ASoC: nau8821: Add DMI quirk mechanism for active-high jack-detect

Add a quirk mechanism to allow specifying that active-high jack-detection
should be used on platforms where this info is not available in devicetree.

And add an entry for the Positivo CW14Q01P-V2 to the DMI table, so that
jack-detection will work properly on this laptop.

Signed-off-by: Edson Juliano Drosdeck <edson.drosdeck@gmail.com>
Link: https://lore.kernel.org/r/20230719200241.4865-1-edson.drosdeck@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c
index 96d7588..ca6beb2 100644 (file)
--- a/sound/soc/codecs/nau8821.c
+++ b/sound/soc/codecs/nau8821.c
@@ -10,6 +10,7 @@
 #include <linux/acpi.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/dmi.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
@@ -25,6 +26,13 @@
 #include <sound/tlv.h>
 #include "nau8821.h"
 
+#define NAU8821_JD_ACTIVE_HIGH                 BIT(0)
+
+static int nau8821_quirk;
+static int quirk_override = -1;
+module_param_named(quirk, quirk_override, uint, 0444);
+MODULE_PARM_DESC(quirk, "Board-specific quirk override");
+
 #define NAU_FREF_MAX 13500000
 #define NAU_FVCO_MAX 100000000
 #define NAU_FVCO_MIN 90000000
@@ -1792,6 +1800,33 @@ static int nau8821_setup_irq(struct nau8821 *nau8821)
        return 0;
 }
 
+/* Please keep this list alphabetically sorted */
+static const struct dmi_system_id nau8821_quirk_table[] = {
+       {
+               /* Positivo CW14Q01P-V2 */
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Positivo Tecnologia SA"),
+                       DMI_MATCH(DMI_BOARD_NAME, "CW14Q01P-V2"),
+               },
+               .driver_data = (void *)(NAU8821_JD_ACTIVE_HIGH),
+       },
+       {}
+};
+
+static void nau8821_check_quirks(void)
+{
+       const struct dmi_system_id *dmi_id;
+
+       if (quirk_override != -1) {
+               nau8821_quirk = quirk_override;
+               return;
+       }
+
+       dmi_id = dmi_first_match(nau8821_quirk_table);
+       if (dmi_id)
+               nau8821_quirk = (unsigned long)dmi_id->driver_data;
+}
+
 static int nau8821_i2c_probe(struct i2c_client *i2c)
 {
        struct device *dev = &i2c->dev;
@@ -1812,6 +1847,12 @@ static int nau8821_i2c_probe(struct i2c_client *i2c)
 
        nau8821->dev = dev;
        nau8821->irq = i2c->irq;
+
+       nau8821_check_quirks();
+
+       if (nau8821_quirk & NAU8821_JD_ACTIVE_HIGH)
+               nau8821->jkdet_polarity = 0;
+
        nau8821_print_device_properties(nau8821);
 
        nau8821_reset_chip(nau8821->regmap);