[PATCH v4 05/15] PCI: imx6: Simplify ltssm_enable() by using ltssm_off and ltssm_mask
From: Frank Li <Frank.Li@nxp.com>
Date: 2023-12-17 05:13:03
Also in:
imx, linux-devicetree, linux-pci, lkml
Subsystem:
pci driver for imx6, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Richard Zhu, Lucas Stach, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
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>
---
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 7145947e21d92..79d892836a24d 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 = {IMX6_CLKS_NO_PHYDRV}, + .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 = {IMX6_CLKS_NO_PHYDRV, "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 = {IMX6_CLKS_NO_PHYDRV}, + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX7D] = { .variant = IMX7D,
--
2.34.1
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