Add driver model support by using the uclass UCLASS_USB_GADGET_GENERIC.
Disable local usb_gadget_register_driver()/usb_gadget_unregister_driver() implementation which is implemented in udc-core.c when DM_USB_GADGET is enabled.
Replace dm_usb_gadget_handle_interrupts() with handle_interrupts ops when DM_USB_GADGET is enabled.
Disable legacy struct usba_udc controller as controller point is extracted from udevice private data with DM.
Disable legacy usba_udc_probe() to avoid conflict with DM when it's enabled.
Compared to Linux driver only supported devices' DT bindings are included (sorted as Linux driver)
Signed-off-by: Zixun LI admin@hifiphile.com --- drivers/usb/gadget/atmel_usba_udc.c | 144 ++++++++++++++++++++++++++++ drivers/usb/gadget/atmel_usba_udc.h | 3 + include/linux/usb/atmel_usba_udc.h | 2 + 3 files changed, 149 insertions(+)
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index a7b96449f8..a77037a709 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -7,10 +7,14 @@ * Bo Shen voice.shen@atmel.com */
+#include <clk.h> +#include <dm.h> #include <log.h> #include <malloc.h> #include <asm/gpio.h> #include <asm/hardware.h> +#include <dm/device_compat.h> +#include <dm/devres.h> #include <linux/bitops.h> #include <linux/errno.h> #include <linux/list.h> @@ -18,6 +22,14 @@ #include <linux/usb/gadget.h> #include <linux/usb/atmel_usba_udc.h>
+#if CONFIG_IS_ENABLED(DM_USB_GADGET) +#include <mach/atmel_usba_udc.h> + +static int usba_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver); +static int usba_udc_stop(struct usb_gadget *gadget); +#endif /* CONFIG_IS_ENABLED(DM_USB_GADGET) */ + #include "atmel_usba_udc.h"
static int vbus_is_present(struct usba_udc *udc) @@ -528,6 +540,10 @@ static const struct usb_gadget_ops usba_udc_ops = { .wakeup = usba_udc_wakeup, .set_selfpowered = usba_udc_set_selfpowered, .pullup = usba_udc_pullup, +#if CONFIG_IS_ENABLED(DM_USB_GADGET) + .udc_start = usba_udc_start, + .udc_stop = usba_udc_stop, +#endif };
static struct usb_endpoint_descriptor usba_ep0_desc = { @@ -1237,6 +1253,7 @@ static struct usba_ep *usba_udc_pdata(struct usba_platform_data *pdata, return eps; }
+#if !CONFIG_IS_ENABLED(DM_USB_GADGET) static struct usba_udc controller = { .regs = (unsigned *)ATMEL_BASE_UDPHS, .fifo = (unsigned *)ATMEL_BASE_UDPHS_FIFO, @@ -1312,3 +1329,130 @@ int usba_udc_probe(struct usba_platform_data *pdata)
return 0; } + +#else /* !CONFIG_IS_ENABLED(DM_USB_GADGET) */ +struct usba_priv_data { + struct clk_bulk clks; + struct usba_udc udc; +}; + +static int usba_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct usba_udc *udc = to_usba_udc(gadget); + + usba_udc_enable(udc); + + udc->driver = driver; + return 0; +} + +static int usba_udc_stop(struct usb_gadget *gadget) +{ + struct usba_udc *udc = to_usba_udc(gadget); + + udc->driver = NULL; + + usba_udc_disable(udc); + return 0; +} + +static int usba_udc_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 usba_udc_probe(struct udevice *dev) +{ + struct usba_priv_data *priv = dev_get_priv(dev); + struct usba_udc *udc = &priv->udc; + int ret; + + udc->fifo = (void __iomem *)dev_remap_addr_index(dev, FIFO_IOMEM_ID); + if (!udc->fifo) + return -EINVAL; + + udc->regs = (void __iomem *)dev_remap_addr_index(dev, CTRL_IOMEM_ID); + if (!udc->regs) + return -EINVAL; + + ret = usba_udc_clk_init(dev, &priv->clks); + if (ret) + return ret; + + udc->usba_ep = usba_udc_pdata(&pdata, udc); + + udc->gadget.ops = &usba_udc_ops; + udc->gadget.speed = USB_SPEED_HIGH, + udc->gadget.is_dualspeed = 1, + udc->gadget.name = "atmel_usba_udc", + + ret = usb_add_gadget_udc((struct device *)dev, &udc->gadget); + if (ret) + goto err; + + return 0; +err: + free(udc->usba_ep); + + clk_release_bulk(&priv->clks); + + return ret; +} + +static int usba_udc_remove(struct udevice *dev) +{ + struct usba_priv_data *priv = dev_get_priv(dev); + + usb_del_gadget_udc(&priv->udc.gadget); + + free(priv->udc.usba_ep); + + clk_release_bulk(&priv->clks); + + return dm_scan_fdt_dev(dev); +} + +static int usba_udc_handle_interrupts(struct udevice *dev) +{ + struct usba_priv_data *priv = dev_get_priv(dev); + + return usba_udc_irq(&priv->udc); +} + +static const struct usb_gadget_generic_ops usba_udc_gadget_ops = { + .handle_interrupts = usba_udc_handle_interrupts, +}; + +static const struct udevice_id usba_udc_ids[] = { + { .compatible = "atmel,at91sam9rl-udc" }, + { .compatible = "atmel,at91sam9g45-udc" }, + { .compatible = "atmel,sama5d3-udc" }, + {} +}; + +U_BOOT_DRIVER(atmel_usba_udc) = { + .name = "atmel_usba_udc", + .id = UCLASS_USB_GADGET_GENERIC, + .of_match = usba_udc_ids, + .ops = &usba_udc_gadget_ops, + .probe = usba_udc_probe, + .remove = usba_udc_remove, + .priv_auto = sizeof(struct usba_priv_data), +}; +#endif /* !CONFIG_IS_ENABLED(DM_USB_GADGET) */ diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h index f6cb48c1cf..7f5e98f6c4 100644 --- a/drivers/usb/gadget/atmel_usba_udc.h +++ b/drivers/usb/gadget/atmel_usba_udc.h @@ -211,6 +211,9 @@ #define EP0_EPT_SIZE USBA_EPT_SIZE_64 #define EP0_NR_BANKS 1
+#define FIFO_IOMEM_ID 0 +#define CTRL_IOMEM_ID 1 + #define DBG_ERR 0x0001 /* report all error returns */ #define DBG_HW 0x0002 /* debug hardware initialization */ #define DBG_GADGET 0x0004 /* calls to/from gadget driver */ diff --git a/include/linux/usb/atmel_usba_udc.h b/include/linux/usb/atmel_usba_udc.h index c1c810759c..37c4f21849 100644 --- a/include/linux/usb/atmel_usba_udc.h +++ b/include/linux/usb/atmel_usba_udc.h @@ -20,6 +20,8 @@ struct usba_platform_data { struct usba_ep_data *ep; };
+#if !CONFIG_IS_ENABLED(DM_USB_GADGET) extern int usba_udc_probe(struct usba_platform_data *pdata); +#endif
#endif /* __LINUX_USB_USBA_H */