Add more SPDX-License-Identifier tags

[u-boot] / drivers / usb / musb-new / sunxi.c

diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
index cafb48039e3a6a5aa0f40996591f10dd4b2faa0c..be1d2ec8e41c39aa67c5089a397aa663f2f5e998 100644 (file)
--- a/drivers/usb/musb-new/sunxi.c
+++ b/drivers/usb/musb-new/sunxi.c
@@ -14,11 +14,7 @@
  *
  * This file is part of the Inventra Controller Driver for Linux.
  *
- * The Inventra Controller Driver for Linux is free software; you
- * can redistribute it and/or modify it under the terms of the GNU
- * General Public License version 2 as published by the Free Software
- * Foundation.
- *
+ * SPDX-License-Identifier:    GPL-2.0
  */
 #include <common.h>
 #include <asm/arch/cpu.h>
@@ -26,17 +22,12 @@
 #include <asm/arch/gpio.h>
 #include <asm/arch/usb_phy.h>
 #include <asm-generic/gpio.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+#include <linux/usb/musb.h>
 #include "linux-compat.h"
 #include "musb_core.h"
-#ifdef CONFIG_AXP152_POWER
-#include <axp152.h>
-#endif
-#ifdef CONFIG_AXP209_POWER
-#include <axp209.h>
-#endif
-#ifdef CONFIG_AXP221_POWER
-#include <axp221.h>
-#endif
+#include "musb_uboot.h"
 
 /******************************************************************************
  ******************************************************************************
@@ -170,6 +161,17 @@ static void USBC_ConfigFIFO_Base(void)
        writel(reg_value, SUNXI_SRAMC_BASE + 0x04);
 }
 
+/******************************************************************************
+ * Needed for the DFU polling magic
+ ******************************************************************************/
+
+static u8 last_int_usb;
+
+bool dfu_usb_get_reset(void)
+{
+       return !!(last_int_usb & MUSB_INTR_RESET);
+}
+
 /******************************************************************************
  * MUSB Glue code
  ******************************************************************************/
@@ -181,6 +183,7 @@ static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci)
 
        /* read and flush interrupts */
        musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
+       last_int_usb = musb->int_usb;
        if (musb->int_usb)
                musb_writeb(musb->mregs, MUSB_INTRUSB, musb->int_usb);
        musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
@@ -201,10 +204,11 @@ static bool enabled = false;
 
 static int sunxi_musb_enable(struct musb *musb)
 {
-       int ret;
-
        pr_debug("%s():\n", __func__);
 
+       musb_ep_select(musb->mregs, 0);
+       musb_writeb(musb->mregs, MUSB_FADDR, 0);
+
        if (enabled)
                return 0;
 
@@ -212,17 +216,26 @@ static int sunxi_musb_enable(struct musb *musb)
        musb_writeb(musb->mregs, USBC_REG_o_VEND0, 0);
 
        if (is_host_enabled(musb)) {
-               ret = sunxi_usb_phy_vbus_detect(0);
-               if (ret) {
-                       printf("A charger is plugged into the OTG: ");
-                       return -ENODEV;
+               int id = sunxi_usb_phy_id_detect(0);
+
+               if (id == 1 && sunxi_usb_phy_power_is_on(0))
+                       sunxi_usb_phy_power_off(0);
+
+               if (!sunxi_usb_phy_power_is_on(0)) {
+                       int vbus = sunxi_usb_phy_vbus_detect(0);
+                       if (vbus == 1) {
+                               printf("A charger is plugged into the OTG: ");
+                               return -ENODEV;
+                       }
                }
-               ret = sunxi_usb_phy_id_detect(0);
-               if (ret == 1) {
+
+               if (id == 1) {
                        printf("No host cable detected: ");
                        return -ENODEV;
                }
-               sunxi_usb_phy_power_on(0); /* port power on */
+
+               if (!sunxi_usb_phy_power_is_on(0))
+                       sunxi_usb_phy_power_on(0);
        }
 
        USBC_ForceVbusValidToHigh(musb->mregs);
@@ -238,9 +251,6 @@ static void sunxi_musb_disable(struct musb *musb)
        if (!enabled)
                return;
 
-       if (is_host_enabled(musb))
-               sunxi_usb_phy_power_off(0); /* port power off */
-
        USBC_ForceVbusValidToLow(musb->mregs);
        mdelay(200); /* Wait for the current session to timeout */
 
@@ -277,8 +287,86 @@ static int sunxi_musb_init(struct musb *musb)
        return 0;
 }
 
-const struct musb_platform_ops sunxi_musb_ops = {
+static const struct musb_platform_ops sunxi_musb_ops = {
        .init           = sunxi_musb_init,
        .enable         = sunxi_musb_enable,
        .disable        = sunxi_musb_disable,
 };
+
+static struct musb_hdrc_config musb_config = {
+       .multipoint     = 1,
+       .dyn_fifo       = 1,
+       .num_eps        = 6,
+       .ram_bits       = 11,
+};
+
+static struct musb_hdrc_platform_data musb_plat = {
+#if defined(CONFIG_USB_MUSB_HOST)
+       .mode           = MUSB_HOST,
+#else
+       .mode           = MUSB_PERIPHERAL,
+#endif
+       .config         = &musb_config,
+       .power          = 250,
+       .platform_ops   = &sunxi_musb_ops,
+};
+
+#ifdef CONFIG_USB_MUSB_HOST
+int musb_usb_probe(struct udevice *dev)
+{
+       struct musb_host_data *host = dev_get_priv(dev);
+       struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
+       int ret;
+
+       priv->desc_before_addr = true;
+
+       if (!host->host) {
+               host->host = musb_init_controller(&musb_plat, NULL,
+                                                 (void *)SUNXI_USB0_BASE);
+               if (!host->host)
+                       return -EIO;
+       }
+
+       ret = musb_lowlevel_init(host);
+       if (ret == 0)
+               printf("MUSB OTG\n");
+
+       return ret;
+}
+
+int musb_usb_remove(struct udevice *dev)
+{
+       struct musb_host_data *host = dev_get_priv(dev);
+
+       musb_stop(host->host);
+
+       return 0;
+}
+
+U_BOOT_DRIVER(usb_musb) = {
+       .name   = "sunxi-musb",
+       .id     = UCLASS_USB,
+       .probe = musb_usb_probe,
+       .remove = musb_usb_remove,
+       .ops    = &musb_usb_ops,
+       .platdata_auto_alloc_size = sizeof(struct usb_platdata),
+       .priv_auto_alloc_size = sizeof(struct musb_host_data),
+};
+#endif
+
+void sunxi_musb_board_init(void)
+{
+#ifdef CONFIG_USB_MUSB_HOST
+       struct udevice *dev;
+
+       /*
+        * Bind the driver directly for now as musb linux kernel support is
+        * still pending upstream so our dts files do not have the necessary
+        * nodes yet. TODO: Remove this as soon as the dts nodes are in place
+        * and bind by compatible instead.
+        */
+       device_bind_driver(dm_root(), "sunxi-musb", "sunxi-musb", &dev);
+#else
+       musb_register(&musb_plat, NULL, (void *)SUNXI_USB0_BASE);
+#endif
+}