diff options
| author | Basavaraj Natikar <Basavaraj.Natikar@amd.com> | 2021-08-02 19:33:40 +0530 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2021-08-20 14:48:49 +0200 |
| commit | 0873d1afacd2167e717ea751fe7274011cb4c26a (patch) | |
| tree | ae26ea2b73461e1a757b05ae5986e44ee2902c48 /drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | |
| parent | ac15e9196f35d88b4d94bbcf3a5294ebb5622eb0 (diff) | |
| download | linux-0873d1afacd2167e717ea751fe7274011cb4c26a.tar.bz2 | |
HID: amd_sfh: Add support for PM suspend and resume
Add support for power management routines.
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/amd-sfh-hid/amd_sfh_pcie.c')
| -rw-r--r-- | drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 49 |
1 files changed, 49 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 eff61e739ec2..7eb5971db03e 100644 --- a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c +++ b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c @@ -264,6 +264,54 @@ static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i return amd_sfh_hid_client_init(privdata); } +static int __maybe_unused amd_mp2_pci_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct amd_mp2_dev *mp2 = pci_get_drvdata(pdev); + struct amdtp_cl_data *cl_data = mp2->cl_data; + struct amd_mp2_sensor_info info; + int i, status; + + for (i = 0; i < cl_data->num_hid_devices; i++) { + if (cl_data->sensor_sts[i] == SENSOR_DISABLED) { + info.period = AMD_SFH_IDLE_LOOP; + info.sensor_idx = cl_data->sensor_idx[i]; + info.dma_address = cl_data->sensor_dma_addr[i]; + mp2->mp2_ops->start(mp2, info); + status = amd_sfh_wait_for_response + (mp2, cl_data->sensor_idx[i], SENSOR_ENABLED); + if (status == SENSOR_ENABLED) + cl_data->sensor_sts[i] = SENSOR_ENABLED; + } + } + + return 0; +} + +static int __maybe_unused amd_mp2_pci_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct amd_mp2_dev *mp2 = pci_get_drvdata(pdev); + struct amdtp_cl_data *cl_data = mp2->cl_data; + int i, status; + + for (i = 0; i < cl_data->num_hid_devices; i++) { + if (cl_data->sensor_idx[i] != HPD_IDX && + cl_data->sensor_sts[i] == SENSOR_ENABLED) { + mp2->mp2_ops->stop(mp2, cl_data->sensor_idx[i]); + status = amd_sfh_wait_for_response + (mp2, cl_data->sensor_idx[i], SENSOR_DISABLED); + if (status != SENSOR_ENABLED) + cl_data->sensor_sts[i] = SENSOR_DISABLED; + } + } + + return 0; +} + +static SIMPLE_DEV_PM_OPS(amd_mp2_pm_ops, amd_mp2_pci_suspend, + amd_mp2_pci_resume); + static const struct pci_device_id amd_mp2_pci_tbl[] = { { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_MP2) }, { } @@ -274,6 +322,7 @@ static struct pci_driver amd_mp2_pci_driver = { .name = DRIVER_NAME, .id_table = amd_mp2_pci_tbl, .probe = amd_mp2_pci_probe, + .driver.pm = &amd_mp2_pm_ops, }; module_pci_driver(amd_mp2_pci_driver); |