* [PATCH v11 12/13] leds: Add common LED binding parsing support to LED class/core
From: Matti Vaittinen @ 2020-01-20 6:42 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
Quick grep for 'for_each' or 'linux,default-trigger' or
'default-state' under drivers/leds can tell quite a lot. It seems
multiple LED controller drivers implement the very similar looping
through the child nodes in order to locate the LED nodes and read
and support the common LED dt bindings. Implementing this same
stuff for all LED controllers gets old pretty fast.
This commit adds support for locating the LED node (based on known
node names - or given property name-value pair) and handling of
few common LED properties.
linux,default-trigger,
default-state (with the exception of keep),
(in addition to already handled
function-enumerator,
function,
color
and label).
The handling of linux,default-trigger and default-state are omitted
if init_data->parse_fwnode is not set to true. Thus the existing
LED drivers are not impacted until they set this field to true.
Regarding the node look-up:
1. If no init_data is given, then no node-lookup is done and cdev
name is used as such. (as was earlier)
2. If neither match_property nor of_match is given then passed starting
point is used as such. (as was earlier - it might help in
few cases to use dev_fwnode() here but that would change existing
logic and possibly cause some existing setup to break).
3. If init_data is given but no starting point for node lookup - then
(parent) device's own DT node is used as starting point for look-up.
4. The match_property has priority over of_match and is first used for
look-up. If a node with matching property is found then the found node
is used.
5. If no match_property is given or no mathicng property was found then
of_macth is used. The node which name matches of_match is searched for
and used if found.
This ensures that existing drivers which do not populate of_match or
match_property in init_data wont be impacted bu node look-up.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
No changes since v10
drivers/leds/led-class.c | 115 +++++++++++++++--
drivers/leds/led-core.c | 258 ++++++++++++++++++++++++++++++++-------
include/linux/leds.h | 94 ++++++++++++--
3 files changed, 401 insertions(+), 66 deletions(-)
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 438774315e6c..170ab227eaa9 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -235,6 +235,32 @@ static int led_classdev_next_name(const char *init_name, char *name,
return i;
}
+static void led_add_props(struct led_classdev *ld, struct led_properties *props)
+{
+ if (props->default_trigger)
+ ld->default_trigger = props->default_trigger;
+ /*
+ * According to binding docs the LED is by-default turned OFF unless
+ * default_state is used to indicate it should be ON or that state
+ * should be kept as is
+ */
+ if (props->default_state) {
+ ld->brightness = LED_OFF;
+ if (!strcmp(props->default_state, "on")) {
+ if (!ld->max_brightness)
+ ld->brightness = LED_FULL;
+ else
+ ld->brightness = ld->max_brightness;
+ /*
+ * We probably should not call the brightness_get prior calling
+ * the of_parse_cb if one is provided.
+ * Add a flag to advertice that state should be queried and kept as-is.
+ */
+ } else if (!strcmp(props->default_state, "keep"))
+ props->brightness_keep = true;
+ }
+}
+
/**
* led_classdev_register_ext - register a new object of led_classdev class
* with init data.
@@ -251,22 +277,69 @@ int led_classdev_register_ext(struct device *parent,
char final_name[LED_MAX_NAME_SIZE];
const char *proposed_name = composed_name;
int ret;
-
+ struct led_properties props = {0};
+ struct fwnode_handle *fw;
+
+ /*
+ * We don't try getting the name based on DT node if init-data is not
+ * given. We could see if we find LED properties from the device's node
+ * but that might change LED names for old users of
+ * led_classdev_register who have been providing the LED name in
+ * cdev->name. So we seek fwnode for names only if init_data is given
+ */
if (init_data) {
+ led_cdev->init_data = init_data;
if (init_data->devname_mandatory && !init_data->devicename) {
dev_err(parent, "Mandatory device name is missing");
return -EINVAL;
}
- ret = led_compose_name(parent, init_data, composed_name);
+
+ fw = led_get_fwnode(parent, init_data);
+ if (IS_ERR(fw))
+ return PTR_ERR(fw);
+
+ if (fw) {
+ /*
+ * We did increase refcount for fwnode. Let's set a flag
+ * so we can decrease it during deregistration
+ */
+ led_cdev->fwnode_owned = true;
+
+ ret = led_parse_fwnode_props(parent, fw, &props);
+ if (ret)
+ goto err_out;
+
+ if (init_data->of_parse_cb)
+ ret = init_data->of_parse_cb(led_cdev, fw,
+ &props);
+ if (ret < 0)
+ goto err_out;
+
+ /*
+ * Handle the common LED properties only for drivers
+ * that explicitly request it. This allows us to test
+ * and convert drivers to utilize common LED parsing one
+ * by one.
+ */
+ if (init_data->parse_fwnode)
+ led_add_props(led_cdev, &props);
+
+ } else {
+ led_cdev->fwnode_owned = false;
+ }
+ ret = led_compose_name(parent, init_data, &props,
+ composed_name);
if (ret < 0)
- return ret;
+ goto err_out;
} else {
proposed_name = led_cdev->name;
+ led_cdev->fwnode_owned = false;
+ fw = NULL;
}
ret = led_classdev_next_name(proposed_name, final_name, sizeof(final_name));
if (ret < 0)
- return ret;
+ goto err_out;
mutex_init(&led_cdev->led_access);
mutex_lock(&led_cdev->led_access);
@@ -274,22 +347,28 @@ int led_classdev_register_ext(struct device *parent,
led_cdev, led_cdev->groups, "%s", final_name);
if (IS_ERR(led_cdev->dev)) {
mutex_unlock(&led_cdev->led_access);
- return PTR_ERR(led_cdev->dev);
+ ret = PTR_ERR(led_cdev->dev);
+ goto err_out;
}
- if (init_data && init_data->fwnode)
- led_cdev->dev->fwnode = init_data->fwnode;
+ if (fw)
+ led_cdev->dev->fwnode = fw;
if (ret)
dev_warn(parent, "Led %s renamed to %s due to name collision",
led_cdev->name, dev_name(led_cdev->dev));
+ if (props.brightness_keep)
+ if (led_cdev->brightness_get)
+ led_cdev->brightness =
+ led_cdev->brightness_get(led_cdev);
+
if (led_cdev->flags & LED_BRIGHT_HW_CHANGED) {
ret = led_add_brightness_hw_changed(led_cdev);
if (ret) {
device_unregister(led_cdev->dev);
led_cdev->dev = NULL;
mutex_unlock(&led_cdev->led_access);
- return ret;
+ goto err_out;
}
}
@@ -322,6 +401,17 @@ int led_classdev_register_ext(struct device *parent,
led_cdev->name);
return 0;
+err_out:
+ if (led_cdev->fwnode_owned) {
+ fwnode_handle_put(fw);
+ /*
+ * This might not be needed as 'fwnode_owned' is always
+ * initialized in led_classdev_register_ext
+ */
+ led_cdev->fwnode_owned = false;
+ }
+
+ return ret;
}
EXPORT_SYMBOL_GPL(led_classdev_register_ext);
@@ -355,6 +445,15 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
if (led_cdev->flags & LED_BRIGHT_HW_CHANGED)
led_remove_brightness_hw_changed(led_cdev);
+ if (led_cdev->fwnode_owned) {
+ fwnode_handle_put(led_cdev->dev->fwnode);
+ /*
+ * This might not be needed as 'fwnode_owned' is always
+ * initialized in led_classdev_register_ext
+ */
+ led_cdev->fwnode_owned = false;
+ }
+
device_unregister(led_cdev->dev);
down_write(&leds_list_lock);
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index f1f718dbe0f8..3cd1784494f2 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -365,70 +365,226 @@ void led_sysfs_enable(struct led_classdev *led_cdev)
}
EXPORT_SYMBOL_GPL(led_sysfs_enable);
-static void led_parse_fwnode_props(struct device *dev,
- struct fwnode_handle *fwnode,
- struct led_properties *props)
+static int fw_is_match(struct fwnode_handle *fw,
+ struct led_fw_match_property *mp, void *val)
{
- int ret;
+ void *cmp = mp->raw_val;
+ int ret = -EINVAL;
+
+ if (mp->raw_val) {
+ ret = fwnode_property_read_u8_array(fw, mp->name, val,
+ mp->size);
+ } else if (mp->intval) {
+ cmp = mp->intval;
+ switch (mp->size) {
+ case 1:
+ ret = fwnode_property_read_u8_array(fw, mp->name, val,
+ mp->size);
+ break;
+ case 2:
+ ret = fwnode_property_read_u16_array(fw, mp->name, val,
+ mp->size);
+ break;
+ case 4:
+ ret = fwnode_property_read_u32_array(fw, mp->name, val,
+ mp->size);
+ break;
+ case 8:
+ ret = fwnode_property_read_u64_array(fw, mp->name, val,
+ mp->size);
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ if (!ret && cmp)
+ if (!memcmp(val, cmp, mp->size))
+ return 1;
+
+ return 0;
+}
+/**
+ * led_get_fwnode - find fwnode for led
+ * @parent LED controller device
+ * @init_data led init data with match information
+ *
+ * Scans the firmware nodes and returns node matching the given init_data.
+ * NOTE: Function increases refcount for found node. Caller must decrease
+ * refcount using fwnode_handle_put when finished with node.
+ */
+struct fwnode_handle *led_get_fwnode(struct device *parent,
+ struct led_init_data *init_data)
+{
+ struct fwnode_handle *fw;
+
+ /*
+ * This should never be called without init data. We could always return
+ * dev_fwnode() - but then we should pump-up the refcount
+ */
+ if (!init_data)
+ return NULL;
+
+ /*
+ * For now we do only do node look-up for drivers which populate
+ * the new match properties. We could and perhaps should do
+ * fw = dev_fwnode(parent); if given fwnode is NULL. But in order not to
+ * break the existing setups we keep the old behaviour and just directly
+ * use the given init_data->fwnode no matter if it is NULL or not.
+ */
+
+ if ((!init_data->match_property.name ||
+ !init_data->match_property.size) && !init_data->of_match)
+ return fwnode_handle_get(init_data->fwnode);
+
+ /* match information was given - do node look-up */
+
+ if (!init_data->fwnode)
+ fw = dev_fwnode(parent);
+ else
+ fw = init_data->fwnode;
+
+ if (!fw)
+ return NULL;
+
+ /*
+ * Simple things are pretty. I think simplest is to use DT node-name
+ * for matching the node with LED - same way regulators use the node
+ * name to match with desc.
+ *
+ * This may not work with existing LED DT entries if the node name has
+ * been freely pickable. In order to this to work the binding doc
+ * for LED driver should define usable node names.
+ *
+ * If this is not working we can define specific match property which
+ * value we scan and use for matching for LEDs connected to the
+ * controller.
+ */
+ if (init_data->match_property.name && init_data->match_property.size) {
+ u8 *val;
+ int ret;
+ struct fwnode_handle *child;
+ struct led_fw_match_property *mp;
+
+ mp = &init_data->match_property;
+
+ val = kzalloc(mp->size, GFP_KERNEL);
+ if (!val)
+ return ERR_PTR(-ENOMEM);
+
+ fwnode_for_each_child_node(fw, child) {
+ ret = fw_is_match(child, mp, val);
+ if (ret > 0) {
+ kfree(val);
+ return child;
+ }
+ if (ret < 0) {
+ dev_err(parent,
+ "invalid fw match. Use raw_val?\n");
+ fwnode_handle_put(child);
+ break;
+ }
+ }
+ kfree(val);
+ }
+ if (init_data->of_match)
+ fw = fwnode_get_named_child_node(fw, init_data->of_match);
+
+ return fw;
+}
+EXPORT_SYMBOL(led_get_fwnode);
+
+int led_parse_fwnode_props(struct device *dev, struct fwnode_handle *fwnode,
+ struct led_properties *props)
+{
+ int ret = 0;
if (!fwnode)
- return;
+ return 0;
if (fwnode_property_present(fwnode, "label")) {
ret = fwnode_property_read_string(fwnode, "label", &props->label);
if (ret)
dev_err(dev, "Error parsing 'label' property (%d)\n", ret);
- return;
+ return ret;
}
+ /*
+ * Please note, logic changed - if invalid property is found we bail
+ * early out without parsing the rest of the properties. Originally
+ * this was the case only for 'label' property. I don't know the
+ * rationale behind original logic allowing invalid properties to be
+ * given. If there is a reason then we should reconsider this.
+ * Intuitively it feels correct to just yell and quit if we hit value we
+ * don't understand - but intuition may be wrong at times :)
+ */
if (fwnode_property_present(fwnode, "color")) {
ret = fwnode_property_read_u32(fwnode, "color", &props->color);
- if (ret)
+ if (ret) {
dev_err(dev, "Error parsing 'color' property (%d)\n", ret);
- else if (props->color >= LED_COLOR_ID_MAX)
+ return ret;
+ } else if (props->color >= LED_COLOR_ID_MAX) {
dev_err(dev, "LED color identifier out of range\n");
- else
- props->color_present = true;
+ return ret;
+ }
+ props->color_present = true;
}
+ if (fwnode_property_present(fwnode, "function")) {
+ ret = fwnode_property_read_string(fwnode, "function",
+ &props->function);
+ if (ret) {
+ dev_err(dev,
+ "Error parsing 'function' property (%d)\n",
+ ret);
+ return ret;
+ }
+ }
- if (!fwnode_property_present(fwnode, "function"))
- return;
-
- ret = fwnode_property_read_string(fwnode, "function", &props->function);
- if (ret) {
- dev_err(dev,
- "Error parsing 'function' property (%d)\n",
- ret);
+ if (fwnode_property_present(fwnode, "function-enumerator")) {
+ ret = fwnode_property_read_u32(fwnode, "function-enumerator",
+ &props->func_enum);
+ if (ret) {
+ dev_err(dev,
+ "Error parsing 'function-enumerator' property (%d)\n",
+ ret);
+ return ret;
+ }
+ props->func_enum_present = true;
}
- if (!fwnode_property_present(fwnode, "function-enumerator"))
- return;
+ if (fwnode_property_present(fwnode, "default-state")) {
+ ret = fwnode_property_read_string(fwnode, "default-state",
+ &props->default_state);
+ if (ret) {
+ dev_err(dev,
+ "Error parsing 'default-state' property (%d)\n",
+ ret);
+ return ret;
+ }
+ }
- ret = fwnode_property_read_u32(fwnode, "function-enumerator",
- &props->func_enum);
- if (ret) {
- dev_err(dev,
- "Error parsing 'function-enumerator' property (%d)\n",
- ret);
- } else {
- props->func_enum_present = true;
+ if (fwnode_property_present(fwnode, "linux,default-trigger")) {
+ ret = fwnode_property_read_string(fwnode,
+ "linux,default-trigger",
+ &props->default_trigger);
+ if (ret)
+ dev_err(dev,
+ "Error parsing 'linux,default-trigger' property (%d)\n",
+ ret);
}
+ return ret;
}
+EXPORT_SYMBOL_GPL(led_parse_fwnode_props);
int led_compose_name(struct device *dev, struct led_init_data *init_data,
- char *led_classdev_name)
+ struct led_properties *props, char *led_classdev_name)
{
- struct led_properties props = {};
- struct fwnode_handle *fwnode = init_data->fwnode;
const char *devicename = init_data->devicename;
if (!led_classdev_name)
return -EINVAL;
- led_parse_fwnode_props(dev, fwnode, &props);
-
- if (props.label) {
+ if (props->label) {
/*
* If init_data.devicename is NULL, then it indicates that
* DT label should be used as-is for LED class device name.
@@ -436,23 +592,23 @@ int led_compose_name(struct device *dev, struct led_init_data *init_data,
* the final LED class device name.
*/
if (!devicename) {
- strscpy(led_classdev_name, props.label,
+ strscpy(led_classdev_name, props->label,
LED_MAX_NAME_SIZE);
} else {
snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
- devicename, props.label);
+ devicename, props->label);
}
- } else if (props.function || props.color_present) {
+ } else if (props->function || props->color_present) {
char tmp_buf[LED_MAX_NAME_SIZE];
- if (props.func_enum_present) {
+ if (props->func_enum_present) {
snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s-%d",
- props.color_present ? led_colors[props.color] : "",
- props.function ?: "", props.func_enum);
+ props->color_present ? led_colors[props->color] : "",
+ props->function ?: "", props->func_enum);
} else {
snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s",
- props.color_present ? led_colors[props.color] : "",
- props.function ?: "");
+ props->color_present ? led_colors[props->color] : "",
+ props->function ?: "");
}
if (init_data->devname_mandatory) {
snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
@@ -468,11 +624,19 @@ int led_compose_name(struct device *dev, struct led_init_data *init_data,
}
snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
devicename, init_data->default_label);
- } else if (is_of_node(fwnode)) {
- strscpy(led_classdev_name, to_of_node(fwnode)->name,
- LED_MAX_NAME_SIZE);
- } else
- return -EINVAL;
+ } else {
+ struct fwnode_handle *fwnode = led_get_fwnode(dev, init_data);
+ int ret = -EINVAL;
+
+ if (is_of_node(fwnode)) {
+ ret = 0;
+ strscpy(led_classdev_name, to_of_node(fwnode)->name,
+ LED_MAX_NAME_SIZE);
+ }
+ fwnode_handle_put(fwnode);
+
+ return ret;
+ }
return 0;
}
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 242258f7d837..af8ca4291d7d 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -13,6 +13,7 @@
#include <linux/kernfs.h>
#include <linux/list.h>
#include <linux/mutex.h>
+#include <linux/property.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
@@ -20,6 +21,7 @@
struct device;
struct led_pattern;
+struct led_classdev;
/*
* LED Core
*/
@@ -31,8 +33,47 @@ enum led_brightness {
LED_FULL = 255,
};
+struct led_properties {
+ u32 color;
+ bool color_present;
+ const char *function;
+ u32 func_enum;
+ bool func_enum_present;
+ const char *label;
+ const char *default_trigger;
+ const char *default_state;
+ bool brightness_keep;
+};
+
+struct led_fw_match_property {
+ const char *name; /* Name of the property to match */
+ void *raw_val; /* Raw property value as present in fwnode */
+ void *intval; /* Property value if 8,16,32 or 64bit integer */
+ size_t size; /* Size of value in bytes */
+};
+
struct led_init_data {
- /* device fwnode handle */
+ /*
+ * If DT binding dictates the node name the driver can fill of_match
+ * corresponding to node name describing this LED. If fwnode is given
+ * the match is searched from it's child nodes. If not, the match is
+ * searched from device's own child nodes.
+ */
+ const char *of_match;
+ /*
+ * If fwnode contains property with known value the driver can specify
+ * correct propertty-value pair here to do the matching. This has higher
+ * priority than of_match. If fwnode is given the match is searched
+ * from it's child nodes. If not match is searched from device's
+ * own child nodes.
+ */
+ struct led_fw_match_property match_property;
+ /*
+ * device fwnode handle. If of_match or led_compatible are not given
+ * this is used for LED as given. If of_match or led_compatible are
+ * given then this is used as a parent node whose child nodes are
+ * scanned for given match.
+ */
struct fwnode_handle *fwnode;
/*
* default <color:function> tuple, for backward compatibility
@@ -53,9 +94,19 @@ struct led_init_data {
* set it to true
*/
bool devname_mandatory;
+ /*
+ * Callback which a LED driver can register if it has own non-standard
+ * DT properties. Core calls this with the located DT node during
+ * class_device registration
+ */
+ int (*of_parse_cb)(struct led_classdev *ld, struct fwnode_handle *fw,
+ struct led_properties *props);
+ /* LED core should parse and handle the common firmware properties */
+ bool parse_fwnode;
};
struct led_classdev {
+ struct led_init_data *init_data;
const char *name;
enum led_brightness brightness;
enum led_brightness max_brightness;
@@ -148,6 +199,7 @@ struct led_classdev {
/* Ensures consistent access to the LED Flash Class device */
struct mutex led_access;
+ bool fwnode_owned;
};
/**
@@ -299,6 +351,7 @@ void led_sysfs_enable(struct led_classdev *led_cdev);
* led_compose_name - compose LED class device name
* @dev: LED controller device object
* @init_data: the LED class device initialization data
+ * @props: LED properties as parsed from fwnode.
* @led_classdev_name: composed LED class device name
*
* Create LED class device name basing on the provided init_data argument.
@@ -308,7 +361,8 @@ void led_sysfs_enable(struct led_classdev *led_cdev);
* Returns: 0 on success or negative error value on failure
*/
int led_compose_name(struct device *dev, struct led_init_data *init_data,
- char *led_classdev_name);
+ struct led_properties *props,
+ char *led_classdev_name);
/**
* led_sysfs_is_disabled - check if LED sysfs interface is disabled
@@ -321,6 +375,33 @@ static inline bool led_sysfs_is_disabled(struct led_classdev *led_cdev)
return led_cdev->flags & LED_SYSFS_DISABLE;
}
+/**
+ * led_get_fwnode - find fwnode matching given LED init data
+ * @parent: LED controller device this LED is driven by
+ * @init_data: the LED class device initialization data
+ *
+ * Find the fw node matching given LED init data.
+ * NOTE: Function increases refcount for found node. Caller must decrease
+ * refcount using fwnode_handle_put when finished with node.
+ *
+ * Returns: node handle or NULL if matching fw node was not found
+ */
+struct fwnode_handle *led_get_fwnode(struct device *parent,
+ struct led_init_data *init_data);
+
+/**
+ * led_parse_fwnode_props - parse LED common properties from fwnode
+ * @dev: pointer to LED device.
