Lines Matching refs:hsotg
18 #include <linux/platform_data/s3c-hsotg.h>
52 static int dwc2_get_dr_mode(struct dwc2_hsotg *hsotg)
56 hsotg->dr_mode = usb_get_dr_mode(hsotg->dev);
57 if (hsotg->dr_mode == USB_DR_MODE_UNKNOWN)
58 hsotg->dr_mode = USB_DR_MODE_OTG;
60 mode = hsotg->dr_mode;
62 if (dwc2_hw_is_device(hsotg)) {
64 dev_err(hsotg->dev,
69 } else if (dwc2_hw_is_host(hsotg)) {
71 dev_err(hsotg->dev,
83 if (mode != hsotg->dr_mode) {
84 dev_warn(hsotg->dev,
88 hsotg->dr_mode = mode;
94 static int __dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg)
96 struct platform_device *pdev = to_platform_device(hsotg->dev);
99 ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
100 hsotg->supplies);
104 if (hsotg->utmi_clk) {
105 ret = clk_prepare_enable(hsotg->utmi_clk);
110 if (hsotg->clk) {
111 ret = clk_prepare_enable(hsotg->clk);
116 if (hsotg->uphy) {
117 ret = usb_phy_init(hsotg->uphy);
118 } else if (hsotg->plat && hsotg->plat->phy_init) {
119 ret = hsotg->plat->phy_init(pdev, hsotg->plat->phy_type);
121 ret = phy_init(hsotg->phy);
123 ret = phy_power_on(hsotg->phy);
125 phy_exit(hsotg->phy);
135 if (hsotg->clk)
136 clk_disable_unprepare(hsotg->clk);
139 if (hsotg->utmi_clk)
140 clk_disable_unprepare(hsotg->utmi_clk);
143 regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
150 * @hsotg: The driver state
155 int dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg)
157 int ret = __dwc2_lowlevel_hw_enable(hsotg);
160 hsotg->ll_hw_enabled = true;
164 static int __dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg)
166 struct platform_device *pdev = to_platform_device(hsotg->dev);
169 if (hsotg->uphy) {
170 usb_phy_shutdown(hsotg->uphy);
171 } else if (hsotg->plat && hsotg->plat->phy_exit) {
172 ret = hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type);
174 ret = phy_power_off(hsotg->phy);
176 ret = phy_exit(hsotg->phy);
181 if (hsotg->clk)
182 clk_disable_unprepare(hsotg->clk);
184 if (hsotg->utmi_clk)
185 clk_disable_unprepare(hsotg->utmi_clk);
187 return regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
192 * @hsotg: The driver state
197 int dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg)
199 int ret = __dwc2_lowlevel_hw_disable(hsotg);
202 hsotg->ll_hw_enabled = false;
211 static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg)
215 hsotg->reset = devm_reset_control_get_optional(hsotg->dev, "dwc2");
216 if (IS_ERR(hsotg->reset))
217 return dev_err_probe(hsotg->dev, PTR_ERR(hsotg->reset),
220 reset_control_deassert(hsotg->reset);
221 ret = devm_add_action_or_reset(hsotg->dev, dwc2_reset_control_assert,
