Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index af2b799..a670ae1 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -2,7 +2,7 @@
/*
* i2c.h - definitions for the Linux i2c bus interface
* Copyright (C) 1995-2000 Simon G. Vogl
- * Copyright (C) 2013-2019 Wolfram Sang <wsa@the-dreams.de>
+ * Copyright (C) 2013-2019 Wolfram Sang <wsa@kernel.org>
*
* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
* Frodo Looijaard <frodol@dds.nl>
@@ -39,6 +39,14 @@
typedef int (*i2c_slave_cb_t)(struct i2c_client *client,
enum i2c_slave_event event, u8 *val);
+/* I2C Frequency Modes */
+#define I2C_MAX_STANDARD_MODE_FREQ 100000
+#define I2C_MAX_FAST_MODE_FREQ 400000
+#define I2C_MAX_FAST_MODE_PLUS_FREQ 1000000
+#define I2C_MAX_TURBO_MODE_FREQ 1400000
+#define I2C_MAX_HIGH_SPEED_MODE_FREQ 3400000
+#define I2C_MAX_ULTRA_FAST_MODE_FREQ 5000000
+
struct module;
struct property_entry;
@@ -48,10 +56,10 @@
* on a bus (or read from them). Apart from two basic transfer functions to
* transmit one message at a time, a more complex version can be used to
* transmit an arbitrary number of messages without interruption.
- * @count must be be less than 64k since msg.len is u16.
+ * @count must be less than 64k since msg.len is u16.
*/
-extern int i2c_transfer_buffer_flags(const struct i2c_client *client,
- char *buf, int count, u16 flags);
+int i2c_transfer_buffer_flags(const struct i2c_client *client,
+ char *buf, int count, u16 flags);
/**
* i2c_master_recv - issue a single I2C message in master receive mode
@@ -115,11 +123,9 @@
/* Transfer num messages.
*/
-extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
- int num);
+int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
/* Unlocked flavor */
-extern int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
- int num);
+int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
/* This is the very generalized SMBus access routine. You probably do not
want to use this, though; one of the functions below may be much easier,
@@ -138,16 +144,14 @@
/* Now follow the 'nice' access routines. These also document the calling
conventions of i2c_smbus_xfer. */
-extern s32 i2c_smbus_read_byte(const struct i2c_client *client);
-extern s32 i2c_smbus_write_byte(const struct i2c_client *client, u8 value);
-extern s32 i2c_smbus_read_byte_data(const struct i2c_client *client,
- u8 command);
-extern s32 i2c_smbus_write_byte_data(const struct i2c_client *client,
- u8 command, u8 value);
-extern s32 i2c_smbus_read_word_data(const struct i2c_client *client,
- u8 command);
-extern s32 i2c_smbus_write_word_data(const struct i2c_client *client,
- u8 command, u16 value);
+s32 i2c_smbus_read_byte(const struct i2c_client *client);
+s32 i2c_smbus_write_byte(const struct i2c_client *client, u8 value);
+s32 i2c_smbus_read_byte_data(const struct i2c_client *client, u8 command);
+s32 i2c_smbus_write_byte_data(const struct i2c_client *client,
+ u8 command, u8 value);
+s32 i2c_smbus_read_word_data(const struct i2c_client *client, u8 command);
+s32 i2c_smbus_write_word_data(const struct i2c_client *client,
+ u8 command, u16 value);
static inline s32
i2c_smbus_read_word_swapped(const struct i2c_client *client, u8 command)
@@ -165,19 +169,18 @@
}
/* Returns the number of read bytes */
-extern s32 i2c_smbus_read_block_data(const struct i2c_client *client,
- u8 command, u8 *values);
-extern s32 i2c_smbus_write_block_data(const struct i2c_client *client,
- u8 command, u8 length, const u8 *values);
+s32 i2c_smbus_read_block_data(const struct i2c_client *client,
+ u8 command, u8 *values);
+s32 i2c_smbus_write_block_data(const struct i2c_client *client,
+ u8 command, u8 length, const u8 *values);
/* Returns the number of read bytes */
-extern s32 i2c_smbus_read_i2c_block_data(const struct i2c_client *client,
- u8 command, u8 length, u8 *values);
-extern s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client,
- u8 command, u8 length,
- const u8 *values);
-extern s32
-i2c_smbus_read_i2c_block_data_or_emulated(const struct i2c_client *client,
- u8 command, u8 length, u8 *values);
+s32 i2c_smbus_read_i2c_block_data(const struct i2c_client *client,
+ u8 command, u8 length, u8 *values);
+s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client,
+ u8 command, u8 length, const u8 *values);
+s32 i2c_smbus_read_i2c_block_data_or_emulated(const struct i2c_client *client,
+ u8 command, u8 length,
+ u8 *values);
int i2c_get_device_id(const struct i2c_client *client,
struct i2c_device_identity *id);
#endif /* I2C */
@@ -228,7 +231,6 @@
* @detect: Callback for device detection
* @address_list: The I2C addresses to probe (for detect)
* @clients: List of detected clients we created (for i2c-core use only)
- * @disable_i2c_core_irq_mapping: Tell the i2c-core to not do irq-mapping
*
* The driver.owner field should be set to the module owner of this driver.
