misc: rtsx: modify en/disable aspm function

enable/disable device ASPM function:
changed write ASPM configuration directly to use write register
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20201202063124.18262-1-ricky_wu@realtek.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/cardreader/rtsx_pcr.c

@@ -89,9 +89,15 @@ static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable)
 	if (pcr->aspm_enabled == enable)
 		return;
 
-	pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
-					   PCI_EXP_LNKCTL_ASPMC,
-					   enable ? pcr->aspm_en : 0);
+	if (pcr->aspm_en & 0x02)
+		rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
+			FORCE_ASPM_CTL1, enable ? 0 : FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
+	else
+		rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
+			FORCE_ASPM_CTL1, FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
+
+	if (!enable && (pcr->aspm_en & 0x02))
+		mdelay(10);
 
 	pcr->aspm_enabled = enable;
 }