diff options
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-omap.c | 128 |
1 files changed, 39 insertions, 89 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 31a2aa3..30d7210 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -17,6 +17,7 @@ #include <common.h> #include <malloc.h> #include <asm/io.h> +#include <dwc3-omap-uboot.h> #include <linux/usb/dwc3-omap.h> #include <linux/ioport.h> @@ -120,6 +121,8 @@ struct dwc3_omap { u32 dma_status:1; }; +struct dwc3_omap *omap; + static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) { return readl(base + offset); @@ -278,15 +281,6 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) return IRQ_HANDLED; } -static int dwc3_omap_remove_core(struct device *dev, void *c) -{ - struct platform_device *pdev = to_platform_device(dev); - - of_device_unregister(pdev); - - return 0; -} - static void dwc3_omap_enable_irqs(struct dwc3_omap *omap) { u32 reg; @@ -315,12 +309,8 @@ static void dwc3_omap_disable_irqs(struct dwc3_omap *omap) dwc3_omap_write_irq0_set(omap, 0x00); } -static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32); - static void dwc3_omap_map_offset(struct dwc3_omap *omap) { - struct device_node *node = omap->dev->of_node; - /* * Differentiate between OMAP5 and AM437x. * @@ -329,25 +319,21 @@ static void dwc3_omap_map_offset(struct dwc3_omap *omap) * * Using dt compatible to differentiate AM437x. */ - if (of_device_is_compatible(node, "ti,am437x-dwc3")) { - omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; - omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; - omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; - omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; - omap->debug_offset = USBOTGSS_DEBUG_OFFSET; - } +#ifdef CONFIG_AM43XX + omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; + omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; + omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; + omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; + omap->debug_offset = USBOTGSS_DEBUG_OFFSET; +#endif } -static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) +static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap, int utmi_mode) { u32 reg; - struct device_node *node = omap->dev->of_node; - int utmi_mode = 0; reg = dwc3_omap_read_utmi_status(omap); - of_property_read_u32(node, "utmi-mode", &utmi_mode); - switch (utmi_mode) { case DWC3_OMAP_UTMI_MODE_SW: reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE; @@ -362,95 +348,59 @@ static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) dwc3_omap_write_utmi_status(omap, reg); } -static int dwc3_omap_probe(struct platform_device *pdev) +/** + * dwc3_omap_uboot_init - dwc3 omap uboot initialization code + * @dev: struct dwc3_omap_device containing initialization data + * + * Entry point for dwc3 omap driver (equivalent to dwc3_omap_probe in linux + * kernel driver). Pointer to dwc3_omap_device should be passed containing + * base address and other initialization data. Returns '0' on success and + * a negative value on failure. + * + * Generally called from board_usb_init() implemented in board file. + */ +int dwc3_omap_uboot_init(struct dwc3_omap_device *omap_dev) { - struct device_node *node = pdev->dev.of_node; - - struct dwc3_omap *omap; - struct resource *res; - struct device *dev = &pdev->dev; - - int ret; u32 reg; - - void __iomem *base; - - if (!node) { - dev_err(dev, "device node not found\n"); - return -EINVAL; - } + struct device *dev; omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); if (!omap) return -ENOMEM; - platform_set_drvdata(pdev, omap); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - omap->dev = dev; - omap->base = base; - dev->dma_mask = &dwc3_omap_dma_mask; + omap->base = omap_dev->base; dwc3_omap_map_offset(omap); - dwc3_omap_set_utmi_mode(omap); + dwc3_omap_set_utmi_mode(omap, omap_dev->utmi_mode); /* check the DMA Status */ reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE); - dwc3_omap_enable_irqs(omap); + dwc3_omap_set_mailbox(omap, omap_dev->vbus_id_status); - ret = of_platform_populate(node, NULL, NULL, dev); - if (ret) { - dev_err(&pdev->dev, "failed to create dwc3 core\n"); - goto err1; - } + dwc3_omap_enable_irqs(omap); return 0; - -err1: - dwc3_omap_disable_irqs(omap); - -err0: - return ret; } -static int dwc3_omap_remove(struct platform_device *pdev) +/** + * dwc3_omap_uboot_exit - dwc3 omap uboot cleanup code + * @index: index of this controller + * + * Performs cleanup of memory allocated in dwc3_omap_uboot_init + * (equivalent to dwc3_omap_remove in linux). + * + * Generally called from board file. + */ +void dwc3_omap_uboot_exit(void) { - struct dwc3_omap *omap = platform_get_drvdata(pdev); - dwc3_omap_disable_irqs(omap); - device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); + kfree(omap); return 0; } -static const struct of_device_id of_dwc3_match[] = { - { - .compatible = "ti,dwc3" - }, - { - .compatible = "ti,am437x-dwc3" - }, - { }, -}; -MODULE_DEVICE_TABLE(of, of_dwc3_match); - -static struct platform_driver dwc3_omap_driver = { - .probe = dwc3_omap_probe, - .remove = dwc3_omap_remove, - .driver = { - .name = "omap-dwc3", - .of_match_table = of_dwc3_match, - }, -}; - -module_platform_driver(dwc3_omap_driver); - MODULE_ALIAS("platform:omap-dwc3"); MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); MODULE_LICENSE("GPL v2"); |