+// SPDX-License-Identifier: GPL-2.0+
/*
* drivers/usb/gadget/dwc2_udc_otg.c
* Designware DWC2 on-chip full/high speed USB OTG 2.0 device controllers
* Ported to u-boot:
* Marek Szyprowski <m.szyprowski@samsung.com>
* Lukasz Majewski <l.majewski@samsumg.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#undef DEBUG
#include <common.h>
-#include <asm/errno.h>
-#include <linux/list.h>
+#include <clk.h>
+#include <dm.h>
+#include <generic-phy.h>
+#include <log.h>
#include <malloc.h>
+#include <reset.h>
+#include <dm/device_compat.h>
+#include <dm/devres.h>
+#include <linux/bug.h>
+#include <linux/delay.h>
+
+#include <linux/errno.h>
+#include <linux/list.h>
#include <linux/usb/ch9.h>
+#include <linux/usb/otg.h>
#include <linux/usb/gadget.h>
+#include <phys2bus.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
#include <asm/io.h>
#include <asm/mach-types.h>
+#include <power/regulator.h>
+
#include "dwc2_udc_otg_regs.h"
#include "dwc2_udc_otg_priv.h"
-#include <usb/lin_gadget_compat.h>
/***********************************************************/
"WAIT_FOR_NULL_COMPLETE",
};
-#define DRIVER_DESC "DWC2 HS USB OTG Device Driver, (c) Samsung Electronics"
#define DRIVER_VERSION "15 March 2009"
struct dwc2_udc *the_controller;
static const char driver_name[] = "dwc2-udc";
-static const char driver_desc[] = DRIVER_DESC;
static const char ep0name[] = "ep0-control";
/* Max packet size*/
/***********************************************************/
-void __iomem *regs_otg;
struct dwc2_usbotg_reg *reg;
bool dfu_usb_get_reset(void)
return 0;
}
+#if !CONFIG_IS_ENABLED(DM_USB_GADGET)
/*
Register entry point for the peripheral controller driver.
*/
udc_disable(dev);
return 0;
}
+#else /* !CONFIG_IS_ENABLED(DM_USB_GADGET) */
+
+static int dwc2_gadget_start(struct usb_gadget *g,
+ struct usb_gadget_driver *driver)
+{
+ struct dwc2_udc *dev = the_controller;
+
+ debug_cond(DEBUG_SETUP != 0, "%s: %s\n", __func__, "no name");
+
+ if (!driver ||
+ (driver->speed != USB_SPEED_FULL &&
+ driver->speed != USB_SPEED_HIGH) ||
+ !driver->bind || !driver->disconnect || !driver->setup)
+ return -EINVAL;
+
+ if (!dev)
+ return -ENODEV;
+
+ if (dev->driver)
+ return -EBUSY;
+
+ /* first hook up the driver ... */
+ dev->driver = driver;
+
+ debug_cond(DEBUG_SETUP != 0,
+ "Registered gadget driver %s\n", dev->gadget.name);
+ return udc_enable(dev);
+}
+
+static int dwc2_gadget_stop(struct usb_gadget *g)
+{
+ struct dwc2_udc *dev = the_controller;
+
+ if (!dev)
+ return -ENODEV;
+
+ if (!dev->driver)
+ return -EINVAL;
+
+ dev->driver = 0;
+ stop_activity(dev, dev->driver);
+
+ udc_disable(dev);
+
+ return 0;
+}
+
+#endif /* !CONFIG_IS_ENABLED(DM_USB_GADGET) */
/*
