/* * tascam.h - a part of driver for TASCAM FireWire series * * Copyright (c) 2015 Takashi Sakamoto * * Licensed under the terms of the GNU General Public License, version 2. */ #ifndef SOUND_TASCAM_H_INCLUDED #define SOUND_TASCAM_H_INCLUDED #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../lib.h" #include "../amdtp-stream.h" #include "../iso-resources.h" struct snd_tscm_spec { const char *const name; bool has_adat; bool has_spdif; unsigned int pcm_capture_analog_channels; unsigned int pcm_playback_analog_channels; unsigned int midi_capture_ports; unsigned int midi_playback_ports; }; #define TSCM_MIDI_IN_PORT_MAX 4 #define TSCM_MIDI_OUT_PORT_MAX 4 struct snd_tscm { struct snd_card *card; struct fw_unit *unit; struct mutex mutex; spinlock_t lock; bool registered; struct delayed_work dwork; const struct snd_tscm_spec *spec; struct fw_iso_resources tx_resources; struct fw_iso_resources rx_resources; struct amdtp_stream tx_stream; struct amdtp_stream rx_stream; unsigned int substreams_counter; int dev_lock_count; bool dev_lock_changed; wait_queue_head_t hwdep_wait; /* For MIDI message incoming transactions. */ struct fw_address_handler async_handler; struct snd_rawmidi_substream *tx_midi_substreams[TSCM_MIDI_IN_PORT_MAX]; /* For MIDI message outgoing transactions. */ struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX]; u8 running_status[TSCM_MIDI_OUT_PORT_MAX]; bool on_sysex[TSCM_MIDI_OUT_PORT_MAX]; }; #define TSCM_ADDR_BASE 0xffff00000000ull #define TSCM_OFFSET_FIRMWARE_REGISTER 0x0000 #define TSCM_OFFSET_FIRMWARE_FPGA 0x0004 #define TSCM_OFFSET_FIRMWARE_ARM 0x0008 #define TSCM_OFFSET_FIRMWARE_HW 0x000c #define TSCM_OFFSET_ISOC_TX_CH 0x0200 #define TSCM_OFFSET_UNKNOWN 0x0204 #define TSCM_OFFSET_START_STREAMING 0x0208 #define TSCM_OFFSET_ISOC_RX_CH 0x020c #define TSCM_OFFSET_ISOC_RX_ON 0x0210 /* Little conviction. */ #define TSCM_OFFSET_TX_PCM_CHANNELS 0x0214 #define TSCM_OFFSET_RX_PCM_CHANNELS 0x0218 #define TSCM_OFFSET_MULTIPLEX_MODE 0x021c #define TSCM_OFFSET_ISOC_TX_ON 0x0220 /* Unknown 0x0224 */ #define TSCM_OFFSET_CLOCK_STATUS 0x0228 #define TSCM_OFFSET_SET_OPTION 0x022c #define TSCM_OFFSET_MIDI_TX_ON 0x0300 #define TSCM_OFFSET_MIDI_TX_ADDR_HI 0x0304 #define TSCM_OFFSET_MIDI_TX_ADDR_LO 0x0308 #define TSCM_OFFSET_LED_POWER 0x0404 #define TSCM_OFFSET_MIDI_RX_QUAD 0x4000 enum snd_tscm_clock { SND_TSCM_CLOCK_INTERNAL = 0, SND_TSCM_CLOCK_WORD = 1, SND_TSCM_CLOCK_SPDIF = 2, SND_TSCM_CLOCK_ADAT = 3, }; int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit, enum amdtp_stream_direction dir, unsigned int pcm_channels); int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate); int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s, struct snd_pcm_runtime *runtime); void amdtp_tscm_set_pcm_format(struct amdtp_stream *s, snd_pcm_format_t format); int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate); int snd_tscm_stream_get_clock(struct snd_tscm *tscm, enum snd_tscm_clock *clock); int snd_tscm_stream_init_duplex(struct snd_tscm *tscm); void snd_tscm_stream_update_duplex(struct snd_tscm *tscm); void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm); int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate); void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm); void snd_tscm_stream_lock_changed(struct snd_tscm *tscm); int snd_tscm_stream_lock_try(struct snd_tscm *tscm); void snd_tscm_stream_lock_release(struct snd_tscm *tscm); int snd_tscm_transaction_register(struct snd_tscm *tscm); int snd_tscm_transaction_reregister(struct snd_tscm *tscm); void snd_tscm_transaction_unregister(struct snd_tscm *tscm); void snd_tscm_proc_init(struct snd_tscm *tscm); int snd_tscm_create_pcm_devices(struct snd_tscm *tscm); int snd_tscm_create_midi_devices(struct snd_tscm *tscm); int snd_tscm_create_hwdep_device(struct snd_tscm *tscm); #endif ion value='0' selected='selected'>includemode:
authorJoonyoung Shim <jy0922.shim@samsung.com>2017-01-17 13:54:36 +0900
committerThomas Gleixner <tglx@linutronix.de>2017-01-17 10:08:38 +0100
commitbc7c36eedb0c7004aa06c2afc3c5385adada8fa3 (patch)
tree14ce1ae3cce8013aa4bc46297f6370ec0527be78 /drivers/usb/host
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
clocksource/exynos_mct: Clear interrupt when cpu is shut down
When a CPU goes offline a potentially pending timer interrupt is not cleared. When the CPU comes online again then the pending interrupt is delivered before the per cpu clockevent device is initialized. As a consequence the tick interrupt handler dereferences a NULL pointer. [ 51.251378] Unable to handle kernel NULL pointer dereference at virtual address 00000040 [ 51.289348] task: ee942d00 task.stack: ee960000 [ 51.293861] PC is at tick_periodic+0x38/0xb0 [ 51.298102] LR is at tick_handle_periodic+0x1c/0x90 Clear the pending interrupt in the cpu dying path. Fixes: 56a94f13919c ("clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier") Reported-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Cc: linux-samsung-soc@vger.kernel.org Cc: cw00.choi@samsung.com Cc: daniel.lezcano@linaro.org Cc: stable@vger.kernel.org Cc: javier@osg.samsung.com Cc: kgene@kernel.org Cc: krzk@kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1484628876-22065-1-git-send-email-jy0922.shim@samsung.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/usb/host')