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platform/x86/amd/pmf: Fix to Update HPD Data When ALS is Disabled

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BugLink: https://bugs.launchpad.net/bugs/2083794

[ Upstream commit 78296429e20052b029211b0aca64aadc5052d581 ]

If the Ambient Light Sensor (ALS) is disabled, the current code in the PMF
driver does not query for Human Presence Detection (HPD) data in
amd_pmf_get_sensor_info(). As a result, stale HPD data is used by PMF-TA
to evaluate policy conditions, leading to unexpected behavior in the policy
output actions.

To resolve this issue, modify the PMF driver to query HPD data
independently of ALS.

Since user_present is a boolean, modify the current code to return true if
the user is present and false if the user is away or if the sensor is not
detected, and report this status to the PMF TA firmware accordingly.

With this change, amd_pmf_get_sensor_info() now returns void instead of
int.

Fixes: cedecdba60 ("platform/x86/amd/pmf: Get ambient light information from AMD SFH driver")
Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20240730142316.3846259-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Shyam Sundar S K
2024-07-30 19:53:16 +05:30
committed by Mehmet Basaran
parent 035c08ff6c
commit b67f7bd23d
1 changed files with 11 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/platform/x86/amd/pmf/spc.c
+11 -21
View File
@@ -150,36 +150,26 @@ static int amd_pmf_get_slider_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_
return 0;
}
static int amd_pmf_get_sensor_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
static void amd_pmf_get_sensor_info(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)
{
struct amd_sfh_info sfh_info;
int ret;
/* Get the latest information from SFH */
in->ev_info.user_present = false;
/* Get ALS data */
ret = amd_get_sfh_info(&sfh_info, MT_ALS);
if (!ret)
if (!amd_get_sfh_info(&sfh_info, MT_ALS))
in->ev_info.ambient_light = sfh_info.ambient_light;
else
return ret;
dev_dbg(dev->dev, "ALS is not enabled/detected\n");
/* get HPD data */
ret = amd_get_sfh_info(&sfh_info, MT_HPD);
if (ret)
return ret;
switch (sfh_info.user_present) {
case SFH_NOT_DETECTED:
in->ev_info.user_present = 0xff; /* assume no sensors connected */
break;
case SFH_USER_PRESENT:
in->ev_info.user_present = 1;
break;
case SFH_USER_AWAY:
in->ev_info.user_present = 0;
break;
if (!amd_get_sfh_info(&sfh_info, MT_HPD)) {
if (sfh_info.user_present == SFH_USER_PRESENT)
in->ev_info.user_present = true;
} else {
dev_dbg(dev->dev, "HPD is not enabled/detected\n");
}
return 0;
}
void amd_pmf_populate_ta_inputs(struct amd_pmf_dev *dev, struct ta_pmf_enact_table *in)