hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PCI: imx6: Introduce drvdata 

Introduce driver data struct. This will simplify handling of device
specific differences.

Signed-off-by: Stefan Agner <stefan@agner.ch>
[andrew.smirnov@gmail.com reformatted drvdata, to simplify future diffs]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
This commit is contained in:
Andrey Smirnov 2019-02-01 16:15:20 -08:00 committed by Lorenzo Pieralisi
parent 657722570a
commit e8e4d4e957
1 changed files with 37 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/pci/controller/dwc/pci-imx6.c
View File

@ -41,6 +41,10 @@ enum imx6_pcie_variants {
IMX7D, IMX7D,
}; };
struct imx6_pcie_drvdata {
enum imx6_pcie_variants variant;
};
struct imx6_pcie { struct imx6_pcie {
struct dw_pcie *pci; struct dw_pcie *pci;
int reset_gpio; int reset_gpio;
@ -53,7 +57,6 @@ struct imx6_pcie {
struct reset_control *pciephy_reset; struct reset_control *pciephy_reset;
struct reset_control *apps_reset; struct reset_control *apps_reset;
struct reset_control *turnoff_reset; struct reset_control *turnoff_reset;
enum imx6_pcie_variants variant;
u32 tx_deemph_gen1; u32 tx_deemph_gen1;
u32 tx_deemph_gen2_3p5db; u32 tx_deemph_gen2_3p5db;
u32 tx_deemph_gen2_6db; u32 tx_deemph_gen2_6db;
@ -66,6 +69,7 @@ struct imx6_pcie {
struct device *pd_pcie; struct device *pd_pcie;
/* power domain for pcie phy */ /* power domain for pcie phy */
struct device *pd_pcie_phy; struct device *pd_pcie_phy;
const struct imx6_pcie_drvdata *drvdata;
}; };
/* Parameters for the waiting for PCIe PHY PLL to lock on i.MX7 */ /* Parameters for the waiting for PCIe PHY PLL to lock on i.MX7 */
@ -339,7 +343,7 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie)
{ {
struct device *dev = imx6_pcie->pci->dev; struct device *dev = imx6_pcie->pci->dev;
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX7D: case IMX7D:
reset_control_assert(imx6_pcie->pciephy_reset); reset_control_assert(imx6_pcie->pciephy_reset);
reset_control_assert(imx6_pcie->apps_reset); reset_control_assert(imx6_pcie->apps_reset);
@ -381,7 +385,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie)
struct device *dev = pci->dev; struct device *dev = pci->dev;
int ret = 0; int ret = 0;
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX6SX: case IMX6SX:
ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi); ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi);
if (ret) { if (ret) {
@ -484,7 +488,7 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
!imx6_pcie->gpio_active_high); !imx6_pcie->gpio_active_high);
} }
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX7D: case IMX7D:
reset_control_deassert(imx6_pcie->pciephy_reset); reset_control_deassert(imx6_pcie->pciephy_reset);
imx7d_pcie_wait_for_phy_pll_lock(imx6_pcie); imx7d_pcie_wait_for_phy_pll_lock(imx6_pcie);
@ -522,7 +526,7 @@ err_pcie_phy:
static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie) static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie)
{ {
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX7D: case IMX7D:
regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0); IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0);
@ -644,7 +648,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev)
{ {
struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev);
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX6Q: case IMX6Q:
case IMX6SX: case IMX6SX:
case IMX6QP: case IMX6QP:
@ -697,7 +701,7 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie)
tmp |= PORT_LOGIC_SPEED_CHANGE; tmp |= PORT_LOGIC_SPEED_CHANGE;
dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp); dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp);
