On 21/11/2024 12:30, Raviteja Laggyshetty wrote:
> Add Epoch Subsystem (EPSS) L3 interconnect provider on
> SA8775P SoCs with multiple device support.
>
...
> -DEFINE_QNODE(osm_l3_master, OSM_L3_MASTER_NODE, 16, OSM_L3_SLAVE_NODE);
> -DEFINE_QNODE(osm_l3_slave, OSM_L3_SLAVE_NODE, 16);
> +DEFINE_QNODE(osm_l3_master, 16, osm_l3_slave);
> +DEFINE_QNODE(osm_l3_slave, 16);
>
> -static const struct qcom_osm_l3_node * const osm_l3_nodes[] = {
> +static 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);
> +DEFINE_QNODE(epss_l3_master, 32, epss_l3_slave);
> +DEFINE_QNODE(epss_l3_slave, 32);
>
> -static const struct qcom_osm_l3_node * const epss_l3_nodes[] = {
> +static struct qcom_osm_l3_node * const epss_l3_nodes[] = {
I think dropping const makes the code worse, not better. Commit msg does
not explain all these changes and I could not figure out the intention
(except modifying but that's just obvious).
> [MASTER_EPSS_L3_APPS] = &epss_l3_master,
> [SLAVE_EPSS_L3_SHARED] = &epss_l3_slave,
> };
> @@ -123,6 +125,19 @@ static const struct qcom_osm_l3_desc epss_l3_l3_vote = {
> .reg_perf_state = EPSS_REG_L3_VOTE,
> };
>
> +static u16 get_node_id_by_name(const char *node_name,
> + const struct qcom_osm_l3_desc *desc)
> +{
> + struct qcom_osm_l3_node *const *nodes = desc->nodes;
> + int i;
> +
> + for (i = 0; i < desc->num_nodes; i++) {
> + if (!strcmp(nodes[i]->name, node_name))
> + return nodes[i]->id;
> + }
> + return 0;
> +}
> +
> static int qcom_osm_l3_set(struct icc_node *src, struct icc_node *dst)
> {
> struct qcom_osm_l3_icc_provider *qp;
> @@ -164,10 +179,11 @@ static int qcom_osm_l3_probe(struct platform_device *pdev)
> const struct qcom_osm_l3_desc *desc;
> struct icc_onecell_data *data;
> struct icc_provider *provider;
> - const struct qcom_osm_l3_node * const *qnodes;
> + struct qcom_osm_l3_node * const *qnodes;
> struct icc_node *node;
> size_t num_nodes;
> struct clk *clk;
> + u64 addr;
> int ret;
>
> clk = clk_get(&pdev->dev, "xo");
> @@ -188,6 +204,10 @@ static int qcom_osm_l3_probe(struct platform_device *pdev)
> if (!qp)
> return -ENOMEM;
>
> + ret = of_property_read_reg(pdev->dev.of_node, 0, &addr, NULL);
> + if (ret)
> + return ret;
> +
> qp->base = devm_platform_ioremap_resource(pdev, 0);
> if (IS_ERR(qp->base))
> return PTR_ERR(qp->base);
> @@ -242,8 +262,13 @@ static int qcom_osm_l3_probe(struct platform_device *pdev)
>
> icc_provider_init(provider);
>
> + /* Allocate unique id for qnodes */
> + for (i = 0; i < num_nodes; i++)
> + qnodes[i]->id = ida_alloc_min(&osm_l3_id, OSM_L3_NODE_ID_START, GFP_KERNEL);
> +
> for (i = 0; i < num_nodes; i++) {
> - size_t j;
> + char *node_name;
> + size_t j, len;
>
> node = icc_node_create(qnodes[i]->id);
> if (IS_ERR(node)) {
> @@ -251,13 +276,29 @@ static int qcom_osm_l3_probe(struct platform_device *pdev)
> goto err;
> }
>
> - node->name = qnodes[i]->name;
> + /* len = strlen(node->name) + @ + 8 (base-address) + NULL */
> + len = strlen(qnodes[i]->name) + OSM_NODE_NAME_SUFFIX_SIZE;
> + node_name = devm_kzalloc(&pdev->dev, len, GFP_KERNEL);
> + if (!node_name) {
> + ret = -ENOMEM;
> + goto err;
> + }
> +
> + snprintf(node_name, len, "%s@%08llx", qnodes[i]->name, addr);
> + node->name = node_name;
Why the node name becomes dynamic?
Best regards,
Krzysztof
