[PATCH v4 06/15] platform: generic: Introduce pmu_init() platform override

[Yu Chien Peter Lin]

Add pmu_init() platform override, which will be used to register
PMU device and populate event mappings.

Signed-off-by: Yu Chien Peter Lin <peterlin at andestech.com>
Reviewed-by: Atish Patra <atishp at rivosinc.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
---
Changes v2 -> v3:
  - New patch
Changes v3 -> v4:
  - Only return pmu_init override on error so fdt_pmu_setup() can be executed
  - Include RB tags
---
 platform/generic/include/platform_override.h | 1 +
 platform/generic/platform.c                  | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/platform/generic/include/platform_override.h b/platform/generic/include/platform_override.h
index bf4b112..f2a4327 100644
--- a/platform/generic/include/platform_override.h
+++ b/platform/generic/include/platform_override.h
@@ -27,6 +27,7 @@ struct platform_override {
 	int (*fdt_fixup)(void *fdt, const struct fdt_match *match);
 	int (*extensions_init)(const struct fdt_match *match,
 			       struct sbi_hart_features *hfeatures);
+	int (*pmu_init)(const struct fdt_match *match);
 	void (*fw_init)(void *fdt, const struct fdt_match *match);
 	int (*vendor_ext_provider)(long funcid,
 				   const struct sbi_trap_regs *regs,
diff --git a/platform/generic/platform.c b/platform/generic/platform.c
index fa400b9..f17e94e 100644
--- a/platform/generic/platform.c
+++ b/platform/generic/platform.c
@@ -267,6 +267,12 @@ static int generic_pmu_init(void)
 {
 	int rc;
 
+	if (generic_plat && generic_plat->pmu_init) {
+		rc = generic_plat->pmu_init(generic_plat_match);
+		if (rc)
+			return rc;
+	}
+
 	rc = fdt_pmu_setup(fdt_get_address());
 	if (rc && rc != SBI_ENOENT)
 		return rc;
-- 
2.34.1