[U-Boot] [PATCH 3/4 v4] DA8xx: Add MUSB host support
Gupta, Ajay Kumar
ajay.gupta at ti.com
Sun Nov 15 06:49:06 CET 2009
Hi,
> -----Original Message-----
> From: Gupta, Ajay Kumar
> Sent: Sunday, November 15, 2009 11:04 AM
> To: u-boot at lists.denx.de
> Cc: linux at bohmer.net; Tom.Rix at windriver.com; Gupta, Ajay Kumar;
> Subbrathnam, Swaminathan
> Subject: [PATCH 3/4 v4] DA8xx: Add MUSB host support
>
> Tested USB host functionality on DA830 EVM.
>
> Signed-off-by: Ajay Kumar Gupta <ajay.gupta at ti.com>
> Signed-off-by: Swaminathan S <swami.iyer at ti.com>
> ---
> drivers/usb/musb/Makefile | 1 +
> drivers/usb/musb/da8xx.c | 139
> +++++++++++++++++++++++++++++++++++++++++++++
> drivers/usb/musb/da8xx.h | 103 +++++++++++++++++++++++++++++++++
> include/usb.h | 3 +-
> 4 files changed, 245 insertions(+), 1 deletions(-)
> create mode 100644 drivers/usb/musb/da8xx.c
> create mode 100644 drivers/usb/musb/da8xx.h
>
> diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile
> index 09e0a5f..eb4d8fd 100644
> --- a/drivers/usb/musb/Makefile
> +++ b/drivers/usb/musb/Makefile
<snip..>
> +
> + /* reset the controller */
> + writel(0x1, da8xx_usb_regs->control);
> + udelay(5000);
> +
> + /* start the on-chip usb phy and its pll */
> + if (phy_on() == 0)
> + return -1;
> +
> + /* Returns zero if e.g. not clocked */
> + revision = readl(da8xx_usb_regs->revision);
'&' is missing, will resubmit the patch set.
Regards,
Ajay
> + if (revision == 0)
> + return -1;
> +
> + /* Disable all interrupts */
> + writel((DA8XX_USB_USBINT_MASK | DA8XX_USB_TXINT_MASK |
> + DA8XX_USB_RXINT_MASK), da8xx_usb_regs->intmsk_set);
> + return 0;
> +}
> +
> +/*
> + * This function performs DA8xx platform specific deinitialization for
> usb0.
> + */
> +void musb_platform_deinit(void)
> +{
> + /* Turn of the phy */
> + phy_off();
> +
> + /* flush any interrupts */
> + writel((DA8XX_USB_USBINT_MASK | DA8XX_USB_TXINT_MASK |
> + DA8XX_USB_RXINT_MASK), da8xx_usb_regs->intmsk_clr);
> + writel(0, da8xx_usb_regs->eoi);
> +}
> diff --git a/drivers/usb/musb/da8xx.h b/drivers/usb/musb/da8xx.h
> new file mode 100644
> index 0000000..93234f0
> --- /dev/null
> +++ b/drivers/usb/musb/da8xx.h
> @@ -0,0 +1,103 @@
> +/*
> + * da8xx.h -- TI's DA8xx platform specific usb wrapper definitions.
> + *
> + * Author: Ajay Kumar Gupta <ajay.gupta at ti.com>
> + *
> + * Based on drivers/usb/musb/davinci.h
> + *
> + * Copyright (C) 2009 Texas Instruments Incorporated
> + *
> + * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
> + */
> +#ifndef __DA8XX_MUSB_H__
> +#define __DA8XX_MUSB_H__
> +
> +#include <asm/arch/hardware.h>
> +#include <asm/arch/gpio_defs.h>
> +#include "musb_core.h"
> +
> +/* Base address of da8xx usb0 wrapper */
> +#define DA8XX_USB_OTG_BASE 0x01E00000
> +
> +/* Base address of da8xx musb core */
> +#define DA8XX_USB_OTG_CORE_BASE (DA8XX_USB_OTG_BASE + 0x400)
> +
> +/* Timeout for DA8xx usb module */
> +#define DA8XX_USB_OTG_TIMEOUT 0x3FFFFFF
> +
> +/*
> + * DA8xx platform USB wrapper register overlay.
