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From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: linux-pci@vger.kernel.org, "Bjorn Helgaas" <helgaas@kernel.org>,
	"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Lukas Wunner" <lukas@wunner.de>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	"Heiner Kallweit" <hkallweit1@gmail.com>,
	"Emmanuel Grumbach" <emmanuel.grumbach@intel.com>,
	linux-kernel@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
Cc: ath10k@lists.infradead.org, ath11k@lists.infradead.org,
	ath12k@lists.infradead.org, intel-wired-lan@lists.osuosl.org,
	linux-arm-kernel@lists.infradead.org,
	linux-bluetooth@vger.kernel.org,
	linux-mediatek@lists.infradead.org, linux-rdma@vger.kernel.org,
	linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
	"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Subject: [PATCH v2 13/13] misc: rtsx: Use pci_disable/enable_link_state()
Date: Mon, 18 Sep 2023 16:11:03 +0300	[thread overview]
Message-ID: <20230918131103.24119-14-ilpo.jarvinen@linux.intel.com> (raw)
In-Reply-To: <20230918131103.24119-1-ilpo.jarvinen@linux.intel.com>

rtsx driver adjusts ASPM state itself which leaves ASPM service
driver in PCI core unaware of the link state changes the driver
implemented.

Call pci_disable_link_state() and pci_enable_link_state() instead of
adjusting ASPMC field in LNKCTL directly in the driver and let PCI core
handle the ASPM state management.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/misc/cardreader/rts5228.c  | 6 ++----
 drivers/misc/cardreader/rts5261.c  | 6 ++----
 drivers/misc/cardreader/rtsx_pcr.c | 8 +++++---
 3 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/misc/cardreader/rts5228.c b/drivers/misc/cardreader/rts5228.c
index f4ab09439da7..8d3216c64ad1 100644
--- a/drivers/misc/cardreader/rts5228.c
+++ b/drivers/misc/cardreader/rts5228.c
@@ -497,8 +497,7 @@ static void rts5228_enable_aspm(struct rtsx_pcr *pcr, bool enable)
 	val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
 	val |= (pcr->aspm_en & 0x02);
 	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
-	pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
-					   PCI_EXP_LNKCTL_ASPMC, pcr->aspm_en);
+	pci_enable_link_state(pcr->pci, pcr->aspm_en);
 	pcr->aspm_enabled = enable;
 }
 
@@ -509,8 +508,7 @@ static void rts5228_disable_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, 0);
+	pci_disable_link_state(pcr->pci, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
 	mask = FORCE_ASPM_VAL_MASK | FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
 	val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1;
 	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
diff --git a/drivers/misc/cardreader/rts5261.c b/drivers/misc/cardreader/rts5261.c
index 94af6bf8a25a..f1ef15683a2f 100644
--- a/drivers/misc/cardreader/rts5261.c
+++ b/drivers/misc/cardreader/rts5261.c
@@ -578,8 +578,7 @@ static void rts5261_enable_aspm(struct rtsx_pcr *pcr, bool enable)
 
 	val |= (pcr->aspm_en & 0x02);
 	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
-	pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
-					   PCI_EXP_LNKCTL_ASPMC, pcr->aspm_en);
+	pci_enable_link_state(pcr->pci, pcr->aspm_en);
 	pcr->aspm_enabled = enable;
 }
 
@@ -591,8 +590,7 @@ static void rts5261_disable_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, 0);
+	pci_disable_link_state(pcr->pci, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
 	rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, mask, val);
 	rtsx_pci_write_register(pcr, SD_CFG1, SD_ASYNC_FIFO_NOT_RST, 0);
 	udelay(10);
diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c
index a3f4b52bb159..6efb792152f2 100644
--- a/drivers/misc/cardreader/rtsx_pcr.c
+++ b/drivers/misc/cardreader/rtsx_pcr.c
@@ -86,9 +86,11 @@ static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable)
 		return;
 
 	if (pcr->aspm_mode == ASPM_MODE_CFG) {
-		pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
-						PCI_EXP_LNKCTL_ASPMC,
-						enable ? pcr->aspm_en : 0);
+		if (enable)
+			pci_enable_link_state(pcr->pci, pcr->aspm_en);
+		else
+			pci_disable_link_state(pcr->pci, PCIE_LINK_STATE_L0S |
+							 PCIE_LINK_STATE_L1);
 	} else if (pcr->aspm_mode == ASPM_MODE_REG) {
 		if (pcr->aspm_en & 0x02)
 			rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
-- 
2.30.2


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      parent reply	other threads:[~2023-09-18 13:21 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-18 13:10 [PATCH v2 00/13] PCI/ASPM: Make ASPM in core robust and remove driver workarounds Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 01/13] PCI/ASPM: Rename pci_enable_link_state() to pci_set_default_link_state() Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 02/13] PCI/ASPM: Improve pci_set_default_link_state() kerneldoc Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 03/13] PCI/ASPM: Disable ASPM when driver requests it Ilpo Järvinen
2023-10-11 20:04   ` Bjorn Helgaas
2023-10-12 10:47     ` Ilpo Järvinen
2023-10-11 21:22   ` Bjorn Helgaas
2023-10-12 10:56     ` Ilpo Järvinen
2023-10-13 16:42       ` Bjorn Helgaas
2023-10-16 14:27         ` Ilpo Järvinen
2023-10-26 22:02           ` Bjorn Helgaas
2023-09-18 13:10 ` [PATCH v2 04/13] PCI/ASPM: Move L0S/L1/sub states mask calculation into a helper Ilpo Järvinen
2023-10-11 19:32   ` Bjorn Helgaas
2023-10-12 10:29     ` Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 05/13] PCI/ASPM: Add pci_enable_link_state() Ilpo Järvinen
2023-10-11 21:53   ` Bjorn Helgaas
2023-10-12 12:53     ` Ilpo Järvinen
2023-10-13 16:48       ` Bjorn Helgaas
2023-10-16 12:57         ` Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 06/13] Bluetooth: hci_bcm4377: Convert aspm disable to quirk Ilpo Järvinen
2023-09-19 13:36   ` Sven Peter
2023-09-18 13:10 ` [PATCH v2 07/13] mt76: Remove unreliable pci_disable_link_state() workaround Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 08/13] e1000e: Remove unreliable pci_disable_link_state{,_locked}() workaround Ilpo Järvinen
2023-09-18 13:10 ` [PATCH v2 09/13] wifi: ath10k: Use pci_disable/enable_link_state() Ilpo Järvinen
2023-09-19  9:39   ` Kalle Valo
2023-09-18 13:11 ` [PATCH v2 10/13] wifi: ath11k: " Ilpo Järvinen
2023-09-19  9:40   ` Kalle Valo
2023-09-18 13:11 ` [PATCH v2 11/13] wifi: ath12k: " Ilpo Järvinen
2023-09-19  9:40   ` Kalle Valo
2023-09-18 13:11 ` [PATCH v2 12/13] RDMA/hfi1: " Ilpo Järvinen
2023-09-18 13:11 ` Ilpo Järvinen [this message]

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