* Re: [PATCH v3 4/9] dt-bindings: leds: leds-cpcap: convert to DT schema
From: Rob Herring (Arm) @ 2026-02-23 9:54 UTC (permalink / raw)
To: Svyatoslav Ryhel
Cc: devicetree, linux-input, Tony Lindgren, linux-kernel,
Pavel Machek, Conor Dooley, linux-leds, Krzysztof Kozlowski,
Liam Girdwood, Mark Brown, Lee Jones, David Lechner,
Dmitry Torokhov
In-Reply-To: <20260223063858.12208-5-clamor95@gmail.com>
On Mon, 23 Feb 2026 08:38:53 +0200, Svyatoslav Ryhel wrote:
> Convert LEDs devicetree bindings for the Motorola CPCAP MFD from TXT to
> YAML format. This patch does not change any functionality; the bindings
> remain the same.
>
> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
> Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
> ---
> .../devicetree/bindings/leds/leds-cpcap.txt | 29 -------------
> .../bindings/leds/motorola,cpcap-leds.yaml | 42 +++++++++++++++++++
> 2 files changed, 42 insertions(+), 29 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/leds/leds-cpcap.txt
> create mode 100644 Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml
>
My bot found errors running 'make dt_binding_check' on your patch:
yamllint warnings/errors:
dtschema/dtc warnings/errors:
doc reference errors (make refcheckdocs):
Warning: Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml references a file that doesn't exist: Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
Warning: Documentation/devicetree/bindings/mfd/motorola-cpcap.txt references a file that doesn't exist: Documentation/devicetree/bindings/leds/leds-cpcap.txt
Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml: Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
Documentation/devicetree/bindings/mfd/motorola-cpcap.txt: Documentation/devicetree/bindings/leds/leds-cpcap.txt
See https://patchwork.kernel.org/project/devicetree/patch/20260223063858.12208-5-clamor95@gmail.com
The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.
^ permalink raw reply
* Re: [PATCH v3 1/9] dt-bindings: regulator: cpcap-regulator: convert to DT schema
From: Rob Herring (Arm) @ 2026-02-23 9:54 UTC (permalink / raw)
To: Svyatoslav Ryhel
Cc: Mark Brown, linux-kernel, David Lechner, Krzysztof Kozlowski,
Liam Girdwood, devicetree, linux-input, Conor Dooley, Lee Jones,
linux-leds, Pavel Machek, Dmitry Torokhov, Tony Lindgren
In-Reply-To: <20260223063858.12208-2-clamor95@gmail.com>
On Mon, 23 Feb 2026 08:38:50 +0200, Svyatoslav Ryhel wrote:
> Convert devicetree bindings for the Motorola CPCAP MFD regulator subnode
> from TXT to YAML format. Main functionality preserved.
>
> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
> ---
> .../bindings/regulator/cpcap-regulator.txt | 35 --------------
> .../regulator/motorola,cpcap-regulator.yaml | 46 +++++++++++++++++++
> 2 files changed, 46 insertions(+), 35 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
> create mode 100644 Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
>
My bot found errors running 'make dt_binding_check' on your patch:
yamllint warnings/errors:
dtschema/dtc warnings/errors:
doc reference errors (make refcheckdocs):
Warning: Documentation/devicetree/bindings/mfd/motorola-cpcap.txt references a file that doesn't exist: Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
Warning: Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml references a file that doesn't exist: Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
Documentation/devicetree/bindings/mfd/motorola-cpcap.txt: Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml: Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
See https://patchwork.kernel.org/project/devicetree/patch/20260223063858.12208-2-clamor95@gmail.com
The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.
^ permalink raw reply
* [PATCH v4] HID: generic: add LampArray support via hid-lamparray helper
From: Tim Guttzeit @ 2026-02-23 8:39 UTC (permalink / raw)
To: Jiri Kosina, Benjamin Tissoires
Cc: wse, Tim Guttzeit, linux-kernel, linux-input
Add a new hid-lamparray helper module and integrate it with the
hid-generic driver.
The helper provides basic support for devices exposing a
Lighting/LampArray application collection (usage page 0x59) and
registers a single-zone RGB LED representation via the LED
subsystem.
hid-generic now checks for LampArray support after hid_parse() and
optionally registers a lamparray instance. Failures in the helper
do not abort device probe to keep the device functional.
LampArray resources are released on driver remove.
Signed-off-by: Tim Guttzeit <tgu@tuxedocomputers.com>
---
V1 -> V2: Fix Kconfig to avoid build errors when LEDS_CLASS_MULTICOLOR is disabled
V2 -> V3: Squash V1 and V2 into one patch
V3 -> V4: Restrict CONFIG_HID_LAMPARRAY to built-in configurations only
to fix additional randconfig build errors
drivers/hid/Kconfig | 10 +
drivers/hid/Makefile | 2 +
drivers/hid/hid-generic.c | 41 +-
drivers/hid/hid-lamparray.c | 855 ++++++++++++++++++++++++++++++++++++
drivers/hid/hid-lamparray.h | 91 ++++
5 files changed, 997 insertions(+), 2 deletions(-)
create mode 100644 drivers/hid/hid-lamparray.c
create mode 100644 drivers/hid/hid-lamparray.h
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 920a64b66b25..548dc708e5cd 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -92,6 +92,16 @@ config HID_GENERIC
If unsure, say Y.
+config HID_LAMPARRAY
+ bool "HID LampArray helper"
+ depends on HID=y && HID_GENERIC=y && LEDS_CLASS=y && LEDS_CLASS_MULTICOLOR=y
+ default y
+ help
+ Helper for HID devices exposing a Lighting/LampArray collection.
+ Treats LampArray devices as a single-zone device and exposes a sysfs
+ interface for changing color and intensity values. Also exposes a
+ sysfs flag to be disabled e.g. by a userspace driver.
+
config HID_HAPTIC
bool "Haptic touchpad support"
default n
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 361a7daedeb8..5a14b4b0970d 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -13,6 +13,8 @@ obj-$(CONFIG_UHID) += uhid.o
obj-$(CONFIG_HID_GENERIC) += hid-generic.o
+obj-$(CONFIG_HID_LAMPARRAY) += hid-lamparray.o
+
hid-$(CONFIG_HIDRAW) += hidraw.o
hid-logitech-y := hid-lg.o
diff --git a/drivers/hid/hid-generic.c b/drivers/hid/hid-generic.c
index c2de916747de..57b81c86982c 100644
--- a/drivers/hid/hid-generic.c
+++ b/drivers/hid/hid-generic.c
@@ -20,6 +20,7 @@
#include <asm/byteorder.h>
#include <linux/hid.h>
+#include "hid-lamparray.h"
static struct hid_driver hid_generic;
@@ -31,7 +32,7 @@ static int __check_hid_generic(struct device_driver *drv, void *data)
if (hdrv == &hid_generic)
return 0;
- return hid_match_device(hdev, hdrv) != NULL;
+ return !!hid_match_device(hdev, hdrv);
}
static bool hid_generic_match(struct hid_device *hdev,
@@ -60,6 +61,7 @@ static int hid_generic_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
int ret;
+ struct lamparray *la = NULL;
hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
@@ -67,7 +69,31 @@ static int hid_generic_probe(struct hid_device *hdev,
if (ret)
return ret;
- return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (ret)
+ return ret;
+
+ /*
+ * Optional: attach LampArray support if present.
+ * Never fail probe on LampArray errors; keep device functional.
+ */
+ if (IS_ENABLED(CONFIG_HID_LAMPARRAY) && lamparray_is_supported_device(hdev)) {
+ const struct lamparray_init_state init = {
+ .r = 0xff,
+ .g = 0xff,
+ .b = 0xff,
+ .brightness = LED_FULL,
+ };
+
+ la = lamparray_register(hdev, &init);
+ if (IS_ERR(la)) {
+ hid_warn(hdev, "LampArray init failed: %ld\n", PTR_ERR(la));
+ la = NULL;
+ }
+ }
+
+ hid_set_drvdata(hdev, la);
+ return 0;
}
static int hid_generic_reset_resume(struct hid_device *hdev)
@@ -78,6 +104,16 @@ static int hid_generic_reset_resume(struct hid_device *hdev)
return 0;
}
+static void hid_generic_remove(struct hid_device *hdev)
+{
+ struct lamparray *la = hid_get_drvdata(hdev);
+
+ if (IS_ENABLED(CONFIG_HID_LAMPARRAY) && la)
+ lamparray_unregister(la);
+
+ hid_hw_stop(hdev);
+}
+
static const struct hid_device_id hid_table[] = {
{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) },
{ }
@@ -90,6 +126,7 @@ static struct hid_driver hid_generic = {
.match = hid_generic_match,
.probe = hid_generic_probe,
.reset_resume = hid_generic_reset_resume,
+ .remove = hid_generic_remove,
};
module_hid_driver(hid_generic);
diff --git a/drivers/hid/hid-lamparray.c b/drivers/hid/hid-lamparray.c
new file mode 100644
index 000000000000..5be46fff0191
--- /dev/null
+++ b/drivers/hid/hid-lamparray.c
@@ -0,0 +1,855 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * hid-lamparray.c - HID LampArray helper module (single-zone RGB)
+ *
+ * Helper module for HID drivers supporting devices that expose a
+ * Lighting and Illumination (LampArray) application collection
+ * (usage page 0x59).
+ *
+ * The module provides a minimal integration with the LED subsystem
+ * and treats the device as a single zone: all lamps share one RGB
+ * value and a global brightness level. It does not implement multi-
+ * zone layouts or hardware effects.
+ *
+ *
+ * If enabled, one multicolor LED class device is registered under
+ * /sys/class/leds/<HID-ID> to expose the single-zone RGB control.
+ *
+ * The use_leds_uapi sysfs attribute is attached directly to the HID device
+ * under /sys/bus/hid/devices/<HID-ID>/use_leds_uapi.Writing 0 to use_leds_uapi
+ * unregisters the LED class device. The last state is kept cached. Writing 1
+ * registers it again and restores the cached state to hardware.
+ *
+ * State is cached as last known RGB + brightness. Setting sends a HID
+ * SET_REPORT. Getting issues a HID GET_REPORT and updates the cache on
+ * mismatch. Since the device is handled as single-zone, readback only queries
+ * lamp 0 when a lamp range is available.
+ *
+ * The module does not bind to devices on its own. Instead, a HID
+ * driver may query support via lamparray_is_supported_device() after
+ * hid_parse() and create an instance using lamparray_register().
+ *
+ * Copyright (C) 2026 Tim Guttzeit <tgu@tuxedocomputers.com>
+ */
+
+#include "hid-lamparray.h"
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/leds.h>
+#include <linux/led-class-multicolor.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/mutex.h>
+#include <linux/bitops.h>
+#include <linux/xarray.h>
+
+/* Constants */
+
+/* HID usages (LampArray, etc.) */
+#define HID_LIGHTING_ILLUMINATION_USAGE_PAGE 0x0059
+
+#define HID_LAIP_LAMP_COUNT 0x0003
+#define HID_LAIP_LAMP_ID 0x0021
+#define HID_LAIP_RED_UPDATE_CHANNEL 0x0051
+#define HID_LAIP_GREEN_UPDATE_CHANNEL 0x0052
+#define HID_LAIP_BLUE_UPDATE_CHANNEL 0x0053
+#define HID_LAIP_INTENSITY_UPDATE_CHANNEL 0x0054
+#define HID_LAIP_LAMP_ID_START 0x0061
+#define HID_LAIP_LAMP_ID_END 0x0062
+#define HID_LAIP_AUTONOMOUS_MODE 0x0071
+
+#define HID_APPLICATION_COLLECTION_USAGE_TYPE 0x0001
+
+/* Device state */
+
+struct lamparray_quirks {
+ unsigned long flags;
+ int fixed_lamp_count;
+};
+
+#define LAMPARRAY_QUIRK_LAMPCOUNT_FIXED BIT(0)
+
+struct lamparray_quirk_entry {
+ u16 vendor;
+ u16 product;
+ unsigned long flags;
+ int fixed_lamp_count;
+};
+
+static const struct lamparray_quirk_entry lamparray_quirk_table[] = {
+ { 0xcafe, 0x4005, LAMPARRAY_QUIRK_LAMPCOUNT_FIXED, 12 },
+ {}
+};
+
+static const struct lamparray_quirk_entry *
+lamparray_lookup_quirks(struct hid_device *hdev)
+{
+ const struct lamparray_quirk_entry *e;
+
+ for (e = lamparray_quirk_table; e->vendor; e++) {
+ if (hdev->vendor == e->vendor && hdev->product == e->product)
+ return e;
+ }
+ return NULL;
+}
+
+struct lamparray_device {
+ const struct lamparray_quirk_entry *quirks;
+
+ struct hid_device *hdev;
+ struct hid_report *update_report;
+
+ struct hid_field *red_field;
+ int red_index;
+ struct hid_field *green_field;
+ int green_index;
+ struct hid_field *blue_field;
+ int blue_index;
+ struct hid_field *intensity_field;
+ int intensity_index;
+
+ struct hid_report *autonomous_report;
+ struct hid_field *autonomous_field;
+
+ struct hid_field *range_start_field;
+ int range_start_index;
+
+ struct hid_field *range_end_field;
+ int range_end_index;
+
+ struct hid_field *lamp_count_field;
+ int lamp_count;
+ int lamp_count_index;
+
+ struct led_classdev_mc mc_cdev;
+ struct mc_subled subleds[3];
+
+ struct mutex lock; /* protects cached state and HID access */
+
+ u8 last_r;
+ u8 last_g;
+ u8 last_b;
+ enum led_brightness last_brightness;
+
+ bool use_leds_uapi;
+ bool led_registered;
+};
+
+/*
+ * Opaque handle exposed to callers via the header.
+ * Keep the actual state in lamparray_device, but return a stable pointer.
+ */
+struct lamparray {
+ struct lamparray_device ldev;
+};
+
+static DEFINE_XARRAY(lamparray_by_hdev);
+
+/* HID helper functions */
+
+#ifdef DEBUG
+static void lamparray_dump_reports(struct hid_device *hdev)
+{
+ struct hid_report_enum *re;
+ struct hid_report *report;
+ int i, j, report_type;
+
+ for (report_type = 0; report_type < HID_REPORT_TYPES; report_type++) {
+ re = &hdev->report_enum[report_type];
+ hid_dbg(hdev, "Dumping reports for report type %d",
+ report_type);
+ list_for_each_entry(report, &re->report_list, list) {
+ hid_dbg(hdev,
+ "lamparray: report id=%u type=%d maxfield=%u\n",
+ report->id, report->type, report->maxfield);
+
+ for (i = 0; i < report->maxfield; i++) {
+ struct hid_field *field = report->field[i];
+
+ for (j = 0; j < field->maxusage; j++) {
+ u32 usage = field->usage[j].hid;
+ u16 page = usage >> 16;
+ u16 id = usage & 0xFFFF;
+
+ hid_dbg(hdev,
+ "lamparray: report %u field %d usage[%d]: page=0x%04x id=0x%04x\n",
+ report->id, i, j, page, id);
+ }
+ }
+ }
+ }
+}
+#else
+static inline void lamparray_dump_reports(struct hid_device *hdev)
+{}
+#endif
+
+static int lamparray_read_lamp_count(struct lamparray_device *ldev)
+{
+ struct hid_device *hdev = ldev->hdev;
+ struct hid_report *report;
+
+ if (ldev->quirks &&
+ (ldev->quirks->flags & LAMPARRAY_QUIRK_LAMPCOUNT_FIXED)) {
+ ldev->lamp_count = ldev->quirks->fixed_lamp_count;
+ hid_dbg(hdev, "LampCount from quirk: %d\n", ldev->lamp_count);
+ return 0;
+ }
+ if (!ldev->lamp_count_field) {
+ hid_warn(hdev, "No LampCount field found\n");
+ return -ENODEV;
+ }
+
+ report = ldev->lamp_count_field->report;
+
+ if (!report) {
+ hid_warn(hdev, "LampCount field has no report\n");
+ return -ENODEV;
+ }
+ hid_hw_request(hdev, report, HID_REQ_GET_REPORT);
+ ldev->lamp_count =
+ ldev->lamp_count_field->value[ldev->lamp_count_index];
+
+ hid_dbg(hdev, "LampCount from device: %d\n", ldev->lamp_count);
+
+ if (ldev->lamp_count <= 0) {
+ hid_warn(hdev, "LampCount is %d (invalid)\n", ldev->lamp_count);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int lamparray_parse_update_report(struct lamparray_device *ldev)
+{
+ struct hid_device *hdev = ldev->hdev;
+ struct hid_report_enum *re;
+ struct hid_report *report;
+ struct hid_field *field;
+ int i, j;
+
+ lamparray_dump_reports(hdev);
+
+ re = &hdev->report_enum[HID_FEATURE_REPORT];
+
+ list_for_each_entry(report, &re->report_list, list) {
+ for (i = 0; i < report->maxfield; i++) {
+ field = report->field[i];
+ if (!field)
+ continue;
+
+ if (!field->usage || !field->maxusage)
+ continue;
+
+ for (j = 0; j < field->maxusage; j++) {
+ u32 usage = field->usage[j].hid;
+ u16 page = usage >> 16;
+ u16 id = usage & 0xffff;
+
+ if (page !=
+ HID_LIGHTING_ILLUMINATION_USAGE_PAGE)
+ continue;
+ switch (id) {
+ case HID_LAIP_LAMP_COUNT:
+ ldev->lamp_count_field = field;
+ ldev->lamp_count_index = j;
+ break;
+ case HID_LAIP_RED_UPDATE_CHANNEL:
+ ldev->update_report = report;
+ ldev->red_field = field;
+ ldev->red_index = j;
+ break;
+ case HID_LAIP_GREEN_UPDATE_CHANNEL:
+ ldev->update_report = report;
+ ldev->green_field = field;
+ ldev->green_index = j;
+ break;
+ case HID_LAIP_BLUE_UPDATE_CHANNEL:
+ ldev->update_report = report;
+ ldev->blue_field = field;
+ ldev->blue_index = j;
+ break;
+ case HID_LAIP_INTENSITY_UPDATE_CHANNEL:
+ ldev->update_report = report;
+ ldev->intensity_field = field;
+ ldev->intensity_index = j;
+ break;
+ case HID_LAIP_LAMP_ID_START:
+ ldev->range_start_field = field;
+ ldev->range_start_index = j;
+ break;
+ case HID_LAIP_LAMP_ID_END:
+ ldev->range_end_field = field;
+ ldev->range_end_index = j;
+ break;
+ case HID_LAIP_AUTONOMOUS_MODE:
+ ldev->autonomous_field = field;
+ ldev->autonomous_report = report;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ if (!ldev->update_report || !ldev->red_field || !ldev->green_field ||
+ !ldev->blue_field || !ldev->autonomous_report || !ldev->autonomous_field)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int lamparray_hw_set_autonomous(struct lamparray_device *ldev,
+ bool enable)
+{
+ struct hid_device *hdev = ldev->hdev;
+ struct hid_field *field = ldev->autonomous_field;
+ struct hid_report *report = ldev->autonomous_report;
+
+ if (!field || !report)
+ return -ENODEV;
+
+ field->value[0] = enable ? 1 : 0;
+
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+ return 0;
+}
+
+static int lamparray_hw_set_state(struct lamparray_device *ldev, u8 r, u8 g,
+ u8 b, u8 intensity)
+{
+ struct hid_device *hdev = ldev->hdev;
+ struct hid_report *report = ldev->update_report;
+ int i, j;
+
+ if (!report || !ldev->red_field || !ldev->green_field ||
+ !ldev->blue_field || !ldev->intensity_field)
+ return -ENODEV;
+
+ if (ldev->range_start_field && ldev->range_end_field) {
+ ldev->range_start_field->value[ldev->range_start_index] = 0;
+ ldev->range_end_field->value[ldev->range_end_index] = ldev->lamp_count - 1;
+ }
+
+ for (i = 0; i < report->maxfield; i++) {
+ struct hid_field *field = report->field[i];
+
+ if (!field || !field->usage || !field->maxusage)
+ continue;
+
+ for (j = 0; j < field->maxusage; j++) {
+ u32 usage = field->usage[j].hid;
+ u16 page = usage >> 16;
+ u16 id = usage & 0xffff;
+
+ if (page != HID_LIGHTING_ILLUMINATION_USAGE_PAGE)
+ continue;
+
+ switch (id) {
+ case HID_LAIP_RED_UPDATE_CHANNEL:
+ field->value[j] = r;
+ break;
+ case HID_LAIP_GREEN_UPDATE_CHANNEL:
+ field->value[j] = g;
+ break;
+ case HID_LAIP_BLUE_UPDATE_CHANNEL:
+ field->value[j] = b;
+ break;
+ case HID_LAIP_INTENSITY_UPDATE_CHANNEL:
+ field->value[j] = intensity;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+ return 0;
+}
+
+static int lamparray_hw_get_state(struct lamparray_device *ldev, u8 *r, u8 *g,
+ u8 *b, enum led_brightness *brightness)
+{
+ struct hid_device *hdev = ldev->hdev;
+ struct hid_report *report = ldev->update_report;
+
+ if (!report || !ldev->red_field || !ldev->green_field ||
+ !ldev->blue_field || !ldev->intensity_field)
+ return -ENODEV;
+
+ if (!r || !g || !b || !brightness)
+ return -EINVAL;
+
+ /* Single-zone: Reading lamp 0 only suffices */
+ if (ldev->range_start_field && ldev->range_end_field) {
+ ldev->range_start_field->value[ldev->range_start_index] = 0;
+ ldev->range_end_field->value[ldev->range_end_index] = 0;
+ }
+
+ hid_hw_request(hdev, report, HID_REQ_GET_REPORT);
+
+ *r = ldev->red_field->value[ldev->red_index];
+ *g = ldev->green_field->value[ldev->green_index];
+ *b = ldev->blue_field->value[ldev->blue_index];
+ *brightness = ldev->intensity_field->value[ldev->intensity_index];
+
+ return 0;
+}
+
+/* Helper functions */
+
+static int lamparray_restore_state(struct lamparray_device *ldev)
+{
+ u8 r, g, b;
+ int ret;
+ enum led_brightness brightness;
+
+ mutex_lock(&ldev->lock);
+
+ if (!ldev->use_leds_uapi) {
+ mutex_unlock(&ldev->lock);
+ return 0;
+ }
+
+ r = ldev->last_r;
+ g = ldev->last_g;
+ b = ldev->last_b;
+ brightness = ldev->last_brightness;
+
+ ldev->mc_cdev.subled_info[0].brightness = r;
+ ldev->mc_cdev.subled_info[1].brightness = g;
+ ldev->mc_cdev.subled_info[2].brightness = b;
+ ldev->mc_cdev.led_cdev.brightness = brightness;
+
+ mutex_unlock(&ldev->lock);
+
+ ret = lamparray_hw_set_state(ldev, r, g, b, brightness);
+ return ret;
+}
+
+/* LEDs API */
+
+static int lamparray_led_brightness_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct led_classdev_mc *mc = lcdev_to_mccdev(cdev);
+ struct lamparray_device *ldev =
+ container_of(mc, struct lamparray_device, mc_cdev);
+ struct lamparray *la = container_of(ldev, struct lamparray, ldev);
+ u8 r, g, b;
+ int ret;
+
+ if (!la)
+ return -ENODEV;
+ ldev = &la->ldev;
+
+ ret = led_mc_calc_color_components(mc, brightness);
+ if (ret)
+ return ret;
+
+ r = mc->subled_info[0].brightness;
+ g = mc->subled_info[1].brightness;
+ b = mc->subled_info[2].brightness;
+
+ ret = lamparray_hw_set_state(ldev, r, g, b, brightness);
+ if (ret)
+ hid_err(ldev->hdev, "Failed to send LampArray update: %d\n",
+ ret);
+
+ mutex_lock(&ldev->lock);
+ ldev->last_r = r;
+ ldev->last_g = g;
+ ldev->last_b = b;
+ ldev->last_brightness = brightness;
+ mutex_unlock(&ldev->lock);
+
+ return 0;
+}
+
+static enum led_brightness
+lamparray_led_brightness_get(struct led_classdev *cdev)
+{
+ struct led_classdev_mc *mc = lcdev_to_mccdev(cdev);
+ struct lamparray_device *ldev =
+ container_of(mc, struct lamparray_device, mc_cdev);
+ enum led_brightness brightness;
+ struct lamparray *la = container_of(ldev, struct lamparray, ldev);
+ u8 rr, gg, bb;
+ enum led_brightness br;
+ int ret;
+
+ /* Default: cache (also used while registering LED classdev) */
+ mutex_lock(&ldev->lock);
+ brightness = ldev->last_brightness;
+ mutex_unlock(&ldev->lock);
+
+ /* Only do HID readback after registration completed */
+ if (READ_ONCE(ldev->led_registered)) {
+ if (!la)
+ return brightness;
+ ldev = &la->ldev;
+
+ ret = lamparray_hw_get_state(ldev, &rr, &gg, &bb, &br);
+ if (ret) {
+ hid_warn(ldev->hdev,
+ "Failed to read LampArray state (%d), using cached brightness %u\n",
+ ret, brightness);
+ return brightness;
+ }
+
+ mutex_lock(&ldev->lock);
+ if (ldev->last_r != rr || ldev->last_g != gg ||
+ ldev->last_b != bb || ldev->last_brightness != br) {
+ ldev->last_r = rr;
+ ldev->last_g = gg;
+ ldev->last_b = bb;
+ ldev->last_brightness = br;
+
+ if (ldev->led_registered && ldev->mc_cdev.subled_info) {
+ ldev->mc_cdev.subled_info[0].brightness = rr;
+ ldev->mc_cdev.subled_info[1].brightness = gg;
+ ldev->mc_cdev.subled_info[2].brightness = bb;
+ }
+ }
+ mutex_unlock(&ldev->lock);
+ return br;
+ }
+ return brightness;
+}
+
+static int lamparray_register_led(struct lamparray_device *ldev)
+{
+ struct device *dev = &ldev->hdev->dev;
+ struct led_classdev *cdev = &ldev->mc_cdev.led_cdev;
+ u8 r_i, g_i, b_i;
+ int ret;
+
+ mutex_lock(&ldev->lock);
+
+ if (ldev->led_registered) {
+ mutex_unlock(&ldev->lock);
+ return 0;
+ }
+
+ if (!cdev->name) {
+ cdev->name =
+ devm_kasprintf(dev, GFP_KERNEL, "%s", dev_name(dev));
+ if (!cdev->name) {
+ mutex_unlock(&ldev->lock);
+ return -ENOMEM;
+ }
+ }
+
+ cdev->max_brightness = 255;
+ cdev->brightness_set_blocking = lamparray_led_brightness_set;
+ cdev->brightness_get = lamparray_led_brightness_get;
+ cdev->brightness = ldev->last_brightness;
+
+ ldev->subleds[0].color_index = LED_COLOR_ID_RED;
+ ldev->subleds[1].color_index = LED_COLOR_ID_GREEN;
+ ldev->subleds[2].color_index = LED_COLOR_ID_BLUE;
+
+ /*
+ * Initialize the color mix (multi_intensity) from the last known HW/init
+ * state so that writing only /brightness scales the expected default color
+ * instead of white.
