April 2008 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] How can you tell if the speaker jack on your sound card has anything plugged into it???
by Sean Thayne 25 Apr '08

25 Apr '08

Hi Everybody, I was talking with some users in the irc channel in the free node, and was hoping to find a way to get the information about weither or not anything was plugged into the sound card, I've seen this feature with windows vista. I search thru a bunch of documentation sites and also scanned the /proc & /sys to no avail... Thanks, Sean T

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[alsa-devel] Status of X-Fi support in ALSA?
by James Pearson 25 Apr '08

25 Apr '08

Out of general interest, what is the current status of X-Fi support? On a related note, I notice that Creative have recently released the 2nd beta of their closed source drivers: <http://connect.creativelabs.com/opensource/Wiki/SoundCard%20Support.aspx> Thanks James Pearson

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[alsa-devel] [RFC] ucb1400 touchscreen, irq auto probing and ac97 with its private field
by Sebastian Siewior 25 Apr '08

25 Apr '08

Hello, I've sent a RFC to the alsa mailing list [1] about adding an extra field in order to pass the IRQ from the AC97 driver to the ucb1400 driver. The result was: - William Pitcock recommended to hack up the ucb1400 driver and save the irq there. The result is [2]. What I don't like very much is the global variable and the fact that has to be done for every platform. - Mark Brown has the same problem with his wm97xx driver [3]. and while browsing a dead list archive of linux-input I noticed that a guy named Peter Ma has the same problem on his AVR32 [4]. I haven't heard anything from the ALSA Maintainer but according to git he didn't put a sing-of-by line since Thu Jan 31 17:40:18 2008 +0100 so maybe he is sleeping. That's why I've add Takashi Iwai since he seems to be in charge some how. Now I'm curious what solution the people here prefer: - adding a private field [1] (my favorite) - hacking up the ucb1400 [2] (doesn't solve [3] and needs addition code to solve [4]). - something totally different what did not come to my attention yet. [1] http://mailman.alsa-project.org/pipermail/alsa-devel/2008-March/006555.html [2] http://mailman.alsa-project.org/pipermail/alsa-devel/2008-March/006559.html [3] http://mailman.alsa-project.org/pipermail/alsa-devel/2008-March/006564.html [4] http://www.mail-archive.com/linux-input@vger.kernel.org/msg00307.html Sebastian

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[alsa-devel] [PATCH 1/3] asoc tlv320aic3x: revisit clock setup
by Daniel Mack 25 Apr '08

25 Apr '08

This patch cleans up the clocking setup for aic3x codecs. It drops the dividers table and determines the PLL control values programatically. Under certain conditions, the PLL is disabled entirely which could save some power. Signed-off-by: Daniel Mack <daniel(a)caiaq.de>

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[alsa-devel] [PATCH 3/3] asoc tlv320aic3x: add more routing controls
by Daniel Mack 25 Apr '08

25 Apr '08

Add more routing controls to AIC3x chips to allow things like routing the left PGA input to right line out. Signed-off-by: Daniel Mack <daniel(a)caiaq.de>

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[alsa-devel] [PATCH 2/3] asoc tlv320aic3x: add GPIO support
by Daniel Mack 25 Apr '08

25 Apr '08

This patch adds support for AIC3x GPIO lines. They can be configured for many possible functions as well as be driven manually. I also introduced i2c read functionality since the GPIO state register has to be read from hardware every time and can not be served from cache. Signed-off-by: Daniel Mack <daniel(a)caiaq.de>

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[alsa-devel] asoc tsc210x
by ext-jukka.hynninen＠vaisala.com 25 Apr '08

25 Apr '08

Hello all, I'm assessing TSC2100 codec on an embdedded system. Any intentions on implementing an ASoC codec driver for TSC210x family? Could the multi-function nature of the chip raise some issues with ASoC framework? -Jukka

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[alsa-devel] intel8x0 - copy function
by Harsha priya gupta 25 Apr '08

25 Apr '08

Hi, I am using Intel8x0 driver for my sound card. During data transfer from user to driver, I am trying to collect the buffer. I have implemented .copy function and also disabled the mmap. If I disable the mmap in .info structure, i get an error that the device is in use. If i try getting the debug messages; It fails in snd_pcm_common_ioctl1 for SNDRV_PCM_IOCTL_HW_REFINE. Can anyone please guide me on to the right path of implementing what I want to do. -- -Harsha

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[alsa-devel] [RFC] [PATCH] asoc tlv320aic3x: revisit clocking setup
by Daniel Mack 25 Apr '08

25 Apr '08

Hi, attached is a patch that reworks the clocking setup for the aic3x codec. It drops the dividers table and calculates the values instead. When simulated, this code does the right thing for all the examples described in the datasheet. Please review and let me know about any concerns. BTW - I can't get in touch with the original author of this driver as his mail address doesn't work: <vbarinov(a)ru.mvista.com>: host mx2.mvista.com[206.112.117.9] said: 451 qq internal bug (#4.3.0) (in reply to end of DATA command) Does anyone have another contact? Best regards, Daniel

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[alsa-devel] [RFC / PATCH] [SOUND] add a private field for ac97-device drivers and let ucb1400 be its first user
by Sebastian Siewior 25 Apr '08

25 Apr '08

From: Sebastian Siewior <bigeasy(a)linutronix.de> Currently the UCB1400 driver discovers the interrupt via probing. This works probably only on x86. This patch adds a private field to the ac97 struct where the ac97 driver can deposit informations for the device driver that serves a device which is attached to the ac97 bus. This patch also converts the UCB1400 driver to use this information if available. Signed-off-by: Sebastian Siewior <bigeasy(a)linutronix.de> --- drivers/input/touchscreen/ucb1400_ts.c | 12 ++++++++---- include/sound/ac97_codec.h | 4 ++++ 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c index 5ee175e..531fb4b 100644 --- a/drivers/input/touchscreen/ucb1400_ts.c +++ b/drivers/input/touchscreen/ucb1400_ts.c @@ -494,10 +494,14 @@ static int ucb1400_ts_probe(struct device *dev) goto err_free_devs; } - error = ucb1400_detect_irq(ucb); - if (error) { - printk(KERN_ERR "UCB1400: IRQ probe failed\n"); - goto err_free_devs; + if (!ucb->ac97->device_private_data) { + error = ucb1400_detect_irq(ucb); + if (error) { + printk(KERN_ERR "UCB1400: IRQ probe failed\n"); + goto err_free_devs; + } + } else { + ucb->irq = (int) ucb->ac97->device_private_data; } error = request_irq(ucb->irq, ucb1400_hard_irq, IRQF_TRIGGER_RISING, diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h index 0148058..b1af896 100644 --- a/include/sound/ac97_codec.h +++ b/include/sound/ac97_codec.h @@ -474,6 +474,10 @@ struct snd_ac97 { struct snd_ac97_build_ops * build_ops; void *private_data; void (*private_free) (struct snd_ac97 *ac97); + /* This field is used by device drivers which serve devices which are + * attached to the AC97 bus. + */ + void *device_private_data; /* --- */ struct snd_ac97_bus *bus; struct pci_dev *pci; /* assigned PCI device - used for quirks */ -- 1.5.4.3

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