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);