* [PATCH v2] platform/chrome: wilco_ec: Add version sysfs entries
@ 2019-06-03 18:16 Raul E Rangel
2019-06-03 20:40 ` Enric Balletbo i Serra
0 siblings, 1 reply; 4+ messages in thread
From: Raul E Rangel @ 2019-06-03 18:16 UTC (permalink / raw)
To: enric.balletbo, ncrews; +Cc: Raul E Rangel, linux-kernel, Benson Leung
Add the ability to extract version information from the EC.
Example Output:
$ cd /sys/bus/platform/devices/GOOG000C:00
$ tail build_date build_revision version model_number
==> build_date <==
04/25/19
==> build_revision <==
d2592cae0
==> version <==
00.00.14
==> model_number <==
08B6
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
---
This patch is rebased on chromeos-platform/for-next. It was originally
developed on the chromiumos 4.19 kernel which has the following patch
applied: https://lore.kernel.org/patchwork/patch/1062995/. That patch is
not currently upstream.
Changes in v2:
- Removed version directory
- Renamed label to version
- Sorted documentation
.../ABI/testing/sysfs-platform-wilco-ec | 31 ++++++++
drivers/platform/chrome/wilco_ec/sysfs.c | 79 +++++++++++++++++++
2 files changed, 110 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-platform-wilco-ec b/Documentation/ABI/testing/sysfs-platform-wilco-ec
index 8e5d6eee44db2..8827a734f9331 100644
--- a/Documentation/ABI/testing/sysfs-platform-wilco-ec
+++ b/Documentation/ABI/testing/sysfs-platform-wilco-ec
@@ -7,3 +7,34 @@ Description:
want to run their device headless or with a dock.
Input should be parseable by kstrtou8() to 0 or 1.
+
+What: /sys/bus/platform/devices/GOOG000C\:00/build_date
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller firmware build date.
+ Output will a MM/DD/YY string.
+
+What: /sys/bus/platform/devices/GOOG000C\:00/build_revision
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller build revision.
+ Output will a version string be similar to the example below:
+ d2592cae0
+
+What: /sys/bus/platform/devices/GOOG000C\:00/model_number
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller model number.
+ Output will a version string be similar to the example below:
+ 08B6
+
+What: /sys/bus/platform/devices/GOOG000C\:00/version
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller firmware version.
+ The format of the string is x.y.z. Where x is major, y is minor
+ and z is the build number. For example: 95.00.06
diff --git a/drivers/platform/chrome/wilco_ec/sysfs.c b/drivers/platform/chrome/wilco_ec/sysfs.c
index f84f0480460ae..3b86a21005d3e 100644
--- a/drivers/platform/chrome/wilco_ec/sysfs.c
+++ b/drivers/platform/chrome/wilco_ec/sysfs.c
@@ -23,6 +23,25 @@ struct boot_on_ac_request {
u8 reserved7;
} __packed;
+#define CMD_EC_INFO 0x38
+enum get_ec_info_op {
+ CMD_GET_EC_LABEL = 0,
+ CMD_GET_EC_REV = 1,
+ CMD_GET_EC_MODEL = 2,
+ CMD_GET_EC_BUILD_DATE = 3,
+};
+
+struct get_ec_info_req {
+ u8 cmd; /* Always CMD_EC_INFO */
+ u8 reserved;
+ u8 op; /* One of enum get_ec_info_op */
+} __packed;
+
+struct get_ec_info_resp {
+ u8 reserved[2];
+ char value[9]; /* __nonstring: might not be null terminated */
+} __packed;
+
static ssize_t boot_on_ac_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -57,8 +76,68 @@ static ssize_t boot_on_ac_store(struct device *dev,
static DEVICE_ATTR_WO(boot_on_ac);
+static ssize_t get_info(struct device *dev, char *buf, enum get_ec_info_op op)
+{
+ struct wilco_ec_device *ec = dev_get_drvdata(dev);
+ struct get_ec_info_req req = { .cmd = CMD_EC_INFO, .op = op };
+ struct get_ec_info_resp resp;
+ int ret;
+
+ struct wilco_ec_message msg = {
