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extcon: arizona: Add support for select accessory detect mode when headphone detection

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This patch add support for select accessory detect mode to HPDETL or HPDETR.
Arizona provides a headphone detection circuit on the HPDETL and HPDETR pins
to measure the impedance of an external load connected to the headphone.

Depending on board design, headphone detect pins can change to HPDETR or HPDETL.

Signed-off-by: Inha Song <ideal.song@samsung.com>
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Inha Song 2015-05-04 13:42:13 +09:00 committed by Chanwoo Choi
parent 2b51f9c2f1
commit 9e86b2ad4c
3 changed files with 37 additions and 8 deletions
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38
drivers/extcon/extcon-arizona.c
View file

@ -32,13 +32,10 @@
#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
#include <dt-bindings/mfd/arizona.h>
#define ARIZONA_MAX_MICD_RANGE 8
#define ARIZONA_ACCDET_MODE_MIC 0
#define ARIZONA_ACCDET_MODE_HPL 1
#define ARIZONA_ACCDET_MODE_HPR 2
#define ARIZONA_MICD_CLAMP_MODE_JDL 0x4
#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5
#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
@ -671,9 +668,9 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info)
ret = regmap_update_bits(arizona->regmap,
ARIZONA_ACCESSORY_DETECT_MODE_1,
ARIZONA_ACCDET_MODE_MASK,
ARIZONA_ACCDET_MODE_HPL);
arizona->pdata.hpdet_channel);
if (ret != 0) {
dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
goto err;
}
@ -723,9 +720,9 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
ARIZONA_ACCESSORY_DETECT_MODE_1,
ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
info->micd_modes[0].src |
ARIZONA_ACCDET_MODE_HPL);
arizona->pdata.hpdet_channel);
if (ret != 0) {
dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
goto err;
}
@ -1121,6 +1118,26 @@ static void arizona_micd_set_level(struct arizona *arizona, int index,
regmap_update_bits(arizona->regmap, reg, mask, level);
}
static int arizona_extcon_of_get_pdata(struct arizona *arizona)
{
struct arizona_pdata *pdata = &arizona->pdata;
unsigned int val = ARIZONA_ACCDET_MODE_HPL;
of_property_read_u32(arizona->dev->of_node, "wlf,hpdet-channel", &val);
switch (val) {
case ARIZONA_ACCDET_MODE_HPL:
case ARIZONA_ACCDET_MODE_HPR:
pdata->hpdet_channel = val;
break;
default:
dev_err(arizona->dev,
"Wrong wlf,hpdet-channel DT value %d\n", val);
pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
}
return 0;
}
static int arizona_extcon_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
@ -1138,6 +1155,11 @@ static int arizona_extcon_probe(struct platform_device *pdev)
if (!info)
return -ENOMEM;
if (IS_ENABLED(CONFIG_OF)) {
if (!dev_get_platdata(arizona->dev))
arizona_extcon_of_get_pdata(arizona);
}
info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
if (IS_ERR(info->micvdd)) {
ret = PTR_ERR(info->micvdd);

4
include/dt-bindings/mfd/arizona.h
View file

@ -90,4 +90,8 @@
#define ARIZONA_INMODE_SE 1
#define ARIZONA_INMODE_DMIC 2
#define ARIZONA_ACCDET_MODE_MIC 0
#define ARIZONA_ACCDET_MODE_HPL 1
#define ARIZONA_ACCDET_MODE_HPR 2
#endif

3
include/linux/mfd/arizona/pdata.h
View file

@ -121,6 +121,9 @@ struct arizona_pdata {
/** GPIO used for mic isolation with HPDET */
int hpdet_id_gpio;
/** Channel to use for headphone detection */
unsigned int hpdet_channel;
/** Extra debounce timeout used during initial mic detection (ms) */
int micd_detect_debounce;