[RFC PATCH 13/14] coresight: etm4x: Add support for sysreg only devices
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: 2020-07-22 17:21:15
Also in:
lkml
Subsystem:
arm/coresight framework and drivers, hardware tracing facilities, the rest · Maintainers:
Suzuki K Poulose, Alexander Shishkin, Linus Torvalds
Add support for etms without memory mapped access. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <redacted> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/hwtracing/coresight/coresight-etm4x.c | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index e91af23ac419..88ec89629507 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c@@ -27,6 +27,7 @@ #include <linux/seq_file.h> #include <linux/uaccess.h> #include <linux/perf_event.h> +#include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/property.h> #include <asm/sections.h>
@@ -1687,6 +1688,11 @@ static int etm4_probe_amba(struct amba_device *adev, const struct amba_id *id) return ret; } +static int etm4_4_probe(struct platform_device *pdev) +{ + return etm4_probe_common(&pdev->dev, NULL); +} + static struct amba_cs_uci_id uci_id_etm4[] = { { /* ETMv4 UCI data */
@@ -1722,3 +1728,18 @@ static struct amba_driver etm4x_driver = { .id_table = etm4_ids, }; builtin_amba_driver(etm4x_driver); + +static const struct of_device_id etm4_4_match[] = { + { .compatible = "arm,coresight-etm-v4.4" }, + {} +}; + +static struct platform_driver etm4_4_driver = { + .probe = etm4_4_probe, + .driver = { + .name = "coresight-etm4x", + .of_match_table = etm4_4_match, + .suppress_bind_attrs = true, + }, +}; +builtin_platform_driver(etm4_4_driver);
--
2.24.1
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