[PATCH 10/15] ASoC: cs42l42: Report jack and button detection
Lucas Tanure
tanureal at opensource.cirrus.com
Tue Mar 2 18:04:49 CET 2021
Report the Jack events to the user space through ALSA.
Also moves request_threaded_irq() to component_probe so it don't get
interrupts before the initialization the struct snd_soc_jack.
Signed-off-by: Lucas Tanure <tanureal at opensource.cirrus.com>
---
sound/soc/codecs/cs42l42.c | 142 +++++++++++++++++++++++++------------
sound/soc/codecs/cs42l42.h | 4 ++
2 files changed, 99 insertions(+), 47 deletions(-)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index 9a7217cf59f36..8345f52ec9d58 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -517,29 +517,6 @@ static const struct snd_soc_dapm_route cs42l42_audio_map[] = {
{ "SDOUT2", NULL, "ASP TX EN" },
};
-static int cs42l42_component_probe(struct snd_soc_component *component)
-{
- struct cs42l42_private *cs42l42 =
- (struct cs42l42_private *)snd_soc_component_get_drvdata(component);
-
- cs42l42->component = component;
-
- return 0;
-}
-
-static const struct snd_soc_component_driver soc_component_dev_cs42l42 = {
- .probe = cs42l42_component_probe,
- .dapm_widgets = cs42l42_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(cs42l42_dapm_widgets),
- .dapm_routes = cs42l42_audio_map,
- .num_dapm_routes = ARRAY_SIZE(cs42l42_audio_map),
- .controls = cs42l42_snd_controls,
- .num_controls = ARRAY_SIZE(cs42l42_snd_controls),
- .idle_bias_on = 1,
- .endianness = 1,
- .non_legacy_dai_naming = 1,
-};
-
struct cs42l42_pll_params {
u32 sclk;
u8 mclk_div;
@@ -1196,7 +1173,7 @@ static void cs42l42_cancel_hs_type_detect(struct cs42l42_private *cs42l42)
(3 << CS42L42_HSDET_AUTO_TIME_SHIFT));
}
-static void cs42l42_handle_button_press(struct cs42l42_private *cs42l42)
+static int cs42l42_handle_button_press(struct cs42l42_private *cs42l42)
{
int bias_level;
unsigned int detect_status;
@@ -1239,17 +1216,24 @@ static void cs42l42_handle_button_press(struct cs42l42_private *cs42l42)
switch (bias_level) {
case 1: /* Function C button press */
+ bias_level = SND_JACK_BTN_2;
dev_dbg(cs42l42->component->dev, "Function C button press\n");
break;
case 2: /* Function B button press */
+ bias_level = SND_JACK_BTN_1;
dev_dbg(cs42l42->component->dev, "Function B button press\n");
break;
case 3: /* Function D button press */
+ bias_level = SND_JACK_BTN_3;
dev_dbg(cs42l42->component->dev, "Function D button press\n");
break;
case 4: /* Function A button press */
+ bias_level = SND_JACK_BTN_0;
dev_dbg(cs42l42->component->dev, "Function A button press\n");
break;
+ default:
+ bias_level = 0;
+ break;
}
/* Set button detect level sensitivity back to default */
@@ -1279,6 +1263,8 @@ static void cs42l42_handle_button_press(struct cs42l42_private *cs42l42)
(0 << CS42L42_M_HSBIAS_HIZ_SHIFT) |
(1 << CS42L42_M_SHORT_RLS_SHIFT) |
(1 << CS42L42_M_SHORT_DET_SHIFT));
+
+ return bias_level;
}
struct cs42l42_irq_params {
@@ -1323,6 +1309,8 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
unsigned int current_plug_status;
unsigned int current_button_status;
unsigned int i;
+ int report = 0;
+
/* Read sticky registers to clear interurpt */
for (i = 0; i < ARRAY_SIZE(stickies); i++) {
@@ -1349,9 +1337,20 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
if ((~masks[5]) & irq_params_table[5].mask) {
if (stickies[5] & CS42L42_HSDET_AUTO_DONE_MASK) {
cs42l42_process_hs_type_detect(cs42l42);
- dev_dbg(component->dev,
- "Auto detect done (%d)\n",
- cs42l42->hs_type);
+ switch(cs42l42->hs_type){
+ case CS42L42_PLUG_CTIA:
+ case CS42L42_PLUG_OMTP:
+ snd_soc_jack_report(&cs42l42->jack, SND_JACK_HEADSET,
+ SND_JACK_HEADSET);
+ break;
+ case CS42L42_PLUG_HEADPHONE:
+ snd_soc_jack_report(&cs42l42->jack, SND_JACK_HEADPHONE,
+ SND_JACK_HEADPHONE);
+ break;
+ default:
+ break;
+ }
+ dev_dbg(component->dev, "Auto detect done (%d)\n", cs42l42->hs_type);
}
}
@@ -1369,8 +1368,19 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
if (cs42l42->plug_state != CS42L42_TS_UNPLUG) {
cs42l42->plug_state = CS42L42_TS_UNPLUG;
cs42l42_cancel_hs_type_detect(cs42l42);
- dev_dbg(component->dev,
