On 09:41 Sun 04 Jan , Thomas Abraham wrote: > Adding DM6446 (TI DaVinci) platform specific USB functionality for > USB Phy and VBUS initialization. > > Signed-off-by: Ravi Babu <[email protected]> > Signed-off-by: Swaminathan S <[email protected]> > Signed-off-by: Thomas Abraham <[email protected]> > Signed-off-by: Ajay Kumar Gupta <[email protected]> > --- > drivers/usb/Makefile | 1 + > drivers/usb/davinci_usb.c | 106 > +++++++++++++++++++++++++++++++++++++++++++++ > drivers/usb/davinci_usb.h | 87 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 194 insertions(+), 0 deletions(-) > create mode 100644 drivers/usb/davinci_usb.c > create mode 100644 drivers/usb/davinci_usb.h > > diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile > index 94eea70..3a2706d 100644 > --- a/drivers/usb/Makefile > +++ b/drivers/usb/Makefile > @@ -36,6 +36,7 @@ COBJS-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o > COBJS-$(CONFIG_USB_SL811HS) += sl811_usb.o > COBJS-$(CONFIG_USB_EHCI_FSL) += usb_ehci_fsl.o > COBJS-$(CONFIG_MUSB_HCD) += musb_hcd.o musb_core.o > +COBJS-$(CONFIG_USB_DAVINCI) += davinci_usb.o > > # device > ifdef CONFIG_USB_DEVICE > diff --git a/drivers/usb/davinci_usb.c b/drivers/usb/davinci_usb.c > new file mode 100644 > index 0000000..e66f660 > --- /dev/null > +++ b/drivers/usb/davinci_usb.c > @@ -0,0 +1,106 @@ > +/* > + * TI's Davinci platform specific USB wrapper functions. > + * > + * Copyright (c) 2008 Texas Instruments > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License as > + * published by the Free Software Foundation; either version 2 of > + * the License, or (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program; if not, write to the Free Software > + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, > + * MA 02111-1307 USA > + * > + * Author: Thomas Abraham [email protected], Texas Instruments > + */ > + > +#include <common.h> > +#include <asm/io.h> > +#include "davinci_usb.h" > + > +/* MUSB platform configuration */ > +struct musb_config musb_cfg = { > + (struct musb_regs *)MENTOR_USB0_BASE, > + DAVINCI_USB_TIMEOUT, > + 0 > +}; > + > +/* MUSB module register overlay */ > +struct davinci_usb_regs *dregs; > + > +/* > + * Enable the USB phy > + */ > +static u8 phy_on(void) > +{ > + u32 timeout; > + > + /* Wait until the USB phy is turned on */ > + writel(USBPHY_SESNDEN | USBPHY_VBDTCTEN, USBPHY_CTL_PADDR); > + timeout = musb_cfg.timeout; > + while (timeout--) > + if (readl(USBPHY_CTL_PADDR) & USBPHY_PHYCLKGD) > + return 1; > + > + /* USB phy was not turned on */ > + return 0; > +} > + > +/* > + * Disable the USB phy > + */ > +static void phy_off(void) > +{ > + /* powerdown the on-chip PHY and its oscillator */ > + writel(USBPHY_OSCPDWN | USBPHY_PHYPDWN, USBPHY_CTL_PADDR); > +} > + > +/* > + * This function performs Davinci platform specific initialization for usb0. > + */ > +int musb_platform_init(void) > +{ > + u32 revision; > + > + /* enable USB VBUS */ > + enable_vbus(); > + > + /* start the on-chip USB phy and its pll */ > + if (!phy_on()) > + return -1; > + > + /* reset the controller */ > + dregs = (struct davinci_usb_regs *)DAVINCI_USB0_BASE; > + writel(1, &dregs->ctrlr); > + udelay(5000); > + > + /* Returns zero if e.g. not clocked */ > + revision = readl(&dregs->version); > + if (!revision) > + return -1; > + > + /* Disable all interrupts */ > + writel(DAVINCI_USB_USBINT_MASK | DAVINCI_USB_RXINT_MASK | > + DAVINCI_USB_TXINT_MASK , &dregs->intmsksetr); > + return 