+ * @fwnode: LED node containing the properties
+ * @props: structure where found property data is stored.
+ *
+ * Parse the common LED properties from fwnode.
+ *
+ * Returns: 0 on success or negative error value on failure
+ */
+int led_parse_fwnode_props(struct device *dev, struct fwnode_handle *fwnode,
+ struct led_properties *props);
+
/*
* LED Triggers
*/
@@ -478,15 +559,6 @@ struct led_platform_data {
struct led_info *leds;
};
-struct led_properties {
- u32 color;
- bool color_present;
- const char *function;
- u32 func_enum;
- bool func_enum_present;
- const char *label;
-};
-
struct gpio_desc;
typedef int (*gpio_blink_set_t)(struct gpio_desc *desc, int state,
unsigned long *delay_on,
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 11/13] gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs
From: Matti Vaittinen @ 2020-01-20 6:41 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
ROHM BD71828 PMIC contains 4 pins which can be configured by OTP
to be used for general purposes. First 3 can be used as outputs
and 4.th pin can be used as input. Allow them to be controlled
via GPIO framework.
The driver assumes all of the pins are configured as GPIOs and
trusts that the reserved pins in other OTP configurations are
excluded from control using "gpio-reserved-ranges" device tree
property (or left untouched by GPIO users).
Typical use for 4.th pin (input) is to use it as HALL sensor
input so that this pin state is toggled when HALL sensor detects
LID position change (from close to open or open to close). PMIC
HW implements some extra logic which allows PMIC to power-up the
system when this pin is toggled. Please see the data sheet for
details of GPIO options which can be selected by OTP settings.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
No changes since v10
drivers/gpio/Kconfig | 12 +++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-bd71828.c | 159 ++++++++++++++++++++++++++++++++++++
3 files changed, 172 insertions(+)
create mode 100644 drivers/gpio/gpio-bd71828.c
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 2ed599236a1c..9a0bdf9ea463 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1021,6 +1021,18 @@ config GPIO_BD70528
This driver can also be built as a module. If so, the module
will be called gpio-bd70528.
+config GPIO_BD71828
+ tristate "ROHM BD71828 GPIO support"
+ depends on MFD_ROHM_BD71828
+ help
+ Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
+ available on the ROHM PMIC in total. The GPIOs are limited to
+ outputs only and pins must be configured to GPIO outputs by
+ OTP. Enable this only if you want to use these pins as outputs.
+
+ This driver can also be built as a module. If so, the module
+ will be called gpio-bd71828.
+
config GPIO_BD9571MWV
tristate "ROHM BD9571 GPIO support"
depends on MFD_BD9571MWV
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 34eb8b2b12dd..8629b81b5c17 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o
obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o
obj-$(CONFIG_GPIO_BCM_XGS_IPROC) += gpio-xgs-iproc.o
obj-$(CONFIG_GPIO_BD70528) += gpio-bd70528.o
+obj-$(CONFIG_GPIO_BD71828) += gpio-bd71828.o
obj-$(CONFIG_GPIO_BD9571MWV) += gpio-bd9571mwv.o
obj-$(CONFIG_GPIO_BRCMSTB) += gpio-brcmstb.o
obj-$(CONFIG_GPIO_BT8XX) += gpio-bt8xx.o
diff --git a/drivers/gpio/gpio-bd71828.c b/drivers/gpio/gpio-bd71828.c
new file mode 100644
index 000000000000..04aade9e0a4d
--- /dev/null
+++ b/drivers/gpio/gpio-bd71828.c
@@ -0,0 +1,159 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (C) 2018 ROHM Semiconductors
+
+#include <linux/gpio/driver.h>
+#include <linux/mfd/rohm-bd71828.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define GPIO_OUT_REG(off) (BD71828_REG_GPIO_CTRL1 + (off))
+#define HALL_GPIO_OFFSET 3
+
+/*
+ * These defines can be removed when
+ * "gpio: Add definition for GPIO direction"
+ * (9208b1e77d6e8e9776f34f46ef4079ecac9c3c25 in GPIO tree) gets merged,
+ */
+#ifndef GPIO_LINE_DIRECTION_IN
+ #define GPIO_LINE_DIRECTION_IN 1
+ #define GPIO_LINE_DIRECTION_OUT 0
+#endif
+
+struct bd71828_gpio {
+ struct rohm_regmap_dev chip;
+ struct gpio_chip gpio;
+};
+
+static void bd71828_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ int ret;
+ struct bd71828_gpio *bdgpio = gpiochip_get_data(chip);
+ u8 val = (value) ? BD71828_GPIO_OUT_HI : BD71828_GPIO_OUT_LO;
+
+ /*
+ * The HALL input pin can only be used as input. If this is the pin
+ * we are dealing with - then we are done
+ */
+ if (offset == HALL_GPIO_OFFSET)
+ return;
+
+ ret = regmap_update_bits(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
+ BD71828_GPIO_OUT_MASK, val);
+ if (ret)
+ dev_err(bdgpio->chip.dev, "Could not set gpio to %d\n", value);
+}
+
+static int bd71828_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ int ret;
+ unsigned int val;
+ struct bd71828_gpio *bdgpio = gpiochip_get_data(chip);
+
+ if (offset == HALL_GPIO_OFFSET)
+ ret = regmap_read(bdgpio->chip.regmap, BD71828_REG_IO_STAT,
+ &val);
+ else
+ ret = regmap_read(bdgpio->chip.regmap, GPIO_OUT_REG(offset),
+ &val);
+ if (!ret)
+ ret = (val & BD71828_GPIO_OUT_MASK);
+
+ return ret;
+}
+
+static int bd71828_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
+ unsigned long config)
+{
+ struct bd71828_gpio *bdgpio = gpiochip_get_data(chip);
+
+ if (offset == HALL_GPIO_OFFSET)
+ return -ENOTSUPP;
+
+ switch (pinconf_to_config_param(config)) {
+ case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+ return regmap_update_bits(bdgpio->chip.regmap,
+ GPIO_OUT_REG(offset),
+ BD71828_GPIO_DRIVE_MASK,
+ BD71828_GPIO_OPEN_DRAIN);
+ case PIN_CONFIG_DRIVE_PUSH_PULL:
+ return regmap_update_bits(bdgpio->chip.regmap,
+ GPIO_OUT_REG(offset),
+ BD71828_GPIO_DRIVE_MASK,
+ BD71828_GPIO_PUSH_PULL);
+ default:
+ break;
+ }
+ return -ENOTSUPP;
+}
+
+static int bd71828_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+ /*
+ * Pin usage is selected by OTP data. We can't read it runtime. Hence
+ * we trust that if the pin is not excluded by "gpio-reserved-ranges"
+ * the OTP configuration is set to OUT. (Other pins but HALL input pin
+ * on BD71828 can't really be used for general purpose input - input
+ * states are used for specific cases like regulator control or
+ * PMIC_ON_REQ.
+ */
+ if (offset == HALL_GPIO_OFFSET)
+ return GPIO_LINE_DIRECTION_IN;
+
+ return GPIO_LINE_DIRECTION_OUT;
+}
+
+static int bd71828_probe(struct platform_device *pdev)
+{
+ struct bd71828_gpio *bdgpio;
+ struct rohm_regmap_dev *bd71828;
+
+ bd71828 = dev_get_drvdata(pdev->dev.parent);
+ if (!bd71828) {
+ dev_err(&pdev->dev, "No MFD driver data\n");
+ return -EINVAL;
+ }
+
+ bdgpio = devm_kzalloc(&pdev->dev, sizeof(*bdgpio),
+ GFP_KERNEL);
+ if (!bdgpio)
+ return -ENOMEM;
+
+ bdgpio->chip.dev = &pdev->dev;
+ bdgpio->gpio.parent = pdev->dev.parent;
+ bdgpio->gpio.label = "bd71828-gpio";
+ bdgpio->gpio.owner = THIS_MODULE;
+ bdgpio->gpio.get_direction = bd71828_get_direction;
+ bdgpio->gpio.set_config = bd71828_gpio_set_config;
+ bdgpio->gpio.can_sleep = true;
+ bdgpio->gpio.get = bd71828_gpio_get;
+ bdgpio->gpio.set = bd71828_gpio_set;
+ bdgpio->gpio.base = -1;
+
+ /*
+ * See if we need some implementation to mark some PINs as
+ * not controllable based on DT info or if core can handle
+ * "gpio-reserved-ranges" and exclude them from control
+ */
+ bdgpio->gpio.ngpio = 4;
+ bdgpio->gpio.of_node = pdev->dev.parent->of_node;
+ bdgpio->chip.regmap = bd71828->regmap;
+
+ return devm_gpiochip_add_data(&pdev->dev, &bdgpio->gpio,
+ bdgpio);
+}
+
+static struct platform_driver bd71828_gpio = {
+ .driver = {
+ .name = "bd71828-gpio"
+ },
+ .probe = bd71828_probe,
+};
+
+module_platform_driver(bd71828_gpio);
+
+MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
+MODULE_DESCRIPTION("BD71828 voltage regulator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bd71828-gpio");
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 10/13] rtc: bd70528: add BD71828 support
From: Matti Vaittinen @ 2020-01-20 6:41 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
ROHM BD71828 PMIC RTC block is from many parts similar to one
on BD70528. Support BD71828 RTC using BD70528 RTC driver and
avoid re-inventing the wheel.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
No changes since v10
drivers/rtc/Kconfig | 3 +-
drivers/rtc/rtc-bd70528.c | 220 +++++++++++++++++++++++++------
include/linux/mfd/rohm-bd70528.h | 13 +-
include/linux/mfd/rohm-bd71828.h | 4 +-
include/linux/mfd/rohm-shared.h | 21 +++
5 files changed, 206 insertions(+), 55 deletions(-)
create mode 100644 include/linux/mfd/rohm-shared.h
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index d77515d8382c..df7a3843069d 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -498,12 +498,13 @@ config RTC_DRV_M41T80_WDT
help
If you say Y here you will get support for the
watchdog timer in the ST M41T60 and M41T80 RTC chips series.
+
config RTC_DRV_BD70528
tristate "ROHM BD70528 PMIC RTC"
depends on MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG)
help
If you say Y here you will get support for the RTC
- on ROHM BD70528 Power Management IC.
+ block on ROHM BD70528 and BD71828 Power Management IC.
This driver can also be built as a module. If so, the module
will be called rtc-bd70528.
diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c
index 627037aa66a8..bbbb1f07c91f 100644
--- a/drivers/rtc/rtc-bd70528.c
+++ b/drivers/rtc/rtc-bd70528.c
@@ -6,6 +6,7 @@
#include <linux/bcd.h>
#include <linux/mfd/rohm-bd70528.h>
+#include <linux/mfd/rohm-bd71828.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
@@ -15,7 +16,7 @@
/*
* We read regs RTC_SEC => RTC_YEAR
* this struct is ordered according to chip registers.
- * Keep it u8 only to avoid padding issues.
+ * Keep it u8 only (or packed) to avoid padding issues.
*/
struct bd70528_rtc_day {
u8 sec;
@@ -36,6 +37,13 @@ struct bd70528_rtc_wake {
u8 ctrl;
} __packed;
+struct bd71828_rtc_alm {
+ struct bd70528_rtc_data alm0;
+ struct bd70528_rtc_data alm1;
+ u8 alm_mask;
+ u8 alm1_mask;
+} __packed;
+
struct bd70528_rtc_alm {
struct bd70528_rtc_data data;
u8 alm_mask;
@@ -43,8 +51,10 @@ struct bd70528_rtc_alm {
} __packed;
struct bd70528_rtc {
- struct rohm_regmap_dev *mfd;
+ struct rohm_regmap_dev *parent;
struct device *dev;
+ u8 reg_time_start;
+ bool has_rtc_timers;
};
static int bd70528_set_wake(struct rohm_regmap_dev *bd70528,
@@ -123,14 +133,14 @@ static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state,
{
int ret;
- ret = bd70528_wdt_set(r->mfd, new_state & BD70528_WDT_STATE_BIT,
+ ret = bd70528_wdt_set(r->parent, new_state & BD70528_WDT_STATE_BIT,
old_state);
if (ret) {
dev_err(r->dev,
"Failed to disable WDG for RTC setting (%d)\n", ret);
return ret;
}
- ret = bd70528_set_elapsed_tmr(r->mfd,
+ ret = bd70528_set_elapsed_tmr(r->parent,
new_state & BD70528_ELAPSED_STATE_BIT,
old_state);
if (ret) {
@@ -138,7 +148,7 @@ static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state,
"Failed to disable 'elapsed timer' for RTC setting\n");
return ret;
}
- ret = bd70528_set_wake(r->mfd, new_state & BD70528_WAKE_STATE_BIT,
+ ret = bd70528_set_wake(r->parent, new_state & BD70528_WAKE_STATE_BIT,
old_state);
if (ret) {
dev_err(r->dev,
@@ -152,12 +162,18 @@ static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state,
static int bd70528_re_enable_rtc_based_timers(struct bd70528_rtc *r,
int old_state)
{
+ if (!r->has_rtc_timers)
+ return 0;
+
return bd70528_set_rtc_based_timers(r, old_state, NULL);
}
static int bd70528_disable_rtc_based_timers(struct bd70528_rtc *r,
int *old_state)
{
+ if (!r->has_rtc_timers)
+ return 0;
+
return bd70528_set_rtc_based_timers(r, 0, old_state);
}
@@ -213,22 +229,52 @@ static inline void rtc2tm(struct bd70528_rtc_data *r, struct rtc_time *t)
t->tm_wday = bcd2bin(r->week & BD70528_MASK_RTC_WEEK);
}
+static int bd71828_set_alarm(struct device *dev, struct rtc_wkalrm *a)
+{
+ int ret;
+ struct bd71828_rtc_alm alm;
+ struct bd70528_rtc *r = dev_get_drvdata(dev);
+ struct rohm_regmap_dev *parent = r->parent;
+
+ ret = regmap_bulk_read(parent->regmap, BD71828_REG_RTC_ALM_START,
+ &alm, sizeof(alm));
+ if (ret) {
+ dev_err(dev, "Failed to read alarm regs\n");
+ return ret;
+ }
+
+ tm2rtc(&a->time, &alm.alm0);
+
+ if (!a->enabled)
+ alm.alm_mask &= ~BD70528_MASK_ALM_EN;
+ else
+ alm.alm_mask |= BD70528_MASK_ALM_EN;
+
+ ret = regmap_bulk_write(parent->regmap, BD71828_REG_RTC_ALM_START,
+ &alm, sizeof(alm));
+ if (ret)
+ dev_err(dev, "Failed to set alarm time\n");
+
+ return ret;
+
+}
+
static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a)
{
struct bd70528_rtc_wake wake;
struct bd70528_rtc_alm alm;
int ret;
struct bd70528_rtc *r = dev_get_drvdata(dev);
- struct rohm_regmap_dev *bd70528 = r->mfd;
+ struct rohm_regmap_dev *parent = r->parent;
- ret = regmap_bulk_read(bd70528->regmap, BD70528_REG_RTC_WAKE_START,
+ ret = regmap_bulk_read(parent->regmap, BD70528_REG_RTC_WAKE_START,
&wake, sizeof(wake));
if (ret) {
dev_err(dev, "Failed to read wake regs\n");
return ret;
}
- ret = regmap_bulk_read(bd70528->regmap, BD70528_REG_RTC_ALM_START,
+ ret = regmap_bulk_read(parent->regmap, BD70528_REG_RTC_ALM_START,
&alm, sizeof(alm));
if (ret) {
dev_err(dev, "Failed to read alarm regs\n");
@@ -246,14 +292,14 @@ static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a)
wake.ctrl &= ~BD70528_MASK_WAKE_EN;
}
- ret = regmap_bulk_write(bd70528->regmap,
+ ret = regmap_bulk_write(parent->regmap,
BD70528_REG_RTC_WAKE_START, &wake,
sizeof(wake));
if (ret) {
dev_err(dev, "Failed to set wake time\n");
return ret;
}
- ret = regmap_bulk_write(bd70528->regmap, BD70528_REG_RTC_ALM_START,
+ ret = regmap_bulk_write(parent->regmap, BD70528_REG_RTC_ALM_START,
&alm, sizeof(alm));
if (ret)
dev_err(dev, "Failed to set alarm time\n");
@@ -261,14 +307,38 @@ static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a)
return ret;
}
+static int bd71828_read_alarm(struct device *dev, struct rtc_wkalrm *a)
+{
+ int ret;
+ struct bd71828_rtc_alm alm;
+ struct bd70528_rtc *r = dev_get_drvdata(dev);
+ struct rohm_regmap_dev *parent = r->parent;
+
+ ret = regmap_bulk_read(parent->regmap, BD71828_REG_RTC_ALM_START,
+ &alm, sizeof(alm));
+ if (ret) {
+ dev_err(dev, "Failed to read alarm regs\n");
+ return ret;
+ }
+
+ rtc2tm(&alm.alm0, &a->time);
+ a->time.tm_mday = -1;
+ a->time.tm_mon = -1;
+ a->time.tm_year = -1;
+ a->enabled = !!(alm.alm_mask & BD70528_MASK_ALM_EN);
+ a->pending = 0;
+
+ return 0;
+}
+
static int bd70528_read_alarm(struct device *dev, struct rtc_wkalrm *a)
{
struct bd70528_rtc_alm alm;
int ret;
struct bd70528_rtc *r = dev_get_drvdata(dev);
- struct rohm_regmap_dev *bd70528 = r->mfd;
+ struct rohm_regmap_dev *parent = r->parent;
- ret = regmap_bulk_read(bd70528->regmap, BD70528_REG_RTC_ALM_START,
+ ret = regmap_bulk_read(parent->regmap, BD70528_REG_RTC_ALM_START,
&alm, sizeof(alm));
if (ret) {
dev_err(dev, "Failed to read alarm regs\n");
@@ -290,14 +360,14 @@ static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t)
int ret, tmpret, old_states;
struct bd70528_rtc_data rtc_data;
struct bd70528_rtc *r = dev_get_drvdata(dev);
- struct rohm_regmap_dev *bd70528 = r->mfd;
+ struct rohm_regmap_dev *parent = r->parent;
ret = bd70528_disable_rtc_based_timers(r, &old_states);
if (ret)
return ret;
- tmpret = regmap_bulk_read(bd70528->regmap,
- BD70528_REG_RTC_START, &rtc_data,
+ tmpret = regmap_bulk_read(parent->regmap,
+ r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (tmpret) {
dev_err(dev, "Failed to read RTC time registers\n");
@@ -305,8 +375,8 @@ static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t)
}
tm2rtc(t, &rtc_data);
- tmpret = regmap_bulk_write(bd70528->regmap,
- BD70528_REG_RTC_START, &rtc_data,
+ tmpret = regmap_bulk_write(parent->regmap,
+ r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (tmpret) {
dev_err(dev, "Failed to set RTC time\n");
@@ -321,27 +391,32 @@ static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t)
return ret;
}
+static int bd71828_set_time(struct device *dev, struct rtc_time *t)
+{
+ return bd70528_set_time_locked(dev, t);
+}
+
static int bd70528_set_time(struct device *dev, struct rtc_time *t)
{
int ret;
struct bd70528_rtc *r = dev_get_drvdata(dev);
- bd70528_wdt_lock(r->mfd);
+ bd70528_wdt_lock(r->parent);
ret = bd70528_set_time_locked(dev, t);
- bd70528_wdt_unlock(r->mfd);
+ bd70528_wdt_unlock(r->parent);
return ret;
}
static int bd70528_get_time(struct device *dev, struct rtc_time *t)
{
struct bd70528_rtc *r = dev_get_drvdata(dev);
- struct rohm_regmap_dev *bd70528 = r->mfd;
+ struct rohm_regmap_dev *parent = r->parent;
struct bd70528_rtc_data rtc_data;
int ret;
/* read the RTC date and time registers all at once */
- ret = regmap_bulk_read(bd70528->regmap,
- BD70528_REG_RTC_START, &rtc_data,
+ ret = regmap_bulk_read(parent->regmap,
+ r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (ret) {
dev_err(dev, "Failed to read RTC time (err %d)\n", ret);
@@ -362,19 +437,36 @@ static int bd70528_alm_enable(struct device *dev, unsigned int enabled)
if (enabled)
enableval = 0;
- bd70528_wdt_lock(r->mfd);
- ret = bd70528_set_wake(r->mfd, enabled, NULL);
+ bd70528_wdt_lock(r->parent);
+ ret = bd70528_set_wake(r->parent, enabled, NULL);
if (ret) {
dev_err(dev, "Failed to change wake state\n");
goto out_unlock;
}
- ret = regmap_update_bits(r->mfd->regmap, BD70528_REG_RTC_ALM_MASK,
+ ret = regmap_update_bits(r->parent->regmap, BD70528_REG_RTC_ALM_MASK,
BD70528_MASK_ALM_EN, enableval);
if (ret)
dev_err(dev, "Failed to change alarm state\n");
out_unlock:
- bd70528_wdt_unlock(r->mfd);
+ bd70528_wdt_unlock(r->parent);
+ return ret;
+}
+
+static int bd71828_alm_enable(struct device *dev, unsigned int enabled)
+{
+ int ret;
+ struct bd70528_rtc *r = dev_get_drvdata(dev);
+ unsigned int enableval = BD70528_MASK_ALM_EN;
+
+ if (!enabled)
+ enableval = 0;
+
+ ret = regmap_update_bits(r->parent->regmap, BD71828_REG_RTC_ALM0_MASK,
+ BD70528_MASK_ALM_EN, enableval);
+ if (ret)
+ dev_err(dev, "Failed to change alarm state\n");
+
return ret;
}
@@ -386,6 +478,14 @@ static const struct rtc_class_ops bd70528_rtc_ops = {
.alarm_irq_enable = bd70528_alm_enable,
};
+static const struct rtc_class_ops bd71828_rtc_ops = {
+ .read_time = bd70528_get_time,
+ .set_time = bd71828_set_time,
+ .read_alarm = bd71828_read_alarm,
+ .set_alarm = bd71828_set_alarm,
+ .alarm_irq_enable = bd71828_alm_enable,
+};
+
static irqreturn_t alm_hndlr(int irq, void *data)
{
struct rtc_device *rtc = data;
@@ -397,14 +497,19 @@ static irqreturn_t alm_hndlr(int irq, void *data)
static int bd70528_probe(struct platform_device *pdev)
{
struct bd70528_rtc *bd_rtc;
- struct rohm_regmap_dev *mfd;
+ const struct rtc_class_ops *rtc_ops;
+ struct rohm_regmap_dev *parent;
+ const char *irq_name;
int ret;
struct rtc_device *rtc;
int irq;
unsigned int hr;
+ bool enable_main_irq = false;
+ u8 hour_reg;
+ enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
- mfd = dev_get_drvdata(pdev->dev.parent);
- if (!mfd) {
+ parent = dev_get_drvdata(pdev->dev.parent);
+ if (!parent) {
dev_err(&pdev->dev, "No MFD driver data\n");
return -EINVAL;
}
@@ -412,16 +517,39 @@ static int bd70528_probe(struct platform_device *pdev)
if (!bd_rtc)
return -ENOMEM;
- bd_rtc->mfd = mfd;
+ bd_rtc->parent = parent;
bd_rtc->dev = &pdev->dev;
- irq = platform_get_irq_byname(pdev, "bd70528-rtc-alm");
- if (irq < 0)
+ switch (chip) {
+ case ROHM_CHIP_TYPE_BD70528:
+ irq_name = "bd70528-rtc-alm";
+ bd_rtc->has_rtc_timers = true;
+ bd_rtc->reg_time_start = BD70528_REG_RTC_START;
+ hour_reg = BD70528_REG_RTC_HOUR;
+ enable_main_irq = true;
+ rtc_ops = &bd70528_rtc_ops;
+ break;
+ case ROHM_CHIP_TYPE_BD71828:
+ irq_name = "bd71828-rtc-alm-0";
+ bd_rtc->reg_time_start = BD71828_REG_RTC_START;
+ hour_reg = BD71828_REG_RTC_HOUR;
+ rtc_ops = &bd71828_rtc_ops;
+ break;
+ default:
+ dev_err(&pdev->dev, "Unknown chip\n");
+ return -ENOENT;
+ }
+
+ irq = platform_get_irq_byname(pdev, irq_name);
+
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Failed to get irq\n");
return irq;
+ }
platform_set_drvdata(pdev, bd_rtc);
- ret = regmap_read(mfd->regmap, BD70528_REG_RTC_HOUR, &hr);
+ ret = regmap_read(parent->regmap, hour_reg, &hr);
if (ret) {
dev_err(&pdev->dev, "Failed to reag RTC clock\n");
@@ -431,10 +559,10 @@ static int bd70528_probe(struct platform_device *pdev)
if (!(hr & BD70528_MASK_RTC_HOUR_24H)) {
struct rtc_time t;
- ret = bd70528_get_time(&pdev->dev, &t);
+ ret = rtc_ops->read_time(&pdev->dev, &t);
if (!ret)
- ret = bd70528_set_time(&pdev->dev, &t);
+ ret = rtc_ops->set_time(&pdev->dev, &t);
if (ret) {
dev_err(&pdev->dev,
@@ -454,7 +582,7 @@ static int bd70528_probe(struct platform_device *pdev)
rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
rtc->range_max = RTC_TIMESTAMP_END_2099;
- rtc->ops = &bd70528_rtc_ops;
+ rtc->ops = rtc_ops;
/* Request alarm IRQ prior to registerig the RTC */
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, &alm_hndlr,
@@ -468,27 +596,37 @@ static int bd70528_probe(struct platform_device *pdev)
* leave them enabled as irq-controller should disable irqs
* from sub-registers when IRQ is disabled or freed.
