net: ipa: use interconnect bulk enable/disable operations

The power interconnect array is now an array of icc_bulk_data
structures, which is what the interconnect bulk enable and disable
functions require.

Get rid of ipa_interconnect_enable() and ipa_interconnect_disable(),
and just call icc_bulk_enable() and icc_bulk_disable() instead.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ipa/ipa_power.c

@@ -156,86 +156,34 @@ static void ipa_interconnect_exit(struct ipa_power *power)
 	power->interconnect = NULL;
 }
 
-/* Currently we only use one bandwidth level, so just "enable" interconnects */
-static int ipa_interconnect_enable(struct ipa *ipa)
-{
-	struct icc_bulk_data *interconnect;
-	struct ipa_power *power = ipa->power;
-	int ret;
-	u32 i;
-
-	interconnect = power->interconnect;
-	for (i = 0; i < power->interconnect_count; i++) {
-		ret = icc_enable(interconnect->path);
-		if (ret) {
-			dev_err(&ipa->pdev->dev,
-				"error %d enabling %s interconnect\n",
-				ret, interconnect->name);
-			goto out_unwind;
-		}
-		interconnect++;
-	}
-
-	return 0;
-
-out_unwind:
-	while (interconnect-- > power->interconnect)
-		(void)icc_disable(interconnect->path);
-
-	return ret;
-}
-
-/* To disable an interconnect, we just its bandwidth to 0 */
-static int ipa_interconnect_disable(struct ipa *ipa)
-{
-	struct ipa_power *power = ipa->power;
-	struct device *dev = &ipa->pdev->dev;
-	struct icc_bulk_data *interconnect;
-	int result = 0;
-	u32 count;
-	int ret;
-
-	count = power->interconnect_count;
-	interconnect = power->interconnect + count;
-	while (count--) {
-		interconnect--;
-		ret = icc_disable(interconnect->path);
-		if (ret) {
-			dev_err(dev, "error %d disabling %s interconnect\n",
-				ret, interconnect->name);
-			/* Try to disable all; record only the first error */
-			if (!result)
-				result = ret;
-		}
-	}
-
-	return result;
-}
-
 /* Enable IPA power, enabling interconnects and the core clock */
 static int ipa_power_enable(struct ipa *ipa)
 {
+	struct ipa_power *power = ipa->power;
 	int ret;
 
-	ret = ipa_interconnect_enable(ipa);
+	ret = icc_bulk_enable(power->interconnect_count, power->interconnect);
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(ipa->power->core);
+	ret = clk_prepare_enable(power->core);
 	if (ret) {
 		dev_err(&ipa->pdev->dev, "error %d enabling core clock\n", ret);
-		(void)ipa_interconnect_disable(ipa);
+		icc_bulk_disable(power->interconnect_count,
+				 power->interconnect);
 	}
 
 	return ret;
 }
 
 /* Inverse of ipa_power_enable() */
-static int ipa_power_disable(struct ipa *ipa)
+static void ipa_power_disable(struct ipa *ipa)
 {
-	clk_disable_unprepare(ipa->power->core);
+	struct ipa_power *power = ipa->power;
+
+	clk_disable_unprepare(power->core);
 
-	return ipa_interconnect_disable(ipa);
+	icc_bulk_disable(power->interconnect_count, power->interconnect);
 }
 
 static int ipa_runtime_suspend(struct device *dev)
@@ -249,7 +197,9 @@ static int ipa_runtime_suspend(struct device *dev)
 		gsi_suspend(&ipa->gsi);
 	}
 
-	return ipa_power_disable(ipa);
+	ipa_power_disable(ipa);
+
+	return 0;
 }
 
 static int ipa_runtime_resume(struct device *dev)