From: Matheus Castello <matheus@castello.eng.br>
To: sre@kernel.org
Cc: robh+dt@kernel.org, mark.rutland@arm.com,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Matheus Castello <matheus@castello.eng.br>
Subject: [PATCH 2/4] power: supply: max17040: Config alert SOC low level threshold from FDT
Date: Mon, 23 Jul 2018 00:08:14 -0400 [thread overview]
Message-ID: <20180723040816.19455-3-matheus@castello.eng.br> (raw)
In-Reply-To: <20180723040816.19455-1-matheus@castello.eng.br>
For configuration of fuel gauge alert for a low level state of charge
interrupt we add a function to config level threshold and a device tree
binding property to set it in flatned device tree node.
Now we can use "maxim,alert-soc-level" property with the values from
1 up to 32 to configure alert interrupt threshold.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
---
drivers/power/supply/max17040_battery.c | 36 +++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index 6e54e58814a9..3efa52d32b44 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -47,6 +47,8 @@ struct max17040_chip {
int soc;
/* State Of Charge */
int status;
+ /* Alert threshold */
+ int alert_threshold;
};
static int max17040_get_property(struct power_supply *psy,
@@ -123,6 +125,28 @@ static void max17040_get_soc(struct i2c_client *client)
chip->soc = (soc >> 8);
}
+static int max17040_set_soc_threshold(struct i2c_client *client, u8 level)
+{
+ int ret;
+ u16 data;
+
+ /* check if level is between 1% and 32% */
+ if (level > 0 && level < 33) {
+ /* alert threshold use LSb 5 bits from RCOMP */
+ /* two's-complements form: 00000 = 32% and 11111 = 1% */
+ level = 32 - level;
+ data = max17040_read_reg(client, MAX17040_RCOMP);
+ data &= 0xFFE0;
+ data |= level;
+ max17040_write_reg(client, MAX17040_RCOMP, data);
+ ret = 0;
+ } else {
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
static void max17040_get_version(struct i2c_client *client)
{
u16 version;
@@ -165,6 +189,16 @@ static void max17040_get_status(struct i2c_client *client)
chip->status = POWER_SUPPLY_STATUS_FULL;
}
+static void max17040_get_of_data(struct max17040_chip *chip)
+{
+ struct device *dev = &chip->client->dev;
+ struct device_node *np = dev->of_node;
+
+ if (of_property_read_s32(np, "maxim,alert-soc-level",
+ &chip->alert_threshold))
+ chip->alert_threshold = 4;
+}
+
static void max17040_work(struct work_struct *work)
{
struct max17040_chip *chip;
@@ -231,6 +265,7 @@ static int max17040_probe(struct i2c_client *client,
chip->client = client;
chip->pdata = client->dev.platform_data;
+ max17040_get_of_data(chip);
i2c_set_clientdata(client, chip);
psy_cfg.drv_data = chip;
@@ -262,6 +297,7 @@ static int max17040_probe(struct i2c_client *client,
max17040_reset(client);
max17040_get_version(client);
+ max17040_set_soc_threshold(client, chip->alert_threshold);
INIT_DEFERRABLE_WORK(&chip->work, max17040_work);
queue_delayed_work(system_power_efficient_wq, &chip->work,
--
2.13.3
next prev parent reply other threads:[~2018-07-23 4:08 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-23 4:08 [PATCH 0/4] power: supply: MAX17040: Add IRQ for low level and alert SOC changes Matheus Castello
2018-07-23 4:08 ` [PATCH 1/4] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2018-07-25 10:27 ` Krzysztof Kozlowski
2018-07-23 4:08 ` Matheus Castello [this message]
2018-07-25 10:42 ` [PATCH 2/4] power: supply: max17040: Config alert SOC low level threshold from FDT Krzysztof Kozlowski
2018-07-23 4:08 ` [PATCH 3/4] dt-bindings: power: supply: Max17040: Add low level SOC alert threshold Matheus Castello
2018-07-25 10:45 ` Krzysztof Kozlowski
2018-07-23 4:08 ` [PATCH 4/4] power: supply: max17040: Send uevent in SOC changes Matheus Castello
2018-07-25 10:52 ` Krzysztof Kozlowski
2018-09-16 11:45 ` [PATCH 0/4] power: supply: MAX17040: Add IRQ for low level and alert " Sebastian Reichel
2018-09-17 11:32 ` Krzysztof Kozlowski
2018-09-18 3:45 ` Matheus Castello
2019-04-15 1:26 ` [PATCH v2 " Matheus Castello
2019-04-15 1:26 ` Matheus Castello
2019-04-15 1:26 ` [PATCH v2 1/4] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2019-04-15 1:26 ` Matheus Castello
2019-04-15 7:10 ` Krzysztof Kozlowski
2019-04-15 7:10 ` Krzysztof Kozlowski
2019-04-19 18:12 ` Matheus Castello
2019-04-19 18:12 ` Matheus Castello
2019-04-15 1:26 ` [PATCH v2 2/4] dt-bindings: power: supply: Max17040: Add low level SOC alert threshold Matheus Castello
