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dm: usb: exynos: Add driver model support to exynos EHCI

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Update this driver with driver model support for USB.

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 12:22:44 -06:00
parent c0ad74e465
commit aae04d0771
1 changed files with 111 additions and 1 deletions
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112
drivers/usb/host/ehci-exynos.c
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@ -8,6 +8,7 @@
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <malloc.h>
@ -24,19 +25,73 @@
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_DM_USB
struct exynos_ehci_platdata {
struct usb_platdata usb_plat;
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_ehci {
struct ehci_ctrl ctrl;
struct exynos_usb_phy *usb;
struct ehci_hccr *hcd;
#ifndef CONFIG_DM_USB
struct gpio_desc vbus_gpio;
#endif
};
#ifndef CONFIG_DM_USB
static struct exynos_ehci exynos;
#endif
#ifdef CONFIG_OF_CONTROL
#ifdef CONFIG_DM_USB
static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
{
struct exynos_ehci_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 = dev_get_addr(dev);
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_EXYNOS_USB_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_usb_parse_dt(const void *blob, struct exynos_ehci *exynos)
{
fdt_addr_t addr;
@ -215,6 +270,7 @@ static void reset_usb_phy(struct exynos_usb_phy *usb)
set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE);
}
#ifndef CONFIG_DM_USB
/*
* EHCI-initialization
* Create the appropriate control structures to manage
@ -268,3 +324,57 @@ int ehci_hcd_stop(int index)
return 0;
}
#endif
#ifdef CONFIG_DM_USB
static int ehci_usb_probe(struct udevice *dev)
{
struct exynos_ehci_platdata *plat = dev_get_platdata(dev);
struct exynos_ehci *ctx = dev_get_priv(dev);
struct ehci_hcor *hcor;
ctx->hcd = (struct ehci_hccr *)plat->hcd_base;
ctx->usb = (struct exynos_usb_phy *)plat->phy_base;
hcor = (struct ehci_hcor *)((uint32_t)ctx->hcd +
HC_LENGTH(ehci_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);
setup_usb_phy(ctx->usb);
return ehci_register(dev, ctx->hcd, hcor, NULL, 0, USB_INIT_HOST);
}
static int ehci_usb_remove(struct udevice *dev)
{
struct exynos_ehci *ctx = dev_get_priv(dev);
int ret;
ret = ehci_deregister(dev);
if (ret)
return ret;
reset_usb_phy(ctx->usb);
return 0;
}
static const struct udevice_id ehci_usb_ids[] = {
{ .compatible = "samsung,exynos-ehci" },
{ }
};
U_BOOT_DRIVER(usb_ehci) = {
.name = "ehci_exynos",
.id = UCLASS_USB,
.of_match = ehci_usb_ids,
.ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
.probe = ehci_usb_probe,
.remove = ehci_usb_remove,
.ops = &ehci_usb_ops,
.priv_auto_alloc_size = sizeof(struct exynos_ehci),
.platdata_auto_alloc_size = sizeof(struct exynos_ehci_platdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#endif