/* sound/soc/samsung/s3c-i2s-v2.h * * ALSA Soc Audio Layer - S3C_I2SV2 I2S driver * * Copyright (c) 2007 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ /* This code is the core support for the I2S block found in a number of * Samsung SoC devices which is unofficially named I2S-V2. Currently the * S3C2412 and the S3C64XX series use this block to provide 1 or 2 I2S * channels via configurable GPIO. */ #ifndef __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H #define __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H __FILE__ #define S3C_I2SV2_DIV_BCLK (1) #define S3C_I2SV2_DIV_RCLK (2) #define S3C_I2SV2_DIV_PRESCALER (3) #define S3C_I2SV2_CLKSRC_PCLK 0 #define S3C_I2SV2_CLKSRC_AUDIOBUS 1 #define S3C_I2SV2_CLKSRC_CDCLK 2 /* Set this flag for I2S controllers that have the bit IISMOD[12] * bridge/break RCLK signal and external Xi2sCDCLK pin. */ #define S3C_FEATURE_CDCLKCON (1 << 0) /** * struct s3c_i2sv2_info - S3C I2S-V2 information * @dev: The parent device passed to use from the probe. * @regs: The pointer to the device registe block. * @feature: Set of bit-flags indicating features of the controller. * @master: True if the I2S core is the I2S bit clock master. * @dma_playback: DMA information for playback channel. * @dma_capture: DMA information for capture channel. * @suspend_iismod: PM save for the IISMOD register. * @suspend_iiscon: PM save for the IISCON register. * @suspend_iispsr: PM save for the IISPSR register. * * This is the private codec state for the hardware associated with an * I2S channel such as the register mappings and clock sources. */ struct s3c_i2sv2_info { struct device *dev; void __iomem *regs; u32 feature; struct clk *iis_pclk; struct clk *iis_cclk; unsigned char master; struct snd_dmaengine_dai_dma_data *dma_playback; struct snd_dmaengine_dai_dma_data *dma_capture; u32 suspend_iismod; u32 suspend_iiscon; u32 suspend_iispsr; unsigned long base; }; extern struct clk *s3c_i2sv2_get_clock(struct snd_soc_dai *cpu_dai); struct s3c_i2sv2_rate_calc { unsigned int clk_div; /* for prescaler */ unsigned int fs_div; /* for root frame clock */ }; extern int s3c_i2sv2_iis_calc_rate(struct s3c_i2sv2_rate_calc *info, unsigned int *fstab, unsigned int rate, struct clk *clk); /** * s3c_i2sv2_probe - probe for i2s device helper * @dai: The ASoC DAI structure supplied to the original probe. * @i2s: Our local i2s structure to fill in. * @base: The base address for the registers. */ extern int s3c_i2sv2_probe(struct snd_soc_dai *dai, struct s3c_i2sv2_info *i2s, unsigned long base); /** * s3c_i2sv2_register_component - register component and dai with soc core * @dev: DAI device * @id: DAI ID * @drv: The driver structure to register * * Fill in any missing fields and then register the given dai with the * soc core. */ extern int s3c_i2sv2_register_component(struct device *dev, int id, const struct snd_soc_component_driver *cmp_drv, struct snd_soc_dai_driver *dai_drv); #endif /* __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H */ 1f98194e4f6b6cae7'>azt3328.h
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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-30 19:27:10 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-31 09:13:49 -0500
commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)
tree370efda701f03cccf21e02bb1fdd3b852547d75c /sound/pci/azt3328.h
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'sound/pci/azt3328.h')