if (imx6_pcie->variant != IMX7D) { if (imx6_pcie->drvdata->variant != IMX7D) {
/* /*
* On i.MX7, DIRECT_SPEED_CHANGE behaves differently * On i.MX7, DIRECT_SPEED_CHANGE behaves differently
* from i.MX6 family when no link speed transition * from i.MX6 family when no link speed transition
@ -794,7 +798,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev)
{ {
struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev);
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX6SX: case IMX6SX:
case IMX6QP: case IMX6QP:
regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
@ -820,7 +824,7 @@ static void imx6_pcie_pm_turnoff(struct imx6_pcie *imx6_pcie)
} }
/* Others poke directly at IOMUXC registers */ /* Others poke directly at IOMUXC registers */
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX6SX: case IMX6SX:
regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
IMX6SX_GPR12_PCIE_PM_TURN_OFF, IMX6SX_GPR12_PCIE_PM_TURN_OFF,
@ -850,7 +854,7 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
clk_disable_unprepare(imx6_pcie->pcie_phy); clk_disable_unprepare(imx6_pcie->pcie_phy);
clk_disable_unprepare(imx6_pcie->pcie_bus); clk_disable_unprepare(imx6_pcie->pcie_bus);
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX6SX: case IMX6SX:
clk_disable_unprepare(imx6_pcie->pcie_inbound_axi); clk_disable_unprepare(imx6_pcie->pcie_inbound_axi);
break; break;
@ -866,8 +870,8 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
static inline bool imx6_pcie_supports_suspend(struct imx6_pcie *imx6_pcie) static inline bool imx6_pcie_supports_suspend(struct imx6_pcie *imx6_pcie)
{ {
return (imx6_pcie->variant == IMX7D || return (imx6_pcie->drvdata->variant == IMX7D ||
imx6_pcie->variant == IMX6SX); imx6_pcie->drvdata->variant == IMX6SX);
} }
static int imx6_pcie_suspend_noirq(struct device *dev) static int imx6_pcie_suspend_noirq(struct device *dev)
@ -933,8 +937,7 @@ static int imx6_pcie_probe(struct platform_device *pdev)
pci->ops = &dw_pcie_ops; pci->ops = &dw_pcie_ops;
imx6_pcie->pci = pci; imx6_pcie->pci = pci;
imx6_pcie->variant = imx6_pcie->drvdata = of_device_get_match_data(dev);
(enum imx6_pcie_variants)of_device_get_match_data(dev);
dbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0); dbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pci->dbi_base = devm_ioremap_resource(dev, dbi_base); pci->dbi_base = devm_ioremap_resource(dev, dbi_base);
@ -978,7 +981,7 @@ static int imx6_pcie_probe(struct platform_device *pdev)
return PTR_ERR(imx6_pcie->pcie); return PTR_ERR(imx6_pcie->pcie);
} }
switch (imx6_pcie->variant) { switch (imx6_pcie->drvdata->variant) {
case IMX6SX: case IMX6SX:
imx6_pcie->pcie_inbound_axi = devm_clk_get(dev, imx6_pcie->pcie_inbound_axi = devm_clk_get(dev,
"pcie_inbound_axi"); "pcie_inbound_axi");
@ -1084,11 +1087,26 @@ static void imx6_pcie_shutdown(struct platform_device *pdev)
imx6_pcie_assert_core_reset(imx6_pcie); imx6_pcie_assert_core_reset(imx6_pcie);
} }
static const struct imx6_pcie_drvdata drvdata[] = {
[IMX6Q] = {
.variant = IMX6Q,
},
[IMX6SX] = {
.variant = IMX6SX,
},
[IMX6QP] = {
.variant = IMX6QP,
},
[IMX7D] = {
.variant = IMX7D,
},
};
static const struct of_device_id imx6_pcie_of_match[] = { static const struct of_device_id imx6_pcie_of_match[] = {
{ .compatible = "fsl,imx6q-pcie", .data = (void *)IMX6Q, }, { .compatible = "fsl,imx6q-pcie", .data = &drvdata[IMX6Q], },
{ .compatible = "fsl,imx6sx-pcie", .data = (void *)IMX6SX, }, { .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], },
{ .compatible = "fsl,imx6qp-pcie", .data = (void *)IMX6QP, }, { .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], },
{ .compatible = "fsl,imx7d-pcie", .data = (void *)IMX7D, }, { .compatible = "fsl,imx7d-pcie", .data = &drvdata[IMX7D], },
{}, {},
}; };