*/
- ret = regmap_update_bits(mfd->regmap,
+ if (enable_main_irq) {
+ ret = regmap_update_bits(parent->regmap,
BD70528_REG_INT_MAIN_MASK,
BD70528_INT_RTC_MASK, 0);
- if (ret) {
- dev_err(&pdev->dev, "Failed to enable RTC interrupts\n");
- return ret;
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to enable RTC interrupts\n");
+ return ret;
+ }
}
return rtc_register_device(rtc);
}
+static const struct platform_device_id bd718x7_rtc_id[] = {
+ { "bd70528-rtc", ROHM_CHIP_TYPE_BD70528 },
+ { "bd71828-rtc", ROHM_CHIP_TYPE_BD71828 },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, bd718x7_rtc_id);
+
static struct platform_driver bd70528_rtc = {
.driver = {
.name = "bd70528-rtc"
},
.probe = bd70528_probe,
+ .id_table = bd718x7_rtc_id,
};
module_platform_driver(bd70528_rtc);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
-MODULE_DESCRIPTION("BD70528 RTC driver");
+MODULE_DESCRIPTION("ROHM BD70528 and BD71828 PMIC RTC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bd70528-rtc");
diff --git a/include/linux/mfd/rohm-bd70528.h b/include/linux/mfd/rohm-bd70528.h
index edae6f7afd8e..a57af878fd0c 100644
--- a/include/linux/mfd/rohm-bd70528.h
+++ b/include/linux/mfd/rohm-bd70528.h
@@ -7,6 +7,7 @@
#include <linux/bits.h>
#include <linux/device.h>
#include <linux/mfd/rohm-generic.h>
+#include <linux/mfd/rohm-shared.h>
#include <linux/regmap.h>
enum {
@@ -307,17 +308,6 @@ enum {
/* RTC masks to mask out reserved bits */
-#define BD70528_MASK_RTC_SEC 0x7f
-#define BD70528_MASK_RTC_MINUTE 0x7f
-#define BD70528_MASK_RTC_HOUR_24H 0x80
-#define BD70528_MASK_RTC_HOUR_PM 0x20
-#define BD70528_MASK_RTC_HOUR 0x3f
-#define BD70528_MASK_RTC_DAY 0x3f
-#define BD70528_MASK_RTC_WEEK 0x07
-#define BD70528_MASK_RTC_MONTH 0x1f
-#define BD70528_MASK_RTC_YEAR 0xff
-#define BD70528_MASK_RTC_COUNT_L 0x7f
-
#define BD70528_MASK_ELAPSED_TIMER_EN 0x1
/* Mask second, min and hour fields
* HW would support ALM irq for over 24h
@@ -326,7 +316,6 @@ enum {
* wake-up we limit ALM to 24H and only
* unmask sec, min and hour
*/
-#define BD70528_MASK_ALM_EN 0x7
#define BD70528_MASK_WAKE_EN 0x1
/* WDT masks */
diff --git a/include/linux/mfd/rohm-bd71828.h b/include/linux/mfd/rohm-bd71828.h
index d013e03f742d..017a4c01cb31 100644
--- a/include/linux/mfd/rohm-bd71828.h
+++ b/include/linux/mfd/rohm-bd71828.h
@@ -5,6 +5,7 @@
#define __LINUX_MFD_BD71828_H__
#include <linux/mfd/rohm-generic.h>
+#include <linux/mfd/rohm-shared.h>
/* Regulator IDs */
enum {
@@ -160,6 +161,7 @@ enum {
#define BD71828_REG_RTC_YEAR 0x52
#define BD71828_REG_RTC_ALM0_SEC 0x53
+#define BD71828_REG_RTC_ALM_START BD71828_REG_RTC_ALM0_SEC
#define BD71828_REG_RTC_ALM0_MINUTE 0x54
#define BD71828_REG_RTC_ALM0_HOUR 0x55
#define BD71828_REG_RTC_ALM0_WEEK 0x56
@@ -178,6 +180,7 @@ enum {
#define BD71828_REG_RTC_ALM1_MASK 0x62
#define BD71828_REG_RTC_ALM2 0x63
+#define BD71828_REG_RTC_START BD71828_REG_RTC_SEC
/* Charger/Battey */
#define BD71828_REG_CHG_STATE 0x65
@@ -204,7 +207,6 @@ enum {
#define BD71828_REG_INT_MASK_TEMP 0xdd
#define BD71828_REG_INT_MASK_RTC 0xde
-
#define BD71828_REG_INT_MAIN 0xdf
#define BD71828_REG_INT_BUCK 0xe0
#define BD71828_REG_INT_DCIN1 0xe1
diff --git a/include/linux/mfd/rohm-shared.h b/include/linux/mfd/rohm-shared.h
new file mode 100644
index 000000000000..53dd7f638bfd
--- /dev/null
+++ b/include/linux/mfd/rohm-shared.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2020 ROHM Semiconductors */
+
+
+#ifndef __LINUX_MFD_ROHM_SHARED_H__
+#define __LINUX_MFD_ROHM_SHARED_H__
+
+/* RTC definitions shared between BD70528 and BD71828 */
+
+#define BD70528_MASK_RTC_SEC 0x7f
+#define BD70528_MASK_RTC_MINUTE 0x7f
+#define BD70528_MASK_RTC_HOUR_24H 0x80
+#define BD70528_MASK_RTC_HOUR_PM 0x20
+#define BD70528_MASK_RTC_HOUR 0x3f
+#define BD70528_MASK_RTC_DAY 0x3f
+#define BD70528_MASK_RTC_WEEK 0x07
+#define BD70528_MASK_RTC_MONTH 0x1f
+#define BD70528_MASK_RTC_YEAR 0xff
+#define BD70528_MASK_ALM_EN 0x7
+
+#endif /* __LINUX_MFD_ROHM_SHARED_H__ */
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 09/13] mfd: bd70528: Fix hour register mask
From: Matti Vaittinen @ 2020-01-20 6:40 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
When RTC is used in 24H mode (and it is by this driver) the maximum
hour value is 24 in BCD. This occupies bits [5:0] - which means
correct mask for HOUR register is 0x3f not 0x1f. Fix the mask
Fixes: 32a4a4ebf768 ("rtc: bd70528: Initial support for ROHM bd70528 RTC")
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
No changes since v10
include/linux/mfd/rohm-bd70528.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mfd/rohm-bd70528.h b/include/linux/mfd/rohm-bd70528.h
index 2ad2320d0a96..edae6f7afd8e 100644
--- a/include/linux/mfd/rohm-bd70528.h
+++ b/include/linux/mfd/rohm-bd70528.h
@@ -311,7 +311,7 @@ enum {
#define BD70528_MASK_RTC_MINUTE 0x7f
#define BD70528_MASK_RTC_HOUR_24H 0x80
#define BD70528_MASK_RTC_HOUR_PM 0x20
-#define BD70528_MASK_RTC_HOUR 0x1f
+#define BD70528_MASK_RTC_HOUR 0x3f
#define BD70528_MASK_RTC_DAY 0x3f
#define BD70528_MASK_RTC_WEEK 0x07
#define BD70528_MASK_RTC_MONTH 0x1f
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 08/13] regulator: bd718x7: Split driver to common and bd718x7 specific parts
From: Matti Vaittinen @ 2020-01-20 6:39 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
Few ROHM PMICs allow setting the voltage states for different system states
like RUN, IDLE, SUSPEND and LPSR. States are then changed via SoC specific
mechanisms. bd718x7 driver implemented device-tree parsing functions for
these state specific voltages. The parsing functions can be re-used by
other ROHM chip drivers like bd71828. Split the generic functions from
bd718x7-regulator.c to rohm-regulator.c and export them for other modules
to use.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Mark Brown <broonie@kernel.org>
---
Changes:
Replaced a macro with new enum member.
drivers/regulator/Kconfig | 4 +
drivers/regulator/Makefile | 1 +
drivers/regulator/bd718x7-regulator.c | 183 ++++++++------------------
drivers/regulator/rohm-regulator.c | 95 +++++++++++++
include/linux/mfd/rohm-generic.h | 66 ++++++++++
5 files changed, 221 insertions(+), 128 deletions(-)
create mode 100644 drivers/regulator/rohm-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 74eb5af7295f..a4897ae52f14 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -197,6 +197,7 @@ config REGULATOR_BD70528
config REGULATOR_BD718XX
tristate "ROHM BD71837 Power Regulator"
depends on MFD_ROHM_BD718XX
+ select REGULATOR_ROHM
help
This driver supports voltage regulators on ROHM BD71837 PMIC.
This will enable support for the software controllable buck
@@ -790,6 +791,9 @@ config REGULATOR_RN5T618
Say y here to support the regulators found on Ricoh RN5T567,
RN5T618 or RC5T619 PMIC.
+config REGULATOR_ROHM
+ tristate
+
config REGULATOR_RT5033
tristate "Richtek RT5033 Regulators"
depends on MFD_RT5033
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 2210ba56f9bd..6bcab72c1fc7 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -99,6 +99,7 @@ obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o
obj-$(CONFIG_REGULATOR_RK808) += rk808-regulator.o
obj-$(CONFIG_REGULATOR_RN5T618) += rn5t618-regulator.o
+obj-$(CONFIG_REGULATOR_ROHM) += rohm-regulator.o
obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o
obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o
obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index 6beaf867d9cb..55decb58c777 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -318,6 +318,7 @@ struct reg_init {
};
struct bd718xx_regulator_data {
struct regulator_desc desc;
+ const struct rohm_dvs_config dvs;
const struct reg_init init;
const struct reg_init *additional_inits;
int additional_init_amnt;
@@ -349,133 +350,15 @@ static const struct reg_init bd71837_ldo6_inits[] = {
},
};
-#define NUM_DVS_BUCKS 4
-
-struct of_dvs_setting {
- const char *prop;
- unsigned int reg;
-};
-
-static int set_dvs_levels(const struct of_dvs_setting *dvs,
- struct device_node *np,
- const struct regulator_desc *desc,
- struct regmap *regmap)
-{
- int ret, i;
- unsigned int uv;
-
- ret = of_property_read_u32(np, dvs->prop, &uv);
- if (ret) {
- if (ret != -EINVAL)
- return ret;
- return 0;
- }
-
- for (i = 0; i < desc->n_voltages; i++) {
- ret = regulator_desc_list_voltage_linear_range(desc, i);
- if (ret < 0)
- continue;
- if (ret == uv) {
- i <<= ffs(desc->vsel_mask) - 1;
- ret = regmap_update_bits(regmap, dvs->reg,
- DVS_BUCK_RUN_MASK, i);
- break;
- }
- }
- return ret;
-}
-
-static int buck4_set_hw_dvs_levels(struct device_node *np,
+static int buck_set_hw_dvs_levels(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *cfg)
{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD71837_REG_BUCK4_VOLT_RUN,
- },
- };
+ struct bd718xx_regulator_data *data;
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
-}
-static int buck3_set_hw_dvs_levels(struct device_node *np,
- const struct regulator_desc *desc,
- struct regulator_config *cfg)
-{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD71837_REG_BUCK3_VOLT_RUN,
- },
- };
+ data = container_of(desc, struct bd718xx_regulator_data, desc);
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
-}
-
-static int buck2_set_hw_dvs_levels(struct device_node *np,
- const struct regulator_desc *desc,
- struct regulator_config *cfg)
-{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD718XX_REG_BUCK2_VOLT_RUN,
- },
- {
- .prop = "rohm,dvs-idle-voltage",
- .reg = BD718XX_REG_BUCK2_VOLT_IDLE,
- },
- };
-
-
-
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
-}
-
-static int buck1_set_hw_dvs_levels(struct device_node *np,
- const struct regulator_desc *desc,
- struct regulator_config *cfg)
-{
- int ret, i;
- const struct of_dvs_setting dvs[] = {
- {
- .prop = "rohm,dvs-run-voltage",
- .reg = BD718XX_REG_BUCK1_VOLT_RUN,
- },
- {
- .prop = "rohm,dvs-idle-voltage",
- .reg = BD718XX_REG_BUCK1_VOLT_IDLE,
- },
- {
- .prop = "rohm,dvs-suspend-voltage",
- .reg = BD718XX_REG_BUCK1_VOLT_SUSP,
- },
- };
-
- for (i = 0; i < ARRAY_SIZE(dvs); i++) {
- ret = set_dvs_levels(&dvs[i], np, desc, cfg->regmap);
- if (ret)
- break;
- }
- return ret;
+ return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap);
}
static const struct bd718xx_regulator_data bd71847_regulators[] = {
@@ -496,7 +379,17 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = {
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck1_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+ ROHM_DVS_LEVEL_SUSPEND,
+ .run_reg = BD718XX_REG_BUCK1_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
+ .suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP,
+ .suspend_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK1_CTRL,
@@ -520,7 +413,14 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = {
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck2_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE,
+ .run_reg = BD718XX_REG_BUCK2_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK2_CTRL,
@@ -792,7 +692,17 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck1_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE |
+ ROHM_DVS_LEVEL_SUSPEND,
+ .run_reg = BD718XX_REG_BUCK1_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
+ .suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP,
+ .suspend_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK1_CTRL,
@@ -816,7 +726,14 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck2_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE,
+ .run_reg = BD718XX_REG_BUCK2_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
+ .idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE,
+ .idle_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD718XX_REG_BUCK2_CTRL,
@@ -840,7 +757,12 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD71837_REG_BUCK3_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck3_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN,
+ .run_reg = BD71837_REG_BUCK3_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD71837_REG_BUCK3_CTRL,
@@ -864,7 +786,12 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = {
.enable_reg = BD71837_REG_BUCK4_CTRL,
.enable_mask = BD718XX_BUCK_EN,
.owner = THIS_MODULE,
- .of_parse_cb = buck4_set_hw_dvs_levels,
+ .of_parse_cb = buck_set_hw_dvs_levels,
+ },
+ .dvs = {
+ .level_map = ROHM_DVS_LEVEL_RUN,
+ .run_reg = BD71837_REG_BUCK4_VOLT_RUN,
+ .run_mask = DVS_BUCK_RUN_MASK,
},
.init = {
.reg = BD71837_REG_BUCK4_CTRL,
diff --git a/drivers/regulator/rohm-regulator.c b/drivers/regulator/rohm-regulator.c
new file mode 100644
index 000000000000..399002383b28
--- /dev/null
+++ b/drivers/regulator/rohm-regulator.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2020 ROHM Semiconductors
+
+#include <linux/errno.h>
+#include <linux/mfd/rohm-generic.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+static int set_dvs_level(const struct regulator_desc *desc,
+ struct device_node *np, struct regmap *regmap,
+ char *prop, unsigned int reg, unsigned int mask,
+ unsigned int omask, unsigned int oreg)
+{
+ int ret, i;
+ uint32_t uv;
+
+ ret = of_property_read_u32(np, prop, &uv);
+ if (ret) {
+ if (ret != -EINVAL)
+ return ret;
+ return 0;
+ }
+
+ if (uv == 0) {
+ if (omask)
+ return regmap_update_bits(regmap, oreg, omask, 0);
+ }
+ for (i = 0; i < desc->n_voltages; i++) {
+ ret = regulator_desc_list_voltage_linear_range(desc, i);
+ if (ret < 0)
+ continue;
+ if (ret == uv) {
+ i <<= ffs(desc->vsel_mask) - 1;
+ ret = regmap_update_bits(regmap, reg, mask, i);
+ if (omask && !ret)
+ ret = regmap_update_bits(regmap, oreg, omask,
+ omask);
+ break;
+ }
+ }
+ return ret;
+}
+
+int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
+ struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regmap *regmap)
+{
+ int i, ret = 0;
+ char *prop;
+ unsigned int reg, mask, omask, oreg = desc->enable_reg;
+
+ for (i = 0; i < ROHM_DVS_LEVEL_MAX && !ret; i++) {
+ if (dvs->level_map & (1 << i)) {
+ switch (i + 1) {
+ case ROHM_DVS_LEVEL_RUN:
+ prop = "rohm,dvs-run-voltage";
+ reg = dvs->run_reg;
+ mask = dvs->run_mask;
+ omask = dvs->run_on_mask;
+ break;
+ case ROHM_DVS_LEVEL_IDLE:
+ prop = "rohm,dvs-idle-voltage";
+ reg = dvs->idle_reg;
+ mask = dvs->idle_mask;
+ omask = dvs->idle_on_mask;
+ break;
+ case ROHM_DVS_LEVEL_SUSPEND:
+ prop = "rohm,dvs-suspend-voltage";
+ reg = dvs->suspend_reg;
+ mask = dvs->suspend_mask;
+ omask = dvs->suspend_on_mask;
+ break;
+ case ROHM_DVS_LEVEL_LPSR:
+ prop = "rohm,dvs-lpsr-voltage";
+ reg = dvs->lpsr_reg;
+ mask = dvs->lpsr_mask;
+ omask = dvs->lpsr_on_mask;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ret = set_dvs_level(desc, np, regmap, prop, reg, mask,
+ omask, oreg);
+ }
+ }
+ return ret;
+}
+EXPORT_SYMBOL(rohm_regulator_set_dvs_levels);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
+MODULE_DESCRIPTION("Generic helpers for ROHM PMIC regulator drivers");
diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h
index ff3dd7578fd3..4283b5b33e04 100644
--- a/include/linux/mfd/rohm-generic.h
+++ b/include/linux/mfd/rohm-generic.h
@@ -4,6 +4,9 @@
#ifndef __LINUX_MFD_ROHM_H__
#define __LINUX_MFD_ROHM_H__
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
enum rohm_chip_type {
ROHM_CHIP_TYPE_BD71837 = 0,
ROHM_CHIP_TYPE_BD71847,
@@ -17,4 +20,67 @@ struct rohm_regmap_dev {
struct regmap *regmap;
};
+enum {
+ ROHM_DVS_LEVEL_UNKNOWN,
+ ROHM_DVS_LEVEL_RUN,
+ ROHM_DVS_LEVEL_IDLE,
+ ROHM_DVS_LEVEL_SUSPEND,
+ ROHM_DVS_LEVEL_LPSR,
+ ROHM_DVS_LEVEL_MAX = ROHM_DVS_LEVEL_LPSR,
+};
+
+/**
+ * struct rohm_dvs_config - dynamic voltage scaling register descriptions
+ *
+ * @level_map: bitmap representing supported run-levels for this
+ * regulator
+ * @run_reg: register address for regulator config at 'run' state
+ * @run_mask: value mask for regulator voltages at 'run' state
+ * @run_on_mask: enable mask for regulator at 'run' state
+ * @idle_reg: register address for regulator config at 'idle' state
+ * @idle_mask: value mask for regulator voltages at 'idle' state
+ * @idle_on_mask: enable mask for regulator at 'idle' state
+ * @suspend_reg: register address for regulator config at 'suspend' state
+ * @suspend_mask: value mask for regulator voltages at 'suspend' state
+ * @suspend_on_mask: enable mask for regulator at 'suspend' state
+ * @lpsr_reg: register address for regulator config at 'lpsr' state
+ * @lpsr_mask: value mask for regulator voltages at 'lpsr' state
+ * @lpsr_on_mask: enable mask for regulator at 'lpsr' state
+ *
+ * Description of ROHM PMICs voltage configuration registers for different
+ * system states. This is used to correctly configure the PMIC at startup
+ * based on values read from DT.