+ *
+ * If last_brightness is non-zero, treat last_r/g/b as per-channel
+ * brightness and normalize back to intensities (0..255).
+ * If last_brightness is zero, keep last_r/g/b as the intended mix.
+ */
+ if (ldev->last_brightness) {
+ r_i = (u8)min_t(unsigned int, 255,
+ (ldev->last_r * 255u) / ldev->last_brightness);
+ g_i = (u8)min_t(unsigned int, 255,
+ (ldev->last_g * 255u) / ldev->last_brightness);
+ b_i = (u8)min_t(unsigned int, 255,
+ (ldev->last_b * 255u) / ldev->last_brightness);
+ } else {
+ r_i = ldev->last_r;
+ g_i = ldev->last_g;
+ b_i = ldev->last_b;
+ }
+
+ ldev->subleds[0].intensity = r_i;
+ ldev->subleds[1].intensity = g_i;
+ ldev->subleds[2].intensity = b_i;
+
+ ldev->mc_cdev.subled_info = ldev->subleds;
+ ldev->mc_cdev.num_colors = ARRAY_SIZE(ldev->subleds);
+
+ /* Ensure subled_info[].brightness matches intensity + brightness */
+ led_mc_calc_color_components(&ldev->mc_cdev, cdev->brightness);
+
+ ldev->mc_cdev.subled_info = ldev->subleds;
+ ldev->mc_cdev.num_colors = ARRAY_SIZE(ldev->subleds);
+
+ mutex_unlock(&ldev->lock);
+
+ ret = led_classdev_multicolor_register(dev, &ldev->mc_cdev);
+ if (ret)
+ return ret;
+
+ mutex_lock(&ldev->lock);
+ ldev->led_registered = true;
+ mutex_unlock(&ldev->lock);
+
+ return 0;
+}
+
+static void lamparray_unregister_led(struct lamparray_device *ldev)
+{
+ bool was_registered;
+
+ mutex_lock(&ldev->lock);
+ was_registered = ldev->led_registered;
+ ldev->led_registered = false;
+ mutex_unlock(&ldev->lock);
+
+ if (!was_registered)
+ return;
+
+ led_classdev_multicolor_unregister(&ldev->mc_cdev);
+}
+
+/* Sysfs */
+
+static struct lamparray_device *
+lamparray_ldev_from_sysfs_dev(struct device *dev)
+{
+ struct hid_device *hdev = to_hid_device(dev);
+
+ return xa_load(&lamparray_by_hdev, (unsigned long)hdev);
+}
+
+static ssize_t use_leds_uapi_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct lamparray_device *ldev = lamparray_ldev_from_sysfs_dev(dev);
+
+ if (!ldev)
+ return -ENODEV;
+
+ return sysfs_emit(buf, "%d\n", ldev->use_leds_uapi);
+}
+
+static ssize_t use_leds_uapi_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct lamparray_device *ldev = lamparray_ldev_from_sysfs_dev(dev);
+ int val;
+ int old_val;
+ int ret;
+
+ if (!ldev)
+ return -ENODEV;
+
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return ret;
+
+ if (val != 0 && val != 1)
+ return -EINVAL;
+
+ mutex_lock(&ldev->lock);
+ old_val = ldev->use_leds_uapi;
+
+ if (val == old_val) {
+ mutex_unlock(&ldev->lock);
+ return count;
+ }
+
+ ldev->use_leds_uapi = val;
+ mutex_unlock(&ldev->lock);
+
+ if (val == 1) {
+ ret = lamparray_register_led(ldev);
+ if (ret) {
+ mutex_lock(&ldev->lock);
+ ldev->use_leds_uapi = old_val;
+ mutex_unlock(&ldev->lock);
+ return ret;
+ }
+ ret = lamparray_restore_state(ldev);
+ if (ret) {
+ hid_err(ldev->hdev, "Could not restore state: %d", ret);
+ return ret;
+ }
+
+ } else {
+ lamparray_unregister_led(ldev);
+ }
+
+ return count;
+}
+static DEVICE_ATTR_RW(use_leds_uapi);
+
+static struct attribute *lamparray_attrs[] = {
+ &dev_attr_use_leds_uapi.attr,
+ NULL,
+};
+
+static const struct attribute_group lamparray_attr_group = {
+ .attrs = lamparray_attrs,
+};
+
+static int lamparray_register_sysfs(struct lamparray_device *ldev)
+{
+ struct device *dev = &ldev->hdev->dev;
+ int ret;
+
+ ret = sysfs_create_group(&dev->kobj, &lamparray_attr_group);
+ if (ret)
+ hid_err(ldev->hdev,
+ "Failed to create lamparray sysfs group: %d\n", ret);
+
+ return ret;
+}
+
+static void lamparray_remove_sysfs(struct lamparray_device *ldev)
+{
+ sysfs_remove_group(&ldev->hdev->dev.kobj, &lamparray_attr_group);
+}
+
+/* Public API */
+
+bool lamparray_is_supported_device(struct hid_device *hdev)
+{
+ unsigned int i;
+
+ hid_dbg(hdev, "lamparray: walking %u collections\n",
+ hdev->maxcollection);
+
+ for (i = 0; i < hdev->maxcollection; i++) {
+ struct hid_collection *col = &hdev->collection[i];
+ u16 page = (col->usage & HID_USAGE_PAGE) >> 16;
+ u16 code = col->usage & HID_USAGE;
+
+ hid_dbg(hdev,
+ "lamparray: collection[%u]: type=%u level=%u usage=0x%08x page=0x%04x code=0x%04x\n",
+ i, col->type, col->level, col->usage, page, code);
+
+ if (col->type == HID_COLLECTION_APPLICATION &&
+ page == HID_LIGHTING_ILLUMINATION_USAGE_PAGE &&
+ code == HID_APPLICATION_COLLECTION_USAGE_TYPE) {
+ return true;
+ }
+ }
+ return false;
+}
+EXPORT_SYMBOL_GPL(lamparray_is_supported_device);
+
+struct lamparray *
+lamparray_register(struct hid_device *hdev,
+ const struct lamparray_init_state *led_init_state)
+{
+ int ret;
+ struct lamparray *la;
+ struct lamparray_device *ldev;
+
+ if (!hdev)
+ return ERR_PTR(-ENODEV);
+
+ la = kzalloc(sizeof(*la), GFP_KERNEL);
+ if (!la)
+ return ERR_PTR(-ENOMEM);
+
+ ldev = &la->ldev;
+
+ mutex_init(&ldev->lock);
+ ldev->hdev = hdev;
+ ldev->quirks = lamparray_lookup_quirks(hdev);
+ ldev->use_leds_uapi = 1;
+ ldev->led_registered = false;
+ if (!led_init_state) {
+ ldev->last_r = 255;
+ ldev->last_g = 255;
+ ldev->last_b = 255;
+ ldev->last_brightness = LED_OFF;
+ } else {
+ ldev->last_r = led_init_state->r;
+ ldev->last_g = led_init_state->g;
+ ldev->last_b = led_init_state->b;
+ ldev->last_brightness = led_init_state->brightness;
+ }
+ ret = lamparray_parse_update_report(ldev);
+ if (ret) {
+ hid_err(hdev, "No LampArray update report found: %d\n", ret);
+ goto err_free;
+ }
+
+ ret = lamparray_read_lamp_count(ldev);
+ if (ret) {
+ hid_err(hdev,
+ "Could not determine LampCount. This device needs a quirk for a fixed LampCount: %d\n",
+ ret);
+ goto err_unregister_led;
+ }
+
+ ret = lamparray_register_led(ldev);
+ if (ret) {
+ hid_warn(hdev, "Failed to register LED UAPI: %d\n", ret);
+ mutex_lock(&ldev->lock);
+ ldev->use_leds_uapi = 0;
+ mutex_unlock(&ldev->lock);
+ }
+
+ ret = xa_err(xa_store(&lamparray_by_hdev, (unsigned long)hdev, ldev,
+ GFP_KERNEL));
+ if (ret)
+ goto err_unregister_led;
+
+ ret = lamparray_register_sysfs(ldev);
+ if (ret)
+ goto err_xa_erase;
+
+ ret = lamparray_hw_set_autonomous(ldev, false);
+ if (ret) {
+ hid_err(hdev, "Could not disable autonomous mode: %d", ret);
+ goto err_remove_sysfs;
+ }
+
+ hid_info(hdev, "LampArray device registered\n");
+
+ ret = lamparray_restore_state(ldev);
+ if (ret) {
+ hid_err(hdev, "Failed to set standard state: %d", ret);
+ goto err_remove_sysfs;
+ }
+ return la;
+
+err_remove_sysfs:
+ lamparray_remove_sysfs(ldev);
+err_xa_erase:
+ xa_erase(&lamparray_by_hdev, (unsigned long)hdev);
+err_unregister_led:
+ lamparray_unregister_led(ldev);
+err_free:
+ kfree(la);
+ return ERR_PTR(ret);
+}
+EXPORT_SYMBOL_GPL(lamparray_register);
+
+void lamparray_unregister(struct lamparray *la)
+{
+ struct lamparray_device *ldev;
+
+ if (!la)
+ return;
+
+ ldev = &la->ldev;
+
+ lamparray_unregister_led(ldev);
+ lamparray_remove_sysfs(ldev);
+ xa_erase(&lamparray_by_hdev, (unsigned long)ldev->hdev);
+
+ kfree(la);
+}
+EXPORT_SYMBOL_GPL(lamparray_unregister);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("HID LampArray helper module (single-zone RGB)");
diff --git a/drivers/hid/hid-lamparray.h b/drivers/hid/hid-lamparray.h
new file mode 100644
index 000000000000..ac3edd366a5b
--- /dev/null
+++ b/drivers/hid/hid-lamparray.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _HID_LAMPARRAY_H
+#define _HID_LAMPARRAY_H
+
+#include <linux/types.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+
+struct hid_device;
+struct lamparray;
+
+/*
+ * Optional initial LED state for lamparray_register().
+ * Used to define the initial state of a LampArray's LEDs.
+ */
+struct lamparray_init_state {
+ u8 r;
+ u8 g;
+ u8 b;
+ enum led_brightness brightness;
+};
+
+#if IS_ENABLED(CONFIG_HID_LAMPARRAY)
+
+/**
+ * lamparray_is_supported_device() - check whether a HID device supports LampArray
+ * @hdev: HID device to inspect
+ *
+ * Check whether the given HID device exposes a Lighting/LampArray application
+ * collection as defined by the HID Lighting specification.
+ *
+ * This helper can be used by HID drivers to determine whether LampArray
+ * functionality should be enabled for a device.
+ *
+ * Return: %true if LampArray support is detected, %false otherwise.
+ */
+bool lamparray_is_supported_device(struct hid_device *hdev);
+
+/**
+ * lamparray_register() - initialize LampArray support for a HID device
+ * @hdev: HID device
+ * @led_init_state: Optional LED state at init specification
+ *
+ * Allocate and initialize internal LampArray state for the given HID device.
+ * The function parses required HID reports and fields and registers the
+ * associated miscdevice and sysfs attributes.
+ *
+ * If enabled, a multicolor LED class device is also registered to expose the
+ * LampArray functionality via the LED subsystem. If specified, the desired
+ * initial LED state is applied. If led_init_state is NULL, a default state is
+ * applied.
+ *
+ * Return: pointer to a LampArray handle on success, or ERR_PTR() on failure.
+ */
+struct lamparray *lamparray_register(struct hid_device *hdev,
+ const struct lamparray_init_state *led_init_state);
+
+/**
+ * lamparray_unregister() - tear down LampArray support
+ * @la: LampArray handle returned by lamparray_register()
+ *
+ * Remove all resources associated with a LampArray instance.
+ *
+ * This unregisters the LED class device (if present), removes the miscdevice
+ * and sysfs interfaces and frees all internal state associated with @la.
+ */
+void lamparray_unregister(struct lamparray *la);
+
+#else /* !CONFIG_HID_LAMPARRAY */
+
+static inline bool lamparray_is_supported_device(struct hid_device *hdev)
+{
+ return false;
+}
+
+static inline struct lamparray *
+lamparray_register(struct hid_device *hdev,
+ const struct lamparray_init_state *led_init_state)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void lamparray_unregister(struct lamparray *la)
+{
+}
+
+#endif /* CONFIG_HID_LAMPARRAY */
+
+#endif /* _HID_LAMPARRAY_H */
--
2.43.0
^ permalink raw reply related
* [PATCH v3 9/9] mfd: motorola-cpcap: add support for Mot CPCAP composition
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Add a MFD subdevice composition used in Tegra20 based Mot board
(Motorola Atrix 4G and Droid X2).
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/mfd/motorola-cpcap.c | 50 ++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
index 516d1e33affa..fdec92f5c6b0 100644
--- a/drivers/mfd/motorola-cpcap.c
+++ b/drivers/mfd/motorola-cpcap.c
@@ -335,6 +335,54 @@ static const struct cpcap_chip_data cpcap_mapphone_data = {
.num_devices = ARRAY_SIZE(cpcap_mapphone_mfd_devices),
};
+/*
+ * The Mot board features a USB-PHY and charger similar to the ones in
+ * Mapphone; however, because Mot is based on Tegra20, it is incompatible
+ * with the existing implementation, which is tightly interconnected with
+ * the OMAP USB PHY.
+ */
+static const struct mfd_cell cpcap_mot_mfd_devices[] = {
+ {
+ .name = "cpcap_adc",
+ .of_compatible = "motorola,mot-cpcap-adc",
+ }, {
+ .name = "cpcap_battery",
+ .of_compatible = "motorola,cpcap-battery",
+ }, {
+ .name = "cpcap-regulator",
+ .of_compatible = "motorola,mot-cpcap-regulator",
+ }, {
+ .name = "cpcap-rtc",
+ .of_compatible = "motorola,cpcap-rtc",
+ }, {
+ .name = "cpcap-pwrbutton",
+ .of_compatible = "motorola,cpcap-pwrbutton",
+ }, {
+ .name = "cpcap-led",
+ .id = 0,
+ .of_compatible = "motorola,cpcap-led-red",
+ }, {
+ .name = "cpcap-led",
+ .id = 1,
+ .of_compatible = "motorola,cpcap-led-green",
+ }, {
+ .name = "cpcap-led",
+ .id = 2,
+ .of_compatible = "motorola,cpcap-led-blue",
+ }, {
+ .name = "cpcap-led",
+ .id = 3,
+ .of_compatible = "motorola,cpcap-led-adl",
+ }, {
+ .name = "cpcap-codec",
+ },
+};
+
+static const struct cpcap_chip_data cpcap_mot_data = {
+ .mfd_devices = cpcap_mot_mfd_devices,
+ .num_devices = ARRAY_SIZE(cpcap_mot_mfd_devices),
+};
+
static int cpcap_probe(struct spi_device *spi)
{
struct cpcap_ddata *cpcap;
@@ -389,6 +437,7 @@ static int cpcap_probe(struct spi_device *spi)
static const struct of_device_id cpcap_of_match[] = {
{ .compatible = "motorola,cpcap", .data = &cpcap_default_data },
{ .compatible = "motorola,mapphone-cpcap", .data = &cpcap_mapphone_data },
+ { .compatible = "motorola,mot-cpcap", .data = &cpcap_mot_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, cpcap_of_match);
@@ -396,6 +445,7 @@ MODULE_DEVICE_TABLE(of, cpcap_of_match);
static const struct spi_device_id cpcap_spi_ids[] = {
{ .name = "cpcap", .driver_data = (kernel_ulong_t)&cpcap_default_data },
{ .name = "mapphone-cpcap", .driver_data = (kernel_ulong_t)&cpcap_mapphone_data },
+ { .name = "mot-cpcap", .driver_data = (kernel_ulong_t)&cpcap_mot_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(spi, cpcap_spi_ids);
--
2.51.0
^ permalink raw reply related
* [PATCH v3 8/9] mfd: motorola-cpcap: diverge configuration per-board
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
MFD have rigid subdevice structure which does not allow flexible dynamic
subdevice linking. Address this by diverging CPCAP subdevice composition
to take into account board specific configuration.