0; > +} > + > +/* > + * This function performs Davinci platform specific deinitialization for > usb0. > + */ > +void musb_platform_deinit(void) > +{ > + /* Turn of the phy */ > + phy_off(); > + > + /* flush any interrupts */ > + writel(DAVINCI_USB_USBINT_MASK | DAVINCI_USB_TXINT_MASK | > + DAVINCI_USB_RXINT_MASK , &dregs->intclrr); > +} > diff --git a/drivers/usb/davinci_usb.h b/drivers/usb/davinci_usb.h > new file mode 100644 > index 0000000..d270861 > --- /dev/null > +++ b/drivers/usb/davinci_usb.h > @@ -0,0 +1,87 @@ > +/* > + * TI's Davinci platform specific USB wrapper functions. > + * > + * Copyright (c) 2008 Texas Instruments > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License as > + * published by the Free Software Foundation; either version 2 of > + * the License, or (at your option) any later version. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program; if not, write to the Free Software > + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, > + * MA 02111-1307 USA > + * > + * Author: Thomas Abraham [email protected], Texas Instruments > + */ > + > +#ifndef __DAVINCI_USB_H__ > +#define __DAVINCI_USB_H__ > + > +#include <asm/arch/hardware.h> > +#include "musb_core.h" > + > +/* Base address of DAVINCI usb0 wrapper */ > +#define DAVINCI_USB0_BASE 0x01C64000 > + > +/* Base address of DAVINCI musb core */ > +#define MENTOR_USB0_BASE (DAVINCI_USB0_BASE+0x400) ^ please add a space before and after '+' > + > +/* > + * Davinci platform USB wrapper register overlay. Note: Only the required > + * registers are included in this structure. It can be expanded as required. > + */ > +struct davinci_usb_regs { > + u32 version; > + u32 ctrlr; > + u32 reserved[0x20]; > + u32 intclrr; > + u32 intmskr; ^ whitespace please remove > + u32 intmsksetr; ^ whitespace please remove there is other whitespaces please check > +}; > + > +#define DAVINCI_USB_TX_ENDPTS_MASK 0x1f /* ep0 + 4 tx */ > +#define DAVINCI_USB_RX_ENDPTS_MASK 0x1e /* 4 rx */ > +#define DAVINCI_USB_USBINT_SHIFT 16 > +#define DAVINCI_USB_TXINT_SHIFT 0 > +#define DAVINCI_USB_RXINT_SHIFT 8 > +#define DAVINCI_INTR_DRVVBUS 0x0100 > + > +#define DAVINCI_USB_USBINT_MASK 0x01ff0000 /* 8 Mentor, DRVVBUS */ > +#define DAVINCI_USB_TXINT_MASK \ > + (DAVINCI_USB_TX_ENDPTS_MASK << DAVINCI_USB_TXINT_SHIFT) > +#define DAVINCI_USB_RXINT_MASK \ > + (DAVINCI_USB_RX_ENDPTS_MASK << DAVINCI_USB_RXINT_SHIFT) > +#define MGC_BUSCTL_OFFSET(_bEnd, _bOffset) \ > + (0x80 + (8*(_bEnd)) + (_bOffset)) > + > +/* Integrated highspeed/otg PHY */ > +#define USBPHY_CTL_PADDR (DAVINCI_SYSTEM_MODULE_BASE + 0x34) > +#define USBPHY_PHYCLKGD (1 << 8) > +#define USBPHY_SESNDEN (1 << 7) /* v(sess_end) > comparator */ > +#define USBPHY_VBDTCTEN (1 << 6) /* v(bus) comparator */ > +#define USBPHY_PHYPLLON (1 << 4) /* override pll suspend */ > +#define USBPHY_CLKO1SEL (1 << 3) > +#define USBPHY_OSCPDWN (1 << 2) > +#define USBPHY_PHYPDWN (1 << 0) > + > +/* Timeout for Davinci USB module */ > +#define DAVINCI_USB_TIMEOUT 0x3FFFFFF > + > +/* IO Expander I2C address and VBUS enable mask */ > +#define IOEXP_I2C_ADDR 0x3A > +#define IOEXP_VBUSEN_MASK 1 > + > +/* extern functions */ > +extern void lpsc_on(unsigned int id); > +extern int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int > len); > +extern int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len); all ready define in i2c.h
Best Regards, J. _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