+ */
+struct rohm_dvs_config {
+ uint64_t level_map;
+ unsigned int run_reg;
+ unsigned int run_mask;
+ unsigned int run_on_mask;
+ unsigned int idle_reg;
+ unsigned int idle_mask;
+ unsigned int idle_on_mask;
+ unsigned int suspend_reg;
+ unsigned int suspend_mask;
+ unsigned int suspend_on_mask;
+ unsigned int lpsr_reg;
+ unsigned int lpsr_mask;
+ unsigned int lpsr_on_mask;
+};
+
+#if IS_ENABLED(CONFIG_REGULATOR_ROHM)
+int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
+ struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regmap *regmap);
+
+#else
+static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
+ struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regmap *regmap)
+{
+ return 0;
+}
+#endif
+
#endif
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 07/13] clk: bd718x7: Support ROHM BD71828 clk block
From: Matti Vaittinen @ 2020-01-20 6:37 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
BD71828GW is a single-chip power management IC for battery-powered portable
devices. Add support for controlling BD71828 clk using bd718x7 driver.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
---
No changes since v10
drivers/clk/Kconfig | 6 ++---
drivers/clk/clk-bd718x7.c | 38 +++++++++++++++++++++++---------
include/linux/mfd/rohm-bd70528.h | 6 -----
include/linux/mfd/rohm-bd71828.h | 4 ----
include/linux/mfd/rohm-bd718x7.h | 6 -----
5 files changed, 31 insertions(+), 29 deletions(-)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 45653a0e6ecd..ac5981ce2477 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -305,10 +305,10 @@ config COMMON_CLK_MMP2
Support for Marvell MMP2 and MMP3 SoC clocks
config COMMON_CLK_BD718XX
- tristate "Clock driver for ROHM BD718x7 PMIC"
- depends on MFD_ROHM_BD718XX || MFD_ROHM_BD70528
+ tristate "Clock driver for 32K clk gates on ROHM PMICs"
+ depends on MFD_ROHM_BD718XX || MFD_ROHM_BD70528 || MFD_ROHM_BD71828
help
- This driver supports ROHM BD71837, ROHM BD71847 and
+ This driver supports ROHM BD71837, ROHM BD71847, ROHM BD71828 and
ROHM BD70528 PMICs clock gates.
config COMMON_CLK_FIXED_MMIO
diff --git a/drivers/clk/clk-bd718x7.c b/drivers/clk/clk-bd718x7.c
index 33699ee1bdf3..b52e8d6f660c 100644
--- a/drivers/clk/clk-bd718x7.c
+++ b/drivers/clk/clk-bd718x7.c
@@ -7,12 +7,25 @@
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
-#include <linux/mfd/rohm-bd718x7.h>
-#include <linux/mfd/rohm-bd70528.h>
+#include <linux/mfd/rohm-generic.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/regmap.h>
+/* clk control registers */
+/* BD70528 */
+#define BD70528_REG_OUT32K 0x2c
+/* BD71828 */
+#define BD71828_REG_OUT32K 0x4B
+/* BD71837 and BD71847 */
+#define BD718XX_REG_OUT32K 0x2E
+
+/*
+ * BD71837, BD71847, BD70528 and BD71828 all use bit [0] to clk output control
+ */
+#define CLK_OUT_EN_MASK BIT(0)
+
+
struct bd718xx_clk {
struct clk_hw hw;
u8 reg;
@@ -21,10 +34,8 @@ struct bd718xx_clk {
struct rohm_regmap_dev *mfd;
};
-static int bd71837_clk_set(struct clk_hw *hw, int status)
+static int bd71837_clk_set(struct bd718xx_clk *c, unsigned int status)
{
- struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
-
return regmap_update_bits(c->mfd->regmap, c->reg, c->mask, status);
}
@@ -33,14 +44,16 @@ static void bd71837_clk_disable(struct clk_hw *hw)
int rv;
struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
- rv = bd71837_clk_set(hw, 0);
+ rv = bd71837_clk_set(c, 0);
if (rv)
dev_dbg(&c->pdev->dev, "Failed to disable 32K clk (%d)\n", rv);
}
static int bd71837_clk_enable(struct clk_hw *hw)
{
- return bd71837_clk_set(hw, 1);
+ struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
+
+ return bd71837_clk_set(c, 0xffffffff);
}
static int bd71837_clk_is_enabled(struct clk_hw *hw)
@@ -92,11 +105,15 @@ static int bd71837_clk_probe(struct platform_device *pdev)
case ROHM_CHIP_TYPE_BD71837:
case ROHM_CHIP_TYPE_BD71847:
c->reg = BD718XX_REG_OUT32K;
- c->mask = BD718XX_OUT32K_EN;
+ c->mask = CLK_OUT_EN_MASK;
+ break;
+ case ROHM_CHIP_TYPE_BD71828:
+ c->reg = BD71828_REG_OUT32K;
+ c->mask = CLK_OUT_EN_MASK;
break;
case ROHM_CHIP_TYPE_BD70528:
- c->reg = BD70528_REG_CLK_OUT;
- c->mask = BD70528_CLK_OUT_EN_MASK;
+ c->reg = BD70528_REG_OUT32K;
+ c->mask = CLK_OUT_EN_MASK;
break;
default:
dev_err(&pdev->dev, "Unknown clk chip\n");
@@ -126,6 +143,7 @@ static const struct platform_device_id bd718x7_clk_id[] = {
{ "bd71837-clk", ROHM_CHIP_TYPE_BD71837 },
{ "bd71847-clk", ROHM_CHIP_TYPE_BD71847 },
{ "bd70528-clk", ROHM_CHIP_TYPE_BD70528 },
+ { "bd71828-clk", ROHM_CHIP_TYPE_BD71828 },
{ },
};
MODULE_DEVICE_TABLE(platform, bd718x7_clk_id);
diff --git a/include/linux/mfd/rohm-bd70528.h b/include/linux/mfd/rohm-bd70528.h
index 1013e60c5b25..2ad2320d0a96 100644
--- a/include/linux/mfd/rohm-bd70528.h
+++ b/include/linux/mfd/rohm-bd70528.h
@@ -89,10 +89,6 @@ struct bd70528_data {
#define BD70528_REG_GPIO3_OUT 0x52
#define BD70528_REG_GPIO4_OUT 0x54
-/* clk control */
-
-#define BD70528_REG_CLK_OUT 0x2c
-
/* RTC */
#define BD70528_REG_RTC_COUNT_H 0x2d
@@ -309,8 +305,6 @@ enum {
#define BD70528_GPIO_IN_STATE_BASE 1
-#define BD70528_CLK_OUT_EN_MASK 0x1
-
/* RTC masks to mask out reserved bits */
#define BD70528_MASK_RTC_SEC 0x7f
diff --git a/include/linux/mfd/rohm-bd71828.h b/include/linux/mfd/rohm-bd71828.h
index eb0557eb5314..d013e03f742d 100644
--- a/include/linux/mfd/rohm-bd71828.h
+++ b/include/linux/mfd/rohm-bd71828.h
@@ -183,9 +183,6 @@ enum {
#define BD71828_REG_CHG_STATE 0x65
#define BD71828_REG_CHG_FULL 0xd2
-/* CLK */
-#define BD71828_REG_OUT32K 0x4B
-
/* LEDs */
#define BD71828_REG_LED_CTRL 0x4A
#define BD71828_MASK_LED_AMBER 0x80
@@ -417,7 +414,6 @@ enum {
#define BD71828_INT_RTC1_MASK 0x2
#define BD71828_INT_RTC2_MASK 0x4
-#define BD71828_OUT32K_EN 0x1
#define BD71828_OUT_TYPE_MASK 0x2
#define BD71828_OUT_TYPE_OPEN_DRAIN 0x0
#define BD71828_OUT_TYPE_CMOS 0x2
diff --git a/include/linux/mfd/rohm-bd718x7.h b/include/linux/mfd/rohm-bd718x7.h
index 7f2dbde402a1..bee2474a8f9f 100644
--- a/include/linux/mfd/rohm-bd718x7.h
+++ b/include/linux/mfd/rohm-bd718x7.h
@@ -191,12 +191,6 @@ enum {
#define IRQ_ON_REQ 0x02
#define IRQ_STBY_REQ 0x01
-/* BD718XX_REG_OUT32K bits */
-#define BD718XX_OUT32K_EN 0x01
-
-/* BD7183XX gated clock rate */
-#define BD718XX_CLK_RATE 32768
-
/* ROHM BD718XX irqs */
enum {
BD718XX_INT_STBY_REQ,
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 06/13] mfd: input: bd71828: Add power-key support
From: Matti Vaittinen @ 2020-01-20 6:36 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
Use gpio_keys to send power input-event to user-space when power
button (short) press is detected.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
No changes since v10
drivers/mfd/rohm-bd71828.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
index 0ec386c9f26b..210261d026f2 100644
--- a/drivers/mfd/rohm-bd71828.c
+++ b/drivers/mfd/rohm-bd71828.c
@@ -4,7 +4,9 @@
//
// ROHM BD71828 PMIC driver
+#include <linux/gpio_keys.h>
#include <linux/i2c.h>
+#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/irq.h>
@@ -15,6 +17,18 @@
#include <linux/regmap.h>
#include <linux/types.h>
+static struct gpio_keys_button button = {
+ .code = KEY_POWER,
+ .gpio = -1,
+ .type = EV_KEY,
+};
+
+static struct gpio_keys_platform_data bd71828_powerkey_data = {
+ .buttons = &button,
+ .nbuttons = 1,
+ .name = "bd71828-pwrkey",
+};
+
static const struct resource rtc_irqs[] = {
DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
@@ -35,6 +49,10 @@ static struct mfd_cell bd71828_mfd_cells[] = {
.name = "bd71828-rtc",
.resources = rtc_irqs,
.num_resources = ARRAY_SIZE(rtc_irqs),
+ }, {
+ .name = "gpio-keys",
+ .platform_data = &bd71828_powerkey_data,
+ .pdata_size = sizeof(bd71828_powerkey_data),
},
};
@@ -288,6 +306,14 @@ static int bd71828_i2c_probe(struct i2c_client *i2c)
dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
bd71828_irq_chip.num_irqs);
+ ret = regmap_irq_get_virq(irq_data, BD71828_INT_SHORTPUSH);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
+ return ret;
+ }
+
+ button.irq = ret;
+
ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
bd71828_mfd_cells,
ARRAY_SIZE(bd71828_mfd_cells), NULL, 0,
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 05/13] mfd: bd71828: Support ROHM BD71828 PMIC - core
From: Matti Vaittinen @ 2020-01-20 6:36 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
BD71828GW is a single-chip power management IC for battery-powered portable
devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA
single-cell linear charger. Also included is a Coulomb counter, a real-time
clock (RTC), 3 GPO/regulator control pins, HALL input and a 32.768 kHz
clock gate.
Add MFD core driver providing interrupt controller facilities and i2c
access to sub device drivers.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
No changes since v10
drivers/mfd/Kconfig | 15 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/rohm-bd71828.c | 318 +++++++++++++++++++++++
include/linux/mfd/rohm-bd71828.h | 425 +++++++++++++++++++++++++++++++
include/linux/mfd/rohm-generic.h | 1 +
5 files changed, 760 insertions(+)
create mode 100644 drivers/mfd/rohm-bd71828.c
create mode 100644 include/linux/mfd/rohm-bd71828.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 420900852166..c3c9432ef51c 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1906,6 +1906,21 @@ config MFD_ROHM_BD70528
10 bits SAR ADC for battery temperature monitor and 1S battery
charger.
+config MFD_ROHM_BD71828
+ tristate "ROHM BD71828 Power Management IC"
+ depends on I2C=y
+ depends on OF
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ select MFD_CORE
+ help
+ Select this option to get support for the ROHM BD71828 Power
+ Management IC. BD71828GW is a single-chip power management IC for
+ battery-powered portable devices. The IC integrates 7 buck
+ converters, 7 LDOs, and a 1500 mA single-cell linear charger.
+ Also included is a Coulomb counter, a real-time clock (RTC), and
+ a 32.768 kHz clock gate.
+
config MFD_STM32_LPTIMER
tristate "Support for STM32 Low-Power Timer"
depends on (ARCH_STM32 && OF) || COMPILE_TEST
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index aed99f08739f..61b3093af39d 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -252,6 +252,7 @@ obj-$(CONFIG_MFD_MXS_LRADC) += mxs-lradc.o
obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc27xx-spi.o
obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-bd70528.o
+obj-$(CONFIG_MFD_ROHM_BD71828) += rohm-bd71828.o
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
obj-$(CONFIG_MFD_STMFX) += stmfx.o
diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
new file mode 100644
index 000000000000..0ec386c9f26b
--- /dev/null
+++ b/drivers/mfd/rohm-bd71828.c
@@ -0,0 +1,318 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (C) 2019 ROHM Semiconductors
+//
+// ROHM BD71828 PMIC driver
+
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/irq.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/rohm-bd71828.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+static const struct resource rtc_irqs[] = {
+ DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
+ DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
+ DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC2, "bd71828-rtc-alm-2"),
+};
+
+static struct mfd_cell bd71828_mfd_cells[] = {
+ { .name = "bd71828-pmic", },
+ { .name = "bd71828-gpio", },
+ { .name = "bd71828-led", .of_compatible = "rohm,bd71828-leds" },
+ /*
+ * We use BD71837 driver to drive the clock block. Only differences to
+ * BD70528 clock gate are the register address and mask.
+ */
+ { .name = "bd71828-clk", },
+ { .name = "bd71827-power", },
+ {
+ .name = "bd71828-rtc",
+ .resources = rtc_irqs,
+ .num_resources = ARRAY_SIZE(rtc_irqs),
+ },
+};
+
+static const struct regmap_range volatile_ranges[] = {
+ {
+ .range_min = BD71828_REG_PS_CTRL_1,
+ .range_max = BD71828_REG_PS_CTRL_1,
+ }, {
+ .range_min = BD71828_REG_PS_CTRL_3,
+ .range_max = BD71828_REG_PS_CTRL_3,
+ }, {
+ .range_min = BD71828_REG_RTC_SEC,
+ .range_max = BD71828_REG_RTC_YEAR,
+ }, {
+ /*
+ * For now make all charger registers volatile because many
+ * needs to be and because the charger block is not that
+ * performance critical.
+ */
+ .range_min = BD71828_REG_CHG_STATE,
+ .range_max = BD71828_REG_CHG_FULL,
+ }, {
+ .range_min = BD71828_REG_INT_MAIN,
+ .range_max = BD71828_REG_IO_STAT,
+ },
+};
+
+static const struct regmap_access_table volatile_regs = {
+ .yes_ranges = &volatile_ranges[0],
+ .n_yes_ranges = ARRAY_SIZE(volatile_ranges),
+};
+
+static struct regmap_config bd71828_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .volatile_table = &volatile_regs,
+ .max_register = BD71828_MAX_REGISTER,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+/*
+ * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
+ * access corect sub-IRQ registers based on bits that are set in main IRQ
+ * register.
