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path: root/sound/soc/fsl/fsl_ssi.c
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2009-05-27ASoC: Switch FSL SSI DAI over to symmetric_ratesMark Brown1-6/+3
The effect of symmetric_constraints should provide a standard way to enforce the use of the same sample rate for both directions. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Timur Tabi <timur@freescale.com>
2009-05-17sound: use dev_set_drvdataJulia Lawall1-1/+1
Eliminate direct accesses to the driver_data field. cf 82ab13b26f15f49be45f15ccc96bfa0b81dfd015 The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct device *dev; expression E; type T; @@ - dev->driver_data = (T)E + dev_set_drvdata(dev, E) @@ struct device *dev; type T; @@ - (T)dev->driver_data + dev_get_drvdata(dev) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-04-02ASoC: trim SSI sysfs statistics in Freescale MPC8610 sound driversTimur Tabi1-32/+47
Optimize the display of SSI statistics in the Freescale MPC8610 sound driver to display the status count only of the interrupts that were actually enabled. Previously, it would display the counts of all SISR status bits, even those that were not enabled. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-04-02ASoC: remove trigger delay in Freescale MPC8610 sound driverTimur Tabi1-18/+2
Remove the delay from the trigger function in the Freescale MPC8610 sound driver when capture is started. This delay was used to ensure that the DMA controller was active when ALSA call the .pointer function to request a DMA transfer status. A better approach is for the .pointer function to detect that DMA has not started, and return zero instead. This change eliminates the need for the delay. Also add some related code to check for a DMA programming error, and report XRUN if it occurs. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-03-11ASoC: Merge dai_ops factor outMark Brown1-8/+10
Merge Eric Maio's patch to merge snd_soc_dai_ops out of line. Fixed merge issues and updated drivers, plus an issue with the ops for the two s3c2443 AC97 DAIs having been merged. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-03-07ASoC: Improve pause/unpause performance in Freescale 8610 driversTimur Tabi1-9/+14
Add support for true pause and unpause. Without this, mplayer will drop some audio (less than one second, but still noticeable) when pausing playback. Remove support for PM suspend and resume from the trigger function, since the driver doesn't support PM anyway. Optimize the delay after starting capture. Instead of delaying 1ms, the driver now polls the hardware. The new delay is shorter by over 90% yet still effective. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-03-06ASoC: add support for SSI asynchronous mode to the Freescale SSI driversTimur Tabi1-10/+32
Add a new device tree property for the SSI node: "fsl,ssi-asynchronous". If defined, the SSI is programmed into asynchronous mode, otherwise it is programmed into synchronous mode. In asynchronous mode, pin SRCK must be connected to the same clock source as STFS, and pin SRFS must be connected to the same signal as STFS. Asynchronous mode allows playback and capture to use different sample sizes. It also technically allows different sample rates, but the driver does not support that. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-03-05ASoC: make ops a pointer in 'struct snd_soc_dai'Eric Miao1-8/+10
Considering the fact that most cpu_dai or codec_dai are using a same 'snd_soc_dai_ops' for several similar interfaces, 'ops' would be better made a pointer instead, to make sharing easier and code a bit cleaner. The patch below is rather preliminary since the asoc tree is being actively developed, and this touches almost every piece of code, (and possibly many others in development need to be changed as well). Building of all codecs are OK, yet to every SoC, I didn't test that. Signed-off-by: Eric Miao <eric.miao@marvell.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-02-06ASoC: optimize init sequence of Freescale MPC8610 sound driversTimur Tabi1-10/+9
