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 * DSPS musb wrapper register offset.
56 * FIXME: This should be expanded to have all the wrapper registers from TI DSPS
59 struct dsps_musb_wrapper {
74 /* bit positions for control */
77 /* bit positions for interrupt */
83 unsigned txep_shift:5;
87 unsigned rxep_shift:5;
91 /* bit positions for phy_utmi */
92 unsigned otg_disable:5;
94 /* bit positions for mode */
97 /* miscellaneous stuff */
98 unsigned poll_timeout;
102 * register shadow for suspend
104 struct dsps_context {
115 * DSPS glue structure.
119 struct platform_device *musb; /* child musb pdev */
120 const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */
121 struct timer_list timer; /* otg_workaround timer */
122 unsigned long last_timer; /* last timer data for each instance */
123 bool sw_babble_enabled;
125 struct dsps_context context;
126 struct debugfs_regset32 regset;
127 struct dentry *dbgfs_root;
130 static const struct debugfs_reg32 dsps_musb_regs[] = {
131 { "revision", 0x00 },
135 { "intr0_stat", 0x30 },
136 { "intr1_stat", 0x34 },
137 { "intr0_set", 0x38 },
138 { "intr1_set", 0x3c },
142 { "srpfixtime", 0xd4 },
144 { "phy_utmi", 0xe0 },
149 * dsps_musb_enable - enable interrupts
151 static void dsps_musb_enable(struct musb *musb)
153 struct device *dev = musb->controller;
154 struct platform_device *pdev = to_platform_device(dev->parent);
155 struct dsps_glue *glue = platform_get_drvdata(pdev);
156 const struct dsps_musb_wrapper *wrp = glue->wrp;
157 void __iomem *reg_base = musb->ctrl_base;
158 u32 epmask, coremask;
160 /* Workaround: setup IRQs through both register sets. */
161 epmask = ((musb->epmask & wrp->txep_mask) << wrp->txep_shift) |
162 ((musb->epmask & wrp->rxep_mask) << wrp->rxep_shift);
163 coremask = (wrp->usb_bitmap & ~MUSB_INTR_SOF);
165 musb_writel(reg_base, wrp->epintr_set, epmask);
166 musb_writel(reg_base, wrp->coreintr_set, coremask);
167 /* start polling for ID change in dual-role idle mode */
168 if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
169 musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
170 mod_timer(&glue->timer, jiffies +
171 msecs_to_jiffies(wrp->poll_timeout));
175 * dsps_musb_disable - disable HDRC and flush interrupts
177 static void dsps_musb_disable(struct musb *musb)
179 struct device *dev = musb->controller;
180 struct platform_device *pdev = to_platform_device(dev->parent);
181 struct dsps_glue *glue = platform_get_drvdata(pdev);
182 const struct dsps_musb_wrapper *wrp = glue->wrp;
183 void __iomem *reg_base = musb->ctrl_base;
185 musb_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap);
186 musb_writel(reg_base, wrp->epintr_clear,
187 wrp->txep_bitmap | wrp->rxep_bitmap);
188 del_timer_sync(&glue->timer);
189 musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
192 /* Caller must take musb->lock */
193 static int dsps_check_status(struct musb *musb, void *unused)
195 void __iomem *mregs = musb->mregs;
196 struct device *dev = musb->controller;
197 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
198 const struct dsps_musb_wrapper *wrp = glue->wrp;
200 int skip_session = 0;
203 * We poll because DSPS IP's won't expose several OTG-critical
204 * status change events (from the transceiver) otherwise.
