perf/marvell: Add ACPI support to TAD uncore driver

Add support for ACPI based device registration so that the driver
can be also enabled through ACPI table.
While at that change the DT specific API's to device_* API's so that
both DT based and ACPI based probing works.

Signed-off-by: Gowthami Thiagarajan <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Will Deacon <[e-mail]>

drivers/perf/marvell_cn10k_tad_pmu.c

···
 #include <linux/cpuhotplug.h>
 #include <linux/perf_event.h>
 #include <linux/platform_device.h>
+#include <linux/acpi.h>
 
 #define TAD_PFC_OFFSET		0x800
 #define TAD_PFC(counter)	(TAD_PFC_OFFSET | (counter << 3))
···
 
 static int tad_pmu_probe(struct platform_device *pdev)
 {
-	struct device_node *node = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
 	struct tad_region *regions;
 	struct tad_pmu *tad_pmu;
 	struct resource *res;
···
 		return -ENODEV;
 	}
 
-	ret = of_property_read_u32(node, "marvell,tad-page-size",
-				   &tad_page_size);
+	ret = device_property_read_u32(dev, "marvell,tad-page-size",
+				       &tad_page_size);
 	if (ret) {
 		dev_err(&pdev->dev, "Can't find tad-page-size property\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(node, "marvell,tad-pmu-page-size",
-				   &tad_pmu_page_size);
+	ret = device_property_read_u32(dev, "marvell,tad-pmu-page-size",
+				       &tad_pmu_page_size);
 	if (ret) {
 		dev_err(&pdev->dev, "Can't find tad-pmu-page-size property\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(node, "marvell,tad-cnt", &tad_cnt);
+	ret = device_property_read_u32(dev, "marvell,tad-cnt", &tad_cnt);
 	if (ret) {
 		dev_err(&pdev->dev, "Can't find tad-cnt property\n");
 		return ret;
···
 };
 #endif
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id tad_pmu_acpi_match[] = {
+	{"MRVL000B", 0},
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, tad_pmu_acpi_match);
+#endif
+
 static struct platform_driver tad_pmu_driver = {
 	.driver         = {
 		.name   = "cn10k_tad_pmu",
 		.of_match_table = of_match_ptr(tad_pmu_of_match),
+		.acpi_match_table = ACPI_PTR(tad_pmu_acpi_match),
 		.suppress_bind_attrs = true,
 	},
 	.probe          = tad_pmu_probe,