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misc: rtsx: modify en/disable aspm function

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enable/disable device ASPM function:
changed write ASPM configuration directly to use write register

Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20201202063124.18262-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ricky Wu 2020-12-02 14:31:24 +08:00 committed by Greg Kroah-Hartman
parent 31dcb6c30a
commit d928061c31
1 changed files with 9 additions and 3 deletions
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12
drivers/misc/cardreader/rtsx_pcr.c
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@ -89,9 +89,15 @@ static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable)
if (pcr->aspm_enabled == enable)
return;
pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
PCI_EXP_LNKCTL_ASPMC,
enable ? pcr->aspm_en : 0);
if (pcr->aspm_en & 0x02)
rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
FORCE_ASPM_CTL1, enable ? 0 : FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
else
rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
FORCE_ASPM_CTL1, FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
if (!enable && (pcr->aspm_en & 0x02))
mdelay(10);
pcr->aspm_enabled = enable;
}