+ .type = WILCO_EC_MSG_LEGACY,
+ .request_data = &req,
+ .request_size = sizeof(req),
+ .response_data = &resp,
+ .response_size = sizeof(resp),
+ };
+
+ ret = wilco_ec_mailbox(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ return scnprintf(buf, PAGE_SIZE, "%.*s\n", (int)sizeof(resp.value),
+ (char *)&resp.value);
+}
+
+static ssize_t version_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_LABEL);
+}
+
+static DEVICE_ATTR_RO(version);
+
+static ssize_t build_revision_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_REV);
+}
+
+static DEVICE_ATTR_RO(build_revision);
+
+static ssize_t build_date_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_BUILD_DATE);
+}
+
+static DEVICE_ATTR_RO(build_date);
+
+static ssize_t model_number_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_MODEL);
+}
+
+static DEVICE_ATTR_RO(model_number);
+
+
static struct attribute *wilco_dev_attrs[] = {
&dev_attr_boot_on_ac.attr,
+ &dev_attr_build_date.attr,
+ &dev_attr_build_revision.attr,
+ &dev_attr_model_number.attr,
+ &dev_attr_version.attr,
NULL,
};
--
2.22.0.rc1.311.g5d7573a151-goog
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] platform/chrome: wilco_ec: Add version sysfs entries
2019-06-03 18:16 [PATCH v2] platform/chrome: wilco_ec: Add version sysfs entries Raul E Rangel
@ 2019-06-03 20:40 ` Enric Balletbo i Serra
2019-06-05 15:12 ` Nick Crews
0 siblings, 1 reply; 4+ messages in thread
From: Enric Balletbo i Serra @ 2019-06-03 20:40 UTC (permalink / raw)
To: Raul E Rangel, ncrews; +Cc: linux-kernel, Benson Leung
Nick,
On 3/6/19 20:16, Raul E Rangel wrote:
> Add the ability to extract version information from the EC.
>
> Example Output:
> $ cd /sys/bus/platform/devices/GOOG000C:00
> $ tail build_date build_revision version model_number
> ==> build_date <==
> 04/25/19
>
> ==> build_revision <==
> d2592cae0
>
> ==> version <==
> 00.00.14
>
> ==> model_number <==
> 08B6
>
> Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Can I get your rb here?
Thanks,
Enric
> ---
> This patch is rebased on chromeos-platform/for-next. It was originally
> developed on the chromiumos 4.19 kernel which has the following patch
> applied: https://lore.kernel.org/patchwork/patch/1062995/. That patch is
> not currently upstream.
>
> Changes in v2:
> - Removed version directory
> - Renamed label to version
> - Sorted documentation
>
> .../ABI/testing/sysfs-platform-wilco-ec | 31 ++++++++
> drivers/platform/chrome/wilco_ec/sysfs.c | 79 +++++++++++++++++++
> 2 files changed, 110 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-platform-wilco-ec b/Documentation/ABI/testing/sysfs-platform-wilco-ec
> index 8e5d6eee44db2..8827a734f9331 100644
> --- a/Documentation/ABI/testing/sysfs-platform-wilco-ec
> +++ b/Documentation/ABI/testing/sysfs-platform-wilco-ec
> @@ -7,3 +7,34 @@ Description:
> want to run their device headless or with a dock.
>
> Input should be parseable by kstrtou8() to 0 or 1.
> +
> +What: /sys/bus/platform/devices/GOOG000C\:00/build_date
> +Date: May 2019
> +KernelVersion: 5.3
> +Description:
> + Display Wilco Embedded Controller firmware build date.
> + Output will a MM/DD/YY string.
> +
> +What: /sys/bus/platform/devices/GOOG000C\:00/build_revision
> +Date: May 2019
> +KernelVersion: 5.3
> +Description:
> + Display Wilco Embedded Controller build revision.
> + Output will a version string be similar to the example below:
> + d2592cae0
> +
> +What: /sys/bus/platform/devices/GOOG000C\:00/model_number
> +Date: May 2019
> +KernelVersion: 5.3
> +Description:
> + Display Wilco Embedded Controller model number.
