Re: [PATCH V5 6/6] coresight: etm4x: Add ACPI support in platform driver

[Suzuki K Poulose <suzuki.poulose@xxxxxxx>]

On 14/06/2023 14:52, Suzuki K Poulose wrote:
> On 06/06/2023 10:36, Suzuki K Poulose wrote:
> > Hi Rafael,
> >
> > Gentle ping.
>
> Gentle ping..

Gentle reminder, Rafael.

Suzuki

> > On 30/05/2023 10:57, Suzuki K Poulose wrote:
> > > Hi Rafael
> > >
> > > On 29/05/2023 07:25, Anshuman Khandual wrote:
> > > > From: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> > > >
> > > > 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@xxxxxxxxxx>
> > > > Cc: Len Brown <lenb@xxxxxxxxxx>
> > > > Cc: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
> > > > Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> > > > Cc: Mike Leach <mike.leach@xxxxxxxxxx>
> > > > Cc: Leo Yan <leo.yan@xxxxxxxxxx>
> > > > Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
> > > > Cc: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
> > > > Cc: linux-acpi@xxxxxxxxxxxxxxx
> > > > Cc: coresight@xxxxxxxxxxxxxxxx
> > > > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> > > > Cc: linux-kernel@xxxxxxxxxxxxxxx
> > > > Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxx> (for ACPI specific 
> > > > changes)
> > > > Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
> > > > Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
> > > > ---
> > > >   drivers/acpi/acpi_amba.c                           |  1 -
> > >
> > > We would like to push this via the coresight tree. Please could you 
> > > Ack this change if you are happy with the proposal and the change ?
> >
> >
> > Suzuki
>
> Suzuki
>
>
> > > Suzuki
> > >
> > >
> > > >   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 e10f6676dd9b..fd6f9dff5881 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>
> > > > @@ -2344,12 +2345,21 @@ 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,
> > > >       },