^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * c67x00-hcd.c: Cypress C67X00 USB Host Controller Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2006-2008 Barco N.V.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Derived from the Cypress cy7c67200/300 ezusb linux driver and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * based on multiple host controller drivers inside the linux kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "c67x00.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "c67x00-hcd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* --------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Root Hub Support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static __u8 c67x00_hub_des[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 0x09, /* __u8 bLength; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) USB_DT_HUB, /* __u8 bDescriptorType; Hub-descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 0x02, /* __u8 bNbrPorts; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 0x00, /* __u16 wHubCharacteristics; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 0x00, /* (per-port OC, no power switching) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 0x32, /* __u8 bPwrOn2pwrGood; 2ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 0x00, /* __u8 bHubContrCurrent; 0 mA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 0x00, /* __u8 DeviceRemovable; ** 7 Ports max ** */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 0xff, /* __u8 PortPwrCtrlMask; ** 7 ports max ** */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static void c67x00_hub_reset_host_port(struct c67x00_sie *sie, int port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct c67x00_hcd *c67x00 = sie->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) c67x00_ll_husb_reset(sie, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) spin_lock_irqsave(&c67x00->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) c67x00_ll_husb_reset_port(sie, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) spin_unlock_irqrestore(&c67x00->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) c67x00_ll_set_husb_eot(sie->dev, DEFAULT_EOT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int c67x00_hub_status_data(struct usb_hcd *hcd, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct c67x00_sie *sie = c67x00->sie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u16 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) *buf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) status = c67x00_ll_usb_get_status(sie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) for (i = 0; i < C67X00_PORTS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (status & PORT_CONNECT_CHANGE(i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) *buf |= (1 << i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* bit 0 denotes hub change, b1..n port change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *buf <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return !!*buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int c67x00_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u16 wIndex, char *buf, u16 wLength)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct c67x00_sie *sie = c67x00->sie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u16 status, usb_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) unsigned int port = wIndex-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u16 wPortChange, wPortStatus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) switch (typeReq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) case GetHubStatus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *(__le32 *) buf = cpu_to_le32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) len = 4; /* hub power */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) case GetPortStatus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (wIndex > C67X00_PORTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) status = c67x00_ll_usb_get_status(sie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) usb_status = c67x00_ll_get_usb_ctl(sie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) wPortChange = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (status & PORT_CONNECT_CHANGE(port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) wPortChange |= USB_PORT_STAT_C_CONNECTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) wPortStatus = USB_PORT_STAT_POWER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (!(status & PORT_SE0_STATUS(port)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) wPortStatus |= USB_PORT_STAT_CONNECTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (usb_status & LOW_SPEED_PORT(port)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) wPortStatus |= USB_PORT_STAT_LOW_SPEED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) c67x00->low_speed_ports |= (1 << port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) c67x00->low_speed_ports &= ~(1 << port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (usb_status & SOF_EOP_EN(port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) wPortStatus |= USB_PORT_STAT_ENABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) *(__le16 *) buf = cpu_to_le16(wPortStatus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) *(__le16 *) (buf + 2) = cpu_to_le16(wPortChange);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) len = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) case SetHubFeature: /* We don't implement these */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) case ClearHubFeature:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) switch (wValue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) case C_HUB_OVER_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) case C_HUB_LOCAL_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case SetPortFeature:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (wIndex > C67X00_PORTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) switch (wValue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) case USB_PORT_FEAT_SUSPEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) "SetPortFeature %d (SUSPEND)\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) case USB_PORT_FEAT_RESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) c67x00_hub_reset_host_port(sie, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) case USB_PORT_FEAT_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* Power always enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) "%s: SetPortFeature %d (0x%04x) Error!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) __func__, port, wValue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) case ClearPortFeature:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (wIndex > C67X00_PORTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) switch (wValue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) case USB_PORT_FEAT_ENABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* Reset the port so that the c67x00 also notices the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * disconnect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) c67x00_hub_reset_host_port(sie, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) case USB_PORT_FEAT_C_ENABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) "ClearPortFeature (%d): C_ENABLE\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) case USB_PORT_FEAT_SUSPEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) "ClearPortFeature (%d): SUSPEND\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) case USB_PORT_FEAT_C_SUSPEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) "ClearPortFeature (%d): C_SUSPEND\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) case USB_PORT_FEAT_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) "ClearPortFeature (%d): POWER\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) case USB_PORT_FEAT_C_CONNECTION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) c67x00_ll_usb_clear_status(sie,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) PORT_CONNECT_CHANGE(port));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) case USB_PORT_FEAT_C_OVER_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) "ClearPortFeature (%d): OVER_CURRENT\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) case USB_PORT_FEAT_C_RESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) "ClearPortFeature (%d): C_RESET\n", port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) dev_dbg(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) "%s: ClearPortFeature %d (0x%04x) Error!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) __func__, port, wValue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) case GetHubDescriptor:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) len = min_t(unsigned int, sizeof(c67x00_hub_des), wLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) memcpy(buf, c67x00_hub_des, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) dev_dbg(c67x00_hcd_dev(c67x00), "%s: unknown\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /* ---------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * Main part of host controller driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * c67x00_hcd_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * This function is called from the interrupt handler in c67x00-drv.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void c67x00_hcd_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct c67x00_hcd *c67x00 = sie->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /* Handle sie message flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (msg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (msg & HUSB_TDListDone)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) c67x00_sched_kick(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) dev_warn(c67x00_hcd_dev(c67x00),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) "Unknown SIE msg flag(s): 0x%04x\n", msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (unlikely(hcd->state == HC_STATE_HALT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (!HCD_HW_ACCESSIBLE(hcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /* Handle Start of frame events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (int_status & SOFEOP_FLG(sie->sie_num)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) c67x00_ll_usb_clear_status(sie, SOF_EOP_IRQ_FLG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) c67x00_sched_kick(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * c67x00_hcd_start: Host controller start hook
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static int c67x00_hcd_start(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) hcd->uses_new_polling = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) hcd->state = HC_STATE_RUNNING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * c67x00_hcd_stop: Host controller stop hook
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) static void c67x00_hcd_stop(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /* Nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static int c67x00_hcd_get_frame(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) u16 temp_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) dev_dbg(c67x00_hcd_dev(c67x00), "%s\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) temp_val = c67x00_ll_husb_get_frame(c67x00->sie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) temp_val &= HOST_FRAME_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return temp_val ? (temp_val - 1) : HOST_FRAME_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static const struct hc_driver c67x00_hc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) .description = "c67x00-hcd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) .product_desc = "Cypress C67X00 Host Controller",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) .hcd_priv_size = sizeof(struct c67x00_hcd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) .flags = HCD_USB11 | HCD_MEMORY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * basic lifecycle operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) .start = c67x00_hcd_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) .stop = c67x00_hcd_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * managing i/o requests and associated device resources
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .urb_enqueue = c67x00_urb_enqueue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) .urb_dequeue = c67x00_urb_dequeue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .endpoint_disable = c67x00_endpoint_disable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * scheduling support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) .get_frame_number = c67x00_hcd_get_frame,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * root hub support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) .hub_status_data = c67x00_hub_status_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) .hub_control = c67x00_hub_control,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /* ---------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * Setup/Teardown routines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) int c67x00_hcd_probe(struct c67x00_sie *sie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct c67x00_hcd *c67x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct usb_hcd *hcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (usb_disabled())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) hcd = usb_create_hcd(&c67x00_hc_driver, sie_dev(sie), "c67x00_sie");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (!hcd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) goto err0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) c67x00 = hcd_to_c67x00_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) spin_lock_init(&c67x00->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) c67x00->sie = sie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) INIT_LIST_HEAD(&c67x00->list[PIPE_ISOCHRONOUS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) INIT_LIST_HEAD(&c67x00->list[PIPE_INTERRUPT]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) INIT_LIST_HEAD(&c67x00->list[PIPE_CONTROL]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) INIT_LIST_HEAD(&c67x00->list[PIPE_BULK]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) c67x00->urb_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) INIT_LIST_HEAD(&c67x00->td_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) c67x00->td_base_addr = CY_HCD_BUF_ADDR + SIE_TD_OFFSET(sie->sie_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) c67x00->buf_base_addr = CY_HCD_BUF_ADDR + SIE_BUF_OFFSET(sie->sie_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) c67x00->max_frame_bw = MAX_FRAME_BW_STD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) c67x00_ll_husb_init_host_port(sie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) init_completion(&c67x00->endpoint_disable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) retval = c67x00_sched_start_scheduler(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) retval = usb_add_hcd(hcd, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) dev_dbg(sie_dev(sie), "%s: usb_add_hcd returned %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) device_wakeup_enable(hcd->self.controller);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) spin_lock_irqsave(&sie->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) sie->private_data = c67x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) sie->irq = c67x00_hcd_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) spin_unlock_irqrestore(&sie->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) c67x00_sched_stop_scheduler(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) usb_put_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) err0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /* may be called with controller, bus, and devices active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) void c67x00_hcd_remove(struct c67x00_sie *sie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct c67x00_hcd *c67x00 = sie->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) c67x00_sched_stop_scheduler(c67x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) usb_remove_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) usb_put_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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