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/linux/drivers/misc/echo/
H A Decho.c106 static inline void lms_adapt_bg(struct oslec_state *ec, int clean, int shift) in lms_adapt_bg() argument
122 offset2 = ec->curr_pos; in lms_adapt_bg()
123 offset1 = ec->taps - offset2; in lms_adapt_bg()
125 for (i = ec->taps - 1; i >= offset1; i--) { in lms_adapt_bg()
126 exp = (ec->fir_state_bg.history[i - offset1] * factor); in lms_adapt_bg()
127 ec->fir_taps16[1][i] += (int16_t) ((exp + (1 << 14)) >> 15); in lms_adapt_bg()
130 exp = (ec->fir_state_bg.history[i + offset2] * factor); in lms_adapt_bg()
131 ec->fir_taps16[1][i] += (int16_t) ((exp + (1 << 14)) >> 15); in lms_adapt_bg()
145 struct oslec_state *ec; in oslec_create() local
149 ec = kzalloc(sizeof(*ec), GFP_KERNEL); in oslec_create()
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/linux/drivers/acpi/
H A Dec.c3 * ec.c - ACPI Embedded Controller Driver (v3)
17 #define pr_fmt(fmt) "ACPI: EC: " fmt
38 /* EC status register */
43 #define ACPI_EC_FLAG_SCI 0x20 /* EC-SCI occurred */
47 * This leads to lots of practical timing issues for the host EC driver.
48 * The following variations are defined (from the target EC firmware's
57 * kind of EC firmware has implemented an event queue and will
77 /* EC commands */
86 #define ACPI_EC_DELAY 500 /* Wait 500ms max. during EC ops */
88 #define ACPI_EC_UDELAY_POLL 550 /* Wait 1ms for EC transaction polling */
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/linux/arch/arm/mach-rpc/
H A Decard.c58 ecard_t *ec; member
70 void (*init)(ecard_t *ec);
77 static void atomwide_3p_quirk(ecard_t *ec);
121 struct expansion_card *ec = req->ec; in ecard_task_reset() local
124 res = ec->slot_no == 8 in ecard_task_reset()
125 ? &ec->resource[ECARD_RES_MEMC] in ecard_task_reset()
126 : ec->easi in ecard_task_reset()
127 ? &ec->resource[ECARD_RES_EASI] in ecard_task_reset()
128 : &ec->resource[ECARD_RES_IOCSYNC]; in ecard_task_reset()
130 ecard_loader_reset(res->start, ec->loader); in ecard_task_reset()
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/linux/drivers/md/
H A Ddm-ebs-target.c37 static inline sector_t __sector_to_block(struct ebs_c *ec, sector_t sector) in __sector_to_block() argument
39 return sector >> ec->block_shift; in __sector_to_block()
48 static inline unsigned int __nr_blocks(struct ebs_c *ec, struct bio *bio) in __nr_blocks() argument
50 sector_t end_sector = __block_mod(bio->bi_iter.bi_sector, ec->u_bs) + bio_sectors(bio); in __nr_blocks()
52 return __sector_to_block(ec, end_sector) + (__block_mod(end_sector, ec->u_bs) ? 1 : 0); in __nr_blocks()
65 static int __ebs_rw_bvec(struct ebs_c *ec, enum req_op op, struct bio_vec *bv, in __ebs_rw_bvec() argument
72 unsigned int buf_off = to_bytes(__block_mod(iter->bi_sector, ec->u_bs)); in __ebs_rw_bvec()
73 sector_t block = __sector_to_block(ec, iter->bi_sector); in __ebs_rw_bvec()
83 cur_len = min(dm_bufio_get_block_size(ec->bufio) - buf_off, bv_len); in __ebs_rw_bvec()
86 if (op == REQ_OP_READ || buf_off || bv_len < dm_bufio_get_block_size(ec->bufio)) in __ebs_rw_bvec()
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/linux/drivers/platform/chrome/wilco_ec/
H A Dcore.c7 * This is the entry point for the drivers that control the Wilco EC.
15 #include <linux/platform_data/wilco-ec.h>
20 #define DRV_NAME "wilco-ec"
41 struct wilco_ec_device *ec; in wilco_ec_probe() local
44 ec = devm_kzalloc(dev, sizeof(*ec), GFP_KERNEL); in wilco_ec_probe()
45 if (!ec) in wilco_ec_probe()
48 platform_set_drvdata(pdev, ec); in wilco_ec_probe()
49 ec->dev = dev; in wilco_ec_probe()
50 mutex_init(&ec->mailbox_lock); in wilco_ec_probe()
52 ec->data_size = sizeof(struct wilco_ec_response) + EC_MAILBOX_DATA_SIZE; in wilco_ec_probe()
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H A Dmailbox.c7 * The Wilco EC is similar to a typical ChromeOS embedded controller.