> + */
> +struct da8xx_usb_regs {
> + dv_reg revision;
> + dv_reg control;
> + dv_reg status;
> + dv_reg emulation;
> + dv_reg mode;
> + dv_reg autoreq;
> + dv_reg srpfixtime;
> + dv_reg teardown;
> + dv_reg intsrc;
> + dv_reg intsrc_set;
> + dv_reg intsrc_clr;
> + dv_reg intmsk;
> + dv_reg intmsk_set;
> + dv_reg intmsk_clr;
> + dv_reg intsrcmsk;
> + dv_reg eoi;
> + dv_reg intvector;
> + dv_reg grndis_size[4];
> +};
> +
> +#define da8xx_usb_regs ((struct da8xx_usb_regs *)DA8XX_USB_OTG_BASE)
> +
> +/* DA8XX interrupt bits definitions */
> +#define DA8XX_USB_TX_ENDPTS_MASK 0x1f /* ep0 + 4 tx */
> +#define DA8XX_USB_RX_ENDPTS_MASK 0x1e /* 4 rx */
> +#define DA8XX_USB_TXINT_SHIFT 0
> +#define DA8XX_USB_RXINT_SHIFT 8
> +
> +#define DA8XX_USB_USBINT_MASK 0x01ff0000 /* 8 Mentor, DRVVBUS
> */
> +#define DA8XX_USB_TXINT_MASK \
> + (DA8XX_USB_TX_ENDPTS_MASK << DA8XX_USB_TXINT_SHIFT)
> +#define DA8XX_USB_RXINT_MASK \
> + (DA8XX_USB_RX_ENDPTS_MASK << DA8XX_USB_RXINT_SHIFT)
> +
> +/* DA8xx CFGCHIP2 (USB 2.0 PHY Control) register bits */
> +#define CFGCHIP2_PHYCLKGD (1 << 17)
> +#define CFGCHIP2_VBUSSENSE (1 << 16)
> +#define CFGCHIP2_RESET (1 << 15)
> +#define CFGCHIP2_OTGMODE (3 << 13)
> +#define CFGCHIP2_NO_OVERRIDE (0 << 13)
> +#define CFGCHIP2_FORCE_HOST (1 << 13)
> +#define CFGCHIP2_FORCE_DEVICE (2 << 13)
> +#define CFGCHIP2_FORCE_HOST_VBUS_LOW (3 << 13)
> +#define CFGCHIP2_USB1PHYCLKMUX (1 << 12)
> +#define CFGCHIP2_USB2PHYCLKMUX (1 << 11)
> +#define CFGCHIP2_PHYPWRDN (1 << 10)
> +#define CFGCHIP2_OTGPWRDN (1 << 9)
> +#define CFGCHIP2_DATPOL (1 << 8)
> +#define CFGCHIP2_USB1SUSPENDM (1 << 7)
> +#define CFGCHIP2_PHY_PLLON (1 << 6) /* override PLL suspend */
> +#define CFGCHIP2_SESENDEN (1 << 5) /* Vsess_end comparator */
> +#define CFGCHIP2_VBDTCTEN (1 << 4) /* Vbus comparator */
> +#define CFGCHIP2_REFFREQ (0xf << 0)
> +#define CFGCHIP2_REFFREQ_12MHZ (1 << 0)
> +#define CFGCHIP2_REFFREQ_24MHZ (2 << 0)
> +#define CFGCHIP2_REFFREQ_48MHZ (3 << 0)
> +
> +#define DA8XX_USB_VBUS_GPIO (1 << 15)
> +#endif /* __DA8XX_MUSB_H__ */
> +
> diff --git a/include/usb.h b/include/usb.h
> index 7c47098..7c56ace 100644
> --- a/include/usb.h
> +++ b/include/usb.h
> @@ -183,7 +183,8 @@ struct usb_device {
> #if defined(CONFIG_USB_UHCI) || defined(CONFIG_USB_OHCI) || \
> defined(CONFIG_USB_EHCI) || defined(CONFIG_USB_OHCI_NEW) || \
> defined(CONFIG_USB_SL811HS) || defined(CONFIG_USB_ISP116X_HCD) || \
> - defined(CONFIG_USB_R8A66597_HCD) || defined(CONFIG_USB_DAVINCI)
> + defined(CONFIG_USB_R8A66597_HCD) || defined(CONFIG_USB_DAVINCI) || \
> + defined(CONFIG_USB_DA8XX)
>
> int usb_lowlevel_init(void);
> int usb_lowlevel_stop(void);
> --
> 1.6.2.4
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