222 hsotg->reset);
226 hsotg->reset_ecc = devm_reset_control_get_optional(hsotg->dev, "dwc2-ecc");
227 if (IS_ERR(hsotg->reset_ecc))
228 return dev_err_probe(hsotg->dev, PTR_ERR(hsotg->reset_ecc),
231 reset_control_deassert(hsotg->reset_ecc);
232 ret = devm_add_action_or_reset(hsotg->dev, dwc2_reset_control_assert,
233 hsotg->reset_ecc);
241 hsotg->phy = devm_phy_get(hsotg->dev, "usb2-phy");
242 if (IS_ERR(hsotg->phy)) {
243 ret = PTR_ERR(hsotg->phy);
247 hsotg->phy = NULL;
250 return dev_err_probe(hsotg->dev, ret, "error getting phy\n");
254 if (!hsotg->phy) {
255 hsotg->uphy = devm_usb_get_phy(hsotg->dev, USB_PHY_TYPE_USB2);
256 if (IS_ERR(hsotg->uphy)) {
257 ret = PTR_ERR(hsotg->uphy);
261 hsotg->uphy = NULL;
264 return dev_err_probe(hsotg->dev, ret, "error getting usb phy\n");
269 hsotg->plat = dev_get_platdata(hsotg->dev);
272 hsotg->clk = devm_clk_get_optional(hsotg->dev, "otg");
273 if (IS_ERR(hsotg->clk))
274 return dev_err_probe(hsotg->dev, PTR_ERR(hsotg->clk), "cannot get otg clock\n");
276 hsotg->utmi_clk = devm_clk_get_optional(hsotg->dev, "utmi");
277 if (IS_ERR(hsotg->utmi_clk))
278 return dev_err_probe(hsotg->dev, PTR_ERR(hsotg->utmi_clk),
282 for (i = 0; i < ARRAY_SIZE(hsotg->supplies); i++)
283 hsotg->supplies[i].supply = dwc2_hsotg_supply_names[i];
285 ret = devm_regulator_bulk_get(hsotg->dev, ARRAY_SIZE(hsotg->supplies),
286 hsotg->supplies);
288 return dev_err_probe(hsotg->dev, ret, "failed to request supplies\n");
306 struct dwc2_hsotg *hsotg = platform_get_drvdata(dev);
310 gr = &hsotg->gr_backup;
313 if (hsotg->hibernated) {
315 ret = dwc2_exit_hibernation(hsotg, 0, 0, 1);
317 ret = dwc2_exit_hibernation(hsotg, 0, 0, 0);
320 dev_err(hsotg->dev,
325 if (hsotg->in_ppd) {
326 ret = dwc2_exit_partial_power_down(hsotg, 0, true);
328 dev_err(hsotg->dev,
333 if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_NONE &&
334 hsotg->bus_suspended) {
335 if (dwc2_is_device_mode(hsotg))
336 dwc2_gadget_exit_clock_gating(hsotg, 0);
338 dwc2_host_exit_clock_gating(hsotg, 0);
341 dwc2_debugfs_exit(hsotg);
342 if (hsotg->hcd_enabled)
343 dwc2_hcd_remove(hsotg);
344 if (hsotg->gadget_enabled)
345 dwc2_hsotg_remove(hsotg);
347 dwc2_drd_exit(hsotg);
349 if (hsotg->params.activate_stm_id_vb_detection)
350 regulator_disable(hsotg->usb33d);
352 if (hsotg->ll_hw_enabled)
353 dwc2_lowlevel_hw_disable(hsotg);
370 struct dwc2_hsotg *hsotg = platform_get_drvdata(dev);
372 dwc2_disable_global_interrupts(hsotg);
373 synchronize_irq(hsotg->irq);
379 * @hsotg: Programming view of the DWC_otg controller.