Create a common default subdevice composition, rename existing subdevice
composition into cpcap_mapphone_mfd_devices since it targets mainly
Mapphone board.
Removed st,6556002 as it is no longer applicable to all cases and
duplicates motorola,cpcap, which is used as the default composition.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/mfd/motorola-cpcap.c | 101 ++++++++++++++++++++++++++++-------
1 file changed, 83 insertions(+), 18 deletions(-)
diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
index d8243b956f87..516d1e33affa 100644
--- a/drivers/mfd/motorola-cpcap.c
+++ b/drivers/mfd/motorola-cpcap.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/sysfs.h>
@@ -24,10 +25,16 @@
#define CPCAP_REGISTER_SIZE 4
#define CPCAP_REGISTER_BITS 16
+struct cpcap_chip_data {
+ const struct mfd_cell *mfd_devices;
+ unsigned int num_devices;
+};
+
struct cpcap_ddata {
struct spi_device *spi;
struct regmap_irq *irqs;
struct regmap_irq_chip_data *irqdata[CPCAP_NR_IRQ_CHIPS];
+ const struct cpcap_chip_data *cdata;
const struct regmap_config *regmap_conf;
struct regmap *regmap;
};
@@ -195,20 +202,6 @@ static int cpcap_init_irq(struct cpcap_ddata *cpcap)
return 0;
}
-static const struct of_device_id cpcap_of_match[] = {
- { .compatible = "motorola,cpcap", },
- { .compatible = "st,6556002", },
- {},
-};
-MODULE_DEVICE_TABLE(of, cpcap_of_match);
-
-static const struct spi_device_id cpcap_spi_ids[] = {
- { .name = "cpcap", },
- { .name = "6556002", },
- {},
-};
-MODULE_DEVICE_TABLE(spi, cpcap_spi_ids);
-
static const struct regmap_config cpcap_regmap_config = {
.reg_bits = 16,
.reg_stride = 4,
@@ -241,7 +234,56 @@ static int cpcap_resume(struct device *dev)
static DEFINE_SIMPLE_DEV_PM_OPS(cpcap_pm, cpcap_suspend, cpcap_resume);
-static const struct mfd_cell cpcap_mfd_devices[] = {
+static const struct mfd_cell cpcap_default_mfd_devices[] = {
+ {
+ .name = "cpcap_adc",
+ .of_compatible = "motorola,cpcap-adc",
+ }, {
+ .name = "cpcap_battery",
+ .of_compatible = "motorola,cpcap-battery",
+ }, {
+ .name = "cpcap-regulator",
+ .of_compatible = "motorola,cpcap-regulator",
+ }, {
+ .name = "cpcap-rtc",
+ .of_compatible = "motorola,cpcap-rtc",
+ }, {
+ .name = "cpcap-pwrbutton",
+ .of_compatible = "motorola,cpcap-pwrbutton",
+ }, {
+ .name = "cpcap-usb-phy",
+ .of_compatible = "motorola,cpcap-usb-phy",
+ }, {
+ .name = "cpcap-led",
+ .id = 0,
+ .of_compatible = "motorola,cpcap-led-red",
+ }, {
+ .name = "cpcap-led",
+ .id = 1,
+ .of_compatible = "motorola,cpcap-led-green",
+ }, {
+ .name = "cpcap-led",
+ .id = 2,
+ .of_compatible = "motorola,cpcap-led-blue",
+ }, {
+ .name = "cpcap-led",
+ .id = 3,
+ .of_compatible = "motorola,cpcap-led-adl",
+ }, {
+ .name = "cpcap-led",
+ .id = 4,
+ .of_compatible = "motorola,cpcap-led-cp",
+ }, {
+ .name = "cpcap-codec",
+ },
+};
+
+static const struct cpcap_chip_data cpcap_default_data = {
+ .mfd_devices = cpcap_default_mfd_devices,
+ .num_devices = ARRAY_SIZE(cpcap_default_mfd_devices),
+};
+
+static const struct mfd_cell cpcap_mapphone_mfd_devices[] = {
{
.name = "cpcap_adc",
.of_compatible = "motorola,mapphone-cpcap-adc",
@@ -285,7 +327,12 @@ static const struct mfd_cell cpcap_mfd_devices[] = {
.of_compatible = "motorola,cpcap-led-cp",
}, {
.name = "cpcap-codec",
- }
+ },
+};
+
+static const struct cpcap_chip_data cpcap_mapphone_data = {
+ .mfd_devices = cpcap_mapphone_mfd_devices,
+ .num_devices = ARRAY_SIZE(cpcap_mapphone_mfd_devices),
};
static int cpcap_probe(struct spi_device *spi)
@@ -297,6 +344,10 @@ static int cpcap_probe(struct spi_device *spi)
if (!cpcap)
return -ENOMEM;
+ cpcap->cdata = device_get_match_data(&spi->dev);
+ if (!cpcap->cdata)
+ return -ENODEV;
+
cpcap->spi = spi;
spi_set_drvdata(spi, cpcap);
@@ -331,10 +382,24 @@ static int cpcap_probe(struct spi_device *spi)
spi->dev.coherent_dma_mask = 0;
spi->dev.dma_mask = &spi->dev.coherent_dma_mask;
- return devm_mfd_add_devices(&spi->dev, 0, cpcap_mfd_devices,
- ARRAY_SIZE(cpcap_mfd_devices), NULL, 0, NULL);
+ return devm_mfd_add_devices(&spi->dev, 0, cpcap->cdata->mfd_devices,
+ cpcap->cdata->num_devices, NULL, 0, NULL);
}
+static const struct of_device_id cpcap_of_match[] = {
+ { .compatible = "motorola,cpcap", .data = &cpcap_default_data },
+ { .compatible = "motorola,mapphone-cpcap", .data = &cpcap_mapphone_data },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, cpcap_of_match);
+
+static const struct spi_device_id cpcap_spi_ids[] = {
+ { .name = "cpcap", .driver_data = (kernel_ulong_t)&cpcap_default_data },
+ { .name = "mapphone-cpcap", .driver_data = (kernel_ulong_t)&cpcap_mapphone_data },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(spi, cpcap_spi_ids);
+
static struct spi_driver cpcap_driver = {
.driver = {
.name = "cpcap-core",
--
2.51.0
^ permalink raw reply related
* [PATCH v3 7/9] dt-bindings: mfd: motorola-cpcap: document Mapphone and Mot CPCAP
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Add compatibles for Mapphone and Mot CPCAP subdevice compositions. Both
variations cannot use st,6556002 fallback since they may be based on
different controllers.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
.../devicetree/bindings/mfd/motorola,cpcap.yaml | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml b/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
index eea5b2efa80c..487e5456864b 100644
--- a/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
+++ b/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
@@ -14,9 +14,14 @@ allOf:
properties:
compatible:
- items:
- - const: motorola,cpcap
- - const: st,6556002
+ oneOf:
+ - enum:
+ - motorola,mapphone-cpcap
+ - motorola,mot-cpcap
+
+ - items:
+ - const: motorola,cpcap
+ - const: st,6556002
reg:
maxItems: 1
--
2.51.0
^ permalink raw reply related
* [PATCH v3 6/9] dt-bindings: mfd: motorola-cpcap: convert to DT schema
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Convert devicetree bindings for the Motorola CPCAP MFD from TXT to YAML.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
.../bindings/mfd/motorola,cpcap.yaml | 411 ++++++++++++++++++
.../bindings/mfd/motorola-cpcap.txt | 78 ----
2 files changed, 411 insertions(+), 78 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
delete mode 100644 Documentation/devicetree/bindings/mfd/motorola-cpcap.txt
diff --git a/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml b/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
new file mode 100644
index 000000000000..eea5b2efa80c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
@@ -0,0 +1,411 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/motorola,cpcap.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Motorola CPCAP PMIC MFD
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ items:
+ - const: motorola,cpcap
+ - const: st,6556002
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ spi-max-frequency:
+ maximum: 9600000
+
+ spi-cs-high: true
+ spi-cpol: true
+ spi-cpha: true
+
+ adc:
+ $ref: /schemas/iio/adc/motorola,cpcap-adc.yaml
+
+ audio-codec:
+ type: object
+ additionalProperties: false
+
+ properties:
+ interrupts:
+ items:
+ - description: headset detect interrupt
+ - description: microphone bias 2 detect interrupt
+
+ interrupt-names:
+ items:
+ - const: hs
+ - const: mb2
+
+ "#sound-dai-cells":
+ const: 1
+
+ VAUDIO-supply:
+ description:
+ Codec power supply, usually VAUDIO regulator of CPCAP.
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: port connected to the Stereo HiFi DAC
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: port connected to the Voice DAC
+
+ required:
+ - port@0
+ - port@1
+
+ required:
+ - interrupts
+ - interrupt-names
+ - "#sound-dai-cells"
+
+ battery:
+ $ref: /schemas/power/supply/cpcap-battery.yaml
+
+ charger:
+ $ref: /schemas/power/supply/cpcap-charger.yaml
+
+ key-power:
+ $ref: /schemas/input/motorola,cpcap-pwrbutton.yaml
+
+ phy:
+ $ref: /schemas/phy/motorola,cpcap-usb-phy.yaml
+
+ regulator:
+ $ref: /schemas/regulator/motorola,cpcap-regulator.yaml
+
+ rtc:
+ $ref: /schemas/rtc/motorola,cpcap-rtc.yaml
+
+patternProperties:
+ "^led(-[a-z]+)?$":
+ $ref: /schemas/leds/motorola,cpcap-leds.yaml
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - "#address-cells"
+ - "#size-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/input/linux-event-codes.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpcap: pmic@0 {
+ compatible = "motorola,cpcap", "st,6556002";
+ reg = <0>; /* cs0 */
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <7 IRQ_TYPE_EDGE_RISING>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ spi-max-frequency = <3000000>;
+ spi-cs-high;
+
+ spi-cpol;
+ spi-cpha;
+
+ cpcap_adc: adc {
+ compatible = "motorola,cpcap-adc";
+
+ interrupt-parent = <&cpcap>;
+ interrupts = <8 IRQ_TYPE_NONE>;
+ interrupt-names = "adcdone";
+
+ #io-channel-cells = <1>;
+ };
+
+ cpcap_audio: audio-codec {
+ interrupt-parent = <&cpcap>;
+ interrupts = <9 IRQ_TYPE_NONE>, <10 IRQ_TYPE_NONE>;
+ interrupt-names = "hs", "mb2";
+
+ VAUDIO-supply = <&vdd_audio>;
+
+ #sound-dai-cells = <1>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* HiFi */
+ port@0 {
+ reg = <0>;
+
+ cpcap_audio_codec0: endpoint {
+ };
+ };
+
+ /* Voice */
+ port@1 {
+ reg = <1>;
+
+ cpcap_audio_codec1: endpoint {
+ };
+ };
+ };
+ };
+
+ cpcap_battery: battery {
+ compatible = "motorola,cpcap-battery";
+
+ interrupt-parent = <&cpcap>;
+ interrupts = <6 IRQ_TYPE_NONE>, <5 IRQ_TYPE_NONE>,
+ <3 IRQ_TYPE_NONE>, <20 IRQ_TYPE_NONE>,
+ <54 IRQ_TYPE_NONE>, <57 IRQ_TYPE_NONE>;
+ interrupt-names = "eol", "lowbph", "lowbpl",
+ "chrgcurr1", "battdetb", "cccal";
+
+ io-channels = <&cpcap_adc 0>, <&cpcap_adc 1>,
+ <&cpcap_adc 5>, <&cpcap_adc 6>;
+ io-channel-names = "battdetb", "battp",
+ "chg_isense", "batti";
+ power-supplies = <&cpcap_charger>;
+ };
+
+ cpcap_charger: charger {
+ compatible = "motorola,mapphone-cpcap-charger";
+
+ interrupt-parent = <&cpcap>;
+ interrupts = <13 IRQ_TYPE_NONE>, <12 IRQ_TYPE_NONE>,
+ <29 IRQ_TYPE_NONE>, <28 IRQ_TYPE_NONE>,
+ <22 IRQ_TYPE_NONE>, <21 IRQ_TYPE_NONE>,
+ <20 IRQ_TYPE_NONE>, <19 IRQ_TYPE_NONE>,
+ <54 IRQ_TYPE_NONE>;
+ interrupt-names = "chrg_det", "rvrs_chrg", "chrg_se1b",
+ "se0conn", "rvrs_mode", "chrgcurr2",
+ "chrgcurr1", "vbusvld", "battdetb";
+
+ mode-gpios = <&gpio3 29 GPIO_ACTIVE_LOW>,
+ <&gpio3 23 GPIO_ACTIVE_LOW>;
+
+ io-channels = <&cpcap_adc 0>, <&cpcap_adc 1>,
+ <&cpcap_adc 2>, <&cpcap_adc 5>,
+ <&cpcap_adc 6>;
+ io-channel-names = "battdetb", "battp",
+ "vbus", "chg_isense",
+ "batti";
+ };
+
+ key-power {
+ compatible = "motorola,cpcap-pwrbutton";
+
+ interrupt-parent = <&cpcap>;
+ interrupts = <23 IRQ_TYPE_NONE>;
+ };
+
+ led-red {
+ compatible = "motorola,cpcap-led-red";
+ vdd-supply = <&vdd_led>;
+ label = "status-led::red";
+ };
+
+ led-green {
+ compatible = "motorola,cpcap-led-green";
+ vdd-supply = <&vdd_led>;
+ label = "status-led::green";
+ };
+
+ led-blue {
+ compatible = "motorola,cpcap-led-blue";
+ vdd-supply = <&vdd_led>;
+ label = "status-led::blue";
+ };
+
+ cpcap_usb2_phy: phy {
+ compatible = "motorola,cpcap-usb-phy";
+
+ pinctrl-0 = <&usb_gpio_mux_sel1>, <&usb_gpio_mux_sel2>;
+ pinctrl-1 = <&usb_ulpi_pins>;
+ pinctrl-2 = <&usb_utmi_pins>;
+ pinctrl-3 = <&uart3_pins>;
+ pinctrl-names = "default", "ulpi", "utmi", "uart";
+ #phy-cells = <0>;
+
+ interrupts-extended =
+ <&cpcap 15 IRQ_TYPE_NONE>, <&cpcap 14 IRQ_TYPE_NONE>,
+ <&cpcap 28 IRQ_TYPE_NONE>, <&cpcap 19 IRQ_TYPE_NONE>,
+ <&cpcap 18 IRQ_TYPE_NONE>, <&cpcap 17 IRQ_TYPE_NONE>,
+ <&cpcap 16 IRQ_TYPE_NONE>, <&cpcap 49 IRQ_TYPE_NONE>,
+ <&cpcap 48 IRQ_TYPE_NONE>;
+ interrupt-names = "id_ground", "id_float", "se0conn",
+ "vbusvld", "sessvld", "sessend",
+ "se1", "dm", "dp";
+
+ mode-gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>,
+ <&gpio1 0 GPIO_ACTIVE_HIGH>;
+
+ io-channels = <&cpcap_adc 2>, <&cpcap_adc 7>;
+ io-channel-names = "vbus", "id";
+
+ vusb-supply = <&avdd_usb>;
+ };
+
+ regulator {
+ compatible = "motorola,cpcap-regulator";
+
+ regulators {
+ vdd_cpu: SW1 {
+ regulator-name = "vdd_cpu";
+ regulator-min-microvolt = <750000>;
+ regulator-max-microvolt = <1125000>;
+ regulator-enable-ramp-delay = <1500>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_core: SW2 {
+ regulator-name = "vdd_core";
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-enable-ramp-delay = <1500>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_1v8_vio: SW3 {
+ regulator-name = "vdd_1v8_vio";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-enable-ramp-delay = <0>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_aon: SW4 {
+ regulator-name = "vdd_aon";
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-enable-ramp-delay = <1500>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_led: SW5 {
+ regulator-name = "vdd_led";
+ regulator-min-microvolt = <5050000>;
+ regulator-max-microvolt = <5050000>;
+ regulator-enable-ramp-delay = <1500>;
+ regulator-boot-on;
+ };
+
+ vdd_hvio: VHVIO {
+ regulator-name = "vdd_hvio";
+ regulator-min-microvolt = <2775000>;
+ regulator-max-microvolt = <2775000>;
+ regulator-enable-ramp-delay = <1000>;
+ };
+
+ vcore_emmc: VSDIO {
+ regulator-name = "vcore_emmc";
+ regulator-min-microvolt = <1500000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-enable-ramp-delay = <1000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ avdd_dsi_csi: VCSI {
+ regulator-name = "avdd_dsi_csi";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-enable-ramp-delay = <1000>;
+ regulator-boot-on;
+ };
+
+ avdd_3v3_periph: VWLAN2 {
+ regulator-name = "avdd_3v3_periph";
+ regulator-min-microvolt = <2775000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-enable-ramp-delay = <1000>;
+ regulator-boot-on;
+ };
+
+ vddio_usd: VSIMCARD {
+ regulator-name = "vddio_usd";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2900000>;
+ regulator-enable-ramp-delay = <1000>;
+ regulator-boot-on;
+ };
+
+ vdd_haptic: VVIB {
+ regulator-name = "vdd_haptic";
+ regulator-min-microvolt = <1300000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-enable-ramp-delay = <1000>;
+ };
+
+ avdd_usb: VUSB {
+ regulator-name = "avdd_usb";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-enable-ramp-delay = <1000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_audio: VAUDIO {
+ regulator-name = "vdd_audio";
+ regulator-min-microvolt = <2775000>;
+ regulator-max-microvolt = <2775000>;
+ regulator-enable-ramp-delay = <1000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+ };
+ };
+
+ cpcap_rtc: rtc {
+ compatible = "motorola,cpcap-rtc";
+
+ interrupt-parent = <&cpcap>;
+ interrupts = <39 IRQ_TYPE_NONE>, <26 IRQ_TYPE_NONE>;
+ };
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/mfd/motorola-cpcap.txt b/Documentation/devicetree/bindings/mfd/motorola-cpcap.txt
deleted file mode 100644
index 18c3fc26ca93..000000000000
--- a/Documentation/devicetree/bindings/mfd/motorola-cpcap.txt
+++ /dev/null
@@ -1,78 +0,0 @@
-Motorola CPCAP PMIC device tree binding
-
-Required properties:
-- compatible : One or both of "motorola,cpcap" or "ste,6556002"
-- reg : SPI chip select
-- interrupts : The interrupt line the device is connected to
-- interrupt-controller : Marks the device node as an interrupt controller
-- #interrupt-cells : The number of cells to describe an IRQ, should be 2
-- #address-cells : Child device offset number of cells, should be 1
-- #size-cells : Child device size number of cells, should be 0
-- spi-max-frequency : Typically set to 3000000
-- spi-cs-high : SPI chip select direction
-
-Optional subnodes:
-
-The sub-functions of CPCAP get their own node with their own compatible values,
-which are described in the following files:
-
-- Documentation/devicetree/bindings/power/supply/cpcap-battery.yaml
-- Documentation/devicetree/bindings/power/supply/cpcap-charger.yaml
-- Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
-- Documentation/devicetree/bindings/phy/motorola,cpcap-usb-phy.yaml
-- Documentation/devicetree/bindings/input/cpcap-pwrbutton.txt
-- Documentation/devicetree/bindings/rtc/cpcap-rtc.txt
-- Documentation/devicetree/bindings/leds/leds-cpcap.txt
-- Documentation/devicetree/bindings/iio/adc/motorola,cpcap-adc.yaml
-
-The only exception is the audio codec. Instead of a compatible value its
-node must be named "audio-codec".
-
-Required properties for the audio-codec subnode:
-
-- #sound-dai-cells = <1>;
-- interrupts : should contain jack detection interrupts, with headset
- detect interrupt matching "hs" and microphone bias 2
- detect interrupt matching "mb2" in interrupt-names.
-- interrupt-names : Contains "hs", "mb2"
-
-The audio-codec provides two DAIs. The first one is connected to the
-Stereo HiFi DAC and the second one is connected to the Voice DAC.
-
-Example:
-
-&mcspi1 {
- cpcap: pmic@0 {
- compatible = "motorola,cpcap", "ste,6556002";
- reg = <0>; /* cs0 */
- interrupt-parent = <&gpio1>;
- interrupts = <7 IRQ_TYPE_EDGE_RISING>;
- interrupt-controller;
- #interrupt-cells = <2>;
- #address-cells = <1>;
- #size-cells = <0>;
- spi-max-frequency = <3000000>;
- spi-cs-high;
-
- audio-codec {
- #sound-dai-cells = <1>;
- interrupts-extended = <&cpcap 9 0>, <&cpcap 10 0>;
- interrupt-names = "hs", "mb2";
-
- /* HiFi */
- port@0 {
- endpoint {
- remote-endpoint = <&cpu_dai1>;
- };
- };
-
- /* Voice */
- port@1 {
- endpoint {
- remote-endpoint = <&cpu_dai2>;
- };
- };
- };
- };
-};
-
--
2.51.0
^ permalink raw reply related
* [PATCH v3 5/9] dt-bindings: input: cpcap-pwrbutton: convert to DT schema
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Convert power button devicetree bindings for the Motorola CPCAP MFD from
TXT to YAML format. This patch does not change any functionality; the
bindings remain the same.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
.../bindings/input/cpcap-pwrbutton.txt | 20 ------------
.../input/motorola,cpcap-pwrbutton.yaml | 32 +++++++++++++++++++
2 files changed, 32 insertions(+), 20 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/input/cpcap-pwrbutton.txt
create mode 100644 Documentation/devicetree/bindings/input/motorola,cpcap-pwrbutton.yaml
diff --git a/Documentation/devicetree/bindings/input/cpcap-pwrbutton.txt b/Documentation/devicetree/bindings/input/cpcap-pwrbutton.txt
deleted file mode 100644
index 0dd0076daf71..000000000000
--- a/Documentation/devicetree/bindings/input/cpcap-pwrbutton.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-Motorola CPCAP on key
-
-This module is part of the CPCAP. For more details about the whole
-chip see Documentation/devicetree/bindings/mfd/motorola-cpcap.txt.