206 devctl = musb_readb(mregs, MUSB_DEVCTL);
207 dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
208 usb_otg_state_string(musb->xceiv->otg->state));
210 switch (musb->xceiv->otg->state) {
211 case OTG_STATE_A_WAIT_VRISE:
212 mod_timer(&glue->timer, jiffies +
213 msecs_to_jiffies(wrp->poll_timeout));
215 case OTG_STATE_A_WAIT_BCON:
216 musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
220 case OTG_STATE_A_IDLE:
221 case OTG_STATE_B_IDLE:
222 if (devctl & MUSB_DEVCTL_BDEVICE) {
223 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
226 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
229 if (!(devctl & MUSB_DEVCTL_SESSION) && !skip_session)
230 musb_writeb(mregs, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);
231 mod_timer(&glue->timer, jiffies +
232 msecs_to_jiffies(wrp->poll_timeout));
234 case OTG_STATE_A_WAIT_VFALL:
235 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
236 musb_writel(musb->ctrl_base, wrp->coreintr_set,
237 MUSB_INTR_VBUSERROR << wrp->usb_shift);
246 static void otg_timer(unsigned long _musb)
248 struct musb *musb = (void *)_musb;
249 struct device *dev = musb->controller;
253 err = pm_runtime_get(dev);
254 if ((err != -EINPROGRESS) && err < 0) {
255 dev_err(dev, "Poll could not pm_runtime_get: %i\n", err);
256 pm_runtime_put_noidle(dev);
261 spin_lock_irqsave(&musb->lock, flags);
262 err = musb_queue_resume_work(musb, dsps_check_status, NULL);
264 dev_err(dev, "%s resume work: %i\n", __func__, err);
265 spin_unlock_irqrestore(&musb->lock, flags);
266 pm_runtime_mark_last_busy(dev);
267 pm_runtime_put_autosuspend(dev);
270 void dsps_musb_clear_ep_rxintr(struct musb *musb, int epnum)
273 struct dsps_glue *glue = dev_get_drvdata(musb->controller->parent);
274 const struct dsps_musb_wrapper *wrp = glue->wrp;
276 /* musb->lock might already been held */
277 epintr = (1 << epnum) << wrp->rxep_shift;
278 musb_writel(musb->ctrl_base, wrp->epintr_status, epintr);
281 static irqreturn_t dsps_interrupt(int irq, void *hci)
283 struct musb *musb = hci;
284 void __iomem *reg_base = musb->ctrl_base;
285 struct device *dev = musb->controller;
286 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
287 const struct dsps_musb_wrapper *wrp = glue->wrp;
289 irqreturn_t ret = IRQ_NONE;
292 spin_lock_irqsave(&musb->lock, flags);
294 /* Get endpoint interrupts */
295 epintr = musb_readl(reg_base, wrp->epintr_status);
296 musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift;
297 musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift;
300 musb_writel(reg_base, wrp->epintr_status, epintr);
302 /* Get usb core interrupts */
303 usbintr = musb_readl(reg_base, wrp->coreintr_status);
304 if (!usbintr && !epintr)
307 musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift;
309 musb_writel(reg_base, wrp->coreintr_status, usbintr);
311 dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n",
314 if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) {
315 int drvvbus = musb_readl(reg_base, wrp->status);
316 void __iomem *mregs = musb->mregs;
317 u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
320 err = musb->int_usb & MUSB_INTR_VBUSERROR;
323 * The Mentor core doesn't debounce VBUS as needed
324 * to cope with device connect current spikes. This
325 * means it's not uncommon for bus-powered devices
326 * to get VBUS errors during enumeration.
