[alsa-devel] [PATCH] ASoC: rt5645: Add quirk override by module option

[Takashi Iwai]

For making the development easier, add quirk module option to override
the platform data setup.  For example, a platform with inverted jack
detection with jd_mode=2, pass the value 0x21 (0x1 = inv_jd1_1, 0x20 =
jd_mode=2).  It overrides the whole pdata fields, so pass it
carefully.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/soc/codecs/rt5645.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 308c22f5909a..22771e6ab3fa 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -34,6 +34,17 @@
 #include "rl6231.h"
 #include "rt5645.h"
 
+#define QUIRK_INV_JD1_1(q)	((q) & 1)
+#define QUIRK_LEVEL_IRQ(q)	(((q) >> 1) & 1)
+#define QUIRK_IN2_DIFF(q)	(((q) >> 2) & 1)
+#define QUIRK_JD_MODE(q)	(((q) >> 4) & 7)
+#define QUIRK_DMIC1_DATA_PIN(q)	(((q) >> 8) & 3)
+#define QUIRK_DMIC2_DATA_PIN(q)	(((q) >> 12) & 3)
+
+static unsigned int quirk = -1;
+module_param(quirk, uint, 0444);
+MODULE_PARM_DESC(quirk, "RT5645 pdata quirk override");
+
 #define RT5645_DEVICE_ID 0x6308
 #define RT5650_DEVICE_ID 0x6419
 
@@ -3679,6 +3690,15 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
 	else if (dmi_check_system(dmi_platform_gpd_win))
 		rt5645->pdata = gpd_win_platform_data;
 
+	if (quirk != -1) {
+		rt5645->pdata.in2_diff = QUIRK_IN2_DIFF(quirk);
+		rt5645->pdata.level_trigger_irq = QUIRK_LEVEL_IRQ(quirk);
+		rt5645->pdata.inv_jd1_1 = QUIRK_INV_JD1_1(quirk);
+		rt5645->pdata.jd_mode = QUIRK_JD_MODE(quirk);
+		rt5645->pdata.dmic1_data_pin = QUIRK_DMIC1_DATA_PIN(quirk);
+		rt5645->pdata.dmic2_data_pin = QUIRK_DMIC2_DATA_PIN(quirk);
+	}
+
 	rt5645->gpiod_hp_det = devm_gpiod_get_optional(&i2c->dev, "hp-detect",
 						       GPIOD_IN);
 
-- 
2.13.2