-
-This module provides a simple power button event via an Interrupt.
-
-Required properties:
-- compatible: should be one of the following
- - "motorola,cpcap-pwrbutton"
-- interrupts: irq specifier for CPCAP's ON IRQ
-
-Example:
-
-&cpcap {
- cpcap_pwrbutton: pwrbutton {
- compatible = "motorola,cpcap-pwrbutton";
- interrupts = <23 IRQ_TYPE_NONE>;
- };
-};
diff --git a/Documentation/devicetree/bindings/input/motorola,cpcap-pwrbutton.yaml b/Documentation/devicetree/bindings/input/motorola,cpcap-pwrbutton.yaml
new file mode 100644
index 000000000000..77a3e5a47d1a
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/motorola,cpcap-pwrbutton.yaml
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/motorola,cpcap-pwrbutton.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Motorola CPCAP PMIC power key
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+description:
+ This module is part of the Motorola CPCAP MFD device. For more details
+ see Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml. The
+ power key is represented as a sub-node of the PMIC node on the device
+ tree.
+
+properties:
+ compatible:
+ const: motorola,cpcap-pwrbutton
+
+ interrupts:
+ items:
+ - description: CPCAP's ON interrupt
+
+required:
+ - compatible
+ - interrupts
+
+additionalProperties: false
+
+...
--
2.51.0
^ permalink raw reply related
* [PATCH v3 4/9] dt-bindings: leds: leds-cpcap: convert to DT schema
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Convert LEDs devicetree bindings for the Motorola CPCAP MFD from TXT to
YAML format. This patch does not change any functionality; the bindings
remain the same.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
.../devicetree/bindings/leds/leds-cpcap.txt | 29 -------------
.../bindings/leds/motorola,cpcap-leds.yaml | 42 +++++++++++++++++++
2 files changed, 42 insertions(+), 29 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/leds/leds-cpcap.txt
create mode 100644 Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml
diff --git a/Documentation/devicetree/bindings/leds/leds-cpcap.txt b/Documentation/devicetree/bindings/leds/leds-cpcap.txt
deleted file mode 100644
index ebf7cdc7f70c..000000000000
--- a/Documentation/devicetree/bindings/leds/leds-cpcap.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-Motorola CPCAP PMIC LEDs
-------------------------
-
-This module is part of the CPCAP. For more details about the whole
-chip see Documentation/devicetree/bindings/mfd/motorola-cpcap.txt.
-
-Requires node properties:
-- compatible: should be one of
- * "motorola,cpcap-led-mdl" (Main Display Lighting)
- * "motorola,cpcap-led-kl" (Keyboard Lighting)
- * "motorola,cpcap-led-adl" (Aux Display Lighting)
- * "motorola,cpcap-led-red" (Red Triode)
- * "motorola,cpcap-led-green" (Green Triode)
- * "motorola,cpcap-led-blue" (Blue Triode)
- * "motorola,cpcap-led-cf" (Camera Flash)
- * "motorola,cpcap-led-bt" (Bluetooth)
- * "motorola,cpcap-led-cp" (Camera Privacy LED)
-- label: see Documentation/devicetree/bindings/leds/common.txt
-- vdd-supply: A phandle to the regulator powering the LED
-
-Example:
-
-&cpcap {
- cpcap_led_red: red-led {
- compatible = "motorola,cpcap-led-red";
- label = "cpcap:red";
- vdd-supply = <&sw5>;
- };
-};
diff --git a/Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml b/Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml
new file mode 100644
index 000000000000..c8e7b88a05cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/motorola,cpcap-leds.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Motorola CPCAP PMIC LEDs
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+description:
+ This module is part of the Motorola CPCAP MFD device. For more details
+ see Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml. LEDs are
+ represented as sub-nodes of the PMIC node on the device tree.
+
+allOf:
+ - $ref: /schemas/leds/common.yaml#
+
+properties:
+ compatible:
+ enum:
+ - motorola,cpcap-led-adl # Display Lighting
+ - motorola,cpcap-led-blue # Blue Triode
+ - motorola,cpcap-led-bt # Bluetooth
+ - motorola,cpcap-led-cf # Camera Flash
+ - motorola,cpcap-led-cp # Camera Privacy LED
+ - motorola,cpcap-led-green # Green Triode
+ - motorola,cpcap-led-kl # Keyboard Lighting
+ - motorola,cpcap-led-mdl # Main Display Lighting
+ - motorola,cpcap-led-red # Red Triode
+
+ vdd-supply: true
+
+required:
+ - compatible
+ - label
+ - vdd-supply
+
+unevaluatedProperties: false
+
+...
--
2.51.0
^ permalink raw reply related
* [PATCH v3 3/9] regulator: cpcap-regulator: add support for Mot regulators
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Add support for regulator set used in Motorola Mot board, used as a base
for Atrix 4G and Droid X2 smartphones.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/regulator/cpcap-regulator.c | 105 ++++++++++++++++++++++++++++
1 file changed, 105 insertions(+)
diff --git a/drivers/regulator/cpcap-regulator.c b/drivers/regulator/cpcap-regulator.c
index 6958d154442b..63f5c90ddf50 100644
--- a/drivers/regulator/cpcap-regulator.c
+++ b/drivers/regulator/cpcap-regulator.c
@@ -261,6 +261,30 @@ static const struct regulator_ops cpcap_regulator_ops = {
};
static const unsigned int unknown_val_tbl[] = { 0, };
+static const unsigned int sw_mot_val_tbl[] = { 600000, 612500, 625000,
+ 637500, 650000, 662500,
+ 675000, 687500, 700000,
+ 712500, 725000, 737500,
+ 750000, 762500, 775000,
+ 787500, 800000, 812500,
+ 825000, 837500, 850000,
+ 862500, 875000, 887500,
+ 900000, 912500, 925000,
+ 937500, 950000, 962500,
+ 975000, 987500, 1000000,
+ 1012500, 1025000, 1037500,
+ 1050000, 1062500, 1075000,
+ 1087500, 1100000, 1112500,
+ 1125000, 1137500, 1150000,
+ 1162500, 1175000, 1187500,
+ 1200000, 1212500, 1225000,
+ 1237500, 1250000, 1262500,
+ 1275000, 1287500, 1300000,
+ 1312500, 1325000, 1337500,
+ 1350000, 1362500, 1375000,
+ 1387500, 1400000, 1412500,
+ 1425000, 1437500, 1450000,
+ 1462500, 1475000, };
static const unsigned int sw2_sw4_val_tbl[] = { 612500, 625000, 637500,
650000, 662500, 675000,
687500, 700000, 712500,
@@ -284,6 +308,7 @@ static const unsigned int sw2_sw4_val_tbl[] = { 612500, 625000, 637500,
1362500, 1375000, 1387500,
1400000, 1412500, 1425000,
1437500, 1450000, 1462500, };
+static const unsigned int sw3_val_tbl[] = { 1350000, 1800000, 1850000, 1875000, };
static const unsigned int sw5_val_tbl[] = { 0, 5050000, };
static const unsigned int vcam_val_tbl[] = { 2600000, 2700000, 2800000,
2900000, };
@@ -402,6 +427,82 @@ static const struct cpcap_regulator omap4_regulators[] = {
{ /* sentinel */ },
};
+static const struct cpcap_regulator mot_regulators[] = {
+ CPCAP_REG(SW1, CPCAP_REG_S1C1, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_SW1_SEL, sw_mot_val_tbl,
+ 0x6f00, 0x7f, 0x6800, 0, 0),
+ CPCAP_REG(SW2, CPCAP_REG_S2C1, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_SW2_SEL, sw_mot_val_tbl,
+ 0x6f00, 0x7f, 0x4804, 0, 0),
+ CPCAP_REG(SW3, CPCAP_REG_S3C, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_SW3_SEL, sw3_val_tbl,
+ 0x578, 0x3, 0x043c, 0, 0),
+ CPCAP_REG(SW4, CPCAP_REG_S4C1, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_SW4_SEL, sw_mot_val_tbl,
+ 0x6f00, 0x7f, 0x4909, 0, 0),
+ CPCAP_REG(SW5, CPCAP_REG_S5C, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_SW5_SEL, sw5_val_tbl,
+ 0x28, 0, 0x20, 0, 0),
+ CPCAP_REG(SW6, CPCAP_REG_S6C, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_SW6_SEL, unknown_val_tbl,
+ 0, 0, 0, 0, 0),
+ CPCAP_REG(VCAM, CPCAP_REG_VCAMC, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_VCAM_SEL, vcam_val_tbl,
+ 0x87, 0x30, 0x7, 0, 420),
+ CPCAP_REG(VCSI, CPCAP_REG_VCSIC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VCSI_SEL, vcsi_val_tbl,
+ 0x47, 0x10, 0x7, 0, 350),
+ CPCAP_REG(VDAC, CPCAP_REG_VDACC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VDAC_SEL, vdac_val_tbl,
+ 0x87, 0x30, 0x0, 0, 420),
+ CPCAP_REG(VDIG, CPCAP_REG_VDIGC, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_VDIG_SEL, vdig_val_tbl,
+ 0x87, 0x30, 0x0, 0, 420),
+ CPCAP_REG(VFUSE, CPCAP_REG_VFUSEC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VFUSE_SEL, vfuse_val_tbl,
+ 0xa0, 0xf, 0x0, 0, 420),
+ CPCAP_REG(VHVIO, CPCAP_REG_VHVIOC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VHVIO_SEL, vhvio_val_tbl,
+ 0x17, 0, 0x2, 0, 0),
+ CPCAP_REG(VSDIO, CPCAP_REG_VSDIOC, CPCAP_REG_ASSIGN2,
+ CPCAP_BIT_VSDIO_SEL, vsdio_val_tbl,
+ 0x87, 0x38, 0x2, 0, 420),
+ CPCAP_REG(VPLL, CPCAP_REG_VPLLC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VPLL_SEL, vpll_val_tbl,
+ 0x47, 0x18, 0x1, 0, 420),
+ CPCAP_REG(VRF1, CPCAP_REG_VRF1C, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VRF1_SEL, vrf1_val_tbl,
+ 0xac, 0x2, 0, 0, 10),
+ CPCAP_REG(VRF2, CPCAP_REG_VRF2C, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VRF2_SEL, vrf2_val_tbl,
+ 0x23, 0x8, 0, 0, 10),
+ CPCAP_REG(VRFREF, CPCAP_REG_VRFREFC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VRFREF_SEL, vrfref_val_tbl,
+ 0x23, 0x8, 0, 0, 420),
+ CPCAP_REG(VWLAN1, CPCAP_REG_VWLAN1C, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VWLAN1_SEL, vwlan1_val_tbl,
+ 0x47, 0x10, 0x5, 0, 420),
+ CPCAP_REG(VWLAN2, CPCAP_REG_VWLAN2C, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VWLAN2_SEL, vwlan2_val_tbl,
+ 0x20c, 0xc0, 0xd, 0, 420),
+ CPCAP_REG(VSIM, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
+ 0xffff, vsim_val_tbl,
+ 0x23, 0x8, 0, 0, 420),
+ CPCAP_REG(VSIMCARD, CPCAP_REG_VSIMC, CPCAP_REG_ASSIGN3,
+ 0xffff, vsimcard_val_tbl,
+ 0x1e80, 0x8, 0x1e00, 0, 420),
+ CPCAP_REG(VVIB, CPCAP_REG_VVIBC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VVIB_SEL, vvib_val_tbl,
+ 0x1, 0xc, 0x1, 0, 500),
+ CPCAP_REG(VUSB, CPCAP_REG_VUSBC, CPCAP_REG_ASSIGN3,
+ CPCAP_BIT_VUSB_SEL, vusb_val_tbl,
+ 0x11c, 0x40, 0xc, 0, 0),
+ CPCAP_REG(VAUDIO, CPCAP_REG_VAUDIOC, CPCAP_REG_ASSIGN4,
+ CPCAP_BIT_VAUDIO_SEL, vaudio_val_tbl,
+ 0x16, 0x1, 0x5, 0, 0),
+ { /* sentinel */ }
+};
+
static const struct cpcap_regulator xoom_regulators[] = {
CPCAP_REG(SW1, CPCAP_REG_S1C1, CPCAP_REG_ASSIGN2,
CPCAP_BIT_SW1_SEL, unknown_val_tbl,
@@ -486,6 +587,10 @@ static const struct of_device_id cpcap_regulator_id_table[] = {
.compatible = "motorola,mapphone-cpcap-regulator",
.data = omap4_regulators,
},
+ {
+ .compatible = "motorola,mot-cpcap-regulator",
+ .data = mot_regulators,
+ },
{
.compatible = "motorola,xoom-cpcap-regulator",
.data = xoom_regulators,
--
2.51.0
^ permalink raw reply related
* [PATCH v3 2/9] dt-bindings: regulator: cpcap-regulator: document Mot regulator
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Document regulator composition used by the CPCAP of Tegra20 Mot board,
that is a base for Atrix 4G and Droid X2.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
---
.../devicetree/bindings/regulator/motorola,cpcap-regulator.yaml | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml b/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
index ed28d2653a55..1a44c8e61243 100644
--- a/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
@@ -20,6 +20,7 @@ properties:
enum:
- motorola,cpcap-regulator
- motorola,mapphone-cpcap-regulator
+ - motorola,mot-cpcap-regulator
- motorola,xoom-cpcap-regulator
regulators:
--
2.51.0
^ permalink raw reply related
* [PATCH v3 1/9] dt-bindings: regulator: cpcap-regulator: convert to DT schema
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
In-Reply-To: <20260223063858.12208-1-clamor95@gmail.com>
Convert devicetree bindings for the Motorola CPCAP MFD regulator subnode
from TXT to YAML format. Main functionality preserved.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
.../bindings/regulator/cpcap-regulator.txt | 35 --------------
.../regulator/motorola,cpcap-regulator.yaml | 46 +++++++++++++++++++
2 files changed, 46 insertions(+), 35 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
create mode 100644 Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
diff --git a/Documentation/devicetree/bindings/regulator/cpcap-regulator.txt b/Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
deleted file mode 100644
index 36f5e2f5cc0f..000000000000
--- a/Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-Motorola CPCAP PMIC voltage regulators
-------------------------------------
-
-Requires node properties:
-- "compatible" value one of:
- "motorola,cpcap-regulator"
- "motorola,mapphone-cpcap-regulator"
- "motorola,xoom-cpcap-regulator"
-
-Required regulator properties:
-- "regulator-name"
-- "regulator-enable-ramp-delay"
-- "regulator-min-microvolt"
-- "regulator-max-microvolt"
-
-Optional regulator properties:
-- "regulator-boot-on"
-
-See Documentation/devicetree/bindings/regulator/regulator.txt
-for more details about the regulator properties.
-
-Example:
-
-cpcap_regulator: regulator {
- compatible = "motorola,cpcap-regulator";
-
- cpcap_regulators: regulators {
- sw5: SW5 {
- regulator-min-microvolt = <5050000>;
- regulator-max-microvolt = <5050000>;
- regulator-enable-ramp-delay = <50000>;
- regulator-boot-on;
- };
- };
-};
diff --git a/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml b/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
new file mode 100644
index 000000000000..ed28d2653a55
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/motorola,cpcap-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Motorola CPCAP PMIC regulators
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+description:
+ This module is part of the Motorola CPCAP MFD device. For more details
+ see Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml. The
+ regulator controller is represented as a sub-node of the PMIC node
+ on the device tree.
+
+properties:
+ compatible:
+ enum:
+ - motorola,cpcap-regulator
+ - motorola,mapphone-cpcap-regulator
+ - motorola,xoom-cpcap-regulator
+
+ regulators:
+ type: object
+
+ patternProperties:
+ "^(SW[1-6]|V(CAM|CSI|DAC|DIG|FUSE|HVIO|SDIO|PLL|RF[12]|RFREF|WLAN[12]|SIM|SIMCARD|VIB|USB|AUDIO))$":
+ $ref: /schemas/regulator/regulator.yaml#
+ type: object
+
+ required:
+ - regulator-name
+ - regulator-enable-ramp-delay
+ - regulator-min-microvolt
+ - regulator-max-microvolt
+
+ unevaluatedProperties: false
+
+required:
+ - compatible
+
+additionalProperties: false
+
+...
--
2.51.0
^ permalink raw reply related
* [PATCH v3 0/9] mfd: cpcap: convert documentation to schema and add Mot board support
From: Svyatoslav Ryhel @ 2026-02-23 6:38 UTC (permalink / raw)
To: Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Lee Jones, Pavel Machek, Liam Girdwood, Mark Brown,
Svyatoslav Ryhel, David Lechner, Tony Lindgren
Cc: linux-input, devicetree, linux-kernel, linux-leds
The initial goal was only to add support for the CPCAP used in the Mot
Tegra20 board; however, since the documentation was already partially
converted, I decided to complete the conversion to schema too.
The CPCAP regulator, leds, rtc, pwrbutton and core files were converted
from TXT to YAML while preserving the original structure. Mot board
compatibility was added to the regulator and core schema. Since these
were one-line patches, they were not separated into dedicated commits;
however, the commit message notes this for both cases.
Finally, the CPCAP MFD was slightly refactored to improve support for
multiple subcell compositions.
---
Changes in v2:
- fixed code style
- rtc conversion was picked, so patch dropped
- added audio ports description into mfd schema
- splitted schema conversion and compatible addition
- minor style improvements and typo fixes
Changes in v3:
- added regulator node names list into pattern
- filled spi_device_id with driver data
- ADC patches were picked, so changes dropped
---
Svyatoslav Ryhel (9):
dt-bindings: regulator: cpcap-regulator: convert to DT schema
dt-bindings: regulator: cpcap-regulator: document Mot regulator
regulator: cpcap-regulator: add support for Mot regulators
dt-bindings: leds: leds-cpcap: convert to DT schema
dt-bindings: input: cpcap-pwrbutton: convert to DT schema
dt-bindings: mfd: motorola-cpcap: convert to DT schema
dt-bindings: mfd: motorola-cpcap: document Mapphone and Mot CPCAP
mfd: motorola-cpcap: diverge configuration per-board
mfd: motorola-cpcap: add support for Mot CPCAP composition
.../bindings/input/cpcap-pwrbutton.txt | 20 -
.../input/motorola,cpcap-pwrbutton.yaml | 32 ++
.../devicetree/bindings/leds/leds-cpcap.txt | 29 --
.../bindings/leds/motorola,cpcap-leds.yaml | 42 ++
.../bindings/mfd/motorola,cpcap.yaml | 416 ++++++++++++++++++
.../bindings/mfd/motorola-cpcap.txt | 78 ----
.../bindings/regulator/cpcap-regulator.txt | 35 --
.../regulator/motorola,cpcap-regulator.yaml | 47 ++
drivers/mfd/motorola-cpcap.c | 151 ++++++-
drivers/regulator/cpcap-regulator.c | 105 +++++
10 files changed, 775 insertions(+), 180 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/input/cpcap-pwrbutton.txt
create mode 100644 Documentation/devicetree/bindings/input/motorola,cpcap-pwrbutton.yaml
delete mode 100644 Documentation/devicetree/bindings/leds/leds-cpcap.txt
create mode 100644 Documentation/devicetree/bindings/leds/motorola,cpcap-leds.yaml
create mode 100644 Documentation/devicetree/bindings/mfd/motorola,cpcap.yaml
delete mode 100644 Documentation/devicetree/bindings/mfd/motorola-cpcap.txt
delete mode 100644 Documentation/devicetree/bindings/regulator/cpcap-regulator.txt
create mode 100644 Documentation/devicetree/bindings/regulator/motorola,cpcap-regulator.yaml
--
2.51.0
^ permalink raw reply
* [PATCH v4 7/7] power: supply: Add charger driver for Asus Transformers
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Add support for charger detection capabilities found in the embedded
controller of ASUS Transformer devices.
Suggested-by: Maxim Schwalm <maxim.schwalm@gmail.com>
Suggested-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/power/supply/Kconfig | 11 +
drivers/power/supply/Makefile | 1 +
.../supply/asus-transformer-ec-charger.c | 193 ++++++++++++++++++
3 files changed, 205 insertions(+)
create mode 100644 drivers/power/supply/asus-transformer-ec-charger.c
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 3c46b412632d..56800aab82f9 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -497,6 +497,17 @@ config CHARGER_88PM860X
help
Say Y here to enable charger for Marvell 88PM860x chip.
+config CHARGER_ASUS_TRANSFORMER_EC
+ tristate "Asus Transformer's charger driver"
+ depends on MFD_ASUS_TRANSFORMER_EC
+ help
+ Say Y here to enable support AC plug detection on Asus Transformer
+ Dock.
+
+ This sub-driver supports charger detection mechanism found in Asus
+ Transformer tablets and mobile docks and controlled by special
+ embedded controller.
