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ehci-mxc: Make EHCI power/oc polarities configurable

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Make EHCI power and overcurrent polarities configurable. If not set, these new
configurartions keep the default register values so that existing board files
do not have to be changed.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Benoît Thébaudeau 2012-11-13 09:57:27 +00:00 committed by Stefano Babic
parent 2cfe0b8f13
commit 31ac2d0c6a
2 changed files with 62 additions and 4 deletions
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56
drivers/usb/host/ehci-mx5.c
View file

@ -46,29 +46,43 @@
#define MXC_OTG_UCTRL_OWIE_BIT (1 << 27)
/* OTG power mask */
#define MXC_OTG_UCTRL_OPM_BIT (1 << 24)
/* OTG power pin polarity */
#define MXC_OTG_UCTRL_O_PWR_POL_BIT (1 << 24)
/* Host1 ULPI interrupt enable */
#define MXC_H1_UCTRL_H1UIE_BIT (1 << 12)
/* HOST1 wakeup intr enable */
#define MXC_H1_UCTRL_H1WIE_BIT (1 << 11)
/* HOST1 power mask */
#define MXC_H1_UCTRL_H1PM_BIT (1 << 8)
/* HOST1 power pin polarity */
#define MXC_H1_UCTRL_H1_PWR_POL_BIT (1 << 8)
/* USB_PHY_CTRL_FUNC */
/* OTG Polarity of Overcurrent */
#define MXC_OTG_PHYCTRL_OC_POL_BIT (1 << 9)
/* OTG Disable Overcurrent Event */
#define MXC_OTG_PHYCTRL_OC_DIS_BIT (1 << 8)
/* UH1 Polarity of Overcurrent */
#define MXC_H1_OC_POL_BIT (1 << 6)
/* UH1 Disable Overcurrent Event */
#define MXC_H1_OC_DIS_BIT (1 << 5)
/* OTG Power Pin Polarity */
#define MXC_OTG_PHYCTRL_PWR_POL_BIT (1 << 3)
/* USBH2CTRL */
#define MXC_H2_UCTRL_H2_OC_POL_BIT (1 << 31)
#define MXC_H2_UCTRL_H2_OC_DIS_BIT (1 << 30)
#define MXC_H2_UCTRL_H2UIE_BIT (1 << 8)
#define MXC_H2_UCTRL_H2WIE_BIT (1 << 7)
#define MXC_H2_UCTRL_H2PM_BIT (1 << 4)
#define MXC_H2_UCTRL_H2_PWR_POL_BIT (1 << 4)
/* USBH3CTRL */
#define MXC_H3_UCTRL_H3_OC_POL_BIT (1 << 31)
#define MXC_H3_UCTRL_H3_OC_DIS_BIT (1 << 30)
#define MXC_H3_UCTRL_H3UIE_BIT (1 << 8)
#define MXC_H3_UCTRL_H3WIE_BIT (1 << 7)
#define MXC_H3_UCTRL_H3_PWR_POL_BIT (1 << 4)
/* USB_CTRL_1 */
#define MXC_USB_CTRL_UH1_EXT_CLK_EN (1 << 25)
@ -158,12 +172,22 @@ int mxc_set_usbcontrol(int port, unsigned int flags)
if (flags & MXC_EHCI_INTERNAL_PHY) {
v = __raw_readl(usbother_base +
MXC_USB_PHY_CTR_FUNC_OFFSET);
if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
v |= MXC_OTG_PHYCTRL_OC_POL_BIT;
else
v &= ~MXC_OTG_PHYCTRL_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
/* OC/USBPWR is used */
v &= ~MXC_OTG_PHYCTRL_OC_DIS_BIT;
else
/* OC/USBPWR is not used */
v |= MXC_OTG_PHYCTRL_OC_DIS_BIT;
#ifdef CONFIG_MX51
if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
v |= MXC_OTG_PHYCTRL_PWR_POL_BIT;
else
v &= ~MXC_OTG_PHYCTRL_PWR_POL_BIT;
#endif
__raw_writel(v, usbother_base +
MXC_USB_PHY_CTR_FUNC_OFFSET);
