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#include <mach/regs-usb-phy.h>
#include "../../../drivers/usb/gadget/s3c_udc.h"
#include <plat/s5p-otghost.h>
#include <plat/usb-phy.h>
#define PHY_ENABLE (1 << 0)
#define PHY_DISABLE (0)
static int usb_status;
static u64 s3c_device_usb_otghcd_dmamask = 0xffffffffUL;
#ifdef USE_S3C_OTG_PHY
static int c210_otg_host_phy_init(int mode)
{
struct clk *otg_clk;
u32 value;
int err;
otg_clk = clk_get(NULL, "usbotg");
if (IS_ERR(otg_clk)) {
pr_err("otg: Failed to get otg clock\n");
return PTR_ERR(otg_clk);
}
err = clk_enable(otg_clk);
if (err) {
pr_err("otg: Failed to enable otg clock\n");
clk_put(otg_clk);
return err;
}
writel(PHY_ENABLE, S5P_USBOTG_PHY_CONTROL);
value = readl(EXYNOS4_PHYCLK) & (~(1<<4) | (7<<0));
pr_info("otg : phy clk 0x%x\n", value);
writel(value, EXYNOS4_PHYCLK);
value = readl(EXYNOS4_PHYPWR) & (~(7<<3) & ~(1<<0));
pr_info("otg : phy pwr 0x%x\n", value);
writel(value, EXYNOS4_PHYPWR);
value = readl(EXYNOS4_RSTCON) & (~(3<<1) | (1<<0));
writel(value, EXYNOS4_RSTCON);
udelay(10);
value &= ~(7<<0);
writel(value, EXYNOS4_RSTCON);
clk_put(otg_clk);
return 0;
}
static int c210_otg_host_phy_exit(int mode)
{
struct clk *otg_clk;
otg_clk = clk_get(NULL, "usbotg");
if (IS_ERR(otg_clk)) {
pr_err("otg: Failed to get otg clock\n");
return PTR_ERR(otg_clk);
}
writel((readl(EXYNOS4_PHYPWR) | PHY0_NORMAL_MASK),
EXYNOS4_PHYPWR);
writel(PHY_DISABLE, S5P_USBOTG_PHY_CONTROL);
clk_disable(otg_clk);
clk_put(otg_clk);
return 0;
}
#else
static int c210_otg_host_phy_init(int mode)
{
s5p_usb_phy_init(&s3c_device_usbgadget, S5P_USB_PHY_OTGHOST);
return 0;
}
static int c210_otg_host_phy_exit(int mode)
{
s5p_usb_phy_exit(&s3c_device_usbgadget, S5P_USB_PHY_OTGHOST);
return 0;
}
#endif
static void c210_host_notify_cb(int mode)
{
pr_info("otg host_notify : %d\n", mode);
host_state_notify(&host_notifier_pdata.ndev, mode);
}
static struct sec_otghost_data otghost_data = {
.clk_usage = 0,
.set_pwr_cb = usb_otg_accessory_power,
.sec_whlist_table_num = 1,
.start = 0,
.stop = 0,
.phy_init = c210_otg_host_phy_init,
.phy_exit = c210_otg_host_phy_exit,
.host_notify_cb = c210_host_notify_cb,
};
static struct resource s3c_usb_otghcd_resource[] = {
[0] = {
.start = S5P_PA_HSOTG,
.end = S5P_PA_HSOTG + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_USB_HSOTG,
.end = IRQ_USB_HSOTG,
.flags = IORESOURCE_IRQ,
}
};
static struct platform_device s3c_device_usb_otghcd = {
.name = "s3c_otghcd",
.id = -1,
.num_resources = ARRAY_SIZE(s3c_usb_otghcd_resource),
.resource = s3c_usb_otghcd_resource,
.dev = {
.platform_data = &otghost_data,
.dma_mask = &s3c_device_usb_otghcd_dmamask,
.coherent_dma_mask = 0xffffffffUL,
}
};
static char *get_usb_cable_string(int mode)
{
switch (mode) {
case USB_CABLE_DETACHED: return "USB Cable Detached";
case USB_CABLE_ATTACHED: return "USB Cable Attached";
case USB_OTGHOST_ATTACHED: return "Host Attached";
case USB_OTGHOST_DETACHED: return "Host Detached";
case USB_CABLE_DETACHED_WITHOUT_NOTI:
return "USB Cable Detached without noti";
default: return "Unknown cable state";
}
}
static void c210_otghost_start(struct s3c_udc *dev)
{
host_notifier_pdata.ndev.mode = NOTIFY_HOST_MODE;
host_state_notify(&host_notifier_pdata.ndev, NOTIFY_HOST_ADD);
pr_info("otg start: udc %p, regs %p\n", dev, dev->regs);
free_irq(IRQ_USB_HSOTG, dev);
if (otghost_data.start)
otghost_data.start((u32)dev->regs);
}
static int c210_otghost_stop(struct s3c_udc *dev)
{
struct s5p_usbgadget_platdata *pdata;
int ret = 0;
host_notifier_pdata.ndev.mode = NOTIFY_NONE_MODE;
host_state_notify(&host_notifier_pdata.ndev, NOTIFY_HOST_REMOVE);
if (otghost_data.stop)
otghost_data.stop();
pdata = (struct s5p_usbgadget_platdata *)
s3c_device_usbgadget.dev.platform_data;
pr_info("otg pdata %p, irq_cb %p, irq %p\n",
pdata, &pdata->udc_irq, pdata->udc_irq);
if (pdata && pdata->udc_irq) {
pr_info("otg request_irq irq %p, dev %p\n",
pdata->udc_irq, dev);
ret = request_irq(IRQ_USB_HSOTG,
pdata->udc_irq, 0, "s3c-udc", dev);
if (ret != 0) {
pr_info("otg host - can't get irq %i, err %d\n",
IRQ_USB_HSOTG, ret);
return -1;
}
}
return ret;
}
static int c210_change_usb_mode(struct s3c_udc *dev, int mode)
{
pr_info("otg change mode : %s --> %s (%d --> %d) %s\n",
get_usb_cable_string(usb_status),
get_usb_cable_string(mode),
usb_status, mode,
dev->udc_enabled ? "enabled" : "disabled"
);
switch (mode) {
case USB_CABLE_DETACHED:
if (dev->udc_enabled)
usb_gadget_vbus_disconnect(&dev->gadget);
break;
case USB_CABLE_ATTACHED:
if (!dev->udc_enabled)
usb_gadget_vbus_connect(&dev->gadget);
break;
case USB_OTGHOST_ATTACHED:
c210_otghost_start(dev);
break;
case USB_OTGHOST_DETACHED:
c210_otghost_stop(dev);
break;
}
usb_status = mode;
return 0;
}
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