+
config CHARGER_PF1550
tristate "NXP PF1550 battery charger driver"
depends on MFD_PF1550
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index aa5e6b05b018..24679f09bb61 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_CHARGER_RT9471) += rt9471.o
obj-$(CONFIG_CHARGER_RT9756) += rt9756.o
obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o
obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o
+obj-$(CONFIG_CHARGER_ASUS_TRANSFORMER_EC) += asus-transformer-ec-charger.o
obj-$(CONFIG_CHARGER_PF1550) += pf1550-charger.o
obj-$(CONFIG_BATTERY_RX51) += rx51_battery.o
obj-$(CONFIG_AB8500_BM) += ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o ab8500_chargalg.o
diff --git a/drivers/power/supply/asus-transformer-ec-charger.c b/drivers/power/supply/asus-transformer-ec-charger.c
new file mode 100644
index 000000000000..de01f0bf2fd7
--- /dev/null
+++ b/drivers/power/supply/asus-transformer-ec-charger.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/err.h>
+#include <linux/mfd/asus-transformer-ec.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/property.h>
+
+struct asus_ec_charger_data {
+ struct notifier_block nb;
+ const struct asusec_info *ec;
+ struct power_supply *psy;
+ struct power_supply_desc psy_desc;
+};
+
+static enum power_supply_property asus_ec_charger_properties[] = {
+ POWER_SUPPLY_PROP_USB_TYPE,
+ POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+};
+
+static int asus_ec_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct asus_ec_charger_data *priv = power_supply_get_drvdata(psy);
+ enum power_supply_usb_type psu;
+ int ret;
+ u64 ctl;
+
+ ret = asus_ec_get_ctl(priv->ec, &ctl);
+ if (ret)
+ return ret;
+
+ switch (ctl & (ASUSEC_CTL_FULL_POWER_SOURCE | ASUSEC_CTL_DIRECT_POWER_SOURCE)) {
+ case ASUSEC_CTL_FULL_POWER_SOURCE:
+ psu = POWER_SUPPLY_USB_TYPE_CDP; /* DOCK */
+ break;
+ case ASUSEC_CTL_DIRECT_POWER_SOURCE:
+ psu = POWER_SUPPLY_USB_TYPE_SDP; /* USB */
+ break;
+ case 0:
+ psu = POWER_SUPPLY_USB_TYPE_UNKNOWN; /* no power source connected */
+ break;
+ default:
+ psu = POWER_SUPPLY_USB_TYPE_ACA; /* power adapter */
+ break;
+ }
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = psu != POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ return 0;
+
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ val->intval = psu;
+ return 0;
+
+ case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
+ if (ctl & ASUSEC_CTL_TEST_DISCHARGE)
+ val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE;
+ else if (ctl & ASUSEC_CTL_USB_CHARGE)
+ val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
+ else
+ val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
+ return 0;
+
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = priv->ec->model;
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static int asus_ec_charger_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct asus_ec_charger_data *priv = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
+ switch ((enum power_supply_charge_behaviour)val->intval) {
+ case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
+ return asus_ec_update_ctl(priv->ec,
+ ASUSEC_CTL_TEST_DISCHARGE | ASUSEC_CTL_USB_CHARGE,
+ ASUSEC_CTL_USB_CHARGE);
+
+ case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
+ return asus_ec_clear_ctl_bits(priv->ec,
+ ASUSEC_CTL_TEST_DISCHARGE | ASUSEC_CTL_USB_CHARGE);
+
+ case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE:
+ return asus_ec_update_ctl(priv->ec,
+ ASUSEC_CTL_TEST_DISCHARGE | ASUSEC_CTL_USB_CHARGE,
+ ASUSEC_CTL_TEST_DISCHARGE);
+ default:
+ return -EINVAL;
+ }
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static int asus_ec_charger_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct power_supply_desc asus_ec_charger_desc = {
+ .name = "asus-ec-charger",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .charge_behaviours = BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) |
+ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE) |
+ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE),
+ .usb_types = BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN) |
+ BIT(POWER_SUPPLY_USB_TYPE_SDP) |
+ BIT(POWER_SUPPLY_USB_TYPE_CDP) |
+ BIT(POWER_SUPPLY_USB_TYPE_ACA),
+ .properties = asus_ec_charger_properties,
+ .num_properties = ARRAY_SIZE(asus_ec_charger_properties),
+ .get_property = asus_ec_charger_get_property,
+ .set_property = asus_ec_charger_set_property,
+ .property_is_writeable = asus_ec_charger_property_is_writeable,
+ .no_thermal = true,
+};
+
+static int asus_ec_charger_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct asus_ec_charger_data *priv =
+ container_of(nb, struct asus_ec_charger_data, nb);
+
+ switch (action) {
+ case ASUSEC_SMI_ACTION(POWER_NOTIFY):
+ case ASUSEC_SMI_ACTION(ADAPTER_EVENT):
+ power_supply_changed(priv->psy);
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int asus_ec_charger_probe(struct platform_device *pdev)
+{
+ struct asus_ec_charger_data *priv;
+ struct device *dev = &pdev->dev;
+ struct power_supply_config cfg = { };
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+ priv->ec = cell_to_ec(pdev);
+
+ cfg.fwnode = dev_fwnode(dev->parent);
+ cfg.drv_data = priv;
+
+ memcpy(&priv->psy_desc, &asus_ec_charger_desc, sizeof(priv->psy_desc));
+ priv->psy_desc.name = devm_kasprintf(dev, GFP_KERNEL, "%s-charger",
+ priv->ec->name);
+
+ priv->psy = devm_power_supply_register(dev, &priv->psy_desc, &cfg);
+ if (IS_ERR(priv->psy))
+ return dev_err_probe(dev, PTR_ERR(priv->psy),
+ "Failed to register power supply\n");
+
+ priv->nb.notifier_call = asus_ec_charger_notify;
+
+ return devm_asus_ec_register_notifier(pdev, &priv->nb);
+}
+
+static struct platform_driver asus_ec_charger_driver = {
+ .driver.name = "asus-transformer-ec-charger",
+ .probe = asus_ec_charger_probe,
+};
+module_platform_driver(asus_ec_charger_driver);
+
+MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
+MODULE_DESCRIPTION("ASUS Transformer Pad battery charger driver");
+MODULE_LICENSE("GPL");
--
2.51.0
^ permalink raw reply related
* [PATCH v4 6/7] power: supply: Add driver for ASUS Transformer battery
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Driver implements one battery cell per EC controller and supports reading
of battery status for ASUS Transformer's pad and mobile dock.
Co-developed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
drivers/power/supply/Kconfig | 11 +
drivers/power/supply/Makefile | 1 +
.../supply/asus-transformer-ec-battery.c | 272 ++++++++++++++++++
3 files changed, 284 insertions(+)
create mode 100644 drivers/power/supply/asus-transformer-ec-battery.c
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 81fadb0695a9..3c46b412632d 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -122,6 +122,17 @@ config BATTERY_CHAGALL
This driver can also be built as a module. If so, the module will be
called chagall-battery.
+config BATTERY_ASUS_TRANSFORMER_EC
+ tristate "Asus Transformer's battery driver"
+ depends on MFD_ASUS_TRANSFORMER_EC
+ help
+ Say Y here to enable support APM status emulation using
+ battery class devices.
+
+ This sub-driver supports battery cells found in Asus Transformer
+ tablets and mobile docks and controlled by special embedded
+ controller.
+
config BATTERY_CPCAP
tristate "Motorola CPCAP PMIC battery driver"
depends on MFD_CPCAP && IIO
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 41c400bbf022..aa5e6b05b018 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_TEST_POWER) += test_power.o
obj-$(CONFIG_BATTERY_88PM860X) += 88pm860x_battery.o
obj-$(CONFIG_CHARGER_ADP5061) += adp5061.o
obj-$(CONFIG_BATTERY_ACT8945A) += act8945a_charger.o
+obj-$(CONFIG_BATTERY_ASUS_TRANSFORMER_EC) += asus-transformer-ec-battery.o
obj-$(CONFIG_BATTERY_AXP20X) += axp20x_battery.o
obj-$(CONFIG_CHARGER_AXP20X) += axp20x_ac_power.o
obj-$(CONFIG_BATTERY_CHAGALL) += chagall-battery.o
diff --git a/drivers/power/supply/asus-transformer-ec-battery.c b/drivers/power/supply/asus-transformer-ec-battery.c
new file mode 100644
index 000000000000..aefcd3fed6fe
--- /dev/null
+++ b/drivers/power/supply/asus-transformer-ec-battery.c
@@ -0,0 +1,272 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/array_size.h>
+#include <linux/devm-helpers.h>
+#include <linux/err.h>
+#include <linux/mfd/asus-transformer-ec.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/property.h>
+#include <linux/unaligned.h>
+
+#define ASUSEC_BATTERY_DATA_FRESH_MSEC 5000
+
+#define ASUSEC_BATTERY_DISCHARGING 0x40
+#define ASUSEC_BATTERY_FULL_CHARGED 0x20
+#define ASUSEC_BATTERY_NOT_CHARGING 0x10
+
+#define TEMP_CELSIUS_OFFSET 2731
+
+struct asus_ec_battery_data {
+ const struct asusec_info *ec;
+ struct power_supply *battery;
+ struct power_supply_desc psy_desc;
+ struct delayed_work poll_work;
+ struct mutex battery_lock; /* for data refresh */
+ unsigned long batt_data_ts;
+ int last_state;
+ u8 batt_data[DOCKRAM_ENTRY_BUFSIZE];
+};
+
+static int asus_ec_battery_refresh(struct asus_ec_battery_data *priv)
+{
+ int ret = 0;
+
+ guard(mutex)(&priv->battery_lock);
+
+ if (time_before(jiffies, priv->batt_data_ts))
+ return ret;
+
+ ret = asus_dockram_read(priv->ec->dockram, ASUSEC_DOCKRAM_BATT_CTL,
+ priv->batt_data);
+ if (ret < 0)
+ return ret;
+
+ priv->batt_data_ts = jiffies +
+ msecs_to_jiffies(ASUSEC_BATTERY_DATA_FRESH_MSEC);
+
+ return ret;
+}
+
+static enum power_supply_property asus_ec_battery_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+static const unsigned int asus_ec_battery_prop_offs[] = {
+ [POWER_SUPPLY_PROP_STATUS] = 1,
+ [POWER_SUPPLY_PROP_VOLTAGE_MAX] = 3,
+ [POWER_SUPPLY_PROP_CURRENT_MAX] = 5,
+ [POWER_SUPPLY_PROP_TEMP] = 7,
+ [POWER_SUPPLY_PROP_VOLTAGE_NOW] = 9,
+ [POWER_SUPPLY_PROP_CURRENT_NOW] = 11,
+ [POWER_SUPPLY_PROP_CAPACITY] = 13,
+ [POWER_SUPPLY_PROP_CHARGE_NOW] = 15,
+ [POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW] = 17,
+ [POWER_SUPPLY_PROP_TIME_TO_FULL_NOW] = 19,
+};
+
+static int asus_ec_battery_get_value(struct asus_ec_battery_data *priv,
+ enum power_supply_property psp)
+{
+ int ret, offs;
+
+ if (psp >= ARRAY_SIZE(asus_ec_battery_prop_offs))
+ return -EINVAL;
+
+ offs = asus_ec_battery_prop_offs[psp];
+ if (!offs)
+ return -EINVAL;
+
+ ret = asus_ec_battery_refresh(priv);
+ if (ret < 0)
+ return ret;
+
+ if (offs >= priv->batt_data[0])
+ return -ENODATA;
+
+ return get_unaligned_le16(priv->batt_data + offs);
+}
+
+static int asus_ec_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct asus_ec_battery_data *priv = power_supply_get_drvdata(psy);
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+
+ default:
+ ret = asus_ec_battery_get_value(priv, psp);
+ if (ret < 0)
+ return ret;
+
+ val->intval = (s16)ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (ret & ASUSEC_BATTERY_FULL_CHARGED)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else if (ret & ASUSEC_BATTERY_NOT_CHARGING)
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (ret & ASUSEC_BATTERY_DISCHARGING)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval -= TEMP_CELSIUS_OFFSET;
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ val->intval *= 1000;
+ break;
+
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+ val->intval *= 60;
+ break;
+
+ default:
+ break;
+ }
+
+ break;
+ }
+
+ return 0;
+}
+
+static void asus_ec_battery_poll_work(struct work_struct *work)
+{
+ struct asus_ec_battery_data *priv =
+ container_of(work, struct asus_ec_battery_data, poll_work.work);
+ int state;
+
+ state = asus_ec_battery_get_value(priv, POWER_SUPPLY_PROP_STATUS);
+ if (state < 0)
+ return;
+
+ if (state & ASUSEC_BATTERY_FULL_CHARGED)
+ state = POWER_SUPPLY_STATUS_FULL;
+ else if (state & ASUSEC_BATTERY_DISCHARGING)
+ state = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ state = POWER_SUPPLY_STATUS_CHARGING;
+
+ if (priv->last_state != state) {
+ priv->last_state = state;
+ power_supply_changed(priv->battery);
+ }
+
+ /* continuously send uevent notification */
+ schedule_delayed_work(&priv->poll_work,
+ msecs_to_jiffies(ASUSEC_BATTERY_DATA_FRESH_MSEC));
+}
+
+static const struct power_supply_desc asus_ec_battery_desc = {
+ .name = "asus-ec-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = asus_ec_battery_properties,
+ .num_properties = ARRAY_SIZE(asus_ec_battery_properties),
+ .get_property = asus_ec_battery_get_property,
+ .external_power_changed = power_supply_changed,
+};
+
+static int asus_ec_battery_probe(struct platform_device *pdev)
+{
+ struct asus_ec_battery_data *priv;
+ struct device *dev = &pdev->dev;
+ struct power_supply_config cfg = { };
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+
+ mutex_init(&priv->battery_lock);
+
+ priv->ec = cell_to_ec(pdev);
+ priv->batt_data_ts = jiffies - 1;
+ priv->last_state = POWER_SUPPLY_STATUS_UNKNOWN;
+
+ cfg.fwnode = dev_fwnode(dev->parent);
+ cfg.drv_data = priv;
+
+ memcpy(&priv->psy_desc, &asus_ec_battery_desc, sizeof(priv->psy_desc));
+ priv->psy_desc.name = devm_kasprintf(dev, GFP_KERNEL, "%s-battery",
+ priv->ec->name);
+
+ priv->battery = devm_power_supply_register(dev, &priv->psy_desc, &cfg);
+ if (IS_ERR(priv->battery))
+ return dev_err_probe(dev, PTR_ERR(priv->battery),
+ "Failed to register power supply\n");
+
+ ret = devm_delayed_work_autocancel(dev, &priv->poll_work,
+ asus_ec_battery_poll_work);
+ if (ret)
+ return ret;
+
+ schedule_delayed_work(&priv->poll_work,
+ msecs_to_jiffies(ASUSEC_BATTERY_DATA_FRESH_MSEC));
+
+ return 0;
+}
+
+static int __maybe_unused asus_ec_battery_suspend(struct device *dev)
+{
+ struct asus_ec_battery_data *priv = dev_get_drvdata(dev);
+
+ cancel_delayed_work_sync(&priv->poll_work);
+
+ return 0;
+}
+
+static int __maybe_unused asus_ec_battery_resume(struct device *dev)
+{
+ struct asus_ec_battery_data *priv = dev_get_drvdata(dev);
+
+ schedule_delayed_work(&priv->poll_work,
+ msecs_to_jiffies(ASUSEC_BATTERY_DATA_FRESH_MSEC));
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(asus_ec_battery_pm_ops,
+ asus_ec_battery_suspend, asus_ec_battery_resume);
+
+static struct platform_driver asus_ec_battery_driver = {
+ .driver = {
+ .name = "asus-transformer-ec-battery",
+ .pm = &asus_ec_battery_pm_ops,
+ },
+ .probe = asus_ec_battery_probe,
+};
+module_platform_driver(asus_ec_battery_driver);
+
+MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("ASUS Transformer's battery driver");
+MODULE_LICENSE("GPL");
--
2.51.0
^ permalink raw reply related
* [PATCH v4 5/7] leds: Add driver for ASUS Transformer LEDs
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
ASUS Transformer tablets have a green and an amber LED on both the Pad
and the Dock. If both LEDs are enabled simultaneously, the emitted light
will be yellow.
Co-developed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
drivers/leds/Kconfig | 11 ++++
drivers/leds/Makefile | 1 +
drivers/leds/leds-asus-transformer-ec.c | 79 +++++++++++++++++++++++++
3 files changed, 91 insertions(+)
create mode 100644 drivers/leds/leds-asus-transformer-ec.c
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 597d7a79c988..bda06dc145d7 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -120,6 +120,17 @@ config LEDS_OSRAM_AMS_AS3668
To compile this driver as a module, choose M here: the module
will be called leds-as3668.
+config LEDS_ASUS_TRANSFORMER_EC
+ tristate "LED Support for Asus Transformer charging LED"
+ depends on LEDS_CLASS
+ depends on MFD_ASUS_TRANSFORMER_EC
+ help
+ This option enables support for charging indicator on
+ Asus Transformer's Pad and it's Dock.
+
+ To compile this driver as a module, choose M here: the module
+ will be called leds-asus-transformer-ec.
+
config LEDS_AW200XX
tristate "LED support for Awinic AW20036/AW20054/AW20072/AW20108"
depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 8fdb45d5b439..d5395c3f1124 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_AN30259A) += leds-an30259a.o
obj-$(CONFIG_LEDS_APU) += leds-apu.o
obj-$(CONFIG_LEDS_ARIEL) += leds-ariel.o
obj-$(CONFIG_LEDS_AS3668) += leds-as3668.o
+obj-$(CONFIG_LEDS_ASUS_TRANSFORMER_EC) += leds-asus-transformer-ec.o
obj-$(CONFIG_LEDS_AW200XX) += leds-aw200xx.o
obj-$(CONFIG_LEDS_AW2013) += leds-aw2013.o
obj-$(CONFIG_LEDS_BCM6328) += leds-bcm6328.o
diff --git a/drivers/leds/leds-asus-transformer-ec.c b/drivers/leds/leds-asus-transformer-ec.c
new file mode 100644
index 000000000000..3186038e3be7
--- /dev/null
+++ b/drivers/leds/leds-asus-transformer-ec.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/err.h>
+#include <linux/leds.h>
+#include <linux/mfd/asus-transformer-ec.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+static void asus_ec_led_set_brightness_amber(struct led_classdev *led,
+ enum led_brightness brightness)
+{
+ const struct asusec_info *ec = dev_get_drvdata(led->dev->parent);
+
+ if (brightness)
+ asus_ec_set_ctl_bits(ec, ASUSEC_CTL_LED_AMBER);
+ else
+ asus_ec_clear_ctl_bits(ec, ASUSEC_CTL_LED_AMBER);
+}
+
+static void asus_ec_led_set_brightness_green(struct led_classdev *led,
+ enum led_brightness brightness)
+{
+ const struct asusec_info *ec = dev_get_drvdata(led->dev->parent);
+
+ if (brightness)
+ asus_ec_set_ctl_bits(ec, ASUSEC_CTL_LED_GREEN);
+ else
+ asus_ec_clear_ctl_bits(ec, ASUSEC_CTL_LED_GREEN);
+}
+
+static int asus_ec_led_probe(struct platform_device *pdev)
+{
+ struct asusec_info *ec = cell_to_ec(pdev);
+ struct device *dev = &pdev->dev;
+ struct led_classdev *amber_led, *green_led;
+ int ret;
+
+ platform_set_drvdata(pdev, ec);
+
+ amber_led = devm_kzalloc(dev, sizeof(*amber_led), GFP_KERNEL);
+ if (!amber_led)
+ return -ENOMEM;
+
+ amber_led->name = devm_kasprintf(dev, GFP_KERNEL, "%s::amber", ec->name);
+ amber_led->max_brightness = 1;
+ amber_led->flags = LED_CORE_SUSPENDRESUME | LED_RETAIN_AT_SHUTDOWN;
+ amber_led->brightness_set = asus_ec_led_set_brightness_amber;
+
+ ret = devm_led_classdev_register(dev, amber_led);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to register amber LED\n");
+
+ green_led = devm_kzalloc(dev, sizeof(*green_led), GFP_KERNEL);
+ if (!green_led)
+ return -ENOMEM;
+
+ green_led->name = devm_kasprintf(dev, GFP_KERNEL, "%s::green", ec->name);
+ green_led->max_brightness = 1;
+ green_led->flags = LED_CORE_SUSPENDRESUME | LED_RETAIN_AT_SHUTDOWN;
+ green_led->brightness_set = asus_ec_led_set_brightness_green;
+
+ ret = devm_led_classdev_register(dev, green_led);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to register green LED\n");
+
+ return 0;
+}
+
+static struct platform_driver asus_ec_led_driver = {
+ .driver.name = "asus-transformer-ec-led",
+ .probe = asus_ec_led_probe,
+};
+module_platform_driver(asus_ec_led_driver);
+
+MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("ASUS Transformer's charging LED driver");
+MODULE_LICENSE("GPL");
--
2.51.0
^ permalink raw reply related
* [PATCH v4 4/7] input: keyboard: Add driver for ASUS Transformer dock multimedia keys
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Add support for multimedia top button row of ASUS Transformer's Mobile
Dock keyboard. Driver is made that function keys (F1-F12) are used by
default which suits average Linux use better and with pressing
ScreenLock + AltGr function keys layout is switched to multimedia keys.
