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/Linux-v5.10/drivers/leds/
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_config - 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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/Linux-v5.10/drivers/media/i2c/
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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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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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-v5.10/Documentation/userspace-api/media/v4l/
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-v5.10/drivers/staging/media/atomisp/i2c/
Datomisp-lm3554.c3 * LED flash driver for LM3554
82 static int lm3554_write(struct lm3554 *flash, u8 addr, u8 val) in lm3554_write() argument
84 struct i2c_client *client = v4l2_get_subdevdata(&flash->sd); in lm3554_write()
96 static int lm3554_read(struct lm3554 *flash, u8 addr) in lm3554_read() argument
98 struct i2c_client *client = v4l2_get_subdevdata(&flash->sd); in lm3554_read()
113 static int lm3554_set_mode(struct lm3554 *flash, unsigned int mode) in lm3554_set_mode() argument
119 (flash->flash_current << LM3554_FLASH_CURRENT_SHIFT); in lm3554_set_mode()
121 ret = lm3554_write(flash, LM3554_FLASH_BRIGHTNESS_REG, val); in lm3554_set_mode()
123 flash->mode = mode; in lm3554_set_mode()
127 static int lm3554_set_torch(struct lm3554 *flash) in lm3554_set_torch() argument
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/Linux-v5.10/Documentation/ABI/testing/
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-v5.10/drivers/mtd/maps/
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-v5.10/drivers/mtd/devices/
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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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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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-v5.10/include/linux/
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-v5.10/drivers/sbus/char/
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-v5.10/Documentation/leds/
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-v5.10/include/media/
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-v5.10/drivers/mtd/chips/
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-v5.10/Documentation/devicetree/bindings/leds/
Dleds-ktd2692.txt1 * Kinetic Technologies - KTD2692 Flash LED Driver
3 KTD2692 is the ideal power solution for high-power flash LEDs.
7 enable/disable the IC, Movie(max 1/3 of Flash current) / Flash mode current,
8 Flash timeout, LVP(low voltage protection).
11 LED current will be ramped up to the flash-mode current level.
25 Required properties for flash LED child nodes:
29 - flash-max-microamp : Flash LED maximum current
31 - flash-max-timeout-us : Flash LED maximum timeout.
33 Optional properties for flash LED child nodes:
44 flash-led {
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Dleds-aat1290.txt1 * Skyworks Solutions, Inc. AAT1290 Current Regulator for Flash LEDs
4 asserted high, enable flash strobe and movie mode (max 1/2 of flash current)
7 of the flash chip. The switch is controlled with pin control.
12 - flen-gpios : Must be device tree identifier of the flash device FL_EN pin.
13 - enset-gpios : Must be device tree identifier of the flash device EN_SET pin.
27 - flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
28 Maximum flash LED supply current can be calculated using
30 - flash-max-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
31 Maximum flash timeout can be calculated using following
60 flash-max-microamp = <1012500>;
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/Linux-v5.10/drivers/mtd/nand/raw/
DKconfig20 NAND flash devices. For further information see
35 comment "Raw/parallel NAND flash controllers"
45 Enable the driver for NAND flash on Intel Moorestown, using the
53 Enable the driver for NAND flash on platforms using a Denali NAND
61 Support for NAND flash on Amstrad E3 (Delta).
68 Support for NAND flash on Texas Instruments OMAP2, OMAP3, OMAP4
90 This enables the driver for the NAND flash controller on the
98 NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs
104 This enables the NAND flash controller on the S3C24xx and S3C64xx
131 Enables the NAND Flash controller on Tango chips.
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/Linux-v5.10/Documentation/devicetree/bindings/mtd/
Dmtd-physmap.txt1 CFI or JEDEC memory-mapped NOR flash, MTD-RAM (NVRAM...)
3 Flash chips (Memory Technology Devices) are often used for solid state
7 used, if known, followed by either "cfi-flash", "jedec-flash",
20 mapping of the flash.
24 By defining "no-unaligned-direct-access", the flash will not be
27 physmap-flash drivers as boot loader pass the mtd partition via the old
28 device name physmap-flash.
38 - vendor-id : Contains the flash chip's vendor id (1 byte).
39 - device-id : Contains the flash chip's device id (1 byte).
41 For ROM compatible devices (and ROM fallback from cfi-flash), the following
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Dintel,ixp4xx-flash.txt1 Flash device on Intel IXP4xx SoC
3 This flash is regular CFI compatible (Intel or AMD extended) flash chips with
7 - compatible : must be "intel,ixp4xx-flash", "cfi-flash";
8 - reg : memory address for the flash chip
9 - bank-width : width in bytes of flash interface, should be <2>
18 flash@50000000 {
19 compatible = "intel,ixp4xx-flash", "cfi-flash";
Darm-versatile.txt1 Flash device on ARM Versatile board
3 These flash chips are found in the ARM reference designs like Integrator,
6 They are regular CFI compatible (Intel or AMD extended) flash chips with
11 - compatible : must be "arm,versatile-flash", "cfi-flash";
12 - reg : memory address for the flash chip
13 - bank-width : width in bytes of flash interface.
22 flash@34000000 {
23 compatible = "arm,versatile-flash", "cfi-flash";
Dcortina,gemini-flash.txt1 Flash device on Cortina Systems Gemini SoC
3 This flash is regular CFI compatible (Intel or AMD extended) flash chips with
7 - compatible : must be "cortina,gemini-flash", "cfi-flash";
8 - reg : memory address for the flash chip
10 - bank-width : width in bytes of flash interface, should be <2>
19 flash@30000000 {
20 compatible = "cortina,gemini-flash", "cfi-flash";
/Linux-v5.10/arch/powerpc/kernel/
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-v5.10/drivers/mtd/
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
48 At the moment, it is also required for the Journalling Flash File
54 on flash chips to emulate a smaller block size. Needless to say,
74 tristate "FTL (Flash Translation Layer) support"
78 This provides support for the original Flash Translation Layer which
80 file system on a flash device to emulate a block device with
91 tristate "NFTL (NAND Flash Translation Layer) support"
95 This provides support for the NAND Flash Translation Layer which is
97 file system on a flash device to emulate a block device with
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