/* * digi00x-transaction.c - a part of driver for Digidesign Digi 002/003 family * * Copyright (c) 2014-2015 Takashi Sakamoto * * Licensed under the terms of the GNU General Public License, version 2. */ #include #include "digi00x.h" static int fill_midi_message(struct snd_rawmidi_substream *substream, u8 *buf) { int bytes; buf[0] = 0x80; bytes = snd_rawmidi_transmit_peek(substream, buf + 1, 2); if (bytes >= 0) buf[3] = 0xc0 | bytes; return bytes; } static void handle_midi_control(struct snd_dg00x *dg00x, __be32 *buf, unsigned int length) { struct snd_rawmidi_substream *substream; unsigned int i; unsigned int len; u8 *b; substream = ACCESS_ONCE(dg00x->in_control); if (substream == NULL) return; length /= 4; for (i = 0; i < length; i++) { b = (u8 *)&buf[i]; len = b[3] & 0xf; if (len > 0) snd_rawmidi_receive(dg00x->in_control, b + 1, len); } } static void handle_unknown_message(struct snd_dg00x *dg00x, unsigned long long offset, __be32 *buf) { unsigned long flags; spin_lock_irqsave(&dg00x->lock, flags); dg00x->msg = be32_to_cpu(*buf); spin_unlock_irqrestore(&dg00x->lock, flags); wake_up(&dg00x->hwdep_wait); } static void handle_message(struct fw_card *card, struct fw_request *request, int tcode, int destination, int source, int generation, unsigned long long offset, void *data, size_t length, void *callback_data) { struct snd_dg00x *dg00x = callback_data; __be32 *buf = (__be32 *)data; if (offset == dg00x->async_handler.offset) handle_unknown_message(dg00x, offset, buf); else if (offset == dg00x->async_handler.offset + 4) handle_midi_control(dg00x, buf, length); fw_send_response(card, request, RCODE_COMPLETE); } int snd_dg00x_transaction_reregister(struct snd_dg00x *dg00x) { struct fw_device *device = fw_parent_device(dg00x->unit); __be32 data[2]; int err; /* Unknown. 4bytes. */ data[0] = cpu_to_be32((device->card->node_id << 16) | (dg00x->async_handler.offset >> 32)); data[1] = cpu_to_be32(dg00x->async_handler.offset); err = snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST, DG00X_ADDR_BASE + DG00X_OFFSET_MESSAGE_ADDR, &data, sizeof(data), 0); if (err < 0) return err; /* Asynchronous transactions for MIDI control message. */ data[0] = cpu_to_be32((device->card->node_id << 16) | (dg00x->async_handler.offset >> 32)); data[1] = cpu_to_be32(dg00x->async_handler.offset + 4); return snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST, DG00X_ADDR_BASE + DG00X_OFFSET_MIDI_CTL_ADDR, &data, sizeof(data), 0); } int snd_dg00x_transaction_register(struct snd_dg00x *dg00x) { static const struct fw_address_region resp_register_region = { .start = 0xffffe0000000ull, .end = 0xffffe000ffffull, }; int err; dg00x->async_handler.length = 12; dg00x->async_handler.address_callback = handle_message; dg00x->async_handler.callback_data = dg00x; err = fw_core_add_address_handler(&dg00x->async_handler, &resp_register_region); if (err < 0) return err; err = snd_dg00x_transaction_reregister(dg00x); if (err < 0) goto error; err = snd_fw_async_midi_port_init(&dg00x->out_control, dg00x->unit, DG00X_ADDR_BASE + DG00X_OFFSET_MMC, 4, fill_midi_message); if (err < 0) goto error; return err; error: fw_core_remove_address_handler(&dg00x->async_handler); dg00x->async_handler.callback_data = NULL; return err; } void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x) { if (dg00x->async_handler.callback_data == NULL) return; snd_fw_async_midi_port_destroy(&dg00x->out_control); fw_core_remove_address_handler(&dg00x->async_handler); dg00x->async_handler.callback_data = NULL; } context' onchange='this.form.submit();'>space:mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-18 11:13:41 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-18 11:13:41 -0800
commitca92e6c7e6329029d7188487a5c32e86ef471977 (patch)
tree704fb5c2ca533cdb569826522eed0dbbcf31f316 /sound/pci/asihpi
parent0b75f821ec8be459dd4dec77be39595d989d77ac (diff)
parent4205e4786d0b9fc3b4fec7b1910cf645a0468307 (diff)
Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP hotplug update from Thomas Gleixner: "This contains a trivial typo fix and an extension to the core code for dynamically allocating states in the prepare stage. The extension is necessary right now because we need a proper way to unbreak LTTNG, which iscurrently non functional due to the removal of the notifiers. Surely it's out of tree, but it's widely used by distros. The simple solution would have been to reserve a state for LTTNG, but I'm not fond about unused crap in the kernel and the dynamic range, which we admittedly should have done right away, allows us to remove quite some of the hardcoded states, i.e. those which have no ordering requirements. So doing the right thing now is better than having an smaller intermediate solution which needs to be reworked anyway" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Provide dynamic range for prepare stage perf/x86/amd/ibs: Fix typo after cleanup state names in cpu/hotplug
Diffstat (limited to 'sound/pci/asihpi')