> + Output will a version string be similar to the example below:
> + 08B6
> +
> +What: /sys/bus/platform/devices/GOOG000C\:00/version
> +Date: May 2019
> +KernelVersion: 5.3
> +Description:
> + Display Wilco Embedded Controller firmware version.
> + The format of the string is x.y.z. Where x is major, y is minor
> + and z is the build number. For example: 95.00.06
> diff --git a/drivers/platform/chrome/wilco_ec/sysfs.c b/drivers/platform/chrome/wilco_ec/sysfs.c
> index f84f0480460ae..3b86a21005d3e 100644
> --- a/drivers/platform/chrome/wilco_ec/sysfs.c
> +++ b/drivers/platform/chrome/wilco_ec/sysfs.c
> @@ -23,6 +23,25 @@ struct boot_on_ac_request {
> u8 reserved7;
> } __packed;
>
> +#define CMD_EC_INFO 0x38
> +enum get_ec_info_op {
> + CMD_GET_EC_LABEL = 0,
> + CMD_GET_EC_REV = 1,
> + CMD_GET_EC_MODEL = 2,
> + CMD_GET_EC_BUILD_DATE = 3,
> +};
> +
> +struct get_ec_info_req {
> + u8 cmd; /* Always CMD_EC_INFO */
> + u8 reserved;
> + u8 op; /* One of enum get_ec_info_op */
> +} __packed;
> +
> +struct get_ec_info_resp {
> + u8 reserved[2];
> + char value[9]; /* __nonstring: might not be null terminated */
> +} __packed;
> +
> static ssize_t boot_on_ac_store(struct device *dev,
> struct device_attribute *attr,
> const char *buf, size_t count)
> @@ -57,8 +76,68 @@ static ssize_t boot_on_ac_store(struct device *dev,
>
> static DEVICE_ATTR_WO(boot_on_ac);
>
> +static ssize_t get_info(struct device *dev, char *buf, enum get_ec_info_op op)
> +{
> + struct wilco_ec_device *ec = dev_get_drvdata(dev);
> + struct get_ec_info_req req = { .cmd = CMD_EC_INFO, .op = op };
> + struct get_ec_info_resp resp;
> + int ret;
> +
> + struct wilco_ec_message msg = {
> + .type = WILCO_EC_MSG_LEGACY,
> + .request_data = &req,
> + .request_size = sizeof(req),
> + .response_data = &resp,
> + .response_size = sizeof(resp),
> + };
> +
> + ret = wilco_ec_mailbox(ec, &msg);
> + if (ret < 0)
> + return ret;
> +
> + return scnprintf(buf, PAGE_SIZE, "%.*s\n", (int)sizeof(resp.value),
> + (char *)&resp.value);
> +}
> +
> +static ssize_t version_show(struct device *dev, struct device_attribute *attr,
> + char *buf)
> +{
> + return get_info(dev, buf, CMD_GET_EC_LABEL);
> +}
> +
> +static DEVICE_ATTR_RO(version);
> +
> +static ssize_t build_revision_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + return get_info(dev, buf, CMD_GET_EC_REV);
> +}
> +
> +static DEVICE_ATTR_RO(build_revision);
> +
> +static ssize_t build_date_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + return get_info(dev, buf, CMD_GET_EC_BUILD_DATE);
> +}
> +
> +static DEVICE_ATTR_RO(build_date);
> +
> +static ssize_t model_number_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + return get_info(dev, buf, CMD_GET_EC_MODEL);
> +}
> +
> +static DEVICE_ATTR_RO(model_number);
> +
> +
> static struct attribute *wilco_dev_attrs[] = {
> &dev_attr_boot_on_ac.attr,
> + &dev_attr_build_date.attr,
> + &dev_attr_build_revision.attr,
> + &dev_attr_model_number.attr,
> + &dev_attr_version.attr,
> NULL,
> };
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] platform/chrome: wilco_ec: Add version sysfs entries
2019-06-03 20:40 ` Enric Balletbo i Serra
@ 2019-06-05 15:12 ` Nick Crews
2019-06-06 10:21 ` Enric Balletbo i Serra
0 siblings, 1 reply; 4+ messages in thread
From: Nick Crews @ 2019-06-05 15:12 UTC (permalink / raw)
To: Enric Balletbo i Serra; +Cc: Raul E Rangel, linux-kernel, Benson Leung
Thanks Raul and Enric, this looks good to me.
