT,
>   	.reg_perf_state = EPSS_REG_PERF_STATE,