Since this only modifies codes sent by asus-ec-keys it doesn't affect
normal keyboards at all.
Co-developed-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/input/keyboard/Kconfig | 10 +
drivers/input/keyboard/Makefile | 1 +
.../input/keyboard/asus-transformer-ec-keys.c | 272 ++++++++++++++++++
3 files changed, 283 insertions(+)
create mode 100644 drivers/input/keyboard/asus-transformer-ec-keys.c
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 2ff4fef322c2..4e577e5cf216 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -89,6 +89,16 @@ config KEYBOARD_APPLESPI
To compile this driver as a module, choose M here: the
module will be called applespi.
+config KEYBOARD_ASUS_TRANSFORMER_EC
+ tristate "Asus Transformer's Mobile Dock multimedia keys"
+ depends on MFD_ASUS_TRANSFORMER_EC
+ help
+ Say Y here if you want to use multimedia keys present on Asus
+ Transformer's Mobile Dock.
+
+ To compile this driver as a module, choose M here: the
+ module will be called asus-transformer-ec-keys.
+
config KEYBOARD_ATARI
tristate "Atari keyboard"
depends on ATARI
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 2d906e14f3e2..575edb0e8eb4 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_KEYBOARD_ADP5585) += adp5585-keys.o
obj-$(CONFIG_KEYBOARD_ADP5588) += adp5588-keys.o
obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o
obj-$(CONFIG_KEYBOARD_APPLESPI) += applespi.o
+obj-$(CONFIG_KEYBOARD_ASUS_TRANSFORMER_EC) += asus-transformer-ec-keys.o
obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o
obj-$(CONFIG_KEYBOARD_ATKBD) += atkbd.o
obj-$(CONFIG_KEYBOARD_BCM) += bcm-keypad.o
diff --git a/drivers/input/keyboard/asus-transformer-ec-keys.c b/drivers/input/keyboard/asus-transformer-ec-keys.c
new file mode 100644
index 000000000000..4cdebce58988
--- /dev/null
+++ b/drivers/input/keyboard/asus-transformer-ec-keys.c
@@ -0,0 +1,272 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/array_size.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/mfd/asus-transformer-ec.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#define ASUSEC_EXT_KEY_CODES 0x20
+
+struct asus_ec_keys_data {
+ struct notifier_block nb;
+ struct asusec_info *ec;
+ struct input_dev *xidev;
+ bool special_key_pressed;
+ bool special_key_mode;
+ unsigned short keymap[ASUSEC_EXT_KEY_CODES * 2];
+};
+
+static void asus_ec_input_event(struct input_handle *handle,
+ unsigned int event_type,
+ unsigned int event_code, int value)
+{
+ struct asus_ec_keys_data *priv = handle->handler->private;
+
+ /* Store special key state */
+ if (event_type == EV_KEY && event_code == KEY_RIGHTALT)
+ priv->special_key_pressed = !!value;
+}
+
+static int asus_ec_input_connect(struct input_handler *handler, struct input_dev *dev,
+ const struct input_device_id *id)
+{
+ struct input_handle *handle;
+ int error;
+
+ handle = kzalloc(sizeof(*handle), GFP_KERNEL);
+ if (!handle)
+ return -ENOMEM;
+
+ handle->dev = dev;
+ handle->handler = handler;
+ handle->name = "asusec-media-handler";
+
+ error = input_register_handle(handle);
+ if (error)
+ goto err_free_handle;
+
+ error = input_open_device(handle);
+ if (error)
+ goto err_unregister_handle;
+
+ return 0;
+
+ err_unregister_handle:
+ input_unregister_handle(handle);
+ err_free_handle:
+ kfree(handle);
+
+ return error;
+}
+
+static void asus_ec_input_disconnect(struct input_handle *handle)
+{
+ input_close_device(handle);
+ input_unregister_handle(handle);
+ kfree(handle);
+}
+
+static const struct input_device_id asus_ec_input_ids[] = {
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
+ .evbit = { BIT_MASK(EV_KEY) },
+ },
+ { }
+};
+
+static struct input_handler asus_ec_input_handler = {
+ .name = "asusec-media-handler",
+ .event = asus_ec_input_event,
+ .connect = asus_ec_input_connect,
+ .disconnect = asus_ec_input_disconnect,
+ .id_table = asus_ec_input_ids,
+};
+
+static const unsigned short asus_ec_dock_ext_keys[] = {
+ /* Function keys [0x00 - 0x19] */
+ [0x01] = KEY_DELETE,
+ [0x02] = KEY_F1,
+ [0x03] = KEY_F2,
+ [0x04] = KEY_F3,
+ [0x05] = KEY_F4,
+ [0x06] = KEY_F5,
+ [0x07] = KEY_F6,
+ [0x08] = KEY_F7,
+ [0x10] = KEY_F8,
+ [0x11] = KEY_F9,
+ [0x12] = KEY_F10,
+ [0x13] = KEY_F11,
+ [0x14] = KEY_F12,
+ [0x15] = KEY_MUTE,
+ [0x16] = KEY_VOLUMEDOWN,
+ [0x17] = KEY_VOLUMEUP,
+ /* Multimedia keys [0x20 - 0x39] */
+ [0x21] = KEY_SCREENLOCK,
+ [0x22] = KEY_WLAN,
+ [0x23] = KEY_BLUETOOTH,
+ [0x24] = KEY_TOUCHPAD_TOGGLE,
+ [0x25] = KEY_BRIGHTNESSDOWN,
+ [0x26] = KEY_BRIGHTNESSUP,
+ [0x27] = KEY_BRIGHTNESS_AUTO,
+ [0x28] = KEY_PRINT,
+ [0x30] = KEY_WWW,
+ [0x31] = KEY_CONFIG,
+ [0x32] = KEY_PREVIOUSSONG,
+ [0x33] = KEY_PLAYPAUSE,
+ [0x34] = KEY_NEXTSONG,
+ [0x35] = KEY_MUTE,
+ [0x36] = KEY_VOLUMEDOWN,
+ [0x37] = KEY_VOLUMEUP,
+};
+
+static void asus_ec_keys_report_key(struct input_dev *dev, unsigned int code,
+ unsigned int key, bool value)
+{
+ input_event(dev, EV_MSC, MSC_SCAN, code);
+ input_report_key(dev, key, value);
+ input_sync(dev);
+}
+
+static int asus_ec_keys_process_key(struct input_dev *dev, u8 code)
+{
+ struct asus_ec_keys_data *priv = dev_get_drvdata(dev->dev.parent);
+ unsigned int key = 0;
+
+ if (code == 0)
+ return NOTIFY_DONE;
+
+ /* Flip special key mode state when pressing key 1 with special key pressed */
+ if (priv->special_key_pressed && code == 1) {
+ priv->special_key_mode = !priv->special_key_mode;
+ return NOTIFY_DONE;
+ }
+
+ /*
+ * Relocate code to second "page" if pressed state XOR's mode state
+ * This way special key will invert the current mode
+ */
+ if (priv->special_key_mode ^ priv->special_key_pressed)
+ code += ASUSEC_EXT_KEY_CODES;
+
+ if (code < dev->keycodemax) {
+ unsigned short *map = dev->keycode;
+
+ key = map[code];
+ }
+
+ if (!key)
+ key = KEY_UNKNOWN;
+
+ asus_ec_keys_report_key(dev, code, key, 1);
+ asus_ec_keys_report_key(dev, code, key, 0);
+
+ return NOTIFY_OK;
+}
+
+static int asus_ec_keys_notify(struct notifier_block *nb,
+ unsigned long action, void *data_)
+{
+ struct asus_ec_keys_data *priv = container_of(nb, struct asus_ec_keys_data, nb);
+ u8 *data = data_;
+
+ if (action & ASUSEC_SMI_MASK)
+ return NOTIFY_DONE;
+
+ if (action & ASUSEC_SCI_MASK)
+ return asus_ec_keys_process_key(priv->xidev, data[2]);
+
+ return NOTIFY_DONE;
+}
+
+static void asus_ec_keys_setup_keymap(struct asus_ec_keys_data *priv)
+{
+ struct input_dev *dev = priv->xidev;
+ unsigned int i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(priv->keymap) < ARRAY_SIZE(asus_ec_dock_ext_keys));
+
+ dev->keycode = priv->keymap;
+ dev->keycodesize = sizeof(*priv->keymap);
+ dev->keycodemax = ARRAY_SIZE(priv->keymap);
+
+ input_set_capability(dev, EV_MSC, MSC_SCAN);
+ input_set_capability(dev, EV_KEY, KEY_UNKNOWN);
+
+ for (i = 0; i < ARRAY_SIZE(asus_ec_dock_ext_keys); i++) {
+ unsigned int code = asus_ec_dock_ext_keys[i];
+
+ if (!code)
+ continue;
+
+ __set_bit(code, dev->keybit);
+ priv->keymap[i] = code;
+ }
+}
+
+static void asus_ec_input_handler_deregister(void *priv)
+{
+ input_unregister_handler(&asus_ec_input_handler);
+}
+
+static int asus_ec_keys_probe(struct platform_device *pdev)
+{
+ struct asusec_info *ec = cell_to_ec(pdev);
+ struct i2c_client *parent = to_i2c_client(pdev->dev.parent);
+ struct asus_ec_keys_data *priv;
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+ priv->ec = ec;
+
+ priv->xidev = devm_input_allocate_device(&pdev->dev);
+ if (!priv->xidev)
+ return -ENOMEM;
+
+ priv->xidev->name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "%s Keyboard Ext", ec->model);
+ priv->xidev->phys = devm_kasprintf(&pdev->dev, GFP_KERNEL,
+ "i2c-%u-%04x",
+ i2c_adapter_id(parent->adapter),
+ parent->addr);
+ asus_ec_keys_setup_keymap(priv);
+
+ ret = input_register_device(priv->xidev);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to register extension keys: %d\n",
+ ret);
+ return ret;
+ }
+
+ asus_ec_input_handler.private = priv;
+
+ ret = input_register_handler(&asus_ec_input_handler);
+ if (ret)
+ return ret;
+
+ ret = devm_add_action_or_reset(&pdev->dev, asus_ec_input_handler_deregister,
+ priv);
+ if (ret)
+ return ret;
+
+ priv->nb.notifier_call = asus_ec_keys_notify;
+
+ return devm_asus_ec_register_notifier(pdev, &priv->nb);
+}
+
+static struct platform_driver asus_ec_keys_driver = {
+ .driver.name = "asus-transformer-ec-keys",
+ .probe = asus_ec_keys_probe,
+};
+module_platform_driver(asus_ec_keys_driver);
+
+MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
+MODULE_DESCRIPTION("ASUS Transformer's multimedia keys driver");
+MODULE_LICENSE("GPL");
--
2.51.0
^ permalink raw reply related
* [PATCH v4 3/7] input: serio: Add driver for ASUS Transformer dock keyboard and touchpad
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Add input driver for ASUS Transformer dock keyboard and touchpad.
Some keys in ASUS Dock report keycodes that don't make sense according to
their position, this patch modifies the incoming data that is sent to
serio to send proper scancodes.
Co-developed-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
drivers/input/serio/Kconfig | 15 ++
drivers/input/serio/Makefile | 1 +
drivers/input/serio/asus-transformer-ec-kbc.c | 147 ++++++++++++++++++
3 files changed, 163 insertions(+)
create mode 100644 drivers/input/serio/asus-transformer-ec-kbc.c
diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig
index c7ef347a4dff..1ca17ba632cc 100644
--- a/drivers/input/serio/Kconfig
+++ b/drivers/input/serio/Kconfig
@@ -97,6 +97,21 @@ config SERIO_RPCKBD
To compile this driver as a module, choose M here: the
module will be called rpckbd.
+config SERIO_ASUS_TRANSFORMER_EC
+ tristate "Asus Transformer's Dock keyboard and touchpad controller"
+ depends on MFD_ASUS_TRANSFORMER_EC
+ help
+ Say Y here if you want to use the keyboard and/or touchpad on
+ Asus Transformed's Mobile Dock.
+
+ For keyboard support you also need atkbd driver.
+
+ For touchpad support you also need psmouse driver with Elantech
+ touchpad option enabled.
+
+ To compile this driver as a module, choose M here: the module will
+ be called asus-transformer-ec-kbc.
+
config SERIO_AMBAKMI
tristate "AMBA KMI keyboard controller"
depends on ARM_AMBA
diff --git a/drivers/input/serio/Makefile b/drivers/input/serio/Makefile
index 6d97bad7b844..9ecf0d011863 100644
--- a/drivers/input/serio/Makefile
+++ b/drivers/input/serio/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_SERIO_CT82C710) += ct82c710.o
obj-$(CONFIG_SERIO_RPCKBD) += rpckbd.o
obj-$(CONFIG_SERIO_SA1111) += sa1111ps2.o
obj-$(CONFIG_SERIO_AMBAKMI) += ambakmi.o
+obj-$(CONFIG_SERIO_ASUS_TRANSFORMER_EC) += asus-transformer-ec-kbc.o
obj-$(CONFIG_SERIO_Q40KBD) += q40kbd.o
obj-$(CONFIG_SERIO_GSCPS2) += gscps2.o
obj-$(CONFIG_HP_SDC) += hp_sdc.o
diff --git a/drivers/input/serio/asus-transformer-ec-kbc.c b/drivers/input/serio/asus-transformer-ec-kbc.c
new file mode 100644
index 000000000000..af755cd0ae38
--- /dev/null
+++ b/drivers/input/serio/asus-transformer-ec-kbc.c
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/i8042.h>
+#include <linux/mfd/asus-transformer-ec.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/serio.h>
+
+struct asus_ec_kbc_data {
+ struct notifier_block nb;
+ struct asusec_info *ec;
+ struct serio *sdev[2];
+};
+
+static int asus_ec_kbc_notify(struct notifier_block *nb,
+ unsigned long action, void *data_)
+{
+ struct asus_ec_kbc_data *priv = container_of(nb, struct asus_ec_kbc_data, nb);
+ unsigned int port_idx, n;
+ u8 *data = data_;
+
+ if (action & (ASUSEC_SMI_MASK | ASUSEC_SCI_MASK))
+ return NOTIFY_DONE;
+ else if (action & ASUSEC_AUX_MASK)
+ port_idx = 1;
+ else if (action & (ASUSEC_KBC_MASK | ASUSEC_KEY_MASK))
+ port_idx = 0;
+ else
+ return NOTIFY_DONE;
+
+ n = data[0] - 1;
+ data += 2;
+
+ /*
+ * We need to replace these incoming data for keys:
+ * RIGHT_META Press 0xE0 0x27 -> LEFT_ALT Press 0x11
+ * RIGHT_META Release 0xE0 0xF0 0x27 -> LEFT_ALT Release 0xF0 0x11
+ * COMPOSE Press 0xE0 0x2F -> RIGHT_META Press 0xE0 0x27
+ * COMPOSE Release 0xE0 0xF0 0x2F -> RIGHT_META Release 0xE0 0xF0 0x27
+ */
+
+ if (port_idx == 0 && n >= 2 && data[0] == 0xE0) {
+ if (n == 3 && data[1] == 0xF0) {
+ switch (data[2]) {
+ case 0x27:
+ data[0] = 0xF0;
+ data[1] = 0x11;
+ n = 2;
+ break;
+ case 0x2F:
+ data[2] = 0x27;
+ break;
+ }
+ } else if (n == 2) {
+ switch (data[1]) {
+ case 0x27:
+ data[0] = 0x11;
+ n = 1;
+ break;
+ case 0x2F:
+ data[1] = 0x27;
+ break;
+ }
+ }
+ }
+
+ while (n--)
+ serio_interrupt(priv->sdev[port_idx], *data++, 0);
+
+ return NOTIFY_OK;
+}
+
+static int asus_ec_serio_write(struct serio *port, unsigned char data)
+{
+ const struct asusec_info *ec = port->port_data;
+
+ return asus_ec_i2c_command(ec, (data << 8) | port->id.extra);
+}
+
+static void asus_ec_serio_remove(void *data)
+{
+ serio_unregister_port(data);
+}
+
+static int asus_ec_register_serio(struct platform_device *pdev, int idx,
+ const char *name, int cmd)
+{
+ struct asus_ec_kbc_data *priv = platform_get_drvdata(pdev);
+ struct i2c_client *parent = to_i2c_client(pdev->dev.parent);
+ struct serio *port = kzalloc(sizeof(*port), GFP_KERNEL);
+
+ if (!port)
+ return -ENOMEM;
+
+ priv->sdev[idx] = port;
+ port->dev.parent = &pdev->dev;
+ port->id.type = SERIO_8042;
+ port->id.extra = cmd & 0xFF;
+ port->write = asus_ec_serio_write;
+ port->port_data = (void *)priv->ec;
+ snprintf(port->name, sizeof(port->name), "%s %s",
+ priv->ec->model, name);
+ snprintf(port->phys, sizeof(port->phys), "i2c-%u-%04x/serio%d",
+ i2c_adapter_id(parent->adapter), parent->addr, idx);
+
+ serio_register_port(port);
+
+ return devm_add_action_or_reset(&pdev->dev, asus_ec_serio_remove, port);
+}
+
+static int asus_ec_kbc_probe(struct platform_device *pdev)
+{
+ struct asusec_info *ec = cell_to_ec(pdev);
+ struct asus_ec_kbc_data *priv;
+ int ret;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+ priv->ec = ec;
+
+ ret = asus_ec_register_serio(pdev, 0, "Keyboard", 0);
+ if (ret < 0)
+ return ret;
+
+ ret = asus_ec_register_serio(pdev, 1, "Touchpad", I8042_CMD_AUX_SEND);
+ if (ret < 0)
+ return ret;
+
+ priv->nb.notifier_call = asus_ec_kbc_notify;
+
+ return devm_asus_ec_register_notifier(pdev, &priv->nb);
+}
+
+static struct platform_driver asus_ec_kbc_driver = {
+ .driver.name = "asus-transformer-ec-kbc",
+ .probe = asus_ec_kbc_probe,
+};
+module_platform_driver(asus_ec_kbc_driver);
+
+MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
+MODULE_DESCRIPTION("ASUS Transformer's Dock keyboard and touchpad controller driver");
+MODULE_LICENSE("GPL");
--
2.51.0
^ permalink raw reply related
* [PATCH v4 2/7] mfd: Add driver for ASUS Transformer embedded controller
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Support Nuvoton NPCE795-based ECs as used in Asus Transformer TF201,
TF300T, TF300TG, TF300TL and TF700T pad and dock, as well as TF101 dock
and TF600T, P1801-T and TF701T pad. This is a glue driver handling
detection and common operations for EC's functions.
Co-developed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
drivers/mfd/Kconfig | 14 +
drivers/mfd/Makefile | 1 +
drivers/mfd/asus-transformer-ec.c | 762 ++++++++++++++++++++++++
include/linux/mfd/asus-transformer-ec.h | 162 +++++
4 files changed, 939 insertions(+)
create mode 100644 drivers/mfd/asus-transformer-ec.c
create mode 100644 include/linux/mfd/asus-transformer-ec.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 7192c9d1d268..5aa4facfd2df 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -137,6 +137,20 @@ config MFD_AAT2870_CORE
additional drivers must be enabled in order to use the
functionality of the device.
+config MFD_ASUS_TRANSFORMER_EC
+ tristate "ASUS Transformer's embedded controller"
+ depends on I2C && OF
+ help
+ Support ECs found in ASUS Transformer's Pad and Mobile Dock.
+
+ This provides shared glue for functional part drivers:
+ asus-transformer-ec-kbc, asus-transformer-ec-keys,
+ leds-asus-transformer-ec, asus-transformer-ec-battery
+ and asus-transformer-ec-charger.
+
+ This driver can also be built as a module. If so, the module
+ will be called asus-transformer-ec.
+
config MFD_AT91_USART
tristate "AT91 USART Driver"
select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index e75e8045c28a..fd80088d8a9a 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o
obj-$(CONFIG_MFD_88PM886_PMIC) += 88pm886.o
obj-$(CONFIG_MFD_ACT8945A) += act8945a.o
obj-$(CONFIG_MFD_SM501) += sm501.o
+obj-$(CONFIG_MFD_ASUS_TRANSFORMER_EC) += asus-transformer-ec.o
obj-$(CONFIG_ARCH_BCM2835) += bcm2835-pm.o
obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o
obj-$(CONFIG_MFD_BD9571MWV) += bd9571mwv.o
diff --git a/drivers/mfd/asus-transformer-ec.c b/drivers/mfd/asus-transformer-ec.c
new file mode 100644
index 000000000000..aa3b9e31f3fc
--- /dev/null
+++ b/drivers/mfd/asus-transformer-ec.c
@@ -0,0 +1,762 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/array_size.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/asus-transformer-ec.h>
+#include <linux/mfd/core.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/unaligned.h>
+
+#define ASUSEC_RSP_BUFFER_SIZE 8
+
+struct asus_ec_chip_data {
+ const char *name;
+ const struct mfd_cell *mfd_devices;
+ unsigned int num_devices;
+ bool clr_fmode; /* clear Factory Mode bit in EC control register */
+};
+
+struct asus_ec_data {
+ struct asusec_info info;
+ struct mutex ecreq_lock; /* prevent simultaneous access */
+ struct gpio_desc *ecreq;
+ struct i2c_client *self;
+ const struct asus_ec_chip_data *data;
+ char ec_data[DOCKRAM_ENTRY_BUFSIZE];
+ bool logging_disabled;
+};
+
+struct dockram_ec_data {
+ struct mutex ctl_lock; /* prevent simultaneous access */
+ char ctl_data[DOCKRAM_ENTRY_BUFSIZE];
+};
+
+#define to_ec_data(ec) \
+ container_of(ec, struct asus_ec_data, info)
+
+/**
+ * asus_dockram_read - Read a register from the DockRAM device.
