From: Krzysztof Kozlowski <krzk@kernel.org>
To: Matheus Castello <matheus@castello.eng.br>
Cc: sre@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com,
cw00.choi@samsung.com, b.zolnierkie@samsung.com,
lee.jones@linaro.org, linux-pm@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 3/4] power: supply: max17040: Config alert SOC low level threshold from FDT
Date: Fri, 1 Nov 2019 16:27:55 +0100 [thread overview]
Message-ID: <20191101152755.GC28931@pi3> (raw)
In-Reply-To: <20191031184134.30621-4-matheus@castello.eng.br>
On Thu, Oct 31, 2019 at 03:41:33PM -0300, Matheus Castello wrote:
> 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-low-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 | 88 +++++++++++++++++++++----
> 1 file changed, 74 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
> index 75459f76d02c..802575342c72 100644
> --- a/drivers/power/supply/max17040_battery.c
> +++ b/drivers/power/supply/max17040_battery.c
> @@ -29,6 +29,9 @@
> #define MAX17040_DELAY 1000
> #define MAX17040_BATTERY_FULL 95
>
> +#define MAX17040_ATHD_MASK 0xFFC0
> +#define MAX17040_ATHD_DEFAULT_POWER_UP 4
> +
> struct max17040_chip {
> struct i2c_client *client;
> struct delayed_work work;
> @@ -43,6 +46,8 @@ struct max17040_chip {
> int soc;
> /* State Of Charge */
> int status;
> + /* Low alert threshold from 32% to 1% of the State of Charge */
> + u32 low_soc_alert_threshold;
> };
>
> static int max17040_get_property(struct power_supply *psy,
> @@ -99,6 +104,22 @@ static void max17040_reset(struct i2c_client *client)
> max17040_write_reg(client, MAX17040_CMD, 0x0054);
> }
>
> +static int max17040_set_low_soc_threshold_alert(struct i2c_client *client,
> + u32 level)
> +{
> + int ret;
> + u16 data;
> +
> + level = 32 - level;
> + data = max17040_read_reg(client, MAX17040_RCOMP);
> + /* clear the alrt bit and set LSb 5 bits */
> + data &= MAX17040_ATHD_MASK;
> + data |= level;
> + ret = max17040_write_reg(client, MAX17040_RCOMP, data);
> +
> + return ret;
> +}
> +
> static void max17040_get_vcell(struct i2c_client *client)
> {
> struct max17040_chip *chip = i2c_get_clientdata(client);
> @@ -115,7 +136,6 @@ static void max17040_get_soc(struct i2c_client *client)
> u16 soc;
>
> soc = max17040_read_reg(client, MAX17040_SOC);
> -
> chip->soc = (soc >> 8);
> }
>
> @@ -161,6 +181,24 @@ static void max17040_get_status(struct i2c_client *client)
> chip->status = POWER_SUPPLY_STATUS_FULL;
> }
>
> +static int max17040_get_of_data(struct max17040_chip *chip)
> +{
> + struct device *dev = &chip->client->dev;
> + struct device_node *np = dev->of_node;
> + int ret = 0;
> +
> + if (of_property_read_u32(np, "maxim,alert-low-soc-level",
> + &chip->low_soc_alert_threshold)) {
Please align the line break with line above. checkpatch --strict might
give you hints about this.
> + chip->low_soc_alert_threshold = MAX17040_ATHD_DEFAULT_POWER_UP;
> + /* check if low_soc_alert_threshold is between 1% and 32% */
The comment looks misleading here, like it belongs to previous block.
Maybe put it inside else if {} block?
> + } else if (chip->low_soc_alert_threshold <= 0 ||
> + chip->low_soc_alert_threshold >= 33){
Missing space before {.
