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PCI: spear: Pass device-specific struct to internal functions 

Only interfaces used from outside the driver, e.g., those called by the
DesignWare core, need to accept pointers to the generic struct pcie_port.
Internal interfaces can accept pointers to the device-specific struct,
which makes them more straightforward.  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2016-10-06 13:42:08 -05:00
parent ca7b941c90
commit ffe82fa66a
1 changed files with 16 additions and 13 deletions
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29
drivers/pci/host/pcie-spear13xx.c
View File

@ -72,11 +72,11 @@ struct pcie_app_reg {
#define to_spear13xx_pcie(x) container_of(x, struct spear13xx_pcie, pp)
static int spear13xx_pcie_establish_link(struct pcie_port *pp)
static int spear13xx_pcie_establish_link(struct spear13xx_pcie *spear13xx_pcie)
{
u32 val;
struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
struct pcie_port *pp = &spear13xx_pcie->pp;
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
u32 val;
u32 exp_cap_off = EXP_CAP_ID_OFFSET;
if (dw_pcie_link_up(pp)) {
@ -133,9 +133,9 @@ static int spear13xx_pcie_establish_link(struct pcie_port *pp)
static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg)
{
struct pcie_port *pp = arg;
struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
struct spear13xx_pcie *spear13xx_pcie = arg;
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
struct pcie_port *pp = &spear13xx_pcie->pp;
unsigned int status;
status = readl(&app_reg->int_sts);
@ -150,9 +150,9 @@ static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg)
return IRQ_HANDLED;
}
static void spear13xx_pcie_enable_interrupts(struct pcie_port *pp)
static void spear13xx_pcie_enable_interrupts(struct spear13xx_pcie *spear13xx_pcie)
{
struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
struct pcie_port *pp = &spear13xx_pcie->pp;
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
/* Enable MSI interrupt */
@ -176,8 +176,10 @@ static int spear13xx_pcie_link_up(struct pcie_port *pp)
static void spear13xx_pcie_host_init(struct pcie_port *pp)
{
spear13xx_pcie_establish_link(pp);
spear13xx_pcie_enable_interrupts(pp);
struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
spear13xx_pcie_establish_link(spear13xx_pcie);
spear13xx_pcie_enable_interrupts(spear13xx_pcie);
}
static struct pcie_host_ops spear13xx_pcie_host_ops = {
@ -185,9 +187,10 @@ static struct pcie_host_ops spear13xx_pcie_host_ops = {
.host_init = spear13xx_pcie_host_init,
};
static int spear13xx_add_pcie_port(struct pcie_port *pp,
struct platform_device *pdev)
static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie,
struct platform_device *pdev)
{
struct pcie_port *pp = &spear13xx_pcie->pp;
struct device *dev = &pdev->dev;
int ret;
@ -198,7 +201,7 @@ static int spear13xx_add_pcie_port(struct pcie_port *pp,
}
ret = devm_request_irq(dev, pp->irq, spear13xx_pcie_irq_handler,
IRQF_SHARED | IRQF_NO_THREAD,
"spear1340-pcie", pp);
"spear1340-pcie", spear13xx_pcie);
if (ret) {
dev_err(dev, "failed to request irq %d\n", pp->irq);
return ret;
@ -268,7 +271,7 @@ static int spear13xx_pcie_probe(struct platform_device *pdev)
if (of_property_read_bool(np, "st,pcie-is-gen1"))
spear13xx_pcie->is_gen1 = true;
ret = spear13xx_add_pcie_port(pp, pdev);
ret = spear13xx_add_pcie_port(spear13xx_pcie, pdev);
if (ret < 0)
goto fail_clk;