2 #include "usbdev_grf_regs.h"
3 #include "dwc_otg_regs.h"
4 static struct dwc_otg_control_usb *control_usb;
6 #ifdef CONFIG_USB20_OTG
7 static void usb20otg_hw_init(void)
9 /* Turn off differential receiver in suspend mode */
10 writel(UOC_HIWORD_UPDATE(0, 1, 2),
11 RK_GRF_VIRT + RK312X_GRF_USBPHY0_CON6);
12 /* Set disconnect detection trigger point to 600mv */
13 writel(UOC_HIWORD_UPDATE(0, 0xf, 11),
14 RK_GRF_VIRT + RK312X_GRF_USBPHY0_CON7);
15 /* other haredware init,include:
16 * DRV_VBUS GPIO init */
17 if (gpio_is_valid(control_usb->otg_gpios->gpio)) {
18 if (gpio_get_value(control_usb->otg_gpios->gpio))
19 gpio_set_value(control_usb->otg_gpios->gpio, 0);
23 static void usb20otg_phy_suspend(void *pdata, int suspend)
25 struct dwc_otg_platform_data *usbpdata = pdata;
27 /* enable soft control */
28 writel(UOC_HIWORD_UPDATE(0x55, 0x7f, 0),
29 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
30 usbpdata->phy_status = 1;
33 writel(UOC_HIWORD_UPDATE(0x0, 0x1, 0),
34 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
35 usbpdata->phy_status = 0;
39 static void usb20otg_soft_reset(void *pdata, enum rkusb_rst_flag rst_type)
41 struct dwc_otg_platform_data *usbpdata = pdata;
42 struct reset_control *rst_otg_h, *rst_otg_p, *rst_otg_c;
44 rst_otg_h = devm_reset_control_get(usbpdata->dev, "otg_ahb");
45 rst_otg_p = devm_reset_control_get(usbpdata->dev, "otg_phy");
46 rst_otg_c = devm_reset_control_get(usbpdata->dev, "otg_controller");
47 if (IS_ERR(rst_otg_h) || IS_ERR(rst_otg_p) || IS_ERR(rst_otg_c)) {
48 dev_err(usbpdata->dev, "Fail to get reset control from dts\n");
55 writel(UOC_HIWORD_UPDATE(0x1, 0x3, 0),
56 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
57 reset_control_assert(rst_otg_p);
59 writel(UOC_HIWORD_UPDATE(0x2, 0x3, 0),
60 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
62 reset_control_deassert(rst_otg_p);
65 /* Controller reset */
66 reset_control_assert(rst_otg_c);
67 reset_control_assert(rst_otg_h);
71 reset_control_deassert(rst_otg_c);
72 reset_control_deassert(rst_otg_h);
80 static void usb20otg_clock_init(void *pdata)
82 struct dwc_otg_platform_data *usbpdata = pdata;
83 struct clk *ahbclk, *phyclk;
85 ahbclk = devm_clk_get(usbpdata->dev, "hclk_usb0");
87 dev_err(usbpdata->dev, "Failed to get hclk_usb0\n");
91 phyclk = devm_clk_get(usbpdata->dev, "clk_usbphy0");
93 dev_err(usbpdata->dev, "Failed to get clk_usbphy0\n");
97 usbpdata->phyclk = phyclk;
98 usbpdata->ahbclk = ahbclk;
101 static void usb20otg_clock_enable(void *pdata, int enable)
103 struct dwc_otg_platform_data *usbpdata = pdata;
106 clk_prepare_enable(usbpdata->ahbclk);
107 clk_prepare_enable(usbpdata->phyclk);
109 clk_disable_unprepare(usbpdata->ahbclk);
111 clk_disable_unprepare(usbpdata->phyclk);
116 static int usb20otg_get_status(int id)
119 u32 soc_status0 = readl(RK_GRF_VIRT + RK312X_GRF_SOC_STATUS0);
121 case USB_STATUS_BVABLID:
123 ret = soc_status0 & (0x1 << 5);
125 case USB_STATUS_DPDM:
127 ret = soc_status0 & (0x3 << 6);
131 ret = soc_status0 & (0x1 << 8);
133 case USB_STATUS_UARTMODE:
134 ret = readl(RK_GRF_VIRT + RK312X_GRF_UOC1_CON4) & (1 << 12);
137 ret = control_usb->chip_id;
139 case USB_REMOTE_WAKEUP:
140 ret = control_usb->remote_wakeup;
143 ret = control_usb->usb_irq_wakeup;
151 #ifdef CONFIG_RK_USB_UART
153 * dwc_otg_uart_enabled - check if a usb-uart bypass func is enabled in DT