In the Freescale MPC8610 sound drivers, relocate all code from the _prepare functions into the corresponding _hw_params functions. These drivers assumed that the sample size is known in the _prepare function and not in the _hw_params function, but this is not true. Move the code in fsl_dma_prepare() into fsl_dma_hw_param(). Create fsl_ssi_hw_params() and move the code from fsl_ssi_prepare() into it. Turn off snooping for DMA operations to/from I/O registers, since that's not necessary. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-09ASoC: Register platform DAIsMark Brown1-0/+10
Register all platform DAIs with the core. In line with current behaviour this is done at module probe time rather than when the devices are probed (since currently that only happens as the entire ASoC card is registered except for those drivers that currently implement some kind of hotplug). Since the core currently ignores DAI registration this has no practical effect. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-21ASoC: Merge snd_soc_ops into snd_soc_dai_opsMark Brown1-6/+8
Liam Girdwood's ASoC v2 work avoids having two different ops structures for DAIs by merging the members of struct snd_soc_ops into struct snd_soc_dai_ops, allowing per DAI configuration for everything. Backport this change. This paves the way for future work allowing any combination of DAIs to be connected rather than having fixed purpose CODEC and CPU DAIs and only allowing CODEC<->CPU interconnections. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-07-29ALSA: asoc: restrict sample rate and size in Freescale MPC8610 sound driversTimur Tabi1-10/+64
The Freescale MPC8610 SSI device has the option of using one clock for both transmit and receive (synchronous mode), or independent clocks (asynchronous). The SSI driver, however, programs the SSI into synchronous mode and then tries to program the clock registers independently. The result is that the wrong sample size is usually generated during recording. This patch fixes the discrepancy by restricting the sample rate and sample size of the playback and capture streams. The SSI driver remembers which stream is opened first. When a second stream is opened, that stream is constrained to the same sample rate and size as the first stream. A future version of this driver will lift the sample size restriction. Supporting independent sample rates is more difficult, because only certain codecs provide dual independent clocks. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-07-10ALSA: asoc: fsl - merge structs snd_soc_codec_dai and snd_soc_cpu_dai.Liam Girdwood1-12/+12
This patch merges struct snd_soc_codec_dai and struct snd_soc_cpu_dai into struct snd_soc_dai for the Freescale PPC platform. Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-05-13[ALSA] soc - fsl_ssi.c fix "BUG: scheduling while atomic"Anton Vorontsov1-1/+1
This patch fixes following bug caught with PREEMPT enabled: root@b1:~# cat /dev/dsp > /dev/null BUG: scheduling while atomic: cat/965/0x00000003 Call Trace: [df165ce0] [c0008e84] show_stack+0x4c/0x1ac (unreliable) [df165d20] [c001c18c] __schedule_bug+0x64/0x78 [df165d30] [c02b3344] schedule+0x2d8/0x334 [df165d70] [c02b3674] schedule_timeout+0x64/0xe4 [df165db0] [c002c05c] msleep+0x1c/0x34 [df165dc0] [c01f2fe0] fsl_ssi_trigger+0x130/0x144 [df165dd0] [c01ece54] soc_pcm_trigger+0x94/0xb8 [df165df0] [c01da764] snd_pcm_do_start+0x48/0x60 [df165e00] [c01da630] snd_pcm_action_single+0x4c/0xb4 [df165e20] [c01e0f50] snd_pcm_lib_read1+0x2a0/0x2d4 [df165e70] [c01ec274] snd_pcm_oss_read3+0xf0/0x13c [df165eb0] [c01ec2e4] snd_pcm_oss_read2+0x24/0x4c [df165ec0] [c01ec4ac] snd_pcm_oss_read+0x1a0/0x1f0 [df165ef0] [c0076478] vfs_read+0xb4/0x108 [df165f10] [c00768cc] sys_read+0x4c/0x90 [df165f40] [c00117a4] ret_from_syscall+0x0/0x38 Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-04-24[ALSA] Removed deprecated sound/driver.h from Freescale MPC8610 driversTimur Tabi1-1/+0
With commit 9004acc70e8c49c50c4c7b652f906f1e0ed5709d, include/sound/driver.h is deprecated. This patch removes the #include from fsl_ssi.c and fsl_dma.c. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-01-31[ALSA] Add ASoC drivers for the Freescale MPC8610 SoCTimur Tabi1-0/+644
Add the ASoC drivers for the Freescale MPC8610 SoC and the MPC8610 HPCD reference board. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>