From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: coresight@lists.linaro.org,
Suzuki K Poulose <suzuki.poulose@arm.com>,
linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org,
mike.leach@linaro.org
Subject: [RFC PATCH 13/14] coresight: etm4x: Add support for sysreg only devices
Date: Wed, 22 Jul 2020 18:20:39 +0100 [thread overview]
Message-ID: <20200722172040.1299289-14-suzuki.poulose@arm.com> (raw)
In-Reply-To: <20200722172040.1299289-1-suzuki.poulose@arm.com>
Add support for etms without memory mapped access.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
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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next prev parent reply other threads:[~2020-07-22 17:24 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 17:20 [RFC PATCH 00/14] coresight: Support for ETMv4.4 system instructions Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 01/14] coresight: etm4x: Skip save/restore before device registration Suzuki K Poulose
2020-07-29 18:01 ` Mathieu Poirier
2020-07-30 14:45 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 02/14] coresight: Introduce device access abstraction Suzuki K Poulose
2020-07-29 19:56 ` Mathieu Poirier
2020-07-30 14:58 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 03/14] coresight: tpiu: Use coresight " Suzuki K Poulose
2020-07-29 21:01 ` Mathieu Poirier
2020-07-31 11:36 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 04/14] coresight: etm4x: Free up argument of etm4_init_arch_data Suzuki K Poulose
2020-07-30 17:31 ` Mathieu Poirier
2020-07-31 9:39 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 05/14] coresight: Convert coresight_timeout to use access abstraction Suzuki K Poulose
2020-07-30 18:00 ` Mathieu Poirier
2020-07-22 17:20 ` [RFC PATCH 06/14] coresight: Convert claim and lock operations to use access wrappers Suzuki K Poulose
2020-07-30 19:54 ` Mathieu Poirier
2020-07-31 9:46 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 07/14] coresight: etm4x: Always read the registers on the host CPU Suzuki K Poulose
2020-07-30 19:56 ` Mathieu Poirier
2020-07-22 17:20 ` [RFC PATCH 08/14] coresight: etm4x: Convert all register accesses Suzuki K Poulose
2020-07-30 20:20 ` Mathieu Poirier
2020-07-31 9:49 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 09/14] coresight: etm4x: Add sysreg access helpers Suzuki K Poulose
2020-07-30 21:41 ` Mathieu Poirier
2020-07-31 9:51 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 10/14] coresight: etm4x: Define DEVARCH register fields Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 11/14] coresight: etm4x: Detect system register access support Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 12/14] coresight: etm4x: Refactor probing routine Suzuki K Poulose
2020-07-22 17:20 ` Suzuki K Poulose [this message]
2020-07-22 17:20 ` [RFC PATCH 14/14] dts: bindings: coresight: ETMv4.4 system register access only units Suzuki K Poulose
2020-07-23 17:27 ` Rob Herring
2020-07-29 17:20 ` Mathieu Poirier
2020-07-30 16:38 ` Suzuki K Poulose
2020-08-10 20:14 ` Mathieu Poirier
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