2 * Texas Instruments DSPS platforms "glue layer"
4 * Copyright (C) 2012, by Texas Instruments
6 * Based on the am35x "glue layer" code.
8 * This file is part of the Inventra Controller Driver for Linux.
10 * The Inventra Controller Driver for Linux is free software; you
11 * can redistribute it and/or modify it under the terms of the GNU
12 * General Public License version 2 as published by the Free Software
15 * The Inventra Controller Driver for Linux is distributed in
16 * the hope that it will be useful, but WITHOUT ANY WARRANTY;
17 * without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 * License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with The Inventra Controller Driver for Linux ; if not,
23 * write to the Free Software Foundation, Inc., 59 Temple Place,
24 * Suite 330, Boston, MA 02111-1307 USA
26 * musb_dsps.c will be a common file for all the TI DSPS platforms
27 * such as dm64x, dm36x, dm35x, da8x, am35x and ti81x.
28 * For now only ti81x is using this and in future davinci.c, am35x.c
29 * da8xx.c would be merged to this file after testing.
33 #include <linux/err.h>
34 #include <linux/platform_device.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/module.h>
38 #include <linux/usb/usb_phy_generic.h>
39 #include <linux/platform_data/usb-omap.h>
40 #include <linux/sizes.h>
43 #include <linux/of_device.h>
44 #include <linux/of_address.h>
45 #include <linux/of_irq.h>
46 #include <linux/usb/of.h>
48 #include <linux/debugfs.h>
50 #include "musb_core.h"
52 static const struct of_device_id musb_dsps_of_match[];
55 * avoid using musb_readx()/musb_writex() as glue layer should not be
56 * dependent on musb core layer symbols.
58 static inline u8 dsps_readb(const void __iomem *addr, unsigned offset)
60 return __raw_readb(addr + offset);
63 static inline u32 dsps_readl(const void __iomem *addr, unsigned offset)
65 return __raw_readl(addr + offset);
68 static inline void dsps_writeb(void __iomem *addr, unsigned offset, u8 data)
70 __raw_writeb(data, addr + offset);
73 static inline void dsps_writel(void __iomem *addr, unsigned offset, u32 data)
75 __raw_writel(data, addr + offset);
79 * DSPS musb wrapper register offset.
80 * FIXME: This should be expanded to have all the wrapper registers from TI DSPS
83 struct dsps_musb_wrapper {
98 /* bit positions for control */
101 /* bit positions for interrupt */
102 unsigned usb_shift:5;
107 unsigned txep_shift:5;
111 unsigned rxep_shift:5;
115 /* bit positions for phy_utmi */
116 unsigned otg_disable:5;
118 /* bit positions for mode */
120 unsigned iddig_mux:5;
121 /* miscellaneous stuff */
122 unsigned poll_timeout;
126 * register shadow for suspend
128 struct dsps_context {
139 * DSPS glue structure.
143 struct platform_device *musb; /* child musb pdev */
144 const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */
145 struct timer_list timer; /* otg_workaround timer */
146 unsigned long last_timer; /* last timer data for each instance */
147 bool sw_babble_enabled;
149 struct dsps_context context;
150 struct debugfs_regset32 regset;
151 struct dentry *dbgfs_root;
154 static const struct debugfs_reg32 dsps_musb_regs[] = {
155 { "revision", 0x00 },
159 { "intr0_stat", 0x30 },
160 { "intr1_stat", 0x34 },
161 { "intr0_set", 0x38 },
162 { "intr1_set", 0x3c },
166 { "srpfixtime", 0xd4 },
168 { "phy_utmi", 0xe0 },
172 static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
174 struct device *dev = musb->controller;
175 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
178 timeout = jiffies + msecs_to_jiffies(3);
180 /* Never idle if active, or when VBUS timeout is not set as host */
181 if (musb->is_active || (musb->a_wait_bcon == 0 &&
182 musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON)) {
183 dev_dbg(musb->controller, "%s active, deleting timer\n",
184 usb_otg_state_string(musb->xceiv->otg->state));
185 del_timer(&glue->timer);
186 glue->last_timer = jiffies;
189 if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE)
192 if (!musb->g.dev.driver)
195 if (time_after(glue->last_timer, timeout) &&
196 timer_pending(&glue->timer)) {
197 dev_dbg(musb->controller,
198 "Longer idle timer already pending, ignoring...\n");
201 glue->last_timer = timeout;
203 dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
204 usb_otg_state_string(musb->xceiv->otg->state),
205 jiffies_to_msecs(timeout - jiffies));
206 mod_timer(&glue->timer, timeout);
210 * dsps_musb_enable - enable interrupts
212 static void dsps_musb_enable(struct musb *musb)
214 struct device *dev = musb->controller;
215 struct platform_device *pdev = to_platform_device(dev->parent);
