2  * dwc3-omap.c - OMAP Specific Glue layer
4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
18  * 3. The names of the above-listed copyright holders may not be used
45 #include <linux/platform_data/dwc3-omap.h>
46 #include <linux/dma-mapping.h>
149 	u32			reg;  in dwc3_omap_interrupt()  local
151 	spin_lock(&omap->lock);  in dwc3_omap_interrupt()
153 	reg = dwc3_readl(omap->base, USBOTGSS_IRQSTATUS_1);  in dwc3_omap_interrupt()
155 	if (reg & USBOTGSS_IRQ1_DMADISABLECLR) {  in dwc3_omap_interrupt()
156 		dev_dbg(omap->dev, "DMA Disable was Cleared\n");  in dwc3_omap_interrupt()
157 		omap->dma_status = false;  in dwc3_omap_interrupt()
160 	if (reg & USBOTGSS_IRQ1_OEVT)  in dwc3_omap_interrupt()
161 		dev_dbg(omap->dev, "OTG Event\n");  in dwc3_omap_interrupt()
163 	if (reg & USBOTGSS_IRQ1_DRVVBUS_RISE)  in dwc3_omap_interrupt()
164 		dev_dbg(omap->dev, "DRVVBUS Rise\n");  in dwc3_omap_interrupt()
166 	if (reg & USBOTGSS_IRQ1_CHRGVBUS_RISE)  in dwc3_omap_interrupt()
167 		dev_dbg(omap->dev, "CHRGVBUS Rise\n");  in dwc3_omap_interrupt()
169 	if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_RISE)  in dwc3_omap_interrupt()
170 		dev_dbg(omap->dev, "DISCHRGVBUS Rise\n");  in dwc3_omap_interrupt()
172 	if (reg & USBOTGSS_IRQ1_IDPULLUP_RISE)  in dwc3_omap_interrupt()
173 		dev_dbg(omap->dev, "IDPULLUP Rise\n");  in dwc3_omap_interrupt()
175 	if (reg & USBOTGSS_IRQ1_DRVVBUS_FALL)  in dwc3_omap_interrupt()
176 		dev_dbg(omap->dev, "DRVVBUS Fall\n");  in dwc3_omap_interrupt()
178 	if (reg & USBOTGSS_IRQ1_CHRGVBUS_FALL)  in dwc3_omap_interrupt()
179 		dev_dbg(omap->dev, "CHRGVBUS Fall\n");  in dwc3_omap_interrupt()
181 	if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_FALL)  in dwc3_omap_interrupt()
182 		dev_dbg(omap->dev, "DISCHRGVBUS Fall\n");  in dwc3_omap_interrupt()
184 	if (reg & USBOTGSS_IRQ1_IDPULLUP_FALL)  in dwc3_omap_interrupt()
185 		dev_dbg(omap->dev, "IDPULLUP Fall\n");  in dwc3_omap_interrupt()
187 	dwc3_writel(omap->base, USBOTGSS_IRQSTATUS_1, reg);  in dwc3_omap_interrupt()
189 	reg = dwc3_readl(omap->base, USBOTGSS_IRQSTATUS_0);  in dwc3_omap_interrupt()
190 	dwc3_writel(omap->base, USBOTGSS_IRQSTATUS_0, reg);  in dwc3_omap_interrupt()
192 	spin_unlock(&omap->lock);  in dwc3_omap_interrupt()
199 	struct dwc3_omap_data	*pdata = pdev->dev.platform_data;  in dwc3_omap_probe()
205 	int			ret = -ENOMEM;  in dwc3_omap_probe()
208 	u32			reg;  in dwc3_omap_probe()  local
215 		dev_err(&pdev->dev, "not enough memory\n");  in dwc3_omap_probe()
223 		dev_err(&pdev->dev, "missing IRQ resource\n");  in dwc3_omap_probe()
224 		ret = -EINVAL;  in dwc3_omap_probe()
230 		dev_err(&pdev->dev, "missing memory base resource\n");  in dwc3_omap_probe()
231 		ret = -EINVAL;  in dwc3_omap_probe()
235 	base = ioremap_nocache(res->start, resource_size(res));  in dwc3_omap_probe()
237 		dev_err(&pdev->dev, "ioremap failed\n");  in dwc3_omap_probe()
247 		dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");  in dwc3_omap_probe()
253 		dev_err(&pdev->dev, "couldn't allocate dwc3 context memory\n");  in dwc3_omap_probe()
