From 9f2cf73ed65b598514e4858ca3d602710718ab93 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Sun, 23 Apr 2017 09:22:56 +0200 Subject: [PATCH] ASoC: bytcr_rt5640: Allow quirk set via module option The bytcr-rt5640 driver has a few quirk setups depending on the board, where the quirk value is set by DMI matching. When you have a new device to add the support, you often experience to try the different quirk by trial-and-error. Or, you may have a development model that still has no proper DMI string. In either case, you'd need to compile the driver at each time. This patch introduces a module option to override the quirk value on the fly. User can boot like snd-soc-sst-bytcr-rt5640.quirk=0x4004 to override the default value without recompilation. It's a raw value, so user needs to check the source code for the meaning of each bit. Signed-off-by: Takashi Iwai Acked-by: Pierre-Louis Bossart Signed-off-by: Mark Brown --- sound/soc/intel/boards/bytcr_rt5640.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c index 5c7219fb3aa8..0ac32788f216 100644 --- a/sound/soc/intel/boards/bytcr_rt5640.c +++ b/sound/soc/intel/boards/bytcr_rt5640.c @@ -19,6 +19,7 @@ #include #include +#include #include #include #include @@ -58,6 +59,9 @@ struct byt_rt5640_private { }; static unsigned long byt_rt5640_quirk = BYT_RT5640_MCLK_EN; +static unsigned int quirk_override; +module_param_named(quirk, quirk_override, int, 0444); +MODULE_PARM_DESC(quirk, "Board-specific quirk override"); static void log_quirks(struct device *dev) { @@ -806,6 +810,11 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev) /* check quirks before creating card */ dmi_check_system(byt_rt5640_quirk_table); + if (quirk_override) { + dev_info(&pdev->dev, "Overriding quirk %0x => 0x%x\n", + (unsigned int)byt_rt5640_quirk, quirk_override); + byt_rt5640_quirk = quirk_override; + } log_quirks(&pdev->dev); if ((byt_rt5640_quirk & BYT_RT5640_SSP2_AIF2) || -- 2.20.1