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/linux/drivers/leds/flash/
H A Dleds-as3645a.c3 * drivers/leds/leds-as3645a.c - AS3645A and LM3555 flash controllers driver
16 #include <linux/led-class-flash.h>
23 #include <media/v4l2-flash-led-class.h>
156 static int as3645a_write(struct as3645a *flash, u8 addr, u8 val) in as3645a_write() argument
158 struct i2c_client *client = flash->client; in as3645a_write()
170 static int as3645a_read(struct as3645a *flash, u8 addr) in as3645a_read() argument
172 struct i2c_client *client = flash->client; in as3645a_read()
188 * as3645a_set_current - Set flash configuration registers
189 * @flash: The flash
191 * Configure the hardware with flash, assist and indicator currents, as well as
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H A DKconfig15 tristate "AS3645A and LM3555 LED flash controllers support"
19 Enable LED flash class support for AS3645A LED flash
20 controller. V4L2 flash API is provided as well if
24 tristate "LED support for Kinetic KTD2692 flash LED controller"
29 This option enables support for Kinetic KTD2692 LED flash connected
40 of flash, torch and indicator classes.
43 tristate "LED support for MAX77693 Flash"
48 This option enables support for the flash part of the MAX77693
49 multifunction device. It has build in control for two leds in flash
60 This option enables support for dual Flash LED drivers found on
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H A Dleds-rt4505.c6 #include <linux/led-class-flash.h>
11 #include <media/v4l2-flash-led-class.h>
48 struct led_classdev_flash flash; member
56 container_of(lcdev, struct rt4505_priv, flash.led_cdev); in rt4505_torch_brightness_set()
84 container_of(lcdev, struct rt4505_priv, flash.led_cdev); in rt4505_torch_brightness_get()
120 container_of(fled_cdev, struct rt4505_priv, flash); in rt4505_flash_brightness_set()
137 container_of(fled_cdev, struct rt4505_priv, flash); in rt4505_flash_strobe_set()
153 container_of(fled_cdev, struct rt4505_priv, flash); in rt4505_flash_strobe_get()
174 container_of(fled_cdev, struct rt4505_priv, flash); in rt4505_flash_timeout_set()
190 container_of(fled_cdev, struct rt4505_priv, flash); in rt4505_fault_get()
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H A Dleds-mt6370-flash.c15 #include <linux/led-class-flash.h>
22 #include <media/v4l2-flash-led-class.h>
71 struct led_classdev_flash flash; member
89 struct mt6370_led *led = to_mt6370_led(lcdev, flash.led_cdev); in mt6370_torch_brightness_set()
101 * There is only one set of flash control logic, and this flag is used to check if 'strobe' in mt6370_torch_brightness_set()
124 * There're two flash channels in MT6370. If joint flash output is used, in mt6370_torch_brightness_set()
157 * Because of the current spikes when turning on the flash, the brightness should be kept in mt6370_flash_brightness_set()
166 struct mt6370_led *led = to_mt6370_led(fl_cdev, flash); in _mt6370_flash_brightness_set()
176 * There're two flash channels in MT6370. If joint flash output is used, storbe in _mt6370_flash_brightness_set()
197 struct mt6370_led *led = to_mt6370_led(fl_cdev, flash); in mt6370_strobe_set()
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/linux/drivers/media/i2c/
H A Dadp1653.c38 static int adp1653_update_hw(struct adp1653_flash *flash) in adp1653_update_hw() argument
40 struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); in adp1653_update_hw()
46 flash->indicator_intensity->val) in adp1653_update_hw()
49 switch (flash->led_mode->val) { in adp1653_update_hw()
53 /* Flash mode, light on with strobe, duration from timer */ in adp1653_update_hw()
55 config |= TIMEOUT_US_TO_CODE(flash->flash_timeout->val) in adp1653_update_hw()
61 flash->torch_intensity->val) in adp1653_update_hw()
77 static int adp1653_get_fault(struct adp1653_flash *flash) in adp1653_get_fault() argument
79 struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); in adp1653_get_fault()
87 flash->fault |= fault; in adp1653_get_fault()
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H A Dlm3646.c4 * General device driver for TI lm3646, Dual FLASH LED Driver