* The driver.name field should be set to the name of this driver.
@@ -287,8 +289,6 @@
int (*detect)(struct i2c_client *client, struct i2c_board_info *info);
const unsigned short *address_list;
struct list_head clients;
-
- bool disable_i2c_core_irq_mapping;
};
#define to_i2c_driver(d) container_of(d, struct i2c_driver, driver)
@@ -300,6 +300,7 @@
* generic enough to hide second-sourcing and compatible revisions.
* @adapter: manages the bus segment hosting this I2C device
* @dev: Driver model device node for the slave.
+ * @init_irq: IRQ that was set at initialization
* @irq: indicates the IRQ generated by this device (if any)
* @detected: member of an i2c_driver.clients list or i2c-core's
* userspace_devices list
@@ -336,25 +337,25 @@
};
#define to_i2c_client(d) container_of(d, struct i2c_client, dev)
-extern struct i2c_client *i2c_verify_client(struct device *dev);
-extern struct i2c_adapter *i2c_verify_adapter(struct device *dev);
-extern const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
- const struct i2c_client *client);
+struct i2c_client *i2c_verify_client(struct device *dev);
+struct i2c_adapter *i2c_verify_adapter(struct device *dev);
+const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
+ const struct i2c_client *client);
static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
{
- struct device * const dev = container_of(kobj, struct device, kobj);
+ struct device * const dev = kobj_to_dev(kobj);
return to_i2c_client(dev);
}
-static inline void *i2c_get_clientdata(const struct i2c_client *dev)
+static inline void *i2c_get_clientdata(const struct i2c_client *client)
{
- return dev_get_drvdata(&dev->dev);
+ return dev_get_drvdata(&client->dev);
}
-static inline void i2c_set_clientdata(struct i2c_client *dev, void *data)
+static inline void i2c_set_clientdata(struct i2c_client *client, void *data)
{
- dev_set_drvdata(&dev->dev, data);
+ dev_set_drvdata(&client->dev, data);
}
/* I2C slave support */
@@ -368,9 +369,9 @@
I2C_SLAVE_STOP,
};
-extern int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb);
-extern int i2c_slave_unregister(struct i2c_client *client);
-extern bool i2c_detect_slave_mode(struct device *dev);
+int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb);
+int i2c_slave_unregister(struct i2c_client *client);
+bool i2c_detect_slave_mode(struct device *dev);
static inline int i2c_slave_event(struct i2c_client *client,
enum i2c_slave_event event, u8 *val)
@@ -404,7 +405,7 @@
* that are present. This information is used to grow the driver model tree.
* For mainboards this is done statically using i2c_register_board_info();
* bus numbers identify adapters that aren't yet available. For add-on boards,
- * i2c_new_device() does this dynamically with the adapter already known.
+ * i2c_new_client_device() does this dynamically with the adapter already known.
*/
struct i2c_board_info {
char type[I2C_NAME_SIZE];
@@ -435,14 +436,12 @@
#if IS_ENABLED(CONFIG_I2C)
-/* Add-on boards should register/unregister their devices; e.g. a board
+/*
+ * Add-on boards should register/unregister their devices; e.g. a board
* with integrated I2C, a config eeprom, sensors, and a codec that's
* used in conjunction with the primary hardware.
*/
-extern struct i2c_client *
-i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info);
-
-extern struct i2c_client *
+struct i2c_client *
i2c_new_client_device(struct i2c_adapter *adap, struct i2c_board_info const *info);
/* If you don't know the exact address of an I2C device, use this variant
@@ -451,33 +450,27 @@
* it must return 1 on successful probe, 0 otherwise. If it is not provided,
* a default probing method is used.
*/
-extern struct i2c_client *
-i2c_new_probed_device(struct i2c_adapter *adap,
- struct i2c_board_info *info,
- unsigned short const *addr_list,
- int (*probe)(struct i2c_adapter *adap, unsigned short addr));
+struct i2c_client *
+i2c_new_scanned_device(struct i2c_adapter *adap,
+ struct i2c_board_info *info,
+ unsigned short const *addr_list,
+ int (*probe)(struct i2c_adapter *adap, unsigned short addr));
/* Common custom probe functions */
-extern int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr);
+int i2c_probe_func_quick_read(struct i2c_adapter *adap, unsigned short addr);
-/* For devices that use several addresses, use i2c_new_dummy() to make
- * client handles for the extra addresses.
- */
-extern struct i2c_client *
-i2c_new_dummy(struct i2c_adapter *adap, u16 address);
-
-extern struct i2c_client *
+struct i2c_client *
i2c_new_dummy_device(struct i2c_adapter *adapter, u16 address);
-extern struct i2c_client *
+struct i2c_client *
devm_i2c_new_dummy_device(struct device *dev, struct i2c_adapter *adap, u16 address);
-extern struct i2c_client *
+struct i2c_client *
i2c_new_ancillary_device(struct i2c_client *client,
- const char *name,
- u16 default_addr);
+ const char *name,
+ u16 default_addr);
-extern void i2c_unregister_device(struct i2c_client *client);
+void i2c_unregister_device(struct i2c_client *client);
#endif /* I2C */
/* Mainboard arch_initcall() code should register all its I2C devices.
@@ -485,7 +478,7 @@
* Modules for add-on boards must use other calls.
*/
#ifdef CONFIG_I2C_BOARDINFO
-extern int
+int
i2c_register_board_info(int busnum, struct i2c_board_info const *info,
unsigned n);
#else
@@ -510,7 +503,7 @@
* @smbus_xfer_atomic: same as @smbus_xfer. Yet, only using atomic context
* so e.g. PMICs can be accessed very late before shutdown. Optional.
* @functionality: Return the flags that this algorithm/adapter pair supports
- * from the I2C_FUNC_* flags.
+ * from the ``I2C_FUNC_*`` flags.
* @reg_slave: Register given client to I2C slave mode of this adapter
* @unreg_slave: Unregister given client from I2C slave mode of this adapter
*
@@ -519,7 +512,7 @@
* be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584
* to name two of the most common.
*
- * The return codes from the @master_xfer{_atomic} fields should indicate the
+ * The return codes from the ``master_xfer{_atomic}`` fields should indicate the
* type of error code that occurred during the transfer, as documented in the
* Kernel Documentation file Documentation/i2c/fault-codes.rst.
*/
@@ -575,6 +568,10 @@
* @scl_int_delay_ns: time IP core additionally needs to setup SCL in ns
* @sda_fall_ns: time SDA signal takes to fall in ns; t(f) in the I2C specification
* @sda_hold_ns: time IP core additionally needs to hold SDA in ns
+ * @digital_filter_width_ns: width in ns of spikes on i2c lines that the IP core
+ * digital filter can filter out
+ * @analog_filter_cutoff_freq_hz: threshold frequency for the low pass IP core
+ * analog filter
*/
struct i2c_timings {
u32 bus_freq_hz;
@@ -583,6 +580,8 @@
u32 scl_int_delay_ns;
u32 sda_fall_ns;
u32 sda_hold_ns;
+ u32 digital_filter_width_ns;
+ u32 analog_filter_cutoff_freq_hz;
};
/**
@@ -607,6 +606,14 @@
* may configure padmux here for SDA/SCL line or something else they want.
