Lines Matching refs:ci
24 #include "ci.h"
63 static inline int ep_to_bit(struct ci_hdrc *ci, int n)
65 int fill = 16 - ci->hw_ep_max / 2;
67 if (n >= ci->hw_ep_max / 2)
75 * @ci: the controller
80 static int hw_device_state(struct ci_hdrc *ci, u32 dma)
83 hw_write(ci, OP_ENDPTLISTADDR, ~0, dma);
85 hw_write(ci, OP_USBINTR, ~0,
88 hw_write(ci, OP_USBINTR, ~0, 0);
95 * @ci: the controller
101 static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir)
107 hw_write(ci, OP_ENDPTFLUSH, ~0, BIT(n));
108 while (hw_read(ci, OP_ENDPTFLUSH, BIT(n)))
110 } while (hw_read(ci, OP_ENDPTSTAT, BIT(n)));
117 * @ci: the controller
123 static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir)
125 hw_write(ci, OP_ENDPTCTRL + num,
132 * @ci: the controller
139 static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type)
162 hw_write(ci, OP_ENDPTCTRL + num, mask, data);
168 * @ci: the controller
174 static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir)
178 return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
183 * @ci: the controller
190 static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
197 if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
200 hw_write(ci, OP_ENDPTPRIME, ~0, BIT(n));
202 while (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
204 if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
214 * @ci: the controller
221 static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value)
232 hw_write(ci, reg, mask_xs|mask_xr,
234 } while (value != hw_ep_get_halt(ci, num, dir));
241 * @ci: the controller
245 static int hw_port_is_high_speed(struct ci_hdrc *ci)
247 return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) :
248 hw_read(ci, OP_PORTSC, PORTSC_HSP);
254 * @ci: the controller
259 static int hw_test_and_clear_complete(struct ci_hdrc *ci, int n)
261 n = ep_to_bit(ci, n);
262 return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n));
268 * @ci: the controller
272 static u32 hw_test_and_clear_intr_active(struct ci_hdrc *ci)
274 u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci);
276 hw_write(ci, OP_USBSTS, ~0, reg);
283 * @ci: the controller
287 static int hw_test_and_clear_setup_guard(struct ci_hdrc *ci)
289 return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0);
295 * @ci: the controller
299 static int hw_test_and_set_setup_guard(struct ci_hdrc *ci)
301 return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
306 * @ci: the controller
312 static void hw_usb_set_address(struct ci_hdrc *ci, u8 value)
314 hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR,
321 * @ci: the controller
325 static int hw_usb_reset(struct ci_hdrc *ci)
327 hw_usb_set_address(ci, 0);
330 hw_write(ci, OP_ENDPTFLUSH, ~0, ~0);
333 hw_write(ci, OP_ENDPTSETUPSTAT, 0, 0);
336 hw_write(ci, OP_ENDPTCOMPLETE, 0, 0);
339 while (hw_read(ci, OP_ENDPTPRIME, ~0))
512 dev_err(hwep->ci->dev, "not supported operation for sg\n");
518 dev_err(hwep->ci->dev, "not page aligned sg buffer\n");
549 struct ci_hdrc *ci = hwep->ci;
559 ret = usb_gadget_map_request_by_dev(ci->dev->parent,
597 if (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
600 hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
601 tmp_stat = hw_read(ci, OP_ENDPTSTAT, BIT(n));
602 } while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW));
603 hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0);
622 ret = hw_ep_prime(ci, hwep->num, hwep->dir,
641 static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep,
648 return hw_ep_prime(ci, hwep->num, hwep->dir,
665 struct ci_hdrc *ci = hwep->ci;
677 if (ci->rev == CI_REVISION_24)
678 if (!hw_read(ci, OP_ENDPTSTAT, BIT(n)))
679 reprime_dtd(ci, hwep, node);
718 usb_gadget_unmap_request_by_dev(hwep->ci->dev->parent,
744 hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
798 retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value);
822 struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
829 usb_ep_fifo_flush(&ci->ep0out->ep);
830 usb_ep_fifo_flush(&ci->ep0in->ep);
837 if (ci->status != NULL) {
838 usb_ep_free_request(&ci->ep0in->ep, ci->status);
839 ci->status = NULL;
842 spin_lock_irqsave(&ci->lock, flags);
843 ci->gadget.speed = USB_SPEED_UNKNOWN;
844 ci->remote_wakeup = 0;
845 ci->suspended = 0;
846 spin_unlock_irqrestore(&ci->lock, flags);
856 * @ci: UDC device
860 static void isr_reset_handler(struct ci_hdrc *ci)
861 __releases(ci->lock)
862 __acquires(ci->lock)
866 spin_unlock(&ci->lock);
867 if (ci->gadget.speed != USB_SPEED_UNKNOWN)
868 usb_gadget_udc_reset(&ci->gadget, ci->driver);
870 retval = _gadget_stop_activity(&ci->gadget);
874 retval = hw_usb_reset(ci);
878 ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC);
879 if (ci->status == NULL)
883 spin_lock(&ci->lock);
886 dev_err(ci->dev, "error: %i\n", retval);
919 struct ci_hdrc *ci = hwep->ci;
927 hwep = (ci->ep0_dir == RX) ?