81 static int lm3646_mode_ctrl(struct lm3646_flash *flash, in lm3646_mode_ctrl() argument
86 return regmap_write(flash->regmap, in lm3646_mode_ctrl()
87 REG_ENABLE, flash->mode_reg | MODE_SHDN); in lm3646_mode_ctrl()
89 return regmap_write(flash->regmap, in lm3646_mode_ctrl()
90 REG_ENABLE, flash->mode_reg | MODE_TORCH); in lm3646_mode_ctrl()
92 return regmap_write(flash->regmap, in lm3646_mode_ctrl()
93 REG_ENABLE, flash->mode_reg | MODE_FLASH); in lm3646_mode_ctrl()
101 struct lm3646_flash *flash = to_lm3646_flash(ctrl); in lm3646_get_ctrl() local
108 rval = regmap_read(flash->regmap, REG_FLAG, &reg_val); in lm3646_get_ctrl()
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H A Dlm3560.c4 * General device driver for TI lm3559, lm3560, FLASH LED Driver
68 static int lm3560_mode_ctrl(struct lm3560_flash *flash) in lm3560_mode_ctrl() argument
72 switch (flash->led_mode) { in lm3560_mode_ctrl()
74 rval = regmap_update_bits(flash->regmap, in lm3560_mode_ctrl()
78 rval = regmap_update_bits(flash->regmap, in lm3560_mode_ctrl()
82 rval = regmap_update_bits(flash->regmap, in lm3560_mode_ctrl()
90 static int lm3560_enable_ctrl(struct lm3560_flash *flash, in lm3560_enable_ctrl() argument
97 rval = regmap_update_bits(flash->regmap, in lm3560_enable_ctrl()
100 rval = regmap_update_bits(flash->regmap, in lm3560_enable_ctrl()
104 rval = regmap_update_bits(flash->regmap, in lm3560_enable_ctrl()
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/linux/Documentation/userspace-api/media/v4l/
H A Dext-ctrls-flash.rst6 Flash Control Reference
9 The V4L2 flash controls are intended to provide generic access to flash
10 controller devices. Flash controller devices are typically used in
13 The interface can support both LED and xenon flash devices. As of
14 writing this, there is no xenon flash driver using this interface.
23 Unsynchronised LED flash (software strobe)
26 Unsynchronised LED flash is controlled directly by the host as the
27 sensor. The flash must be enabled by the host before the exposure of the
29 for the timing of the flash.
34 Synchronised LED flash (hardware strobe)
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/linux/drivers/mtd/devices/
H A Dsst25l.c5 * Driver for SST25L SPI Flash chips
25 #include <linux/spi/flash.h>
67 static int sst25l_status(struct sst25l_flash *flash, int *status) in sst25l_status() argument
83 err = spi_sync(flash->spi, &m); in sst25l_status()
91 static int sst25l_write_enable(struct sst25l_flash *flash, int enable) in sst25l_write_enable() argument
97 err = spi_write(flash->spi, command, 1); in sst25l_write_enable()
102 err = spi_write(flash->spi, command, 1); in sst25l_write_enable()
108 err = spi_write(flash->spi, command, 2); in sst25l_write_enable()
113 err = sst25l_status(flash, &status); in sst25l_write_enable()
123 static int sst25l_wait_till_ready(struct sst25l_flash *flash) in sst25l_wait_till_ready() argument
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H A Dmchp23k256.c16 #include <linux/spi/flash.h>
41 static void mchp23k256_addr2cmd(struct mchp23k256_flash *flash, in mchp23k256_addr2cmd() argument
51 for (i = flash->caps->addr_width; i > 0; i--, addr >>= 8) in mchp23k256_addr2cmd()
55 static int mchp23k256_cmdsz(struct mchp23k256_flash *flash) in mchp23k256_cmdsz() argument
57 return 1 + flash->caps->addr_width; in mchp23k256_cmdsz()
63 struct mchp23k256_flash *flash = to_mchp23k256_flash(mtd); in mchp23k256_write() local
71 cmd_len = mchp23k256_cmdsz(flash); in mchp23k256_write()
74 mchp23k256_addr2cmd(flash, to, command); in mchp23k256_write()
84 mutex_lock(&flash->lock); in mchp23k256_write()
86 ret = spi_sync(flash->spi, &message); in mchp23k256_write()
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H A Dspear_smi.c2 * SMI (Serial Memory Controller) device driver for Serial NOR Flash on
90 /* flash opcodes */
93 /* Flash Device Ids maintenance section */
95 /* data structure to maintain flash ids from different vendors */
165 * @cmd_complete: queue to wait for command completion of NOR-flash.
167 * @flash: separate structure for each Serial NOR-flash attached to SMI.
