Merge tag 'icc-6.4-rc1' of...

Merge tag 'icc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-next

Georgi writes:

interconnect changes for 6.4

This pull request contains the interconnect changes for the 6.4-rc1 merge
window, which this time are mostly cleanups.

Core changes:
  interconnect: Skip call into provider if initial bw is zero
  interconnect: Use of_property_present() for testing DT property presence
  interconnect: drop racy registration API
  interconnect: drop unused icc_link_destroy() interface

Driver changes:
  interconnect: qcom: Drop obsolete dependency on COMPILE_TEST
  interconnect: qcom: drop obsolete OSM_L3/EPSS defines
  interconnect: qcom: osm-l3: drop unuserd header inclusion
  interconnect: qcom: rpm: drop bogus pm domain attach
  interconnect: qcom: rpm: make QoS INVALID default
  interconnect: qcom: rpm: Add support for specifying channel num
  interconnect: qcom: Sort kerneldoc entries
  dt-bindings: interconnect: OSM L3: Add SM6375 CPUCP compatible
  dt-bindings: interconnect: qcom,msm8998-bwmon: Resolve MSM8998 support
Signed-off-by: Georgi Djakov <djakov@kernel.org>

* tag 'icc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
  dt-bindings: interconnect: qcom,msm8998-bwmon: Resolve MSM8998 support
  dt-bindings: interconnect: OSM L3: Add SM6375 CPUCP compatible
  interconnect: qcom: Sort kerneldoc entries
  interconnect: qcom: rpm: Add support for specifying channel num
  interconnect: qcom: rpm: make QoS INVALID default
  interconnect: qcom: rpm: drop bogus pm domain attach
  interconnect: drop unused icc_link_destroy() interface
  interconnect: drop racy registration API
  interconnect: Use of_property_present() for testing DT property presence
  interconnect: qcom: osm-l3: drop unuserd header inclusion
  interconnect: qcom: drop obsolete OSM_L3/EPSS defines
  interconnect: Skip call into provider if initial bw is zero
  interconnect: qcom: Drop obsolete dependency on COMPILE_TEST

Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml

@@ -22,14 +22,14 @@ description: |
 properties:
   compatible:
     oneOf:
+      - const: qcom,msm8998-bwmon       # BWMON v4
       - items:
           - enum:
               - qcom,sc7280-cpu-bwmon
               - qcom,sc8280xp-cpu-bwmon
-              - qcom,sdm845-bwmon
+              - qcom,sdm845-cpu-bwmon
               - qcom,sm8550-cpu-bwmon
-          - const: qcom,msm8998-bwmon
-      - const: qcom,msm8998-bwmon       # BWMON v4
+          - const: qcom,sdm845-bwmon    # BWMON v4, unified register space
       - items:
           - enum:
               - qcom,sc8280xp-llcc-bwmon
@@ -49,9 +49,13 @@ properties:
     type: object
 
   reg:
-    # BWMON v4 (currently described) and BWMON v5 use one register address
-    # space.  BWMON v2 uses two register spaces - not yet described.
-    maxItems: 1
+    # BWMON v5 uses one register address space, v1-v4 use one or two.
+    minItems: 1
+    maxItems: 2
+
+  reg-names:
+    minItems: 1
+    maxItems: 2
 
 required:
   - compatible
@@ -63,13 +67,36 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          const: qcom,msm8998-bwmon
+    then:
+      properties:
+        reg:
+          minItems: 2
+
+        reg-names:
+          items:
+            - const: monitor
+            - const: global
+
+    else:
+      properties:
+        reg:
+          maxItems: 1
+
+        reg-names:
+          maxItems: 1
+
 examples:
   - |
     #include <dt-bindings/interconnect/qcom,sdm845.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     pmu@1436400 {
-        compatible = "qcom,sdm845-bwmon", "qcom,msm8998-bwmon";
+        compatible = "qcom,sdm845-cpu-bwmon", "qcom,sdm845-bwmon";
         reg = <0x01436400 0x600>;
         interrupts = <GIC_SPI 581 IRQ_TYPE_LEVEL_HIGH>;
         interconnects = <&gladiator_noc MASTER_APPSS_PROC 3 &mem_noc SLAVE_LLCC 3>;

Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml

@@ -29,6 +29,7 @@ properties:
           - enum:
               - qcom,sc7280-epss-l3
               - qcom,sc8280xp-epss-l3
+              - qcom,sm6375-cpucp-l3
               - qcom,sm8250-epss-l3
               - qcom,sm8350-epss-l3
           - const: qcom,epss-l3

drivers/interconnect/core.c

@@ -451,7 +451,7 @@ struct icc_path *of_icc_get_by_index(struct device *dev, int idx)
 	 * When the consumer DT node do not have "interconnects" property
 	 * return a NULL path to skip setting constraints.
 	 */
-	if (!of_find_property(np, "interconnects", NULL))
+	if (!of_property_present(np, "interconnects"))
 		return NULL;
 
 	/*
@@ -544,7 +544,7 @@ struct icc_path *of_icc_get(struct device *dev, const char *name)
 	 * When the consumer DT node do not have "interconnects" property
 	 * return a NULL path to skip setting constraints.
 	 */
-	if (!of_find_property(np, "interconnects", NULL))
+	if (!of_property_present(np, "interconnects"))
 		return NULL;
 
 	/*
@@ -910,52 +910,6 @@ int icc_link_create(struct icc_node *node, const int dst_id)
 }
 EXPORT_SYMBOL_GPL(icc_link_create);
 
-/**
- * icc_link_destroy() - destroy a link between two nodes
- * @src: pointer to source node
- * @dst: pointer to destination node
- *
- * Return: 0 on success, or an error code otherwise
- */
-int icc_link_destroy(struct icc_node *src, struct icc_node *dst)
-{
-	struct icc_node **new;
-	size_t slot;
-	int ret = 0;
-
-	if (IS_ERR_OR_NULL(src))
-		return -EINVAL;
-
-	if (IS_ERR_OR_NULL(dst))
-		return -EINVAL;
-
-	mutex_lock(&icc_lock);
-
-	for (slot = 0; slot < src->num_links; slot++)
-		if (src->links[slot] == dst)
-			break;
-
-	if (WARN_ON(slot == src->num_links)) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	src->links[slot] = src->links[--src->num_links];
-
-	new = krealloc(src->links, src->num_links * sizeof(*src->links),
-		       GFP_KERNEL);
-	if (new)
-		src->links = new;
-	else
-		ret = -ENOMEM;
-
-out:
-	mutex_unlock(&icc_lock);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(icc_link_destroy);
-
 /**
  * icc_node_add() - add interconnect node to interconnect provider
  * @node: pointer to the interconnect node
@@ -981,14 +935,17 @@ void icc_node_add(struct icc_node *node, struct icc_provider *provider)
 	node->avg_bw = node->init_avg;
 	node->peak_bw = node->init_peak;
 
-	if (provider->pre_aggregate)
-		provider->pre_aggregate(node);
+	if (node->avg_bw || node->peak_bw) {
+		if (provider->pre_aggregate)
+			provider->pre_aggregate(node);
 
-	if (provider->aggregate)
-		provider->aggregate(node, 0, node->init_avg, node->init_peak,
-				    &node->avg_bw, &node->peak_bw);
+		if (provider->aggregate)
+			provider->aggregate(node, 0, node->init_avg, node->init_peak,
+					    &node->avg_bw, &node->peak_bw);
+		if (provider->set)
+			provider->set(node, node);
+	}
 
-	provider->set(node, node);
 	node->avg_bw = 0;
 	node->peak_bw = 0;
 
@@ -1081,22 +1038,6 @@ void icc_provider_deregister(struct icc_provider *provider)
 }
 EXPORT_SYMBOL_GPL(icc_provider_deregister);
 
-int icc_provider_add(struct icc_provider *provider)
-{
-	icc_provider_init(provider);
-
-	return icc_provider_register(provider);
-}
-EXPORT_SYMBOL_GPL(icc_provider_add);
-
-void icc_provider_del(struct icc_provider *provider)
-{
-	WARN_ON(!list_empty(&provider->nodes));
-
-	icc_provider_deregister(provider);
-}
-EXPORT_SYMBOL_GPL(icc_provider_del);
-
 static const struct of_device_id __maybe_unused ignore_list[] = {
 	{ .compatible = "qcom,sc7180-ipa-virt" },
 	{ .compatible = "qcom,sc8180x-ipa-virt" },