155 * Returns true if the status property of node "usb_uart" is set to "okay"
156 * or "ok", if this property is absent it will use the default status "ok"
159 static bool dwc_otg_uart_enabled(void)
161 struct device_node *np;
163 np = of_find_node_by_name(NULL, "usb_uart");
164 if (np && of_device_is_available(np))
170 static void dwc_otg_uart_mode(void *pdata, int enter_usb_uart_mode)
172 if ((1 == enter_usb_uart_mode) && dwc_otg_uart_enabled()) {
173 /* bypass dm, enter uart mode */
174 writel(UOC_HIWORD_UPDATE(0x3, 0x3, 12), RK_GRF_VIRT +
175 RK312X_GRF_UOC1_CON4);
177 } else if (0 == enter_usb_uart_mode) {
179 writel(UOC_HIWORD_UPDATE(0x0, 0x3, 12), RK_GRF_VIRT +
180 RK312X_GRF_UOC1_CON4);
184 static void dwc_otg_uart_mode(void *pdata, int enter_usb_uart_mode)
189 static void usb20otg_power_enable(int enable)
192 /* disable otg_drv power */
193 if (gpio_is_valid(control_usb->otg_gpios->gpio))
194 gpio_set_value(control_usb->otg_gpios->gpio, 0);
195 } else if (1 == enable) {
196 /* enable otg_drv power */
197 if (gpio_is_valid(control_usb->otg_gpios->gpio))
198 gpio_set_value(control_usb->otg_gpios->gpio, 1);
202 struct dwc_otg_platform_data usb20otg_pdata_rk3126 = {
207 .hw_init = usb20otg_hw_init,
208 .phy_suspend = usb20otg_phy_suspend,
209 .soft_reset = usb20otg_soft_reset,
210 .clock_init = usb20otg_clock_init,
211 .clock_enable = usb20otg_clock_enable,
212 .get_status = usb20otg_get_status,
213 .power_enable = usb20otg_power_enable,
214 .dwc_otg_uart_mode = dwc_otg_uart_mode,
215 .bc_detect_cb = rk_battery_charger_detect_cb,
219 #if defined(CONFIG_USB20_HOST) || defined(CONFIG_USB_EHCI_RK)
220 static void usb20host_hw_init(void)
222 /* Turn off differential receiver in suspend mode */
223 writel(UOC_HIWORD_UPDATE(0, 1, 2),
224 RK_GRF_VIRT + RK312X_GRF_USBPHY1_CON6);
225 /* Set disconnect detection trigger point to 600mv */
226 writel(UOC_HIWORD_UPDATE(1, 0xf, 11),
227 RK_GRF_VIRT + RK312X_GRF_USBPHY1_CON7);
228 /* other haredware init,include:
229 * DRV_VBUS GPIO init */
230 if (gpio_is_valid(control_usb->host_gpios->gpio)) {
231 if (!gpio_get_value(control_usb->host_gpios->gpio))
232 gpio_set_value(control_usb->host_gpios->gpio, 1);
236 static void usb20host_phy_suspend(void *pdata, int suspend)
238 struct dwc_otg_platform_data *usbpdata = pdata;
241 /* enable soft control */
242 writel(UOC_HIWORD_UPDATE(0x1d5, 0x1ff, 0),
243 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
244 usbpdata->phy_status = 1;
247 writel(UOC_HIWORD_UPDATE(0x0, 0x1, 0),
248 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
249 usbpdata->phy_status = 0;
253 static void usb20host_soft_reset(void *pdata, enum rkusb_rst_flag rst_type)
255 struct dwc_otg_platform_data *usbpdata = pdata;
256 struct reset_control *rst_host_h, *rst_host_p, *rst_host_c;
258 rst_host_h = devm_reset_control_get(usbpdata->dev, "host_ahb");
259 rst_host_p = devm_reset_control_get(usbpdata->dev, "host_phy");
260 rst_host_c = devm_reset_control_get(usbpdata->dev, "host_controller");
261 if (IS_ERR(rst_host_h) || IS_ERR(rst_host_p) || IS_ERR(rst_host_c)) {
262 dev_err(usbpdata->dev, "Fail to get reset control from dts\n");
269 writel(UOC_HIWORD_UPDATE(0x1, 0x3, 0),
270 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
271 reset_control_assert(rst_host_p);
273 writel(UOC_HIWORD_UPDATE(0x2, 0x3, 0),
274 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
277 reset_control_deassert(rst_host_p);
279 /* Controller reset */
