mfd: rtsx: Clear hardware PFM mode in rtl8411b

Clear hw_pfm_en to disable hardware PFM mode, to fix a bug that in some
situation registers in 0xFDxx domain can't be accessed.
Signed-off-by: NWei WANG <wei_wang@realsil.com.cn>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

drivers/mfd/rtl8411.c

@@ -114,6 +114,8 @@ static int rtl8411b_extra_init_hw(struct rtsx_pcr *pcr)
 			0xFF, pcr->sd30_drive_sel_3v3);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
 			CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, FUNC_FORCE_CTL,
+			0x06, 0x00);
 
 	return rtsx_pci_send_cmd(pcr, 100);
 }

include/linux/mfd/rtsx_pci.h

@@ -687,6 +687,7 @@
 #define PME_FORCE_CTL			0xFE56
 #define ASPM_FORCE_CTL			0xFE57
 #define PM_CLK_FORCE_CTL		0xFE58
+#define FUNC_FORCE_CTL			0xFE59
 #define PERST_GLITCH_WIDTH		0xFE5C
 #define CHANGE_LINK_STATE		0xFE5B
 #define RESET_LOAD_REG			0xFE5E