> + ret = -EINVAL;
> + }
> +
> + return ret;
> +}
> +
> static void max17040_check_changes(struct i2c_client *client)
> {
> max17040_get_vcell(client);
> @@ -192,6 +230,10 @@ static irqreturn_t max17040_thread_handler(int id, void *dev)
> /* send uevent */
> power_supply_changed(chip->battery);
>
> + /* reset alert bit */
> + max17040_set_low_soc_threshold_alert(client,
> + chip->low_soc_alert_threshold);
Unless the continuation exceeds 80 character limit, please align it with
previous line.
> +
> return IRQ_HANDLED;
> }
>
> @@ -216,6 +258,7 @@ static int max17040_probe(struct i2c_client *client,
> struct i2c_adapter *adapter = client->adapter;
> struct power_supply_config psy_cfg = {};
> struct max17040_chip *chip;
> + int ret;
>
> if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
> return -EIO;
> @@ -226,6 +269,12 @@ static int max17040_probe(struct i2c_client *client,
>
> chip->client = client;
> chip->pdata = client->dev.platform_data;
> + ret = max17040_get_of_data(chip);
> + if (ret) {
> + dev_err(&client->dev,
> + "failed: low SOC alert OF data out of bounds\n");
> + return ret;
> + }
>
> i2c_set_clientdata(client, chip);
> psy_cfg.drv_data = chip;
> @@ -242,20 +291,31 @@ static int max17040_probe(struct i2c_client *client,
>
> /* check interrupt */
> if (client->irq) {
> - int ret;
> - unsigned int flags;
> -
> - dev_info(&client->dev, "IRQ: enabled\n");
> - flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
> - ret = devm_request_threaded_irq(&client->dev, client->irq, NULL,
> - max17040_thread_handler, flags,
> - chip->battery->desc->name,
> - chip);
> -
> - if (ret) {
> - client->irq = 0;
> + if (of_device_is_compatible(client->dev.of_node,
> + "maxim,max77836-battery")) {
Alignment.
> + ret = max17040_set_low_soc_threshold_alert(client,
> + chip->low_soc_alert_threshold);
Ditto.
> + if (ret) {
> + dev_err(&client->dev,
> + "Failed to set low SOC alert: err %d\n",
> + ret);
> + return ret;
> + }
> +
> + dev_info(&client->dev, "IRQ: enabled\n");
> + ret = devm_request_threaded_irq(&client->dev,
> + client->irq, NULL, max17040_thread_handler,
> + (client->flags | IRQF_ONESHOT),
This looks unrelated. Befor ethis were IRQF_TRIGGER_FALLING |
IRQF_ONESHOT, now you use client->flags. There is no reason why this
commit should change it.
> + chip->battery->desc->name, chip);
This breaks alignment which was here before.
Best regards,
Krzysztof
> +
> + if (ret) {
> + client->irq = 0;
> + dev_warn(&client->dev,
> + "Failed to get IRQ err %d\n", ret);
> + }
> + } else {
> dev_warn(&client->dev,
> - "Failed to get IRQ err %d\n", ret);
> + "Device not compatible for IRQ");
> }
> }
>
> --
> 2.24.0.rc2
>
next prev parent reply other threads:[~2019-11-01 15:28 UTC|newest]
Thread overview: 71+ 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 ` [PATCH 2/4] power: supply: max17040: Config alert SOC low level threshold from FDT Matheus Castello
2018-07-25 10:42 ` 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 ` [PATCH v2 1/4] power: supply: max17040: Add IRQ handler for low SOC alert Matheus Castello
2019-04-15 7:10 ` Krzysztof Kozlowski
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 7:13 ` Krzysztof Kozlowski
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 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 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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191101152755.GC28931@pi3 \
--to=krzk@kernel.org \
--cc=b.zolnierkie@samsung.com \
--cc=cw00.choi@samsung.com \
--cc=devicetree@vger.kernel.org \
--cc=lee.jones@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=matheus@castello.eng.br \
--cc=robh+dt@kernel.org \
--cc=sre@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).