280 reset_control_assert(rst_host_c);
281 reset_control_assert(rst_host_h);
285 reset_control_deassert(rst_host_c);
286 reset_control_deassert(rst_host_h);
294 static void usb20host_clock_init(void *pdata)
296 struct dwc_otg_platform_data *usbpdata = pdata;
297 struct clk *ahbclk, *phyclk;
299 ahbclk = devm_clk_get(usbpdata->dev, "hclk_usb1");
300 if (IS_ERR(ahbclk)) {
301 dev_err(usbpdata->dev, "Failed to get hclk_usb1\n");
305 phyclk = devm_clk_get(usbpdata->dev, "clk_usbphy1");
306 if (IS_ERR(phyclk)) {
307 dev_err(usbpdata->dev, "Failed to get clk_usbphy1\n");
311 usbpdata->phyclk = phyclk;
312 usbpdata->ahbclk = ahbclk;
315 static void usb20host_clock_enable(void *pdata, int enable)
317 struct dwc_otg_platform_data *usbpdata = pdata;
320 clk_prepare_enable(usbpdata->ahbclk);
321 clk_prepare_enable(usbpdata->phyclk);
323 clk_disable_unprepare(usbpdata->ahbclk);
324 clk_disable_unprepare(usbpdata->phyclk);
328 static int usb20host_get_status(int id)
331 u32 soc_status0 = readl(RK_GRF_VIRT + RK312X_GRF_SOC_STATUS0);
334 case USB_STATUS_BVABLID:
336 ret = soc_status0 & (0x1 << 10);
338 case USB_STATUS_DPDM:
340 ret = soc_status0 & (0x3 << 11);
347 ret = control_usb->chip_id;
349 case USB_REMOTE_WAKEUP:
350 ret = control_usb->remote_wakeup;
353 ret = control_usb->usb_irq_wakeup;
361 static void usb20host_power_enable(int enable)
364 /* disable host_drv power */
365 /* do not disable power in default */
366 } else if (1 == enable) {
367 /* enable host_drv power */
368 if (gpio_is_valid(control_usb->host_gpios->gpio))
369 gpio_set_value(control_usb->host_gpios->gpio, 1);
373 struct dwc_otg_platform_data usb20host_pdata_rk3126 = {
378 .hw_init = usb20host_hw_init,
379 .phy_suspend = usb20host_phy_suspend,
380 .soft_reset = usb20host_soft_reset,
381 .clock_init = usb20host_clock_init,
382 .clock_enable = usb20host_clock_enable,
383 .get_status = usb20host_get_status,
384 .power_enable = usb20host_power_enable,
388 #ifdef CONFIG_USB_EHCI_RK
389 static void usb20ehci_phy_suspend(void *pdata, int suspend)
391 struct rkehci_platform_data *usbpdata = pdata;
394 /* enable soft control */
395 writel(UOC_HIWORD_UPDATE(0x1d5, 0x1ff, 0),
396 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
397 usbpdata->phy_status = 1;
400 writel(UOC_HIWORD_UPDATE(0x0, 0x1, 0),
401 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
402 usbpdata->phy_status = 0;
406 static void usb20ehci_soft_reset(void *pdata, enum rkusb_rst_flag rst_type)
408 struct rkehci_platform_data *usbpdata = pdata;
409 struct reset_control *rst_host_h, *rst_host_p, *rst_host_c;
411 rst_host_h = devm_reset_control_get(usbpdata->dev, "host_ahb");
412 rst_host_p = devm_reset_control_get(usbpdata->dev, "host_phy");
413 rst_host_c = devm_reset_control_get(usbpdata->dev, "host_controller");
414 if (IS_ERR(rst_host_h) || IS_ERR(rst_host_p) || IS_ERR(rst_host_c)) {
415 dev_err(usbpdata->dev, "Fail to get reset control from dts\n");
422 writel(UOC_HIWORD_UPDATE(0x1, 0x3, 0),
423 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
424 reset_control_assert(rst_host_p);
426 writel(UOC_HIWORD_UPDATE(0x2, 0x3, 0),
427 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
430 reset_control_deassert(rst_host_p);
432 /* Controller reset */
433 reset_control_assert(rst_host_c);
434 reset_control_assert(rst_host_h);
438 reset_control_deassert(rst_host_c);
439 reset_control_deassert(rst_host_h);