928 ci->ep0out : ci->ep0in;
931 dev_warn(hwep->ci->dev, "endpoint ctrl %X nuked\n",
938 dev_err(hwep->ci->dev, "request length too big for isochronous\n");
944 dev_err(hwep->ci->dev, "request already in queue\n");
964 * @ci: ci struct
969 static int isr_get_status_response(struct ci_hdrc *ci,
974 struct ci_hw_ep *hwep = ci->ep0in;
997 *(u16 *)req->buf = (ci->remote_wakeup << 1) |
998 ci->gadget.is_selfpowered;
1004 *(u16 *)req->buf = hw_ep_get_halt(ci, num, dir);
1034 struct ci_hdrc *ci = req->context;
1040 if (ci->setaddr) {
1041 hw_usb_set_address(ci, ci->address);
1042 ci->setaddr = false;
1043 if (ci->address)
1044 usb_gadget_set_state(&ci->gadget, USB_STATE_ADDRESS);
1047 spin_lock_irqsave(&ci->lock, flags);
1048 if (ci->test_mode)
1049 hw_port_test_set(ci, ci->test_mode);
1050 spin_unlock_irqrestore(&ci->lock, flags);
1055 * @ci: ci struct
1059 static int isr_setup_status_phase(struct ci_hdrc *ci)
1066 * being called with ci->status equal to NULL.
1069 if (WARN_ON_ONCE(!ci->status))
1072 hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;
1073 ci->status->context = ci;
1074 ci->status->complete = isr_setup_status_complete;
1076 return _ep_queue(&hwep->ep, ci->status, GFP_ATOMIC);
1104 hweptemp = hwep->ci->ep0in;
1116 static int otg_a_alt_hnp_support(struct ci_hdrc *ci)
1118 dev_warn(&ci->gadget.dev,
1120 return isr_setup_status_phase(ci);
1125 * @ci: UDC descriptor
1129 static void isr_setup_packet_handler(struct ci_hdrc *ci)
1130 __releases(ci->lock)
1131 __acquires(ci->lock)
1133 struct ci_hw_ep *hwep = &ci->ci_hw_ep[0];
1142 _ep_nuke(ci->ep0out);
1143 _ep_nuke(ci->ep0in);
1147 hw_test_and_set_setup_guard(ci);
1149 } while (!hw_test_and_clear_setup_guard(ci));
1153 ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
1166 num += ci->hw_ep_max / 2;
1167 if (!ci->ci_hw_ep[num].wedge) {
1168 spin_unlock(&ci->lock);
1170 &ci->ci_hw_ep[num].ep);
1171 spin_lock(&ci->lock);
1175 err = isr_setup_status_phase(ci);
1181 ci->remote_wakeup = 0;
1182 err = isr_setup_status_phase(ci);
1196 err = isr_get_status_response(ci, &req);
1204 ci->address = (u8)le16_to_cpu(req.wValue);
1205 ci->setaddr = true;
1206 err = isr_setup_status_phase(ci);
1218 num += ci->hw_ep_max / 2;
1220 spin_unlock(&ci->lock);
1221 err = _ep_set_halt(&ci->ci_hw_ep[num].ep, 1, false);
1222 spin_lock(&ci->lock);
1224 isr_setup_status_phase(ci);
1230 ci->remote_wakeup = 1;
1231 err = isr_setup_status_phase(ci);
1241 ci->test_mode = tmode;
1243 ci);
1250 if (ci_otg_is_fsm_mode(ci)) {
