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 /* other haredware init,include:
10 * DRV_VBUS GPIO init */
11 if (gpio_is_valid(control_usb->otg_gpios->gpio)) {
12 if (gpio_get_value(control_usb->otg_gpios->gpio))
13 gpio_set_value(control_usb->otg_gpios->gpio, 0);
17 static void usb20otg_phy_suspend(void *pdata, int suspend)
19 struct dwc_otg_platform_data *usbpdata = pdata;
21 /* enable soft control */
22 writel(UOC_HIWORD_UPDATE(0x55, 0x7f, 0),
23 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
24 usbpdata->phy_status = 1;
27 writel(UOC_HIWORD_UPDATE(0x0, 0x1, 0),
28 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
29 usbpdata->phy_status = 0;
33 static void usb20otg_soft_reset(void *pdata, enum rkusb_rst_flag rst_type)
35 struct dwc_otg_platform_data *usbpdata = pdata;
36 struct reset_control *rst_otg_h, *rst_otg_p, *rst_otg_c;
38 rst_otg_h = devm_reset_control_get(usbpdata->dev, "otg_ahb");
39 rst_otg_p = devm_reset_control_get(usbpdata->dev, "otg_phy");
40 rst_otg_c = devm_reset_control_get(usbpdata->dev, "otg_controller");
41 if (IS_ERR(rst_otg_h) || IS_ERR(rst_otg_p) || IS_ERR(rst_otg_c)) {
42 dev_err(usbpdata->dev, "Fail to get reset control from dts\n");
49 writel(UOC_HIWORD_UPDATE(0x1, 0x3, 0),
50 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
51 reset_control_assert(rst_otg_p);
53 writel(UOC_HIWORD_UPDATE(0x2, 0x3, 0),
54 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
56 reset_control_deassert(rst_otg_p);
59 /* Controller reset */
60 reset_control_assert(rst_otg_c);
61 reset_control_assert(rst_otg_h);
65 reset_control_deassert(rst_otg_c);
66 reset_control_deassert(rst_otg_h);
74 static void usb20otg_clock_init(void *pdata)
76 struct dwc_otg_platform_data *usbpdata = pdata;
77 struct clk *ahbclk, *phyclk;
79 ahbclk = devm_clk_get(usbpdata->dev, "hclk_usb0");
81 dev_err(usbpdata->dev, "Failed to get hclk_usb0\n");
85 phyclk = devm_clk_get(usbpdata->dev, "clk_usbphy0");
87 dev_err(usbpdata->dev, "Failed to get clk_usbphy0\n");
91 usbpdata->phyclk = phyclk;
92 usbpdata->ahbclk = ahbclk;
95 static void usb20otg_clock_enable(void *pdata, int enable)
97 struct dwc_otg_platform_data *usbpdata = pdata;
100 clk_prepare_enable(usbpdata->ahbclk);
101 clk_prepare_enable(usbpdata->phyclk);
103 clk_disable_unprepare(usbpdata->ahbclk);
105 clk_disable_unprepare(usbpdata->phyclk);
110 static int usb20otg_get_status(int id)
113 u32 soc_status0 = readl(RK_GRF_VIRT + RK312X_GRF_SOC_STATUS0);
116 case USB_STATUS_BVABLID:
118 ret = soc_status0 & (0x1 << 8);
120 case USB_STATUS_DPDM:
122 ret = soc_status0 & (0x3 << 9);
126 ret = soc_status0 & (0x1 << 11);
129 ret = control_usb->chip_id;
131 case USB_REMOTE_WAKEUP:
132 ret = control_usb->remote_wakeup;
135 ret = control_usb->usb_irq_wakeup;
143 static void dwc_otg_uart_mode(void *pdata, int enter_usb_uart_mode)
145 #ifdef CONFIG_RK_USB_UART
146 if (1 == enter_usb_uart_mode) {
147 /* bypass dm, enter uart mode */
148 writel(UOC_HIWORD_UPDATE(0x3, 0x3, 12),
149 RK_GRF_VIRT + RK312X_GRF_UOC1_CON4);
150 } else if (0 == enter_usb_uart_mode) {
152 writel(UOC_HIWORD_UPDATE(0x0, 0x3, 12),
153 RK_GRF_VIRT + RK312X_GRF_UOC1_CON4);
158 static void usb20otg_power_enable(int enable)
161 /* disable otg_drv power */
162 if (gpio_is_valid(control_usb->otg_gpios->gpio))