447 static void usb20ehci_clock_init(void *pdata)
449 struct rkehci_platform_data *usbpdata = pdata;
450 struct clk *ahbclk, *phyclk;
452 ahbclk = devm_clk_get(usbpdata->dev, "hclk_host0");
453 if (IS_ERR(ahbclk)) {
454 dev_err(usbpdata->dev, "Failed to get hclk_usb1\n");
458 phyclk = devm_clk_get(usbpdata->dev, "clk_usbphy1");
459 if (IS_ERR(phyclk)) {
460 dev_err(usbpdata->dev, "Failed to get clk_usbphy1\n");
464 usbpdata->phyclk = phyclk;
465 usbpdata->ahbclk = ahbclk;
468 static void usb20ehci_clock_enable(void *pdata, int enable)
470 struct rkehci_platform_data *usbpdata = pdata;
473 clk_prepare_enable(usbpdata->ahbclk);
474 clk_prepare_enable(usbpdata->phyclk);
476 clk_disable_unprepare(usbpdata->ahbclk);
477 clk_disable_unprepare(usbpdata->phyclk);
481 struct rkehci_platform_data usb20ehci_pdata_rk3126 = {
485 .hw_init = usb20host_hw_init,
486 .phy_suspend = usb20ehci_phy_suspend,
487 .soft_reset = usb20ehci_soft_reset,
488 .clock_init = usb20ehci_clock_init,
489 .clock_enable = usb20ehci_clock_enable,
490 .get_status = usb20host_get_status,
494 struct dwc_otg_platform_data usb20ohci_pdata_rk3126;
497 static const struct of_device_id rk_usb_control_id_table[] = {
499 .compatible = "rockchip,rk3126-usb-control",
504 /*********************************************************************
505 rk3126 usb detections
506 *********************************************************************/
508 #define WAKE_LOCK_TIMEOUT (HZ * 10)
509 static inline void do_wakeup(struct work_struct *work)
511 /* wake up the system */
512 rk_send_wakeup_key();
515 static void usb_battery_charger_detect_work(struct work_struct *work)
517 rk_battery_charger_detect_cb(usb_battery_charger_detect(1));
520 /********** handler for bvalid irq **********/
521 static irqreturn_t bvalid_irq_handler(int irq, void *dev_id)
524 writel(UOC_HIWORD_UPDATE(0x1, 0x1, 15),
525 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
526 #ifdef CONFIG_RK_USB_UART
527 /* usb otg dp/dm switch to usb phy */
528 dwc_otg_uart_mode(NULL, PHY_USB_MODE);
531 if (control_usb->usb_irq_wakeup) {
532 wake_lock_timeout(&control_usb->usb_wakelock,
534 schedule_delayed_work(&control_usb->usb_det_wakeup_work,
538 schedule_delayed_work(&control_usb->usb_charger_det_work, HZ / 10);
543 /************* register usb detection irqs **************/
544 static int otg_irq_detect_init(struct platform_device *pdev)
549 if (control_usb->usb_irq_wakeup) {
550 wake_lock_init(&control_usb->usb_wakelock, WAKE_LOCK_SUSPEND,
552 INIT_DELAYED_WORK(&control_usb->usb_det_wakeup_work, do_wakeup);
555 /*register otg_bvalid irq */
556 irq = platform_get_irq_byname(pdev, "otg_bvalid");
557 if ((irq > 0) && control_usb->usb_irq_wakeup) {
558 ret = request_irq(irq, bvalid_irq_handler,
559 0, "otg_bvalid", NULL);
561 dev_err(&pdev->dev, "request_irq %d failed!\n", irq);
563 /* enable bvalid irq */
564 writel(UOC_HIWORD_UPDATE(0x1, 0x1, 14),
565 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
571 /********** end of rk3126 usb detections **********/
572 static int rk_usb_control_probe(struct platform_device *pdev)
575 struct device_node *np = pdev->dev.of_node;
579 devm_kzalloc(&pdev->dev, sizeof(*control_usb), GFP_KERNEL);
581 dev_err(&pdev->dev, "unable to alloc memory for control usb\n");
586 control_usb->chip_id = RK3126_USB_CTLR;
587 control_usb->remote_wakeup = of_property_read_bool(np,
588 "rockchip,remote_wakeup");