* done - retire a request; caller blocked irqs
unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl);
uint32_t dflt_gusbcfg;
uint32_t rx_fifo_sz, tx_fifo_sz, np_tx_fifo_sz;
+ u32 max_hw_ep;
+ int pdata_hw_ep;
debug("Reseting OTG controller\n");
writel((np_tx_fifo_sz << 16) | rx_fifo_sz,
®->gnptxfsiz);
- for (i = 1; i < DWC2_MAX_HW_ENDPOINTS; i++)
- writel((rx_fifo_sz + np_tx_fifo_sz + tx_fifo_sz*(i-1)) |
- tx_fifo_sz << 16, ®->dieptxf[i-1]);
+ /* retrieve the number of IN Endpoints (excluding ep0) */
+ max_hw_ep = (readl(®->ghwcfg4) & GHWCFG4_NUM_IN_EPS_MASK) >>
+ GHWCFG4_NUM_IN_EPS_SHIFT;
+ pdata_hw_ep = dev->pdata->tx_fifo_sz_nb;
+
+ /* tx_fifo_sz_nb should equal to number of IN Endpoint */
+ if (pdata_hw_ep && max_hw_ep != pdata_hw_ep)
+ pr_warn("Got %d hw endpoint but %d tx-fifo-size in array !!\n",
+ max_hw_ep, pdata_hw_ep);
+
+ for (i = 0; i < max_hw_ep; i++) {
+ if (pdata_hw_ep)
+ tx_fifo_sz = dev->pdata->tx_fifo_sz_array[i];
+ writel((rx_fifo_sz + np_tx_fifo_sz + (tx_fifo_sz * i)) |
+ tx_fifo_sz << 16, ®->dieptxf[i]);
+ }
/* Flush the RX FIFO */
writel(RX_FIFO_FLUSH, ®->grstctl);
while (readl(®->grstctl) & RX_FIFO_FLUSH)
static const struct usb_gadget_ops dwc2_udc_ops = {
/* current versions must always be self-powered */
+#if CONFIG_IS_ENABLED(DM_USB_GADGET)
+ .udc_start = dwc2_gadget_start,
+ .udc_stop = dwc2_gadget_stop,
+#endif
};
static struct dwc2_udc memory = {
reg = (struct dwc2_usbotg_reg *)pdata->regs_otg;
- /* regs_otg = (void *)pdata->regs_otg; */
-
dev->gadget.is_dualspeed = 1; /* Hack only*/
dev->gadget.is_otg = 0;
dev->gadget.is_a_peripheral = 0;
ROUND(sizeof(struct usb_ctrlrequest),
CONFIG_SYS_CACHELINE_SIZE));
if (!usb_ctrl) {
- error("No memory available for UDC!\n");
+ pr_err("No memory available for UDC!\n");
return -ENOMEM;
}
return retval;
}
-int usb_gadget_handle_interrupts(int index)
+int dwc2_udc_handle_interrupt(void)
{
u32 intr_status = readl(®->gintsts);
u32 gintmsk = readl(®->gintmsk);
if (intr_status & gintmsk)
return dwc2_udc_irq(1, (void *)the_controller);
+
return 0;
}
+
+#if !CONFIG_IS_ENABLED(DM_USB_GADGET)
+
+int usb_gadget_handle_interrupts(int index)
+{
+ return dwc2_udc_handle_interrupt();
+}
+
+#else /* CONFIG_IS_ENABLED(DM_USB_GADGET) */
+
+struct dwc2_priv_data {
+ struct clk_bulk clks;
+ struct reset_ctl_bulk resets;
+ struct phy_bulk phys;
+ struct udevice *usb33d_supply;
+};
+
+int dm_usb_gadget_handle_interrupts(struct udevice *dev)
+{
+ return dwc2_udc_handle_interrupt();
+}
+
+static int dwc2_phy_setup(struct udevice *dev, struct phy_bulk *phys)
+{
+ int ret;
+
+ ret = generic_phy_get_bulk(dev, phys);
+ if (ret)
+ return ret;
+
+ ret = generic_phy_init_bulk(phys);
+ if (ret)
+ return ret;
+