163 gpio_set_value(control_usb->otg_gpios->gpio, 0);
164 } else if (1 == enable) {
165 /* enable otg_drv power */
166 if (gpio_is_valid(control_usb->otg_gpios->gpio))
167 gpio_set_value(control_usb->otg_gpios->gpio, 1);
171 struct dwc_otg_platform_data usb20otg_pdata_rk3126 = {
176 .hw_init = usb20otg_hw_init,
177 .phy_suspend = usb20otg_phy_suspend,
178 .soft_reset = usb20otg_soft_reset,
179 .clock_init = usb20otg_clock_init,
180 .clock_enable = usb20otg_clock_enable,
181 .get_status = usb20otg_get_status,
182 .power_enable = usb20otg_power_enable,
183 .dwc_otg_uart_mode = dwc_otg_uart_mode,
184 .bc_detect_cb = usb20otg_battery_charger_detect_cb,
188 #ifdef CONFIG_USB20_HOST
189 static void usb20host_hw_init(void)
191 /* other haredware init,include:
192 * DRV_VBUS GPIO init */
193 if (gpio_is_valid(control_usb->host_gpios->gpio)) {
194 if (!gpio_get_value(control_usb->host_gpios->gpio))
195 gpio_set_value(control_usb->host_gpios->gpio, 1);
199 static void usb20host_phy_suspend(void *pdata, int suspend)
201 struct dwc_otg_platform_data *usbpdata = pdata;
204 /* enable soft control */
205 writel(UOC_HIWORD_UPDATE(0x1d5, 0x1ff, 0),
206 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
207 usbpdata->phy_status = 1;
210 writel(UOC_HIWORD_UPDATE(0x0, 0x1, 0),
211 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
212 usbpdata->phy_status = 0;
216 static void usb20host_soft_reset(void *pdata, enum rkusb_rst_flag rst_type)
218 struct dwc_otg_platform_data *usbpdata = pdata;
219 struct reset_control *rst_host_h, *rst_host_p, *rst_host_c;
221 rst_host_h = devm_reset_control_get(usbpdata->dev, "host_ahb");
222 rst_host_p = devm_reset_control_get(usbpdata->dev, "host_phy");
223 rst_host_c = devm_reset_control_get(usbpdata->dev, "host_controller");
224 if (IS_ERR(rst_host_h) || IS_ERR(rst_host_p) || IS_ERR(rst_host_c)) {
225 dev_err(usbpdata->dev, "Fail to get reset control from dts\n");
232 writel(UOC_HIWORD_UPDATE(0x1, 0x3, 0),
233 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
234 reset_control_assert(rst_host_p);
236 writel(UOC_HIWORD_UPDATE(0x2, 0x3, 0),
237 RK_GRF_VIRT + RK312X_GRF_UOC1_CON5);
240 reset_control_deassert(rst_host_p);
242 /* Controller reset */
243 reset_control_assert(rst_host_c);
244 reset_control_assert(rst_host_h);
248 reset_control_deassert(rst_host_c);
249 reset_control_deassert(rst_host_h);
257 static void usb20host_clock_init(void *pdata)
259 struct dwc_otg_platform_data *usbpdata = pdata;
260 struct clk *ahbclk, *phyclk;
262 ahbclk = devm_clk_get(usbpdata->dev, "hclk_usb1");
263 if (IS_ERR(ahbclk)) {
264 dev_err(usbpdata->dev, "Failed to get hclk_usb1\n");
268 phyclk = devm_clk_get(usbpdata->dev, "clk_usbphy1");
269 if (IS_ERR(phyclk)) {
270 dev_err(usbpdata->dev, "Failed to get clk_usbphy1\n");
274 usbpdata->phyclk = phyclk;
275 usbpdata->ahbclk = ahbclk;
278 static void usb20host_clock_enable(void *pdata, int enable)
280 struct dwc_otg_platform_data *usbpdata = pdata;
283 clk_prepare_enable(usbpdata->ahbclk);
284 clk_prepare_enable(usbpdata->phyclk);
286 clk_disable_unprepare(usbpdata->ahbclk);
287 clk_disable_unprepare(usbpdata->phyclk);
291 static int usb20host_get_status(int id)
294 u32 soc_status0 = readl(RK_GRF_VIRT + RK312X_GRF_SOC_STATUS0);
297 case USB_STATUS_BVABLID:
299 ret = soc_status0 & (0x1 << 10);