+ */
+
+static unsigned int bit0_offsets[] = {11}; /* RTC IRQ */
+static unsigned int bit1_offsets[] = {10}; /* TEMP IRQ */
+static unsigned int bit2_offsets[] = {6, 7, 8, 9}; /* BAT MON IRQ */
+static unsigned int bit3_offsets[] = {5}; /* BAT IRQ */
+static unsigned int bit4_offsets[] = {4}; /* CHG IRQ */
+static unsigned int bit5_offsets[] = {3}; /* VSYS IRQ */
+static unsigned int bit6_offsets[] = {1, 2}; /* DCIN IRQ */
+static unsigned int bit7_offsets[] = {0}; /* BUCK IRQ */
+
+static struct regmap_irq_sub_irq_map bd71828_sub_irq_offsets[] = {
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),
+ REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
+};
+
+static struct regmap_irq bd71828_irqs[] = {
+ REGMAP_IRQ_REG(BD71828_INT_BUCK1_OCP, 0, BD71828_INT_BUCK1_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BUCK2_OCP, 0, BD71828_INT_BUCK2_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BUCK3_OCP, 0, BD71828_INT_BUCK3_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BUCK4_OCP, 0, BD71828_INT_BUCK4_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BUCK5_OCP, 0, BD71828_INT_BUCK5_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BUCK6_OCP, 0, BD71828_INT_BUCK6_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BUCK7_OCP, 0, BD71828_INT_BUCK7_OCP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_PGFAULT, 0, BD71828_INT_PGFAULT_MASK),
+ /* DCIN1 interrupts */
+ REGMAP_IRQ_REG(BD71828_INT_DCIN_DET, 1, BD71828_INT_DCIN_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_DCIN_RMV, 1, BD71828_INT_DCIN_RMV_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CLPS_OUT, 1, BD71828_INT_CLPS_OUT_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CLPS_IN, 1, BD71828_INT_CLPS_IN_MASK),
+ /* DCIN2 interrupts */
+ REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_RES, 2,
+ BD71828_INT_DCIN_MON_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_DET, 2,
+ BD71828_INT_DCIN_MON_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_LONGPUSH, 2, BD71828_INT_LONGPUSH_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_MIDPUSH, 2, BD71828_INT_MIDPUSH_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_SHORTPUSH, 2, BD71828_INT_SHORTPUSH_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_PUSH, 2, BD71828_INT_PUSH_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_WDOG, 2, BD71828_INT_WDOG_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_SWRESET, 2, BD71828_INT_SWRESET_MASK),
+ /* Vsys */
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_RES, 3,
+ BD71828_INT_VSYS_UV_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_DET, 3,
+ BD71828_INT_VSYS_UV_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_RES, 3,
+ BD71828_INT_VSYS_LOW_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_DET, 3,
+ BD71828_INT_VSYS_LOW_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_IN, 3,
+ BD71828_INT_VSYS_HALL_IN_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_TOGGLE, 3,
+ BD71828_INT_VSYS_HALL_TOGGLE_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_RES, 3,
+ BD71828_INT_VSYS_MON_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_DET, 3,
+ BD71828_INT_VSYS_MON_DET_MASK),
+ /* Charger */
+ REGMAP_IRQ_REG(BD71828_INT_CHG_DCIN_ILIM, 4,
+ BD71828_INT_CHG_DCIN_ILIM_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_TOPOFF_TO_DONE, 4,
+ BD71828_INT_CHG_TOPOFF_TO_DONE_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TEMP, 4,
+ BD71828_INT_CHG_WDG_TEMP_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TIME, 4,
+ BD71828_INT_CHG_WDG_TIME_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_RES, 4,
+ BD71828_INT_CHG_RECHARGE_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_DET, 4,
+ BD71828_INT_CHG_RECHARGE_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_RANGED_TEMP_TRANSITION, 4,
+ BD71828_INT_CHG_RANGED_TEMP_TRANSITION_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_CHG_STATE_TRANSITION, 4,
+ BD71828_INT_CHG_STATE_TRANSITION_MASK),
+ /* Battery */
+ REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_NORMAL, 5,
+ BD71828_INT_BAT_TEMP_NORMAL_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_ERANGE, 5,
+ BD71828_INT_BAT_TEMP_ERANGE_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_WARN, 5,
+ BD71828_INT_BAT_TEMP_WARN_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_REMOVED, 5,
+ BD71828_INT_BAT_REMOVED_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_DETECTED, 5,
+ BD71828_INT_BAT_DETECTED_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_THERM_REMOVED, 5,
+ BD71828_INT_THERM_REMOVED_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_THERM_DETECTED, 5,
+ BD71828_INT_THERM_DETECTED_MASK),
+ /* Battery Mon 1 */
+ REGMAP_IRQ_REG(BD71828_INT_BAT_DEAD, 6, BD71828_INT_BAT_DEAD_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_RES, 6,
+ BD71828_INT_BAT_SHORTC_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_DET, 6,
+ BD71828_INT_BAT_SHORTC_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_RES, 6,
+ BD71828_INT_BAT_LOW_VOLT_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_DET, 6,
+ BD71828_INT_BAT_LOW_VOLT_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_RES, 6,
+ BD71828_INT_BAT_OVER_VOLT_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_DET, 6,
+ BD71828_INT_BAT_OVER_VOLT_DET_MASK),
+ /* Battery Mon 2 */
+ REGMAP_IRQ_REG(BD71828_INT_BAT_MON_RES, 7,
+ BD71828_INT_BAT_MON_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_MON_DET, 7,
+ BD71828_INT_BAT_MON_DET_MASK),
+ /* Battery Mon 3 (Coulomb counter) */
+ REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON1, 8,
+ BD71828_INT_BAT_CC_MON1_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON2, 8,
+ BD71828_INT_BAT_CC_MON2_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON3, 8,
+ BD71828_INT_BAT_CC_MON3_MASK),
+ /* Battery Mon 4 */
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_RES, 9,
+ BD71828_INT_BAT_OVER_CURR_1_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_DET, 9,
+ BD71828_INT_BAT_OVER_CURR_1_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_RES, 9,
+ BD71828_INT_BAT_OVER_CURR_2_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_DET, 9,
+ BD71828_INT_BAT_OVER_CURR_2_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_RES, 9,
+ BD71828_INT_BAT_OVER_CURR_3_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_DET, 9,
+ BD71828_INT_BAT_OVER_CURR_3_DET_MASK),
+ /* Temperature */
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_RES, 10,
+ BD71828_INT_TEMP_BAT_LOW_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_DET, 10,
+ BD71828_INT_TEMP_BAT_LOW_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_RES, 10,
+ BD71828_INT_TEMP_BAT_HI_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_DET, 10,
+ BD71828_INT_TEMP_BAT_HI_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_RES, 10,
+ BD71828_INT_TEMP_CHIP_OVER_125_RES_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_DET, 10,
+ BD71828_INT_TEMP_CHIP_OVER_125_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_VF_DET, 10,
+ BD71828_INT_TEMP_CHIP_OVER_VF_DET_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_VF_RES, 10,
+ BD71828_INT_TEMP_CHIP_OVER_VF_RES_MASK),
+ /* RTC Alarm */
+ REGMAP_IRQ_REG(BD71828_INT_RTC0, 11, BD71828_INT_RTC0_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_RTC1, 11, BD71828_INT_RTC1_MASK),
+ REGMAP_IRQ_REG(BD71828_INT_RTC2, 11, BD71828_INT_RTC2_MASK),
+};
+
+static struct regmap_irq_chip bd71828_irq_chip = {
+ .name = "bd71828_irq",
+ .main_status = BD71828_REG_INT_MAIN,
+ .irqs = &bd71828_irqs[0],
+ .num_irqs = ARRAY_SIZE(bd71828_irqs),
+ .status_base = BD71828_REG_INT_BUCK,
+ .mask_base = BD71828_REG_INT_MASK_BUCK,
+ .ack_base = BD71828_REG_INT_BUCK,
+ .mask_invert = true,
+ .init_ack_masked = true,
+ .num_regs = 12,
+ .num_main_regs = 1,
+ .sub_reg_offsets = &bd71828_sub_irq_offsets[0],
+ .num_main_status_bits = 8,
+ .irq_reg_stride = 1,
+};
+
+static int bd71828_i2c_probe(struct i2c_client *i2c)
+{
+ struct rohm_regmap_dev *chip;
+ struct regmap_irq_chip_data *irq_data;
+ int ret;
+
+ if (!i2c->irq) {
+ dev_err(&i2c->dev, "No IRQ configured\n");
+ return -EINVAL;
+ }
+
+ chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ dev_set_drvdata(&i2c->dev, chip);
+
+ chip->regmap = devm_regmap_init_i2c(i2c, &bd71828_regmap);
+ if (IS_ERR(chip->regmap)) {
+ dev_err(&i2c->dev, "Failed to initialize Regmap\n");
+ return PTR_ERR(chip->regmap);
+ }
+
+ ret = devm_regmap_add_irq_chip(&i2c->dev, chip->regmap,
+ i2c->irq, IRQF_ONESHOT, 0,
+ &bd71828_irq_chip, &irq_data);
+ if (ret) {
+ dev_err(&i2c->dev, "Failed to add IRQ chip\n");
+ return ret;
+ }
+
+ dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
+ bd71828_irq_chip.num_irqs);
+
+ ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
+ bd71828_mfd_cells,
+ ARRAY_SIZE(bd71828_mfd_cells), NULL, 0,
+ regmap_irq_get_domain(irq_data));
+ if (ret)
+ dev_err(&i2c->dev, "Failed to create subdevices\n");
+
+ return ret;
+}
+
+static const struct of_device_id bd71828_of_match[] = {
+ { .compatible = "rohm,bd71828", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bd71828_of_match);
+
+static struct i2c_driver bd71828_drv = {
+ .driver = {
+ .name = "rohm-bd71828",
+ .of_match_table = bd71828_of_match,
+ },
+ .probe_new = &bd71828_i2c_probe,
+};
+module_i2c_driver(bd71828_drv);
+
+MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
+MODULE_DESCRIPTION("ROHM BD71828 Power Management IC driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/rohm-bd71828.h b/include/linux/mfd/rohm-bd71828.h
new file mode 100644
index 000000000000..eb0557eb5314
--- /dev/null
+++ b/include/linux/mfd/rohm-bd71828.h
@@ -0,0 +1,425 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2019 ROHM Semiconductors */
+
+#ifndef __LINUX_MFD_BD71828_H__
+#define __LINUX_MFD_BD71828_H__
+
+#include <linux/mfd/rohm-generic.h>
+
+/* Regulator IDs */
+enum {
+ BD71828_BUCK1,
+ BD71828_BUCK2,
+ BD71828_BUCK3,
+ BD71828_BUCK4,
+ BD71828_BUCK5,
+ BD71828_BUCK6,
+ BD71828_BUCK7,
+ BD71828_LDO1,
+ BD71828_LDO2,
+ BD71828_LDO3,
+ BD71828_LDO4,
+ BD71828_LDO5,
+ BD71828_LDO6,
+ BD71828_LDO_SNVS,
+ BD71828_REGULATOR_AMOUNT,
+};
+
+#define BD71828_BUCK1267_VOLTS 0xEF
+#define BD71828_BUCK3_VOLTS 0x10
+#define BD71828_BUCK4_VOLTS 0x20
+#define BD71828_BUCK5_VOLTS 0x10
+#define BD71828_LDO_VOLTS 0x32
+/* LDO6 is fixed 1.8V voltage */
+#define BD71828_LDO_6_VOLTAGE 1800000
+
+/* Registers and masks*/
+
+/* MODE control */
+#define BD71828_REG_PS_CTRL_1 0x04
+#define BD71828_REG_PS_CTRL_2 0x05
+#define BD71828_REG_PS_CTRL_3 0x06
+
+//#define BD71828_REG_SWRESET 0x06
+#define BD71828_MASK_RUN_LVL_CTRL 0x30
+
+/* Regulator control masks */
+
+#define BD71828_MASK_RAMP_DELAY 0x6
+
+#define BD71828_MASK_RUN_EN 0x08
+#define BD71828_MASK_SUSP_EN 0x04
+#define BD71828_MASK_IDLE_EN 0x02
+#define BD71828_MASK_LPSR_EN 0x01
+
+#define BD71828_MASK_RUN0_EN 0x01
+#define BD71828_MASK_RUN1_EN 0x02
+#define BD71828_MASK_RUN2_EN 0x04
+#define BD71828_MASK_RUN3_EN 0x08
+
+#define BD71828_MASK_DVS_BUCK1_CTRL 0x10
+#define BD71828_DVS_BUCK1_CTRL_I2C 0
+#define BD71828_DVS_BUCK1_USE_RUNLVL 0x10
+
+#define BD71828_MASK_DVS_BUCK2_CTRL 0x20
+#define BD71828_DVS_BUCK2_CTRL_I2C 0
+#define BD71828_DVS_BUCK2_USE_RUNLVL 0x20
+
+#define BD71828_MASK_DVS_BUCK6_CTRL 0x40
+#define BD71828_DVS_BUCK6_CTRL_I2C 0
+#define BD71828_DVS_BUCK6_USE_RUNLVL 0x40
+
+#define BD71828_MASK_DVS_BUCK7_CTRL 0x80
+#define BD71828_DVS_BUCK7_CTRL_I2C 0
+#define BD71828_DVS_BUCK7_USE_RUNLVL 0x80
+
+#define BD71828_MASK_BUCK1267_VOLT 0xff
+#define BD71828_MASK_BUCK3_VOLT 0x1f
+#define BD71828_MASK_BUCK4_VOLT 0x3f
+#define BD71828_MASK_BUCK5_VOLT 0x1f
+#define BD71828_MASK_LDO_VOLT 0x3f
+
+/* Regulator control regs */
+#define BD71828_REG_BUCK1_EN 0x08
+#define BD71828_REG_BUCK1_CTRL 0x09
+#define BD71828_REG_BUCK1_MODE 0x0a
+#define BD71828_REG_BUCK1_IDLE_VOLT 0x0b
+#define BD71828_REG_BUCK1_SUSP_VOLT 0x0c
+#define BD71828_REG_BUCK1_VOLT 0x0d
+
+#define BD71828_REG_BUCK2_EN 0x12
+#define BD71828_REG_BUCK2_CTRL 0x13
+#define BD71828_REG_BUCK2_MODE 0x14
+#define BD71828_REG_BUCK2_IDLE_VOLT 0x15
+#define BD71828_REG_BUCK2_SUSP_VOLT 0x16
+#define BD71828_REG_BUCK2_VOLT 0x17
+
+#define BD71828_REG_BUCK3_EN 0x1c
+#define BD71828_REG_BUCK3_MODE 0x1d
+#define BD71828_REG_BUCK3_VOLT 0x1e
+
+#define BD71828_REG_BUCK4_EN 0x1f
+#define BD71828_REG_BUCK4_MODE 0x20
+#define BD71828_REG_BUCK4_VOLT 0x21
+
+#define BD71828_REG_BUCK5_EN 0x22
+#define BD71828_REG_BUCK5_MODE 0x23
+#define BD71828_REG_BUCK5_VOLT 0x24
+
+#define BD71828_REG_BUCK6_EN 0x25
+#define BD71828_REG_BUCK6_CTRL 0x26
+#define BD71828_REG_BUCK6_MODE 0x27
+#define BD71828_REG_BUCK6_IDLE_VOLT 0x28
+#define BD71828_REG_BUCK6_SUSP_VOLT 0x29
+#define BD71828_REG_BUCK6_VOLT 0x2a
+
+#define BD71828_REG_BUCK7_EN 0x2f
+#define BD71828_REG_BUCK7_CTRL 0x30
+#define BD71828_REG_BUCK7_MODE 0x31
+#define BD71828_REG_BUCK7_IDLE_VOLT 0x32
+#define BD71828_REG_BUCK7_SUSP_VOLT 0x33
+#define BD71828_REG_BUCK7_VOLT 0x34
+
+#define BD71828_REG_LDO1_EN 0x39
+#define BD71828_REG_LDO1_VOLT 0x3a
+#define BD71828_REG_LDO2_EN 0x3b
+#define BD71828_REG_LDO2_VOLT 0x3c
+#define BD71828_REG_LDO3_EN 0x3d
+#define BD71828_REG_LDO3_VOLT 0x3e
+#define BD71828_REG_LDO4_EN 0x3f
+#define BD71828_REG_LDO4_VOLT 0x40
+#define BD71828_REG_LDO5_EN 0x41
+#define BD71828_REG_LDO5_VOLT 0x43
+#define BD71828_REG_LDO5_VOLT_OPT 0x42
+#define BD71828_REG_LDO6_EN 0x44
+//#define BD71828_REG_LDO6_VOLT 0x4
+#define BD71828_REG_LDO7_EN 0x45
+#define BD71828_REG_LDO7_VOLT 0x46
+
+/* GPIO */
+
+#define BD71828_GPIO_DRIVE_MASK 0x2
+#define BD71828_GPIO_OPEN_DRAIN 0x0
+#define BD71828_GPIO_PUSH_PULL 0x2
+#define BD71828_GPIO_OUT_HI 0x1
+#define BD71828_GPIO_OUT_LO 0x0
+#define BD71828_GPIO_OUT_MASK 0x1
+
+#define BD71828_REG_GPIO_CTRL1 0x47
+#define BD71828_REG_GPIO_CTRL2 0x48
+#define BD71828_REG_GPIO_CTRL3 0x49
+#define BD71828_REG_IO_STAT 0xed
+
+/* RTC */
+#define BD71828_REG_RTC_SEC 0x4c
+#define BD71828_REG_RTC_MINUTE 0x4d
+#define BD71828_REG_RTC_HOUR 0x4e
+#define BD71828_REG_RTC_WEEK 0x4f
+#define BD71828_REG_RTC_DAY 0x50
+#define BD71828_REG_RTC_MONTH 0x51
+#define BD71828_REG_RTC_YEAR 0x52
+
+#define BD71828_REG_RTC_ALM0_SEC 0x53
+#define BD71828_REG_RTC_ALM0_MINUTE 0x54
+#define BD71828_REG_RTC_ALM0_HOUR 0x55
+#define BD71828_REG_RTC_ALM0_WEEK 0x56
+#define BD71828_REG_RTC_ALM0_DAY 0x57
+#define BD71828_REG_RTC_ALM0_MONTH 0x58
+#define BD71828_REG_RTC_ALM0_YEAR 0x59
+#define BD71828_REG_RTC_ALM0_MASK 0x61
+
+#define BD71828_REG_RTC_ALM1_SEC 0x5a
+#define BD71828_REG_RTC_ALM1_MINUTE 0x5b
+#define BD71828_REG_RTC_ALM1_HOUR 0x5c
+#define BD71828_REG_RTC_ALM1_WEEK 0x5d
+#define BD71828_REG_RTC_ALM1_DAY 0x5e
+#define BD71828_REG_RTC_ALM1_MONTH 0x5f
+#define BD71828_REG_RTC_ALM1_YEAR 0x60
+#define BD71828_REG_RTC_ALM1_MASK 0x62
+
+#define BD71828_REG_RTC_ALM2 0x63
+
+/* Charger/Battey */
+#define BD71828_REG_CHG_STATE 0x65
+#define BD71828_REG_CHG_FULL 0xd2
+
+/* CLK */
+#define BD71828_REG_OUT32K 0x4B
+
+/* LEDs */
+#define BD71828_REG_LED_CTRL 0x4A
+#define BD71828_MASK_LED_AMBER 0x80
+#define BD71828_MASK_LED_GREEN 0x40
+#define BD71828_LED_ON 0xff
+#define BD71828_LED_OFF 0x0
+
+/* IRQ registers */
+#define BD71828_REG_INT_MASK_BUCK 0xd3
+#define BD71828_REG_INT_MASK_DCIN1 0xd4
+#define BD71828_REG_INT_MASK_DCIN2 0xd5
+#define BD71828_REG_INT_MASK_VSYS 0xd6
+#define BD71828_REG_INT_MASK_CHG 0xd7
+#define BD71828_REG_INT_MASK_BAT 0xd8
+#define BD71828_REG_INT_MASK_BAT_MON1 0xd9
+#define BD71828_REG_INT_MASK_BAT_MON2 0xda
+#define BD71828_REG_INT_MASK_BAT_MON3 0xdb
+#define BD71828_REG_INT_MASK_BAT_MON4 0xdc
+#define BD71828_REG_INT_MASK_TEMP 0xdd
+#define BD71828_REG_INT_MASK_RTC 0xde
+
+
+#define BD71828_REG_INT_MAIN 0xdf
+#define BD71828_REG_INT_BUCK 0xe0
+#define BD71828_REG_INT_DCIN1 0xe1
+#define BD71828_REG_INT_DCIN2 0xe2
+#define BD71828_REG_INT_VSYS 0xe3
+#define BD71828_REG_INT_CHG 0xe4
+#define BD71828_REG_INT_BAT 0xe5
+#define BD71828_REG_INT_BAT_MON1 0xe6
+#define BD71828_REG_INT_BAT_MON2 0xe7
+#define BD71828_REG_INT_BAT_MON3 0xe8
+#define BD71828_REG_INT_BAT_MON4 0xe9
+#define BD71828_REG_INT_TEMP 0xea
+#define BD71828_REG_INT_RTC 0xeb
+#define BD71828_REG_INT_UPDATE 0xec
+
+#define BD71828_MAX_REGISTER BD71828_REG_IO_STAT
+
+/* Masks for main IRQ register bits */
+enum {
+ BD71828_INT_BUCK,
+#define BD71828_INT_BUCK_MASK BIT(BD71828_INT_BUCK)
+ BD71828_INT_DCIN,
+#define BD71828_INT_DCIN_MASK BIT(BD71828_INT_DCIN)
+ BD71828_INT_VSYS,
+#define BD71828_INT_VSYS_MASK BIT(BD71828_INT_VSYS)
+ BD71828_INT_CHG,
+#define BD71828_INT_CHG_MASK BIT(BD71828_INT_CHG)
+ BD71828_INT_BAT,
+#define BD71828_INT_BAT_MASK BIT(BD71828_INT_BAT)
+ BD71828_INT_BAT_MON,
+#define BD71828_INT_BAT_MON_MASK BIT(BD71828_INT_BAT_MON)
+ BD71828_INT_TEMP,
+#define BD71828_INT_TEMP_MASK BIT(BD71828_INT_TEMP)