drivers/interconnect/qcom/Kconfig

@@ -83,7 +83,7 @@ config INTERCONNECT_QCOM_RPMH_POSSIBLE
 	default INTERCONNECT_QCOM
 	depends on QCOM_RPMH || (COMPILE_TEST && !QCOM_RPMH)
 	depends on QCOM_COMMAND_DB || (COMPILE_TEST && !QCOM_COMMAND_DB)
-	depends on OF || COMPILE_TEST
+	depends on OF
 	help
 	  Compile-testing RPMH drivers is possible on other platforms,
 	  but in order to avoid link failures, drivers must not be built-in

drivers/interconnect/qcom/icc-rpm.c

@@ -11,7 +11,6 @@
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
-#include <linux/pm_domain.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
@@ -48,6 +47,9 @@
 #define NOC_QOS_MODEn_ADDR(n)		(0xc + (n * 0x1000))
 #define NOC_QOS_MODEn_MASK		0x3
 
+#define NOC_QOS_MODE_FIXED_VAL		0x0
+#define NOC_QOS_MODE_BYPASS_VAL		0x2
+
 static int qcom_icc_set_qnoc_qos(struct icc_node *src, u64 max_bw)
 {
 	struct icc_provider *provider = src->provider;
@@ -153,7 +155,7 @@ static int qcom_icc_set_noc_qos(struct icc_node *src, u64 max_bw)
 	struct qcom_icc_provider *qp;
 	struct qcom_icc_node *qn;
 	struct icc_provider *provider;
-	u32 mode = NOC_QOS_MODE_BYPASS;
+	u32 mode = NOC_QOS_MODE_BYPASS_VAL;
 	int rc = 0;
 
 	qn = src->data;
@@ -167,18 +169,17 @@ static int qcom_icc_set_noc_qos(struct icc_node *src, u64 max_bw)
 		return 0;
 	}
 
-	if (qn->qos.qos_mode != NOC_QOS_MODE_INVALID)
-		mode = qn->qos.qos_mode;
-
-	if (mode == NOC_QOS_MODE_FIXED) {
-		dev_dbg(src->provider->dev, "NoC QoS: %s: Set Fixed mode\n",
-			qn->name);
+	if (qn->qos.qos_mode == NOC_QOS_MODE_FIXED) {
+		dev_dbg(src->provider->dev, "NoC QoS: %s: Set Fixed mode\n", qn->name);
+		mode = NOC_QOS_MODE_FIXED_VAL;
 		rc = qcom_icc_noc_set_qos_priority(qp, &qn->qos);
 		if (rc)
 			return rc;
-	} else if (mode == NOC_QOS_MODE_BYPASS) {
-		dev_dbg(src->provider->dev, "NoC QoS: %s: Set Bypass mode\n",
-			qn->name);
+	} else if (qn->qos.qos_mode == NOC_QOS_MODE_BYPASS) {
+		dev_dbg(src->provider->dev, "NoC QoS: %s: Set Bypass mode\n", qn->name);
+		mode = NOC_QOS_MODE_BYPASS_VAL;
+	} else {
+		/* How did we get here? */
 	}
 
 	return regmap_update_bits(qp->regmap,
@@ -244,7 +245,7 @@ static int __qcom_icc_set(struct icc_node *n, struct qcom_icc_node *qn,
 		ret = qcom_icc_rpm_set(qn->mas_rpm_id, qn->slv_rpm_id, sum_bw);
 		if (ret)
 			return ret;
-	} else if (qn->qos.qos_mode != -1) {
+	} else if (qn->qos.qos_mode != NOC_QOS_MODE_INVALID) {
 		/* set bandwidth directly from the AP */
 		ret = qcom_icc_qos_set(n, sum_bw);
 		if (ret)
@@ -315,6 +316,7 @@ static void qcom_icc_bus_aggregate(struct icc_provider *provider,
 {
 	struct icc_node *node;
 	struct qcom_icc_node *qn;
+	u64 sum_avg[QCOM_ICC_NUM_BUCKETS];
 	int i;
 