328 * This is a workaround, but newer RTL from Mentor
329 * seems to allow a better one: "re"-starting sessions
330 * without waiting for VBUS to stop registering in
333 musb->int_usb &= ~MUSB_INTR_VBUSERROR;
334 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VFALL;
335 mod_timer(&glue->timer, jiffies +
336 msecs_to_jiffies(wrp->poll_timeout));
337 WARNING("VBUS error workaround (delay coming)\n");
338 } else if (drvvbus) {
340 musb->xceiv->otg->default_a = 1;
341 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
342 mod_timer(&glue->timer, jiffies +
343 msecs_to_jiffies(wrp->poll_timeout));
347 musb->xceiv->otg->default_a = 0;
348 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
351 /* NOTE: this must complete power-on within 100 ms. */
352 dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
353 drvvbus ? "on" : "off",
354 usb_otg_state_string(musb->xceiv->otg->state),
360 if (musb->int_tx || musb->int_rx || musb->int_usb)
361 ret |= musb_interrupt(musb);
363 /* Poll for ID change and connect */
364 switch (musb->xceiv->otg->state) {
365 case OTG_STATE_B_IDLE:
366 case OTG_STATE_A_WAIT_BCON:
367 mod_timer(&glue->timer, jiffies +
368 msecs_to_jiffies(wrp->poll_timeout));
375 spin_unlock_irqrestore(&musb->lock, flags);
380 static int dsps_musb_dbg_init(struct musb *musb, struct dsps_glue *glue)
386 sprintf(buf, "%s.dsps", dev_name(musb->controller));
387 root = debugfs_create_dir(buf, NULL);
390 glue->dbgfs_root = root;
392 glue->regset.regs = dsps_musb_regs;
393 glue->regset.nregs = ARRAY_SIZE(dsps_musb_regs);
394 glue->regset.base = musb->ctrl_base;
396 file = debugfs_create_regset32("regdump", S_IRUGO, root, &glue->regset);
398 debugfs_remove_recursive(root);
404 static int dsps_musb_init(struct musb *musb)
406 struct device *dev = musb->controller;
407 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
408 struct platform_device *parent = to_platform_device(dev->parent);
409 const struct dsps_musb_wrapper *wrp = glue->wrp;
410 void __iomem *reg_base;
415 r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control");
416 reg_base = devm_ioremap_resource(dev, r);
417 if (IS_ERR(reg_base))
418 return PTR_ERR(reg_base);
419 musb->ctrl_base = reg_base;
421 /* NOP driver needs change if supporting dual instance */
422 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, "phys", 0);
423 if (IS_ERR(musb->xceiv))
424 return PTR_ERR(musb->xceiv);
426 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
428 /* Returns zero if e.g. not clocked */
429 rev = musb_readl(reg_base, wrp->revision);
433 usb_phy_init(musb->xceiv);
434 if (IS_ERR(musb->phy)) {
437 ret = phy_init(musb->phy);
440 ret = phy_power_on(musb->phy);
447 setup_timer(&glue->timer, otg_timer, (unsigned long) musb);
450 musb_writel(reg_base, wrp->control, (1 << wrp->reset));
452 musb->isr = dsps_interrupt;
454 /* reset the otgdisable bit, needed for host mode to work */
455 val = musb_readl(reg_base, wrp->phy_utmi);
456 val &= ~(1 << wrp->otg_disable);
457 musb_writel(musb->ctrl_base, wrp->phy_utmi, val);
460 * Check whether the dsps version has babble control enabled.
461 * In latest silicon revision the babble control logic is enabled.
