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Message-Id: <20231227182727.1747435-7-Frank.Li@nxp.com>
Date: Wed, 27 Dec 2023 13:27:17 -0500
From: Frank Li <Frank.Li@....com>
To: krzysztof.kozlowski@...aro.org
Cc: Frank.Li@....com,
bhelgaas@...gle.com,
conor+dt@...nel.org,
devicetree@...r.kernel.org,
festevam@...il.com,
helgaas@...nel.org,
hongxing.zhu@....com,
imx@...ts.linux.dev,
kernel@...gutronix.de,
krzysztof.kozlowski+dt@...aro.org,
kw@...ux.com,
l.stach@...gutronix.de,
linux-arm-kernel@...ts.infradead.org,
linux-imx@....com,
linux-kernel@...r.kernel.org,
linux-pci@...r.kernel.org,
lpieralisi@...nel.org,
manivannan.sadhasivam@...aro.org,
robh@...nel.org,
s.hauer@...gutronix.de,
shawnguo@...nel.org
Subject: [PATCH v7 06/16] PCI: imx6: Simplify ltssm_enable() by using ltssm_off and ltssm_mask
Add drvdata::ltssm_off and drvdata::ltssm_mask to simple
imx6_pcie_ltssm_enable(disable)() logic.
Signed-off-by: Frank Li <Frank.Li@....com>
---
Notes:
Change from v1 to v3
- none
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 332c392f8e5bc..588bfb616260e 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 {
int dbi_length;
const char *gpr;
const char *clk_names[IMX6_PCIE_MAX_CLKS];
+ const u32 ltssm_off;
+ const u32 ltssm_mask;
};
struct imx6_pcie {
@@ -775,18 +777,11 @@ 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);
}
@@ -794,17 +789,11 @@ 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);
}
@@ -1385,6 +1374,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
.dbi_length = 0x200,
.gpr = "fsl,imx6q-iomuxc-gpr",
.clk_names = {"pcie_bus", "pcie", "pcie_phy"},
+ .ltssm_off = IOMUXC_GPR12,
+ .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
},
[IMX6SX] = {
.variant = IMX6SX,
@@ -1393,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,
.gpr = "fsl,imx6q-iomuxc-gpr",
.clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"},
+ .ltssm_off = IOMUXC_GPR12,
+ .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
},
[IMX6QP] = {
.variant = IMX6QP,
@@ -1402,6 +1395,8 @@ static const struct imx6_pcie_drvdata drvdata[] = {
.dbi_length = 0x200,
.gpr = "fsl,imx6q-iomuxc-gpr",
.clk_names = {"pcie_bus", "pcie", "pcie_phy"},
+ .ltssm_off = IOMUXC_GPR12,
+ .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2,
},
[IMX7D] = {
.variant = IMX7D,
--
2.34.1
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