* 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/ehci.h>
#include <asm/arch/system.h>
#include <asm/arch/power.h>
+#include <asm/gpio.h>
#include <asm-generic/errno.h>
#include <linux/compat.h>
#include "ehci.h"
*/
struct exynos_ehci {
struct exynos_usb_phy *usb;
- unsigned int *hcd;
+ struct ehci_hccr *hcd;
+ struct fdt_gpio_state vbus_gpio;
};
+static struct exynos_ehci exynos;
+
+#ifdef CONFIG_OF_CONTROL
static int exynos_usb_parse_dt(const void *blob, struct exynos_ehci *exynos)
{
+ fdt_addr_t addr;
unsigned int node;
int depth;
/*
* Get the base address for EHCI controller from the device node
*/
- exynos->hcd = (unsigned int *)fdtdec_get_addr(blob, node, "reg");
- if (exynos->hcd == NULL) {
+ addr = fdtdec_get_addr(blob, node, "reg");
+ if (addr == FDT_ADDR_T_NONE) {
debug("Can't get the EHCI register address\n");
return -ENXIO;
}
+ exynos->hcd = (struct ehci_hccr *)addr;
+
+ /* Vbus gpio */
+ fdtdec_decode_gpio(blob, node, "samsung,vbus-gpio", &exynos->vbus_gpio);
+
depth = 0;
node = fdtdec_next_compatible_subnode(blob, node,
COMPAT_SAMSUNG_EXYNOS_USB_PHY, &depth);
return 0;
}
+#endif
/* Setup the EHCI host controller. */
static void setup_usb_phy(struct exynos_usb_phy *usb)
{
+ u32 hsic_ctrl;
+
set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN);
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_LINKSWRST |
HOST_CTRL0_UTMISWRST);
+
+ /* HSIC Phy Setting */
+ hsic_ctrl = (HSIC_CTRL_FORCESUSPEND |
+ HSIC_CTRL_FORCESLEEP |
+ HSIC_CTRL_SIDDQ);
+
+ clrbits_le32(&usb->hsicphyctrl1, hsic_ctrl);
+ clrbits_le32(&usb->hsicphyctrl2, hsic_ctrl);
+
+ hsic_ctrl = (((HSIC_CTRL_REFCLKDIV_12 & HSIC_CTRL_REFCLKDIV_MASK)
+ << HSIC_CTRL_REFCLKDIV_SHIFT)
+ | ((HSIC_CTRL_REFCLKSEL & HSIC_CTRL_REFCLKSEL_MASK)
+ << HSIC_CTRL_REFCLKSEL_SHIFT)
+ | HSIC_CTRL_UTMISWRST);
+
+ setbits_le32(&usb->hsicphyctrl1, hsic_ctrl);
+ setbits_le32(&usb->hsicphyctrl2, hsic_ctrl);
+
+ udelay(10);
+
+ clrbits_le32(&usb->hsicphyctrl1, HSIC_CTRL_PHYSWRST |
+ HSIC_CTRL_UTMISWRST);
+
+ clrbits_le32(&usb->hsicphyctrl2, HSIC_CTRL_PHYSWRST |
+ HSIC_CTRL_UTMISWRST);
+
udelay(20);
/* EHCI Ctrl setting */
/* Reset the EHCI host controller. */
static void reset_usb_phy(struct exynos_usb_phy *usb)
{
+ u32 hsic_ctrl;
+
/* HOST_PHY reset */
setbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_PHYSWRST |
HOST_CTRL0_FORCESUSPEND |
HOST_CTRL0_FORCESLEEP);
+ /* HSIC Phy reset */
+ hsic_ctrl = (HSIC_CTRL_FORCESUSPEND |
+ HSIC_CTRL_FORCESLEEP |
+ HSIC_CTRL_SIDDQ |
+ HSIC_CTRL_PHYSWRST);
+
+ setbits_le32(&usb->hsicphyctrl1, hsic_ctrl);
+ setbits_le32(&usb->hsicphyctrl2, hsic_ctrl);
+
set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE);
}
* Create the appropriate control structures to manage
* a new EHCI host controller.
*/
-int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+int ehci_hcd_init(int index, enum usb_init_type init,
+ struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
- struct exynos_ehci *exynos = NULL;
+ struct exynos_ehci *ctx = &exynos;
- exynos = (struct exynos_ehci *)
- kzalloc(sizeof(struct exynos_ehci), GFP_KERNEL);
- if (!exynos) {
- debug("failed to allocate exynos ehci context\n");
- return -ENOMEM;
+#ifdef CONFIG_OF_CONTROL
+ if (exynos_usb_parse_dt(gd->fdt_blob, ctx)) {
+ debug("Unable to parse device tree for ehci-exynos\n");
+ return -ENODEV;
}
+#else
+ ctx->usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
+ ctx->hcd = (struct ehci_hccr *)samsung_get_base_usb_ehci();
+#endif
- exynos_usb_parse_dt(gd->fdt_blob, exynos);
+#ifdef CONFIG_OF_CONTROL
+ /* setup the Vbus gpio here */
+ if (!fdtdec_setup_gpio(&ctx->vbus_gpio))
+ gpio_direction_output(ctx->vbus_gpio.gpio, 1);
+#endif
- setup_usb_phy(exynos->usb);
+ setup_usb_phy(ctx->usb);
- *hccr = (struct ehci_hccr *)(exynos->hcd);
+ board_usb_init(index, init);
+
+ *hccr = ctx->hcd;
*hcor = (struct ehci_hcor *)((uint32_t) *hccr
+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
(uint32_t)*hccr, (uint32_t)*hcor,
(uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
- kfree(exynos);
-
return 0;
}
*/
int ehci_hcd_stop(int index)
{
- struct exynos_ehci *exynos = NULL;
-
- exynos = (struct exynos_ehci *)
- kzalloc(sizeof(struct exynos_ehci), GFP_KERNEL);
- if (!exynos) {
- debug("failed to allocate exynos ehci context\n");
- return -ENOMEM;
- }
-
- exynos_usb_parse_dt(gd->fdt_blob, exynos);
-
- reset_usb_phy(exynos->usb);
+ struct exynos_ehci *ctx = &exynos;
- kfree(exynos);
+ reset_usb_phy(ctx->usb);
return 0;
}