301 case USB_STATUS_DPDM:
303 ret = soc_status0 & (0x3 << 11);
310 ret = control_usb->chip_id;
312 case USB_REMOTE_WAKEUP:
313 ret = control_usb->remote_wakeup;
316 ret = control_usb->usb_irq_wakeup;
324 static void usb20host_power_enable(int enable)
327 /* disable host_drv power */
328 /* do not disable power in default */
329 } else if (1 == enable) {
330 /* enable host_drv power */
331 if (gpio_is_valid(control_usb->host_gpios->gpio))
332 gpio_set_value(control_usb->host_gpios->gpio, 1);
336 struct dwc_otg_platform_data usb20host_pdata_rk3126 = {
341 .hw_init = usb20host_hw_init,
342 .phy_suspend = usb20host_phy_suspend,
343 .soft_reset = usb20host_soft_reset,
344 .clock_init = usb20host_clock_init,
345 .clock_enable = usb20host_clock_enable,
346 .get_status = usb20host_get_status,
347 .power_enable = usb20host_power_enable,
352 static const struct of_device_id rk_usb_control_id_table[] = {
354 .compatible = "rockchip,rk3126-usb-control",
359 /*********************************************************************
360 rk3126 usb detections
361 *********************************************************************/
363 #define WAKE_LOCK_TIMEOUT (HZ * 10)
364 static inline void do_wakeup(struct work_struct *work)
366 /* wake up the system */
367 rk_send_wakeup_key();
370 static void usb_battery_charger_detect_work(struct work_struct *work)
372 rk_usb_charger_status = usb_battery_charger_detect(0);
375 /********** handler for bvalid irq **********/
376 static irqreturn_t bvalid_irq_handler(int irq, void *dev_id)
379 writel(UOC_HIWORD_UPDATE(0x1, 0x1, 15),
380 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
381 #ifdef CONFIG_RK_USB_UART
382 /* usb otg dp/dm switch to usb phy */
383 dwc_otg_uart_mode(NULL, PHY_USB_MODE);
386 if (control_usb->usb_irq_wakeup) {
387 wake_lock_timeout(&control_usb->usb_wakelock,
389 schedule_delayed_work(&control_usb->usb_det_wakeup_work,
393 rk_usb_charger_status = USB_BC_TYPE_SDP;
394 schedule_delayed_work(&control_usb->usb_charger_det_work, HZ / 10);
399 /************* register usb detection irqs **************/
400 static int otg_irq_detect_init(struct platform_device *pdev)
405 if (control_usb->usb_irq_wakeup) {
406 wake_lock_init(&control_usb->usb_wakelock, WAKE_LOCK_SUSPEND,
408 INIT_DELAYED_WORK(&control_usb->usb_det_wakeup_work, do_wakeup);
411 /*register otg_bvalid irq */
412 irq = platform_get_irq_byname(pdev, "otg_bvalid");
413 if ((irq > 0) && control_usb->usb_irq_wakeup) {
414 ret = request_irq(irq, bvalid_irq_handler,
415 0, "otg_bvalid", NULL);
417 dev_err(&pdev->dev, "request_irq %d failed!\n", irq);
419 /* enable bvalid irq */
420 writel(UOC_HIWORD_UPDATE(0x1, 0x1, 14),
421 RK_GRF_VIRT + RK312X_GRF_UOC0_CON0);
427 /********** end of rk3126 usb detections **********/
428 static int rk_usb_control_probe(struct platform_device *pdev)
431 struct device_node *np = pdev->dev.of_node;
435 devm_kzalloc(&pdev->dev, sizeof(*control_usb), GFP_KERNEL);
437 dev_err(&pdev->dev, "unable to alloc memory for control usb\n");
442 control_usb->chip_id = RK3126_USB_CTLR;
443 control_usb->remote_wakeup = of_property_read_bool(np,
444 "rockchip,remote_wakeup");
445 control_usb->usb_irq_wakeup = of_property_read_bool(np,
446 "rockchip,usb_irq_wakeup");
448 INIT_DELAYED_WORK(&control_usb->usb_charger_det_work,
