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ASoC: rt5640: Add rt5640_set_ovcd_params() helper

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Some devices don't use the builtin jack-detect but can still benefit
from the mic-bias-current over-current-detection to differentiate
between headphones vs a headset.

Move the ovcd init code from rt5640_enable_jack_detect() into a new
rt5640_set_ovcd_params() helper and export this helper as well
as a couple of related ovcd functions.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210819190543.784415-5-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Hans de Goede 2021-08-19 21:05:41 +02:00 committed by Mark Brown
parent d21213b450
commit e3f2a6603a
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 34 additions and 20 deletions
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50
sound/soc/codecs/rt5640.c
View File

@ -2093,7 +2093,7 @@ int rt5640_sel_asrc_clk_src(struct snd_soc_component *component,
}
EXPORT_SYMBOL_GPL(rt5640_sel_asrc_clk_src);
static void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component)
void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component)
{
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
@ -2105,8 +2105,9 @@ static void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component)
snd_soc_dapm_sync_unlocked(dapm);
snd_soc_dapm_mutex_unlock(dapm);
}
EXPORT_SYMBOL_GPL(rt5640_enable_micbias1_for_ovcd);
static void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component)
void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component)
{
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
@ -2117,6 +2118,7 @@ static void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component
snd_soc_dapm_sync_unlocked(dapm);
snd_soc_dapm_mutex_unlock(dapm);
}
EXPORT_SYMBOL_GPL(rt5640_disable_micbias1_for_ovcd);
static void rt5640_enable_micbias1_ovcd_irq(struct snd_soc_component *component)
{
@ -2368,6 +2370,31 @@ static void rt5640_cancel_work(void *data)
cancel_delayed_work_sync(&rt5640->bp_work);
}
void rt5640_set_ovcd_params(struct snd_soc_component *component)
{
struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
snd_soc_component_write(component, RT5640_PR_BASE + RT5640_BIAS_CUR4,
0xa800 | rt5640->ovcd_sf);
snd_soc_component_update_bits(component, RT5640_MICBIAS,
RT5640_MIC1_OVTH_MASK | RT5640_MIC1_OVCD_MASK,
rt5640->ovcd_th | RT5640_MIC1_OVCD_EN);
/*
* The over-current-detect is only reliable in detecting the absence
* of over-current, when the mic-contact in the jack is short-circuited,
* the hardware periodically retries if it can apply the bias-current
* leading to the ovcd status flip-flopping 1-0-1 with it being 0 about
* 10% of the time, as we poll the ovcd status bit we might hit that
* 10%, so we enable sticky mode and when checking OVCD we clear the
* status, msleep() a bit and then check to get a reliable reading.
*/
snd_soc_component_update_bits(component, RT5640_IRQ_CTRL2,
RT5640_MB1_OC_STKY_MASK, RT5640_MB1_OC_STKY_EN);
}
EXPORT_SYMBOL_GPL(rt5640_set_ovcd_params);
static void rt5640_disable_jack_detect(struct snd_soc_component *component)
{
struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
@ -2415,24 +2442,7 @@ static void rt5640_enable_jack_detect(struct snd_soc_component *component,
/* Enabling jd2 in general control 2 */
snd_soc_component_write(component, RT5640_DUMMY2, 0x4001);
snd_soc_component_write(component, RT5640_PR_BASE + RT5640_BIAS_CUR4,
0xa800 | rt5640->ovcd_sf);
snd_soc_component_update_bits(component, RT5640_MICBIAS,
RT5640_MIC1_OVTH_MASK | RT5640_MIC1_OVCD_MASK,
rt5640->ovcd_th | RT5640_MIC1_OVCD_EN);
/*
* The over-current-detect is only reliable in detecting the absence
* of over-current, when the mic-contact in the jack is short-circuited,
* the hardware periodically retries if it can apply the bias-current
* leading to the ovcd status flip-flopping 1-0-1 with it being 0 about
* 10% of the time, as we poll the ovcd status bit we might hit that
* 10%, so we enable sticky mode and when checking OVCD we clear the
* status, msleep() a bit and then check to get a reliable reading.
*/
snd_soc_component_update_bits(component, RT5640_IRQ_CTRL2,
RT5640_MB1_OC_STKY_MASK, RT5640_MB1_OC_STKY_EN);
rt5640_set_ovcd_params(component);
/*
* All IRQs get or-ed together, so we need the jack IRQ to report 0

4
sound/soc/codecs/rt5640.h
View File

@ -2157,6 +2157,10 @@ int rt5640_dmic_enable(struct snd_soc_component *component,
bool dmic1_data_pin, bool dmic2_data_pin);
int rt5640_sel_asrc_clk_src(struct snd_soc_component *component,
unsigned int filter_mask, unsigned int clk_src);
void rt5640_set_ovcd_params(struct snd_soc_component *component);
void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component);
void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component);
int rt5640_detect_headset(struct snd_soc_component *component, struct gpio_desc *hp_det_gpio);
#endif