* @scl_gpiod: gpiod of the SCL line. Only required for GPIO recovery.
* @sda_gpiod: gpiod of the SDA line. Only required for GPIO recovery.
+ * @pinctrl: pinctrl used by GPIO recovery to change the state of the I2C pins.
+ * Optional.
+ * @pins_default: default pinctrl state of SCL/SDA lines, when they are assigned
+ * to the I2C bus. Optional. Populated internally for GPIO recovery, if
+ * state with the name PINCTRL_STATE_DEFAULT is found and pinctrl is valid.
+ * @pins_gpio: recovery pinctrl state of SCL/SDA lines, when they are used as
+ * GPIOs. Optional. Populated internally for GPIO recovery, if this state
+ * is called "gpio" or "recovery" and pinctrl is valid.
*/
struct i2c_bus_recovery_info {
int (*recover_bus)(struct i2c_adapter *adap);
@@ -623,6 +630,9 @@
/* gpio recovery */
struct gpio_desc *scl_gpiod;
struct gpio_desc *sda_gpiod;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *pins_default;
+ struct pinctrl_state *pins_gpio;
};
int i2c_recover_bus(struct i2c_adapter *adap);
@@ -835,28 +845,30 @@
/* administration...
*/
#if IS_ENABLED(CONFIG_I2C)
-extern int i2c_add_adapter(struct i2c_adapter *adap);
-extern void i2c_del_adapter(struct i2c_adapter *adap);
-extern int i2c_add_numbered_adapter(struct i2c_adapter *adap);
+int i2c_add_adapter(struct i2c_adapter *adap);
+void i2c_del_adapter(struct i2c_adapter *adap);
+int i2c_add_numbered_adapter(struct i2c_adapter *adap);
-extern int i2c_register_driver(struct module *owner, struct i2c_driver *driver);
-extern void i2c_del_driver(struct i2c_driver *driver);
+int i2c_register_driver(struct module *owner, struct i2c_driver *driver);
+void i2c_del_driver(struct i2c_driver *driver);
/* use a define to avoid include chaining to get THIS_MODULE */
#define i2c_add_driver(driver) \
i2c_register_driver(THIS_MODULE, driver)
-extern struct i2c_client *i2c_use_client(struct i2c_client *client);
-extern void i2c_release_client(struct i2c_client *client);
+static inline bool i2c_client_has_driver(struct i2c_client *client)
+{
+ return !IS_ERR_OR_NULL(client) && client->dev.driver;
+}
/* call the i2c_client->command() of all attached clients with
* the given arguments */
-extern void i2c_clients_command(struct i2c_adapter *adap,
- unsigned int cmd, void *arg);
+void i2c_clients_command(struct i2c_adapter *adap,
+ unsigned int cmd, void *arg);
-extern struct i2c_adapter *i2c_get_adapter(int nr);
-extern void i2c_put_adapter(struct i2c_adapter *adap);
-extern unsigned int i2c_adapter_depth(struct i2c_adapter *adapter);
+struct i2c_adapter *i2c_get_adapter(int nr);
+void i2c_put_adapter(struct i2c_adapter *adap);
+unsigned int i2c_adapter_depth(struct i2c_adapter *adapter);
void i2c_parse_fw_timings(struct device *dev, struct i2c_timings *t, bool use_defaults);
@@ -928,15 +940,15 @@
#if IS_ENABLED(CONFIG_OF)
/* must call put_device() when done with returned i2c_client device */
-extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
+struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
/* must call put_device() when done with returned i2c_adapter device */
-extern struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node);
+struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node);
/* must call i2c_put_adapter() when done with returned i2c_adapter device */
struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node *node);
-extern const struct of_device_id
+const struct of_device_id
*i2c_of_match_device(const struct of_device_id *matches,
struct i2c_client *client);
@@ -999,7 +1011,7 @@
static inline struct i2c_client *i2c_acpi_new_device(struct device *dev,
int index, struct i2c_board_info *info)
{
- return NULL;
+ return ERR_PTR(-ENODEV);
}
static inline struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle)
{