 	/* Initialise aggregate values */
@@ -332,7 +334,11 @@ static void qcom_icc_bus_aggregate(struct icc_provider *provider,
 	list_for_each_entry(node, &provider->nodes, node_list) {
 		qn = node->data;
 		for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) {
-			agg_avg[i] += qn->sum_avg[i];
+			if (qn->channels)
+				sum_avg[i] = div_u64(qn->sum_avg[i], qn->channels);
+			else
+				sum_avg[i] = qn->sum_avg[i];
+			agg_avg[i] += sum_avg[i];
 			agg_peak[i] = max_t(u64, agg_peak[i], qn->max_peak[i]);
 		}
 	}
@@ -496,12 +502,6 @@ int qnoc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (desc->has_bus_pd) {
-		ret = dev_pm_domain_attach(dev, true);
-		if (ret)
-			return ret;
-	}
-
 	provider = &qp->provider;
 	provider->dev = dev;
 	provider->set = qcom_icc_set;

drivers/interconnect/qcom/icc-rpm.h

@@ -23,12 +23,12 @@ enum qcom_icc_type {
 /**
  * struct qcom_icc_provider - Qualcomm specific interconnect provider
  * @provider: generic interconnect provider
- * @bus_clks: the clk_bulk_data table of bus clocks
  * @num_clks: the total number of clk_bulk_data entries
  * @type: the ICC provider type
- * @qos_offset: offset to QoS registers
  * @regmap: regmap for QoS registers read/write access
+ * @qos_offset: offset to QoS registers
  * @bus_clk_rate: bus clock rate in Hz
+ * @bus_clks: the clk_bulk_data table of bus clocks
  */
 struct qcom_icc_provider {
 	struct icc_provider provider;
@@ -66,6 +66,7 @@ struct qcom_icc_qos {
  * @id: a unique node identifier
  * @links: an array of nodes where we can go next while traversing
  * @num_links: the total number of @links
+ * @channels: number of channels at this node (e.g. DDR channels)
  * @buswidth: width of the interconnect between a node and the bus (bytes)
  * @sum_avg: current sum aggregate value of all avg bw requests
  * @max_peak: current max aggregate value of all peak bw requests
@@ -78,6 +79,7 @@ struct qcom_icc_node {
 	u16 id;
 	const u16 *links;
 	u16 num_links;
+	u16 channels;
 	u16 buswidth;
 	u64 sum_avg[QCOM_ICC_NUM_BUCKETS];
 	u64 max_peak[QCOM_ICC_NUM_BUCKETS];
@@ -91,16 +93,17 @@ struct qcom_icc_desc {
 	size_t num_nodes;
 	const char * const *clocks;
 	size_t num_clocks;
-	bool has_bus_pd;
 	enum qcom_icc_type type;
 	const struct regmap_config *regmap_cfg;
 	unsigned int qos_offset;
 };
 
-/* Valid for both NoC and BIMC */
-#define NOC_QOS_MODE_INVALID		-1
-#define NOC_QOS_MODE_FIXED		0x0
-#define NOC_QOS_MODE_BYPASS		0x2
+/* Valid for all bus types */
+enum qos_mode {
+	NOC_QOS_MODE_INVALID = 0,
+	NOC_QOS_MODE_FIXED,
+	NOC_QOS_MODE_BYPASS,
+};
 
 int qnoc_probe(struct platform_device *pdev);
 int qnoc_remove(struct platform_device *pdev);

drivers/interconnect/qcom/msm8996.c

@@ -1823,7 +1823,6 @@ static const struct qcom_icc_desc msm8996_a0noc = {
 	.num_nodes = ARRAY_SIZE(a0noc_nodes),
 	.clocks = bus_a0noc_clocks,
 	.num_clocks = ARRAY_SIZE(bus_a0noc_clocks),
-	.has_bus_pd = true,
 	.regmap_cfg = &msm8996_a0noc_regmap_config
 };
 

drivers/interconnect/qcom/osm-l3.c

@@ -14,13 +14,6 @@
 
 #include <dt-bindings/interconnect/qcom,osm-l3.h>
 
-#include "sc7180.h"
-#include "sc7280.h"
-#include "sc8180x.h"
-#include "sdm845.h"
-#include "sm8150.h"
-#include "sm8250.h"
-
 #define LUT_MAX_ENTRIES			40U
 #define LUT_SRC				GENMASK(31, 30)
 #define LUT_L_VAL			GENMASK(7, 0)

drivers/interconnect/qcom/sc7180.h

@@ -145,7 +145,5 @@
 #define SC7180_SLAVE_SERVICE_SNOC			134
 #define SC7180_SLAVE_QDSS_STM				135
 #define SC7180_SLAVE_TCU				136
-#define SC7180_MASTER_OSM_L3_APPS			137
-#define SC7180_SLAVE_OSM_L3				138
 
