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/linux/Documentation/devicetree/bindings/power/supply/
H A Dsbs,sbs-battery.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/supply/sbs,sbs-battery.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
16 - $ref: power-supply.yaml#
21 - items:
22 - enum:
23 - ti,bq20z45
24 - ti,bq20z65
[all …]
/linux/drivers/mfd/
H A Dgateworks-gsc.c1 // SPDX-License-Identifier: GPL-2.0
3 * The Gateworks System Controller (GSC) is a multi-function
5 * The control interface is I2C, with an interrupt. The device supports
6 * system functions such as push-button monitoring, multiple ADC's for
13 #include <linux/i2c.h>
27 * ADC cycles the chip can NAK I2C transactions. To ensure we have reliable
35 int retry, ret; in gsc_write() local
37 for (retry = 0; retry < I2C_RETRIES; retry++) { in gsc_write()
40 * -EAGAIN returned when the i2c host controller is busy in gsc_write()
41 * -EIO returned when i2c device is busy in gsc_write()
[all …]
/linux/Documentation/devicetree/bindings/i2c/
H A Di2c-arb-gpio-challenge.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-arb-gpio-challenge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
10 - Doug Anderson <dianders@chromium.org>
11 - Peter Rosin <peda@axentia.se>
15 the master of an I2C bus in a multimaster situation.
18 standard I2C multi-master rules. Using GPIOs is generally useful in the case
23 * It is nonstandard (not using standard I2C multimaster)
[all …]
/linux/drivers/input/touchscreen/
H A Datmel_mxt_ts.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Copyright (C) 2011-2014 Atmel Corporation
20 #include <linux/i2c.h>
30 #include <media/v4l2-device.h>
31 #include <media/v4l2-ioctl.h>
32 #include <media/videobuf2-v4l2.h>
33 #include <media/videobuf2-vmalloc.h>
34 #include <dt-bindings/input/atmel-maxtouch.h>
367 return obj->size_minus_one + 1; in mxt_obj_size()
372 return obj->instances_minus_one + 1; in mxt_obj_instances()
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H A Drohm_bu21023.c1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/i2c.h>
37 * BU21023GUL/BU21023MUV/BU21024FV-M registers map
270 * rohm_i2c_burst_read - execute combined I2C message for ROHM BU21023/24
285 struct i2c_adapter *adap = client->adapter; in rohm_i2c_burst_read()
289 msg[0].addr = client->addr; in rohm_i2c_burst_read()
294 msg[1].addr = client->addr; in rohm_i2c_burst_read()
303 ret = -EIO; in rohm_i2c_burst_read()
315 struct i2c_client *client = ts->client; in rohm_ts_manual_calibration()
316 struct device *dev = &client->dev; in rohm_ts_manual_calibration()
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H A Dwdt87xx_i2c.c2 * Weida HiTech WDT87xx TouchScreen I2C driver
4 * Copyright (c) 2015 Weida Hi-Tech Co., Ltd.
12 #include <linux/i2c.h>
193 .addr = client->addr, in wdt87xx_i2c_xfer()
199 .addr = client->addr, in wdt87xx_i2c_xfer()
208 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); in wdt87xx_i2c_xfer()
210 error = ret < 0 ? ret : -EIO; in wdt87xx_i2c_xfer()
211 dev_err(&client->dev, "%s: i2c transfer failed: %d\n", in wdt87xx_i2c_xfer()
230 dev_err(&client->dev, "get desc failed: %d\n", error); in wdt87xx_get_desc()
235 dev_err(&client->dev, "unexpected response to get desc: %d\n", in wdt87xx_get_desc()
[all …]
H A Dimagis.c1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/i2c.h>
73 .addr = ts->client->addr, in imagis_i2c_read_reg()
78 .addr = ts->client->addr, in imagis_i2c_read_reg()
85 int retry = IST3038C_I2C_RETRY_COUNT; in imagis_i2c_read_reg() local
87 /* Retry in case the controller fails to respond */ in imagis_i2c_read_reg()
89 ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg)); in imagis_i2c_read_reg()
95 error = ret < 0 ? ret : -EIO; in imagis_i2c_read_reg()
96 dev_err(&ts->client->dev, in imagis_i2c_read_reg()
97 "%s - i2c_transfer failed: %d (%d)\n", in imagis_i2c_read_reg()
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H A Dhynitron_cstxxx.c1 // SPDX-License-Identifier: GPL-2.0-only
9 * are undocumented. This is essentially a cleaned-up version of the
11 * device-specific functions replated with generic functions wherever
18 #include <linux/i2c.h>
37 /* Data generic to all (supported and non-supported) controllers. */
76 gpiod_set_value_cansleep(ts_data->reset_gpio, 1); in hyn_reset_proc()
78 gpiod_set_value_cansleep(ts_data->reset_gpio, 0); in hyn_reset_proc()
88 ts_data->chip->report_touch(client); in hyn_interrupt_handler()
94 * The vendor driver would retry twice before failing to read or write
95 * to the i2c device.
