Re: [PATCH 16/18] power: supply: bq24190_charger: Remove extcon handling

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Hi Hans,

On Sun, Aug 6, 2017 at 5:35 AM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
> Now that drivers/i2c/busses/i2c-cht-wc.c uses
> "input-current-limit-from-supplier" instead of "extcon-name" the last
> user of the bq24190 extcon code is gone, remove it.
>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
>  drivers/power/supply/bq24190_charger.c | 107 ---------------------------------
>  1 file changed, 107 deletions(-)
>
> diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
> index 1f6424f0772f..0376de6d8e70 100644
> --- a/drivers/power/supply/bq24190_charger.c
> +++ b/drivers/power/supply/bq24190_charger.c
> @@ -11,7 +11,6 @@
>  #include <linux/module.h>
>  #include <linux/interrupt.h>
>  #include <linux/delay.h>
> -#include <linux/extcon.h>
>  #include <linux/of_irq.h>
>  #include <linux/of_device.h>
>  #include <linux/pm_runtime.h>
> @@ -155,9 +154,6 @@ struct bq24190_dev_info {
>         struct device                   *dev;
>         struct power_supply             *charger;
>         struct power_supply             *battery;
> -       struct extcon_dev               *extcon;
> -       struct notifier_block           extcon_nb;
> -       struct delayed_work             extcon_work;
>         char                            model_name[I2C_NAME_SIZE];
>         bool                            initialized;
>         bool                            irq_event;
> @@ -1530,75 +1526,6 @@ static irqreturn_t bq24190_irq_handler_thread(int irq, void *data)
>         return IRQ_HANDLED;
>  }
>
> -static void bq24190_extcon_work(struct work_struct *work)
> -{
> -       struct bq24190_dev_info *bdi =
> -               container_of(work, struct bq24190_dev_info, extcon_work.work);
> -       int error, iinlim = 0;
> -       u8 v;
> -
> -       error = pm_runtime_get_sync(bdi->dev);
> -       if (error < 0) {
> -               dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);
> -               pm_runtime_put_noidle(bdi->dev);
> -               return;
> -       }
> -
> -       if      (extcon_get_state(bdi->extcon, EXTCON_CHG_USB_SDP) == 1)
> -               iinlim =  500000;
> -       else if (extcon_get_state(bdi->extcon, EXTCON_CHG_USB_CDP) == 1 ||
> -                extcon_get_state(bdi->extcon, EXTCON_CHG_USB_ACA) == 1)
> -               iinlim = 1500000;
> -       else if (extcon_get_state(bdi->extcon, EXTCON_CHG_USB_DCP) == 1)
> -               iinlim = 2000000;
> -
> -       if (iinlim) {
> -               error = bq24190_set_field_val(bdi, BQ24190_REG_ISC,
> -                                             BQ24190_REG_ISC_IINLIM_MASK,
> -                                             BQ24190_REG_ISC_IINLIM_SHIFT,
> -                                             bq24190_isc_iinlim_values,
> -                                             ARRAY_SIZE(bq24190_isc_iinlim_values),
> -                                             iinlim);
> -               if (error < 0)
> -                       dev_err(bdi->dev, "Can't set IINLIM: %d\n", error);
> -       }
> -
> -       /* if no charger found and in USB host mode, set OTG 5V boost, else normal */
> -       if (!iinlim && extcon_get_state(bdi->extcon, EXTCON_USB_HOST) == 1)
> -               v = BQ24190_REG_POC_CHG_CONFIG_OTG;
> -       else
> -               v = BQ24190_REG_POC_CHG_CONFIG_CHARGE;
> -
> -       error = bq24190_write_mask(bdi, BQ24190_REG_POC,
> -                                  BQ24190_REG_POC_CHG_CONFIG_MASK,
> -                                  BQ24190_REG_POC_CHG_CONFIG_SHIFT,
> -                                  v);
> -       if (error < 0)
> -               dev_err(bdi->dev, "Can't set CHG_CONFIG: %d\n", error);
> -
> -       pm_runtime_mark_last_busy(bdi->dev);
> -       pm_runtime_put_autosuspend(bdi->dev);
> -}
> -
> -static int bq24190_extcon_event(struct notifier_block *nb, unsigned long event,
> -                               void *param)
> -{
> -       struct bq24190_dev_info *bdi =
> -               container_of(nb, struct bq24190_dev_info, extcon_nb);
> -
> -       /*
> -        * The Power-Good detection may take up to 220ms, sometimes
> -        * the external charger detection is quicker, and the bq24190 will
> -        * reset to iinlim based on its own charger detection (which is not
> -        * hooked up when using external charger detection) resulting in
> -        * a too low default 500mA iinlim. Delay applying the extcon value
> -        * for 300ms to avoid this.
> -        */
> -       queue_delayed_work(system_wq, &bdi->extcon_work, msecs_to_jiffies(300));
> -
> -       return NOTIFY_OK;
> -}
> -
>  static int bq24190_hw_init(struct bq24190_dev_info *bdi)
>  {
>         u8 v;
> @@ -1636,7 +1563,6 @@ static int bq24190_probe(struct i2c_client *client,
>         struct device *dev = &client->dev;
>         struct power_supply_config charger_cfg = {}, battery_cfg = {};
>         struct bq24190_dev_info *bdi;
> -       const char *name;
>         int ret;
>
>         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
> @@ -1668,25 +1594,6 @@ static int bq24190_probe(struct i2c_client *client,
>                 device_property_read_bool(dev,
>                                           "input-current-limit-from-supplier");
>
> -       /*
> -        * Devicetree platforms should get extcon via phandle (not yet supported).
> -        * On ACPI platforms, extcon clients may invoke us with:
> -        * struct property_entry pe[] =
> -        *   { PROPERTY_ENTRY_STRING("extcon-name", client_name), ... };
> -        * struct i2c_board_info bi =
> -        *   { .type = "bq24190", .addr = 0x6b, .properties = pe, .irq = irq };
> -        * struct i2c_adapter ad = { ... };
> -        * i2c_add_adapter(&ad);
> -        * i2c_new_device(&ad, &bi);
> -        */

Maybe we should keep a variation of the above comment, documenting how
we're invoked by another driver, and the dev props it sets for us.

> -       if (device_property_read_string(dev, "extcon-name", &name) == 0) {
> -               bdi->extcon = extcon_get_extcon_dev(name);
> -               if (!bdi->extcon)
> -                       return -EPROBE_DEFER;
> -
> -               dev_info(bdi->dev, "using extcon device %s\n", name);
> -       }
> -
>         pm_runtime_enable(dev);
>         pm_runtime_use_autosuspend(dev);
>         pm_runtime_set_autosuspend_delay(dev, 600);
> @@ -1747,20 +1654,6 @@ static int bq24190_probe(struct i2c_client *client,
>                 goto out_sysfs;
>         }
>
> -       if (bdi->extcon) {
> -               INIT_DELAYED_WORK(&bdi->extcon_work, bq24190_extcon_work);
> -               bdi->extcon_nb.notifier_call = bq24190_extcon_event;
> -               ret = devm_extcon_register_notifier_all(dev, bdi->extcon,
> -                                                       &bdi->extcon_nb);
> -               if (ret) {
> -                       dev_err(dev, "Can't register extcon\n");
> -                       goto out_sysfs;
> -               }
> -
> -               /* Sync initial cable state */
> -               queue_delayed_work(system_wq, &bdi->extcon_work, 0);
> -       }
> -
>         enable_irq_wake(client->irq);
>
>         pm_runtime_mark_last_busy(dev);
> --
> 2.13.3
>
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