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

From: Hans de Goede
Date: Tue Aug 08 2017 - 05:12:54 EST


Hi,

On 08-08-17 10:27, Liam Breck wrote:
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.

Ok, I will move this comment to one of the other props for v2.

Regards,

Hans