216 struct dsps_glue *glue = platform_get_drvdata(pdev);
217 const struct dsps_musb_wrapper *wrp = glue->wrp;
218 void __iomem *reg_base = musb->ctrl_base;
219 u32 epmask, coremask;
221 /* Workaround: setup IRQs through both register sets. */
222 epmask = ((musb->epmask & wrp->txep_mask) << wrp->txep_shift) |
223 ((musb->epmask & wrp->rxep_mask) << wrp->rxep_shift);
224 coremask = (wrp->usb_bitmap & ~MUSB_INTR_SOF);
226 dsps_writel(reg_base, wrp->epintr_set, epmask);
227 dsps_writel(reg_base, wrp->coreintr_set, coremask);
228 /* start polling for ID change in dual-role idle mode */
229 if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
230 musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
231 mod_timer(&glue->timer, jiffies +
232 msecs_to_jiffies(wrp->poll_timeout));
233 dsps_musb_try_idle(musb, 0);
237 * dsps_musb_disable - disable HDRC and flush interrupts
239 static void dsps_musb_disable(struct musb *musb)
241 struct device *dev = musb->controller;
242 struct platform_device *pdev = to_platform_device(dev->parent);
243 struct dsps_glue *glue = platform_get_drvdata(pdev);
244 const struct dsps_musb_wrapper *wrp = glue->wrp;
245 void __iomem *reg_base = musb->ctrl_base;
247 dsps_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap);
248 dsps_writel(reg_base, wrp->epintr_clear,
249 wrp->txep_bitmap | wrp->rxep_bitmap);
250 dsps_writeb(musb->mregs, MUSB_DEVCTL, 0);
253 static void otg_timer(unsigned long _musb)
255 struct musb *musb = (void *)_musb;
256 void __iomem *mregs = musb->mregs;
257 struct device *dev = musb->controller;
258 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
259 const struct dsps_musb_wrapper *wrp = glue->wrp;
262 int skip_session = 0;
265 * We poll because DSPS IP's won't expose several OTG-critical
266 * status change events (from the transceiver) otherwise.
268 devctl = dsps_readb(mregs, MUSB_DEVCTL);
269 dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
270 usb_otg_state_string(musb->xceiv->otg->state));
272 spin_lock_irqsave(&musb->lock, flags);
273 switch (musb->xceiv->otg->state) {
274 case OTG_STATE_A_WAIT_BCON:
275 dsps_writeb(musb->mregs, MUSB_DEVCTL, 0);
279 case OTG_STATE_A_IDLE:
280 case OTG_STATE_B_IDLE:
281 if (devctl & MUSB_DEVCTL_BDEVICE) {
282 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
285 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
288 if (!(devctl & MUSB_DEVCTL_SESSION) && !skip_session)
289 dsps_writeb(mregs, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);
290 mod_timer(&glue->timer, jiffies +
291 msecs_to_jiffies(wrp->poll_timeout));
293 case OTG_STATE_A_WAIT_VFALL:
294 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
295 dsps_writel(musb->ctrl_base, wrp->coreintr_set,
296 MUSB_INTR_VBUSERROR << wrp->usb_shift);
301 spin_unlock_irqrestore(&musb->lock, flags);
304 void dsps_musb_clear_ep_rxintr(struct musb *musb, int epnum)
307 struct dsps_glue *glue = dev_get_drvdata(musb->controller->parent);
308 const struct dsps_musb_wrapper *wrp = glue->wrp;
310 /* musb->lock might already been held */
311 epintr = (1 << epnum) << wrp->rxep_shift;
312 musb_writel(musb->ctrl_base, wrp->epintr_status, epintr);
315 static irqreturn_t dsps_interrupt(int irq, void *hci)
317 struct musb *musb = hci;
318 void __iomem *reg_base = musb->ctrl_base;
319 struct device *dev = musb->controller;
320 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
321 const struct dsps_musb_wrapper *wrp = glue->wrp;
323 irqreturn_t ret = IRQ_NONE;
326 spin_lock_irqsave(&musb->lock, flags);
328 /* Get endpoint interrupts */
329 epintr = dsps_readl(reg_base, wrp->epintr_status);
330 musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift;
331 musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift;
334 dsps_writel(reg_base, wrp->epintr_status, epintr);
336 /* Get usb core interrupts */
337 usbintr = dsps_readl(reg_base, wrp->coreintr_status);
338 if (!usbintr && !epintr)
341 musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift;
343 dsps_writel(reg_base, wrp->coreintr_status, usbintr);
345 dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n",
348 if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) {
349 int drvvbus = dsps_readl(reg_base, wrp->status);
350 void __iomem *mregs = musb->mregs;
351 u8 devctl = dsps_readb(mregs, MUSB_DEVCTL);
354 err = musb->int_usb & MUSB_INTR_VBUSERROR;
357 * The Mentor core doesn't debounce VBUS as needed
358 * to cope with device connect current spikes. This
359 * means it's not uncommon for bus-powered devices
360 * to get VBUS errors during enumeration.