178 struct spear_snor_flash *flash[MAX_NUM_FLASH_CHIP]; member
182 * struct spear_snor_flash - Structure for Serial NOR Flash
184 * @bank: Bank number(0, 1, 2, 3) for each NOR-flash.
185 * @dev_id: Device ID of NOR-flash.
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/linux/Documentation/ABI/testing/
H A Dsysfs-class-led-flash6 Set the brightness of this LED in the flash strobe mode, in
7 microamperes. The file is created only for the flash LED devices
8 that support setting flash brightness.
18 Maximum brightness level for this LED in the flash strobe mode,
26 Hardware timeout for flash, in microseconds. The flash strobe
28 of the strobe. The file is created only for the flash LED
29 devices that support setting flash timeout.
36 Maximum flash timeout for this LED, in microseconds.
43 Flash strobe state. When written with 1 it triggers flash strobe
44 and when written with 0 it turns the flash off.
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/linux/drivers/mtd/maps/
H A DKconfig7 bool "Support non-linear mappings of flash chips"
10 paged mappings of flash chips.
13 tristate "Flash device in physical memory map"
16 This provides a 'mapping' driver which allows the NOR Flash and
19 the physical address and size of the flash chips on your
38 hex "Physical start address of flash mapping"
42 This is the physical memory location at which the flash chips
48 hex "Physical length of flash mapping"
52 This is the total length of the mapping of the flash chips on
55 than the total amount of flash present. Refer to the memory
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/linux/include/linux/
H A Dled-class-flash.h3 * LED Flash class interface
34 /* set flash brightness */
37 /* get flash brightness */
40 /* set flash strobe state */
42 /* get flash strobe state */
44 /* set flash timeout */
46 /* get the flash LED fault */
51 * Current value of a flash setting along
69 /* flash led specific ops */
72 /* flash brightness value in microamperes along with its constraints */
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/linux/drivers/sbus/char/
H A Dflash.c2 /* flash.c: Allow mmap access to the OBP Flash, for OBP updates.
31 } flash; variable
40 if (flash.read_base == flash.write_base) { in flash_mmap()
41 addr = flash.read_base; in flash_mmap()
42 size = flash.read_size; in flash_mmap()
50 addr = flash.read_base; in flash_mmap()
51 size = flash.read_size; in flash_mmap()
53 addr = flash.write_base; in flash_mmap()
54 size = flash.write_size; in flash_mmap()
87 if (file->f_pos > flash.read_size) in flash_llseek()
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/linux/Documentation/leds/
H A Dleds-class-flash.rst2 Flash LED handling under Linux
5 Some LED devices provide two modes - torch and flash. In the LED subsystem
7 and LED Flash class respectively. The torch mode related features are enabled
8 by default and the flash ones only if a driver declares it by setting
11 In order to enable the support for flash LEDs CONFIG_LEDS_CLASS_FLASH symbol
12 must be defined in the kernel config. A LED Flash class driver must be
15 Following sysfs attributes are exposed for controlling flash LED devices:
16 (see Documentation/ABI/testing/sysfs-class-led-flash)
26 V4L2 flash wrapper for flash LEDs
37 flash device, e.g. an I2C device
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/linux/include/media/
H A Dv4l2-flash-led-class.h3 * V4L2 flash LED sub-device registration helpers.
21 * struct v4l2_flash_ctrl_data - flash control initialization data, filled
22 * basing on the features declared by the LED flash
25 * @cid: contains v4l2 flash control id if the config
34 * struct v4l2_flash_ops - V4L2 flash operations
36 * @external_strobe_set: Setup strobing the flash by hardware pin state
53 * struct v4l2_flash_config - V4L2 Flash sub-device initialization data
56 * @intensity: non-flash strobe constraints for the LED
57 * @flash_faults: bitmask of flash faults that the LED flash class
60 * <linux/led-class-flash.h>
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/linux/drivers/mtd/chips/
H A DKconfig2 menu "RAM/ROM/Flash chip drivers"
6 tristate "Detect flash chips by Common Flash Interface (CFI) probe"
10 The Common Flash Interface specification was developed by Intel,
11 AMD and other flash manufactures that provides a universal method
12 for probing the capabilities of flash devices. If you wish to
18 tristate "Detect non-CFI AMD/JEDEC-compatible flash chips"
22 This option enables JEDEC-style probing of flash chips which are not
23 compatible with the Common Flash Interface, but will use the common
24 CFI-targeted flash drivers for any chips which are identified which
33 bool "Flash chip driver advanced configuration options"
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/linux/Documentation/devicetree/bindings/mtd/
H A Dmtd-physmap.yaml7 title: CFI or JEDEC memory-mapped NOR flash, MTD-RAM (NVRAM...)