On Mon, Jun 3, 2019 at 2:40 PM Enric Balletbo i Serra
<enric.balletbo@collabora.com> wrote:
>
> Nick,
>
> On 3/6/19 20:16, Raul E Rangel wrote:
> > Add the ability to extract version information from the EC.
> >
> > Example Output:
> > $ cd /sys/bus/platform/devices/GOOG000C:00
> > $ tail build_date build_revision version model_number
> > ==> build_date <==
> > 04/25/19
> >
> > ==> build_revision <==
> > d2592cae0
> >
> > ==> version <==
> > 00.00.14
> >
> > ==> model_number <==
> > 08B6
> >
> > Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Nick Crews <ncrews@chromium.org>
>
> Can I get your rb here?
>
> Thanks,
> Enric
>
> > ---
> > This patch is rebased on chromeos-platform/for-next. It was originally
> > developed on the chromiumos 4.19 kernel which has the following patch
> > applied: https://lore.kernel.org/patchwork/patch/1062995/. That patch is
> > not currently upstream.
> >
> > Changes in v2:
> > - Removed version directory
> > - Renamed label to version
> > - Sorted documentation
> >
> > .../ABI/testing/sysfs-platform-wilco-ec | 31 ++++++++
> > drivers/platform/chrome/wilco_ec/sysfs.c | 79 +++++++++++++++++++
> > 2 files changed, 110 insertions(+)
> >
> > diff --git a/Documentation/ABI/testing/sysfs-platform-wilco-ec b/Documentation/ABI/testing/sysfs-platform-wilco-ec
> > index 8e5d6eee44db2..8827a734f9331 100644
> > --- a/Documentation/ABI/testing/sysfs-platform-wilco-ec
> > +++ b/Documentation/ABI/testing/sysfs-platform-wilco-ec
> > @@ -7,3 +7,34 @@ Description:
> > want to run their device headless or with a dock.
> >
> > Input should be parseable by kstrtou8() to 0 or 1.
> > +
> > +What: /sys/bus/platform/devices/GOOG000C\:00/build_date
> > +Date: May 2019
> > +KernelVersion: 5.3
> > +Description:
> > + Display Wilco Embedded Controller firmware build date.
> > + Output will a MM/DD/YY string.
> > +
> > +What: /sys/bus/platform/devices/GOOG000C\:00/build_revision
> > +Date: May 2019
> > +KernelVersion: 5.3
> > +Description:
> > + Display Wilco Embedded Controller build revision.
> > + Output will a version string be similar to the example below:
> > + d2592cae0
> > +
> > +What: /sys/bus/platform/devices/GOOG000C\:00/model_number
> > +Date: May 2019
> > +KernelVersion: 5.3
> > +Description:
> > + Display Wilco Embedded Controller model number.
> > + Output will a version string be similar to the example below:
> > + 08B6
> > +
> > +What: /sys/bus/platform/devices/GOOG000C\:00/version
> > +Date: May 2019
> > +KernelVersion: 5.3
> > +Description:
> > + Display Wilco Embedded Controller firmware version.