362 * This is a workaround, but newer RTL from Mentor
363 * seems to allow a better one: "re"-starting sessions
364 * without waiting for VBUS to stop registering in
367 musb->int_usb &= ~MUSB_INTR_VBUSERROR;
368 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VFALL;
369 mod_timer(&glue->timer, jiffies +
370 msecs_to_jiffies(wrp->poll_timeout));
371 WARNING("VBUS error workaround (delay coming)\n");
372 } else if (drvvbus) {
374 musb->xceiv->otg->default_a = 1;
375 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
376 del_timer(&glue->timer);
380 musb->xceiv->otg->default_a = 0;
381 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
384 /* NOTE: this must complete power-on within 100 ms. */
385 dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
386 drvvbus ? "on" : "off",
387 usb_otg_state_string(musb->xceiv->otg->state),
393 if (musb->int_tx || musb->int_rx || musb->int_usb)
394 ret |= musb_interrupt(musb);
396 /* Poll for ID change in OTG port mode */
397 if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
398 musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
399 mod_timer(&glue->timer, jiffies +
400 msecs_to_jiffies(wrp->poll_timeout));
402 spin_unlock_irqrestore(&musb->lock, flags);
407 static int dsps_musb_dbg_init(struct musb *musb, struct dsps_glue *glue)
413 sprintf(buf, "%s.dsps", dev_name(musb->controller));
414 root = debugfs_create_dir(buf, NULL);
417 glue->dbgfs_root = root;
419 glue->regset.regs = dsps_musb_regs;
420 glue->regset.nregs = ARRAY_SIZE(dsps_musb_regs);
421 glue->regset.base = musb->ctrl_base;
423 file = debugfs_create_regset32("regdump", S_IRUGO, root, &glue->regset);
425 debugfs_remove_recursive(root);
431 static int dsps_musb_init(struct musb *musb)
433 struct device *dev = musb->controller;
434 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
435 struct platform_device *parent = to_platform_device(dev->parent);
436 const struct dsps_musb_wrapper *wrp = glue->wrp;
437 void __iomem *reg_base;
442 r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control");
443 reg_base = devm_ioremap_resource(dev, r);
444 if (IS_ERR(reg_base))
445 return PTR_ERR(reg_base);
446 musb->ctrl_base = reg_base;
448 /* NOP driver needs change if supporting dual instance */
449 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, "phys", 0);
450 if (IS_ERR(musb->xceiv))
451 return PTR_ERR(musb->xceiv);
453 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
455 /* Returns zero if e.g. not clocked */
456 rev = dsps_readl(reg_base, wrp->revision);
460 usb_phy_init(musb->xceiv);
461 if (IS_ERR(musb->phy)) {
464 ret = phy_init(musb->phy);
467 ret = phy_power_on(musb->phy);
474 setup_timer(&glue->timer, otg_timer, (unsigned long) musb);
477 dsps_writel(reg_base, wrp->control, (1 << wrp->reset));
479 musb->isr = dsps_interrupt;
481 /* reset the otgdisable bit, needed for host mode to work */
482 val = dsps_readl(reg_base, wrp->phy_utmi);
483 val &= ~(1 << wrp->otg_disable);
484 dsps_writel(musb->ctrl_base, wrp->phy_utmi, val);
487 * Check whether the dsps version has babble control enabled.
