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From: Tony Lindgren <tony@atomide.com>
To: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org, linux-omap@vger.kernel.org,
	Arthur Demchenkov <spinal.by@gmail.com>,
	Carl Philipp Klemm <philipp@uvos.xyz>,
	Merlijn Wajer <merlijn@wizzup.org>, Pavel Machek <pavel@ucw.cz>
Subject: [PATCH 08/15] power: supply: cpcap-charger: Simplify things with enable and disable
Date: Sun, 10 Jan 2021 21:53:56 +0200	[thread overview]
Message-ID: <20210110195403.13758-9-tony@atomide.com> (raw)
In-Reply-To: <20210110195403.13758-1-tony@atomide.com>

Let's turn cpcap_charger_set_state() into separate cpcap_charger_enable()
and cpcap_charger_disable() to simplify things, and to allow managing
status separately. This can be then used for the follow-up patches to
make battery full status behave a bit nicer.

Cc: Arthur Demchenkov <spinal.by@gmail.com>
Cc: Carl Philipp Klemm <philipp@uvos.xyz>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/power/supply/cpcap-charger.c | 81 ++++++++++++++--------------
 1 file changed, 39 insertions(+), 42 deletions(-)

diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c
--- a/drivers/power/supply/cpcap-charger.c
+++ b/drivers/power/supply/cpcap-charger.c
@@ -418,32 +418,30 @@ static void cpcap_charger_update_state(struct cpcap_charger_ddata *ddata,
 	dev_dbg(ddata->dev, "state: %s\n", status);
 }
 
-static int cpcap_charger_set_state(struct cpcap_charger_ddata *ddata,
-				   int max_voltage, int charge_current,
-				   int trickle_current)
+static int cpcap_charger_disable(struct cpcap_charger_ddata *ddata)
 {
-	bool enable;
 	int error;
 
-	enable = (charge_current || trickle_current);
-	dev_dbg(ddata->dev, "%s enable: %i\n", __func__, enable);
+	error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff,
+				   CPCAP_REG_CRM_FET_OVRD |
+				   CPCAP_REG_CRM_FET_CTRL);
+	if (error)
+		dev_err(ddata->dev, "%s failed with %i\n", __func__, error);
 
-	if (!enable) {
-		error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM,
-					   0x3fff,
-					   CPCAP_REG_CRM_FET_OVRD |
-					   CPCAP_REG_CRM_FET_CTRL);
-		if (error) {
-			cpcap_charger_update_state(ddata,
-						   POWER_SUPPLY_STATUS_UNKNOWN);
-			goto out_err;
-		}
+	return error;
+}
 
-		cpcap_charger_update_state(ddata,
-					   POWER_SUPPLY_STATUS_DISCHARGING);
+static int cpcap_charger_enable(struct cpcap_charger_ddata *ddata,
+				int max_voltage, int charge_current,
+				int trickle_current)
+{
+	int error;
 
-		return 0;
-	}
+	if (!max_voltage || !charge_current)
+		return -EINVAL;
+
+	dev_dbg(ddata->dev, "enable: %i %i %i\n",
+		max_voltage, charge_current, trickle_current);
 
 	error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff,
 				   CPCAP_REG_CRM_CHRG_LED_EN |
@@ -452,19 +450,8 @@ static int cpcap_charger_set_state(struct cpcap_charger_ddata *ddata,
 				   CPCAP_REG_CRM_FET_CTRL |
 				   max_voltage |
 				   charge_current);
-	if (error) {
-		cpcap_charger_update_state(ddata,
-					   POWER_SUPPLY_STATUS_UNKNOWN);
-		goto out_err;
-	}
-
-	cpcap_charger_update_state(ddata,
-				   POWER_SUPPLY_STATUS_CHARGING);
-
-	return 0;
-
-out_err:
-	dev_err(ddata->dev, "%s failed with %i\n", __func__, error);
+	if (error)
+		dev_err(ddata->dev, "%s failed with %i\n", __func__, error);
 
 	return error;
 }
@@ -506,10 +493,13 @@ static void cpcap_charger_vbus_work(struct work_struct *work)
 		cpcap_charger_set_cable_path(ddata, false);
 		cpcap_charger_set_inductive_path(ddata, false);
 
-		error = cpcap_charger_set_state(ddata, 0, 0, 0);
+		error = cpcap_charger_disable(ddata);
 		if (error)
 			goto out_err;
 
+		cpcap_charger_update_state(ddata,
+					   POWER_SUPPLY_STATUS_DISCHARGING);
+
 		error = regmap_update_bits(ddata->reg, CPCAP_REG_VUSBC,
 					   CPCAP_BIT_VBUS_SWITCH,
 					   CPCAP_BIT_VBUS_SWITCH);
@@ -540,6 +530,7 @@ static void cpcap_charger_vbus_work(struct work_struct *work)
 	return;
 
 out_err:
+	cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN);
 	dev_err(ddata->dev, "%s could not %s vbus: %i\n", __func__,
 		ddata->vbus_enabled ? "enable" : "disable", error);
 }
@@ -622,9 +613,11 @@ static void cpcap_charger_disconnect(struct cpcap_charger_ddata *ddata,
 {
 	int error;
 
