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AMD_SFH: Add sensor_mask module parameter

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Add a sensor_mask module parameter which can be used to override the
sensor-mask read from the activestatus bits of the AMD_P2C_MSG3
registers. Some BIOS-es do not program the activestatus bits, leading
to the AMD-SFH driver not registering any HID devices even though the
laptop in question does actually have sensors.

While at it also fix the wrong indentation of the MAGNO_EN define.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199715
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1651886
Fixes: 4f567b9f8141 ("SFH: PCIe driver to add support of AMD sensor fusion hub")
Suggested-by: Richard Neumann <mail@richard-neumann.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Sandeep Singh <sandeep.singh@amd.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Hans de Goede 2021-01-28 13:12:18 +01:00 committed by Jiri Kosina
parent a9e54f4b62
commit 952f7d10c6
1 changed files with 11 additions and 3 deletions

14
drivers/hid/amd-sfh-hid/amd_sfh_pcie.c

@ -22,9 +22,13 @@
#define ACEL_EN BIT(0)
#define GYRO_EN BIT(1)
#define MAGNO_EN BIT(2)
#define MAGNO_EN BIT(2)
#define ALS_EN BIT(19)
static int sensor_mask_override = -1;
module_param_named(sensor_mask, sensor_mask_override, int, 0444);
MODULE_PARM_DESC(sensor_mask, "override the detected sensors mask");
void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info)
{
union sfh_cmd_param cmd_param;
@ -78,8 +82,12 @@ int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id)
int activestatus, num_of_sensors = 0;
u32 activecontrolstatus;
activecontrolstatus = readl(privdata->mmio + AMD_P2C_MSG3);
activestatus = activecontrolstatus >> 4;
if (sensor_mask_override >= 0) {
activestatus = sensor_mask_override;
} else {
activecontrolstatus = readl(privdata->mmio + AMD_P2C_MSG3);
activestatus = activecontrolstatus >> 4;
}
if (ACEL_EN & activestatus)
sensor_id[num_of_sensors++] = accel_idx;