This detects and enables ACPI based TRBE devices via the dummy platform
device created earlier for this purpose.

Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 drivers/hwtracing/coresight/coresight-trbe.c | 9 +++++++++
 drivers/hwtracing/coresight/coresight-trbe.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index e1d9d06e7725..f884883e9018 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -1537,7 +1537,16 @@ static const struct of_device_id arm_trbe_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, arm_trbe_of_match);
 
+#ifdef CONFIG_ACPI
+static const struct platform_device_id arm_trbe_acpi_match[] = {
+	{ ARMV8_TRBE_PDEV_NAME, 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, arm_trbe_acpi_match);
+#endif
+
 static struct platform_driver arm_trbe_driver = {
+	.id_table = arm_trbe_acpi_match,
 	.driver	= {
 		.name = DRVNAME,
 		.of_match_table = of_match_ptr(arm_trbe_of_match),
diff --git a/drivers/hwtracing/coresight/coresight-trbe.h b/drivers/hwtracing/coresight/coresight-trbe.h
index 77cbb5c63878..94e67009848a 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.h
+++ b/drivers/hwtracing/coresight/coresight-trbe.h
@@ -12,6 +12,7 @@
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/perf/arm_pmu.h>
 #include <linux/platform_device.h>
 #include <linux/smp.h>
 
-- 
2.25.1

Hi Anshuman,

kernel test robot noticed the following build errors:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on arm/for-next soc/for-next linus/master arm/fixes v6.5-rc4 next-20230804]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anshuman-Khandual/arm_pmu-acpi-Add-a-representative-platform-device-for-TRBE/20230728-192939
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link:    https://lore.kernel.org/r/20230728112733.359620-4-anshuman.khandual%40arm.com
patch subject: [PATCH 3/3] coresight: trbe: Enable ACPI based TRBE devices
config: arm64-randconfig-r021-20230731 (https://download.01.org/0day-ci/archive/20230805/202308052123.uqR35d19-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce: (https://download.01.org/0day-ci/archive/20230805/202308052123.uqR35d19-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308052123.uqR35d19-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hwtracing/coresight/coresight-trbe.c:1549:14: error: use of undeclared identifier 'arm_trbe_acpi_match'; did you mean 'arm_trbe_of_match'?
           .id_table = arm_trbe_acpi_match,
                       ^~~~~~~~~~~~~~~~~~~
                       arm_trbe_of_match
   drivers/hwtracing/coresight/coresight-trbe.c:1534:34: note: 'arm_trbe_of_match' declared here
   static const struct of_device_id arm_trbe_of_match[] = {
                                    ^
>> drivers/hwtracing/coresight/coresight-trbe.c:1549:14: error: incompatible pointer types initializing 'const struct platform_device_id *' with an expression of type 'const struct of_device_id[2]' [-Werror,-Wincompatible-pointer-types]
           .id_table = arm_trbe_acpi_match,
                       ^~~~~~~~~~~~~~~~~~~
   2 errors generated.


vim +1549 drivers/hwtracing/coresight/coresight-trbe.c

  1547	
  1548	static struct platform_driver arm_trbe_driver = {
> 1549		.id_table = arm_trbe_acpi_match,
  1550		.driver	= {
  1551			.name = DRVNAME,
  1552			.of_match_table = of_match_ptr(arm_trbe_of_match),
  1553			.suppress_bind_attrs = true,
  1554		},
  1555		.probe	= arm_trbe_device_probe,
  1556		.remove	= arm_trbe_device_remove,
  1557	};
  1558	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki