diff options
Diffstat (limited to 'target/linux/cns3xxx/files/drivers/usb/dwc/otg_cil_intr.c')
| -rw-r--r-- | target/linux/cns3xxx/files/drivers/usb/dwc/otg_cil_intr.c | 852 |
1 files changed, 0 insertions, 852 deletions
diff --git a/target/linux/cns3xxx/files/drivers/usb/dwc/otg_cil_intr.c b/target/linux/cns3xxx/files/drivers/usb/dwc/otg_cil_intr.c deleted file mode 100644 index a40489380e..0000000000 --- a/target/linux/cns3xxx/files/drivers/usb/dwc/otg_cil_intr.c +++ /dev/null @@ -1,852 +0,0 @@ -/* ========================================================================== - * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil_intr.c $ - * $Revision: #10 $ - * $Date: 2008/07/16 $ - * $Change: 1065567 $ - * - * Synopsys HS OTG Linux Software Driver and documentation (hereinafter, - * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless - * otherwise expressly agreed to in writing between Synopsys and you. - * - * The Software IS NOT an item of Licensed Software or Licensed Product under - * any End User Software License Agreement or Agreement for Licensed Product - * with Synopsys or any supplement thereto. You are permitted to use and - * redistribute this Software in source and binary forms, with or without - * modification, provided that redistributions of source code must retain this - * notice. You may not view, use, disclose, copy or distribute this file or - * any information contained herein except pursuant to this license grant from - * Synopsys. If you do not agree with this notice, including the disclaimer - * below, then you are not authorized to use the Software. - * - * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * ========================================================================== */ - -/** @file - * - * The Core Interface Layer provides basic services for accessing and - * managing the DWC_otg hardware. These services are used by both the - * Host Controller Driver and the Peripheral Controller Driver. - * - * This file contains the Common Interrupt handlers. - */ -#include "otg_plat.h" -#include "otg_regs.h" -#include "otg_cil.h" -#include "otg_pcd.h" - -#ifdef DEBUG -inline const char *op_state_str(dwc_otg_core_if_t *core_if) -{ - return (core_if->op_state==A_HOST?"a_host": - (core_if->op_state==A_SUSPEND?"a_suspend": - (core_if->op_state==A_PERIPHERAL?"a_peripheral": - (core_if->op_state==B_PERIPHERAL?"b_peripheral": - (core_if->op_state==B_HOST?"b_host": - "unknown"))))); -} -#endif - -/** This function will log a debug message - * - * @param core_if Programming view of DWC_otg controller. - */ -int32_t dwc_otg_handle_mode_mismatch_intr (dwc_otg_core_if_t *core_if) -{ - gintsts_data_t gintsts; - DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n", - dwc_otg_mode(core_if) ? "Host" : "Device"); - - /* Clear interrupt */ - gintsts.d32 = 0; - gintsts.b.modemismatch = 1; - dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32); - return 1; -} - -/** Start the HCD. Helper function for using the HCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void hcd_start(dwc_otg_core_if_t *core_if) -{ - if (core_if->hcd_cb && core_if->hcd_cb->start) { - core_if->hcd_cb->start(core_if->hcd_cb->p); - } -} -/** Stop the HCD. Helper function for using the HCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void hcd_stop(dwc_otg_core_if_t *core_if) -{ - if (core_if->hcd_cb && core_if->hcd_cb->stop) { - core_if->hcd_cb->stop(core_if->hcd_cb->p); - } -} -/** Disconnect the HCD. Helper function for using the HCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void hcd_disconnect(dwc_otg_core_if_t *core_if) -{ - if (core_if->hcd_cb && core_if->hcd_cb->disconnect) { - core_if->hcd_cb->disconnect(core_if->hcd_cb->p); - } -} -/** Inform the HCD the a New Session has begun. Helper function for - * using the HCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void hcd_session_start(dwc_otg_core_if_t *core_if) -{ - if (core_if->hcd_cb && core_if->hcd_cb->session_start) { - core_if->hcd_cb->session_start(core_if->hcd_cb->p); - } -} - -/** Start the PCD. Helper function for using the PCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void pcd_start(dwc_otg_core_if_t *core_if) -{ - if (core_if->pcd_cb && core_if->pcd_cb->start) { - core_if->pcd_cb->start(core_if->pcd_cb->p); - } -} -/** Stop the PCD. Helper function for using the PCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void pcd_stop(dwc_otg_core_if_t *core_if) -{ - if (core_if->pcd_cb && core_if->pcd_cb->stop) { - core_if->pcd_cb->stop(core_if->pcd_cb->p); - } -} -/** Suspend the PCD. Helper function for using the PCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void pcd_suspend(dwc_otg_core_if_t *core_if) -{ - if (core_if->pcd_cb && core_if->pcd_cb->suspend) { - core_if->pcd_cb->suspend(core_if->pcd_cb->p); - } -} -/** Resume the PCD. Helper function for using the PCD callbacks. - * - * @param core_if Programming view of DWC_otg controller. - */ -static inline void pcd_resume(dwc_otg_core_if_t *core_if) -{ - if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) { - core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p); - } -} - -/** - * This function handles the OTG Interrupts. It reads the OTG - * Interrupt Register (GOTGINT) to determine what interrupt has - * occurred. - * - * @param core_if Programming view of DWC_otg controller. - */ -int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t *core_if) -{ - dwc_otg_core_global_regs_t *global_regs = - core_if->core_global_regs; - gotgint_data_t gotgint; - gotgctl_data_t gotgctl; - gintmsk_data_t gintmsk; - gotgint.d32 = dwc_read_reg32(&global_regs->gotgint); - gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); - DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32, - op_state_str(core_if)); - //DWC_DEBUGPL(DBG_CIL, "gotgctl=%08x\n", gotgctl.d32); - - if (gotgint.b.sesenddet) { - DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " - "Session End Detected++ (%s)\n", - op_state_str(core_if)); - gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); - - if (core_if->op_state == B_HOST) { - - dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_start(core_if); - - SPIN_UNLOCK(&pcd->lock); - core_if->op_state = B_PERIPHERAL; - } else { - dwc_otg_pcd_t *pcd; - - /* If not B_HOST and Device HNP still set. HNP - * Did not succeed!*/ - if (gotgctl.b.devhnpen) { - DWC_DEBUGPL(DBG_ANY, "Session End Detected\n"); - DWC_ERROR("Device Not Connected/Responding!\n"); - } - - /* If Session End Detected the B-Cable has - * been disconnected. */ - /* Reset PCD and Gadget driver to a - * clean state. */ - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_stop(core_if); - - SPIN_UNLOCK(&pcd->lock); - } - gotgctl.d32 = 0; - gotgctl.b.devhnpen = 1; - dwc_modify_reg32(&global_regs->gotgctl, - gotgctl.d32, 0); - } - if (gotgint.b.sesreqsucstschng) { - DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " - "Session Reqeust Success Status Change++\n"); - gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); - if (gotgctl.b.sesreqscs) { - if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) && - (core_if->core_params->i2c_enable)) { - core_if->srp_success = 1; - } - else { - dwc_otg_pcd_t *pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_resume(core_if); - - SPIN_UNLOCK(&pcd->lock); - /* Clear Session Request */ - gotgctl.d32 = 0; - gotgctl.b.sesreq = 1; - dwc_modify_reg32(&global_regs->gotgctl, - gotgctl.d32, 0); - } - } - } - if (gotgint.b.hstnegsucstschng) { - /* Print statements during the HNP interrupt handling - * can cause it to fail.*/ - gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl); - if (gotgctl.b.hstnegscs) { - if (dwc_otg_is_host_mode(core_if)) { - dwc_otg_pcd_t *pcd; - - core_if->op_state = B_HOST; - /* - * Need to disable SOF interrupt immediately. - * When switching from device to host, the PCD - * interrupt handler won't handle the - * interrupt if host mode is already set. The - * HCD interrupt handler won't get called if - * the HCD state is HALT. This means that the - * interrupt does not get handled and Linux - * complains loudly. - */ - gintmsk.d32 = 0; - gintmsk.b.sofintr = 1; - dwc_modify_reg32(&global_regs->gintmsk, - gintmsk.d32, 0); - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_stop(core_if); - - SPIN_UNLOCK(&pcd->lock); - /* - * Initialize the Core for Host mode. - */ - hcd_start(core_if); - core_if->op_state = B_HOST; - } - } else { - gotgctl.d32 = 0; - gotgctl.b.hnpreq = 1; - gotgctl.b.devhnpen = 1; - dwc_modify_reg32(&global_regs->gotgctl, - gotgctl.d32, 0); - DWC_DEBUGPL(DBG_ANY, "HNP Failed\n"); - DWC_ERROR("Device Not Connected/Responding\n"); - } - } - if (gotgint.b.hstnegdet) { - /* The disconnect interrupt is set at the same time as - * Host Negotiation Detected. During the mode - * switch all interrupts are cleared so the disconnect - * interrupt handler will not get executed. - */ - DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " - "Host Negotiation Detected++ (%s)\n", - (dwc_otg_is_host_mode(core_if)?"Host":"Device")); - if (dwc_otg_is_device_mode(core_if)){ - dwc_otg_pcd_t *pcd; - - DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n", core_if->op_state); - hcd_disconnect(core_if); - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_start(core_if); - - SPIN_UNLOCK(&pcd->lock); - core_if->op_state = A_PERIPHERAL; - } else { - dwc_otg_pcd_t *pcd; - - /* - * Need to disable SOF interrupt immediately. When - * switching from device to host, the PCD interrupt - * handler won't handle the interrupt if host mode is - * already set. The HCD interrupt handler won't get - * called if the HCD state is HALT. This means that - * the interrupt does not get handled and Linux - * complains loudly. - */ - gintmsk.d32 = 0; - gintmsk.b.sofintr = 1; - dwc_modify_reg32(&global_regs->gintmsk, - gintmsk.d32, 0); - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_stop(core_if); - - SPIN_UNLOCK(&pcd->lock); - hcd_start(core_if); - core_if->op_state = A_HOST; - } - } - if (gotgint.b.adevtoutchng) { - DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " - "A-Device Timeout Change++\n"); - } - if (gotgint.b.debdone) { - DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " - "Debounce Done++\n"); - } - - /* Clear GOTGINT */ - dwc_write_reg32 (&core_if->core_global_regs->gotgint, gotgint.d32); - - return 1; -} - - -void w_conn_id_status_change(struct work_struct *p) -{ - dwc_otg_core_if_t *core_if = container_of(p, dwc_otg_core_if_t, w_conn_id); - - uint32_t count = 0; - gotgctl_data_t gotgctl = { .d32 = 0 }; - - gotgctl.d32 = dwc_read_reg32(&core_if->core_global_regs->gotgctl); - DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32); - DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts); - - /* B-Device connector (Device Mode) */ - if (gotgctl.b.conidsts) { - dwc_otg_pcd_t *pcd; - - /* Wait for switch to device mode. */ - while (!dwc_otg_is_device_mode(core_if)){ - DWC_PRINT("Waiting for Peripheral Mode, Mode=%s\n", - (dwc_otg_is_host_mode(core_if)?"Host":"Peripheral")); - MDELAY(100); - if (++count > 10000) *(uint32_t*)NULL=0; - } - core_if->op_state = B_PERIPHERAL; - dwc_otg_core_init(core_if); - dwc_otg_enable_global_interrupts(core_if); - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_start(core_if); - - SPIN_UNLOCK(&pcd->lock); - } else { - /* A-Device connector (Host Mode) */ - while (!dwc_otg_is_host_mode(core_if)) { - DWC_PRINT("Waiting for Host Mode, Mode=%s\n", - (dwc_otg_is_host_mode(core_if)?"Host":"Peripheral")); - MDELAY(100); - if (++count > 10000) *(uint32_t*)NULL=0; - } - core_if->op_state = A_HOST; - /* - * Initialize the Core for Host mode. - */ - dwc_otg_core_init(core_if); - dwc_otg_enable_global_interrupts(core_if); - hcd_start(core_if); - } -} - - -/** - * This function handles the Connector ID Status Change Interrupt. It - * reads the OTG Interrupt Register (GOTCTL) to determine whether this - * is a Device to Host Mode transition or a Host Mode to Device - * Transition. - * - * This only occurs when the cable is connected/removed from the PHY - * connector. - * - * @param core_if Programming view of DWC_otg controller. - */ -int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t *core_if) -{ - - /* - * Need to disable SOF interrupt immediately. If switching from device - * to host, the PCD interrupt handler won't handle the interrupt if - * host mode is already set. The HCD interrupt handler won't get - * called if the HCD state is HALT. This means that the interrupt does - * not get handled and Linux complains loudly. - */ - gintmsk_data_t gintmsk = { .d32 = 0 }; - gintsts_data_t gintsts = { .d32 = 0 }; - - gintmsk.b.sofintr = 1; - dwc_modify_reg32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0); - - DWC_DEBUGPL(DBG_CIL, " ++Connector ID Status Change Interrupt++ (%s)\n", - (dwc_otg_is_host_mode(core_if)?"Host":"Device")); - - /* - * Need to schedule a work, as there are possible DELAY function calls - */ - queue_work(core_if->wq_otg, &core_if->w_conn_id); - - /* Set flag and clear interrupt */ - gintsts.b.conidstschng = 1; - dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32); - - return 1; -} - -/** - * This interrupt indicates that a device is initiating the Session - * Request Protocol to request the host to turn on bus power so a new - * session can begin. The handler responds by turning on bus power. If - * the DWC_otg controller is in low power mode, the handler brings the - * controller out of low power mode before turning on bus power. - * - * @param core_if Programming view of DWC_otg controller. - */ -int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t *core_if) -{ - hprt0_data_t hprt0; - gintsts_data_t gintsts; - -#ifndef DWC_HOST_ONLY - DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n"); - - if (dwc_otg_is_device_mode(core_if)) { - DWC_PRINT("SRP: Device mode\n"); - } else { - DWC_PRINT("SRP: Host mode\n"); - - /* Turn on the port power bit. */ - hprt0.d32 = dwc_otg_read_hprt0(core_if); - hprt0.b.prtpwr = 1; - dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); - - /* Start the Connection timer. So a message can be displayed - * if connect does not occur within 10 seconds. */ - hcd_session_start(core_if); - } -#endif - - /* Clear interrupt */ - gintsts.d32 = 0; - gintsts.b.sessreqintr = 1; - dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32); - - return 1; -} - - -void w_wakeup_detected(struct work_struct *p) -{ - struct delayed_work *dw = container_of(p, struct delayed_work, work); - dwc_otg_core_if_t *core_if = container_of(dw, dwc_otg_core_if_t, w_wkp); - - /* - * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms - * so that OPT tests pass with all PHYs). - */ - hprt0_data_t hprt0 = {.d32=0}; - hprt0.d32 = dwc_otg_read_hprt0(core_if); - DWC_DEBUGPL(DBG_ANY,"Resume: HPRT0=%0x\n", hprt0.d32); -// MDELAY(70); - hprt0.b.prtres = 0; /* Resume */ - dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32); - DWC_DEBUGPL(DBG_ANY,"Clear Resume: HPRT0=%0x\n", dwc_read_reg32(core_if->host_if->hprt0)); -} -/** - * This interrupt indicates that the DWC_otg controller has detected a - * resume or remote wakeup sequence. If the DWC_otg controller is in - * low power mode, the handler must brings the controller out of low - * power mode. The controller automatically begins resume - * signaling. The handler schedules a time to stop resume signaling. - */ -int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t *core_if) -{ - gintsts_data_t gintsts; - - DWC_DEBUGPL(DBG_ANY, "++Resume and Remote Wakeup Detected Interrupt++\n"); - - if (dwc_otg_is_device_mode(core_if)) { - dctl_data_t dctl = {.d32=0}; - DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", - dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts)); -#ifdef PARTIAL_POWER_DOWN - if (core_if->hwcfg4.b.power_optimiz) { - pcgcctl_data_t power = {.d32=0}; - - power.d32 = dwc_read_reg32(core_if->pcgcctl); - DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n", power.d32); - - power.b.stoppclk = 0; - dwc_write_reg32(core_if->pcgcctl, power.d32); - - power.b.pwrclmp = 0; - dwc_write_reg32(core_if->pcgcctl, power.d32); - - power.b.rstpdwnmodule = 0; - dwc_write_reg32(core_if->pcgcctl, power.d32); - } -#endif - /* Clear the Remote Wakeup Signalling */ - dctl.b.rmtwkupsig = 1; - dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dctl, - dctl.d32, 0); - - if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) { - core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p); - } - - } else { - pcgcctl_data_t pcgcctl = {.d32=0}; - - /* Restart the Phy Clock */ - pcgcctl.b.stoppclk = 1; - dwc_modify_reg32(core_if->pcgcctl, pcgcctl.d32, 0); - - queue_delayed_work(core_if->wq_otg, &core_if->w_wkp, ((70 * HZ / 1000) + 1)); - } - - /* Clear interrupt */ - gintsts.d32 = 0; - gintsts.b.wkupintr = 1; - dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32); - - return 1; -} - -/** - * This interrupt indicates that a device has been disconnected from - * the root port. - */ -int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t *core_if) -{ - gintsts_data_t gintsts; - - DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n", - (dwc_otg_is_host_mode(core_if)?"Host":"Device"), - op_state_str(core_if)); - -/** @todo Consolidate this if statement. */ -#ifndef DWC_HOST_ONLY - if (core_if->op_state == B_HOST) { - dwc_otg_pcd_t *pcd; - - /* If in device mode Disconnect and stop the HCD, then - * start the PCD. */ - hcd_disconnect(core_if); - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_start(core_if); - - SPIN_UNLOCK(&pcd->lock); - core_if->op_state = B_PERIPHERAL; - } else if (dwc_otg_is_device_mode(core_if)) { - gotgctl_data_t gotgctl = { .d32 = 0 }; - gotgctl.d32 = dwc_read_reg32(&core_if->core_global_regs->gotgctl); - if (gotgctl.b.hstsethnpen==1) { - /* Do nothing, if HNP in process the OTG - * interrupt "Host Negotiation Detected" - * interrupt will do the mode switch. - */ - } else if (gotgctl.b.devhnpen == 0) { - dwc_otg_pcd_t *pcd; - - /* If in device mode Disconnect and stop the HCD, then - * start the PCD. */ - hcd_disconnect(core_if); - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_start(core_if); - - SPIN_UNLOCK(&pcd->lock); - - core_if->op_state = B_PERIPHERAL; - } else { - DWC_DEBUGPL(DBG_ANY,"!a_peripheral && !devhnpen\n"); - } - } else { - if (core_if->op_state == A_HOST) { - /* A-Cable still connected but device disconnected. */ - hcd_disconnect(core_if); - } - } -#endif - - gintsts.d32 = 0; - gintsts.b.disconnect = 1; - dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32); - return 1; -} -/** - * This interrupt indicates that SUSPEND state has been detected on - * the USB. - * - * For HNP the USB Suspend interrupt signals the change from - * "a_peripheral" to "a_host". - * - * When power management is enabled the core will be put in low power - * mode. - */ -int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t *core_if) -{ - dsts_data_t dsts; - gintsts_data_t gintsts; - - DWC_DEBUGPL(DBG_ANY,"USB SUSPEND\n"); - - if (dwc_otg_is_device_mode(core_if)) { - dwc_otg_pcd_t *pcd; - - /* Check the Device status register to determine if the Suspend - * state is active. */ - dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts); - DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32); - DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d " - "HWCFG4.power Optimize=%d\n", - dsts.b.suspsts, core_if->hwcfg4.b.power_optimiz); - - -#ifdef PARTIAL_POWER_DOWN -/** @todo Add a module parameter for power management. */ - if (dsts.b.suspsts && core_if->hwcfg4.b.power_optimiz) { - pcgcctl_data_t power = {.d32=0}; - DWC_DEBUGPL(DBG_CIL, "suspend\n"); - - power.b.pwrclmp = 1; - dwc_write_reg32(core_if->pcgcctl, power.d32); - - power.b.rstpdwnmodule = 1; - dwc_modify_reg32(core_if->pcgcctl, 0, power.d32); - - power.b.stoppclk = 1; - dwc_modify_reg32(core_if->pcgcctl, 0, power.d32); - } else { - DWC_DEBUGPL(DBG_ANY,"disconnect?