449 usb_battery_charger_detect_work);
451 control_usb->host_gpios =
452 devm_kzalloc(&pdev->dev, sizeof(struct gpio), GFP_KERNEL);
453 if (!control_usb->host_gpios) {
454 dev_err(&pdev->dev, "unable to alloc memory for host_gpios\n");
459 gpio = of_get_named_gpio(np, "host_drv_gpio", 0);
460 control_usb->host_gpios->gpio = gpio;
462 if (!gpio_is_valid(gpio)) {
463 dev_err(&pdev->dev, "invalid host gpio%d\n", gpio);
465 err = devm_gpio_request(&pdev->dev, gpio, "host_drv_gpio");
468 "failed to request GPIO%d for host_drv\n",
473 gpio_direction_output(control_usb->host_gpios->gpio, 1);
476 control_usb->otg_gpios =
477 devm_kzalloc(&pdev->dev, sizeof(struct gpio), GFP_KERNEL);
478 if (!control_usb->otg_gpios) {
479 dev_err(&pdev->dev, "unable to alloc memory for otg_gpios\n");
484 gpio = of_get_named_gpio(np, "otg_drv_gpio", 0);
485 control_usb->otg_gpios->gpio = gpio;
487 if (!gpio_is_valid(gpio)) {
488 dev_err(&pdev->dev, "invalid otg gpio%d\n", gpio);
490 err = devm_gpio_request(&pdev->dev, gpio, "otg_drv_gpio");
493 "failed to request GPIO%d for otg_drv\n", gpio);
497 gpio_direction_output(control_usb->otg_gpios->gpio, 0);
504 static int rk_usb_control_remove(struct platform_device *pdev)
509 static struct platform_driver rk_usb_control_driver = {
510 .probe = rk_usb_control_probe,
511 .remove = rk_usb_control_remove,
513 .name = "rk3126-usb-control",
514 .owner = THIS_MODULE,
515 .of_match_table = of_match_ptr(rk_usb_control_id_table),
521 static const struct of_device_id dwc_otg_control_usb_id_table[] = {
523 .compatible = "rockchip,rk3126-dwc-control-usb",
529 static int dwc_otg_control_usb_probe(struct platform_device *pdev)
531 struct clk *hclk_usb_peri;
535 dev_err(&pdev->dev, "unable to alloc memory for control usb\n");
540 hclk_usb_peri = devm_clk_get(&pdev->dev, "hclk_usb_peri");
541 if (IS_ERR(hclk_usb_peri)) {
542 dev_err(&pdev->dev, "Failed to get hclk_usb_peri\n");
547 control_usb->hclk_usb_peri = hclk_usb_peri;
548 clk_prepare_enable(hclk_usb_peri);
550 #ifdef CONFIG_USB20_OTG
551 if (usb20otg_get_status(USB_STATUS_BVABLID)) {
552 rk_usb_charger_status = USB_BC_TYPE_SDP;
553 schedule_delayed_work(&control_usb->usb_charger_det_work,
558 ret = otg_irq_detect_init(pdev);
565 clk_disable_unprepare(hclk_usb_peri);
570 static int dwc_otg_control_usb_remove(struct platform_device *pdev)
572 clk_disable_unprepare(control_usb->hclk_usb_peri);
576 static struct platform_driver dwc_otg_control_usb_driver = {
577 .probe = dwc_otg_control_usb_probe,
578 .remove = dwc_otg_control_usb_remove,
580 .name = "rk3126-dwc-control-usb",
581 .owner = THIS_MODULE,
582 .of_match_table = of_match_ptr(dwc_otg_control_usb_id_table),
586 static int __init dwc_otg_control_usb_init(void)
590 retval |= platform_driver_register(&rk_usb_control_driver);
591 retval |= platform_driver_register(&dwc_otg_control_usb_driver);
595 subsys_initcall(dwc_otg_control_usb_init);
597 static void __exit dwc_otg_control_usb_exit(void)
599 platform_driver_unregister(&rk_usb_control_driver);
600 platform_driver_unregister(&dwc_otg_control_usb_driver);
603 module_exit(dwc_otg_control_usb_exit);
604 MODULE_ALIAS("platform: dwc_control_usb");
605 MODULE_AUTHOR("RockChip Inc.");
606 MODULE_DESCRIPTION("RockChip Control Module USB Driver");
607 MODULE_LICENSE("GPL v2");