381 static bool dwc2_check_core_endianness(struct dwc2_hsotg *hsotg)
385 snpsid = ioread32(hsotg->regs + GSNPSID);
396 * @hsotg: Programming view of the DWC_otg controller
399 int dwc2_check_core_version(struct dwc2_hsotg *hsotg)
401 struct dwc2_hw_params *hw = &hsotg->hw_params;
409 hw->snpsid = dwc2_readl(hsotg, GSNPSID);
413 dev_err(hsotg->dev, "Bad value for GSNPSID: 0x%08x\n",
418 dev_dbg(hsotg->dev, "Core Release: %1x.%1x%1x%1x (snpsid=%x)\n",
438 struct dwc2_hsotg *hsotg;
442 hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
443 if (!hsotg)
446 hsotg->dev = &dev->dev;
459 hsotg->regs = devm_platform_get_and_ioremap_resource(dev, 0, &res);
460 if (IS_ERR(hsotg->regs))
461 return PTR_ERR(hsotg->regs);
464 (unsigned long)res->start, hsotg->regs);
466 retval = dwc2_lowlevel_hw_init(hsotg);
470 spin_lock_init(&hsotg->lock);
472 hsotg->irq = platform_get_irq(dev, 0);
473 if (hsotg->irq < 0)
474 return hsotg->irq;
476 dev_dbg(hsotg->dev, "registering common handler for irq%d\n",
477 hsotg->irq);
478 retval = devm_request_irq(hsotg->dev, hsotg->irq,
480 dev_name(hsotg->dev), hsotg);
484 hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus");
485 if (IS_ERR(hsotg->vbus_supply)) {
486 retval = PTR_ERR(hsotg->vbus_supply);
487 hsotg->vbus_supply = NULL;
492 retval = dwc2_lowlevel_hw_enable(hsotg);
496 hsotg->needs_byte_swap = dwc2_check_core_endianness(hsotg);
498 retval = dwc2_get_dr_mode(hsotg);
502 hsotg->need_phy_for_wake =
510 retval = dwc2_check_core_version(hsotg);
518 retval = dwc2_core_reset(hsotg, false);
523 retval = dwc2_get_hwparams(hsotg);
532 dwc2_force_dr_mode(hsotg);
534 retval = dwc2_init_params(hsotg);
538 if (hsotg->params.activate_stm_id_vb_detection) {
541 hsotg->usb33d = devm_regulator_get(hsotg->dev, "usb33d");
542 if (IS_ERR(hsotg->usb33d)) {
543 retval = PTR_ERR(hsotg->usb33d);
544 dev_err_probe(hsotg->dev, retval, "failed to request usb33d supply\n");
547 retval = regulator_enable(hsotg->usb33d);
549 dev_err_probe(hsotg->dev, retval, "failed to enable usb33d supply\n");
553 ggpio = dwc2_readl(hsotg, GGPIO);
556 dwc2_writel(hsotg, ggpio, GGPIO);
562 retval = dwc2_drd_init(hsotg);
564 dev_err_probe(hsotg->dev, retval, "failed to initialize dual-role\n");
568 if (hsotg->dr_mode != USB_DR_MODE_HOST) {
569 retval = dwc2_gadget_init(hsotg);
572 hsotg->gadget_enabled = 1;
580 if (hsotg->need_phy_for_wake)
583 hsotg->reset_phy_on_wake =
586 if (hsotg->reset_phy_on_wake && !hsotg->phy) {
587 dev_warn(hsotg->dev,
589 hsotg->reset_phy_on_wake = false;
592 if (hsotg->dr_mode != USB_DR_MODE_PERIPHERAL) {
593 retval = dwc2_hcd_init(hsotg);
595 if (hsotg->gadget_enabled)
596 dwc2_hsotg_remove(hsotg);
599 hsotg->hcd_enabled = 1;
602 platform_set_drvdata(dev, hsotg);
603 hsotg->hibernated = 0;
605 dwc2_debugfs_init(hsotg);
608 if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
609 dwc2_lowlevel_hw_disable(hsotg);
614 if (hsotg->gadget_enabled) {
615 retval = usb_add_gadget_udc(hsotg->dev, &hsotg->gadget);
617 hsotg->gadget.udc = NULL;
618 dwc2_hsotg_remove(hsotg);
628 dwc2_debugfs_exit(hsotg);
629 if (hsotg->hcd_enabled)
630 dwc2_hcd_remove(hsotg);
633 dwc2_drd_exit(hsotg);
636 if (hsotg->params.activate_stm_id_vb_detection)
637 regulator_disable(hsotg->usb33d);
639 if (hsotg->ll_hw_enabled)
640 dwc2_lowlevel_hw_disable(hsotg);