@ -173,6 +197,12 @@ int mxc_set_usbcontrol(int port, unsigned int flags)
v &= ~MXC_OTG_UCTRL_OPM_BIT;
else
v |= MXC_OTG_UCTRL_OPM_BIT;
#endif
#ifdef CONFIG_MX53
if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
v |= MXC_OTG_UCTRL_O_PWR_POL_BIT;
else
v &= ~MXC_OTG_UCTRL_O_PWR_POL_BIT;
#endif
__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
}
@ -192,10 +222,20 @@ int mxc_set_usbcontrol(int port, unsigned int flags)
v &= ~MXC_H1_UCTRL_H1PM_BIT; /* H1 power mask unused */
else
v |= MXC_H1_UCTRL_H1PM_BIT; /* H1 power mask used */
#endif
#ifdef CONFIG_MX53
if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
v |= MXC_H1_UCTRL_H1_PWR_POL_BIT;
else
v &= ~MXC_H1_UCTRL_H1_PWR_POL_BIT;
#endif
__raw_writel(v, usbother_base + MXC_USBCTRL_OFFSET);
v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC_OFFSET);
if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
v |= MXC_H1_OC_POL_BIT;
else
v &= ~MXC_H1_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
v &= ~MXC_H1_OC_DIS_BIT; /* OC is used */
else
@ -212,20 +252,36 @@ int mxc_set_usbcontrol(int port, unsigned int flags)
v |= MXC_H2_UCTRL_H2PM_BIT; /* H2 power mask used */
#endif
#ifdef CONFIG_MX53
if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
v |= MXC_H2_UCTRL_H2_OC_POL_BIT;
else
v &= ~MXC_H2_UCTRL_H2_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
v &= ~MXC_H2_UCTRL_H2_OC_DIS_BIT; /* OC is used */
else
v |= MXC_H2_UCTRL_H2_OC_DIS_BIT; /* OC is not used */
if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
v |= MXC_H2_UCTRL_H2_PWR_POL_BIT;
else
v &= ~MXC_H2_UCTRL_H2_PWR_POL_BIT;
#endif
__raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
break;
#ifdef CONFIG_MX53
case 3: /* Host 3 ULPI */
v = __raw_readl(usbother_base + MXC_USBH3CTRL_OFFSET);
if (flags & MXC_EHCI_OC_PIN_ACTIVE_LOW)
v |= MXC_H3_UCTRL_H3_OC_POL_BIT;
else
v &= ~MXC_H3_UCTRL_H3_OC_POL_BIT;
if (flags & MXC_EHCI_POWER_PINS_ENABLED)
v &= ~MXC_H3_UCTRL_H3_OC_DIS_BIT; /* OC is used */
else
v |= MXC_H3_UCTRL_H3_OC_DIS_BIT; /* OC is not used */
if (flags & MXC_EHCI_PWR_PIN_ACTIVE_HIGH)
v |= MXC_H3_UCTRL_H3_PWR_POL_BIT;
else
v &= ~MXC_H3_UCTRL_H3_PWR_POL_BIT;
__raw_writel(v, usbother_base + MXC_USBH3CTRL_OFFSET);
break;
#endif

10
include/usb/ehci-fsl.h
View file

@ -266,11 +266,13 @@ struct usb_ehci {
#define MXC_EHCI_INTERFACE_MASK (0xf)
#define MXC_EHCI_POWER_PINS_ENABLED (1 << 5)
#define MXC_EHCI_TTL_ENABLED (1 << 6)
#define MXC_EHCI_PWR_PIN_ACTIVE_HIGH (1 << 6)
#define MXC_EHCI_OC_PIN_ACTIVE_LOW (1 << 7)
#define MXC_EHCI_TTL_ENABLED (1 << 8)
#define MXC_EHCI_INTERNAL_PHY (1 << 7)
#define MXC_EHCI_IPPUE_DOWN (1 << 8)
#define MXC_EHCI_IPPUE_UP (1 << 9)
#define MXC_EHCI_INTERNAL_PHY (1 << 9)
#define MXC_EHCI_IPPUE_DOWN (1 << 10)
#define MXC_EHCI_IPPUE_UP (1 << 11)
/* Board-specific initialization */
int board_ehci_hcd_init(int port);