From: Frank Li <Frank.Li@nxp.com>
To: helgaas@kernel.org, manivannan.sadhasivam@linaro.org
Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org,
devicetree@vger.kernel.org, festevam@gmail.com,
hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de,
krzysztof.kozlowski+dt@linaro.org, kw@linux.com,
l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org,
linux-imx@nxp.com, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org, lpieralisi@kernel.org,
robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org
Subject: [PATCH v2 5/9] PCI: imx6: Simplify ltssm_enable() by using ltssm_off and ltssm_mask
Date: Thu, 7 Dec 2023 14:34:26 -0500 [thread overview]
Message-ID: <20231207193430.431994-6-Frank.Li@nxp.com> (raw)
In-Reply-To: <20231207193430.431994-1-Frank.Li@nxp.com>
Add drvdata::ltssm_off and drvdata::ltssm_mask to simple
imx6_pcie_ltssm_enable(disable)() logic.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
drivers/pci/controller/dwc/pci-imx6.c | 37 ++++++++++++---------------
1 file changed, 16 insertions(+), 21 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 548034151ee1a..5bfb780e441fd 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -75,6 +75,8 @@ struct imx6_pcie_drvdata {
u32 flags;
int dbi_length;
const char *gpr;
+ const u32 ltssm_off;
+ const u32 ltssm_mask;
};
struct imx6_pcie {
@@ -811,18 +813,11 @@ static int imx6_pcie_wait_for_speed_change(struct imx6_pcie *imx6_pcie)
static void imx6_pcie_ltssm_enable(struct device *dev)
{
struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev);
+ const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata;
- 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,
- IMX6Q_GPR12_PCIE_CTL_2);
- break;
- default:
- break;
- }
+ if (drvdata->ltssm_mask)
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->ltssm_off, drvdata->ltssm_mask,
+ drvdata->ltssm_mask);
reset_control_deassert(imx6_pcie->apps_reset);
}
@@ -830,17 +825,11 @@ 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);
+ const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata;
- 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;
- default:
- break;
- }
+ if (drvdata->ltssm_mask)
+ regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->ltssm_off,
+ drvdata->ltssm_mask, 0);
reset_control_assert(imx6_pcie->apps_reset);
}
@@ -1446,6 +1435,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE,
.dbi_length = 0x200,
.gpr = "fsl,imx6q-iomuxc-gpr",
+ .ltssm_off = IOMUXC_GPR12,
+ .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
},
[IMX6SX] = {
.variant = IMX6SX,
@@ -1454,6 +1445,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_SUPPORTS_SUSPEND |
IMX6_PCIE_FLAG_HAS_CLK_INBOUND_AXI,
.gpr = "fsl,imx6q-iomuxc-gpr",
+ .ltssm_off = IOMUXC_GPR12,
+ .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
},
[IMX6QP] = {
.variant = IMX6QP,
@@ -1462,6 +1455,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,
.dbi_length = 0x200,
.gpr = "fsl,imx6q-iomuxc-gpr",
+ .ltssm_off = IOMUXC_GPR12,
+ .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
},
[IMX7D] = {
.variant = IMX7D,
--
2.34.1
next prev parent reply other threads:[~2023-12-07 19:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-07 19:34 [PATCH v2 0/9] PCI: imx6: Clean up and add imx95 pci support Frank Li
2023-12-07 19:34 ` [PATCH v2 1/9] PCI: imx6: Simplify clock handling by using HAS_CLK_* bitmask Frank Li
2023-12-07 19:34 ` [PATCH v2 2/9] PCI: imx6: Simplify phy handling by using by using IMX6_PCIE_FLAG_HAS_PHY Frank Li
2023-12-07 19:34 ` [PATCH v2 3/9] PCI: imx6: Simplify reset handling by using by using *_FLAG_HAS_*_RESET Frank Li
2023-12-07 19:34 ` [PATCH v2 4/9] PCI: imx6: Using "linux,pci-domain" as slot ID Frank Li
2023-12-07 19:34 ` Frank Li [this message]
2023-12-07 19:34 ` [PATCH v2 6/9] PCI: imx6: Simplify configure_type() by using mode_off and mode_mask Frank Li
2023-12-07 19:34 ` [PATCH v2 7/9] PCI: imx6: Simplify switch-case logic by involve init_phy callback Frank Li
2023-12-07 19:34 ` [PATCH v2 8/9] dt-bindings: imx6q-pcie: Add imx95 pcie compatible string Frank Li
2023-12-07 19:34 ` [PATCH v2 9/9] PCI: imx6: Add iMX95 PCIe support Frank Li
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