9 * protocol, but with some important differences. The EC firmware does
21 #include <linux/platform_data/wilco-ec.h>
32 /* Version of EC protocol */
41 /* EC response flags */
43 #define EC_CMDR_PENDING BIT(1) /* Write pending to EC */
44 #define EC_CMDR_BUSY BIT(2) /* EC is busy processing a command */
48 * wilco_ec_response_timed_out() - Wait for EC response.
49 * @ec: EC device.
51 * Return: true if EC timed out, false if EC did not time out.
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H A Dkeyboard_leds.c7 * Since the EC will never change the backlight level of its own accord,
14 #include <linux/platform_data/wilco-ec.h>
22 struct wilco_ec_device *ec; member
33 * struct wilco_keyboard_leds_msg - Message to/from EC for keyboard LED control.
35 * @status: Set by EC to 0 on success, 0xFF on failure.
55 static int send_kbbl_msg(struct wilco_ec_device *ec, in send_kbbl_msg() argument
69 ret = wilco_ec_mailbox(ec, &msg); in send_kbbl_msg()
71 dev_err(ec->dev, in send_kbbl_msg()
79 static int set_kbbl(struct wilco_ec_device *ec, enum led_brightness brightness) in set_kbbl() argument
91 ret = send_kbbl_msg(ec, &request, &response); in set_kbbl()
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/linux/drivers/platform/olpc/
H A Dolpc-ec.c19 #include <linux/olpc-ec.h>
42 /* Pending EC commands */
49 * EC event mask to be applied during suspend (defining wakeup
55 * Running an EC command while suspending means we don't always finish
56 * the command before the machine suspends. This means that the EC
58 * of time (while the OS is asleep) the EC times out and restarts its
61 * the EC... and everyone's uphappy.
79 struct olpc_ec_priv *ec = container_of(w, struct olpc_ec_priv, worker); in olpc_ec_worker() local
84 spin_lock_irqsave(&ec->cmd_q_lock, flags); in olpc_ec_worker()
85 if (!list_empty(&ec->cmd_q)) { in olpc_ec_worker()
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/linux/drivers/platform/arm64/
H A Dlenovo-yoga-c630.c38 static int yoga_c630_ec_request(struct yoga_c630_ec *ec, u8 *req, size_t req_len, in yoga_c630_ec_request() argument
43 lockdep_assert_held(&ec->lock); in yoga_c630_ec_request()
45 ret = i2c_smbus_write_i2c_block_data(ec->client, LENOVO_EC_REQUEST_REG, in yoga_c630_ec_request()
50 return i2c_smbus_read_i2c_block_data(ec->client, LENOVO_EC_RESPONSE_REG, in yoga_c630_ec_request()
54 int yoga_c630_ec_read8(struct yoga_c630_ec *ec, u8 addr) in yoga_c630_ec_read8() argument
60 guard(mutex)(&ec->lock); in yoga_c630_ec_read8()
63 ret = yoga_c630_ec_request(ec, req, sizeof(req), &val, 1); in yoga_c630_ec_read8()
71 int yoga_c630_ec_read16(struct yoga_c630_ec *ec, u8 addr) in yoga_c630_ec_read16() argument
82 guard(mutex)(&ec->lock); in yoga_c630_ec_read16()
85 ret = yoga_c630_ec_request(ec, req, sizeof(req), &lsb, 1); in yoga_c630_ec_read16()
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H A Dacer-aspire1-ec.c94 struct aspire_ec *ec = data; in aspire_ec_irq_handler() local
108 id = i2c_smbus_read_byte_data(ec->client, ASPIRE_EC_EVENT); in aspire_ec_irq_handler()
110 dev_err(&ec->client->dev, "Failed to read event id: %pe\n", ERR_PTR(id)); in aspire_ec_irq_handler()
124 aspire_ec_ram_read(ec->client, ASPIRE_EC_RAM_WATCHDOG, &tmp, sizeof(tmp)); in aspire_ec_irq_handler()
126 aspire_ec_ram_write(ec->client, ASPIRE_EC_RAM_WATCHDOG, tmp); in aspire_ec_irq_handler()
131 input_report_switch(ec->idev, SW_LID, 1); in aspire_ec_irq_handler()
132 input_sync(ec->idev); in aspire_ec_irq_handler()
137 input_report_switch(ec->idev, SW_LID, 0); in aspire_ec_irq_handler()
138 input_sync(ec->idev); in aspire_ec_irq_handler()
146 power_supply_changed(ec->bat_psy); in aspire_ec_irq_handler()
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/linux/Documentation/devicetree/bindings/mfd/
H A Dgoogle,cros-ec.yaml4 $id: http://devicetree.org/schemas/mfd/google,cros-ec.yaml#
