/* * CAIF USB handler * Copyright (C) ST-Ericsson AB 2011 * Author: Sjur Brendeland * License terms: GNU General Public License (GPL) version 2 * */ #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__ #include #include #include #include #include #include #include #include #include #include #include #include MODULE_LICENSE("GPL"); #define CFUSB_PAD_DESCR_SZ 1 /* Alignment descriptor length */ #define CFUSB_ALIGNMENT 4 /* Number of bytes to align. */ #define CFUSB_MAX_HEADLEN (CFUSB_PAD_DESCR_SZ + CFUSB_ALIGNMENT-1) #define STE_USB_VID 0x04cc /* USB Product ID for ST-Ericsson */ #define STE_USB_PID_CAIF 0x230f /* Product id for CAIF Modems */ struct cfusbl { struct cflayer layer; u8 tx_eth_hdr[ETH_HLEN]; }; static bool pack_added; static int cfusbl_receive(struct cflayer *layr, struct cfpkt *pkt) { u8 hpad; /* Remove padding. */ cfpkt_extr_head(pkt, &hpad, 1); cfpkt_extr_head(pkt, NULL, hpad); return layr->up->receive(layr->up, pkt); } static int cfusbl_transmit(struct cflayer *layr, struct cfpkt *pkt) { struct caif_payload_info *info; u8 hpad; u8 zeros[CFUSB_ALIGNMENT]; struct sk_buff *skb; struct cfusbl *usbl = container_of(layr, struct cfusbl, layer); skb = cfpkt_tonative(pkt); skb_reset_network_header(skb); skb->protocol = htons(ETH_P_IP); info = cfpkt_info(pkt); hpad = (info->hdr_len + CFUSB_PAD_DESCR_SZ) & (CFUSB_ALIGNMENT - 1); if (skb_headroom(skb) < ETH_HLEN + CFUSB_PAD_DESCR_SZ + hpad) { pr_warn("Headroom to small\n"); kfree_skb(skb); return -EIO; } memset(zeros, 0, hpad); cfpkt_add_head(pkt, zeros, hpad); cfpkt_add_head(pkt, &hpad, 1); cfpkt_add_head(pkt, usbl->tx_eth_hdr, sizeof(usbl->tx_eth_hdr)); return layr->dn->transmit(layr->dn, pkt); } static void cfusbl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, int phyid) { if (layr->up && layr->up->ctrlcmd) layr->up->ctrlcmd(layr->up, ctrl, layr->id); } static struct cflayer *cfusbl_create(int phyid, u8 ethaddr[ETH_ALEN], u8 braddr[ETH_ALEN]) { struct cfusbl *this = kmalloc(sizeof(struct cfusbl), GFP_ATOMIC); if (!this) return NULL; caif_assert(offsetof(struct cfusbl, layer) == 0); memset(&this->layer, 0, sizeof(this->layer)); this->layer.receive = cfusbl_receive; this->layer.transmit = cfusbl_transmit; this->layer.ctrlcmd = cfusbl_ctrlcmd; snprintf(this->layer.name, CAIF_LAYER_NAME_SZ, "usb%d", phyid); this->layer.id = phyid; /* * Construct TX ethernet header: * 0-5 destination address * 5-11 source address * 12-13 protocol type */ ether_addr_copy(&this->tx_eth_hdr[ETH_ALEN], braddr); ether_addr_copy(&this->tx_eth_hdr[ETH_ALEN], ethaddr); this->tx_eth_hdr[12] = cpu_to_be16(ETH_P_802_EX1) & 0xff; this->tx_eth_hdr[13] = (cpu_to_be16(ETH_P_802_EX1) >> 8) & 0xff; pr_debug("caif ethernet TX-header dst:%pM src:%pM type:%02x%02x\n", this->tx_eth_hdr, this->tx_eth_hdr + ETH_ALEN, this->tx_eth_hdr[12], this->tx_eth_hdr[13]); return (struct cflayer *) this; } static struct packet_type caif_usb_type __read_mostly = { .type = cpu_to_be16(ETH_P_802_EX1), }; static int cfusbl_device_notify(struct notifier_block *me, unsigned long what, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct caif_dev_common common; struct cflayer *layer, *link_support; struct usbnet *usbnet; struct usb_device *usbdev; /* Check whether we have a NCM device, and find its VID/PID. */ if (!(dev->dev.parent && dev->dev.parent->driver && strcmp(dev->dev.parent->driver->name, "cdc_ncm") == 0)) return 0; usbnet = netdev_priv(dev); usbdev = usbnet->udev; pr_debug("USB CDC NCM device VID:0x%4x PID:0x%4x\n", le16_to_cpu(usbdev->descriptor.idVendor), le16_to_cpu(usbdev->descriptor.idProduct)); /* Check for VID/PID that supports CAIF */ if (!(le16_to_cpu(usbdev->descriptor.idVendor) == STE_USB_VID && le16_to_cpu(usbdev->descriptor.idProduct) == STE_USB_PID_CAIF)) return 0; if (what == NETDEV_UNREGISTER) module_put(THIS_MODULE); if (what != NETDEV_REGISTER) return 0; __module_get(THIS_MODULE); memset(&common, 0, sizeof(common)); common.use_frag = false; common.use_fcs = false; common.use_stx = false; common.link_select = CAIF_LINK_HIGH_BANDW; common.flowctrl = NULL; link_support = cfusbl_create(dev->ifindex, dev->dev_addr, dev->broadcast); if (!link_support) return -ENOMEM; if (dev->num_tx_queues > 1) pr_warn("USB device uses more than one tx queue\n"); caif_enroll_dev(dev, &common, link_support, CFUSB_MAX_HEADLEN, &layer, &caif_usb_type.func); if (!pack_added) dev_add_pack(&caif_usb_type); pack_added = true; strncpy(layer->name, dev->name, sizeof(layer->name) - 1); layer->name[sizeof(layer->name) - 1] = 0; return 0; } static struct notifier_block caif_device_notifier = { .notifier_call = cfusbl_device_notify, .priority = 0, }; static int __init cfusbl_init(void) { return register_netdevice_notifier(&caif_device_notifier); } static void __exit cfusbl_exit(void) { unregister_netdevice_notifier(&caif_device_notifier); dev_remove_pack(&caif_usb_type); } module_init(cfusbl_init); module_exit(cfusbl_exit); class='oid'>51339e3999cab80cddff812f47ca34997fa589bf /sound/soc parente28ac1fc31299d826b5dbf1d67e74720a95cda48 (diff)parent6cf4569ce3561dec560147e6051959d6896b23d1 (diff)
Merge tag 'sound-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai: "This time we got a few more fixes than the previous rc's, and most of commits were about ASoC. The only significant change in the core side is the regression fix wrt the aux device list handling, and all the rest are driver-specific small / trivial fixes" * tag 'sound-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: usb-audio: Add a quirk for Plantronics BT600 ASoC: rt5645: set sel_i2s_pre_div1 to 2 ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused ASoC: Intel: Skylake: Release FW ctx in cleanup ASoC: Intel: bytcr-rt5640: fix settings in internal clock mode ASoC: fsl_ssi: set fifo watermark to more reliable value ASoC: nau8825: fix invalid configuration in Pre-Scalar of FLL ASoC: nau8825: correct the function name of register ASoC: Intel: Skylake: Fix to fail safely if module not available in path ASoC: tlv320aic3x: Mark the RESET register as volatile ASoC: Fix binding and probing of auxiliary components ASoC: wm_adsp: Don't overrun firmware file buffer when reading region data ASoC: Intel: bytcr_rt5640: fallback mechanism if MCLK is not enabled ASoC: hdmi-codec: use unsigned type to structure members with bit-field ASoC: topology: kfree kcontrol->private_value before freeing kcontrol ASoC: rsnd: don't double free kctrl ASoC: dwc: Fix PIO mode initialization
Diffstat (limited to 'sound/soc')