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Commit 83494054 authored by Ricky Wu's avatar Ricky Wu Committed by Greg Kroah-Hartman
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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: default avatarRicky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20210204083115.9471-1-ricky_wu@realtek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d03e9084

drivers/misc/cardreader/rts5227.c

+5 −0
Original line number Diff line number Diff line
@@ -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);