+ BD71828_INT_RTC,
+#define BD71828_INT_RTC_MASK BIT(BD71828_INT_RTC)
+};
+
+/* Interrupts */
+enum {
+ /* BUCK reg interrupts */
+ BD71828_INT_BUCK1_OCP,
+ BD71828_INT_BUCK2_OCP,
+ BD71828_INT_BUCK3_OCP,
+ BD71828_INT_BUCK4_OCP,
+ BD71828_INT_BUCK5_OCP,
+ BD71828_INT_BUCK6_OCP,
+ BD71828_INT_BUCK7_OCP,
+ BD71828_INT_PGFAULT,
+ /* DCIN1 interrupts */
+ BD71828_INT_DCIN_DET,
+ BD71828_INT_DCIN_RMV,
+ BD71828_INT_CLPS_OUT,
+ BD71828_INT_CLPS_IN,
+ /* DCIN2 interrupts */
+ BD71828_INT_DCIN_MON_RES,
+ BD71828_INT_DCIN_MON_DET,
+ BD71828_INT_LONGPUSH,
+ BD71828_INT_MIDPUSH,
+ BD71828_INT_SHORTPUSH,
+ BD71828_INT_PUSH,
+ BD71828_INT_WDOG,
+ BD71828_INT_SWRESET,
+ /* Vsys */
+ BD71828_INT_VSYS_UV_RES,
+ BD71828_INT_VSYS_UV_DET,
+ BD71828_INT_VSYS_LOW_RES,
+ BD71828_INT_VSYS_LOW_DET,
+ BD71828_INT_VSYS_HALL_IN,
+ BD71828_INT_VSYS_HALL_TOGGLE,
+ BD71828_INT_VSYS_MON_RES,
+ BD71828_INT_VSYS_MON_DET,
+ /* Charger */
+ BD71828_INT_CHG_DCIN_ILIM,
+ BD71828_INT_CHG_TOPOFF_TO_DONE,
+ BD71828_INT_CHG_WDG_TEMP,
+ BD71828_INT_CHG_WDG_TIME,
+ BD71828_INT_CHG_RECHARGE_RES,
+ BD71828_INT_CHG_RECHARGE_DET,
+ BD71828_INT_CHG_RANGED_TEMP_TRANSITION,
+ BD71828_INT_CHG_STATE_TRANSITION,
+ /* Battery */
+ BD71828_INT_BAT_TEMP_NORMAL,
+ BD71828_INT_BAT_TEMP_ERANGE,
+ BD71828_INT_BAT_TEMP_WARN,
+ BD71828_INT_BAT_REMOVED,
+ BD71828_INT_BAT_DETECTED,
+ BD71828_INT_THERM_REMOVED,
+ BD71828_INT_THERM_DETECTED,
+ /* Battery Mon 1 */
+ BD71828_INT_BAT_DEAD,
+ BD71828_INT_BAT_SHORTC_RES,
+ BD71828_INT_BAT_SHORTC_DET,
+ BD71828_INT_BAT_LOW_VOLT_RES,
+ BD71828_INT_BAT_LOW_VOLT_DET,
+ BD71828_INT_BAT_OVER_VOLT_RES,
+ BD71828_INT_BAT_OVER_VOLT_DET,
+ /* Battery Mon 2 */
+ BD71828_INT_BAT_MON_RES,
+ BD71828_INT_BAT_MON_DET,
+ /* Battery Mon 3 (Coulomb counter) */
+ BD71828_INT_BAT_CC_MON1,
+ BD71828_INT_BAT_CC_MON2,
+ BD71828_INT_BAT_CC_MON3,
+ /* Battery Mon 4 */
+ BD71828_INT_BAT_OVER_CURR_1_RES,
+ BD71828_INT_BAT_OVER_CURR_1_DET,
+ BD71828_INT_BAT_OVER_CURR_2_RES,
+ BD71828_INT_BAT_OVER_CURR_2_DET,
+ BD71828_INT_BAT_OVER_CURR_3_RES,
+ BD71828_INT_BAT_OVER_CURR_3_DET,
+ /* Temperature */
+ BD71828_INT_TEMP_BAT_LOW_RES,
+ BD71828_INT_TEMP_BAT_LOW_DET,
+ BD71828_INT_TEMP_BAT_HI_RES,
+ BD71828_INT_TEMP_BAT_HI_DET,
+ BD71828_INT_TEMP_CHIP_OVER_125_RES,
+ BD71828_INT_TEMP_CHIP_OVER_125_DET,
+ BD71828_INT_TEMP_CHIP_OVER_VF_DET,
+ BD71828_INT_TEMP_CHIP_OVER_VF_RES,
+ /* RTC Alarm */
+ BD71828_INT_RTC0,
+ BD71828_INT_RTC1,
+ BD71828_INT_RTC2,
+};
+
+#define BD71828_INT_BUCK1_OCP_MASK 0x1
+#define BD71828_INT_BUCK2_OCP_MASK 0x2
+#define BD71828_INT_BUCK3_OCP_MASK 0x4
+#define BD71828_INT_BUCK4_OCP_MASK 0x8
+#define BD71828_INT_BUCK5_OCP_MASK 0x10
+#define BD71828_INT_BUCK6_OCP_MASK 0x20
+#define BD71828_INT_BUCK7_OCP_MASK 0x40
+#define BD71828_INT_PGFAULT_MASK 0x80
+
+#define BD71828_INT_DCIN_DET_MASK 0x1
+#define BD71828_INT_DCIN_RMV_MASK 0x2
+#define BD71828_INT_CLPS_OUT_MASK 0x4
+#define BD71828_INT_CLPS_IN_MASK 0x8
+ /* DCIN2 interrupts */
+#define BD71828_INT_DCIN_MON_RES_MASK 0x1
+#define BD71828_INT_DCIN_MON_DET_MASK 0x2
+#define BD71828_INT_LONGPUSH_MASK 0x4
+#define BD71828_INT_MIDPUSH_MASK 0x8
+#define BD71828_INT_SHORTPUSH_MASK 0x10
+#define BD71828_INT_PUSH_MASK 0x20
+#define BD71828_INT_WDOG_MASK 0x40
+#define BD71828_INT_SWRESET_MASK 0x80
+ /* Vsys */
+#define BD71828_INT_VSYS_UV_RES_MASK 0x1
+#define BD71828_INT_VSYS_UV_DET_MASK 0x2
+#define BD71828_INT_VSYS_LOW_RES_MASK 0x4
+#define BD71828_INT_VSYS_LOW_DET_MASK 0x8
+#define BD71828_INT_VSYS_HALL_IN_MASK 0x10
+#define BD71828_INT_VSYS_HALL_TOGGLE_MASK 0x20
+#define BD71828_INT_VSYS_MON_RES_MASK 0x40
+#define BD71828_INT_VSYS_MON_DET_MASK 0x80
+ /* Charger */
+#define BD71828_INT_CHG_DCIN_ILIM_MASK 0x1
+#define BD71828_INT_CHG_TOPOFF_TO_DONE_MASK 0x2
+#define BD71828_INT_CHG_WDG_TEMP_MASK 0x4
+#define BD71828_INT_CHG_WDG_TIME_MASK 0x8
+#define BD71828_INT_CHG_RECHARGE_RES_MASK 0x10
+#define BD71828_INT_CHG_RECHARGE_DET_MASK 0x20
+#define BD71828_INT_CHG_RANGED_TEMP_TRANSITION_MASK 0x40
+#define BD71828_INT_CHG_STATE_TRANSITION_MASK 0x80
+ /* Battery */
+#define BD71828_INT_BAT_TEMP_NORMAL_MASK 0x1
+#define BD71828_INT_BAT_TEMP_ERANGE_MASK 0x2
+#define BD71828_INT_BAT_TEMP_WARN_MASK 0x4
+#define BD71828_INT_BAT_REMOVED_MASK 0x10
+#define BD71828_INT_BAT_DETECTED_MASK 0x20
+#define BD71828_INT_THERM_REMOVED_MASK 0x40
+#define BD71828_INT_THERM_DETECTED_MASK 0x80
+ /* Battery Mon 1 */
+#define BD71828_INT_BAT_DEAD_MASK 0x2
+#define BD71828_INT_BAT_SHORTC_RES_MASK 0x4
+#define BD71828_INT_BAT_SHORTC_DET_MASK 0x8
+#define BD71828_INT_BAT_LOW_VOLT_RES_MASK 0x10
+#define BD71828_INT_BAT_LOW_VOLT_DET_MASK 0x20
+#define BD71828_INT_BAT_OVER_VOLT_RES_MASK 0x40
+#define BD71828_INT_BAT_OVER_VOLT_DET_MASK 0x80
+ /* Battery Mon 2 */
+#define BD71828_INT_BAT_MON_RES_MASK 0x1
+#define BD71828_INT_BAT_MON_DET_MASK 0x2
+ /* Battery Mon 3 (Coulomb counter) */
+#define BD71828_INT_BAT_CC_MON1_MASK 0x1
+#define BD71828_INT_BAT_CC_MON2_MASK 0x2
+#define BD71828_INT_BAT_CC_MON3_MASK 0x4
+ /* Battery Mon 4 */
+#define BD71828_INT_BAT_OVER_CURR_1_RES_MASK 0x1
+#define BD71828_INT_BAT_OVER_CURR_1_DET_MASK 0x2
+#define BD71828_INT_BAT_OVER_CURR_2_RES_MASK 0x4
+#define BD71828_INT_BAT_OVER_CURR_2_DET_MASK 0x8
+#define BD71828_INT_BAT_OVER_CURR_3_RES_MASK 0x10
+#define BD71828_INT_BAT_OVER_CURR_3_DET_MASK 0x20
+ /* Temperature */
+#define BD71828_INT_TEMP_BAT_LOW_RES_MASK 0x1
+#define BD71828_INT_TEMP_BAT_LOW_DET_MASK 0x2
+#define BD71828_INT_TEMP_BAT_HI_RES_MASK 0x4
+#define BD71828_INT_TEMP_BAT_HI_DET_MASK 0x8
+#define BD71828_INT_TEMP_CHIP_OVER_125_RES_MASK 0x10
+#define BD71828_INT_TEMP_CHIP_OVER_125_DET_MASK 0x20
+#define BD71828_INT_TEMP_CHIP_OVER_VF_RES_MASK 0x40
+#define BD71828_INT_TEMP_CHIP_OVER_VF_DET_MASK 0x80
+ /* RTC Alarm */
+#define BD71828_INT_RTC0_MASK 0x1
+#define BD71828_INT_RTC1_MASK 0x2
+#define BD71828_INT_RTC2_MASK 0x4
+
+#define BD71828_OUT32K_EN 0x1
+#define BD71828_OUT_TYPE_MASK 0x2
+#define BD71828_OUT_TYPE_OPEN_DRAIN 0x0
+#define BD71828_OUT_TYPE_CMOS 0x2
+
+#endif /* __LINUX_MFD_BD71828_H__ */
diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h
index 922f88008232..ff3dd7578fd3 100644
--- a/include/linux/mfd/rohm-generic.h
+++ b/include/linux/mfd/rohm-generic.h
@@ -8,6 +8,7 @@ enum rohm_chip_type {
ROHM_CHIP_TYPE_BD71837 = 0,
ROHM_CHIP_TYPE_BD71847,
ROHM_CHIP_TYPE_BD70528,
+ ROHM_CHIP_TYPE_BD71828,
ROHM_CHIP_TYPE_AMOUNT
};
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 04/13] mfd: bd718x7: Add compatible for BD71850
From: Matti Vaittinen @ 2020-01-20 6:35 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
ROHM BD71850 PMIC is almost identical to BD71847. Main difference is some
initial voltage values for regulators. The BD71850 can be handled by
BD71847 driver but adding own compatible makes it clearer for one who
creates the DT for board containing this PMIC and allows SW to be
differentiating PMICs if needed.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
No changes since v10
drivers/mfd/rohm-bd718x7.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mfd/rohm-bd718x7.c b/drivers/mfd/rohm-bd718x7.c
index bb86ec829079..c32c1b6c98fa 100644
--- a/drivers/mfd/rohm-bd718x7.c
+++ b/drivers/mfd/rohm-bd718x7.c
@@ -213,6 +213,10 @@ static const struct of_device_id bd718xx_of_match[] = {
.compatible = "rohm,bd71847",
.data = (void *)ROHM_CHIP_TYPE_BD71847,
},
+ {
+ .compatible = "rohm,bd71850",
+ .data = (void *)ROHM_CHIP_TYPE_BD71847,
+ },
{ }
};
MODULE_DEVICE_TABLE(of, bd718xx_of_match);
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 03/13] mfd: rohm PMICs - use platform_device_id to match MFD sub-devices
From: Matti Vaittinen @ 2020-01-20 6:35 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
Thanks to Stephen Boyd I today learned we can use platform_device_id
to do device and module matching for MFD sub-devices!
Do device matching using the platform_device_id instead of using
explicit module_aliases to load modules and custom parent-data field
to do module loading and sub-device matching.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
No changes since v10
drivers/clk/clk-bd718x7.c | 12 ++++++++-
drivers/mfd/rohm-bd70528.c | 3 +--
drivers/mfd/rohm-bd718x7.c | 39 ++++++++++++++++++++++-----
drivers/regulator/bd718x7-regulator.c | 17 +++++++++---
include/linux/mfd/rohm-generic.h | 3 +--
5 files changed, 58 insertions(+), 16 deletions(-)
diff --git a/drivers/clk/clk-bd718x7.c b/drivers/clk/clk-bd718x7.c
index 00926c587390..33699ee1bdf3 100644
--- a/drivers/clk/clk-bd718x7.c
+++ b/drivers/clk/clk-bd718x7.c
@@ -74,6 +74,7 @@ static int bd71837_clk_probe(struct platform_device *pdev)
.name = "bd718xx-32k-out",
.ops = &bd71837_clk_ops,
};
+ enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
c = devm_kzalloc(&pdev->dev, sizeof(*c), GFP_KERNEL);
if (!c)
@@ -87,7 +88,7 @@ static int bd71837_clk_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "No parent clk found\n");
return -EINVAL;
}
- switch (mfd->chip_type) {
+ switch (chip) {
case ROHM_CHIP_TYPE_BD71837:
case ROHM_CHIP_TYPE_BD71847:
c->reg = BD718XX_REG_OUT32K;
@@ -121,11 +122,20 @@ static int bd71837_clk_probe(struct platform_device *pdev)
return rval;
}
+static const struct platform_device_id bd718x7_clk_id[] = {
+ { "bd71837-clk", ROHM_CHIP_TYPE_BD71837 },
+ { "bd71847-clk", ROHM_CHIP_TYPE_BD71847 },
+ { "bd70528-clk", ROHM_CHIP_TYPE_BD70528 },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, bd718x7_clk_id);
+
static struct platform_driver bd71837_clk = {
.driver = {
.name = "bd718xx-clk",
},
.probe = bd71837_clk_probe,
+ .id_table = bd718x7_clk_id,
};
module_platform_driver(bd71837_clk);
diff --git a/drivers/mfd/rohm-bd70528.c b/drivers/mfd/rohm-bd70528.c
index ef6786fd3b00..5c44d3b77b3e 100644
--- a/drivers/mfd/rohm-bd70528.c
+++ b/drivers/mfd/rohm-bd70528.c
@@ -48,7 +48,7 @@ static struct mfd_cell bd70528_mfd_cells[] = {
* We use BD71837 driver to drive the clock block. Only differences to
* BD70528 clock gate are the register address and mask.
*/
- { .name = "bd718xx-clk", },
+ { .name = "bd70528-clk", },
{ .name = "bd70528-wdt", },
{
.name = "bd70528-power",
@@ -236,7 +236,6 @@ static int bd70528_i2c_probe(struct i2c_client *i2c,
dev_set_drvdata(&i2c->dev, &bd70528->chip);
- bd70528->chip.chip_type = ROHM_CHIP_TYPE_BD70528;
bd70528->chip.regmap = devm_regmap_init_i2c(i2c, &bd70528_regmap);
if (IS_ERR(bd70528->chip.regmap)) {
dev_err(&i2c->dev, "Failed to initialize Regmap\n");
diff --git a/drivers/mfd/rohm-bd718x7.c b/drivers/mfd/rohm-bd718x7.c
index 85e7f5133365..bb86ec829079 100644
--- a/drivers/mfd/rohm-bd718x7.c
+++ b/drivers/mfd/rohm-bd718x7.c
@@ -30,14 +30,24 @@ static struct gpio_keys_platform_data bd718xx_powerkey_data = {
.name = "bd718xx-pwrkey",
};
-static struct mfd_cell bd718xx_mfd_cells[] = {
+static struct mfd_cell bd71837_mfd_cells[] = {
{
.name = "gpio-keys",
.platform_data = &bd718xx_powerkey_data,
.pdata_size = sizeof(bd718xx_powerkey_data),
},
- { .name = "bd718xx-clk", },
- { .name = "bd718xx-pmic", },
+ { .name = "bd71837-clk", },
+ { .name = "bd71837-pmic", },
+};
+
+static struct mfd_cell bd71847_mfd_cells[] = {
+ {
+ .name = "gpio-keys",
+ .platform_data = &bd718xx_powerkey_data,
+ .pdata_size = sizeof(bd718xx_powerkey_data),
+ },
+ { .name = "bd71847-clk", },
+ { .name = "bd71847-pmic", },
};
static const struct regmap_irq bd718xx_irqs[] = {
@@ -124,6 +134,9 @@ static int bd718xx_i2c_probe(struct i2c_client *i2c,
{
struct bd718xx *bd718xx;
int ret;
+ unsigned int chip_type;
+ struct mfd_cell *mfd;
+ int cells;
if (!i2c->irq) {
dev_err(&i2c->dev, "No IRQ configured\n");
@@ -136,8 +149,21 @@ static int bd718xx_i2c_probe(struct i2c_client *i2c,
return -ENOMEM;
bd718xx->chip_irq = i2c->irq;
- bd718xx->chip.chip_type = (unsigned int)(uintptr_t)
- of_device_get_match_data(&i2c->dev);
+ chip_type = (unsigned int)(uintptr_t)
+ of_device_get_match_data(&i2c->dev);
+ switch (chip_type) {
+ case ROHM_CHIP_TYPE_BD71837:
+ mfd = bd71837_mfd_cells;
+ cells = ARRAY_SIZE(bd71837_mfd_cells);
+ break;
+ case ROHM_CHIP_TYPE_BD71847:
+ mfd = bd71847_mfd_cells;
+ cells = ARRAY_SIZE(bd71847_mfd_cells);
+ break;
+ default:
+ dev_err(&i2c->dev, "Unknown device type");
+ return -EINVAL;
+ }
bd718xx->chip.dev = &i2c->dev;
dev_set_drvdata(&i2c->dev, bd718xx);
@@ -170,8 +196,7 @@ static int bd718xx_i2c_probe(struct i2c_client *i2c,
button.irq = ret;
ret = devm_mfd_add_devices(bd718xx->chip.dev, PLATFORM_DEVID_AUTO,
- bd718xx_mfd_cells,
- ARRAY_SIZE(bd718xx_mfd_cells), NULL, 0,
+ mfd, cells, NULL, 0,
regmap_irq_get_domain(bd718xx->irq_data));
if (ret)
dev_err(&i2c->dev, "Failed to create subdevices\n");
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index 13a43eee2e46..6beaf867d9cb 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -1164,6 +1164,7 @@ static int bd718xx_probe(struct platform_device *pdev)
int i, j, err;
bool use_snvs;
+ enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
mfd = dev_get_drvdata(pdev->dev.parent);
if (!mfd) {
@@ -1172,8 +1173,8 @@ static int bd718xx_probe(struct platform_device *pdev)
goto err;
}
- if (mfd->chip.chip_type >= ROHM_CHIP_TYPE_AMOUNT ||
- !pmic_regulators[mfd->chip.chip_type].r_datas) {
+ if (chip >= ROHM_CHIP_TYPE_AMOUNT || chip < 0 ||
+ !pmic_regulators[chip].r_datas) {
dev_err(&pdev->dev, "Unsupported chip type\n");
err = -EINVAL;
goto err;
@@ -1215,13 +1216,13 @@ static int bd718xx_probe(struct platform_device *pdev)
}
}
- for (i = 0; i < pmic_regulators[mfd->chip.chip_type].r_amount; i++) {
+ for (i = 0; i < pmic_regulators[chip].r_amount; i++) {
const struct regulator_desc *desc;
struct regulator_dev *rdev;
const struct bd718xx_regulator_data *r;
- r = &pmic_regulators[mfd->chip.chip_type].r_datas[i];
+ r = &pmic_regulators[chip].r_datas[i];
desc = &r->desc;
config.dev = pdev->dev.parent;
@@ -1281,11 +1282,19 @@ static int bd718xx_probe(struct platform_device *pdev)
return err;
}
+static const struct platform_device_id bd718x7_pmic_id[] = {
+ { "bd71837-pmic", ROHM_CHIP_TYPE_BD71837 },
+ { "bd71847-pmic", ROHM_CHIP_TYPE_BD71847 },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, bd718x7_pmic_id);
+
static struct platform_driver bd718xx_regulator = {
.driver = {
.name = "bd718xx-pmic",
},
.probe = bd718xx_probe,
+ .id_table = bd718x7_pmic_id,
};
module_platform_driver(bd718xx_regulator);
diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h
index bff15ac26f2c..922f88008232 100644
--- a/include/linux/mfd/rohm-generic.h
+++ b/include/linux/mfd/rohm-generic.h
@@ -4,7 +4,7 @@
#ifndef __LINUX_MFD_ROHM_H__
#define __LINUX_MFD_ROHM_H__
-enum {
+enum rohm_chip_type {
ROHM_CHIP_TYPE_BD71837 = 0,
ROHM_CHIP_TYPE_BD71847,
ROHM_CHIP_TYPE_BD70528,
@@ -12,7 +12,6 @@ enum {
};
struct rohm_regmap_dev {
- unsigned int chip_type;
struct device *dev;
struct regmap *regmap;
};
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 02/13] dt-bindings: mfd: Document ROHM BD71828 bindings
From: Matti Vaittinen @ 2020-01-20 6:34 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
ROHM BD71828 Power management IC integrates 7 buck converters, 7 LDOs,
a real-time clock (RTC), 3 GPO/regulator control pins, HALL input
and a 32.768 kHz clock gate.
Document the dt bindings drivers are using.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
No changes since v10
.../bindings/mfd/rohm,bd71828-pmic.yaml | 193 ++++++++++++++++++
1 file changed, 193 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
new file mode 100644
index 000000000000..4fbb9e734284
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
@@ -0,0 +1,193 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD71828 Power Management Integrated Circuit bindings
+
+maintainers:
+ - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
+
+description: |
+ BD71828GW is a single-chip power management IC for battery-powered portable
+ devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA
+ single-cell linear charger. Also included is a Coulomb counter, a real-time
+ clock (RTC), and a 32.768 kHz clock gate.
+
+properties:
+ compatible:
+ const: rohm,bd71828
+
+ reg:
+ description:
+ I2C slave address.
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+ description: |
+ The first cell is the pin number and the second cell is used to specify
+ flags. See ../gpio/gpio.txt for more information.
+
+ clocks:
+ maxItems: 1
+
+ "#clock-cells":
+ const: 0
+
+ rohm,charger-sense-resistor-ohms:
+ minimum: 10000000
+ maximum: 50000000
+ description: |
+ BD71827 and BD71828 have SAR ADC for measuring charging currents.
+ External sense resistor (RSENSE in data sheet) should be used. If some
+ other but 30MOhm resistor is used the resistance value should be given
+ here in Ohms.
+
+ regulators:
+ $ref: ../regulator/rohm,bd71828-regulator.yaml
+ description:
+ List of child nodes that specify the regulators.