462 * If MUSB_BABBLE_CTL returns 0x4 then we have the babble control
465 val = musb_readb(musb->mregs, MUSB_BABBLE_CTL);
466 if (val & MUSB_BABBLE_RCV_DISABLE) {
467 glue->sw_babble_enabled = true;
468 val |= MUSB_BABBLE_SW_SESSION_CTRL;
469 musb_writeb(musb->mregs, MUSB_BABBLE_CTL, val);
472 mod_timer(&glue->timer, jiffies +
473 msecs_to_jiffies(glue->wrp->poll_timeout));
475 return dsps_musb_dbg_init(musb, glue);
478 static int dsps_musb_exit(struct musb *musb)
480 struct device *dev = musb->controller;
481 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
483 del_timer_sync(&glue->timer);
484 usb_phy_shutdown(musb->xceiv);
485 phy_power_off(musb->phy);
487 debugfs_remove_recursive(glue->dbgfs_root);
492 static int dsps_musb_set_mode(struct musb *musb, u8 mode)
494 struct device *dev = musb->controller;
495 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
496 const struct dsps_musb_wrapper *wrp = glue->wrp;
497 void __iomem *ctrl_base = musb->ctrl_base;
500 reg = musb_readl(ctrl_base, wrp->mode);
504 reg &= ~(1 << wrp->iddig);
507 * if we're setting mode to host-only or device-only, we're
508 * going to ignore whatever the PHY sends us and just force
509 * ID pin status by SW
511 reg |= (1 << wrp->iddig_mux);
513 musb_writel(ctrl_base, wrp->mode, reg);
514 musb_writel(ctrl_base, wrp->phy_utmi, 0x02);
516 case MUSB_PERIPHERAL:
517 reg |= (1 << wrp->iddig);
520 * if we're setting mode to host-only or device-only, we're
521 * going to ignore whatever the PHY sends us and just force
522 * ID pin status by SW
524 reg |= (1 << wrp->iddig_mux);
526 musb_writel(ctrl_base, wrp->mode, reg);
529 musb_writel(ctrl_base, wrp->phy_utmi, 0x02);
532 dev_err(glue->dev, "unsupported mode %d\n", mode);
539 static bool dsps_sw_babble_control(struct musb *musb)
542 bool session_restart = false;
544 babble_ctl = musb_readb(musb->mregs, MUSB_BABBLE_CTL);
545 dev_dbg(musb->controller, "babble: MUSB_BABBLE_CTL value %x\n",
548 * check line monitor flag to check whether babble is
551 dev_dbg(musb->controller, "STUCK_J is %s\n",
552 babble_ctl & MUSB_BABBLE_STUCK_J ? "set" : "reset");
554 if (babble_ctl & MUSB_BABBLE_STUCK_J) {
558 * babble is due to noise, then set transmit idle (d7 bit)
559 * to resume normal operation
561 babble_ctl = musb_readb(musb->mregs, MUSB_BABBLE_CTL);
562 babble_ctl |= MUSB_BABBLE_FORCE_TXIDLE;
563 musb_writeb(musb->mregs, MUSB_BABBLE_CTL, babble_ctl);
565 /* wait till line monitor flag cleared */
566 dev_dbg(musb->controller, "Set TXIDLE, wait J to clear\n");
568 babble_ctl = musb_readb(musb->mregs, MUSB_BABBLE_CTL);
570 } while ((babble_ctl & MUSB_BABBLE_STUCK_J) && timeout--);
572 /* check whether stuck_at_j bit cleared */
573 if (babble_ctl & MUSB_BABBLE_STUCK_J) {
575 * real babble condition has occurred
576 * restart the controller to start the
579 dev_dbg(musb->controller, "J not cleared, misc (%x)\n",
581 session_restart = true;
584 session_restart = true;
587 return session_restart;
590 static int dsps_musb_recover(struct musb *musb)
592 struct device *dev = musb->controller;
593 struct dsps_glue *glue = dev_get_drvdata(dev->parent);
594 int session_restart = 0;
596 if (glue->sw_babble_enabled)
597 session_restart = dsps_sw_babble_control(musb);
601 return session_restart ? 0 : -EPIPE;
604 /* Similar to am35x, dm81xx support only 32-bit read operation */
605 static void dsps_read_fifo32(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