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H A Draydium_i2c_ts.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Raydium touchscreen I2C driver.
5 * Copyright (C) 2012-2014, Raydium Semiconductor Corporation.
11 * Contact Raydium Semiconductor Corporation at www.rad-ic.com
18 #include <linux/i2c.h>
29 /* Slave I2C mode */
33 /* I2C bootoloader commands */
43 /* I2C main commands */
117 /* struct raydium_data - represents state of Raydium touchscreen device */
158 xfer_count -= xfer_start_idx; in raydium_i2c_xfer()
[all …]
/linux/arch/arm/boot/dts/
H A Dcros-ec-sbs.dtsi2 * Smart battery dts fragment for devices that use cros-ec-sbs
6 * This file is dual-licensed: you can use it either under the terms
46 battery: sbs-battery@b {
47 compatible = "sbs,sbs-battery";
49 sbs,i2c-retry-count = <2>;
50 sbs,poll-retry-count = <1>;
/linux/drivers/char/tpm/
H A Dtpm_i2c_atmel.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * ATMEL I2C TPM AT97SC3204T
9 * Device driver for ATMEL I2C TPMs.
11 * Teddy Reed determined the basic I2C command flow, unlike other I2C TPM
12 * devices the raw TCG formatted TPM command data is written via I2C and then
13 * raw TCG formatted TPM command data is returned via I2C.
22 #include <linux/i2c.h>
35 * fair number of read responses in the buffer so a 2nd retry can be
42 struct priv_data *priv = dev_get_drvdata(&chip->dev); in i2c_atmel_send()
43 struct i2c_client *client = to_i2c_client(chip->dev.parent); in i2c_atmel_send()
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H A Dtpm_i2c_infineon.c1 // SPDX-License-Identifier: GPL-2.0-only
13 * Infineon I2C Protocol Stack Specification v0.20.
18 #include <linux/i2c.h>
25 /* max. number of iterations after I2C NAK */
31 /* max. number of iterations after I2C NAK for 'long' commands
62 /* In addition to the data itself, the buffer must fit the 7-bit I2C
74 * iic_tpm_read() - read from TPM register
80 * buffer (little-endian format, i.e. first byte is put into buffer[0]).
82 * NOTE: TPM is big-endian for multi-byte values. Multi-byte
86 * provided by the i2c core as the TPM currently does not support the
[all …]
/linux/drivers/misc/eeprom/
H A Didt_89hpesx.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2016 T-Platforms. All Rights Reserved.
5 * IDT PCIe-switch NTB Linux driver
8 * Serge Semin <fancer.lancer@gmail.com>, <Sergey.Semin@t-platforms.ru>
11 * NOTE of the IDT 89HPESx SMBus-slave interface driver
13 * IDT PCIe-switches. IDT provides a simple SMBus interface to perform IO-
550 int ret, retry; idt_eeprom_read_byte() local
851 eeprom_write(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count) eeprom_write() argument
875 eeprom_read(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count) eeprom_read() argument
904 idt_dbgfs_csr_write(struct file * filep,const char __user * ubuf,size_t count,loff_t * offp) idt_dbgfs_csr_write() argument
991 idt_dbgfs_csr_read(struct file * filep,char __user * ubuf,size_t count,loff_t * offp) idt_dbgfs_csr_read() argument
[all...]