- "Unplug event\n");
+
+ switch(cs42l42->hs_type){
+ case CS42L42_PLUG_CTIA:
+ case CS42L42_PLUG_OMTP:
+ snd_soc_jack_report(&cs42l42->jack, 0, SND_JACK_HEADSET);
+ break;
+ case CS42L42_PLUG_HEADPHONE:
+ snd_soc_jack_report(&cs42l42->jack, 0, SND_JACK_HEADPHONE);
+ break;
+ default:
+ break;
+ }
+ dev_dbg(component->dev, "Unplug event\n");
}
break;
@@ -1385,14 +1395,15 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data)
if (!(current_button_status &
CS42L42_M_HSBIAS_HIZ_MASK)) {
- if (current_button_status &
- CS42L42_M_DETECT_TF_MASK) {
- dev_dbg(component->dev,
- "Button released\n");
- } else if (current_button_status &
- CS42L42_M_DETECT_FT_MASK) {
- cs42l42_handle_button_press(cs42l42);
+ if (current_button_status & CS42L42_M_DETECT_TF_MASK) {
+ dev_dbg(component->dev, "Button released\n");
+ report = 0;
+ } else if (current_button_status & CS42L42_M_DETECT_FT_MASK) {
+ report = cs42l42_handle_button_press(cs42l42);
+
}
+ snd_soc_jack_report(&cs42l42->jack, report, SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+ SND_JACK_BTN_2 | SND_JACK_BTN_3);
}
}
@@ -1731,6 +1742,53 @@ static int cs42l42_handle_device_data(struct i2c_client *i2c_client,
return 0;
}
+static int cs42l42_component_probe(struct snd_soc_component *comp)
+{
+ struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(comp);
+ struct snd_soc_card *crd = comp->card;
+ int ret = 0;
+
+ cs42l42->component = comp;
+
+ ret = snd_soc_card_jack_new(crd, "CS42L42 Headset", SND_JACK_HEADSET | SND_JACK_BTN_0 |
+ SND_JACK_BTN_1 | SND_JACK_BTN_2 | SND_JACK_BTN_3,
+ &cs42l42->jack, NULL, 0);
+ if (ret < 0) {
+ dev_err(comp->dev, "Cannot create CS42L42 Headset: %d\n", ret);
+ return ret;
+ }
+
+ /* Request IRQ */
+ ret = request_threaded_irq(cs42l42->irq, NULL, cs42l42_irq_thread,
+ IRQF_ONESHOT | IRQF_TRIGGER_LOW, "cs42l42", cs42l42);
+
+ if (ret)
+ dev_err(comp->dev, "Failed to request IRQ: %d\n", ret);
+
+ return ret;
+}
+
+static void cs42l42_component_remove(struct snd_soc_component *comp)
+{
+ struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(comp);
+
+ free_irq(cs42l42->irq, cs42l42);
+}
+
+static const struct snd_soc_component_driver soc_component_dev_cs42l42 = {
+ .probe = cs42l42_component_probe,
+ .remove = cs42l42_component_remove,
+ .dapm_widgets = cs42l42_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(cs42l42_dapm_widgets),
+ .dapm_routes = cs42l42_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(cs42l42_audio_map),
+ .controls = cs42l42_snd_controls,
+ .num_controls = ARRAY_SIZE(cs42l42_snd_controls),
+ .idle_bias_on = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id)
{
@@ -1745,6 +1803,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
return -ENOMEM;
i2c_set_clientdata(i2c_client, cs42l42);
+ cs42l42->irq = i2c_client->irq;
cs42l42->regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap);
if (IS_ERR(cs42l42->regmap)) {
@@ -1787,17 +1846,6 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client,
}
usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2);
- /* Request IRQ */
- ret = devm_request_threaded_irq(&i2c_client->dev,
- i2c_client->irq,
- NULL, cs42l42_irq_thread,
- IRQF_ONESHOT | IRQF_TRIGGER_LOW,
- "cs42l42", cs42l42);
-
- if (ret != 0)
- dev_err(&i2c_client->dev,
- "Failed to request IRQ: %d\n", ret);
-
/* initialize codec */
ret = regmap_read(cs42l42->regmap, CS42L42_DEVID_AB, ®);
devid = (reg & 0xFF) << 12;
diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h
index c373259ed46f7..267c2b616e57d 100644
--- a/sound/soc/codecs/cs42l42.h
+++ b/sound/soc/codecs/cs42l42.h
@@ -12,6 +12,8 @@
#ifndef __CS42L42_H__
#define __CS42L42_H__
+#include <sound/jack.h>
+
#define CS42L42_PAGE_REGISTER 0x00 /* Page Select Register */
#define CS42L42_WIN_START 0x00
#define CS42L42_WIN_LEN 0x100
@@ -768,6 +770,8 @@ struct cs42l42_private {
struct regulator_bulk_data supplies[CS42L42_NUM_SUPPLIES];
struct gpio_desc *reset_gpio;
struct completion pdn_done;
+ struct snd_soc_jack jack;
+ int irq;
u32 sclk;
u32 srate;
u8 plug_state;
--
2.30.1
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