From: <ricky_wu@realtek.com>
To: <arnd@arndb.de>, <gregkh@linuxfoundation.org>,
<ricky_wu@realtek.com>, <yuehaibing@huawei.com>,
<ulf.hansson@linaro.org>, <bhelgaas@google.com>,
<linux-kernel@vger.kernel.org>
Cc: <stable@vger.kernel.org>
Subject: [PATCH v2] misc: rtsx: init of rts522a add OCP power off when no card is present
Date: Thu, 4 Feb 2021 16:31:15 +0800 [thread overview]
Message-ID: <20210204083115.9471-1-ricky_wu@realtek.com> (raw)
From: Ricky Wu <ricky_wu@realtek.com>
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>
---
v2: update the subject line and description
---
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);
--
2.17.1
reply other threads:[~2021-02-04 8:32 UTC|newest]
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