+ * @client: Handle to the DockRAM device.
+ * @reg: Register to read.
+ * @buf: Byte array into which data will be read; must be large enough to
+ * hold the data returned by the DockRAM.
+ *
+ * This executes the DockRAM read based on the SMBus "block read" protocol
+ * or its emulation. It extracts DOCKRAM_ENTRY_SIZE bytes from the set
+ * register address.
+ *
+ * Returns a negative errno code else zero on success.
+ */
+int asus_dockram_read(struct i2c_client *client, int reg, char *buf)
+{
+ struct device *dev = &client->dev;
+ int ret;
+
+ memset(buf, 0, DOCKRAM_ENTRY_BUFSIZE);
+ ret = i2c_smbus_read_i2c_block_data(client, reg,
+ DOCKRAM_ENTRY_BUFSIZE, buf);
+ if (ret < 0)
+ return ret;
+
+ if (buf[0] > DOCKRAM_ENTRY_SIZE) {
+ dev_err(dev, "bad data len; buffer: %*ph; ret: %d\n",
+ DOCKRAM_ENTRY_BUFSIZE, buf, ret);
+ return -EPROTO;
+ }
+
+ dev_dbg(dev, "got data; buffer: %*ph; ret: %d\n",
+ DOCKRAM_ENTRY_BUFSIZE, buf, ret);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(asus_dockram_read);
+
+/**
+ * asus_dockram_write - Write a byte array to a register of the DockRAM device.
+ * @client: Handle to the DockRAM device.
+ * @reg: Register to write to.
+ * @buf: Byte array to be written (up to DOCKRAM_ENTRY_SIZE bytes).
+ *
+ * This executes the DockRAM write based on the SMBus "block write"
+ * protocol or its emulation. It writes DOCKRAM_ENTRY_SIZE bytes to the
+ * specified register address.
+ *
+ * Returns a negative errno code else zero on success.
+ */
+int asus_dockram_write(struct i2c_client *client, int reg, const char *buf)
+{
+ if (buf[0] > DOCKRAM_ENTRY_SIZE)
+ return -EINVAL;
+
+ dev_dbg(&client->dev, "sending data; buffer: %*ph\n", buf[0] + 1, buf);
+
+ return i2c_smbus_write_i2c_block_data(client, reg, buf[0] + 1, buf);
+}
+EXPORT_SYMBOL_GPL(asus_dockram_write);
+
+/**
+ * asus_dockram_access_ctl - Read from or write to the DockRAM control register.
+ * @client: Handle to the DockRAM device.
+ * @out: Pointer to a variable where the register value will be stored.
+ * @mask: Bitmask of bits to be cleared.
+ * @xor: Bitmask of bits to be set (via XOR).
+ *
+ * This performs a control register read if @out is provided and both @mask
+ * and @xor are zero. Otherwise, it performs a control register update if
+ * @mask and @xor are provided.
+ *
+ * Returns a negative errno code else zero on success.
+ */
+int asus_dockram_access_ctl(struct i2c_client *client, u64 *out, u64 mask,
+ u64 xor)
+{
+ struct dockram_ec_data *priv = i2c_get_clientdata(client);
+ char *buf = priv->ctl_data;
+ u64 val;
+ int ret = 0;
+
+ guard(mutex)(&priv->ctl_lock);
+
+ ret = asus_dockram_read(client, ASUSEC_DOCKRAM_CONTROL, buf);
+ if (ret < 0)
+ goto exit;
+
+ if (buf[0] != ASUSEC_CTL_SIZE) {
+ ret = -EPROTO;
+ goto exit;
+ }
+
+ val = get_unaligned_le64(buf + 1);
+
+ if (out)
+ *out = val;
+
+ if (mask || xor) {
+ put_unaligned_le64((val & ~mask) ^ xor, buf + 1);
+ ret = asus_dockram_write(client, ASUSEC_DOCKRAM_CONTROL, buf);
+ }
+
+exit:
+ if (ret < 0)
+ dev_err(&client->dev, "Failed to access control flags: %d\n",
+ ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(asus_dockram_access_ctl);
+
+static void asus_ec_remove_notifier(struct device *dev, void *res)
+{
+ struct asusec_info *ec = dev_get_drvdata(dev->parent);
+ struct notifier_block **nb = res;
+
+ blocking_notifier_chain_unregister(&ec->notify_list, *nb);
+}
+
+/**
+ * devm_asus_ec_register_notifier - Managed registration of notifier to an
+ * ASUS EC blocking notifier chain.
+ * @pdev: Device requesting the notifier (used for resource management).
+ * @nb: Notifier block to be registered.
+ *
+ * Register a notifier to the ASUS EC blocking notifier chain. The notifier
+ * will be automatically unregistered when the requesting device is detached.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int devm_asus_ec_register_notifier(struct platform_device *pdev,
+ struct notifier_block *nb)
+{
+ struct asusec_info *ec = dev_get_drvdata(pdev->dev.parent);
+ struct notifier_block **res;
+ int ret;
+
+ res = devres_alloc(asus_ec_remove_notifier, sizeof(*res), GFP_KERNEL);
+ if (!res)
+ return -ENOMEM;
+
+ *res = nb;
+ ret = blocking_notifier_chain_register(&ec->notify_list, nb);
+ if (ret) {
+ devres_free(res);
+ return ret;
+ }
+
+ devres_add(&pdev->dev, res);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devm_asus_ec_register_notifier);
+
+static int asus_ec_signal_request(const struct asusec_info *ec)
+{
+ struct asus_ec_data *priv = to_ec_data(ec);
+
+ guard(mutex)(&priv->ecreq_lock);
+
+ dev_dbg(&priv->self->dev, "EC request\n");
+
+ gpiod_set_value_cansleep(priv->ecreq, 1);
+ msleep(50);
+
+ gpiod_set_value_cansleep(priv->ecreq, 0);
+ msleep(200);
+
+ return 0;
+}
+
+static int asus_ec_write(struct asus_ec_data *priv, u16 data)
+{
+ int ret = i2c_smbus_write_word_data(priv->self, ASUSEC_WRITE_BUF, data);
+
+ dev_dbg(&priv->self->dev, "EC write: %04x, ret = %d\n", data, ret);
+ return ret;
+}
+
+static int asus_ec_read(struct asus_ec_data *priv, bool in_irq)
+{
+ int ret = i2c_smbus_read_i2c_block_data(priv->self, ASUSEC_READ_BUF,
+ sizeof(priv->ec_data),
+ priv->ec_data);
+
+ dev_dbg(&priv->self->dev, "EC read: %*ph, ret = %d%s\n",
+ sizeof(priv->ec_data), priv->ec_data,
+ ret, in_irq ? "; in irq" : "");
+
+ return ret;
+}
+
+/**
+ * asus_ec_i2c_command - Send a 16-bit command to the ASUS EC.
+ * @ec: Pointer to the shared ASUS EC structure.
+ * @data: The 16-bit command (word) to be sent.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int asus_ec_i2c_command(const struct asusec_info *ec, u16 data)
+{
+ return asus_ec_write(to_ec_data(ec), data);
+}
+EXPORT_SYMBOL_GPL(asus_ec_i2c_command);
+
+static void asus_ec_clear_buffer(struct asus_ec_data *priv)
+{
+ int retry = ASUSEC_RSP_BUFFER_SIZE;
+
+ while (retry--) {
+ if (asus_ec_read(priv, false) < 0)
+ continue;
+
+ if (priv->ec_data[1] & ASUSEC_OBF_MASK)
+ continue;
+
+ break;
+ }
+}
+
+static int asus_ec_log_info(struct asus_ec_data *priv, unsigned int reg,
+ const char *name, char **out)
+{
+ char buf[DOCKRAM_ENTRY_BUFSIZE];
+ int ret;
+
+ ret = asus_dockram_read(priv->info.dockram, reg, buf);
+ if (ret < 0)
+ return ret;
+
+ if (!priv->logging_disabled)
+ dev_info(&priv->self->dev, "%-14s: %.*s\n", name,
+ buf[0], buf + 1);
+
+ if (out)
+ *out = kstrndup(buf + 1, buf[0], GFP_KERNEL);
+
+ return 0;
+}
+
+static int asus_ec_reset(struct asus_ec_data *priv)
+{
+ int retry, ret;
+
+ for (retry = 0; retry < 3; retry++) {
+ ret = asus_ec_write(priv, 0);
+ if (!ret)
+ return 0;
+
+ msleep(300);
+ }
+
+ return ret;
+}
+
+static int asus_ec_magic_debug(struct asus_ec_data *priv)
+{
+ u64 flag;
+ int ret;
+
+ ret = asus_ec_get_ctl(&priv->info, &flag);
+ if (ret < 0)
+ return ret;
+
+ flag &= ASUSEC_CTL_SUSB_MODE;
+ dev_info(&priv->self->dev, "EC FW behaviour: %s\n",
+ flag ? "susb on when receive ec_req" :
+ "susb on when system wakeup");
+
+ return 0;
+}
+
+static int asus_ec_set_factory_mode(struct asus_ec_data *priv, bool on)
+{
+ dev_info(&priv->self->dev, "Entering %s mode.\n", on ? "factory" :
+ "normal");
+ return asus_ec_update_ctl(&priv->info, ASUSEC_CTL_FACTORY_MODE,
+ on ? ASUSEC_CTL_FACTORY_MODE : 0);
+}
+
+static void asus_ec_handle_smi(struct asus_ec_data *priv, unsigned int code);
+
+static irqreturn_t asus_ec_interrupt(int irq, void *dev_id)
+{
+ struct asus_ec_data *priv = dev_id;
+ unsigned long notify_action;
+ int ret;
+
+ ret = asus_ec_read(priv, true);
+ if (ret <= 0 || !(priv->ec_data[1] & ASUSEC_OBF_MASK))
+ return IRQ_NONE;
+
+ notify_action = priv->ec_data[1];
+ if (notify_action & ASUSEC_SMI_MASK) {
+ unsigned int code = priv->ec_data[2];
+
+ asus_ec_handle_smi(priv, code);
+
+ notify_action |= code << 8;
+ dev_dbg(&priv->self->dev, "SMI code: 0x%02x\n", code);
+ }
+
+ blocking_notifier_call_chain(&priv->info.notify_list,
+ notify_action, priv->ec_data);
+
+ return IRQ_HANDLED;
+}
+
+static int asus_ec_detect(struct asus_ec_data *priv)
+{
+ char *model = NULL;
+ int ret;
+
+ ret = asus_ec_reset(priv);
+ if (ret)
+ goto err_exit;
+
+ asus_ec_clear_buffer(priv);
+
+ ret = asus_ec_log_info(priv, ASUSEC_DOCKRAM_INFO_MODEL, "model", &model);
+ if (ret)
+ goto err_exit;
+
+ ret = asus_ec_log_info(priv, ASUSEC_DOCKRAM_INFO_FW, "FW version", NULL);
+ if (ret)
+ goto err_exit;
+
+ ret = asus_ec_log_info(priv, ASUSEC_DOCKRAM_INFO_CFGFMT, "Config format", NULL);
+ if (ret)
+ goto err_exit;
+
+ ret = asus_ec_log_info(priv, ASUSEC_DOCKRAM_INFO_HW, "HW version", NULL);
+ if (ret)
+ goto err_exit;
+
+ priv->logging_disabled = true;
+
+ ret = asus_ec_magic_debug(priv);
+ if (ret)
+ goto err_exit;
+
+ priv->info.model = model;
+ priv->info.name = priv->data->name;
+
+ if (priv->data->clr_fmode)
+ asus_ec_set_factory_mode(priv, false);
+
+err_exit:
+ if (ret)
+ dev_err(&priv->self->dev, "failed to access EC: %d\n", ret);
+
+ return ret;
+}
+
+static void asus_ec_handle_smi(struct asus_ec_data *priv, unsigned int code)
+{
+ dev_dbg(&priv->self->dev, "SMI interrupt: 0x%02x\n", code);
+
+ switch (code) {
+ case ASUSEC_SMI_HANDSHAKE:
+ case ASUSEC_SMI_RESET:
+ asus_ec_detect(priv);
+ break;
+ }
+}
+
+static ssize_t dockram_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct i2c_client *client = filp->private_data;
+ unsigned int reg, rsize;
+ ssize_t n_read = 0, val;
+ loff_t off = *ppos;
+ char *data;
+ int ret;
+
+ reg = off / DOCKRAM_ENTRY_SIZE;
+ off %= DOCKRAM_ENTRY_SIZE;
+ rsize = DOCKRAM_ENTRIES * DOCKRAM_ENTRY_SIZE;
+
+ if (!count)
+ return 0;
+
+ data = kmalloc(DOCKRAM_ENTRY_BUFSIZE, GFP_KERNEL);
+
+ while (reg < DOCKRAM_ENTRIES) {
+ unsigned int len = DOCKRAM_ENTRY_SIZE - off;
+
+ if (len > rsize)
+ len = rsize;
+
+ ret = asus_dockram_read(client, reg, data);
+ if (ret < 0) {
+ if (!n_read)
+ n_read = ret;
+ break;
+ }
+
+ val = copy_to_user(buf, data + 1 + off, len);
+ if (val == len)
+ return -EFAULT;
+
+ *ppos += len;
+ n_read += len;
+
+ if (len == rsize)
+ break;
+
+ rsize -= len;
+ buf += len;
+ off = 0;
+ ++reg;
+ }
+
+ kfree(data);
+
+ return n_read;
+}
+
+static int dockram_write_one(struct i2c_client *client, int reg,
+ const char __user *buf, size_t count)
+{
+ struct dockram_ec_data *priv = i2c_get_clientdata(client);
+ int ret;
+
+ if (!count || count > DOCKRAM_ENTRY_SIZE)
+ return -EINVAL;
+ if (buf[0] != count - 1)
+ return -EINVAL;
+
+ guard(mutex)(&priv->ctl_lock);
+
+ priv->ctl_data[0] = (u8)count;
+ memcpy(priv->ctl_data + 1, buf, count);
+ ret = asus_dockram_write(client, reg, priv->ctl_data);
+
+ return ret;
+}
+
+static ssize_t dockram_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct i2c_client *client = filp->private_data;
+ unsigned int reg;
+ loff_t off = *ppos;
+ int ret;
+
+ if (off % DOCKRAM_ENTRY_SIZE != 0)
+ return -EINVAL;
+
+ reg = off / DOCKRAM_ENTRY_SIZE;
+ if (reg >= DOCKRAM_ENTRIES)
+ return -EINVAL;
+
+ ret = dockram_write_one(client, reg, buf, count);
+
+ return ret < 0 ? ret : count;
+}
+
+static const struct debugfs_short_fops dockram_fops = {
+ .read = dockram_read,
+ .write = dockram_write,
+ .llseek = default_llseek,
+};
+
+static int control_reg_get(void *client, u64 *val)
+{
+ return asus_dockram_access_ctl(client, val, 0, 0);
+}
+
+static int control_reg_set(void *client, u64 val)
+{
+ return asus_dockram_access_ctl(client, NULL, ~0ull, val);
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(control_reg_fops, control_reg_get,
+ control_reg_set, "%016llx\n");
+
+static int ec_request_set(void *ec, u64 val)
+{
+ if (val)
+ asus_ec_signal_request(ec);
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(ec_request_fops, NULL, ec_request_set, "%llu\n");
+
+static int ec_irq_set(void *ec, u64 val)
+{
+ struct asus_ec_data *priv = to_ec_data(ec);
+
+ if (val)
+ irq_wake_thread(priv->self->irq, priv);
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(ec_irq_fops, NULL, ec_irq_set, "%llu\n");
+
+static void asus_ec_debugfs_remove(void *debugfs_root)
+{
+ debugfs_remove_recursive(debugfs_root);
+}
+
+static void devm_asus_ec_debugfs_init(struct device *dev)
+{
+ struct asusec_info *ec = dev_get_drvdata(dev);
+ struct asus_ec_data *priv = to_ec_data(ec);
+ struct dentry *debugfs_root, *dockram_dir;
+ char *name = devm_kasprintf(dev, GFP_KERNEL, "asus-ec-%s",
+ priv->data->name);
+
+ debugfs_root = debugfs_create_dir(name, NULL);
+ dockram_dir = debugfs_create_dir("dockram", debugfs_root);
+
+ debugfs_create_file("ec_irq", 0200, debugfs_root, ec,
+ &ec_irq_fops);
+ debugfs_create_file("ec_request", 0200, debugfs_root, ec,
+ &ec_request_fops);
+ debugfs_create_file("control_reg", 0644, dockram_dir,
+ priv->info.dockram, &control_reg_fops);
+ debugfs_create_file("dockram", 0644, dockram_dir,
+ priv->info.dockram, &dockram_fops);
+
+ devm_add_action_or_reset(dev, asus_ec_debugfs_remove, debugfs_root);
+}
+
+static void asus_ec_release_dockram_dev(void *client)
+{
+ i2c_unregister_device(client);
+}
+
+static struct i2c_client *devm_asus_dockram_get(struct device *dev)
+{
+ struct i2c_client *parent = to_i2c_client(dev);
+ struct i2c_client *dockram;
+ struct dockram_ec_data *priv;
+ int ret;
+
+ dockram = i2c_new_ancillary_device(parent, "dockram",
+ parent->addr + 2);
+ if (IS_ERR(dockram))
+ return dockram;
+
+ ret = devm_add_action_or_reset(dev, asus_ec_release_dockram_dev,
+ dockram);
+ if (ret)
+ return ERR_PTR(ret);
+
+ priv = devm_kzalloc(&dockram->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return ERR_PTR(-ENOMEM);
+
+ i2c_set_clientdata(dockram, priv);
+ mutex_init(&priv->ctl_lock);
+
+ return dockram;
+}
+
+static int asus_ec_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct asus_ec_data *priv;
+ int ret;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
+ return dev_err_probe(dev, -ENXIO,
+ "I2C bus is missing required SMBus block mode support\n");
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->data = device_get_match_data(dev);
+ if (!priv->data)
+ return -ENODEV;
+
+ i2c_set_clientdata(client, priv);
+ priv->self = client;
+
+ priv->info.dockram = devm_asus_dockram_get(dev);
+ if (IS_ERR(priv->info.dockram))
+ return dev_err_probe(dev, PTR_ERR(priv->info.dockram),
+ "failed to get dockram\n");
+
+ priv->ecreq = devm_gpiod_get(dev, "request", GPIOD_OUT_LOW);
+ if (IS_ERR(priv->ecreq))
+ return dev_err_probe(dev, PTR_ERR(priv->ecreq),
+ "failed to get request GPIO\n");
+
+ BLOCKING_INIT_NOTIFIER_HEAD(&priv->info.notify_list);
+ mutex_init(&priv->ecreq_lock);
+
+ asus_ec_signal_request(&priv->info);
+
+ ret = asus_ec_detect(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to detect EC version\n");
+
+ ret = devm_request_threaded_irq(dev, client->irq, NULL,
+ &asus_ec_interrupt,
+ IRQF_ONESHOT | IRQF_SHARED,
+ client->name, priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to register IRQ\n");
+
+ /* Parent I2C controller uses DMA, ASUS EC and child devices do not */
+ client->dev.coherent_dma_mask = 0;
+ client->dev.dma_mask = &client->dev.coherent_dma_mask;
+
+ if (IS_ENABLED(CONFIG_DEBUG_FS))
+ devm_asus_ec_debugfs_init(dev);
+
+ return devm_mfd_add_devices(dev, 0, priv->data->mfd_devices,
+ priv->data->num_devices, NULL, 0, NULL);
+}
+
+static const struct mfd_cell asus_ec_sl101_dock_mfd_devices[] = {
+ {
+ .name = "asus-transformer-ec-kbc",
+ },
+};
+
+static const struct asus_ec_chip_data asus_ec_sl101_dock_data = {
+ .name = "dock",
+ .mfd_devices = asus_ec_sl101_dock_mfd_devices,
+ .num_devices = ARRAY_SIZE(asus_ec_sl101_dock_mfd_devices),
+ .clr_fmode = false,
+};
+
+static const struct mfd_cell asus_ec_tf101_dock_mfd_devices[] = {
+ {
+ .name = "asus-transformer-ec-battery",
+ .id = 1,
+ }, {
+ .name = "asus-transformer-ec-charger",
+ .id = 1,
+ }, {
+ .name = "asus-transformer-ec-led",
+ .id = 1,
+ }, {
+ .name = "asus-transformer-ec-keys",
+ }, {
+ .name = "asus-transformer-ec-kbc",
+ },
+};
+
+static const struct asus_ec_chip_data asus_ec_tf101_dock_data = {
+ .name = "dock",
+ .mfd_devices = asus_ec_tf101_dock_mfd_devices,
+ .num_devices = ARRAY_SIZE(asus_ec_tf101_dock_mfd_devices),
+ .clr_fmode = false,
+};
+
+static const struct mfd_cell asus_ec_tf201_pad_mfd_devices[] = {
+ {
+ .name = "asus-transformer-ec-battery",
+ .id = 0,
+ }, {
+ .name = "asus-transformer-ec-led",
+ .id = 0,
+ },
+};
+
+static const struct asus_ec_chip_data asus_ec_tf201_pad_data = {
+ .name = "pad",
+ .mfd_devices = asus_ec_tf201_pad_mfd_devices,
+ .num_devices = ARRAY_SIZE(asus_ec_tf201_pad_mfd_devices),
+ .clr_fmode = true,
+};
+
+static const struct mfd_cell asus_ec_tf600t_pad_mfd_devices[] = {
+ {
+ .name = "asus-transformer-ec-battery",
+ .id = 0,
+ }, {
+ .name = "asus-transformer-ec-charger",
+ .id = 0,
+ }, {
+ .name = "asus-transformer-ec-led",
+ .id = 0,
+ },
+};
+
+static const struct asus_ec_chip_data asus_ec_tf600t_pad_data = {
+ .name = "pad",
+ .mfd_devices = asus_ec_tf600t_pad_mfd_devices,
+ .num_devices = ARRAY_SIZE(asus_ec_tf600t_pad_mfd_devices),
+ .clr_fmode = true,
+};
+
+static const struct of_device_id asus_ec_match[] = {