607 void __iomem *fifo = hw_ep->fifo;
610 ioread32_rep(fifo, dst, len >> 2);
615 /* Read any remaining 1 to 3 bytes */
617 u32 val = musb_readl(fifo, 0);
618 memcpy(dst, &val, len);
622 static struct musb_platform_ops dsps_ops = {
623 .quirks = MUSB_DMA_CPPI41 | MUSB_INDEXED_EP,
624 .init = dsps_musb_init,
625 .exit = dsps_musb_exit,
627 #ifdef CONFIG_USB_TI_CPPI41_DMA
628 .dma_init = cppi41_dma_controller_create,
629 .dma_exit = cppi41_dma_controller_destroy,
631 .enable = dsps_musb_enable,
632 .disable = dsps_musb_disable,
634 .set_mode = dsps_musb_set_mode,
635 .recover = dsps_musb_recover,
636 .clear_ep_rxintr = dsps_musb_clear_ep_rxintr,
639 static u64 musb_dmamask = DMA_BIT_MASK(32);
641 static int get_int_prop(struct device_node *dn, const char *s)
646 ret = of_property_read_u32(dn, s, &val);
652 static int get_musb_port_mode(struct device *dev)
654 enum usb_dr_mode mode;
656 mode = usb_get_dr_mode(dev);
658 case USB_DR_MODE_HOST:
659 return MUSB_PORT_MODE_HOST;
661 case USB_DR_MODE_PERIPHERAL:
662 return MUSB_PORT_MODE_GADGET;
664 case USB_DR_MODE_UNKNOWN:
665 case USB_DR_MODE_OTG:
667 return MUSB_PORT_MODE_DUAL_ROLE;
671 static int dsps_create_musb_pdev(struct dsps_glue *glue,
672 struct platform_device *parent)
674 struct musb_hdrc_platform_data pdata;
675 struct resource resources[2];
676 struct resource *res;
677 struct device *dev = &parent->dev;
678 struct musb_hdrc_config *config;
679 struct platform_device *musb;
680 struct device_node *dn = parent->dev.of_node;
683 memset(resources, 0, sizeof(resources));
684 res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc");
686 dev_err(dev, "failed to get memory.\n");
691 res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc");
693 dev_err(dev, "failed to get irq.\n");
698 /* allocate the child platform device */
699 musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
701 dev_err(dev, "failed to allocate musb device\n");
705 musb->dev.parent = dev;
706 musb->dev.dma_mask = &musb_dmamask;
707 musb->dev.coherent_dma_mask = musb_dmamask;
711 ret = platform_device_add_resources(musb, resources,
712 ARRAY_SIZE(resources));
714 dev_err(dev, "failed to add resources\n");
718 config = devm_kzalloc(&parent->dev, sizeof(*config), GFP_KERNEL);
723 pdata.config = config;
724 pdata.platform_ops = &dsps_ops;
726 config->num_eps = get_int_prop(dn, "mentor,num-eps");
727 config->ram_bits = get_int_prop(dn, "mentor,ram-bits");
728 config->host_port_deassert_reset_at_resume = 1;
729 pdata.mode = get_musb_port_mode(dev);
730 /* DT keeps this entry in mA, musb expects it as per USB spec */
731 pdata.power = get_int_prop(dn, "mentor,power") / 2;
733 ret = of_property_read_u32(dn, "mentor,multipoint", &val);
735 config->multipoint = true;
737 config->maximum_speed = usb_get_maximum_speed(&parent->dev);
738 switch (config->maximum_speed) {
742 case USB_SPEED_SUPER:
743 dev_warn(dev, "ignore incorrect maximum_speed "
744 "(super-speed) setting in dts");
747 config->maximum_speed = USB_SPEED_HIGH;
750 ret = platform_device_add_data(musb, &pdata, sizeof(pdata));
752 dev_err(dev, "failed to add platform_data\n");
756 ret = platform_device_add(musb);
758 dev_err(dev, "failed to register musb device\n");
764 platform_device_put(musb);
768 static int dsps_probe(struct platform_device *pdev)
770 const struct of_device_id *match;
771 const struct dsps_musb_wrapper *wrp;
772 struct dsps_glue *glue;