+
+ leds:
+ $ref: ../leds/rohm,bd71828-leds.yaml
+
+ gpio-reserved-ranges:
+ description: |
+ Usage of BD71828 GPIO pins can be changed via OTP. This property can be
+ used to mark the pins which should not be configured for GPIO. Please see
+ the ../gpio/gpio.txt for more information.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - "#clock-cells"
+ - regulators
+ - gpio-controller
+ - "#gpio-cells"
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/leds/common.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pmic: pmic@4b {
+ compatible = "rohm,bd71828";
+ reg = <0x4b>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+
+ clocks = <&osc 0>;
+ #clock-cells = <0>;
+ clock-output-names = "bd71828-32k-out";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-reserved-ranges = <0 1>, <2 1>;
+
+ rohm,charger-sense-resistor-ohms = <10000000>;
+
+ regulators {
+ buck1: BUCK1 {
+ regulator-name = "buck1";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-ramp-delay = <2500>;
+ };
+ buck2: BUCK2 {
+ regulator-name = "buck2";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-ramp-delay = <2500>;
+ };
+ buck3: BUCK3 {
+ regulator-name = "buck3";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <2000000>;
+ };
+ buck4: BUCK4 {
+ regulator-name = "buck4";
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1800000>;
+ };
+ buck5: BUCK5 {
+ regulator-name = "buck5";
+ regulator-min-microvolt = <2500000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ buck6: BUCK6 {
+ regulator-name = "buck6";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-ramp-delay = <2500>;
+ };
+ buck7: BUCK7 {
+ regulator-name = "buck7";
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-ramp-delay = <2500>;
+ };
+ ldo1: LDO1 {
+ regulator-name = "ldo1";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ ldo2: LDO2 {
+ regulator-name = "ldo2";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ ldo3: LDO3 {
+ regulator-name = "ldo3";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ ldo4: LDO4 {
+ regulator-name = "ldo4";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ ldo5: LDO5 {
+ regulator-name = "ldo5";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ ldo6: LDO6 {
+ regulator-name = "ldo6";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+ ldo7_reg: LDO7 {
+ regulator-name = "ldo7";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+ };
+
+ leds {
+ compatible = "rohm,bd71828-leds";
+
+ led-1 {
+ rohm,led-compatible = "bd71828-grnled";
+ function = LED_FUNCTION_INDICATOR;
+ color = <LED_COLOR_ID_GREEN>;
+ };
+ led-2 {
+ rohm,led-compatible = "bd71828-ambled";
+ function = LED_FUNCTION_CHARGING;
+ color = <LED_COLOR_ID_AMBER>;
+ };
+ };
+ };
+ };
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 01/13] dt-bindings: leds: ROHM BD71282 PMIC LED driver
From: Matti Vaittinen @ 2020-01-20 6:34 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
In-Reply-To: <cover.1579501711.git.matti.vaittinen@fi.rohmeurope.com>
Document ROHM BD71828 PMIC LED driver device tree bindings.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
---
No changes since v10
.../bindings/leds/rohm,bd71828-leds.yaml | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
diff --git a/Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml b/Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
new file mode 100644
index 000000000000..b50f4bcc98f1
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/rohm,bd71828-leds.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD71828 Power Management Integrated Circuit LED driver
+
+maintainers:
+ - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
+
+description: |
+ This module is part of the ROHM BD71828 MFD device. For more details
+ see Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml.
+
+ The LED controller is represented as a sub-node of the PMIC node on the device
+ tree.
+
+ The device has two LED outputs referred as GRNLED and AMBLED in data-sheet.
+
+select: false
+
+properties:
+ compatible:
+ const: rohm,bd71828-leds
+
+patternProperties:
+ "^led-[1-2]$":
+ type: object
+ description:
+ Properties for a single LED.
+ properties:
+ #allOf:
+ #- $ref: "common.yaml#"
+ rohm,led-compatible:
+ description: LED identification string
+ allOf:
+ - $ref: "/schemas/types.yaml#/definitions/string"
+ - enum:
+ - bd71828-ambled
+ - bd71828-grnled
+ function:
+ description:
+ Purpose of LED as defined in dt-bindings/leds/common.h
+ $ref: "/schemas/types.yaml#/definitions/string"
+ color:
+ description:
+ LED colour as defined in dt-bindings/leds/common.h
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+
+required:
+ - compatible
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply related
* [PATCH v11 00/13] Support ROHM BD71828 PMIC
From: Matti Vaittinen @ 2020-01-20 6:33 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Jacek Anaszewski, Pavel Machek, Dan Murphy, Rob Herring,
Mark Rutland, Lee Jones, Liam Girdwood, Mark Brown,
Jonathan Corbet, Michael Turquette, Stephen Boyd, Linus Walleij,
Bartosz Golaszewski, Alessandro Zummo, Alexandre Belloni,
Greg Kroah-Hartman, Arnd Bergmann, Mauro Carvalho Chehab,
Wolfram Sang, Phil Edworthy, Noralf Trønnes, linux-leds,
devicetree, linux-kernel, linux-doc, linux-clk, linux-gpio,
linux-rtc
Patch series introducing support for ROHM BD71828 PMIC
ROHM BD71828 is a power management IC containing 7 bucks and 7 LDOs. All
regulators can be controlled individually via I2C. Bucks 1,2,6 and
7 can also be assigned to a "regulator group" controlled by run-levels.
Eg. Run level specific voltages and enable/disable statuses for each of
these bucks can be set via register interface. The buck run-level group
assignment (selection if buck is to be controlled individually or via
run-levels) can be changed at run-time via I2C.
This patch series brings only the basic support for controlling
regulators individually via I2C.
In addition to the bucks and LDOs there are:
- The usual clk gate
- 4 IO pins (mostly usable as GPO or tied to specific purpose)
- power button support
- RTC
- two LEDs
- battery charger
- HALL sensor input
This patch series adds support to regulators, clk, RTC, GPIOs and LEDs.
Power-supply driver for charger is not included in this series.
The series also adds LED DT-node lookup based on node name or given
property name/value pair in LED core. It also adds generic default-state
and default-trigger property handling to LED core. Follow-up patches
simplifying few other LED drivers should follow.
Changelog v11:
- converted a macro to enum member as was requested by Lee.
Changelog v10:
- Split RTC patch to a BD70528 fix (which hopefully goes to 5.4) and to
BD71828 support
Changelog v9: (Changes suggested by Lee)
- Added kerneldoc to struct rohm_dvs_config
- cleaned few comments
- updated copyright date
- renamed variable 'mfd' to 'parent'.
Changelog v8:
LEDs:
- Fixed bunch of typos.
- Corrected the commit message which errorneously contained the
'leds-compatible' which I dropped in favour of match_property.
- use max_brightness instead of LED_FULL if it is given when
handling the default_state, "on".
- clean fwnode_owned at the end of unsuccessful registration or
at the end of deregistration.
- fix the accidental linuxdoc comment.
- rename led_find_fwnode to led_get_fwnode as it increases refcount.
Changelog v7:
- Rebased on top of v5.5-rc2
- Dropped already applied patches
- basic regulator support (in regulator tree now)
- regulator dt-bindings (in regulator tree now)
- gpio devm function documentation (in GPIO tree now)
- Dropped new devm-variant of gpio_array getting for MFD sub-devices who
have consumer information in parent DT node as gpio consumer was
dropped from the series
- removed extra line-breaks from MFD driver and Makefile
- fixed RTC patch subject line (added missing colon)
- included a patch which adds compatible for ROHM BD71850 PMIC
Changelog v6:
Rebased on top of v5.5-rc1
LED core:
- Do new fw-node look-up only if the new match data is given. That
way behaviour for existing drivers is not changed
- Handle generic LED properties by core only if explisitly requested
in init-data. That way behaviour for existing drivers is not changed
until they are verified to work.
BD71828 LEDs:
- Fix module loading by adding "dummy" of_device_id table.
DT bindings:
All:
- Remove regulator run-level properties as run-level support was
dropped for now.
- Change SPDX to dual lisence
LED:
- added select: false
- replace oneOf + const by enum
Regulator:
- remove forgotten comments
- comment indenting
MFD:
- remove unnecessary descriptions
Regulators:
- Dropped patch 12 with run-level controls
- Dropped unnecessary ramp_delay_supported() - ram_delay ops were
already only filled for DVS bucks.
GPIO:
- rename internal function.
RTC:
- Added missing blank line
Changelog v5:
Only LED patch (patch 15) changed, rest as in v4.
LED:
- Fixed issues reported by Dan Carpenter and kbuild-bot static
analysis.
Changelog v4 (first non RFC):
General:
- Changed subdevice loading and chip version identification to use
platform ID.
- License identifiers changed to GPL-2.0-only
MFD:
- Styling fixes mostly
DT-Bindings:
- a few more checks as suggested by Rob Herring.
- Order of DT patches changed.
- me as maintainer
- standard units to new properties (microvolts, ohms)
- runlevel values in an array
LED:
- BD71828 driver added (back)
- Added DT support
- Added LED DT node lookup in led framework when init_data is given
with DT node match information.
- Added common property parsing for default-state and
default-trigger.
Regulators:
- dropped sysfs interfaces
- fixed module unload/reload by binding gpio consumer information to
regulator device not to MFD.
GPIO:
- Added devm_gpiod_get_parent_array
- added few missing devm functions to documentation
Changelog v3:
DT-Bindings:
- yamlify
- add LED binding doc
CLK:
- Move clk register definitions from MFD headers to clk driver
GPIO:
- Add generic direction define and use it.
LED:
- Drop LED driver from the series (for now).
Changelog v2: Mainly RTC and GPIO fixes suggested by Alexandre and Bartosz
General:
-Patch ordering changed to provide dt binding documents right after the
MFD core.
DT-Bindings for regulators (Patch 3)
-Fix typo in PMIC model number
RTC (patch 11)
-Reverted renaming in order to reduce patch size.
-Reworded commit message
BD71828 regulator (patch 7)
-Add MODULE_ALIAS
GPIO (patch 12)
-Remove file-name from comment
-prefix IN and OUT defines with chip type
-improved documentation for the INPUT only pin.
-removed empty left-over function
-removed unnecessary #ifdef CONFIG_OF_GPIO
-removed unnecessary error print
-Add MODULE_ALIAS
Patch 1:
dt-bindings for LEDs on BD71828 PMIC
Patch 2:
dt-bindings for BD71828 PMIC
Patch 3:
Convert rohm PMICs with common sub-devices to use platform_
device_id to match MFD sub-devices
Patch 4:
Add compatible for BD71850
Patch 5:
BD71828 MFD core.
Patch 6:
Power button support using GPIO keys.
Patch 7:
CLK gate support using existing clk-bd718x7
Patch 8:
Split existing bd718x7 regulator driver to generic ROHM dt
parsing portion (used by more than one ROHM drivers) and
bd718x8 specific parts
Patch 9:
Fix BD70528 RTC HOUR mask
Patch 10:
Support BD71828 RTC block using BD70528 RTC driver
Patch 11:
Allow control of GP(I)O pins on BD71828 via GPIO subsystem
Patch 12:
Add LED node lookup and common LED binding parsing support
to LED class/core
Patch 13:
Support toggling the LEDs on BD71828.
---
Matti Vaittinen (13):
dt-bindings: leds: ROHM BD71282 PMIC LED driver
dt-bindings: mfd: Document ROHM BD71828 bindings
mfd: rohm PMICs - use platform_device_id to match MFD sub-devices
mfd: bd718x7: Add compatible for BD71850
mfd: bd71828: Support ROHM BD71828 PMIC - core
mfd: input: bd71828: Add power-key support
clk: bd718x7: Support ROHM BD71828 clk block
regulator: bd718x7: Split driver to common and bd718x7 specific parts
mfd: bd70528: Fix hour register mask
rtc: bd70528: add BD71828 support
gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs
leds: Add common LED binding parsing support to LED class/core
led: bd71828: Support LED outputs on ROHM BD71828 PMIC
.../bindings/leds/rohm,bd71828-leds.yaml | 52 +++
.../bindings/mfd/rohm,bd71828-pmic.yaml | 193 ++++++++
drivers/clk/Kconfig | 6 +-
drivers/clk/clk-bd718x7.c | 50 ++-
drivers/gpio/Kconfig | 12 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-bd71828.c | 159 +++++++
drivers/leds/Kconfig | 10 +
drivers/leds/Makefile | 1 +
drivers/leds/led-class.c | 115 ++++-
drivers/leds/led-core.c | 258 +++++++++--
drivers/leds/leds-bd71828.c | 118 +++++
drivers/mfd/Kconfig | 15 +
drivers/mfd/Makefile | 1 +
drivers/mfd/rohm-bd70528.c | 3 +-
drivers/mfd/rohm-bd71828.c | 344 ++++++++++++++
drivers/mfd/rohm-bd718x7.c | 43 +-
drivers/regulator/Kconfig | 4 +
drivers/regulator/Makefile | 1 +
drivers/regulator/bd718x7-regulator.c | 200 +++------
drivers/regulator/rohm-regulator.c | 95 ++++
drivers/rtc/Kconfig | 3 +-
drivers/rtc/rtc-bd70528.c | 220 +++++++--
include/linux/leds.h | 94 +++-
include/linux/mfd/rohm-bd70528.h | 19 +-
include/linux/mfd/rohm-bd71828.h | 423 ++++++++++++++++++
include/linux/mfd/rohm-bd718x7.h | 6 -
include/linux/mfd/rohm-generic.h | 70 ++-
include/linux/mfd/rohm-shared.h | 21 +
29 files changed, 2248 insertions(+), 289 deletions(-)
create mode 100644 Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
create mode 100644 drivers/gpio/gpio-bd71828.c
create mode 100644 drivers/leds/leds-bd71828.c
create mode 100644 drivers/mfd/rohm-bd71828.c
create mode 100644 drivers/regulator/rohm-regulator.c
create mode 100644 include/linux/mfd/rohm-bd71828.h
create mode 100644 include/linux/mfd/rohm-shared.h
base-commit: b3a987b0264d ("Linux 5.5-rc6")
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
^ permalink raw reply
* Re: [PATCH 08/12] linux-user: Add support for setting alsa timer enhanced read using ioctl
From: Alexandre Belloni @ 2020-01-17 21:54 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: Arnd Bergmann, Laurent Vivier, Filip Bozuta, Peter Maydell,
Daniel P. Berrangé, Richard Henderson, qemu-devel@nongnu.org,
Max Filippov, amarkovic@wavecomp.com, philmd@redhat.com,
linux-rtc
In-Reply-To: <CAL1e-=gv_L0fuq9t8mmOiZ2D-CwpPrZZOjwrDwKwe09jvWJpXQ@mail.gmail.com>
Hi,
Quick answers to your very good questions below:
On 17/01/2020 21:50:34+0100, Aleksandar Markovic wrote:
> Alexandre (and Arnd too, or any other person knowledgeable in the area),
>
> I just need to clarify a couple of details with you, please.
>
> Firstly, here is what man page rtc(4) says:
>
> "The /dev/rtc (or /dev/rtc0, /dev/rtc1, etc.) device can be opened
> only once (until it is closed) and it is read-only. On read(2) and
> select(2) the calling process is blocked until the next interrupt from
> that RTC is received. Following the interrupt, the process can read a
> long integer, of which the least significant byte contains a bit mask
> encoding the types of interrupt that occurred, while the remaining 3
> bytes contain the number of interrupts since the last read(2)."
>
> So, it looks read() will always return only 4 bytes of useful info
> (regardless of host being 32-bit/64-bit).
>
> My questions are:
>
> - Is the description in man page genuinely accurate?
>
It is accurate. It is a mask of:
#define RTC_IRQF 0x80 /* Any of the following is active */
#define RTC_PF 0x40 /* Periodic interrupt */
#define RTC_AF 0x20 /* Alarm interrupt */
#define RTC_UF 0x10 /* Update interrupt for 1Hz RTC */
Which will most likely be RTC_IRQF | RTC_AF.
> - To me (but I am really an outsider to using RTC in applications),
> this feature (blocking read()/select()) even looks very nice and
> convenient, in all fairness. But I would like to ask you: Is this
> feature used rarely or frequently by other libraries/tools/etc.? In
> other words, is the feature "obscure" or "crucial" part of RTC kernel
> support? Or, something in between?
>
Nobody is actually using the return value.
> - Does MC146818 support this feature?
>
This feature is implemented in the RTC core so it is supported by all
RTCs that have alarms.
Internally, the value is an unsigned long and it is casted properly by
put_user in rtc_dev_read:
https://elixir.bootlin.com/linux/v5.4/source/drivers/rtc/dev.c#L178
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply
* Re: [PATCH 08/12] linux-user: Add support for setting alsa timer enhanced read using ioctl
From: Arnd Bergmann @ 2020-01-17 21:45 UTC (permalink / raw)
To: Aleksandar Markovic
Cc: Laurent Vivier, Filip Bozuta, Peter Maydell,
Daniel P. Berrangé, Richard Henderson, qemu-devel@nongnu.org,
Max Filippov, amarkovic@wavecomp.com, philmd@redhat.com,
Alexandre Belloni, linux-rtc
In-Reply-To: <CAL1e-=gv_L0fuq9t8mmOiZ2D-CwpPrZZOjwrDwKwe09jvWJpXQ@mail.gmail.com>
On Fri, Jan 17, 2020 at 9:50 PM Aleksandar Markovic
<aleksandar.m.mail@gmail.com> wrote:
> Alexandre (and Arnd too, or any other person knowledgeable in the area),
>
> I just need to clarify a couple of details with you, please.
>
> Firstly, here is what man page rtc(4) says:
>
> "The /dev/rtc (or /dev/rtc0, /dev/rtc1, etc.) device can be opened
> only once (until it is closed) and it is read-only. On read(2) and
> select(2) the calling process is blocked until the next interrupt from
> that RTC is received. Following the interrupt, the process can read a
> long integer, of which the least significant byte contains a bit mask
> encoding the types of interrupt that occurred, while the remaining 3
> bytes contain the number of interrupts since the last read(2)."
>
> So, it looks read() will always return only 4 bytes of useful info
> (regardless of host being 32-bit/64-bit).
It says "long integer", which is 64-bit on a 64-bit machine.
> My questions are:
>
> - Is the description in man page genuinely accurate?
Starting with linux-2.6.18, there is another possibility: If an
application asks for exactly four bytes on a 64-bit kernel,
it gets the lower four bytes, as it would on a 32-bit kernel.
This is a hack that was introduced for running 32-bit compat
tasks.
For any other size less than sizeof(long), the kernel reports
an EINVAL error, and for anything larger or equal to sizeof(long)
it attempts to output a long word.
> - To me (but I am really an outsider to using RTC in applications),
> this feature (blocking read()/select()) even looks very nice and
> convenient, in all fairness. But I would like to ask you: Is this
> feature used rarely or frequently by other libraries/tools/etc.? In
> other words, is the feature "obscure" or "crucial" part of RTC kernel
> support? Or, something in between?
> - Does MC146818 support this feature?
No idea, I'll leave these for Alexandre or someone else to answer.
Arnd
^ permalink raw reply
* Re: [PATCH 08/12] linux-user: Add support for setting alsa timer enhanced read using ioctl
From: Aleksandar Markovic @ 2020-01-17 20:50 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Laurent Vivier, Filip Bozuta, Peter Maydell,
Daniel P. Berrangé, Richard Henderson, qemu-devel@nongnu.org,
Max Filippov, amarkovic@wavecomp.com, philmd@redhat.com,
Alexandre Belloni, linux-rtc
In-Reply-To: <CAK8P3a3o1tM__gP0keo0Dg03tiJQt=5hRGhiXWga4B6gjsVbxA@mail.gmail.com>
On Thu, Jan 16, 2020 at 1:00 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Thu, Jan 16, 2020 at 12:27 PM Aleksandar Markovic
> <aleksandar.m.mail@gmail.com> wrote:
> > On Thursday, January 16, 2020, Aleksandar Markovic <aleksandar.m.mail@gmail.com> wrote:
> >> On Wednesday, January 15, 2020, Laurent Vivier <laurent@vivier.eu> wrote:
> >>> Le 15/01/2020 à 20:17, Filip Bozuta a écrit :
> >>> > On 15.1.20. 17:37, Arnd Bergmann wrote:
> >>> >> On Wed, Jan 15, 2020 at 5:32 PM Laurent Vivier <laurent@vivier.eu> wrote:
> >>> >>> Le 15/01/2020 à 17:18, Arnd Bergmann a écrit :
> >>> >>>> On Wed, Jan 15, 2020 at 4:53 PM Filip Bozuta
> >>> >>>> <Filip.Bozuta@rt-rk.com> wrote:
> >>> >>>>> This patch implements functionality of following ioctl:
> >>> >>>>>
> >>> >>>>> SNDRV_TIMER_IOCTL_TREAD - Setting enhanced time read
> >>> >>>>>
> >>> >>>>> Sets enhanced time read which is used for reading time with
> >>> >>>>> timestamps
> >>> >>>>> and events. The third ioctl's argument is a pointer to an
> >>> >>>>> 'int'. Enhanced
> >>> >>>>> reading is set if the third argument is different than 0,
> >>> >>>>> otherwise normal
> >>> >>>>> time reading is set.
> >>> >>>>>
> >>> >>>>> Implementation notes:
> >>> >>>>>
> >>> >>>>> Because the implemented ioctl has 'int' as its third argument,
> >>> >>>>> the
> >>> >>>>> implementation was straightforward.
> >>> >>>>>
> >>> >>>>> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
> >>> >>>> I think this one is wrong when you go between 32-bit and 64-bit
> >>> >>> kernel uses an "int" and "int" is always 32bit.
> >>> >>> The problem is most likely with timespec I think.