+ { .compatible = "asus,sl101-ec-dock", .data = &asus_ec_sl101_dock_data },
+ { .compatible = "asus,tf101-ec-dock", .data = &asus_ec_tf101_dock_data },
+ { .compatible = "asus,tf201-ec-pad", .data = &asus_ec_tf201_pad_data },
+ { .compatible = "asus,tf600t-ec-pad", .data = &asus_ec_tf600t_pad_data },
+ { }
+};
+MODULE_DEVICE_TABLE(of, asus_ec_match);
+
+static struct i2c_driver asus_ec_driver = {
+ .driver = {
+ .name = "asus-transformer-ec",
+ .of_match_table = asus_ec_match,
+ },
+ .probe = asus_ec_probe,
+};
+module_i2c_driver(asus_ec_driver);
+
+MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("ASUS Transformer's EC driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/asus-transformer-ec.h b/include/linux/mfd/asus-transformer-ec.h
new file mode 100644
index 000000000000..0a72de40352e
--- /dev/null
+++ b/include/linux/mfd/asus-transformer-ec.h
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __MFD_ASUS_TRANSFORMER_EC_H
+#define __MFD_ASUS_TRANSFORMER_EC_H
+
+#include <linux/notifier.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+
+struct i2c_client;
+
+struct asusec_info {
+ const char *model;
+ const char *name;
+ struct i2c_client *dockram;
+ struct workqueue_struct *wq;
+ struct blocking_notifier_head notify_list;
+};
+
+#define DOCKRAM_ENTRIES 0x100
+#define DOCKRAM_ENTRY_SIZE 32
+#define DOCKRAM_ENTRY_BUFSIZE (DOCKRAM_ENTRY_SIZE + 1)
+
+/* interrupt sources */
+#define ASUSEC_OBF_MASK BIT(0)
+#define ASUSEC_KEY_MASK BIT(2)
+#define ASUSEC_KBC_MASK BIT(3)
+#define ASUSEC_AUX_MASK BIT(5)
+#define ASUSEC_SCI_MASK BIT(6)
+#define ASUSEC_SMI_MASK BIT(7)
+
+/* SMI notification codes */
+#define ASUSEC_SMI_POWER_NOTIFY 0x31 /* [un]plugging USB cable */
+#define ASUSEC_SMI_HANDSHAKE 0x50 /* response to ec_req edge */
+#define ASUSEC_SMI_WAKE 0x53
+#define ASUSEC_SMI_RESET 0x5f
+#define ASUSEC_SMI_ADAPTER_EVENT 0x60 /* [un]plugging charger to dock */
+#define ASUSEC_SMI_BACKLIGHT_ON 0x63
+#define ASUSEC_SMI_AUDIO_DOCK_IN 0x70
+
+#define ASUSEC_SMI_ACTION(code) (ASUSEC_SMI_MASK | ASUSEC_OBF_MASK | \
+ (ASUSEC_SMI_##code << 8))
+
+/* control register [0x0a] layout */
+#define ASUSEC_CTL_SIZE 8
+
+/*
+ * EC reports power from 40-pin connector in the LSB of the control
+ * register. The following values have been observed (xor 0x02):
+ *
+ * PAD-ec no-plug 0x40 / PAD-ec DOCK 0x20 / DOCK-ec no-plug 0x40
+ * PAD-ec AC 0x25 / PAD-ec DOCK+AC 0x24 / DOCK-ec AC 0x25
+ * PAD-ec USB 0x45 / PAD-ec DOCK+USB 0x24 / DOCK-ec USB 0x41
+ */
+
+#define ASUSEC_CTL_DIRECT_POWER_SOURCE BIT_ULL(0)
+#define ASUSEC_STAT_CHARGING BIT_ULL(2)
+#define ASUSEC_CTL_FULL_POWER_SOURCE BIT_ULL(5)
+#define ASUSEC_CTL_SUSB_MODE BIT_ULL(9)
+#define ASUSEC_CMD_SUSPEND_S3 BIT_ULL(33)
+#define ASUSEC_CTL_TEST_DISCHARGE BIT_ULL(35)
+#define ASUSEC_CMD_SUSPEND_INHIBIT BIT_ULL(37)
+#define ASUSEC_CTL_FACTORY_MODE BIT_ULL(38)
+#define ASUSEC_CTL_KEEP_AWAKE BIT_ULL(39)
+#define ASUSEC_CTL_USB_CHARGE BIT_ULL(40)
+#define ASUSEC_CTL_LED_BLINK BIT_ULL(40)
+#define ASUSEC_CTL_LED_AMBER BIT_ULL(41)
+#define ASUSEC_CTL_LED_GREEN BIT_ULL(42)
+#define ASUSEC_CMD_SWITCH_HDMI BIT_ULL(56)
+#define ASUSEC_CMD_WIN_SHUTDOWN BIT_ULL(62)
+
+#define ASUSEC_DOCKRAM_INFO_MODEL 0x01
+#define ASUSEC_DOCKRAM_INFO_FW 0x02
+#define ASUSEC_DOCKRAM_INFO_CFGFMT 0x03
+#define ASUSEC_DOCKRAM_INFO_HW 0x04
+#define ASUSEC_DOCKRAM_CONTROL 0x0a
+#define ASUSEC_DOCKRAM_BATT_CTL 0x14
+
+#define ASUSEC_WRITE_BUF 0x64
+#define ASUSEC_READ_BUF 0x6a
+
+/* dockram comm */
+int asus_dockram_read(struct i2c_client *client, int reg, char *buf);
+int asus_dockram_write(struct i2c_client *client, int reg, const char *buf);
+int asus_dockram_access_ctl(struct i2c_client *client,
+ u64 *out, u64 mask, u64 xor);
+
+/* EC public API */
+
+/**
+ * cell_to_ec - Request the shared ASUS EC structure via a subdevice's pdev.
+ * @pdev: EC subdevice pdev requesting access to the shared ASUS EC structure.
+ *
+ * Returns a pointer to the asusec_info structure.
+ */
+static inline struct asusec_info *cell_to_ec(struct platform_device *pdev)
+{
+ return dev_get_drvdata(pdev->dev.parent);
+}
+
+/**
+ * asus_ec_get_ctl - Read from the DockRAM control register.
+ * @ec: Pointer to the shared ASUS EC structure.
+ * @out: Pointer to the variable where the register value will be stored.
+ *
+ * Performs a control register read and stores the value in @out.
+ *
+ * Return: 0 on success, or a negative errno code on failure.
+ */
+static inline int asus_ec_get_ctl(const struct asusec_info *ec, u64 *out)
+{
+ return asus_dockram_access_ctl(ec->dockram, out, 0, 0);
+}
+
+/**
+ * asus_ec_update_ctl - Update the DockRAM control register.
+ * @ec: Pointer to the shared ASUS EC structure.
+ * @mask: Bitmask of bits to be cleared.
+ * @xor: Bitmask of bits to be toggled or set (via XOR).
+ *
+ * Performs a read-modify-write update on the control register using
+ * the provided @mask and @xor values.
+ *
+ * Return: 0 on success, or a negative errno code on failure.
+ */
+static inline int asus_ec_update_ctl(const struct asusec_info *ec,
+ u64 mask, u64 xor)
+{
+ return asus_dockram_access_ctl(ec->dockram, NULL, mask, xor);
+}
+
+/**
+ * asus_ec_set_ctl_bits - Sets bits of the DockRAM control register.
+ * @ec: Pointer to the shared ASUS EC structure.
+ * @mask: Bitmask of bits to be set.
+ *
+ * Sets bits of the control register using the provided @mask value.
+ *
+ * Return: 0 on success, or a negative errno code on failure.
+ */
+static inline int asus_ec_set_ctl_bits(const struct asusec_info *ec, u64 mask)
+{
+ return asus_dockram_access_ctl(ec->dockram, NULL, mask, mask);
+}
+
+/**
+ * asus_ec_clear_ctl_bits - Clears bits of the DockRAM control register.
+ * @ec: Pointer to the shared ASUS EC structure.
+ * @mask: Bitmask of bits to be cleared.
+ *
+ * Clears bits of the control register using the provided @mask value.
+ *
+ * Return: 0 on success, or a negative errno code on failure.
+ */
+static inline int asus_ec_clear_ctl_bits(const struct asusec_info *ec, u64 mask)
+{
+ return asus_dockram_access_ctl(ec->dockram, NULL, mask, 0);
+}
+
+int asus_ec_i2c_command(const struct asusec_info *ec, u16 data);
+int devm_asus_ec_register_notifier(struct platform_device *dev,
+ struct notifier_block *nb);
+#endif /* __MFD_ASUS_TRANSFORMER_EC_H */
--
2.51.0
^ permalink raw reply related
* [PATCH v4 1/7] dt-bindings: embedded-controller: document ASUS Transformer EC
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
In-Reply-To: <20260223063059.11322-1-clamor95@gmail.com>
Document embedded controller used in ASUS Transformer device series.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
.../asus,tf201-ec-pad.yaml | 105 ++++++++++++++++++
1 file changed, 105 insertions(+)
create mode 100644 Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml
diff --git a/Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml b/Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml
new file mode 100644
index 000000000000..6a61c88f9046
--- /dev/null
+++ b/Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/embedded-controller/asus,tf201-ec-pad.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASUS Transformer's Embedded Controller
+
+description:
+ Several Nuvoton based Embedded Controllers attached to an I2C bus,
+ running a custom ASUS firmware, specific to the ASUS Transformer
+ device series.
+
+maintainers:
+ - Svyatoslav Ryhel <clamor95@gmail.com>
+
+allOf:
+ - $ref: /schemas/power/supply/power-supply.yaml
+
+properties:
+ compatible:
+ description:
+ The 'pad' suffix is used for the controller within the tablet, while
+ the 'dock' suffix refers to the controller in the mobile dock keyboard.
+ oneOf:
+ - enum:
+ - asus,sl101-ec-dock
+ - asus,tf101-ec-dock
+ - asus,tf201-ec-pad
+ - asus,tf600t-ec-pad
+
+ - items:
+ - enum:
+ - asus,tf101g-ec-dock
+ - asus,tf201-ec-dock
+ - asus,tf300t-ec-dock
+ - asus,tf300tg-ec-dock
+ - asus,tf300tl-ec-dock
+ - asus,tf700t-ec-dock
+ - const: asus,tf101-ec-dock
+
+ - items:
+ - enum:
+ - asus,tf300t-ec-pad
+ - asus,tf300tg-ec-pad
+ - asus,tf300tl-ec-pad
+ - asus,tf700t-ec-pad
+ - const: asus,tf201-ec-pad
+
+ - items:
+ - enum:
+ - asus,p1801-t-ec-pad
+ - asus,tf701t-ec-pad
+ - const: asus,tf600t-ec-pad
+
+ reg:
+ description:
+ The ASUS Transformer EC has a main I2C address and an associated
+ DockRAM device, which provides power-related functions for the
+ embedded controller. Both addresses are required for operation.
+ minItems: 2
+
+ reg-names:
+ items:
+ - const: ec
+ - const: dockram
+
+ interrupts:
+ maxItems: 1
+
+ request-gpios:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - request-gpios
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ embedded-controller@19 {
+ compatible = "asus,tf201-ec-dock", "asus,tf101-ec-dock";
+ reg = <0x19>, <0x1b>;
+ reg-names = "ec", "dockram";
+
+ interrupt-parent = <&gpio>;
+ interrupts = <151 IRQ_TYPE_LEVEL_LOW>;
+
+ request-gpios = <&gpio 134 GPIO_ACTIVE_LOW>;
+
+ monitored-battery = <&dock_battery>;
+ };
+ };
+...
--
2.51.0
^ permalink raw reply related
* [PATCH v4 0/7] mfd: Add support for Asus Transformer embedded controller
From: Svyatoslav Ryhel @ 2026-02-23 6:30 UTC (permalink / raw)
To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Dmitry Torokhov,
Lee Jones, Pavel Machek, Sebastian Reichel, Svyatoslav Ryhel,
Ion Agorria, Michał Mirosław
Cc: devicetree, linux-kernel, linux-input, linux-leds, linux-pm
Add support for embedded controller used in Asus Transformers for
managing power and input functions.
---
Changes in v2:
- converted sysfs debug exports into debugfs
- added kernel-doc comments for exposed functions
- fixed minor typos and inconsistencies
Changes in v3:
- dropped DockRAM commits (both schema and driver)
- integrated DockRAM functionality directly into the controller driver
- EC schema moved to embedded controllers folder
- removed all cell descriptions from the schema
- removed all compatibles from the cell drivers
- adjusted naming conventions to better align with the ASUS Transformers
- defined EC variant sets to provide coverage for all known devices
Changes in v4:
- grouped known programming models of EC chronologically (both schema
and driver)
- call debugfs init only if CONFIG_DEBUG_FS is enabled
---
Michał Mirosław (6):
mfd: Add driver for ASUS Transformer embedded controller
input: serio: Add driver for ASUS Transformer dock keyboard and
touchpad
input: keyboard: Add driver for ASUS Transformer dock multimedia keys
leds: Add driver for ASUS Transformer LEDs
power: supply: Add driver for ASUS Transformer battery
power: supply: Add charger driver for Asus Transformers
Svyatoslav Ryhel (1):
dt-bindings: embedded-controller: document ASUS Transformer EC
.../asus,tf201-ec-pad.yaml | 105 +++
drivers/input/keyboard/Kconfig | 10 +
drivers/input/keyboard/Makefile | 1 +
.../input/keyboard/asus-transformer-ec-keys.c | 272 +++++++
drivers/input/serio/Kconfig | 15 +
drivers/input/serio/Makefile | 1 +
drivers/input/serio/asus-transformer-ec-kbc.c | 147 ++++
drivers/leds/Kconfig | 11 +
drivers/leds/Makefile | 1 +
drivers/leds/leds-asus-transformer-ec.c | 79 ++
drivers/mfd/Kconfig | 14 +
drivers/mfd/Makefile | 1 +
drivers/mfd/asus-transformer-ec.c | 762 ++++++++++++++++++
drivers/power/supply/Kconfig | 22 +
drivers/power/supply/Makefile | 2 +
.../supply/asus-transformer-ec-battery.c | 272 +++++++
.../supply/asus-transformer-ec-charger.c | 193 +++++
include/linux/mfd/asus-transformer-ec.h | 162 ++++
18 files changed, 2070 insertions(+)
create mode 100644 Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml
create mode 100644 drivers/input/keyboard/asus-transformer-ec-keys.c
create mode 100644 drivers/input/serio/asus-transformer-ec-kbc.c
create mode 100644 drivers/leds/leds-asus-transformer-ec.c
create mode 100644 drivers/mfd/asus-transformer-ec.c
create mode 100644 drivers/power/supply/asus-transformer-ec-battery.c
create mode 100644 drivers/power/supply/asus-transformer-ec-charger.c
create mode 100644 include/linux/mfd/asus-transformer-ec.h
--
2.51.0
^ permalink raw reply
* Re: [PATCH 5/7] Input: cros_ec_keyb - simplify cros_ec_keyb_work()
From: Tzung-Bi Shih @ 2026-02-23 4:41 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: Fabio Baltieri, Benson Leung, Guenter Roeck, Simon Glass,
linux-input, chrome-platform, linux-kernel
In-Reply-To: <aZvOVKUkPBinrSvm@google.com>
On Sun, Feb 22, 2026 at 07:49:54PM -0800, Dmitry Torokhov wrote:
> On Sun, Feb 22, 2026 at 06:47:46PM +0800, Tzung-Bi Shih wrote:
> > On Sat, Feb 21, 2026 at 04:37:13PM -0800, Dmitry Torokhov wrote:
> > > @@ -376,12 +378,10 @@ static int cros_ec_keyb_work(struct notifier_block *nb,
> > > pm_wakeup_event(ckdev->dev, 0);
> > >
> > > if (ckdev->ec->event_data.event_type == EC_MKBP_EVENT_BUTTON) {
> >
> > This can also be simplified: `event_data->event_type`.
>
> Indeed, will update.
Feel free to use my R-b tag after applying the change:
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
^ permalink raw reply
* Re: [PATCH 7/7] Input: cros_ec_keyb - factor out column processing
From: Tzung-Bi Shih @ 2026-02-23 4:40 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: Fabio Baltieri, Benson Leung, Guenter Roeck, Simon Glass,
linux-input, chrome-platform, linux-kernel
In-Reply-To: <aZvOcaGq3VAVV2Oh@google.com>
On Sun, Feb 22, 2026 at 07:51:10PM -0800, Dmitry Torokhov wrote:
> On Sun, Feb 22, 2026 at 06:48:18PM +0800, Tzung-Bi Shih wrote:
> > On Sat, Feb 21, 2026 at 04:37:15PM -0800, Dmitry Torokhov wrote:
> > > +static void cros_ec_keyy_process_col(struct cros_ec_keyb *ckdev, int col,
> > > + u8 col_state, u8 changed)
> >
> > What does the second 'y' of keyy stand for?
>
> It was supposed to be "keyb", I'll fix it before applying.
Feel free to use my R-b tag after applying the change:
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
^ permalink raw reply
* Re: [PATCH] ARM: dts: qcom: msm8960: expressatt: Add coreriver,tc360-touchkey
From: Dmitry Torokhov @ 2026-02-23 3:54 UTC (permalink / raw)
To: Rudraksha Gupta
Cc: Konrad Dybcio, Bjorn Andersson, Konrad Dybcio, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, linux-arm-msm, devicetree,
linux-kernel, beomho.seo, jcsing.lee, linux-input,
nick.reitemeyer
In-Reply-To: <1ebc2e1b-f1aa-4559-90a0-feb628d5bfe1@gmail.com>
Hi Rudraksha,
On Thu, Feb 19, 2026 at 08:33:43PM -0800, Rudraksha Gupta wrote:
> Hello all,
>
>
> Top posting for once (context below).
>
> Not too sure what the next steps are to get the tm2 touchkey in. Should I
> resend the patch, contact someone else that can help provide guidance, or
> something else?
>
>
> Adding Dmitry Torokhov (official maintainer) and Nick Reitemeyer (person who
> introduced this variant).
Sorry, I am not sure what the question is... It seems that you made the
driver work without any additional changes?
>
>
> Thanks,
>
> Rudraksha
>
>
> On 12/16/25 04:59, Konrad Dybcio wrote:
> > On 12/9/25 8:10 AM, Rudraksha Gupta wrote:
> > > > > Add the tc360 touchkey. It's unknown if this is the actual model of the
> > > > > touchkey, as downstream doesn't mention a variant, but this works.
> > > > >
> > > > > Link:
> > > > > https://github.com/LineageOS/android_kernel_samsung_d2/blob/stable/cm-12.0-YNG4N/drivers/input/keyboard/cypress_touchkey_236/Makefile#L5
> > > > This driver mentions a register called CYPRESS_MODULE_VER - maybe
> > > > it could help confirm the model?
> > > >
> > > > Konrad
> > [...]
> >
> > > When run on mainline, this is what was outputted:
> > >
> > > samsung-expressatt:~$ cat /sys/bus/i2c/devices/0-0020/module_version
> > > 0x06
> > > samsung-expressatt:~$ cat /sys/bus/i2c/devices/0-0020/fw_version
> > > 0x09
> > >
> > >
> > > fw_version matches downstream ClockworkMod Recovery dmesg:
> > >
> > > ~ # dmesg | grep "FW Ver"
> > > <3>[ 2.201312] cypress_touchkey 16-0020: Touchkey FW Version: 0x09
> > > <3>[ 2.206317] cypress_touchkey 16-0020: Touchkey FW Version: 0x09, system_rev: 8
> > >
> > >
> > > Unfortunately, I'm not to sure what the other variant versions are, so I will CC the driver's maintainers:
> > >
> > > MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
> > > MODULE_AUTHOR("Jaechul Lee <jcsing.lee@samsung.com>");
> > Sounds like the best idea, I have no clue either
> >
> > Konrad
> >
--
Dmitry
^ permalink raw reply
* Re: [PATCH] Input: adxl34x - Drop redundant error variable in adxl34x_i2c_probe
From: Dmitry Torokhov @ 2026-02-23 3:53 UTC (permalink / raw)
To: Thorsten Blum; +Cc: linux-input, linux-kernel
In-Reply-To: <20260223000308.319335-1-thorsten.blum@linux.dev>
On Mon, Feb 23, 2026 at 01:03:04AM +0100, Thorsten Blum wrote:
> Inline i2c_check_functionality(), which really returns a bool and not an
> error code, and remove the local variable. No functional changes.
>
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Applied, thank you.
--
Dmitry
^ permalink raw reply
page: next (older) | prev (newer) | latest
- recent:[subjects (threaded)|topics (new)|topics (active)]
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox