From: William Breathitt Gray <vilhelm.gray@gmail.com> To: jic23@kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com, kernel@pengutronix.de, a.fatoum@pengutronix.de, kamel.bouhara@bootlin.com, gwendal@chromium.org, alexandre.belloni@bootlin.com, david@lechnology.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, syednwaris@gmail.com, patrick.havelange@essensium.com, fabrice.gasnier@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, o.rempel@pengutronix.de, jarkko.nikula@linux.intel.com, William Breathitt Gray <vilhelm.gray@gmail.com>, Dan Carpenter <dan.carpenter@oracle.com> Subject: [PATCH v15 09/13] counter: Implement signalZ_action_component_id sysfs attribute Date: Mon, 9 Aug 2021 21:37:34 +0900 [thread overview] Message-ID: <d72159ab7ebfe607d86c0ab472979e8eca6f16a0.1628511445.git.vilhelm.gray@gmail.com> (raw) In-Reply-To: <cover.1628511445.git.vilhelm.gray@gmail.com> The Generic Counter chrdev interface expects users to supply component IDs in order to select Synapses for requests. In order for users to know what component ID belongs to which Synapse this information must be exposed. The signalZ_action_component_id attribute provides a way for users to discover what component ID belongs to the respective Synapse. Cc: Gwendal Grignou <gwendal@chromium.org> Cc: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> --- Documentation/ABI/testing/sysfs-bus-counter | 7 ++++ drivers/counter/counter-sysfs.c | 46 ++++++++++++++++++++- 2 files changed, 52 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter index dee79b606847..9809d8a47431 100644 --- a/Documentation/ABI/testing/sysfs-bus-counter +++ b/Documentation/ABI/testing/sysfs-bus-counter @@ -203,6 +203,13 @@ Description: both edges: Any state transition. +What: /sys/bus/counter/devices/counterX/countY/signalZ_action_component_id +KernelVersion: 5.15 +Contact: linux-iio@vger.kernel.org +Description: + Read-only attribute that indicates the component ID of the + respective Synapse of Count Y for Signal Z. + What: /sys/bus/counter/devices/counterX/countY/spike_filter_ns KernelVersion: 5.14 Contact: linux-iio@vger.kernel.org diff --git a/drivers/counter/counter-sysfs.c b/drivers/counter/counter-sysfs.c index dbb507c9da11..11bef9f8190f 100644 --- a/drivers/counter/counter-sysfs.c +++ b/drivers/counter/counter-sysfs.c @@ -393,7 +393,6 @@ static int counter_avail_attr_create(struct device *const dev, struct counter_attribute *counter_attr; struct device_attribute *dev_attr; - /* Allocate Counter attribute */ counter_attr = devm_kzalloc(dev, sizeof(*counter_attr), GFP_KERNEL); if (!counter_attr) return -ENOMEM; @@ -535,6 +534,46 @@ static int counter_name_attr_create(struct device *const dev, return 0; } +static ssize_t counter_comp_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + const size_t id = (size_t)to_counter_attribute(attr)->comp.priv; + + return sprintf(buf, "%zu\n", id); +} + +static int counter_comp_id_attr_create(struct device *const dev, + struct counter_attribute_group *const group, + const char *name, const size_t id) +{ + struct counter_attribute *counter_attr; + + /* Allocate Counter attribute */ + counter_attr = devm_kzalloc(dev, sizeof(*counter_attr), GFP_KERNEL); + if (!counter_attr) + return -ENOMEM; + + /* Generate component ID name */ + name = devm_kasprintf(dev, GFP_KERNEL, "%s_component_id", name); + if (!name) + return -ENOMEM; + + /* Configure Counter attribute */ + counter_attr->comp.priv = (void *)id; + + /* Configure device attribute */ + sysfs_attr_init(&counter_attr->dev_attr.attr); + counter_attr->dev_attr.attr.name = name; + counter_attr->dev_attr.attr.mode = 0444; + counter_attr->dev_attr.show = counter_comp_id_show; + + /* Store list node */ + list_add(&counter_attr->l, &group->attr_list); + group->num_attr++; + + return 0; +} + static struct counter_comp counter_signal_comp = { .type = COUNTER_COMP_SIGNAL_LEVEL, .name = "signal", @@ -629,6 +668,11 @@ static int counter_sysfs_synapses_add(struct counter_device *const counter, COUNTER_SCOPE_COUNT, count); if (err < 0) return err; + + /* Create Synapse component ID attribute */ + err = counter_comp_id_attr_create(dev, group, comp.name, i); + if (err < 0) + return err; } return 0; -- 2.32.0
WARNING: multiple messages have this Message-ID (diff)
From: William Breathitt Gray <vilhelm.gray@gmail.com> To: jic23@kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com, kernel@pengutronix.de, a.fatoum@pengutronix.de, kamel.bouhara@bootlin.com, gwendal@chromium.org, alexandre.belloni@bootlin.com, david@lechnology.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, syednwaris@gmail.com, patrick.havelange@essensium.com, fabrice.gasnier@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, o.rempel@pengutronix.de, jarkko.nikula@linux.intel.com, William Breathitt Gray <vilhelm.gray@gmail.com>, Dan Carpenter <dan.carpenter@oracle.com> Subject: [PATCH v15 09/13] counter: Implement signalZ_action_component_id sysfs attribute Date: Mon, 9 Aug 2021 21:37:34 +0900 [thread overview] Message-ID: <d72159ab7ebfe607d86c0ab472979e8eca6f16a0.1628511445.git.vilhelm.gray@gmail.com> (raw) In-Reply-To: <cover.1628511445.git.vilhelm.gray@gmail.com> The Generic Counter chrdev interface expects users to supply component IDs in order to select Synapses for requests. In order for users to know what component ID belongs to which Synapse this information must be exposed. The signalZ_action_component_id attribute provides a way for users to discover what component ID belongs to