mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5f712b2b73
This fixes a memory corruption when ASoC devices are used in
full-duplex mode. Specifically for pxa-ssp code, where this pointer
is dynamically allocated for each direction and destroyed upon each
stream start.
All other platforms are fixed blindly, I couldn't even compile-test
them. Sorry for any breakage I may have caused.
[Note that this is a backported version for 2.6.34.
Upstream commit is fd23b7dee]
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Reported-by: Michael Hirsch <m.hirsch@raumfeld.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
303 lines
7.5 KiB
C
303 lines
7.5 KiB
C
/*
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* linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
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*
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* Author: Nicolas Pitre
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* Created: Dec 02, 2004
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* Copyright: MontaVista Software Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/ac97_codec.h>
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#include <sound/soc.h>
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#include <sound/pxa2xx-lib.h>
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#include <mach/hardware.h>
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#include <mach/regs-ac97.h>
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#include <mach/dma.h>
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#include <mach/audio.h>
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#include "pxa2xx-pcm.h"
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#include "pxa2xx-ac97.h"
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static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
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{
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pxa2xx_ac97_try_warm_reset(ac97);
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pxa2xx_ac97_finish_reset(ac97);
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}
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static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
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{
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pxa2xx_ac97_try_cold_reset(ac97);
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pxa2xx_ac97_finish_reset(ac97);
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}
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struct snd_ac97_bus_ops soc_ac97_ops = {
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.read = pxa2xx_ac97_read,
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.write = pxa2xx_ac97_write,
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.warm_reset = pxa2xx_ac97_warm_reset,
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.reset = pxa2xx_ac97_cold_reset,
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};
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static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
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.name = "AC97 PCM Stereo out",
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.dev_addr = __PREG(PCDR),
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.drcmr = &DRCMR(12),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST32 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
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.name = "AC97 PCM Stereo in",
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.dev_addr = __PREG(PCDR),
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.drcmr = &DRCMR(11),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST32 | DCMD_WIDTH4,
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};
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static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
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.name = "AC97 Aux PCM (Slot 5) Mono out",
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.dev_addr = __PREG(MODR),
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.drcmr = &DRCMR(10),
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
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.name = "AC97 Aux PCM (Slot 5) Mono in",
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.dev_addr = __PREG(MODR),
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.drcmr = &DRCMR(9),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
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.name = "AC97 Mic PCM (Slot 6) Mono in",
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.dev_addr = __PREG(MCDR),
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.drcmr = &DRCMR(8),
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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#ifdef CONFIG_PM
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static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
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{
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return pxa2xx_ac97_hw_suspend();
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}
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static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
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{
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return pxa2xx_ac97_hw_resume();
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}
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#else
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#define pxa2xx_ac97_suspend NULL
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#define pxa2xx_ac97_resume NULL
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#endif
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static int pxa2xx_ac97_probe(struct platform_device *pdev,
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struct snd_soc_dai *dai)
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{
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return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
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}
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static void pxa2xx_ac97_remove(struct platform_device *pdev,
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struct snd_soc_dai *dai)
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{
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pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
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}
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static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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struct pxa2xx_pcm_dma_params *dma_data;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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dma_data = &pxa2xx_ac97_pcm_stereo_out;
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else
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dma_data = &pxa2xx_ac97_pcm_stereo_in;
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
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return 0;
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}
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static int pxa2xx_ac97_hw_aux_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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struct pxa2xx_pcm_dma_params *dma_data;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
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else
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dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
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return 0;
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}
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static int pxa2xx_ac97_hw_mic_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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return -ENODEV;
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else
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snd_soc_dai_set_dma_data(cpu_dai, substream,
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&pxa2xx_ac97_pcm_mic_mono_in);
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return 0;
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}
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#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000)
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static struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
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.hw_params = pxa2xx_ac97_hw_params,
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};
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static struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
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.hw_params = pxa2xx_ac97_hw_aux_params,
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};
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static struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
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.hw_params = pxa2xx_ac97_hw_mic_params,
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};
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/*
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* There is only 1 physical AC97 interface for pxa2xx, but it
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* has extra fifo's that can be used for aux DACs and ADCs.
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*/
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struct snd_soc_dai pxa_ac97_dai[] = {
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{
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.name = "pxa2xx-ac97",
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.id = 0,
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.ac97_control = 1,
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.probe = pxa2xx_ac97_probe,
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.remove = pxa2xx_ac97_remove,
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.suspend = pxa2xx_ac97_suspend,
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.resume = pxa2xx_ac97_resume,
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.playback = {
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.stream_name = "AC97 Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.capture = {
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.stream_name = "AC97 Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &pxa_ac97_hifi_dai_ops,
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},
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{
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.name = "pxa2xx-ac97-aux",
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.id = 1,
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.ac97_control = 1,
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.playback = {
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.stream_name = "AC97 Aux Playback",
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.channels_min = 1,
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.channels_max = 1,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.capture = {
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.stream_name = "AC97 Aux Capture",
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.channels_min = 1,
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.channels_max = 1,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &pxa_ac97_aux_dai_ops,
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},
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{
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.name = "pxa2xx-ac97-mic",
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.id = 2,
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.ac97_control = 1,
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.capture = {
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.stream_name = "AC97 Mic Capture",
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.channels_min = 1,
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.channels_max = 1,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &pxa_ac97_mic_dai_ops,
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},
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};
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EXPORT_SYMBOL_GPL(pxa_ac97_dai);
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EXPORT_SYMBOL_GPL(soc_ac97_ops);
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static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev)
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{
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int i;
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pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data;
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if (pdev->id >= 0) {
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dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
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return -ENXIO;
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}
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for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++) {
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pxa_ac97_dai[i].dev = &pdev->dev;
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if (pdata && pdata->codec_pdata[0])
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pxa_ac97_dai[i].ac97_pdata = pdata->codec_pdata[0];
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}
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/* Punt most of the init to the SoC probe; we may need the machine
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* driver to do interesting things with the clocking to get us up
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* and running.
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*/
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return snd_soc_register_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
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}
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static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_dais(pxa_ac97_dai, ARRAY_SIZE(pxa_ac97_dai));
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return 0;
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}
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static struct platform_driver pxa2xx_ac97_driver = {
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.probe = pxa2xx_ac97_dev_probe,
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.remove = __devexit_p(pxa2xx_ac97_dev_remove),
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.driver = {
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.name = "pxa2xx-ac97",
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.owner = THIS_MODULE,
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},
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};
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static int __init pxa_ac97_init(void)
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{
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return platform_driver_register(&pxa2xx_ac97_driver);
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}
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module_init(pxa_ac97_init);
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static void __exit pxa_ac97_exit(void)
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{
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platform_driver_unregister(&pxa2xx_ac97_driver);
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}
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module_exit(pxa_ac97_exit);
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MODULE_AUTHOR("Nicolas Pitre");
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MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
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MODULE_LICENSE("GPL");
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