diff options
Diffstat (limited to 'drivers/thunderbolt/nhi_ops.c')
| -rw-r--r-- | drivers/thunderbolt/nhi_ops.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/drivers/thunderbolt/nhi_ops.c b/drivers/thunderbolt/nhi_ops.c index 28583f9faf46..96da07e88c52 100644 --- a/drivers/thunderbolt/nhi_ops.c +++ b/drivers/thunderbolt/nhi_ops.c @@ -121,31 +121,38 @@ static void icl_nhi_set_ltr(struct tb_nhi *nhi) static int icl_nhi_suspend(struct tb_nhi *nhi) { + struct tb *tb = pci_get_drvdata(nhi->pdev); int ret; if (icl_nhi_is_device_connected(nhi)) return 0; - /* - * If there is no device connected we need to perform both: a - * handshake through LC mailbox and force power down before - * entering D3. - */ - icl_nhi_lc_mailbox_cmd(nhi, ICL_LC_PREPARE_FOR_RESET); - ret = icl_nhi_lc_mailbox_cmd_complete(nhi, ICL_LC_MAILBOX_TIMEOUT); - if (ret) - return ret; + if (tb_switch_is_icm(tb->root_switch)) { + /* + * If there is no device connected we need to perform + * both: a handshake through LC mailbox and force power + * down before entering D3. + */ + icl_nhi_lc_mailbox_cmd(nhi, ICL_LC_PREPARE_FOR_RESET); + ret = icl_nhi_lc_mailbox_cmd_complete(nhi, ICL_LC_MAILBOX_TIMEOUT); + if (ret) + return ret; + } return icl_nhi_force_power(nhi, false); } static int icl_nhi_suspend_noirq(struct tb_nhi *nhi, bool wakeup) { + struct tb *tb = pci_get_drvdata(nhi->pdev); enum icl_lc_mailbox_cmd cmd; if (!pm_suspend_via_firmware()) return icl_nhi_suspend(nhi); + if (!tb_switch_is_icm(tb->root_switch)) + return 0; + cmd = wakeup ? ICL_LC_GO2SX : ICL_LC_GO2SX_NO_WAKE; icl_nhi_lc_mailbox_cmd(nhi, cmd); return icl_nhi_lc_mailbox_cmd_complete(nhi, ICL_LC_MAILBOX_TIMEOUT); |