488 * In latest silicon revision the babble control logic is enabled.
489 * If MUSB_BABBLE_CTL returns 0x4 then we have the babble control
492 val = dsps_readb(musb->mregs, MUSB_BABBLE_CTL);
493 if (val & MUSB_BABBLE_RCV_DISABLE) {
494 glue->sw_babble_enabled = true;
495 val |= MUSB_BABBLE_SW_SESSION_CTRL;
496 dsps_writeb(musb->mregs, MUSB_BABBLE_CTL, val);
499 return dsps_musb_dbg_init(musb, glue);
502 static int dsps_musb_exit(struct musb *musb)
504 struct device *dev = musb->controller;
505 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
507 del_timer_sync(&glue->timer);
508 usb_phy_shutdown(musb->xceiv);
509 phy_power_off(musb->phy);
511 debugfs_remove_recursive(glue->dbgfs_root);
516 static int dsps_musb_set_mode(struct musb *musb, u8 mode)
518 struct device *dev = musb->controller;
519 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
520 const struct dsps_musb_wrapper *wrp = glue->wrp;
521 void __iomem *ctrl_base = musb->ctrl_base;
524 reg = dsps_readl(ctrl_base, wrp->mode);
528 reg &= ~(1 << wrp->iddig);
531 * if we're setting mode to host-only or device-only, we're
532 * going to ignore whatever the PHY sends us and just force
533 * ID pin status by SW
535 reg |= (1 << wrp->iddig_mux);
537 dsps_writel(ctrl_base, wrp->mode, reg);
538 dsps_writel(ctrl_base, wrp->phy_utmi, 0x02);
540 case MUSB_PERIPHERAL:
541 reg |= (1 << wrp->iddig);
544 * if we're setting mode to host-only or device-only, we're
545 * going to ignore whatever the PHY sends us and just force
546 * ID pin status by SW
548 reg |= (1 << wrp->iddig_mux);
550 dsps_writel(ctrl_base, wrp->mode, reg);
553 dsps_writel(ctrl_base, wrp->phy_utmi, 0x02);
556 dev_err(glue->dev, "unsupported mode %d\n", mode);
563 static bool dsps_sw_babble_control(struct musb *musb)
566 bool session_restart = false;
568 babble_ctl = dsps_readb(musb->mregs, MUSB_BABBLE_CTL);
569 dev_dbg(musb->controller, "babble: MUSB_BABBLE_CTL value %x\n",
572 * check line monitor flag to check whether babble is
575 dev_dbg(musb->controller, "STUCK_J is %s\n",
576 babble_ctl & MUSB_BABBLE_STUCK_J ? "set" : "reset");
578 if (babble_ctl & MUSB_BABBLE_STUCK_J) {
582 * babble is due to noise, then set transmit idle (d7 bit)
583 * to resume normal operation
585 babble_ctl = dsps_readb(musb->mregs, MUSB_BABBLE_CTL);
586 babble_ctl |= MUSB_BABBLE_FORCE_TXIDLE;
587 dsps_writeb(musb->mregs, MUSB_BABBLE_CTL, babble_ctl);
589 /* wait till line monitor flag cleared */
590 dev_dbg(musb->controller, "Set TXIDLE, wait J to clear\n");
592 babble_ctl = dsps_readb(musb->mregs, MUSB_BABBLE_CTL);
594 } while ((babble_ctl & MUSB_BABBLE_STUCK_J) && timeout--);
596 /* check whether stuck_at_j bit cleared */
597 if (babble_ctl & MUSB_BABBLE_STUCK_J) {
599 * real babble condition has occurred
600 * restart the controller to start the
603 dev_dbg(musb->controller, "J not cleared, misc (%x)\n",
605 session_restart = true;
608 session_restart = true;
611 return session_restart;
614 static int dsps_musb_recover(struct musb *musb)
616 struct device *dev = musb->controller;
617 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
618 int session_restart = 0;
620 if (glue->sw_babble_enabled)
621 session_restart = dsps_sw_babble_control(musb);
625 return session_restart ? 0 : -EPIPE;
628 /* Similar to am35x, dm81xx support only 32-bit read operation */
629 static void dsps_read_fifo32(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
631 void __iomem *fifo = hw_ep->fifo;
634 ioread32_rep(fifo, dst, len >> 2);
