* 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 <fdtdec.h>
+#include <libfdt.h>
+#include <malloc.h>
#include <usb.h>
#include <asm/arch/cpu.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"
-#include "ehci-core.h"
-/* Setup the EHCI host controller. */
-static void setup_usb_phy(struct exynos_usb_phy *usb)
+/* Declare global data pointer */
+DECLARE_GLOBAL_DATA_PTR;
+
+/**
+ * Contains pointers to register base addresses
+ * for the usb controller.
+ */
+struct exynos_ehci {
+ struct exynos_usb_phy *usb;
+ 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)
{
- set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
+ fdt_addr_t addr;
+ unsigned int node;
+ int depth;
- set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN);
+ node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_EHCI);
+ if (node <= 0) {
+ debug("EHCI: Can't get device node for ehci\n");
+ return -ENODEV;
+ }
+
+ /*
+ * Get the base address for EHCI controller from the device node
+ */
+ 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);
+ if (node <= 0) {
+ debug("EHCI: Can't get device node for usb-phy controller\n");
+ return -ENODEV;
+ }
+
+ /*
+ * Get the base address for usbphy from the device node
+ */
+ exynos->usb = (struct exynos_usb_phy *)fdtdec_get_addr(blob, node,
+ "reg");
+ if (exynos->usb == NULL) {
+ debug("Can't get the usbphy register address\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+#endif
+
+static void exynos5_setup_usb_phy(struct exynos_usb_phy *usb)
+{
+ u32 hsic_ctrl;
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_FSEL_MASK |
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 */
EHCICTRL_ENAINCR16);
}
-/* Reset the EHCI host controller. */
-static void reset_usb_phy(struct exynos_usb_phy *usb)
+static void exynos4412_setup_usb_phy(struct exynos4412_usb_phy *usb)
{
+ writel(CLK_24MHZ, &usb->usbphyclk);
+
+ clrbits_le32(&usb->usbphyctrl, (PHYPWR_NORMAL_MASK_HSIC0 |
+ PHYPWR_NORMAL_MASK_HSIC1 | PHYPWR_NORMAL_MASK_PHY1 |
+ PHYPWR_NORMAL_MASK_PHY0));
+
+ setbits_le32(&usb->usbphyrstcon, (RSTCON_HOSTPHY_SWRST | RSTCON_SWRST));
+ udelay(10);
+ clrbits_le32(&usb->usbphyrstcon, (RSTCON_HOSTPHY_SWRST | RSTCON_SWRST));
+}
+
+static void setup_usb_phy(struct exynos_usb_phy *usb)
+{
+ set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
+
+ set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN);
+
+ if (cpu_is_exynos5())
+ exynos5_setup_usb_phy(usb);
+ else if (cpu_is_exynos4())
+ if (proid_is_exynos4412())
+ exynos4412_setup_usb_phy((struct exynos4412_usb_phy *)
+ usb);
+}
+
+static void exynos5_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);
+}
+
+static void exynos4412_reset_usb_phy(struct exynos4412_usb_phy *usb)
+{
+ setbits_le32(&usb->usbphyctrl, (PHYPWR_NORMAL_MASK_HSIC0 |
+ PHYPWR_NORMAL_MASK_HSIC1 | PHYPWR_NORMAL_MASK_PHY1 |
+ PHYPWR_NORMAL_MASK_PHY0));
+}
+
+/* Reset the EHCI host controller. */
+static void reset_usb_phy(struct exynos_usb_phy *usb)
+{
+ if (cpu_is_exynos5())
+ exynos5_reset_usb_phy(usb);
+ else if (cpu_is_exynos4())
+ if (proid_is_exynos4412())
+ exynos4412_reset_usb_phy((struct exynos4412_usb_phy *)
+ usb);
+
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(void)
+int ehci_hcd_init(int index, enum usb_init_type init,
+ struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
- struct exynos_usb_phy *usb;
+ struct exynos_ehci *ctx = &exynos;
+
+#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
- usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
- setup_usb_phy(usb);
+#ifdef CONFIG_OF_CONTROL
+ /* setup the Vbus gpio here */
+ if (fdt_gpio_isvalid(&ctx->vbus_gpio) &&
+ !fdtdec_setup_gpio(&ctx->vbus_gpio))
+ gpio_direction_output(ctx->vbus_gpio.gpio, 1);
+#endif
- hccr = (struct ehci_hccr *)samsung_get_base_usb_ehci();
- hcor = (struct ehci_hcor *)((uint32_t) hccr
- + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+ setup_usb_phy(ctx->usb);
+
+ board_usb_init(index, init);
+
+ *hccr = ctx->hcd;
+ *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)));
+ (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()
+int ehci_hcd_stop(int index)
{
- struct exynos_usb_phy *usb;
+ struct exynos_ehci *ctx = &exynos;
- usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
- reset_usb_phy(usb);
+ reset_usb_phy(ctx->usb);
return 0;
}
projects / u-boot / blobdiff