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Date: Tue, 2 Jul 2019 01:43:14 +0100 From: Nicola Lunghi <nick83ola@...il.com> To: alsa-devel@...a-project.org Cc: info@...sverwiebe.de, Nicola Lunghi <nick83ola@...il.com>, Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, Allison Randal <allison@...utok.net>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Richard Fontana <rfontana@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Jussi Laako <jussi@...arnerd.net>, linux-kernel@...r.kernel.org Subject: [PATCH] ALSA: usb-audio: fix Line6 Helix audio format rates Line6 Helix and HX stomp don't support retrieving the number of clock sample rate. Add a quirk to return the default value of 48Khz. Signed-off-by: Nicola Lunghi <nick83ola@...il.com> --- sound/usb/format.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/sound/usb/format.c b/sound/usb/format.c index c02b51a82775..05442f6ada62 100644 --- a/sound/usb/format.c +++ b/sound/usb/format.c @@ -313,10 +313,32 @@ static int parse_audio_format_rates_v2v3(struct snd_usb_audio *chip, tmp, sizeof(tmp)); if (ret < 0) { - dev_err(&dev->dev, - "%s(): unable to retrieve number of sample rates (clock %d)\n", + switch (chip->usb_id) { + /* LINE 6 HX pedals don't support getting the clock sample rate. + * Set the framerate to 48khz by default + */ + case USB_ID(0x0E41, 0x4244): /* HELIX */ + case USB_ID(0x0E41, 0x4246): /* HX STOMP */ + dev_warn(&dev->dev, + "%s(): line6 helix: unable to retrieve number of sample rates. Set it to default value (clock %d).\n", __func__, clock); - goto err; + fp->nr_rates = 1; + fp->rate_min = 48000; + fp->rate_max = 48000; + fp->rates = SNDRV_PCM_RATE_48000; + fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL); + if (!fp->rate_table) { + ret = -ENOMEM; + goto err_free; + } + fp->rate_table[0] = 48000; + return 0; + default: + dev_err(&dev->dev, + "%s(): unable to retrieve number of sample rates (clock %d)\n", + __func__, clock); + goto err; + } } nr_triplets = (tmp[1] << 8) | tmp[0]; -- 2.19.1
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