> > + The format of the string is x.y.z. Where x is major, y is minor
> > + and z is the build number. For example: 95.00.06
> > diff --git a/drivers/platform/chrome/wilco_ec/sysfs.c b/drivers/platform/chrome/wilco_ec/sysfs.c
> > index f84f0480460ae..3b86a21005d3e 100644
> > --- a/drivers/platform/chrome/wilco_ec/sysfs.c
> > +++ b/drivers/platform/chrome/wilco_ec/sysfs.c
> > @@ -23,6 +23,25 @@ struct boot_on_ac_request {
> > u8 reserved7;
> > } __packed;
> >
> > +#define CMD_EC_INFO 0x38
> > +enum get_ec_info_op {
> > + CMD_GET_EC_LABEL = 0,
> > + CMD_GET_EC_REV = 1,
> > + CMD_GET_EC_MODEL = 2,
> > + CMD_GET_EC_BUILD_DATE = 3,
> > +};
> > +
> > +struct get_ec_info_req {
> > + u8 cmd; /* Always CMD_EC_INFO */
> > + u8 reserved;
> > + u8 op; /* One of enum get_ec_info_op */
> > +} __packed;
> > +
> > +struct get_ec_info_resp {
> > + u8 reserved[2];
> > + char value[9]; /* __nonstring: might not be null terminated */
> > +} __packed;
> > +
> > static ssize_t boot_on_ac_store(struct device *dev,
> > struct device_attribute *attr,
> > const char *buf, size_t count)
> > @@ -57,8 +76,68 @@ static ssize_t boot_on_ac_store(struct device *dev,
> >
> > static DEVICE_ATTR_WO(boot_on_ac);
> >
> > +static ssize_t get_info(struct device *dev, char *buf, enum get_ec_info_op op)
> > +{
> > + struct wilco_ec_device *ec = dev_get_drvdata(dev);
> > + struct get_ec_info_req req = { .cmd = CMD_EC_INFO, .op = op };
> > + struct get_ec_info_resp resp;
> > + int ret;
> > +
> > + struct wilco_ec_message msg = {
> > + .type = WILCO_EC_MSG_LEGACY,
> > + .request_data = &req,
> > + .request_size = sizeof(req),
> > + .response_data = &resp,
> > + .response_size = sizeof(resp),
> > + };
> > +
> > + ret = wilco_ec_mailbox(ec, &msg);
> > + if (ret < 0)
> > + return ret;
> > +
> > + return scnprintf(buf, PAGE_SIZE, "%.*s\n", (int)sizeof(resp.value),
> > + (char *)&resp.value);
> > +}
> > +
> > +static ssize_t version_show(struct device *dev, struct device_attribute *attr,
> > + char *buf)
> > +{
> > + return get_info(dev, buf, CMD_GET_EC_LABEL);
> > +}
> > +
> > +static DEVICE_ATTR_RO(version);
> > +
> > +static ssize_t build_revision_show(struct device *dev,
> > + struct device_attribute *attr, char *buf)
> > +{
> > + return get_info(dev, buf, CMD_GET_EC_REV);
> > +}
> > +
> > +static DEVICE_ATTR_RO(build_revision);
> > +
> > +static ssize_t build_date_show(struct device *dev,
> > + struct device_attribute *attr, char *buf)
> > +{
> > + return get_info(dev, buf, CMD_GET_EC_BUILD_DATE);
> > +}
> > +
> > +static DEVICE_ATTR_RO(build_date);
> > +
> > +static ssize_t model_number_show(struct device *dev,
> > + struct device_attribute *attr, char *buf)
> > +{
> > + return get_info(dev, buf, CMD_GET_EC_MODEL);
> > +}
> > +
> > +static DEVICE_ATTR_RO(model_number);
> > +
> > +
> > static struct attribute *wilco_dev_attrs[] = {
> > &dev_attr_boot_on_ac.attr,
> > + &dev_attr_build_date.attr,
> > + &dev_attr_build_revision.attr,
> > + &dev_attr_model_number.attr,
> > + &dev_attr_version.attr,
> > NULL,
> > };
> >
> >
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] platform/chrome: wilco_ec: Add version sysfs entries
2019-06-05 15:12 ` Nick Crews
@ 2019-06-06 10:21 ` Enric Balletbo i Serra
0 siblings, 0 replies; 4+ messages in thread
From: Enric Balletbo i Serra @ 2019-06-06 10:21 UTC (permalink / raw)
To: Nick Crews; +Cc: Raul E Rangel, linux-kernel, Benson Leung
Hi,
On 5/6/19 17:12, Nick Crews wrote:
> Thanks Raul and Enric, this looks good to me.
