From: Ricky Wu Date: Thu, 4 Feb 2021 08:31:15 +0000 (+0800) Subject: misc: rtsx: init of rts522a add OCP power off when no card is present X-Git-Tag: v4.19.178~45 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=83494054fd635d21936ed112a96a1d9cbc0472d2;p=thirdparty%2Fkernel%2Fstable.git misc: rtsx: init of rts522a add OCP power off when no card is present commit 920fd8a70619074eac7687352c8f1c6f3c2a64a5 upstream. Power down OCP for power consumption when no SD/MMC card is present Cc: stable@vger.kernel.org Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20210204083115.9471-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/misc/cardreader/rts5227.c b/drivers/misc/cardreader/rts5227.c index f0e845c8e6a76..d3ce9fe08eafb 100644 --- a/drivers/misc/cardreader/rts5227.c +++ b/drivers/misc/cardreader/rts5227.c @@ -339,6 +339,11 @@ 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);