+// SPDX-License-Identifier: GPL-2.0+
/*
* SAMSUNG EXYNOS 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 <dm.h>
#include <fdtdec.h>
-#include <libfdt.h>
+#include <log.h>
+#include <linux/delay.h>
+#include <linux/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-generic/errno.h>
+#include <asm/gpio.h>
+#include <linux/errno.h>
#include <linux/compat.h>
#include "ehci.h"
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
+struct exynos_ehci_platdata {
+ struct usb_platdata usb_plat;
+ fdt_addr_t hcd_base;
+ fdt_addr_t phy_base;
+ struct gpio_desc vbus_gpio;
+};
+
/**
* Contains pointers to register base addresses
* for the usb controller.
*/
struct exynos_ehci {
+ struct ehci_ctrl ctrl;
struct exynos_usb_phy *usb;
struct ehci_hccr *hcd;
};
-static struct exynos_ehci exynos;
-
-#ifdef CONFIG_OF_CONTROL
-static int exynos_usb_parse_dt(const void *blob, struct exynos_ehci *exynos)
+static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
{
- fdt_addr_t addr;
+ struct exynos_ehci_platdata *plat = dev_get_platdata(dev);
+ const void *blob = gd->fdt_blob;
unsigned int node;
int depth;
- 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
+ * Get the base address for XHCI 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");
+ plat->hcd_base = devfdt_get_addr(dev);
+ if (plat->hcd_base == FDT_ADDR_T_NONE) {
+ debug("Can't get the XHCI register base address\n");
return -ENXIO;
}
- exynos->hcd = (struct ehci_hccr *)addr;
-
depth = 0;
- node = fdtdec_next_compatible_subnode(blob, node,
- COMPAT_SAMSUNG_EXYNOS_USB_PHY, &depth);
+ node = fdtdec_next_compatible_subnode(blob, dev_of_offset(dev),
+ COMPAT_SAMSUNG_EXYNOS_USB_PHY, &depth);
if (node <= 0) {
- debug("EHCI: Can't get device node for usb-phy controller\n");
+ debug("XHCI: Can't get device node for usb3-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) {
+ plat->phy_base = fdtdec_get_addr(blob, node, "reg");
+ if (plat->phy_base == FDT_ADDR_T_NONE) {
debug("Can't get the usbphy register address\n");
return -ENXIO;
}
+ /* Vbus gpio */
+ gpio_request_by_name(dev, "samsung,vbus-gpio", 0,
+ &plat->vbus_gpio, GPIOD_IS_OUT);
+
return 0;
}
-#endif
-/* Setup the EHCI host controller. */
-static void setup_usb_phy(struct exynos_usb_phy *usb)
+static void exynos5_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);
+ 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);
- set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE);
+ /* 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);
}
-/*
- * EHCI-initialization
- * 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)
+static void exynos4412_reset_usb_phy(struct exynos4412_usb_phy *usb)
{
- struct exynos_ehci *ctx = &exynos;
+ setbits_le32(&usb->usbphyctrl, (PHYPWR_NORMAL_MASK_HSIC0 |
+ PHYPWR_NORMAL_MASK_HSIC1 | PHYPWR_NORMAL_MASK_PHY1 |
+ PHYPWR_NORMAL_MASK_PHY0));
+}
-#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
+/* 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);
- setup_usb_phy(ctx->usb);
+ set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE);
+}
+
+static int ehci_usb_probe(struct udevice *dev)
+{
+ struct exynos_ehci_platdata *plat = dev_get_platdata(dev);
+ struct exynos_ehci *ctx = dev_get_priv(dev);
+ struct ehci_hcor *hcor;
- *hccr = ctx->hcd;
- *hcor = (struct ehci_hcor *)((uint32_t) *hccr
- + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
+ ctx->hcd = (struct ehci_hccr *)plat->hcd_base;
+ ctx->usb = (struct exynos_usb_phy *)plat->phy_base;
- 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)));
+ /* setup the Vbus gpio here */
+ if (dm_gpio_is_valid(&plat->vbus_gpio))
+ dm_gpio_set_value(&plat->vbus_gpio, 1);
- return 0;
+ setup_usb_phy(ctx->usb);
+ hcor = (struct ehci_hcor *)((uint32_t)ctx->hcd +
+ HC_LENGTH(ehci_readl(&ctx->hcd->cr_capbase)));
+
+ return ehci_register(dev, ctx->hcd, hcor, NULL, 0, USB_INIT_HOST);
}
-/*
- * Destroy the appropriate control structures corresponding
- * the EHCI host controller.
- */
-int ehci_hcd_stop(int index)
+static int ehci_usb_remove(struct udevice *dev)
{
- struct exynos_ehci *ctx = &exynos;
+ struct exynos_ehci *ctx = dev_get_priv(dev);
+ int ret;
+ ret = ehci_deregister(dev);
+ if (ret)
+ return ret;
reset_usb_phy(ctx->usb);
return 0;
}
+
+static const struct udevice_id ehci_usb_ids[] = {
+ { .compatible = "samsung,exynos-ehci" },
+ { }
+};
+
+U_BOOT_DRIVER(usb_ehci) = {
+ .name = "ehci_exynos",
+ .id = UCLASS_USB,
+ .of_match = ehci_usb_ids,
+ .ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
+ .probe = ehci_usb_probe,
+ .remove = ehci_usb_remove,
+ .ops = &ehci_usb_ops,
+ .priv_auto_alloc_size = sizeof(struct exynos_ehci),
+ .platdata_auto_alloc_size = sizeof(struct exynos_ehci_platdata),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
projects / oweals / u-boot.git / blobdiff