>
> On Mon, Jun 3, 2019 at 2:40 PM Enric Balletbo i Serra
> <enric.balletbo@collabora.com> wrote:
>>
>> Nick,
>>
>> On 3/6/19 20:16, Raul E Rangel wrote:
>>> Add the ability to extract version information from the EC.
>>>
>>> Example Output:
>>> $ cd /sys/bus/platform/devices/GOOG000C:00
>>> $ tail build_date build_revision version model_number
>>> ==> build_date <==
>>> 04/25/19
>>>
>>> ==> build_revision <==
>>> d2592cae0
>>>
>>> ==> version <==
>>> 00.00.14
>>>
>>> ==> model_number <==
>>> 08B6
>>>
>>> Signed-off-by: Raul E Rangel <rrangel@chromium.org>
>
> Reviewed-by: Nick Crews <ncrews@chromium.org>
applied for 5.3
Thanks,
Enric
>
>>
>> Can I get your rb here?
>>
>> Thanks,
>> Enric
>>
>>> ---
>>> This patch is rebased on chromeos-platform/for-next. It was originally
>>> developed on the chromiumos 4.19 kernel which has the following patch
>>> applied: https://lore.kernel.org/patchwork/patch/1062995/. That patch is
>>> not currently upstream.
>>>
>>> Changes in v2:
>>> - Removed version directory
>>> - Renamed label to version
>>> - Sorted documentation
>>>
>>> .../ABI/testing/sysfs-platform-wilco-ec | 31 ++++++++
>>> drivers/platform/chrome/wilco_ec/sysfs.c | 79 +++++++++++++++++++
>>> 2 files changed, 110 insertions(+)
>>>
>>> diff --git a/Documentation/ABI/testing/sysfs-platform-wilco-ec b/Documentation/ABI/testing/sysfs-platform-wilco-ec
>>> index 8e5d6eee44db2..8827a734f9331 100644
>>> --- a/Documentation/ABI/testing/sysfs-platform-wilco-ec
>>> +++ b/Documentation/ABI/testing/sysfs-platform-wilco-ec
>>> @@ -7,3 +7,34 @@ Description:
>>> want to run their device headless or with a dock.
>>>
>>> Input should be parseable by kstrtou8() to 0 or 1.
>>> +
>>> +What: /sys/bus/platform/devices/GOOG000C\:00/build_date
>>> +Date: May 2019
>>> +KernelVersion: 5.3
>>> +Description:
>>> + Display Wilco Embedded Controller firmware build date.
>>> + Output will a MM/DD/YY string.
>>> +
>>> +What: /sys/bus/platform/devices/GOOG000C\:00/build_revision
>>> +Date: May 2019
>>> +KernelVersion: 5.3
>>> +Description:
>>> + Display Wilco Embedded Controller build revision.
>>> + Output will a version string be similar to the example below:
>>> + d2592cae0
>>> +
>>> +What: /sys/bus/platform/devices/GOOG000C\:00/model_number
>>> +Date: May 2019
>>> +KernelVersion: 5.3
>>> +Description:
>>> + Display Wilco Embedded Controller model number.
>>> + Output will a version string be similar to the example below:
>>> + 08B6
>>> +
>>> +What: /sys/bus/platform/devices/GOOG000C\:00/version
>>> +Date: May 2019
>>> +KernelVersion: 5.3
>>> +Description:
>>> + Display Wilco Embedded Controller firmware version.