-	error = cpcap_charger_set_state(ddata, 0, 0, 0);
-	if (error)
+	error = cpcap_charger_disable(ddata);
+	if (error) {
+		cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN);
 		return;
+	}
 
 	cpcap_charger_update_state(ddata, state);
 	power_supply_changed(ddata->usb);
@@ -700,15 +693,15 @@ static void cpcap_usb_detect(struct work_struct *work)
 
 		ichrg = cpcap_charger_current_to_regval(max_current);
 		vchrg = cpcap_charger_voltage_to_regval(ddata->voltage);
-		error = cpcap_charger_set_state(ddata,
-						CPCAP_REG_CRM_VCHRG(vchrg),
-						ichrg, 0);
+		error = cpcap_charger_enable(ddata,
+					     CPCAP_REG_CRM_VCHRG(vchrg),
+					     ichrg, 0);
 		if (error)
 			goto out_err;
 		cpcap_charger_update_state(ddata,
 					   POWER_SUPPLY_STATUS_CHARGING);
 	} else {
-		error = cpcap_charger_set_state(ddata, 0, 0, 0);
+		error = cpcap_charger_disable(ddata);
 		if (error)
 			goto out_err;
 		cpcap_charger_update_state(ddata,
@@ -719,6 +712,7 @@ static void cpcap_usb_detect(struct work_struct *work)
 	return;
 
 out_err:
+	cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN);
 	dev_err(ddata->dev, "%s failed with %i\n", __func__, error);
 }
 
@@ -936,10 +930,13 @@ static void cpcap_charger_shutdown(struct platform_device *pdev)
 		dev_warn(ddata->dev, "could not clear USB comparator: %i\n",
 			 error);
 
-	error = cpcap_charger_set_state(ddata, 0, 0, 0);
-	if (error)
+	error = cpcap_charger_disable(ddata);
+	if (error) {
+		cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN);
 		dev_warn(ddata->dev, "could not clear charger: %i\n",
 			 error);
+	}
+	cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_DISCHARGING);
 	cancel_delayed_work_sync(&ddata->vbus_work);
 	cancel_delayed_work_sync(&ddata->detect_work);
 }
-- 
2.30.0

  parent reply	other threads:[~2021-01-10 19:55 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-10 19:53 [PATCH 00/15] Updates for cpcap charger and battery Tony Lindgren
2021-01-10 19:53 ` [PATCH 01/15] power: supply: cpcap-charger: Fix missing power_supply_put() Tony Lindgren
2021-01-10 19:53 ` [PATCH 02/15] power: supply: cpcap-battery: " Tony Lindgren
2021-01-10 19:53 ` [PATCH 03/15] power: supply: cpcap-charger: Fix flakey reboot with charger connected Tony Lindgren
2021-01-10 19:53 ` [PATCH 04/15] power: supply: cpcap-charger: Make VBUS already provided debug only Tony Lindgren
2021-01-10 19:53 ` [PATCH 05/15] power: supply: cpcap-charger: Use standard enumeration Tony Lindgren
2021-01-10 19:53 ` [PATCH 06/15] power: supply: cpcap-charger: Limiting charge current on Droid 4 Tony Lindgren
2021-01-10 19:53 ` [PATCH 07/15] power: supply: cpcap-charger: Drop internal state and use generic stats Tony Lindgren
2021-01-10 19:53 ` Tony Lindgren [this message]
2021-01-10 19:53 ` [PATCH 09/15] power: supply: cpcap-charger: Provide state updates for battery from charger Tony Lindgren
2021-01-10 19:53 ` [PATCH 10/15] power: supply: cpcap-battery: Use charger status for battery full detection Tony Lindgren
2021-01-10 19:53 ` [PATCH 11/15] power: supply: cpcap-battery: Add charge_full property Tony Lindgren
2021-01-10 19:54 ` [PATCH 12/15] power: supply: cpcap-battery: Keep track of state for capacity reporting Tony Lindgren
2021-01-10 19:54 ` [PATCH 13/15] power: supply: cpcap-battery: Implement " Tony Lindgren
2021-01-10 19:54 ` [PATCH 14/15] power: supply: cpcap-battery: Add charge_now property Tony Lindgren
2021-01-10 19:54 ` [PATCH 15/15] power: supply: cpcap-battery: Fix typo Tony Lindgren
2021-01-14 22:37 ` [PATCH 00/15] Updates for cpcap charger and battery Sebastian Reichel

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