1251 ci->gadget.b_hnp_enable = 1;
1253 ci);
1257 if (ci_otg_is_fsm_mode(ci))
1258 err = otg_a_alt_hnp_support(ci);
1261 if (ci_otg_is_fsm_mode(ci)) {
1262 ci->gadget.a_hnp_support = 1;
1264 ci);
1277 ci->ep0_dir = TX;
1279 spin_unlock(&ci->lock);
1280 err = ci->driver->setup(&ci->gadget, &req);
1281 spin_lock(&ci->lock);
1286 spin_unlock(&ci->lock);
1288 dev_err(ci->dev, "error: _ep_set_halt\n");
1289 spin_lock(&ci->lock);
1295 * @ci: UDC descriptor
1299 static void isr_tr_complete_handler(struct ci_hdrc *ci)
1300 __releases(ci->lock)
1301 __acquires(ci->lock)
1306 for (i = 0; i < ci->hw_ep_max; i++) {
1307 struct ci_hw_ep *hwep = &ci->ci_hw_ep[i];
1312 if (hw_test_and_clear_complete(ci, i)) {
1316 err = isr_setup_status_phase(ci);
1318 spin_unlock(&ci->lock);
1320 dev_err(ci->dev,
1322 spin_lock(&ci->lock);
1329 hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(0)))
1330 isr_setup_packet_handler(ci);
1358 dev_warn(hwep->ci->dev, "enabling a non-empty endpoint!\n");
1389 dev_err(hwep->ci->dev, "Set control xfer at non-ep0\n");
1398 retval |= hw_ep_enable(hwep->ci, hwep->num, hwep->dir,
1422 if (hwep->ci->gadget.speed == USB_SPEED_UNKNOWN) {
1432 retval |= hw_ep_disable(hwep->ci, hwep->num, hwep->dir);
1481 dev_err(hwep->ci->dev, "freeing queued request\n");
1515 if (hwep->ci->gadget.speed == USB_SPEED_UNKNOWN) {
1542 if (hwep->ci->gadget.speed != USB_SPEED_UNKNOWN)
1543 hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
1554 usb_gadget_unmap_request(&hwep->ci->gadget, req, hwep->dir);
1609 dev_err(hwep->ci->dev, "%02X: -EINVAL\n", _usb_addr(hwep));
1614 if (hwep->ci->gadget.speed == USB_SPEED_UNKNOWN) {
1619 hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
1648 struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
1651 pm_runtime_get_sync(ci->dev);
1652 hw_device_reset(ci);
1653 spin_lock_irq(&ci->lock);
1654 if (ci->driver) {
1655 hw_device_state(ci, ci->ep0out->qh.dma);
1657 spin_unlock_irq(&ci->lock);
1660 spin_unlock_irq(&ci->lock);
1664 if (ci->driver)
1665 ci->driver->disconnect(&ci->gadget);
1666 hw_device_state(ci, 0);
1667 if (ci->platdata->notify_event)
1668 ci->platdata->notify_event(ci,
1670 _gadget_stop_activity(&ci->gadget);
1671 pm_runtime_put_sync(ci->dev);
1678 struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
1682 spin_lock_irqsave(&ci->lock, flags);
1683 ci->vbus_active = is_active;
1684 spin_unlock_irqrestore(&ci->lock, flags);
1686 if (ci->usb_phy)
1687 usb_phy_set_charger_state(ci->usb_phy, is_active ?