>>> + The format of the string is x.y.z. Where x is major, y is minor
>>> + and z is the build number. For example: 95.00.06
>>> diff --git a/drivers/platform/chrome/wilco_ec/sysfs.c b/drivers/platform/chrome/wilco_ec/sysfs.c
>>> index f84f0480460ae..3b86a21005d3e 100644
>>> --- a/drivers/platform/chrome/wilco_ec/sysfs.c
>>> +++ b/drivers/platform/chrome/wilco_ec/sysfs.c
>>> @@ -23,6 +23,25 @@ struct boot_on_ac_request {
>>> u8 reserved7;
>>> } __packed;
>>>
>>> +#define CMD_EC_INFO 0x38
>>> +enum get_ec_info_op {
>>> + CMD_GET_EC_LABEL = 0,
>>> + CMD_GET_EC_REV = 1,
>>> + CMD_GET_EC_MODEL = 2,
>>> + CMD_GET_EC_BUILD_DATE = 3,
>>> +};
>>> +
>>> +struct get_ec_info_req {
>>> + u8 cmd; /* Always CMD_EC_INFO */
>>> + u8 reserved;
>>> + u8 op; /* One of enum get_ec_info_op */
>>> +} __packed;
>>> +
>>> +struct get_ec_info_resp {
>>> + u8 reserved[2];
>>> + char value[9]; /* __nonstring: might not be null terminated */
>>> +} __packed;
>>> +
>>> static ssize_t boot_on_ac_store(struct device *dev,
>>> struct device_attribute *attr,
>>> const char *buf, size_t count)
>>> @@ -57,8 +76,68 @@ static ssize_t boot_on_ac_store(struct device *dev,
>>>
>>> static DEVICE_ATTR_WO(boot_on_ac);
>>>
>>> +static ssize_t get_info(struct device *dev, char *buf, enum get_ec_info_op op)
>>> +{
>>> + struct wilco_ec_device *ec = dev_get_drvdata(dev);
>>> + struct get_ec_info_req req = { .cmd = CMD_EC_INFO, .op = op };
>>> + struct get_ec_info_resp resp;
>>> + int ret;
>>> +
>>> + struct wilco_ec_message msg = {
>>> + .type = WILCO_EC_MSG_LEGACY,
>>> + .request_data = &req,
>>> + .request_size = sizeof(req),
>>> + .response_data = &resp,
>>> + .response_size = sizeof(resp),
>>> + };
>>> +
>>> + ret = wilco_ec_mailbox(ec, &msg);
>>> + if (ret < 0)
>>> + return ret;
>>> +
>>> + return scnprintf(buf, PAGE_SIZE, "%.*s\n", (int)sizeof(resp.value),
>>> + (char *)&resp.value);
>>> +}
>>> +
>>> +static ssize_t version_show(struct device *dev, struct device_attribute *attr,
>>> + char *buf)
>>> +{
>>> + return get_info(dev, buf, CMD_GET_EC_LABEL);
>>> +}
>>> +
>>> +static DEVICE_ATTR_RO(version);
>>> +
>>> +static ssize_t build_revision_show(struct device *dev,
>>> + struct device_attribute *attr, char *buf)
>>> +{
>>> + return get_info(dev, buf, CMD_GET_EC_REV);
>>> +}
>>> +
>>> +static DEVICE_ATTR_RO(build_revision);
>>> +
>>> +static ssize_t build_date_show(struct device *dev,
>>> + struct device_attribute *attr, char *buf)
>>> +{
>>> + return get_info(dev, buf, CMD_GET_EC_BUILD_DATE);
>>> +}
>>> +
>>> +static DEVICE_ATTR_RO(build_date);
>>> +
>>> +static ssize_t model_number_show(struct device *dev,
>>> + struct device_attribute *attr, char *buf)
>>> +{
>>> + return get_info(dev, buf, CMD_GET_EC_MODEL);
>>> +}
>>> +
>>> +static DEVICE_ATTR_RO(model_number);
>>> +
>>> +
>>> static struct attribute *wilco_dev_attrs[] = {
>>> &dev_attr_boot_on_ac.attr,
>>> + &dev_attr_build_date.attr,
>>> + &dev_attr_build_revision.attr,
>>> + &dev_attr_model_number.attr,
>>> + &dev_attr_version.attr,
>>> NULL,
>>> };
>>>
>>>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-06-06 10:21 UTC | newest]
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-- links below jump to the message on this page --
2019-06-03 18:16 [PATCH v2] platform/chrome: wilco_ec: Add version sysfs entries Raul E Rangel
2019-06-03 20:40 ` Enric Balletbo i Serra
2019-06-05 15:12 ` Nick Crews
2019-06-06 10:21 ` Enric Balletbo i Serra
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