639 /* Read any remaining 1 to 3 bytes */
641 u32 val = musb_readl(fifo, 0);
642 memcpy(dst, &val, len);
646 static struct musb_platform_ops dsps_ops = {
647 .quirks = MUSB_DMA_CPPI41 | MUSB_INDEXED_EP,
648 .init = dsps_musb_init,
649 .exit = dsps_musb_exit,
651 #ifdef CONFIG_USB_TI_CPPI41_DMA
652 .dma_init = cppi41_dma_controller_create,
653 .dma_exit = cppi41_dma_controller_destroy,
655 .enable = dsps_musb_enable,
656 .disable = dsps_musb_disable,
658 .try_idle = dsps_musb_try_idle,
659 .set_mode = dsps_musb_set_mode,
660 .recover = dsps_musb_recover,
661 .clear_ep_rxintr = dsps_musb_clear_ep_rxintr,
664 static u64 musb_dmamask = DMA_BIT_MASK(32);
666 static int get_int_prop(struct device_node *dn, const char *s)
671 ret = of_property_read_u32(dn, s, &val);
677 static int get_musb_port_mode(struct device *dev)
679 enum usb_dr_mode mode;
681 mode = usb_get_dr_mode(dev);
683 case USB_DR_MODE_HOST:
684 return MUSB_PORT_MODE_HOST;
686 case USB_DR_MODE_PERIPHERAL:
687 return MUSB_PORT_MODE_GADGET;
689 case USB_DR_MODE_UNKNOWN:
690 case USB_DR_MODE_OTG:
692 return MUSB_PORT_MODE_DUAL_ROLE;
696 static int dsps_create_musb_pdev(struct dsps_glue *glue,
697 struct platform_device *parent)
699 struct musb_hdrc_platform_data pdata;
700 struct resource resources[2];
701 struct resource *res;
702 struct device *dev = &parent->dev;
703 struct musb_hdrc_config *config;
704 struct platform_device *musb;
705 struct device_node *dn = parent->dev.of_node;
708 memset(resources, 0, sizeof(resources));
709 res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc");
711 dev_err(dev, "failed to get memory.\n");
716 res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc");
718 dev_err(dev, "failed to get irq.\n");
723 /* allocate the child platform device */
724 musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
726 dev_err(dev, "failed to allocate musb device\n");
730 musb->dev.parent = dev;
731 musb->dev.dma_mask = &musb_dmamask;
732 musb->dev.coherent_dma_mask = musb_dmamask;
736 ret = platform_device_add_resources(musb, resources,
737 ARRAY_SIZE(resources));
739 dev_err(dev, "failed to add resources\n");
743 config = devm_kzalloc(&parent->dev, sizeof(*config), GFP_KERNEL);
748 pdata.config = config;
749 pdata.platform_ops = &dsps_ops;
751 config->num_eps = get_int_prop(dn, "mentor,num-eps");
752 config->ram_bits = get_int_prop(dn, "mentor,ram-bits");
753 config->host_port_deassert_reset_at_resume = 1;
754 pdata.mode = get_musb_port_mode(dev);
755 /* DT keeps this entry in mA, musb expects it as per USB spec */
756 pdata.power = get_int_prop(dn, "mentor,power") / 2;
758 ret = of_property_read_u32(dn, "mentor,multipoint", &val);
760 config->multipoint = true;
762 config->maximum_speed = usb_get_maximum_speed(&parent->dev);
763 switch (config->maximum_speed) {
767 case USB_SPEED_SUPER:
768 dev_warn(dev, "ignore incorrect maximum_speed "
769 "(super-speed) setting in dts");
772 config->maximum_speed = USB_SPEED_HIGH;
775 ret = platform_device_add_data(musb, &pdata, sizeof(pdata));
777 dev_err(dev, "failed to add platform_data\n");
781 ret = platform_device_add(musb);
783 dev_err(dev, "failed to register musb device\n");
789 platform_device_put(musb);
793 static int dsps_probe(struct platform_device *pdev)
795 const struct of_device_id *match;
796 const struct dsps_musb_wrapper *wrp;
797 struct dsps_glue *glue;
800 if (!strcmp(pdev->name, "musb-hdrc"))
803 match = of_match_node(musb_dsps_of_match, pdev->dev.of_node);