1690 if (ci->platdata->notify_event)
1691 ret = ci->platdata->notify_event(ci,
1694 if (ci->driver)
1702 struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
1706 spin_lock_irqsave(&ci->lock, flags);
1707 if (ci->gadget.speed == USB_SPEED_UNKNOWN) {
1708 spin_unlock_irqrestore(&ci->lock, flags);
1711 if (!ci->remote_wakeup) {
1715 if (!hw_read(ci, OP_PORTSC, PORTSC_SUSP)) {
1719 hw_write(ci, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
1721 spin_unlock_irqrestore(&ci->lock, flags);
1727 struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
1729 if (ci->usb_phy)
1730 return usb_phy_set_power(ci->usb_phy, ma);
1736 struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
1737 struct ci_hw_ep *hwep = ci->ep0in;
1752 struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
1758 if (ci_otg_is_fsm_mode(ci) || ci->role == CI_ROLE_HOST)
1761 pm_runtime_get_sync(ci->dev);
1763 hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
1765 hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
1766 pm_runtime_put_sync(ci->dev);
1780 struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
1784 list_for_each_entry_reverse(ep, &ci->gadget.ep_list, ep_list) {
1809 static int init_eps(struct ci_hdrc *ci)
1813 for (i = 0; i < ci->hw_ep_max/2; i++)
1815 int k = i + j * ci->hw_ep_max/2;
1816 struct ci_hw_ep *hwep = &ci->ci_hw_ep[k];
1821 hwep->ci = ci;
1822 hwep->lock = &ci->lock;
1823 hwep->td_pool = ci->td_pool;
1849 hwep->qh.ptr = dma_pool_zalloc(ci->qh_pool, GFP_KERNEL,
1860 ci->ep0out = hwep;
1862 ci->ep0in = hwep;
1868 list_add_tail(&hwep->ep.ep_list, &ci->gadget.ep_list);
1874 static void destroy_eps(struct ci_hdrc *ci)
1878 for (i = 0; i < ci->hw_ep_max; i++) {
1879 struct ci_hw_ep *hwep = &ci->ci_hw_ep[i];
1883 dma_pool_free(ci->qh_pool, hwep->qh.ptr, hwep->qh.dma);
1897 struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
1903 ci->ep0out->ep.desc = &ctrl_endpt_out_desc;
1904 retval = usb_ep_enable(&ci->ep0out->ep);
1908 ci->ep0in->ep.desc = &ctrl_endpt_in_desc;
1909 retval = usb_ep_enable(&ci->ep0in->ep);
1913 ci->driver = driver;
1916 if (ci_otg_is_fsm_mode(ci) && ci->fsm.id) {
1917 ci_hdrc_otg_fsm_start(ci);
1921 if (ci->vbus_active)
1924 usb_udc_vbus_handler(&ci->gadget, false);
1929 static void ci_udc_stop_for_otg_fsm(struct ci_hdrc *ci)
1931 if (!ci_otg_is_fsm_mode(ci))
1934 mutex_lock(&ci->fsm.lock);
1935 if (ci->fsm.otg->state == OTG_STATE_A_PERIPHERAL) {
1936 ci->fsm.a_bidl_adis_tmout = 1;
1937 ci_hdrc_otg_fsm_start(ci);
1938 } else if (ci->fsm.otg->state == OTG_STATE_B_PERIPHERAL) {
1939 ci->fsm.protocol = PROTO_UNDEF;
1940 ci->fsm.otg->state = OTG_STATE_UNDEFINED;
1942 mutex_unlock(&ci->fsm.lock);
1950 struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
1953 spin_lock_irqsave(&ci->lock, flags);
1954 ci->driver = NULL;
1956 if (ci->vbus_active) {
1957 hw_device_state(ci, 0);
1958 spin_unlock_irqrestore(&ci->lock, flags);
1959 if (ci->platdata->notify_event)
1960 ci->platdata->notify_event(ci,
1962 _gadget_stop_activity(&ci->gadget);
1963 spin_lock_irqsave(&ci->lock, flags);
1964 pm_runtime_put(ci->dev);
1967 spin_unlock_irqrestore(&ci->lock, flags);
1969 ci_udc_stop_for_otg_fsm(ci);
1977 * udc_irq: ci interrupt handler
1982 static irqreturn_t udc_irq(struct ci_hdrc *ci)
1987 if (ci == NULL)
1990 spin_lock(&ci->lock);
1992 if (ci->platdata->flags & CI_HDRC_REGS_SHARED) {
1993 if (hw_read(ci, OP_USBMODE, USBMODE_CM) !=
1995 spin_unlock(&ci->lock);
1999 intr = hw_test_and_clear_intr_active(ci);
2004 isr_reset_handler(ci);
2007 ci->gadget.speed = hw_port_is_high_speed(ci) ?
2009 if (ci->suspended) {
2010 if (ci->driver->resume) {
2011 spin_unlock(&ci->lock);
2012 ci->driver->resume(&ci->gadget);
2013 spin_lock(&ci->lock);
2015 ci->suspended = 0;
2016 usb_gadget_set_state(&ci->gadget,
2017 ci->resume_state);
2022 isr_tr_complete_handler(ci);
2024 if ((USBi_SLI & intr) && !(ci->suspended)) {
2025 ci->suspended = 1;
2026 ci->resume_state = ci->gadget.state;
2027 if (ci->gadget.speed != USB_SPEED_UNKNOWN &&
2028 ci->driver->suspend) {
2029 spin_unlock(&ci->lock);
2030 ci->driver->suspend(&ci->gadget);
2031 spin_lock(&ci->lock);
2033 usb_gadget_set_state(&ci->gadget,
2040 spin_unlock(&ci->lock);
2047 * @ci: chipidea controller
2049 static int udc_start(struct ci_hdrc *ci)
2051 struct device *dev = ci->dev;
2052 struct usb_otg_caps *otg_caps = &ci->platdata->ci_otg_caps;
2055 ci->gadget.ops = &usb_gadget_ops;
2056 ci->gadget.speed = USB_SPEED_UNKNOWN;
2057 ci->gadget.max_speed = USB_SPEED_HIGH;
2058 ci->gadget.name = ci->platdata->name;
2059 ci->gadget.otg_caps = otg_caps;
2060 ci->gadget.sg_supported = 1;
2061 ci->gadget.irq = ci->irq;
2063 if (ci->platdata->flags & CI_HDRC_REQUIRES_ALIGNED_DMA)
2064 ci->gadget.quirk_avoids_skb_reserve = 1;
2066 if (ci->is_otg && (otg_caps->hnp_support || otg_caps->srp_support ||
2068 ci->gadget.is_otg = 1;
2070 INIT_LIST_HEAD(&ci->gadget.ep_list);
2073 ci->qh_pool = dma_pool_create("ci_hw_qh", dev->parent,
2076 if (ci->qh_pool == NULL)
2079 ci->td_pool = dma_pool_create("ci_hw_td", dev->parent,
2082 if (ci->td_pool == NULL) {
2087 retval = init_eps(ci);
2091 ci->gadget.ep0 = &ci->ep0in->ep;
2093 retval = usb_add_gadget_udc(dev, &ci->gadget);
2100 destroy_eps(ci);
2102 dma_pool_destroy(ci->td_pool);
2104 dma_pool_destroy(ci->qh_pool);
2113 void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
2115 if (!ci->roles[CI_ROLE_GADGET])
2118 usb_del_gadget_udc(&ci->gadget);
2120 destroy_eps(ci);
2122 dma_pool_destroy(ci->td_pool);
2123 dma_pool_destroy(ci->qh_pool);
2126 static int udc_id_switch_for_device(struct ci_hdrc *ci)
2128 if (ci->platdata->pins_device)
2129 pinctrl_select_state(ci->platdata->pctl,
2130 ci->platdata->pins_device);
2132 if (ci->is_otg)
2134 hw_write_otgsc(ci, OTGSC_BSVIS | OTGSC_BSVIE,
2140 static void udc_id_switch_for_host(struct ci_hdrc *ci)
2146 if (ci->is_otg)
2147 hw_write_otgsc(ci, OTGSC_BSVIE | OTGSC_BSVIS, OTGSC_BSVIS);
2149 ci->vbus_active = 0;
2151 if (ci->platdata->pins_device && ci->platdata->pins_default)
2152 pinctrl_select_state(ci->platdata->pctl,
2153 ci->platdata->pins_default);
2158 * @ci: the controller
2162 int ci_hdrc_gadget_init(struct ci_hdrc *ci)
2167 if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_DC))
2170 rdrv = devm_kzalloc(ci->dev, sizeof(*rdrv), GFP_KERNEL);
2179 ret = udc_start(ci);
2181 ci->roles[CI_ROLE_GADGET] = rdrv;