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USB: S5P: Add ehci support 

This patch adds ehci driver support for s5p.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
This commit is contained in:
Rajeshwari Shinde 2012-05-02 19:18:51 +05:30 committed by Marek Vasut
parent 6734b6b234
commit 5f0ffea455
3 changed files with 177 additions and 0 deletions
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66
arch/arm/include/asm/arch-exynos/ehci-s5p.h Normal file
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@ -0,0 +1,66 @@
/*
* SAMSUNG S5P USB HOST EHCI Controller
*
* Copyright (C) 2012 Samsung Electronics Co.Ltd
* Vivek Gautam <gautam.vivek@samsung.com>
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#ifndef __ASM_ARM_ARCH_EXYNOS5_EHCI_S5P_H__
#define __ASM_ARM_ARCH_EXYNOS5_EHCI_S5P_H__
#define CLK_24MHZ 5
#define HOST_CTRL0_PHYSWRSTALL (1 << 31)
#define HOST_CTRL0_COMMONON_N (1 << 9)
#define HOST_CTRL0_SIDDQ (1 << 6)
#define HOST_CTRL0_FORCESLEEP (1 << 5)
#define HOST_CTRL0_FORCESUSPEND (1 << 4)
#define HOST_CTRL0_WORDINTERFACE (1 << 3)
#define HOST_CTRL0_UTMISWRST (1 << 2)
#define HOST_CTRL0_LINKSWRST (1 << 1)
#define HOST_CTRL0_PHYSWRST (1 << 0)
#define HOST_CTRL0_FSEL_MASK (7 << 16)
#define EHCICTRL_ENAINCRXALIGN (1 << 29)
#define EHCICTRL_ENAINCR4 (1 << 28)
#define EHCICTRL_ENAINCR8 (1 << 27)
#define EHCICTRL_ENAINCR16 (1 << 26)
/* Register map for PHY control */
struct s5p_usb_phy {
unsigned int usbphyctrl0;
unsigned int usbphytune0;
unsigned int reserved1[2];
unsigned int hsicphyctrl1;
unsigned int hsicphytune1;
unsigned int reserved2[2];
unsigned int hsicphyctrl2;
unsigned int hsicphytune2;
unsigned int reserved3[2];
unsigned int ehcictrl;
unsigned int ohcictrl;
unsigned int usbotgsys;
unsigned int reserved4;
unsigned int usbotgtune;
};
/* Switch on the VBUS power. */
int board_usb_vbus_init(void);
#endif /* __ASM_ARM_ARCH_EXYNOS5_EHCI_S5P_H__ */

1
drivers/usb/host/Makefile
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@ -50,6 +50,7 @@ COBJS-$(CONFIG_USB_EHCI_PPC4XX) += ehci-ppc4xx.o
COBJS-$(CONFIG_USB_EHCI_IXP4XX) += ehci-ixp.o
COBJS-$(CONFIG_USB_EHCI_MARVELL) += ehci-marvell.o
COBJS-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
COBJS-$(CONFIG_USB_EHCI_S5P) += ehci-s5p.o
COBJS-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
COBJS-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o

110
drivers/usb/host/ehci-s5p.c Normal file
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@ -0,0 +1,110 @@
/*
* SAMSUNG S5P USB HOST EHCI Controller
*
* Copyright (C) 2012 Samsung Electronics Co.Ltd
* Vivek Gautam <gautam.vivek@samsung.com>
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <common.h>
#include <usb.h>
#include <asm/arch/cpu.h>
#include <asm/arch/ehci-s5p.h>
#include "ehci.h"
#include "ehci-core.h"
/* Setup the EHCI host controller. */
static void setup_usb_phy(struct s5p_usb_phy *usb)
{
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_FSEL_MASK |
HOST_CTRL0_COMMONON_N |
/* HOST Phy setting */
HOST_CTRL0_PHYSWRST |
HOST_CTRL0_PHYSWRSTALL |
HOST_CTRL0_SIDDQ |
HOST_CTRL0_FORCESUSPEND |
HOST_CTRL0_FORCESLEEP);
setbits_le32(&usb->usbphyctrl0,
/* Setting up the ref freq */
(CLK_24MHZ << 16) |
/* HOST Phy setting */
HOST_CTRL0_LINKSWRST |
HOST_CTRL0_UTMISWRST);
udelay(10);
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_LINKSWRST |
HOST_CTRL0_UTMISWRST);
udelay(20);
/* EHCI Ctrl setting */
setbits_le32(&usb->ehcictrl,
EHCICTRL_ENAINCRXALIGN |
EHCICTRL_ENAINCR4 |
EHCICTRL_ENAINCR8 |
EHCICTRL_ENAINCR16);
}
/* Reset the EHCI host controller. */
static void reset_usb_phy(struct s5p_usb_phy *usb)
{
/* HOST_PHY reset */
setbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_PHYSWRST |
HOST_CTRL0_PHYSWRSTALL |
HOST_CTRL0_SIDDQ |
HOST_CTRL0_FORCESUSPEND |
HOST_CTRL0_FORCESLEEP);
}
/*
* EHCI-initialization
* Create the appropriate control structures to manage
* a new EHCI host controller.
*/
int ehci_hcd_init(void)
{
struct s5p_usb_phy *usb;
usb = (struct s5p_usb_phy *)samsung_get_base_usb_phy();
setup_usb_phy(usb);
hccr = (struct ehci_hccr *)(EXYNOS5_USB_HOST_EHCI_BASE);
hcor = (struct ehci_hcor *)((uint32_t) hccr
+ HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n",
(uint32_t)hccr, (uint32_t)hcor,
(uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
return 0;
}
/*
* Destroy the appropriate control structures corresponding
* the EHCI host controller.
*/
int ehci_hcd_stop()
{
struct s5p_usb_phy *usb;
usb = (struct s5p_usb_phy *)samsung_get_base_usb_phy();
reset_usb_phy(usb);
return 0;
}