805 dev_err(&pdev->dev, "fail to get matching of_match struct\n");
810 if (of_device_is_compatible(pdev->dev.of_node, "ti,musb-dm816"))
811 dsps_ops.read_fifo = dsps_read_fifo32;
814 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
818 glue->dev = &pdev->dev;
821 platform_set_drvdata(pdev, glue);
822 pm_runtime_enable(&pdev->dev);
824 ret = pm_runtime_get_sync(&pdev->dev);
826 dev_err(&pdev->dev, "pm_runtime_get_sync FAILED");
830 ret = dsps_create_musb_pdev(glue, pdev);
837 pm_runtime_put(&pdev->dev);
839 pm_runtime_disable(&pdev->dev);
843 static int dsps_remove(struct platform_device *pdev)
845 struct dsps_glue *glue = platform_get_drvdata(pdev);
847 platform_device_unregister(glue->musb);
849 /* disable usbss clocks */
850 pm_runtime_put(&pdev->dev);
851 pm_runtime_disable(&pdev->dev);
856 static const struct dsps_musb_wrapper am33xx_driver_data = {
861 .epintr_clear = 0x40,
862 .epintr_status = 0x30,
863 .coreintr_set = 0x3c,
864 .coreintr_clear = 0x44,
865 .coreintr_status = 0x34,
876 .usb_bitmap = (0x1ff << 0),
880 .txep_bitmap = (0xffff << 0),
883 .rxep_bitmap = (0xfffe << 16),
884 .poll_timeout = 2000, /* ms */
887 static const struct of_device_id musb_dsps_of_match[] = {
888 { .compatible = "ti,musb-am33xx",
889 .data = &am33xx_driver_data, },
890 { .compatible = "ti,musb-dm816",
891 .data = &am33xx_driver_data, },
894 MODULE_DEVICE_TABLE(of, musb_dsps_of_match);
896 #ifdef CONFIG_PM_SLEEP
897 static int dsps_suspend(struct device *dev)
899 struct dsps_glue *glue = dev_get_drvdata(dev);
900 const struct dsps_musb_wrapper *wrp = glue->wrp;
901 struct musb *musb = platform_get_drvdata(glue->musb);
904 del_timer_sync(&glue->timer);
907 /* This can happen if the musb device is in -EPROBE_DEFER */
910 mbase = musb->ctrl_base;
911 glue->context.control = dsps_readl(mbase, wrp->control);
912 glue->context.epintr = dsps_readl(mbase, wrp->epintr_set);
913 glue->context.coreintr = dsps_readl(mbase, wrp->coreintr_set);
914 glue->context.phy_utmi = dsps_readl(mbase, wrp->phy_utmi);
915 glue->context.mode = dsps_readl(mbase, wrp->mode);
916 glue->context.tx_mode = dsps_readl(mbase, wrp->tx_mode);
917 glue->context.rx_mode = dsps_readl(mbase, wrp->rx_mode);
922 static int dsps_resume(struct device *dev)
924 struct dsps_glue *glue = dev_get_drvdata(dev);
925 const struct dsps_musb_wrapper *wrp = glue->wrp;
926 struct musb *musb = platform_get_drvdata(glue->musb);
932 mbase = musb->ctrl_base;
933 dsps_writel(mbase, wrp->control, glue->context.control);
934 dsps_writel(mbase, wrp->epintr_set, glue->context.epintr);
935 dsps_writel(mbase, wrp->coreintr_set, glue->context.coreintr);
936 dsps_writel(mbase, wrp->phy_utmi, glue->context.phy_utmi);
937 dsps_writel(mbase, wrp->mode, glue->context.mode);
938 dsps_writel(mbase, wrp->tx_mode, glue->context.tx_mode);
939 dsps_writel(mbase, wrp->rx_mode, glue->context.rx_mode);
940 if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
941 musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
942 mod_timer(&glue->timer, jiffies +
943 msecs_to_jiffies(wrp->poll_timeout));
949 static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume);
951 static struct platform_driver dsps_usbss_driver = {
953 .remove = dsps_remove,
957 .of_match_table = musb_dsps_of_match,
961 MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer");
962 MODULE_AUTHOR("Ravi B <ravibabu@ti.com>");
963 MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>");
964 MODULE_LICENSE("GPL v2");
966 module_platform_driver(dsps_usbss_driver);