diff options
Diffstat (limited to 'drivers/hid/amd-sfh-hid/amd_sfh_pcie.c')
| -rw-r--r-- | drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c index 96e2577fa37e..eff61e739ec2 100644 --- a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c +++ b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c @@ -13,6 +13,7 @@ #include <linux/dmi.h> #include <linux/interrupt.h> #include <linux/io-64-nonatomic-lo-hi.h> +#include <linux/iopoll.h> #include <linux/module.h> #include <linux/slab.h> @@ -31,6 +32,20 @@ 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"); +static int amd_sfh_wait_response_v2(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts) +{ + union cmd_response cmd_resp; + + /* Get response with status within a max of 800 ms timeout */ + if (!readl_poll_timeout(mp2->mmio + AMD_P2C_MSG(0), cmd_resp.resp, + (cmd_resp.response_v2.response == sensor_sts && + cmd_resp.response_v2.status == 0 && (sid == 0xff || + cmd_resp.response_v2.sensor_id == sid)), 500, 800000)) + return cmd_resp.response_v2.response; + + return SENSOR_DISABLED; +} + static void amd_start_sensor_v2(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info) { union sfh_cmd_base cmd_base; @@ -183,6 +198,7 @@ static const struct amd_mp2_ops amd_sfh_ops_v2 = { .start = amd_start_sensor_v2, .stop = amd_stop_sensor_v2, .stop_all = amd_stop_all_sensor_v2, + .response = amd_sfh_wait_response_v2, }; static const struct amd_mp2_ops amd_sfh_ops = { |