/linux/drivers/gpu/drm/display/
H A Ddrm_dp_helper.c27 #include <linux/i2c.h>
77 return link_status[r - DP_LANE0_1_STATUS]; in dp_link_status()
231 drm_dbg_kms(aux->drm_dev, "%s: invalid AUX interval 0x%02x (max 4)\n", in __8b10b_clock_recovery_delay_us()
232 aux->name, rd_interval); in __8b10b_clock_recovery_delay_us()
243 drm_dbg_kms(aux->drm_dev, "%s: invalid AUX interval 0x%02x (max 4)\n", in __8b10b_channel_eq_delay_us()
244 aux->name, rd_interval); in __8b10b_channel_eq_delay_us()
256 drm_dbg_kms(aux->drm_dev, "%s: invalid AUX interval 0x%02x\n", in __128b132b_channel_eq_delay_us()
257 aux->name, rd_interval); in __128b132b_channel_eq_delay_us()
279 * - Clock recovery vs. channel equalization
280 * - DPRX vs. LTTPR
[all …]
/linux/arch/powerpc/platforms/powermac/
H A Dlow_i2c.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2003-2005 Ben. Herrenschmidt (benh@kernel.crashing.org)
7 * The linux i2c layer isn't completely suitable for our needs for various
11 * This file thus provides a simple low level unified i2c interface for
12 * powermac that covers the various types of i2c busses used in Apple machines.
19 * as the interrupt is currently used by i2c-keywest. In the long run, we
20 * might want to get rid of those high-level interfaces to linux i2c layer
41 #include <linux/i2c.h>
107 * i2c-keywest */
182 name, __kw_state_names[host->state], isr); \
[all …]
/linux/drivers/misc/
H A Dapds9802als.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * apds9802als.c - apds9802 ALS Driver
14 #include <linux/i2c.h>
51 int retry = 10; in als_wait_for_data_ready() local
56 } while (!(ret & 0x80) && retry--); in als_wait_for_data_ready()
58 if (retry < 0) { in als_wait_for_data_ready()
60 return -ETIMEDOUT; in als_wait_for_data_ready()
76 mutex_lock(&data->mutex); in als_lux0_input_data_show()
97 mutex_unlock(&data->mutex); in als_lux0_input_data_show()
103 mutex_unlock(&data->mutex); in als_lux0_input_data_show()
[all …]
H A Dds1682.c1 // SPDX-License-Identifier: GPL-2.0-only
32 #include <linux/i2c.h>
35 #include <linux/nvmem-provider.h>
38 #include <linux/hwmon-sysfs.h>
64 dev_dbg(dev, "ds1682_show() called on %s\n", attr->attr.name); in ds1682_show()
67 rc = i2c_smbus_read_i2c_block_data(client, sattr->index, sattr->n in ds1682_show()
99 ds1682_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count) ds1682_store() argument
158 ds1682_eeprom_read(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count) ds1682_eeprom_read() argument
176 ds1682_eeprom_write(struct file * filp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count) ds1682_eeprom_write() argument
[all...]
/linux/drivers/nfc/pn544/
H A Di2c.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C Link Layer for PN544 HCI based Driver
10 #include <linux/crc-ccitt.h>
12 #include <linux/i2c.h>
51 MODULE_DEVICE_TABLE(i2c, pn544_hci_i2c_id_table);
132 #define PN544_FW_I2C_WRITE_DATA_MAX_LEN MIN((PN544_FW_I2C_MAX_PAYLOAD -\
136 #define PN544_FW_SECURE_CHUNK_WRITE_DATA_MAX_LEN (PN544_FW_I2C_MAX_PAYLOAD -\
174 * < 0 if hardware error occured (e.g. i2c err)
182 print_hex_dump(KERN_DEBUG, "i2c: ", DUMP_PREFIX_OFFSET, \
183 16, 1, (skb)->data, (skb)->len, 0); \
[all …]
/linux/sound/soc/codecs/aw88395/
H A Daw88395.c1 // SPDX-License-Identifier: GPL-2.0-only
3 // aw88395.c -- ALSA SoC AW88395 codec support
5 // Copyright (c) 2022-2023 AWINIC Technology CO., LTD
12 #include <linux/i2c.h>
24 .max_register = AW88395_REG_MAX - 1,
34 ret = aw88395_dev_start(aw88395->aw_pa); in aw88395_start_pa()
36 dev_err(aw88395->aw_pa->dev, "aw88395 device start failed. retry = %d", i); in aw88395_start_pa()
