/* * PC-Speaker driver for Linux * * Copyright (C) 1993-1997 Michael Beck * Copyright (C) 1997-2001 David Woodhouse * Copyright (C) 2001-2008 Stas Sergeev */ #ifndef __PCSP_H__ #define __PCSP_H__ #include #include #include #define PCSP_SOUND_VERSION 0x400 /* read 4.00 */ #define PCSP_DEBUG 0 /* default timer freq for PC-Speaker: 18643 Hz */ #define DIV_18KHZ 64 #define MAX_DIV DIV_18KHZ #define CALC_DIV(d) (MAX_DIV >> (d)) #define CUR_DIV() CALC_DIV(chip->treble) #define PCSP_MAX_TREBLE 1 /* unfortunately, with hrtimers 37KHz does not work very well :( */ #define PCSP_DEFAULT_TREBLE 0 #define MIN_DIV (MAX_DIV >> PCSP_MAX_TREBLE) /* wild guess */ #define PCSP_MIN_LPJ 1000000 #define PCSP_DEFAULT_SDIV (DIV_18KHZ >> 1) #define PCSP_DEFAULT_SRATE (PIT_TICK_RATE / PCSP_DEFAULT_SDIV) #define PCSP_INDEX_INC() (1 << (PCSP_MAX_TREBLE - chip->treble)) #define PCSP_CALC_RATE(i) (PIT_TICK_RATE / CALC_DIV(i)) #define PCSP_RATE() PCSP_CALC_RATE(chip->treble) #define PCSP_MIN_RATE__1 MAX_DIV/PIT_TICK_RATE #define PCSP_MAX_RATE__1 MIN_DIV/PIT_TICK_RATE #define PCSP_MAX_PERIOD_NS (1000000000ULL * PCSP_MIN_RATE__1) #define PCSP_MIN_PERIOD_NS (1000000000ULL * PCSP_MAX_RATE__1) #define PCSP_CALC_NS(div) ({ \ u64 __val = 1000000000ULL * (div); \ do_div(__val, PIT_TICK_RATE); \ __val; \ }) #define PCSP_PERIOD_NS() PCSP_CALC_NS(CUR_DIV()) #define PCSP_MAX_PERIOD_SIZE (64*1024) #define PCSP_MAX_PERIODS 512 #define PCSP_BUFFER_SIZE (128*1024) struct snd_pcsp { struct snd_card *card; struct snd_pcm *pcm; struct input_dev *input_dev; struct hrtimer timer; unsigned short port, irq, dma; spinlock_t substream_lock; struct snd_pcm_substream *playback_substream; unsigned int fmt_size; unsigned int is_signed; size_t playback_ptr; size_t period_ptr; atomic_t timer_active; int thalf; u64 ns_rem; unsigned char val61; int enable; int max_treble; int treble; int pcspkr; }; extern struct snd_pcsp pcsp_chip; extern enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle); extern void pcsp_sync_stop(struct snd_pcsp *chip); extern int snd_pcsp_new_pcm(struct snd_pcsp *chip); extern int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm); #endif ='id' value='4d191b1b63c209e37bf27938ef365244d3c41084'/>
path: root/sound/oss/ulaw.h
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authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 14:21:56 +0000
committerBjorn Helgaas <bhelgaas@google.com>2017-01-17 08:41:51 -0600
commit4d191b1b63c209e37bf27938ef365244d3c41084 (patch)
treef2ab6cdb65ddacdf2e7c019cd55e353f0c16b400 /sound/oss/ulaw.h
parent51ebfc92b72b4f7dac1ab45683bf56741e454b8c (diff)
PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling
The conversion to the new hotplug state machine introduced a regression where a successful hotplug registration would be treated as an error, effectively disabling the MSI driver forever. Fix it by doing the proper check on the return value. Fixes: 9c248f8896e6 ("PCI/xgene-msi: Convert to hotplug state machine") Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Tested-by: Duc Dang <dhdang@apm.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: stable@vger.kernel.org
Diffstat (limited to 'sound/oss/ulaw.h')