+ ret = generic_phy_power_on_bulk(phys);
+ if (ret)
+ generic_phy_exit_bulk(phys);
+
+ return ret;
+}
+
+static void dwc2_phy_shutdown(struct udevice *dev, struct phy_bulk *phys)
+{
+ generic_phy_power_off_bulk(phys);
+ generic_phy_exit_bulk(phys);
+}
+
+static int dwc2_udc_otg_ofdata_to_platdata(struct udevice *dev)
+{
+ struct dwc2_plat_otg_data *platdata = dev_get_platdata(dev);
+ ulong drvdata;
+ void (*set_params)(struct dwc2_plat_otg_data *data);
+ int ret;
+
+ if (usb_get_dr_mode(dev->node) != USB_DR_MODE_PERIPHERAL &&
+ usb_get_dr_mode(dev->node) != USB_DR_MODE_OTG) {
+ dev_dbg(dev, "Invalid mode\n");
+ return -ENODEV;
+ }
+
+ platdata->regs_otg = dev_read_addr(dev);
+
+ platdata->rx_fifo_sz = dev_read_u32_default(dev, "g-rx-fifo-size", 0);
+ platdata->np_tx_fifo_sz = dev_read_u32_default(dev,
+ "g-np-tx-fifo-size", 0);
+
+ platdata->tx_fifo_sz_nb =
+ dev_read_size(dev, "g-tx-fifo-size") / sizeof(u32);
+ if (platdata->tx_fifo_sz_nb > DWC2_MAX_HW_ENDPOINTS)
+ platdata->tx_fifo_sz_nb = DWC2_MAX_HW_ENDPOINTS;
+ if (platdata->tx_fifo_sz_nb) {
+ ret = dev_read_u32_array(dev, "g-tx-fifo-size",
+ platdata->tx_fifo_sz_array,
+ platdata->tx_fifo_sz_nb);
+ if (ret)
+ return ret;
+ }
+
+ platdata->force_b_session_valid =
+ dev_read_bool(dev, "u-boot,force-b-session-valid");
+
+ /* force platdata according compatible */
+ drvdata = dev_get_driver_data(dev);
+ if (drvdata) {
+ set_params = (void *)drvdata;
+ set_params(platdata);
+ }
+
+ return 0;
+}
+
+static void dwc2_set_stm32mp1_hsotg_params(struct dwc2_plat_otg_data *p)
+{
+ p->activate_stm_id_vb_detection = true;
+ p->usb_gusbcfg =
+ 0 << 15 /* PHY Low Power Clock sel*/
+ | 0x9 << 10 /* USB Turnaround time (0x9 for HS phy) */
+ | 0 << 9 /* [0:HNP disable,1:HNP enable]*/
+ | 0 << 8 /* [0:SRP disable 1:SRP enable]*/
+ | 0 << 6 /* 0: high speed utmi+, 1: full speed serial*/
+ | 0x7 << 0; /* FS timeout calibration**/
+
+ if (p->force_b_session_valid)
+ p->usb_gusbcfg |= 1 << 30; /* FDMOD: Force device mode */
+}
+
+static int dwc2_udc_otg_reset_init(struct udevice *dev,
+ struct reset_ctl_bulk *resets)
+{
+ int ret;
+
+ ret = reset_get_bulk(dev, resets);
+ if (ret == -ENOTSUPP)
+ return 0;
+
+ if (ret)
+ return ret;
+
+ ret = reset_assert_bulk(resets);
+
+ if (!ret) {
+ udelay(2);
+ ret = reset_deassert_bulk(resets);
+ }
+ if (ret) {
+ reset_release_bulk(resets);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int dwc2_udc_otg_clk_init(struct udevice *dev,
+ struct clk_bulk *clks)
+{
+ int ret;
+
+ ret = clk_get_bulk(dev, clks);
+ if (ret == -ENOSYS)
+ return 0;
+
+ if (ret)
+ return ret;
+
+ ret = clk_enable_bulk(clks);
+ if (ret) {
+ clk_release_bulk(clks);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int dwc2_udc_otg_probe(struct udevice *dev)