775 if (!strcmp(pdev->name, "musb-hdrc"))
778 match = of_match_node(musb_dsps_of_match, pdev->dev.of_node);
780 dev_err(&pdev->dev, "fail to get matching of_match struct\n");
785 if (of_device_is_compatible(pdev->dev.of_node, "ti,musb-dm816"))
786 dsps_ops.read_fifo = dsps_read_fifo32;
789 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
793 glue->dev = &pdev->dev;
796 platform_set_drvdata(pdev, glue);
797 pm_runtime_enable(&pdev->dev);
798 ret = dsps_create_musb_pdev(glue, pdev);
805 pm_runtime_disable(&pdev->dev);
809 static int dsps_remove(struct platform_device *pdev)
811 struct dsps_glue *glue = platform_get_drvdata(pdev);
813 platform_device_unregister(glue->musb);
815 pm_runtime_disable(&pdev->dev);
820 static const struct dsps_musb_wrapper am33xx_driver_data = {
825 .epintr_clear = 0x40,
826 .epintr_status = 0x30,
827 .coreintr_set = 0x3c,
828 .coreintr_clear = 0x44,
829 .coreintr_status = 0x34,
840 .usb_bitmap = (0x1ff << 0),
844 .txep_bitmap = (0xffff << 0),
847 .rxep_bitmap = (0xfffe << 16),
848 .poll_timeout = 2000, /* ms */
851 static const struct of_device_id musb_dsps_of_match[] = {
852 { .compatible = "ti,musb-am33xx",
853 .data = &am33xx_driver_data, },
854 { .compatible = "ti,musb-dm816",
855 .data = &am33xx_driver_data, },
858 MODULE_DEVICE_TABLE(of, musb_dsps_of_match);
860 #ifdef CONFIG_PM_SLEEP
861 static int dsps_suspend(struct device *dev)
863 struct dsps_glue *glue = dev_get_drvdata(dev);
864 const struct dsps_musb_wrapper *wrp = glue->wrp;
865 struct musb *musb = platform_get_drvdata(glue->musb);
868 del_timer_sync(&glue->timer);
871 /* This can happen if the musb device is in -EPROBE_DEFER */
874 mbase = musb->ctrl_base;
875 glue->context.control = musb_readl(mbase, wrp->control);
876 glue->context.epintr = musb_readl(mbase, wrp->epintr_set);
877 glue->context.coreintr = musb_readl(mbase, wrp->coreintr_set);
878 glue->context.phy_utmi = musb_readl(mbase, wrp->phy_utmi);
879 glue->context.mode = musb_readl(mbase, wrp->mode);
880 glue->context.tx_mode = musb_readl(mbase, wrp->tx_mode);
881 glue->context.rx_mode = musb_readl(mbase, wrp->rx_mode);
886 static int dsps_resume(struct device *dev)
888 struct dsps_glue *glue = dev_get_drvdata(dev);
889 const struct dsps_musb_wrapper *wrp = glue->wrp;
890 struct musb *musb = platform_get_drvdata(glue->musb);
896 mbase = musb->ctrl_base;
897 musb_writel(mbase, wrp->control, glue->context.control);
898 musb_writel(mbase, wrp->epintr_set, glue->context.epintr);
899 musb_writel(mbase, wrp->coreintr_set, glue->context.coreintr);
900 musb_writel(mbase, wrp->phy_utmi, glue->context.phy_utmi);
901 musb_writel(mbase, wrp->mode, glue->context.mode);
902 musb_writel(mbase, wrp->tx_mode, glue->context.tx_mode);
903 musb_writel(mbase, wrp->rx_mode, glue->context.rx_mode);
904 if (musb->xceiv->otg->state == OTG_STATE_B_IDLE &&
905 musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
906 mod_timer(&glue->timer, jiffies +
907 msecs_to_jiffies(wrp->poll_timeout));
913 static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume);
915 static struct platform_driver dsps_usbss_driver = {
917 .remove = dsps_remove,
921 .of_match_table = musb_dsps_of_match,
925 MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer");
926 MODULE_AUTHOR("Ravi B <ravibabu@ti.com>");
927 MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>");
928 MODULE_LICENSE("GPL v2");
930 module_platform_driver(dsps_usbss_driver);