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| author | Ricky Wu <ricky_wu@realtek.com> | 2020-12-02 14:31:24 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-09 19:41:54 +0100 |
| commit | d928061c3143de36c17650ce7b60760fefb8336c (patch) | |
| tree | 917905b0f8d916a9edaab72a9f6bfb6b1cfa75e9 | |
| parent | 31dcb6c30a26d32650ce134820f27de3c675a45a (diff) | |
| download | lwn-d928061c3143de36c17650ce7b60760fefb8336c.tar.gz lwn-d928061c3143de36c17650ce7b60760fefb8336c.zip | |
misc: rtsx: modify en/disable aspm function
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>
| -rw-r--r-- | drivers/misc/cardreader/rtsx_pcr.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c index 5d15607027e9..c87f791bdcb5 100644 --- a/drivers/misc/cardreader/rtsx_pcr.c +++ b/drivers/misc/cardreader/rtsx_pcr.c @@ -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; } |