 #endif

drivers/interconnect/qcom/sc7280.h

@@ -150,7 +150,5 @@
 #define SC7280_SLAVE_PCIE_1			139
 #define SC7280_SLAVE_QDSS_STM			140
 #define SC7280_SLAVE_TCU			141
-#define SC7280_MASTER_EPSS_L3_APPS		142
-#define SC7280_SLAVE_EPSS_L3			143
 
 #endif

drivers/interconnect/qcom/sc8180x.h

@@ -168,8 +168,6 @@
 #define SC8180X_SLAVE_EBI_CH0_DISPLAY		158
 #define SC8180X_SLAVE_MNOC_SF_MEM_NOC_DISPLAY	159
 #define SC8180X_SLAVE_MNOC_HF_MEM_NOC_DISPLAY	160
-#define SC8180X_MASTER_OSM_L3_APPS		161
-#define SC8180X_SLAVE_OSM_L3			162
 
 #define SC8180X_MASTER_QUP_CORE_0		163
 #define SC8180X_MASTER_QUP_CORE_1		164

drivers/interconnect/qcom/sdm845.h

@@ -136,7 +136,5 @@
 #define SDM845_SLAVE_SERVICE_SNOC			128
 #define SDM845_SLAVE_QDSS_STM				129
 #define SDM845_SLAVE_TCU				130
-#define SDM845_MASTER_OSM_L3_APPS			131
-#define SDM845_SLAVE_OSM_L3				132
 
 #endif /* __DRIVERS_INTERCONNECT_QCOM_SDM845_H__ */

drivers/interconnect/qcom/sm8150.h

@@ -148,7 +148,5 @@
 #define SM8150_SLAVE_VSENSE_CTRL_CFG		137
 #define SM8150_SNOC_CNOC_MAS			138
 #define SM8150_SNOC_CNOC_SLV			139
-#define SM8150_MASTER_OSM_L3_APPS		140
-#define SM8150_SLAVE_OSM_L3			141
 
 #endif

drivers/interconnect/qcom/sm8250.h

@@ -158,7 +158,5 @@
 #define SM8250_SLAVE_VSENSE_CTRL_CFG		147
 #define SM8250_SNOC_CNOC_MAS			148
 #define SM8250_SNOC_CNOC_SLV			149
-#define SM8250_MASTER_EPSS_L3_APPS		150
-#define SM8250_SLAVE_EPSS_L3			151
 
 #endif

include/linux/interconnect-provider.h

@@ -118,15 +118,12 @@ int icc_std_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
 struct icc_node *icc_node_create(int id);
 void icc_node_destroy(int id);
 int icc_link_create(struct icc_node *node, const int dst_id);
-int icc_link_destroy(struct icc_node *src, struct icc_node *dst);
 void icc_node_add(struct icc_node *node, struct icc_provider *provider);
 void icc_node_del(struct icc_node *node);
 int icc_nodes_remove(struct icc_provider *provider);
 void icc_provider_init(struct icc_provider *provider);
 int icc_provider_register(struct icc_provider *provider);
 void icc_provider_deregister(struct icc_provider *provider);
-int icc_provider_add(struct icc_provider *provider);
-void icc_provider_del(struct icc_provider *provider);
 struct icc_node_data *of_icc_get_from_provider(struct of_phandle_args *spec);
 void icc_sync_state(struct device *dev);
 
@@ -152,11 +149,6 @@ static inline int icc_link_create(struct icc_node *node, const int dst_id)
 	return -ENOTSUPP;
 }
 
-static inline int icc_link_destroy(struct icc_node *src, struct icc_node *dst)
-{
-	return -ENOTSUPP;
-}
-
 static inline void icc_node_add(struct icc_node *node, struct icc_provider *provider)
 {
 }
@@ -179,15 +171,6 @@ static inline int icc_provider_register(struct icc_provider *provider)
 
 static inline void icc_provider_deregister(struct icc_provider *provider) { }
 
-static inline int icc_provider_add(struct icc_provider *provider)
-{
-	return -ENOTSUPP;
-}
-
-static inline void icc_provider_del(struct icc_provider *provider)
-{
-}
-
 static inline struct icc_node_data *of_icc_get_from_provider(struct of_phandle_args *spec)
 {
 	return ERR_PTR(-ENOTSUPP);