Rafael, Len

Ping (packets 6, lost 100%).


On 10/07/2023 17:40, Suzuki K Poulose wrote:

Rafael, Len

On 10/07/2023 07:25, Anshuman Khandual wrote:

quoted

From: Suzuki K Poulose <suzuki.poulose@arm.com>

Drop ETM4X ACPI ID from the AMBA ACPI device list, and instead just 
move it
inside the new ACPI devices list detected and used via platform driver.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <redacted>
Cc: Leo Yan <redacted>
Cc: Sudeep Holla <redacted>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: linux-acpi@vger.kernel.org
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Sudeep Holla <redacted> (for ACPI specific 
changes)
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Anshuman Khandual <redacted>

We would like to queue this via coresight tree. The acpi_amba bits have
been reviewed by Sudeep. Please could you give us an Ack, if you are
happy with the proposal ?

Kind regards
Suzuki

Kind regards
Suzuki

quoted

---
  drivers/acpi/acpi_amba.c                           |  1 -
  drivers/hwtracing/coresight/coresight-etm4x-core.c | 10 ++++++++++
  2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_amba.c b/drivers/acpi/acpi_amba.c
index f5b443ab01c2..099966cbac5a 100644
--- a/drivers/acpi/acpi_amba.c
+++ b/drivers/acpi/acpi_amba.c

@@ -22,7 +22,6 @@

  static const struct acpi_device_id amba_id_list[] = {
      {"ARMH0061", 0}, /* PL061 GPIO Device */
      {"ARMH0330", 0}, /* ARM DMA Controller DMA-330 */
-    {"ARMHC500", 0}, /* ARM CoreSight ETM4x */
      {"ARMHC501", 0}, /* ARM CoreSight ETR */
      {"ARMHC502", 0}, /* ARM CoreSight STM */
      {"ARMHC503", 0}, /* ARM CoreSight Debug */

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c 

b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 43f583987250..703b6fcbb6a5 100644

--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c

@@ -3,6 +3,7 @@

   * Copyright (c) 2014, The Linux Foundation. All rights reserved.
   */
+#include <linux/acpi.h>
  #include <linux/bitops.h>
  #include <linux/kernel.h>
  #include <linux/moduleparam.h>

@@ -2347,12 +2348,21 @@ static const struct of_device_id 

etm4_sysreg_match[] = {
      {}
  };
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id etm4x_acpi_ids[] = {
+    {"ARMHC500", 0}, /* ARM CoreSight ETM4x */
+    {}
+};
+MODULE_DEVICE_TABLE(acpi, etm4x_acpi_ids);
+#endif
+
  static struct platform_driver etm4_platform_driver = {
      .probe        = etm4_probe_platform_dev,
      .remove        = etm4_remove_platform_dev,
      .driver            = {
          .name            = "coresight-etm4x",
          .of_match_table        = etm4_sysreg_match,
+        .acpi_match_table    = ACPI_PTR(etm4x_acpi_ids),
          .suppress_bind_attrs    = true,
          .pm            = &etm4_dev_pm_ops,
      },

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