\n"); - } -#endif - /* PCD callback for suspend. */ - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_suspend(core_if); - - SPIN_UNLOCK(&pcd->lock); - } else { - if (core_if->op_state == A_PERIPHERAL) { - dwc_otg_pcd_t *pcd; - - DWC_DEBUGPL(DBG_ANY,"a_peripheral->a_host\n"); - /* Clear the a_peripheral flag, back to a_host. */ - - pcd=(dwc_otg_pcd_t *)core_if->pcd_cb->p; - if(unlikely(!pcd)) { - DWC_ERROR("%s: data structure not initialized properly, core_if->pcd_cb->p = NULL!!!",__func__); - BUG(); - } - SPIN_LOCK(&pcd->lock); - - pcd_stop(core_if); - - SPIN_UNLOCK(&pcd->lock); - - hcd_start(core_if); - core_if->op_state = A_HOST; - } - } - - /* Clear interrupt */ - gintsts.d32 = 0; - gintsts.b.usbsuspend = 1; - dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32); - - return 1; -} - - -/** - * This function returns the Core Interrupt register. - */ -static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t *core_if) -{ - gintsts_data_t gintsts; - gintmsk_data_t gintmsk; - gintmsk_data_t gintmsk_common = {.d32=0}; - gintmsk_common.b.wkupintr = 1; - gintmsk_common.b.sessreqintr = 1; - gintmsk_common.b.conidstschng = 1; - gintmsk_common.b.otgintr = 1; - gintmsk_common.b.modemismatch = 1; - gintmsk_common.b.disconnect = 1; - gintmsk_common.b.usbsuspend = 1; - /** @todo: The port interrupt occurs while in device - * mode. Added code to CIL to clear the interrupt for now! - */ - gintmsk_common.b.portintr = 1; - - gintsts.d32 = dwc_read_reg32(&core_if->core_global_regs->gintsts); - gintmsk.d32 = dwc_read_reg32(&core_if->core_global_regs->gintmsk); -#ifdef DEBUG - /* if any common interrupts set */ - if (gintsts.d32 & gintmsk_common.d32) { - DWC_DEBUGPL(DBG_ANY, "gintsts=%08x gintmsk=%08x\n", - gintsts.d32, gintmsk.d32); - } -#endif - - return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32); - -} - -/** - * Common interrupt handler. - * - * The common interrupts are those that occur in both Host and Device mode. - * This handler handles the following interrupts: - * - Mode Mismatch Interrupt - * - Disconnect Interrupt - * - OTG Interrupt - * - Connector ID Status Change Interrupt - * - Session Request Interrupt. - * - Resume / Remote Wakeup Detected Interrupt. - * - */ -int32_t dwc_otg_handle_common_intr(dwc_otg_core_if_t *core_if) -{ - int retval = 0; - gintsts_data_t gintsts; - - gintsts.d32 = dwc_otg_read_common_intr(core_if); - - if (gintsts.b.modemismatch) { - retval |= dwc_otg_handle_mode_mismatch_intr(core_if); - } - if (gintsts.b.otgintr) { - retval |= dwc_otg_handle_otg_intr(core_if); - } - if (gintsts.b.conidstschng) { - retval |= dwc_otg_handle_conn_id_status_change_intr(core_if); - } - if (gintsts.b.disconnect) { - retval |= dwc_otg_handle_disconnect_intr(core_if); - } - if (gintsts.b.sessreqintr) { - retval |= dwc_otg_handle_session_req_intr(core_if); - } - if (gintsts.b.wkupintr) { - retval |= dwc_otg_handle_wakeup_detected_intr(core_if); - } - if (gintsts.b.usbsuspend) { - retval |= dwc_otg_handle_usb_suspend_intr(core_if); - } - if (gintsts.b.portintr && dwc_otg_is_device_mode(core_if)) { - /* The port interrupt occurs while in device mode with HPRT0 - * Port Enable/Disable. - */ - gintsts.d32 = 0; - gintsts.b.portintr = 1; - dwc_write_reg32(&core_if->core_global_regs->gintsts, - gintsts.d32); - retval |= 1; - - } - - S3C2410X_CLEAR_EINTPEND(); - - return retval; -} |