2019-04-15 1:26 ` Matheus Castello
2019-04-15 7:13 ` Krzysztof Kozlowski
2019-04-15 7:13 ` Krzysztof Kozlowski
2019-04-29 22:13 ` Rob Herring
2019-04-29 22:13 ` Rob Herring
2019-05-26 23:13 ` Matheus Castello
2019-04-15 1:26 ` [PATCH v2 3/4] power: supply: max17040: Config alert SOC low level threshold from FDT Matheus Castello
2019-04-15 1:26 ` Matheus Castello
2019-04-15 7:27 ` Krzysztof Kozlowski
2019-04-15 7:27 ` Krzysztof Kozlowski
2019-04-15 1:26 ` [PATCH v2 4/4] power: supply: max17040: Send uevent in SOC changes Matheus Castello
2019-04-15 1:26 ` Matheus Castello
2019-04-15 7:30 ` Krzysztof Kozlowski
2019-04-15 7:30 ` Krzysztof Kozlowski
2019-05-27 2:22 ` [PATCH v3 0/5] power: supply: MAX17040: Add IRQ for low level and alert " Matheus Castello
2019-05-27 2:22 ` [PATCH v3 1/5] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2019-05-29 14:26 ` Krzysztof Kozlowski
2019-05-27 2:22 ` [PATCH v3 2/5] dt-bindings: power: supply: Max17040: Add low level SOC alert threshold Matheus Castello
2019-05-29 14:40 ` Krzysztof Kozlowski
2019-05-29 14:57 ` Krzysztof Kozlowski
2019-06-02 21:38 ` Matheus Castello
2019-06-05 12:04 ` Krzysztof Kozlowski
2019-05-27 2:22 ` [PATCH v3 3/5] power: supply: max17040: Config alert SOC low level threshold from FDT Matheus Castello
2019-05-29 14:46 ` Krzysztof Kozlowski
2019-06-02 22:26 ` Matheus Castello
2019-06-05 12:05 ` Krzysztof Kozlowski
2019-05-27 2:22 ` [PATCH v3 4/5] power: supply: max17040: Clear ALRT bit when the SOC are above threshold Matheus Castello
2019-05-29 14:54 ` Krzysztof Kozlowski
2019-05-27 2:22 ` [PATCH v3 5/5] power: supply: max17040: Send uevent in SOC and status change Matheus Castello
2019-05-29 15:00 ` Krzysztof Kozlowski
2019-10-31 18:41 ` [PATCH v4 0/4] power: supply: MAX17040: Add IRQ for low level and alert SOC changes Matheus Castello
2019-10-31 18:41 ` [PATCH v4 1/4] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2019-11-01 15:08 ` Krzysztof Kozlowski
2019-10-31 18:41 ` [PATCH v4 2/4] dt-bindings: power: supply: Max17040: Add low level SOC alert threshold Matheus Castello
2019-11-01 15:10 ` Krzysztof Kozlowski
2019-11-05 1:58 ` Rob Herring
2019-11-05 5:42 ` [PATCH v5 0/5] power: supply: MAX17040: Add IRQ for low level and alert SOC changes Matheus Castello
2019-11-05 5:42 ` [PATCH v5 1/5] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2019-11-05 5:42 ` [PATCH v5 2/5] dt-bindings: power: supply: Max17040: Add DT bindings for max17040 fuel gauge Matheus Castello
2019-11-05 5:42 ` [PATCH v5 3/5] devicetree: mfd: max14577: Add reference to max14040_battery.txt descriptions Matheus Castello
2019-11-05 5:42 ` [PATCH v5 4/5] power: supply: max17040: Config alert SOC low level threshold from FDT Matheus Castello
2019-11-05 9:59 ` Krzysztof Kozlowski
2019-11-07 3:17 ` [PATCH v6 0/5] power: supply: MAX17040: Add IRQ for low level and alert SOC changes Matheus Castello
2019-11-07 3:17 ` [PATCH v6 1/5] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2019-11-07 3:17 ` [PATCH v6 2/5] dt-bindings: power: supply: Max17040: Add DT bindings for max17040 fuel gauge Matheus Castello
2019-11-14 0:53 ` Rob Herring
2019-11-07 3:17 ` [PATCH v6 3/5] devicetree: mfd: max14577: Add reference to max14040_battery.txt descriptions Matheus Castello
2019-11-11 10:09 ` Lee Jones
2019-11-14 0:54 ` Rob Herring
2019-11-07 3:17 ` [PATCH v6 4/5] power: supply: max17040: Config alert SOC low level threshold from FDT Matheus Castello
2019-11-07 3:17 ` [PATCH v6 5/5] power: supply: max17040: Send uevent in SOC and status change Matheus Castello
2019-11-11 9:59 ` [PATCH v6 0/5] power: supply: MAX17040: Add IRQ for low level and alert SOC changes Lee Jones
2019-11-05 5:42 ` [PATCH v5 5/5] power: supply: max17040: Send uevent in SOC and status change Matheus Castello
2019-10-31 18:41 ` [PATCH v4 3/4] power: supply: max17040: Config alert SOC low level threshold from FDT Matheus Castello
2019-11-01 15:27 ` Krzysztof Kozlowski
2019-11-01 16:52 ` Matheus Castello
2019-11-02 18:12 ` Matheus Castello
2019-11-04 11:04 ` Krzysztof Kozlowski
2019-11-04 10:59 ` Krzysztof Kozlowski
2019-10-31 18:41 ` [PATCH v4 4/4] power: supply: max17040: Send uevent in SOC and status change Matheus Castello
2019-11-01 15:30 ` Krzysztof Kozlowski
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