[PATCH v2 10/27] ALSA: hda/cs8409: Simplify CS42L42 jack detect.

[Vitaly Rodionov]

From: Stefan Binding <sbinding at opensource.cirrus.com>

Cleanup interrupt masks.
Remove unnecessary read/writes.
Ensure Tip Sense/Type Detection interrupts are enabled/disabled
when needed.

Signed-off-by: Stefan Binding <sbinding at opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr at opensource.cirrus.com>

Changes in v2:
- No changes

---
 sound/pci/hda/patch_cs8409.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c
index f4401c1e8572..4ad832f5c4ba 100644
--- a/sound/pci/hda/patch_cs8409.c
+++ b/sound/pci/hda/patch_cs8409.c
@@ -406,10 +406,8 @@ static void cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec)
 	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1b71, 0x00C0, 1);
 	/* Clear interrupts status */
 	cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f, 1);
-	cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1b7b, 1);
 	/* Enable interrupt */
-	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0x03, 1);
-	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1b79, 0x00, 1);
+	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xF3, 1);
 
 	mutex_unlock(&spec->cs8409_i2c_mux);
 }
@@ -424,11 +422,13 @@ static void cs8409_cs42l42_run_jack_detect(struct hda_codec *codec)
 	/* Clear interrupts */
 	cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308, 1);
 	cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1b77, 1);
+	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xFF, 1);
+	cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f, 1);
 
 	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1102, 0x87, 1);
 	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1f06, 0x86, 1);
 	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1b74, 0x07, 1);
-	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x131b, 0x01, 1);
+	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x131b, 0xFD, 1);
 	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1120, 0x80, 1);
 	/* Wait ~110ms*/
 	usleep_range(110000, 200000);
@@ -487,9 +487,6 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 	reg_hs_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1124, 1);
 	reg_ts_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f, 1);
 
-	/* Clear interrupts, by reading interrupt status registers */
-	cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1b7b, 1);
-
 	mutex_unlock(&spec->cs8409_i2c_mux);
 
 	/* If status values are < 0, read error has occurred. */
@@ -499,6 +496,11 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 	/* HSDET_AUTO_DONE */
 	if (reg_cdc_status & CS42L42_HSDET_AUTO_DONE) {
 
+		mutex_lock(&spec->cs8409_i2c_mux);
+		/* Disable HSDET_AUTO_DONE */
+		cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x131b, 0xFF, 1);
+		mutex_unlock(&spec->cs8409_i2c_mux);
+
 		type = ((reg_hs_status & CS42L42_HSTYPE_MASK) + 1);
 		/* CS42L42 reports optical jack as type 4
 		 * We don't handle optical jack
@@ -521,6 +523,11 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 			}
 		}
 
+		mutex_lock(&spec->cs8409_i2c_mux);
+		/* Re-Enable Tip Sense Interrupt */
+		cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xF3, 1);
+		mutex_unlock(&spec->cs8409_i2c_mux);
+
 	} else {
 		/* TIP_SENSE INSERT/REMOVE */
 		switch (reg_ts_status) {
-- 
2.25.1