> >>> >>>
> >>> >>>> targets, and it gets worse with the kernel patches that just got
> >>> >>>> merged for linux-5.5, which extends the behavior to deal with
> >>> >>>> 64-bit time_t on 32-bit architectures.
> >>> >>>>
> >>> >>>> Please have a look at
> >>> >>>> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/?h=80fe7430c70859
> >>> >>>>
> >>> >>> Yes, we already had the same kind of problem with SIOCGSTAMP and
> >>> >>> SIOCGSTAMPNS.
> >>> >>>
> >>> >>> Do the kernel patches add new ioctl numbers to differentiate 32bit and
> >>> >>> 64bit time_t?
> >>> >> Yes, though SNDRV_TIMER_IOCTL_TREAD is worse: the ioctl argument
> >>> >> is a pure 'int' that decides what format you get when you 'read' from the
> >>> >> same file descriptor.
> >>> >>
> >>> >> For emulating 64-bit on 32-bit kernels, you have to use the new
> >>> >> SNDRV_TIMER_IOCTL_TREAD64, and for emulating 32-bit on
> >>> >> 64-bit kernels, you probably have to return -ENOTTY to
> >>> >> SNDRV_TIMER_IOCTL_TREAD_OLD unless you also want to
> >>> >> emulate the read() behavior.
> >>> >> When a 32-bit process calls SNDRV_TIMER_IOCTL_TREAD64,
> >>> >> you can translate that into the 64-bit
> >>> >> SNDRV_TIMER_IOCTL_TREAD_OLD.
> >>> >
> >>> > Thank you for bringing this up to my attention. Unfortunately i have
> >>> > some duties of academic nature in next month so i won't have much time
> >>> > fix this bug. I will try to fix this as soon as possible.
> >>>
> >>> Could you at least to try to have a mergeable series before you have to
> >>> stop to work on this?
> >>>
> >>> You can only manage the case before the change reported by Arnd (I will
> >>> manage the new case myself later).
>
> >>
> >> Sorry for interjecting myself into this discussion, but I just want to let you know about some related practicalities.
> >>
> >> Filip is a student that is from time to time (usually between two exam seasons) an intern in our company, working 4 hours each work day. He spent his internship in different teams in prevous years, and, from around mid-October 2019, was appointed to QEMU team. After some introductory tasks, he was assigned his main task: linux-user support for RTCs and ALSA timers. This series is the result of his work, and, to my great pleasure, is virtually entirely his independant work. I am positive he can complete the series by himself, even in the light of additional complexities mentioned in this thread.
> >>
> >> However, his exam season just started (Jan. 15th), and lasts till Feb. 15th. Our policy, in general, is not to burden the students during exam seasons, and that is why we can't expect prompt updates from him for the time being.
> >>
> >> In view of this, Laurent, please take Filip's status into consideration. As far as mergeability is concerned, my impression is that patches 1-6 and 13 are ready for merging, while patches 7-12 would require some additional (netlink-support-like) work, that would unfortunately be possible only after Feb. 15th.
> >>
>
> > Laurent, hi again.
> >
> > I am not completely familiar with all details of Filip's work, since, as I said, he had
> > large degree of independance (which was intentional, and is a desired and good
> > thing IMHO), but taking a closer look, a question starting lingering: Do we need
> > special handling od read() even for RTC devices - not only ALSA timer devices?
>
> Adding Alexandre Belloni and the RTC list to Cc for more expertise. Alexandre,
> this question is about how qemu-user should emulate the rtc ioctl interface when
> running a user binary for a foreign architecture. The ioctl emulation seems fine
> to me, but read() from /dev/rtc is probably not.
>
> As I understand it, reading from /dev/rtc is one of the more obscure features.
> This would return either 32 bits or 64 bits of structured data from the kernel,
> depending on how much data was requested and whether the kernel runs
> as 64 bit. A 32-bit process running on a 64-bit kernel will get the correct
> result when it asks for 4 bytes, but probably not when it asks for 8 bytes.
> (we could fix this with an explict check for in_compat_syscall() in the kernel
> function).
>
> A process running on qemu with the opposite endianess will always get the
> wrong result (unless the kernel returns 0), and emulating 64-bit task on
> a 32-bit kernel will result in only four bytes to be read, which also likely
> results in incorrect behavior.
>
Alexandre (and Arnd too, or any other person knowledgeable in the area),
I just need to clarify a couple of details with you, please.
Firstly, here is what man page rtc(4) says:
"The /dev/rtc (or /dev/rtc0, /dev/rtc1, etc.) device can be opened
only once (until it is closed) and it is read-only. On read(2) and
select(2) the calling process is blocked until the next interrupt from
that RTC is received. Following the interrupt, the process can read a
long integer, of which the least significant byte contains a bit mask
encoding the types of interrupt that occurred, while the remaining 3
bytes contain the number of interrupts since the last read(2)."
So, it looks read() will always return only 4 bytes of useful info
(regardless of host being 32-bit/64-bit).
My questions are:
- Is the description in man page genuinely accurate?
- To me (but I am really an outsider to using RTC in applications),
this feature (blocking read()/select()) even looks very nice and
convenient, in all fairness. But I would like to ask you: Is this
feature used rarely or frequently by other libraries/tools/etc.? In
other words, is the feature "obscure" or "crucial" part of RTC kernel
support? Or, something in between?
- Does MC146818 support this feature?
Thanks a lot in advance for any response!
Aleksandar
P.S. for Arnd: I sent this message only to you, by mistake, around 15
min ago. Now I include everybody.
> Arnd
^ permalink raw reply
* Re: [PATCH v1 7/8] ASoC: Intel: Switch DMI table match to a test of variable
From: Pierre-Louis Bossart @ 2020-01-17 19:10 UTC (permalink / raw)
To: Andy Shevchenko, Thomas Gleixner, Ingo Molnar, Borislav Petkov,
H. Peter Anvin, x86, Alessandro Zummo, Alexandre Belloni,
linux-rtc, Guilherme G . Piccoli, linux-kernel
Cc: Cezary Rojewski, Liam Girdwood, Jie Yang, Mark Brown, alsa-devel
In-Reply-To: <20200117175626.56358-7-andriy.shevchenko@linux.intel.com>
On 1/17/20 11:56 AM, Andy Shevchenko wrote:
> Since we have a common x86 quirk that provides an exported variable,
> use it instead of local DMI table match.
>
> Cc: Cezary Rojewski <cezary.rojewski@intel.com>
> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com>
> Cc: Jie Yang <yang.jie@linux.intel.com>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: alsa-devel@alsa-project.org
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Thanks Andy.
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> ---
> .../intel/common/soc-acpi-intel-cht-match.c | 28 ++-----------------
> 1 file changed, 3 insertions(+), 25 deletions(-)
>
> diff --git a/sound/soc/intel/common/soc-acpi-intel-cht-match.c b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
> index d0fb43c2b9f6..833d2e130e6e 100644
> --- a/sound/soc/intel/common/soc-acpi-intel-cht-match.c
> +++ b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
> @@ -5,31 +5,11 @@
> * Copyright (c) 2017, Intel Corporation.
> */
>
> -#include <linux/dmi.h>
> +#include <linux/platform_data/x86/machine.h>
> +
> #include <sound/soc-acpi.h>
> #include <sound/soc-acpi-intel-match.h>
>
> -static unsigned long cht_machine_id;
> -
> -#define CHT_SURFACE_MACH 1
> -
> -static int cht_surface_quirk_cb(const struct dmi_system_id *id)
> -{
> - cht_machine_id = CHT_SURFACE_MACH;
> - return 1;
> -}
> -
> -static const struct dmi_system_id cht_table[] = {
> - {
> - .callback = cht_surface_quirk_cb,
> - .matches = {
> - DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
> - DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
> - },
> - },
> - { }
> -};
> -
> static struct snd_soc_acpi_mach cht_surface_mach = {
> .id = "10EC5640",
> .drv_name = "cht-bsw-rt5645",
> @@ -43,9 +23,7 @@ static struct snd_soc_acpi_mach *cht_quirk(void *arg)
> {
> struct snd_soc_acpi_mach *mach = arg;
>
> - dmi_check_system(cht_table);
> -
> - if (cht_machine_id == CHT_SURFACE_MACH)
> + if (x86_microsoft_surface_3_machine)
> return &cht_surface_mach;
> else
> return mach;
>
^ permalink raw reply
* Re: [PATCH] rtc: cmos: Don't enable shared interrupts if using HPET-based IRQ handler
From: Guilherme Piccoli @ 2020-01-17 18:01 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Thomas Gleixner, a.zummo, alexandre.belloni, linux-rtc,
Guilherme G. Piccoli
In-Reply-To: <20200117175756.GV32742@smile.fi.intel.com>
On Fri, Jan 17, 2020 at 2:57 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
>
> I have just sent a series where first patch made to be fix and the rest is
> some clean ups.
>
> It would be nice if you can test first patch and series as a whole and
> give your Tested-by tags.
Sure Andy, thanks for the series! I'll give it a try next week and let you know.
Cheers,
Guilherme
^ permalink raw reply
* [PATCH v1 7/8] ASoC: Intel: Switch DMI table match to a test of variable
From: Andy Shevchenko @ 2020-01-17 17:56 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, Alessandro Zummo, Alexandre Belloni, linux-rtc,
Guilherme G . Piccoli, linux-kernel
Cc: Andy Shevchenko, Cezary Rojewski, Pierre-Louis Bossart,
Liam Girdwood, Jie Yang, Mark Brown, alsa-devel
In-Reply-To: <20200117175626.56358-1-andriy.shevchenko@linux.intel.com>
Since we have a common x86 quirk that provides an exported variable,
use it instead of local DMI table match.
Cc: Cezary Rojewski <cezary.rojewski@intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Cc: Jie Yang <yang.jie@linux.intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
.../intel/common/soc-acpi-intel-cht-match.c | 28 ++-----------------
1 file changed, 3 insertions(+), 25 deletions(-)
diff --git a/sound/soc/intel/common/soc-acpi-intel-cht-match.c b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
index d0fb43c2b9f6..833d2e130e6e 100644
--- a/sound/soc/intel/common/soc-acpi-intel-cht-match.c
+++ b/sound/soc/intel/common/soc-acpi-intel-cht-match.c
@@ -5,31 +5,11 @@
* Copyright (c) 2017, Intel Corporation.
*/
-#include <linux/dmi.h>
+#include <linux/platform_data/x86/machine.h>
+
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
-static unsigned long cht_machine_id;
-
-#define CHT_SURFACE_MACH 1
-
-static int cht_surface_quirk_cb(const struct dmi_system_id *id)
-{
- cht_machine_id = CHT_SURFACE_MACH;
- return 1;
-}
-
-static const struct dmi_system_id cht_table[] = {
- {
- .callback = cht_surface_quirk_cb,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
- },
- },
- { }
-};
-
static struct snd_soc_acpi_mach cht_surface_mach = {
.id = "10EC5640",
.drv_name = "cht-bsw-rt5645",
@@ -43,9 +23,7 @@ static struct snd_soc_acpi_mach *cht_quirk(void *arg)
{
struct snd_soc_acpi_mach *mach = arg;
- dmi_check_system(cht_table);
-
- if (cht_machine_id == CHT_SURFACE_MACH)
+ if (x86_microsoft_surface_3_machine)
return &cht_surface_mach;
else
return mach;
--
2.24.1
^ permalink raw reply related
* Re: [PATCH] rtc: cmos: Don't enable shared interrupts if using HPET-based IRQ handler
From: Andy Shevchenko @ 2020-01-17 17:57 UTC (permalink / raw)
To: Guilherme Piccoli
Cc: Thomas Gleixner, a.zummo, alexandre.belloni, linux-rtc,
Guilherme G. Piccoli
In-Reply-To: <CAHD1Q_y+9fK_CcmE7VF1XrATQA-Ru9O9=9XyGNvzxwu=Z-q9yQ@mail.gmail.com>
On Fri, Jan 17, 2020 at 11:57:08AM -0300, Guilherme Piccoli wrote:
> On Fri, Jan 17, 2020 at 11:42 AM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> > Let me come out with something such as Thomas suggested.
> >
>
> Thank you Andy! In case it's gonna take a while (like more than 1
> kernel release), could we get this one accepted to mitigate the issue
> meanwhile?
I have just sent a series where first patch made to be fix and the rest is
some clean ups.
It would be nice if you can test first patch and series as a whole and
give your Tested-by tags.
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply
* [PATCH v1 3/8] x86/quirks: Add missed include to satisfy static checker
From: Andy Shevchenko @ 2020-01-17 17:56 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, Alessandro Zummo, Alexandre Belloni, linux-rtc,
Guilherme G . Piccoli, linux-kernel
Cc: Andy Shevchenko
In-Reply-To: <20200117175626.56358-1-andriy.shevchenko@linux.intel.com>
Static checker is not happy with
.../kernel/quirks.c:666:6: warning: symbol 'x86_apple_machine' was not declared. Should it be static?
This is due to missed inclusion. Add it to satisfy the static checker.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
arch/x86/kernel/quirks.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 1daf8f2aa21f..5b96654aacc0 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -4,6 +4,7 @@
*/
#include <linux/dmi.h>
#include <linux/pci.h>
+#include <linux/platform_data/x86/machine.h>
#include <linux/irq.h>
#include <asm/hpet.h>
--
2.24.1
^ permalink raw reply related
* [PATCH v1 4/8] x86/quirks: Convert DMI matching to use a table
From: Andy Shevchenko @ 2020-01-17 17:56 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, Alessandro Zummo, Alexandre Belloni, linux-rtc,
Guilherme G . Piccoli, linux-kernel
Cc: Andy Shevchenko
In-Reply-To: <20200117175626.56358-1-andriy.shevchenko@linux.intel.com>
In order to extend the DMI based quirks, convert them to a table.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
arch/x86/kernel/quirks.c | 27 +++++++++++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 5b96654aacc0..447d4fba8516 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -667,8 +667,31 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2083, quirk_intel_purley_xeon_ras
bool x86_apple_machine;
EXPORT_SYMBOL(x86_apple_machine);
+static int apple_machine_cb(const struct dmi_system_id *id)
+{
+ x86_apple_machine = true;
+ return 1;
+}
+
+static const struct dmi_system_id x86_machine_table[] = {
+ {
+ .ident = "x86 Apple Macintosh",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ },
+ .callback = apple_machine_cb,
+ },
+ {
+ .ident = "x86 Apple Macintosh",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
+ },
+ .callback = apple_machine_cb,
+ },
+ {}
+};
+
void __init early_platform_quirks(void)
{
- x86_apple_machine = dmi_match(DMI_SYS_VENDOR, "Apple Inc.") ||
- dmi_match(DMI_SYS_VENDOR, "Apple Computer, Inc.");
+ dmi_check_system(x86_machine_table);
}
--
2.24.1
^ permalink raw reply related
* [PATCH v1 2/8] x86/platform: Rename x86/apple.h -> x86/machine.h
From: Andy Shevchenko @ 2020-01-17 17:56 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, Alessandro Zummo, Alexandre Belloni, linux-rtc,
Guilherme G . Piccoli, linux-kernel
Cc: Andy Shevchenko
In-Reply-To: <20200117175626.56358-1-andriy.shevchenko@linux.intel.com>
Rename linux/platform_data/x86/apple.h to linux/platform_data/x86/machine.h
in order to add new quirks later on. For sake of being less intrusive,
leave former file that includes a latter one.
While here, add include to linux/types.h due to bool type in use.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
include/linux/platform_data/x86/apple.h | 14 +-------------
include/linux/platform_data/x86/machine.h | 15 +++++++++++++++
2 files changed, 16 insertions(+), 13 deletions(-)
create mode 100644 include/linux/platform_data/x86/machine.h
diff --git a/include/linux/platform_data/x86/apple.h b/include/linux/platform_data/x86/apple.h
index 079e816c3c21..1fd0af6ffea9 100644
--- a/include/linux/platform_data/x86/apple.h
+++ b/include/linux/platform_data/x86/apple.h
@@ -1,13 +1 @@
-#ifndef PLATFORM_DATA_X86_APPLE_H
-#define PLATFORM_DATA_X86_APPLE_H
-
-#ifdef CONFIG_X86
-/**
- * x86_apple_machine - whether the machine is an x86 Apple Macintosh
- */
-extern bool x86_apple_machine;
-#else
-#define x86_apple_machine false
-#endif
-
-#endif
+#include <linux/platform_data/x86/machine.h>
diff --git a/include/linux/platform_data/x86/machine.h b/include/linux/platform_data/x86/machine.h
new file mode 100644
index 000000000000..b1e7a560a046
--- /dev/null
+++ b/include/linux/platform_data/x86/machine.h
@@ -0,0 +1,15 @@
+#ifndef PLATFORM_DATA_X86_MACHINE_H
+#define PLATFORM_DATA_X86_MACHINE_H
+
+#include <linux/types.h>
+
+#ifdef CONFIG_X86
+/**
+ * x86_apple_machine - whether the machine is an x86 Apple Macintosh
+ */
+extern bool x86_apple_machine;
+#else
+#define x86_apple_machine false
+#endif
+
+#endif /* PLATFORM_DATA_X86_MACHINE_H */
--
2.24.1
^ permalink raw reply related
* [PATCH v1 8/8] rtc: cmos: Switch DMI table match to a test of variable
From: Andy Shevchenko @ 2020-01-17 17:56 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, Alessandro Zummo, Alexandre Belloni, linux-rtc,
Guilherme G . Piccoli, linux-kernel
Cc: Andy Shevchenko
In-Reply-To: <20200117175626.56358-1-andriy.shevchenko@linux.intel.com>
Since we have a common x86 quirk that provides an exported variable,
use it instead of local DMI table match.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/rtc/rtc-cmos.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 09b7cdda9f55..b8b67a98c47a 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -33,6 +33,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
+#include <linux/platform_data/x86/machine.h>
#include <linux/platform_device.h>
#include <linux/log2.h>
#include <linux/pm.h>
@@ -1219,16 +1220,6 @@ static void use_acpi_alarm_quirks(void)
static inline void use_acpi_alarm_quirks(void) { }
#endif
-static const struct dmi_system_id rtc_cmos_surface3_table[] = {
- {
- .ident = "Microsoft Surface 3",
- .matches = {
- DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
- },
- },
- {}
-};
-
/* Every ACPI platform has a mc146818 compatible "cmos rtc". Here we find
* its device node and pass extra config data. This helps its driver use
* capabilities that the now-obsolete mc146818 didn't have, and informs it
@@ -1243,7 +1234,7 @@ static void cmos_wake_setup(struct device *dev)
use_acpi_alarm_quirks();
- if (dmi_check_system(rtc_cmos_surface3_table))
+ if (x86_microsoft_surface_3_machine)
acpi_rtc_info.flags |= CMOS_RTC_FLAGS_SHARED_IRQ;
rtc_wake_setup(dev);
--
2.24.1
^ permalink raw reply related
* [PATCH v1 5/8] x86/quirks: Add a DMI quirk for Microsoft Surface 3
From: Andy Shevchenko @ 2020-01-17 17:56 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, H. Peter Anvin,
x86, Alessandro Zummo, Alexandre Belloni, linux-rtc,
Guilherme G . Piccoli, linux-kernel
Cc: Andy Shevchenko, Cezary Rojewski, Pierre-Louis Bossart,
Liam Girdwood, Jie Yang, Mark Brown, alsa-devel
In-Reply-To: <20200117175626.56358-1-andriy.shevchenko@linux.intel.com>
Add a DMI quirk for Microsoft Surface 3 which will be utilized by few drivers.
Cc: Cezary Rojewski <cezary.rojewski@intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Cc: Jie Yang <yang.jie@linux.intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
arch/x86/kernel/quirks.c | 16 ++++++++++++++++
include/linux/platform_data/x86/machine.h | 5 +++++
2 files changed, 21 insertions(+)
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 447d4fba8516..9574ef7eaa66 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -673,6 +673,15 @@ static int apple_machine_cb(const struct dmi_system_id *id)
return 1;
}
+bool x86_microsoft_surface_3_machine;
+EXPORT_SYMBOL(x86_microsoft_surface_3_machine);
+
+static int microsoft_surface_3_machine_cb(const struct dmi_system_id *id)
+{
+ x86_microsoft_surface_3_machine = true;
+ return 1;
+}
+
static const struct dmi_system_id x86_machine_table[] = {
{
.ident = "x86 Apple Macintosh",
@@ -688,6 +697,13 @@ static const struct dmi_system_id x86_machine_table[] = {
},
.callback = apple_machine_cb,
},
+ {
+ .ident = "Microsoft Surface 3",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
+ },
+ .callback = microsoft_surface_3_machine_cb,
+ },
{}
};
diff --git a/include/linux/platform_data/x86/machine.h b/include/linux/platform_data/x86/machine.h
index b1e7a560a046..9bdf5a06b490 100644
--- a/include/linux/platform_data/x86/machine.h
+++ b/include/linux/platform_data/x86/machine.h
@@ -8,8 +8,13 @@
* x86_apple_machine - whether the machine is an x86 Apple Macintosh
*/
extern bool x86_apple_machine;
+/**
+ * x86_microsoft_surface_3_machine - whether the machine is Microsoft Surface 3
+ */
+extern bool x86_microsoft_surface_3_machine;
#else
#define x86_apple_machine false
+#define x86_microsoft_surface_3_machine false
#endif
#endif /* PLATFORM_DATA_X86_MACHINE_H */
--
2.24.1
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