From: <ricky_wu@realtek.com>
To: <arnd@arndb.de>, <gregkh@linuxfoundation.org>,
<bhelgaas@google.com>, <ricky_wu@realtek.com>,
<vaibhavgupta40@gmail.com>, <kdlnx@doth.eu>,
<keitasuzuki.park@sslab.ics.keio.ac.jp>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v2 1/4] misc: rtsx: modify en/disable aspm function
Date: Wed, 2 Dec 2020 14:31:24 +0800 [thread overview]
Message-ID: <20201202063124.18262-1-ricky_wu@realtek.com> (raw)
From: Ricky Wu <ricky_wu@realtek.com>
enable/disable device ASPM function:
changed write ASPM configuration directly to use write register
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
---
drivers/misc/cardreader/rtsx_pcr.c | 12 +++++++++---
1 file 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;
}
--
2.17.1
reply other threads:[~2020-12-02 6:32 UTC|newest]
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