the respective Synapse. Cc: Gwendal Grignou <gwendal@chromium.org> Cc: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> --- Documentation/ABI/testing/sysfs-bus-counter | 7 ++++ drivers/counter/counter-sysfs.c | 46 ++++++++++++++++++++- 2 files changed, 52 insertions(+), 1 deletion(-) diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter index dee79b606847..9809d8a47431 100644 --- a/Documentation/ABI/testing/sysfs-bus-counter +++ b/Documentation/ABI/testing/sysfs-bus-counter @@ -203,6 +203,13 @@ Description: both edges: Any state transition. +What: /sys/bus/counter/devices/counterX/countY/signalZ_action_component_id +KernelVersion: 5.15 +Contact: linux-iio@vger.kernel.org +Description: + Read-only attribute that indicates the component ID of the + respective Synapse of Count Y for Signal Z. + What: /sys/bus/counter/devices/counterX/countY/spike_filter_ns KernelVersion: 5.14 Contact: linux-iio@vger.kernel.org diff --git a/drivers/counter/counter-sysfs.c b/drivers/counter/counter-sysfs.c index dbb507c9da11..11bef9f8190f 100644 --- a/drivers/counter/counter-sysfs.c +++ b/drivers/counter/counter-sysfs.c @@ -393,7 +393,6 @@ static int counter_avail_attr_create(struct device *const dev, struct counter_attribute *counter_attr; struct device_attribute *dev_attr; - /* Allocate Counter attribute */ counter_attr = devm_kzalloc(dev, sizeof(*counter_attr), GFP_KERNEL); if (!counter_attr) return -ENOMEM; @@ -535,6 +534,46 @@ static int counter_name_attr_create(struct device *const dev, return 0; } +static ssize_t counter_comp_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + const size_t id = (size_t)to_counter_attribute(attr)->comp.priv; + + return sprintf(buf, "%zu\n", id); +} + +static int counter_comp_id_attr_create(struct device *const dev, + struct counter_attribute_group *const group, + const char *name, const size_t id) +{ + struct counter_attribute *counter_attr; + + /* Allocate Counter attribute */ + counter_attr = devm_kzalloc(dev, sizeof(*counter_attr), GFP_KERNEL); + if (!counter_attr) + return -ENOMEM; + + /* Generate component ID name */ + name = devm_kasprintf(dev, GFP_KERNEL, "%s_component_id", name); + if (!name) + return -ENOMEM; + + /* Configure Counter attribute */ + counter_attr->comp.priv = (void *)id; + + /* Configure device attribute */ + sysfs_attr_init(&counter_attr->dev_attr.attr); + counter_attr->dev_attr.attr.name = name; + counter_attr->dev_attr.attr.mode = 0444; + counter_attr->dev_attr.show = counter_comp_id_show; + + /* Store list node */ + list_add(&counter_attr->l, &group->attr_list); + group->num_attr++; + + return 0; +} + static struct counter_comp counter_signal_comp = { .type = COUNTER_COMP_SIGNAL_LEVEL, .name = "signal", @@ -629,6 +668,11 @@ static int counter_sysfs_synapses_add(struct counter_device *const counter, COUNTER_SCOPE_COUNT, count); if (err < 0) return err; + + /* Create Synapse component ID attribute */ + err = counter_comp_id_attr_create(dev, group, comp.name, i); + if (err < 0) + return err; } return 0; -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-08-09 12:38 UTC|newest] Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-09 12:37 [PATCH v15 00/13] Introduce the Counter character device interface William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 01/13] counter: 104-quad-8: Describe member 'lock' in 'quad8' William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 19:26 ` Jonathan Cameron 2021-08-09 19:26 ` Jonathan Cameron 2021-08-09 12:37 ` [PATCH v15 02/13] counter: Internalize sysfs interface code William Breathitt Gray 2021-08-15 16:31 ` Jonathan Cameron 2021-08-15 16:31 ` Jonathan Cameron 2021-08-09 12:37 ` [PATCH v15 03/13] counter: Update counter.h comments to reflect sysfs internalization William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 04/13] docs: counter: Update " William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 05/13] counter: Move counter enums to uapi header William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 06/13] counter: Add character device interface William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 07/13] docs: counter: Document " William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-15 16:51 ` Jonathan Cameron 2021-08-15 16:51 ` Jonathan Cameron 2021-08-21 10:52 ` William Breathitt Gray 2021-08-21 10:52 ` William Breathitt Gray 2021-08-22 2:03 ` Akira Yokosawa 2021-08-22 2:03 ` Akira Yokosawa 2021-08-09 12:37 ` [PATCH v15 08/13] tools/counter: Create Counter tools William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray [this message] 2021-08-09 12:37 ` [PATCH v15 09/13] counter: Implement signalZ_action_component_id sysfs attribute William Breathitt Gray 2021-08-15 16:57 ` Jonathan Cameron 2021-08-15 16:57 ` Jonathan Cameron 2021-08-09 12:37 ` [PATCH v15 10/13] counter: Implement *_component_id sysfs attributes William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 11/13] counter: Implement events_queue_size sysfs attribute William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 12/13] counter: 104-quad-8: Replace mutex with spinlock William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 12:37 ` [PATCH v15 13/13] counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8 William Breathitt Gray 2021-08-09 12:37 ` William Breathitt Gray 2021-08-09 19:34 ` [PATCH v15 00/13] Introduce the Counter character device interface Jonathan Cameron 2021-08-09 19:34 ` Jonathan Cameron
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