589 control_usb->usb_irq_wakeup = of_property_read_bool(np,
590 "rockchip,usb_irq_wakeup");
592 INIT_DELAYED_WORK(&control_usb->usb_charger_det_work,
593 usb_battery_charger_detect_work);
595 control_usb->host_gpios =
596 devm_kzalloc(&pdev->dev, sizeof(struct gpio), GFP_KERNEL);
597 if (!control_usb->host_gpios) {
598 dev_err(&pdev->dev, "unable to alloc memory for host_gpios\n");
603 gpio = of_get_named_gpio(np, "host_drv_gpio", 0);
604 control_usb->host_gpios->gpio = gpio;
606 if (!gpio_is_valid(gpio)) {
607 dev_err(&pdev->dev, "invalid host gpio%d\n", gpio);
609 err = devm_gpio_request(&pdev->dev, gpio, "host_drv_gpio");
612 "failed to request GPIO%d for host_drv\n",
617 gpio_direction_output(control_usb->host_gpios->gpio, 1);
620 control_usb->otg_gpios =
621 devm_kzalloc(&pdev->dev, sizeof(struct gpio), GFP_KERNEL);
622 if (!control_usb->otg_gpios) {
623 dev_err(&pdev->dev, "unable to alloc memory for otg_gpios\n");
628 gpio = of_get_named_gpio(np, "otg_drv_gpio", 0);
629 control_usb->otg_gpios->gpio = gpio;
631 if (!gpio_is_valid(gpio)) {
632 dev_err(&pdev->dev, "invalid otg gpio%d\n", gpio);
634 err = devm_gpio_request(&pdev->dev, gpio, "otg_drv_gpio");
637 "failed to request GPIO%d for otg_drv\n", gpio);
641 gpio_direction_output(control_usb->otg_gpios->gpio, 0);
648 static int rk_usb_control_remove(struct platform_device *pdev)
653 static struct platform_driver rk_usb_control_driver = {
654 .probe = rk_usb_control_probe,
655 .remove = rk_usb_control_remove,
657 .name = "rk3126-usb-control",
658 .owner = THIS_MODULE,
659 .of_match_table = of_match_ptr(rk_usb_control_id_table),
665 static const struct of_device_id dwc_otg_control_usb_id_table[] = {
667 .compatible = "rockchip,rk3126-dwc-control-usb",
673 static int dwc_otg_control_usb_probe(struct platform_device *pdev)
675 struct clk *hclk_usb_peri;
679 dev_err(&pdev->dev, "unable to alloc memory for control usb\n");
684 hclk_usb_peri = devm_clk_get(&pdev->dev, "hclk_usb_peri");
685 if (IS_ERR(hclk_usb_peri)) {
686 dev_err(&pdev->dev, "Failed to get hclk_usb_peri\n");
691 control_usb->hclk_usb_peri = hclk_usb_peri;
692 clk_prepare_enable(hclk_usb_peri);
694 #ifdef CONFIG_USB20_OTG
695 if (usb20otg_get_status(USB_STATUS_BVABLID))
696 schedule_delayed_work(&control_usb->usb_charger_det_work,
700 ret = otg_irq_detect_init(pdev);
707 clk_disable_unprepare(hclk_usb_peri);
712 static int dwc_otg_control_usb_remove(struct platform_device *pdev)
714 clk_disable_unprepare(control_usb->hclk_usb_peri);
718 static struct platform_driver dwc_otg_control_usb_driver = {
719 .probe = dwc_otg_control_usb_probe,
720 .remove = dwc_otg_control_usb_remove,
722 .name = "rk3126-dwc-control-usb",
723 .owner = THIS_MODULE,
724 .of_match_table = of_match_ptr(dwc_otg_control_usb_id_table),
728 static int __init dwc_otg_control_usb_init(void)
732 retval |= platform_driver_register(&rk_usb_control_driver);
733 retval |= platform_driver_register(&dwc_otg_control_usb_driver);
737 subsys_initcall(dwc_otg_control_usb_init);
739 static void __exit dwc_otg_control_usb_exit(void)
741 platform_driver_unregister(&rk_usb_control_driver);
742 platform_driver_unregister(&dwc_otg_control_usb_driver);
745 module_exit(dwc_otg_control_usb_exit);
746 MODULE_ALIAS("platform: dwc_control_usb");
747 MODULE_AUTHOR("RockChip Inc.");
748 MODULE_DESCRIPTION("RockChip Control Module USB Driver");
749 MODULE_LICENSE("GPL v2");