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extcon: madera: Add support for 2 gpio mic bias switch.

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This is port from switch-madera driver.

Change-Id: I491a03a9cebfca1ff8ee9f71d6c9a3000e21d5a8
Signed-off-by: Vlad Karpovich <Vlad.Karpovich@cirrus.com>
Signed-off-by: Ravi Vembu <raviv@motorola.com>

Mot-CRs-Fixed: (CR)
Change-Id: I491a03a9cebfca1ff8ee9f71d6c9a3000e21d5a8
Reviewed-on: https://gerrit.mot.com/1209118
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Reviewed-by: Rav(CR) Vembu <raviv@motorola.com>
Tested-by: Jira Key
Submit-Approved: Jira Key
This commit is contained in:
Karpovich@cirrus.com 2018-07-12 13:03:40 -05:00 • committed by Ravikumar Vembu
commit 4d34365898
3 changed files with 29 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Documentation/devicetree/bindings/extcon/extcon-madera.txt
View file

@ -18,9 +18,13 @@ Optional properties:
First cell is the value for the SW1_MODE
Second cell is the value for the SW2_MODE (cs47l90, cs47l91)
- cirrus,micd-pol-gpios : GPIO specifier for the GPIO controlling the headset
- cirrus,micd-pol-gpio : GPIO specifier for the GPIO controlling the headset
polarity if one exists. One cell for each child node.
- cirrus,micd-pol-alt-gpio : GPIO specifier for second GPIO controlling the headset
polarity if one exist. If 2 alt gpio is configured, its value will be set opposite
to the first GPIO.
Child node mandatory properties:
- reg : output number this configuration applies to, must be 1

33
drivers/extcon/extcon-madera.c
View file

@ -946,9 +946,12 @@ static void madera_extcon_set_mode(struct madera_extcon *info, int mode)
info->micd_modes[mode].bias, info->micd_modes[mode].gpio,
info->micd_modes[mode].hp_gnd);
if (info->micd_pol_gpio > 0)
gpiod_set_value_cansleep(info->micd_pol_gpio,
info->micd_modes[mode].gpio);
if (info->micd_pol_gpio[0] > 0)
gpiod_set_value_cansleep(info->micd_pol_gpio[0],
info->micd_modes[mode].gpio);
if (info->micd_pol_gpio[1] > 0)
gpiod_set_value_cansleep(info->micd_pol_gpio[1],
!info->micd_modes[mode].gpio);
switch (madera->type) {
case CS47L35:
@ -2455,15 +2458,20 @@ static void madera_extcon_process_accdet_node(struct madera_extcon *info,
madera_extcon_get_hpd_pins(info, node, pdata);
madera_extcon_get_micd_configs(info, node, pdata);
info->micd_pol_gpio = devm_get_gpiod_from_child(madera->dev,
info->micd_pol_gpio[0] = devm_get_gpiod_from_child(madera->dev,
"cirrus,micd-pol",
node);
if (IS_ERR(info->micd_pol_gpio)) {
if (IS_ERR(info->micd_pol_gpio[0])) {
dev_warn(info->dev,
"Malformed cirrus,micd-pol-gpios ignored: %ld\n",
PTR_ERR(info->micd_pol_gpio));
info->micd_pol_gpio = 0;
PTR_ERR(info->micd_pol_gpio[0]));
info->micd_pol_gpio[0] = 0;
}
info->micd_pol_gpio[1] = devm_get_gpiod_from_child(madera->dev,
"cirrus,micd-pol-alt",
node);
if (IS_ERR(info->micd_pol_gpio[1]))
info->micd_pol_gpio[1] = 0;
}
static int madera_extcon_get_device_pdata(struct madera_extcon *info)
@ -2531,12 +2539,16 @@ static void madera_extcon_dump_config(struct madera_extcon *info)
MADERA_EXTCON_PDATA_DUMP(micd_open_circuit_declare, "%u");
MADERA_EXTCON_PDATA_DUMP(micd_software_compare, "%u");
if (info->micd_pol_gpio > 0)
if (info->micd_pol_gpio[0] > 0)
dev_dbg(info->dev, "micd_pol_gpio: %d\n",
desc_to_gpio(info->micd_pol_gpio));
desc_to_gpio(info->micd_pol_gpio[0]));
else
dev_dbg(info->dev, "micd_pol_gpio: 0\n");
if (info->micd_pol_gpio[1] > 0)
dev_dbg(info->dev, "micd_pol_gpio-alt: %d\n",
desc_to_gpio(info->micd_pol_gpio[1]));
dev_dbg(info->dev, "\tmicd_ranges {\n");
for (j = 0; j < info->num_micd_ranges; ++j)
dev_dbg(info->dev, "\t\tmax: %d key: %d\n",
@ -2881,7 +2893,8 @@ static int madera_extcon_probe(struct platform_device *pdev)
return ret;
}
info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
info->micd_pol_gpio[0] = gpio_to_desc(pdata->micd_pol_gpio);
info->micd_pol_gpio[1] = 0;
} else {
ret = madera_extcon_get_device_pdata(info);
if (ret < 0)

2
include/linux/extcon/extcon-madera.h
View file

@ -70,7 +70,7 @@ struct madera_extcon {
struct regulator *micvdd;
struct input_dev *input;
struct extcon_dev *edev;
struct gpio_desc *micd_pol_gpio;
struct gpio_desc *micd_pol_gpio[2];
u16 last_jackdet;
int hp_tuning_level;