13 Flash chips (Memory Technology Devices) are often used for solid state
29 - arm,versatile-flash
30 - arm,vexpress-flash
31 - cortina,gemini-flash
34 - ge,imp3a-paged-flash
36 - gef,ppc9a-paged-flash
38 - gef,sbc310-paged-flash
40 - gef,sbc610-paged-flash
43 - intel,ixp4xx-flash
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/linux/Documentation/driver-api/mtd/
H A Dspi-nor.rst5 How to propose a new flash addition
9 Serial Flash Discoverable Parameter (SFDP) standard. SFDP describes
10 the functional and feature capabilities of serial flash devices in a
14 flash's parameters and settings. If the flash defines the SFDP tables
15 it's likely that you won't need a flash entry at all, and instead
16 rely on the generic flash driver which probes the flash solely based
20 There are cases however where you need to define an explicit flash
21 entry. This typically happens when the flash has settings or support
23 when the flash contains mangled SFDP data. If the later, one needs
33 1) Specify the controller that you used to test the flash and specify
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/linux/drivers/net/ethernet/brocade/bna/
H A Dbfa_ioc.c1424 BFA_FLASH_NOT_PRESENT = -1, /*!< flash not present */
1425 BFA_FLASH_UNINIT = -2, /*!< flash not initialized */
1426 BFA_FLASH_BAD = -3, /*!< flash bad */
1427 BFA_FLASH_BUSY = -4, /*!< flash busy */
1435 /* flash command register data structure */
1457 /* flash device status register data structure */
1481 /* flash address register data structure */
1495 /* Flash raw private functions */
1563 /* Read flash status. */
1601 /* Start flash read operation. */
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/linux/arch/powerpc/kernel/
H A Drtas_flash.c9 * firmware image and flash it as it reboots (see rtas.c).
34 /* Flash image status values */
37 #define FLASH_IMG_SHORT -1005 /* Flash image shorter than expected */
38 #define FLASH_IMG_BAD_LEN -1004 /* Bad length value in flash list block */
39 #define FLASH_IMG_NULL_DATA -1003 /* Bad data value in flash list block */
40 #define FLASH_IMG_READY 0 /* Firmware img ready for flash on reboot */
57 /* ibm,validate-flash-image update result tokens */
82 /* ibm,manage-flash-image operation tokens */
101 * that needed by the rtas flash update.
121 * Local copy of the flash block list.
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/linux/drivers/mtd/
H A DKconfig5 Memory Technology Devices are flash, RAM and similar chips, often
43 Although most flash chips have an erase size too large to be useful
53 on flash chips to emulate a smaller block size. Needless to say,
76 tristate "FTL (Flash Translation Layer) support"
80 This provides support for the original Flash Translation Layer which
82 file system on a flash device to emulate a block device with
93 tristate "NFTL (NAND Flash Translation Layer) support"
97 This provides support for the NAND Flash Translation Layer which is
99 file system on a flash device to emulate a block device with
113 Support for writing to the NAND Flash Translation Layer, as used
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/linux/Documentation/networking/devlink/
H A Ddevlink-flash.rst6 Devlink Flash
9 The ``devlink-flash`` API allows updating device firmware. It replaces the
10 older ``ethtool-flash`` mechanism, and doesn't require taking any
11 networking locks in the kernel to perform the flash update. Example use::
13 $ devlink dev flash pci/0000:05:00.0 file flash-boot.bin
22 The ``devlink-flash`` command allows optionally specifying a mask indicating
23 how the device should handle subsections of flash components when updating.
51 memory on the board, e.g. flash. Some devices store only basic firmware on
57 disk, or automatically flash a new image from disk. The ``fw_load_policy``
66 Drivers are expected to implement ``devlink-flash`` and ``devlink-info``
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/linux/Documentation/devicetree/bindings/leds/
H A Dkinetic,ktd2692.yaml7 title: KTD2692 Flash LED Driver from Kinetic Technologies
13 KTD2692 is the ideal power solution for high-power flash LEDs.
17 enable/disable the IC, Movie(max 1/3 of Flash current) / Flash mode current,
18 Flash timeout, LVP(low voltage protection).
21 LED current will be ramped up to the flash-mode current level.
45 flash-max-timeout-us:
46 description: Flash LED maximum timeout.
53 flash-max-microamp:
55 description: Flash LED maximum current
81 flash-max-timeout-us = <250000>;
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