+{
+ struct dwc2_plat_otg_data *platdata = dev_get_platdata(dev);
+ struct dwc2_priv_data *priv = dev_get_priv(dev);
+ struct dwc2_usbotg_reg *usbotg_reg =
+ (struct dwc2_usbotg_reg *)platdata->regs_otg;
+ int ret;
+
+ ret = dwc2_udc_otg_clk_init(dev, &priv->clks);
+ if (ret)
+ return ret;
+
+ ret = dwc2_udc_otg_reset_init(dev, &priv->resets);
+ if (ret)
+ return ret;
+
+ ret = dwc2_phy_setup(dev, &priv->phys);
+ if (ret)
+ return ret;
+
+ if (CONFIG_IS_ENABLED(DM_REGULATOR) &&
+ platdata->activate_stm_id_vb_detection &&
+ !platdata->force_b_session_valid) {
+ ret = device_get_supply_regulator(dev, "usb33d-supply",
+ &priv->usb33d_supply);
+ if (ret) {
+ dev_err(dev, "can't get voltage level detector supply\n");
+ return ret;
+ }
+ ret = regulator_set_enable(priv->usb33d_supply, true);
+ if (ret) {
+ dev_err(dev, "can't enable voltage level detector supply\n");
+ return ret;
+ }
+ /* Enable vbus sensing */
+ setbits_le32(&usbotg_reg->ggpio,
+ GGPIO_STM32_OTG_GCCFG_VBDEN |
+ GGPIO_STM32_OTG_GCCFG_IDEN);
+ }
+
+ if (platdata->force_b_session_valid)
+ /* Override B session bits : value and enable */
+ setbits_le32(&usbotg_reg->gotgctl,
+ A_VALOEN | A_VALOVAL | B_VALOEN | B_VALOVAL);
+
+ ret = dwc2_udc_probe(platdata);
+ if (ret)
+ return ret;
+
+ the_controller->driver = 0;
+
+ ret = usb_add_gadget_udc((struct device *)dev, &the_controller->gadget);
+
+ return ret;
+}
+
+static int dwc2_udc_otg_remove(struct udevice *dev)
+{
+ struct dwc2_priv_data *priv = dev_get_priv(dev);
+
+ usb_del_gadget_udc(&the_controller->gadget);
+
+ reset_release_bulk(&priv->resets);
+
+ clk_release_bulk(&priv->clks);
+
+ dwc2_phy_shutdown(dev, &priv->phys);
+
+ return dm_scan_fdt_dev(dev);
+}
+
+static const struct udevice_id dwc2_udc_otg_ids[] = {
+ { .compatible = "snps,dwc2" },
+ { .compatible = "brcm,bcm2835-usb" },
+ { .compatible = "st,stm32mp1-hsotg",
+ .data = (ulong)dwc2_set_stm32mp1_hsotg_params },
+ {},
+};
+
+U_BOOT_DRIVER(dwc2_udc_otg) = {
+ .name = "dwc2-udc-otg",
+ .id = UCLASS_USB_GADGET_GENERIC,
+ .of_match = dwc2_udc_otg_ids,
+ .ofdata_to_platdata = dwc2_udc_otg_ofdata_to_platdata,
+ .probe = dwc2_udc_otg_probe,
+ .remove = dwc2_udc_otg_remove,
+ .platdata_auto_alloc_size = sizeof(struct dwc2_plat_otg_data),
+ .priv_auto_alloc_size = sizeof(struct dwc2_priv_data),
+};
+
+int dwc2_udc_B_session_valid(struct udevice *dev)
+{
+ struct dwc2_plat_otg_data *platdata = dev_get_platdata(dev);
+ struct dwc2_usbotg_reg *usbotg_reg =
+ (struct dwc2_usbotg_reg *)platdata->regs_otg;
+
+ return readl(&usbotg_reg->gotgctl) & B_SESSION_VALID;
+}
+#endif /* CONFIG_IS_ENABLED(DM_USB_GADGET) */
projects / oweals / u-boot.git / blobdiff