From 920fd8a70619074eac7687352c8f1c6f3c2a64a5 Mon Sep 17 00:00:00 2001
From: Ricky Wu <ricky_wu@realtek.com>
Date: Thu, 4 Feb 2021 16:31:15 +0800
Subject: [PATCH] misc: rtsx: init of rts522a add OCP power off when no card is present
Git-commit: 920fd8a70619074eac7687352c8f1c6f3c2a64a5
Patch-mainline: v5.12-rc1
References: git-fixes
Power down OCP for power consumption
when no SD/MMC card is present
Cc: stable@vger.kernel.org
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20210204083115.9471-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/misc/cardreader/rts5227.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/misc/cardreader/rts5227.c b/drivers/misc/cardreader/rts5227.c
index 8859011672cb..8200af22b529 100644
--- a/drivers/misc/cardreader/rts5227.c
+++ b/drivers/misc/cardreader/rts5227.c
@@ -398,6 +398,11 @@ static int rts522a_extra_init_hw(struct rtsx_pcr *pcr)
{
rts5227_extra_init_hw(pcr);
+ /* Power down OCP for power consumption */
+ if (!pcr->card_exist)
+ rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN,
+ OC_POWER_DOWN);
+
rtsx_pci_write_register(pcr, FUNC_FORCE_CTL, FUNC_FORCE_UPME_XMT_DBG,
FUNC_FORCE_UPME_XMT_DBG);
rtsx_pci_write_register(pcr, PCLK_CTL, 0x04, 0x04);
--
2.26.2