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73d779a03a
Add support for handling MMIO based devices via platform driver. We need to make sure that : 1) The APB clock, if present is enabled at probe and via runtime_pm ops 2) Use the ETM4x architecture or CoreSight architecture registers to identify a device as CoreSight ETM4x, instead of relying a white list of "Peripheral IDs" The driver doesn't get to handle the devices yet, until we wire the ACPI changes to move the devices to be handled via platform driver than the etm4_amba driver. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230710062500.45147-5-anshuman.khandual@arm.com