37 ret = aw88395_dev_fw_update(aw88395->aw_pa, AW88395_DSP_FW_UPDATE_ON, true); in aw88395_start_pa()
39 dev_err(aw88395->aw_pa->dev, "fw update failed"); in aw88395_start_pa()
43 dev_info(aw88395->aw_pa->dev, "start success\n"); in aw88395_start_pa()
[all …]
/linux/sound/pci/emu10k1/
H A Dio.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Lee Revell <rlrevell@joe-job.com>
5 * James Courtier-Dutton <James@superbug.co.uk>
23 if (snd_BUG_ON(reg & (emu->audigy ? (0xffff0000 & ~A_PTR_ADDRESS_MASK) in check_ptr_reg()
41 spin_lock_irqsave(&emu->emu_lock, flags); in snd_emu10k1_ptr_read()
42 outl(regptr, emu->port + PTR); in snd_emu10k1_ptr_read()
43 val = inl(emu->port + DATA); in snd_emu10k1_ptr_read()
44 spin_unlock_irqrestore(&emu->emu_lock, flags); in snd_emu10k1_ptr_read()
51 mask = (1 << size) - 1; in snd_emu10k1_ptr_read()
76 mask = (1 << size) - 1; in snd_emu10k1_ptr_write()
[all …]
/linux/drivers/usb/typec/tcpm/
H A Dtcpci_rt1711h.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Richtek RT1711H Type-C Chip Driver
13 #include <linux/i2c.h>
43 /* I2C timeout = (tout + 1) * 12.5ms */
73 return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u16)); in rt1711h_read16()
78 return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u16)); in rt1711h_write16()
83 return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u8)); in rt1711h_read8()
88 return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u8)); in rt1711h_write8()
106 struct regmap *regmap = chip->data.regmap; in rt1711h_init()
116 if (chip->info->enable_pd30_extended_message) { in rt1711h_init()
[all …]
/linux/arch/arm/boot/dts/samsung/
H A Dexynos5250-snow-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/clock/maxim,max77686.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/input/input.h>
12 #include <dt-bindings/sound/samsung-i2s.h>
30 stdout-path = "serial3:115200n8";
33 gpio-keys {
34 compatible = "gpio-keys";
35 pinctrl-names = "default";
[all …]
/linux/arch/arm/mach-orion5x/
H A Dterastation_pro2-setup.c1 // SPDX-License-Identifier: GPL-2.0-or-later
16 #include <linux/i2c.h>
18 #include <asm/mach-types.h>
31 * - Marvell 88F5281-D0
32 * - Marvell 88SX6042 SATA controller (PCI)
33 * - Marvell 88E1118 Gigabit Ethernet PHY
34 * - 256KB NOR flash
35 * - 128MB of DDR RAM
36 * - PCIe port (not equipped)
57 .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1,
[all …]
/linux/arch/arm/mach-omap2/
H A Dvc.c1 // SPDX-License-Identifier: GPL-2.0-only
19 #include "prm-regbits-34xx.h"
20 #include "prm-regbits-44xx.h"
52 * struct omap_vc_channel_cfg - describe the cfg_channel bitfield
96 /* Default I2C trace length on pcb, 6.3cm. Used for capacitance calculations. */
101 * omap_vc_config_channel - configure VC channel to PMIC mappings
106 * - i2c slave address (SA)
107 * - voltage configuration address (RAV)
108 * - command configuration address (RAC) and enable bit (RACEN)
109 * - command values for ON, ONLP, RET and OFF (CMD)
[all …]
/linux/drivers/hwmon/
H A Dina2xx.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Zero Drift Bi-Directional Current/Power Monitor with I2C Interface
10 * Bi-Directional Current/Power Monitor with I2C Interface
14 * Bi-Directional Current/Power Monitor with I2C Interface
18 * Bi-directional Current/Power Monitor with I2C Interface
31 #include <linux/i2c.h>
59 /* settings - depend on use case */
259 val = DIV_ROUND_CLOSEST((s16)regval, data->config->shunt_div); in ina2xx_get_value()
262 val = (regval >> data->config->bus_voltage_shift) * in ina2xx_get_value()
263 data->config->bus_voltage_lsb; in ina2xx_get_value()
[all …]

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