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 --- arch/arm/include/asm/arch-exynos/ehci-s5p.h | 66 ++++++++++++++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-s5p.c | 110 +++++++++++++++++++++++++++ 3 files changed, 177 insertions(+), 0 deletions(-) create mode 100644 arch/arm/include/asm/arch-exynos/ehci-s5p.h create mode 100644 drivers/usb/host/ehci-s5p.c
diff --git a/arch/arm/include/asm/arch-exynos/ehci-s5p.h b/arch/arm/include/asm/arch-exynos/ehci-s5p.h new file mode 100644 index 0000000..68feb85 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/ehci-s5p.h @@ -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__ */ diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 0d4657e..59c3e57 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -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
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c new file mode 100644 index 0000000..4dd4ec1 --- /dev/null +++ b/drivers/usb/host/ehci-s5p.c @@ -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; +}