257 	spin_lock_init(&omap->lock);  in dwc3_omap_probe()
258 	dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);  in dwc3_omap_probe()
260 	dwc3->dev.parent = &pdev->dev;  in dwc3_omap_probe()
261 	dwc3->dev.dma_mask = pdev->dev.dma_mask;  in dwc3_omap_probe()
262 	dwc3->dev.dma_parms = pdev->dev.dma_parms;  in dwc3_omap_probe()
263 	omap->resource_size = resource_size(res);  in dwc3_omap_probe()
264 	omap->context	= context;  in dwc3_omap_probe()
265 	omap->dev	= &pdev->dev;  in dwc3_omap_probe()
266 	omap->irq	= irq;  in dwc3_omap_probe()
267 	omap->base	= base;  in dwc3_omap_probe()
268 	omap->dwc3	= dwc3;  in dwc3_omap_probe()
270 	reg = dwc3_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);  in dwc3_omap_probe()
273 		dev_dbg(&pdev->dev, "missing platform data\n");  in dwc3_omap_probe()
275 		switch (pdata->utmi_mode) {  in dwc3_omap_probe()
277 			reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;  in dwc3_omap_probe()
280 			reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;  in dwc3_omap_probe()
283 			dev_dbg(&pdev->dev, "UNKNOWN utmi mode %d\n",  in dwc3_omap_probe()
284 					pdata->utmi_mode);  in dwc3_omap_probe()
288 	dwc3_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, reg);  in dwc3_omap_probe()
291 	reg = dwc3_readl(omap->base, USBOTGSS_SYSCONFIG);  in dwc3_omap_probe()
292 	omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);  in dwc3_omap_probe()
294 	/* Set No-Idle and No-Standby */  in dwc3_omap_probe()
295 	reg &= ~(USBOTGSS_STANDBYMODE_MASK  in dwc3_omap_probe()
298 	reg |= (USBOTGSS_SYSCONFIG_STANDBYMODE(USBOTGSS_STANDBYMODE_NO_STANDBY)  in dwc3_omap_probe()
301 	dwc3_writel(omap->base, USBOTGSS_SYSCONFIG, reg);  in dwc3_omap_probe()
303 	ret = request_irq(omap->irq, dwc3_omap_interrupt, 0,  in dwc3_omap_probe()
304 			"dwc3-omap", omap);  in dwc3_omap_probe()
306 		dev_err(&pdev->dev, "failed to request IRQ #%d --> %d\n",  in dwc3_omap_probe()
307 				omap->irq, ret);  in dwc3_omap_probe()
312 	reg = USBOTGSS_IRQO_COREIRQ_ST;  in dwc3_omap_probe()
313 	dwc3_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, reg);  in dwc3_omap_probe()
315 	reg = (USBOTGSS_IRQ1_OEVT |  in dwc3_omap_probe()
325 	dwc3_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg);  in dwc3_omap_probe()
327 	ret = platform_device_add_resources(dwc3, pdev->resource,  in dwc3_omap_probe()
328 			pdev->num_resources);  in dwc3_omap_probe()
330 		dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");  in dwc3_omap_probe()
336 		dev_err(&pdev->dev, "failed to register dwc3 device\n");  in dwc3_omap_probe()
343 	free_irq(omap->irq, omap);  in dwc3_omap_probe()
346 	kfree(omap->context);  in dwc3_omap_probe()
368 	platform_device_unregister(omap->dwc3);  in dwc3_omap_remove()
370 	dwc3_put_device_id(omap->dwc3->id);  in dwc3_omap_remove()
371 	free_irq(omap->irq, omap);  in dwc3_omap_remove()
372 	iounmap(omap->base);  in dwc3_omap_remove()
374 	kfree(omap->context);  in dwc3_omap_remove()
392 		.name	= "omap-dwc3",
399 MODULE_ALIAS("platform:omap-dwc3");