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From: Richard Zhu <hongxing.zhu@nxp.com>
To: l.stach@pengutronix.de, bhelgaas@google.com, robh+dt@kernel.org,
	broonie@kernel.org, lorenzo.pieralisi@arm.com,
	festevam@gmail.com, francesco.dolcini@toradex.com
Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kernel@pengutronix.de,
	linux-imx@nxp.com
Subject: [PATCH v15 16/17] PCI: imx6: Move the imx6_pcie_ltssm_disable() earlier
Date: Thu, 14 Jul 2022 15:31:08 +0800	[thread overview]
Message-ID: <1657783869-19194-17-git-send-email-hongxing.zhu@nxp.com> (raw)
In-Reply-To: <1657783869-19194-1-git-send-email-hongxing.zhu@nxp.com>

Move the imx6_pcie_ltssm_disable() earlier and place it just behind the
imx6_pcie_ltssm_enable(), since it might not be only used by suspend
callback directly.

To be symmetric with imx6_pcie_ltssm_enable(), add the IMX6Q and IMX8MQ
switch cases in imx6_pcie_ltssm_disable().

Link: https://lore.kernel.org/r/1656645935-1370-17-git-send-email-hongxing.zhu@nxp.com
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 38 +++++++++++++--------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 6d7ae141ec58..21e9101f63f0 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -805,6 +805,25 @@ static void imx6_pcie_ltssm_enable(struct device *dev)
 	}
 }
 
+static void imx6_pcie_ltssm_disable(struct device *dev)
+{
+	struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev);
+
+	switch (imx6_pcie->drvdata->variant) {
+	case IMX6Q:
+	case IMX6SX:
+	case IMX6QP:
+		regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
+				   IMX6Q_GPR12_PCIE_CTL_2, 0);
+		break;
+	case IMX7D:
+	case IMX8MQ:
+	case IMX8MM:
+		reset_control_assert(imx6_pcie->apps_reset);
+		break;
+	}
+}
+
 static int imx6_pcie_start_link(struct dw_pcie *pci)
 {
 	struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci);
@@ -949,25 +968,6 @@ static const struct dw_pcie_ops dw_pcie_ops = {
 };
 
 #ifdef CONFIG_PM_SLEEP
-static void imx6_pcie_ltssm_disable(struct device *dev)
-{
-	struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev);
-
-	switch (imx6_pcie->drvdata->variant) {
-	case IMX6SX:
-	case IMX6QP:
-		regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
-				   IMX6Q_GPR12_PCIE_CTL_2, 0);
-		break;
-	case IMX7D:
-	case IMX8MM:
-		reset_control_assert(imx6_pcie->apps_reset);
-		break;
-	default:
-		dev_err(dev, "ltssm_disable not supported\n");
-	}
-}
-
 static void imx6_pcie_pm_turnoff(struct imx6_pcie *imx6_pcie)
 {
 	struct device *dev = imx6_pcie->pci->dev;
-- 
2.25.1


  parent reply	other threads:[~2022-07-14  7:48 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-14  7:30 [PATCH v15 0/17] PCI: imx6: refine codes and add the error propagation Richard Zhu
2022-07-14  7:30 ` [PATCH v15 01/17] PCI: imx6: Move imx6_pcie_grp_offset(), imx6_pcie_configure_type() earlier Richard Zhu
2022-07-14  7:30 ` [PATCH v15 02/17] PCI: imx6: Move PHY management functions together Richard Zhu
2022-07-14  7:30 ` [PATCH v15 03/17] PCI: imx6: Move imx6_pcie_enable_ref_clk() earlier Richard Zhu
2022-07-14  7:30 ` [PATCH v15 04/17] PCI: imx6: Move imx6_pcie_clk_disable() earlier Richard Zhu
2022-07-14  7:30 ` [PATCH v15 05/17] PCI: imx6: Factor out ref clock disable to match enable Richard Zhu
2022-07-14  7:30 ` [PATCH v15 06/17] PCI: imx6: Collect clock enables in imx6_pcie_clk_enable() Richard Zhu
2022-07-14  7:30 ` [PATCH v15 07/17] PCI: imx6: Propagate .host_init() errors to caller Richard Zhu
2022-07-14  7:31 ` [PATCH v15 08/17] PCI: imx6: Disable i.MX6QDL clock when disabling ref clocks Richard Zhu
2022-07-14  7:31 ` [PATCH v15 09/17] PCI: imx6: Call host init function directly in resume Richard Zhu
2022-07-14  7:31 ` [PATCH v15 10/17] PCI: imx6: Turn off regulator when system is in suspend mode Richard Zhu
2022-07-14  7:31 ` [PATCH v15 11/17] PCI: imx6: Move regulator enable out of imx6_pcie_deassert_core_reset() Richard Zhu
2022-07-14  7:31 ` [PATCH v15 12/17] PCI: imx6: Mark the link down as non-fatal error Richard Zhu
2022-07-14  7:31 ` [PATCH v15 13/17] PCI: imx6: Reduce resume time by only starting link if it was up before suspend Richard Zhu
2022-07-14  7:31 ` [PATCH v15 14/17] PCI: imx6: Do not hide PHY driver callbacks and refine the error handling Richard Zhu
2022-07-14  7:31 ` [PATCH v15 15/17] PCI: imx6: Disable clocks in reverse order of enable Richard Zhu
2022-07-14  7:31 ` Richard Zhu [this message]
2022-07-14  7:31 ` [PATCH v15 17/17] PCI: imx6: Reformat suspend callback to keep symmetric with resume Richard Zhu
2022-07-18 13:19   ` Guenter Roeck
2022-07-19 23:10     ` Bjorn Helgaas
2022-07-14 17:10 ` [PATCH v15 0/17] PCI: imx6: refine codes and add the error propagation Bjorn Helgaas

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