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path: root/drivers/pci/dwc/pcie-qcom.c
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Diffstat (limited to 'drivers/pci/dwc/pcie-qcom.c')
-rw-r--r--drivers/pci/dwc/pcie-qcom.c70
1 files changed, 45 insertions, 25 deletions
diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/dwc/pcie-qcom.c
index ac27b67d303e..e36abe0d9d6f 100644
--- a/drivers/pci/dwc/pcie-qcom.c
+++ b/drivers/pci/dwc/pcie-qcom.c
@@ -103,7 +103,7 @@ struct qcom_pcie_ops {
};
struct qcom_pcie {
- struct pcie_port pp; /* pp.dbi_base is DT dbi */
+ struct dw_pcie *pci;
void __iomem *parf; /* DT parf */
void __iomem *elbi; /* DT elbi */
union qcom_pcie_resources res;
@@ -112,7 +112,7 @@ struct qcom_pcie {
struct qcom_pcie_ops *ops;
};
-#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
+#define to_qcom_pcie(x) dev_get_drvdata((x)->dev)
static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
{
@@ -155,21 +155,23 @@ static void qcom_pcie_v2_ltssm_enable(struct qcom_pcie *pcie)
static int qcom_pcie_establish_link(struct qcom_pcie *pcie)
{
+ struct dw_pcie *pci = pcie->pci;
- if (dw_pcie_link_up(&pcie->pp))
+ if (dw_pcie_link_up(pci))
return 0;
/* Enable Link Training state machine */
if (pcie->ops->ltssm_enable)
pcie->ops->ltssm_enable(pcie);
- return dw_pcie_wait_for_link(&pcie->pp);
+ return dw_pcie_wait_for_link(pci);
}
static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
res->vdda = devm_regulator_get(dev, "vdda");
if (IS_ERR(res->vdda))
@@ -218,7 +220,8 @@ static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
res->vdda = devm_regulator_get(dev, "vdda");
if (IS_ERR(res->vdda))
@@ -264,7 +267,8 @@ static void qcom_pcie_deinit_v0(struct qcom_pcie *pcie)
static int qcom_pcie_init_v0(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
u32 val;
int ret;
@@ -386,7 +390,8 @@ static void qcom_pcie_deinit_v1(struct qcom_pcie *pcie)
static int qcom_pcie_init_v1(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
int ret;
ret = reset_control_deassert(res->core);
@@ -453,7 +458,8 @@ err_res:
static int qcom_pcie_get_resources_v2(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
res->aux_clk = devm_clk_get(dev, "aux");
if (IS_ERR(res->aux_clk))
@@ -478,7 +484,8 @@ static int qcom_pcie_get_resources_v2(struct qcom_pcie *pcie)
static int qcom_pcie_init_v2(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
u32 val;
int ret;
@@ -542,7 +549,8 @@ err_cfg_clk:
static int qcom_pcie_post_init_v2(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_v2 *res = &pcie->res.v2;
- struct device *dev = pcie->pp.dev;
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
int ret;
ret = clk_prepare_enable(res->pipe_clk);
@@ -554,10 +562,9 @@ static int qcom_pcie_post_init_v2(struct qcom_pcie *pcie)
return 0;
}
-static int qcom_pcie_link_up(struct pcie_port *pp)
+static int qcom_pcie_link_up(struct dw_pcie *pci)
{
- struct qcom_pcie *pcie = to_qcom_pcie(pp);
- u16 val = readw(pcie->pp.dbi_base + PCIE20_CAP + PCI_EXP_LNKSTA);
+ u16 val = readw(pci->dbi_base + PCIE20_CAP + PCI_EXP_LNKSTA);
return !!(val & PCI_EXP_LNKSTA_DLLLA);
}
@@ -575,7 +582,8 @@ static void qcom_pcie_deinit_v2(struct qcom_pcie *pcie)
static void qcom_pcie_host_init(struct pcie_port *pp)
{
- struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
+ struct qcom_pcie *pcie = to_qcom_pcie(pci);
int ret;
qcom_ep_reset_assert(pcie);
@@ -613,19 +621,20 @@ err_deinit:
static int qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
u32 *val)
{
+ struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
+
/* the device class is not reported correctly from the register */
if (where == PCI_CLASS_REVISION && size == 4) {
- *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
+ *val = readl(pci->dbi_base + PCI_CLASS_REVISION);
*val &= 0xff; /* keep revision id */
*val |= PCI_CLASS_BRIDGE_PCI << 16;
return PCIBIOS_SUCCESSFUL;
}
- return dw_pcie_read(pp->dbi_base + where, size, val);
+ return dw_pcie_read(pci->dbi_base + where, size, val);
}
-static struct pcie_host_ops qcom_pcie_dw_ops = {
- .link_up = qcom_pcie_link_up,
+static struct dw_pcie_host_ops qcom_pcie_dw_ops = {
.host_init = qcom_pcie_host_init,
.rd_own_conf = qcom_pcie_rd_own_conf,
};
@@ -652,19 +661,31 @@ static const struct qcom_pcie_ops ops_v2 = {
.ltssm_enable = qcom_pcie_v2_ltssm_enable,
};
+static const struct dw_pcie_ops dw_pcie_ops = {
+ .link_up = qcom_pcie_link_up,
+};
+
static int qcom_pcie_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
- struct qcom_pcie *pcie;
struct pcie_port *pp;
+ struct dw_pcie *pci;
+ struct qcom_pcie *pcie;
int ret;
pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
if (!pcie)
return -ENOMEM;
- pp = &pcie->pp;
+ pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
+ if (!pci)
+ return -ENOMEM;
+
+ pci->dev = dev;
+ pci->ops = &dw_pcie_ops;
+ pp = &pci->pp;
+
pcie->ops = (struct qcom_pcie_ops *)of_device_get_match_data(dev);
pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_LOW);
@@ -677,9 +698,9 @@ static int qcom_pcie_probe(struct platform_device *pdev)
return PTR_ERR(pcie->parf);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
- pp->dbi_base = devm_ioremap_resource(dev, res);
- if (IS_ERR(pp->dbi_base))
- return PTR_ERR(pp->dbi_base);
+ pci->dbi_base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pci->dbi_base))
+ return PTR_ERR(pci->dbi_base);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
pcie->elbi = devm_ioremap_resource(dev, res);
@@ -690,7 +711,6 @@ static int qcom_pcie_probe(struct platform_device *pdev)
if (IS_ERR(pcie->phy))
return PTR_ERR(pcie->phy);
- pp->dev = dev;
ret = pcie->ops->get_resources(pcie);
if (ret)
return ret;
generated by cgit (git 2.34.1) at 2024-06-04 17:13:39 +0000