diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/g_dnl.c | 23 | ||||
| -rw-r--r-- | drivers/usb/gadget/regs-otg.h | 5 | ||||
| -rw-r--r-- | drivers/usb/gadget/s3c_udc_otg.c | 9 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-omap.c | 57 |
4 files changed, 73 insertions, 21 deletions
diff --git a/drivers/usb/gadget/g_dnl.c b/drivers/usb/gadget/g_dnl.c index 8dc3d9f8a..dd95afe86 100644 --- a/drivers/usb/gadget/g_dnl.c +++ b/drivers/usb/gadget/g_dnl.c @@ -147,6 +147,23 @@ int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name) return 0; } +__weak int g_dnl_get_board_bcd_device_number(int gcnum) +{ + return gcnum; +} + +static int g_dnl_get_bcd_device_number(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int gcnum; + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum > 0) + gcnum += 0x200; + + return g_dnl_get_board_bcd_device_number(gcnum); +} + static int g_dnl_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; @@ -181,11 +198,9 @@ static int g_dnl_bind(struct usb_composite_dev *cdev) if (ret) goto error; - gcnum = usb_gadget_controller_number(gadget); - - debug("gcnum: %d\n", gcnum); + gcnum = g_dnl_get_bcd_device_number(cdev); if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum); + device_desc.bcdDevice = cpu_to_le16(gcnum); else { debug("%s: controller '%s' not recognized\n", shortname, gadget->name); diff --git a/drivers/usb/gadget/regs-otg.h b/drivers/usb/gadget/regs-otg.h index 84bfcc5a0..ac5d11213 100644 --- a/drivers/usb/gadget/regs-otg.h +++ b/drivers/usb/gadget/regs-otg.h @@ -226,6 +226,11 @@ struct s3c_usbotg_reg { #define CLK_SEL_12MHZ (0x2 << 0) #define CLK_SEL_48MHZ (0x0 << 0) +#define EXYNOS4X12_ID_PULLUP0 (0x01 << 3) +#define EXYNOS4X12_COMMON_ON_N0 (0x01 << 4) +#define EXYNOS4X12_CLK_SEL_12MHZ (0x02 << 0) +#define EXYNOS4X12_CLK_SEL_24MHZ (0x05 << 0) + /* Device Configuration Register DCFG */ #define DEV_SPEED_HIGH_SPEED_20 (0x0 << 0) #define DEV_SPEED_FULL_SPEED_20 (0x1 << 0) diff --git a/drivers/usb/gadget/s3c_udc_otg.c b/drivers/usb/gadget/s3c_udc_otg.c index 7e2020915..ba17a0426 100644 --- a/drivers/usb/gadget/s3c_udc_otg.c +++ b/drivers/usb/gadget/s3c_udc_otg.c @@ -167,8 +167,13 @@ void otg_phy_init(struct s3c_udc *dev) writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN) &~FORCE_SUSPEND_0), &phy->phypwr); - writel((readl(&phy->phyclk) &~(ID_PULLUP0 | COMMON_ON_N0)) | - CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */ + if (s5p_cpu_id == 0x4412) + writel((readl(&phy->phyclk) & ~(EXYNOS4X12_ID_PULLUP0 | + EXYNOS4X12_COMMON_ON_N0)) | EXYNOS4X12_CLK_SEL_24MHZ, + &phy->phyclk); /* PLL 24Mhz */ + else + writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) | + CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */ writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST)) | PHY_SW_RST0, &phy->rstcon); diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index c4ce48708..1b215c25f 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -28,21 +28,48 @@ static struct omap_ehci *const ehci = (struct omap_ehci *)OMAP_EHCI_BASE; static int omap_uhh_reset(void) { -/* - * Soft resetting the UHH module causes instability issues on - * all OMAPs so we just avoid it. - * - * See OMAP36xx Errata - * i571: USB host EHCI may stall when entering smart-standby mode - * i660: USBHOST Configured In Smart-Idle Can Lead To a Deadlock - * - * On OMAP4/5, soft-resetting the UHH module will put it into - * Smart-Idle mode and lead to a deadlock. - * - * On OMAP3, this doesn't seem to be the case but still instabilities - * are observed on beagle (3530 ES1.0) if soft-reset is used. - * e.g. NFS root failures with Linux kernel. - */ + int timeout = 0; + u32 rev; + + rev = readl(&uhh->rev); + + /* Soft RESET */ + writel(OMAP_UHH_SYSCONFIG_SOFTRESET, &uhh->sysc); + + switch (rev) { + case OMAP_USBHS_REV1: + /* Wait for soft RESET to complete */ + while (!(readl(&uhh->syss) & 0x1)) { + if (timeout > 100) { + printf("%s: RESET timeout\n", __func__); + return -1; + } + udelay(10); + timeout++; + } + + /* Set No-Idle, No-Standby */ + writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc); + break; + + default: /* Rev. 2 onwards */ + + udelay(2); /* Need to wait before accessing SYSCONFIG back */ + + /* Wait for soft RESET to complete */ + while ((readl(&uhh->sysc) & 0x1)) { + if (timeout > 100) { + printf("%s: RESET timeout\n", __func__); + return -1; + } + udelay(10); + timeout++; + } + + writel(OMAP_UHH_SYSCONFIG_VAL, &uhh->sysc); + break; + } + return 0; } |