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dm: usb: exynos: Adjust XHCI driver to support driver model

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Support driver model in the exynos XHCI driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Simon Glass 2015-03-25 12:22:55 -06:00
parent f161c17840
commit 52e6935774
1 changed files with 119 additions and 1 deletions
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120
drivers/usb/host/xhci-exynos5.c
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@ -14,6 +14,7 @@
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <malloc.h>
@ -32,20 +33,76 @@
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_DM_USB
struct exynos_xhci_platdata {
fdt_addr_t hcd_base;
fdt_addr_t phy_base;
struct gpio_desc vbus_gpio;
};
#endif
/**
* Contains pointers to register base addresses
* for the usb controller.
*/
struct exynos_xhci {
#ifdef CONFIG_DM_USB
struct usb_platdata usb_plat;
#endif
struct xhci_ctrl ctrl;
struct exynos_usb3_phy *usb3_phy;
struct xhci_hccr *hcd;
struct dwc3 *dwc3_reg;
#ifndef CONFIG_DM_USB
struct gpio_desc vbus_gpio;
#endif
};
#ifndef CONFIG_DM_USB
static struct exynos_xhci exynos;
#endif
#ifdef CONFIG_OF_CONTROL
#ifdef CONFIG_DM_USB
static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
{
struct exynos_xhci_platdata *plat = dev_get_platdata(dev);
const void *blob = gd->fdt_blob;
unsigned int node;
int depth;
/*
* Get the base address for XHCI controller from the device node
*/
plat->hcd_base = fdtdec_get_addr(blob, dev->of_offset, "reg");
if (plat->hcd_base == FDT_ADDR_T_NONE) {
debug("Can't get the XHCI register base address\n");
return -ENXIO;
}
depth = 0;
node = fdtdec_next_compatible_subnode(blob, dev->of_offset,
COMPAT_SAMSUNG_EXYNOS5_USB3_PHY, &depth);
if (node <= 0) {
debug("XHCI: Can't get device node for usb3-phy controller\n");
return -ENODEV;
}
/*
* Get the base address for usbphy from the device node
*/
plat->phy_base = fdtdec_get_addr(blob, node, "reg");
if (plat->phy_base == FDT_ADDR_T_NONE) {
debug("Can't get the usbphy register address\n");
return -ENXIO;
}
/* Vbus gpio */
gpio_request_by_name(dev, "samsung,vbus-gpio", 0,
&plat->vbus_gpio, GPIOD_IS_OUT);
return 0;
}
#else
static int exynos_usb3_parse_dt(const void *blob, struct exynos_xhci *exynos)
{
fdt_addr_t addr;
@ -283,6 +340,7 @@ static void exynos_xhci_core_exit(struct exynos_xhci *exynos)
exynos5_usb3_phy_exit(exynos->usb3_phy);
}
#ifndef CONFIG_DM_USB
int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
{
struct exynos_xhci *ctx = &exynos;
@ -326,3 +384,63 @@ void xhci_hcd_stop(int index)
exynos_xhci_core_exit(ctx);
}
#endif
#ifdef CONFIG_DM_USB
static int xhci_usb_probe(struct udevice *dev)
{
struct exynos_xhci_platdata *plat = dev_get_platdata(dev);
struct exynos_xhci *ctx = dev_get_priv(dev);
struct xhci_hcor *hcor;
int ret;
ctx->hcd = (struct xhci_hccr *)plat->hcd_base;
ctx->usb3_phy = (struct exynos_usb3_phy *)plat->phy_base;
ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET);
hcor = (struct xhci_hcor *)((uint32_t)ctx->hcd +
HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase)));
/* setup the Vbus gpio here */
if (dm_gpio_is_valid(&plat->vbus_gpio))
dm_gpio_set_value(&plat->vbus_gpio, 1);
ret = exynos_xhci_core_init(ctx);
if (ret) {
puts("XHCI: failed to initialize controller\n");
return -EINVAL;
}
return xhci_register(dev, ctx->hcd, hcor);
}
static int xhci_usb_remove(struct udevice *dev)
{
struct exynos_xhci *ctx = dev_get_priv(dev);
int ret;
ret = xhci_deregister(dev);
if (ret)
return ret;
exynos_xhci_core_exit(ctx);
return 0;
}
static const struct udevice_id xhci_usb_ids[] = {
{ .compatible = "samsung,exynos5250-xhci" },
{ }
};
U_BOOT_DRIVER(usb_xhci) = {
.name = "xhci_exynos",
.id = UCLASS_USB,
.of_match = xhci_usb_ids,
.ofdata_to_platdata = xhci_usb_ofdata_to_platdata,
.probe = xhci_usb_probe,
.remove = xhci_usb_remove,
.ops = &xhci_usb_ops,
.platdata_auto_alloc_size = sizeof(struct exynos_xhci_platdata),
.priv_auto_alloc_size = sizeof(struct exynos_xhci),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#endif