14 Google's ChromeOS EC is a microcontroller which talks to the AP and
16 The EC can be connected through various interfaces (I2C, SPI, and others)
23 For implementations of the EC connected through I2C.
24 const: google,cros-ec-i2c
26 For implementations of the EC connected through SPI.
27 const: google,cros-ec-spi
31 - const: google,cros-ec-fp
32 - const: google,cros-ec-spi
34 For implementations of the EC connected through RPMSG.
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/linux/drivers/mfd/
H A Dcros_ec_dev.c20 #define DRV_NAME "cros-ec-dev"
74 { .name = "cros-ec-cec", },
78 { .name = "cros-ec-gpio", },
82 { .name = "cros-ec-rtc", },
86 { .name = "cros-ec-sensorhub", },
100 { .name = "cros-ec-wdt", }
104 { .name = "cros-ec-led", },
150 { .name = "cros-ec-chardev", },
151 { .name = "cros-ec-debugfs", },
152 { .name = "cros-ec-hwmon", },
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H A Dntxec.c150 struct ntxec *ec; in ntxec_probe() local
156 ec = devm_kmalloc(&client->dev, sizeof(*ec), GFP_KERNEL); in ntxec_probe()
157 if (!ec) in ntxec_probe()
160 ec->dev = &client->dev; in ntxec_probe()
162 ec->regmap = devm_regmap_init_i2c(client, &regmap_config); in ntxec_probe()
163 if (IS_ERR(ec->regmap)) { in ntxec_probe()
164 dev_err(ec->dev, "Failed to set up regmap for device\n"); in ntxec_probe()
165 return PTR_ERR(ec->regmap); in ntxec_probe()
169 res = regmap_read(ec->regmap, NTXEC_REG_VERSION, &version); in ntxec_probe()
171 dev_err(ec->dev, "Failed to read firmware version number\n"); in ntxec_probe()
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/linux/drivers/edac/
H A Dmce_amd.c146 static bool f12h_mc0_mce(u16 ec, u8 xec) in f12h_mc0_mce() argument
150 if (MEM_ERROR(ec)) { in f12h_mc0_mce()
151 u8 ll = LL(ec); in f12h_mc0_mce()
157 pr_cont("Data/Tag %s error.\n", R4_MSG(ec)); in f12h_mc0_mce()
164 static bool f10h_mc0_mce(u16 ec, u8 xec) in f10h_mc0_mce() argument
166 if (R4(ec) == R4_GEN && LL(ec) == LL_L1) { in f10h_mc0_mce()
170 return f12h_mc0_mce(ec, xec); in f10h_mc0_mce()
173 static bool k8_mc0_mce(u16 ec, u8 xec) in k8_mc0_mce() argument
175 if (BUS_ERROR(ec)) { in k8_mc0_mce()
180 return f10h_mc0_mce(ec, xec); in k8_mc0_mce()
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/linux/crypto/
H A Djitterentropy.c183 static void jent_apt_init(struct rand_data *ec, unsigned int osr) in jent_apt_init() argument
190 ec->apt_cutoff = jent_apt_cutoff_lookup[ in jent_apt_init()
192 ec->apt_cutoff_permanent = jent_apt_cutoff_permanent_lookup[ in jent_apt_init()
195 ec->apt_cutoff = jent_apt_cutoff_lookup[osr - 1]; in jent_apt_init()
196 ec->apt_cutoff_permanent = in jent_apt_init()
203 * @ec [in] Reference to entropy collector
205 static void jent_apt_reset(struct rand_data *ec, unsigned int delta_masked) in jent_apt_reset() argument
208 ec->apt_count = 0; in jent_apt_reset()
209 ec->apt_base = delta_masked; in jent_apt_reset()
210 ec->apt_observations = 0; in jent_apt_reset()
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/linux/drivers/platform/chrome/
H A Dcros_ec_sensorhub.c20 #define DRV_NAME "cros-ec-sensorhub"
55 struct cros_ec_dev *ec = sensorhub->ec; in cros_ec_sensorhub_register() local
68 ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); in cros_ec_sensorhub_register()
70 dev_warn(dev, "no info for EC sensor %d : %d/%d\n", in cros_ec_sensorhub_register()
77 name = "cros-ec-accel"; in cros_ec_sensorhub_register()
80 name = "cros-ec-baro"; in cros_ec_sensorhub_register()
83 name = "cros-ec-gyro"; in cros_ec_sensorhub_register()
86 name = "cros-ec-mag"; in cros_ec_sensorhub_register()
89 name = "cros-ec-prox"; in cros_ec_sensorhub_register()
92 name = "cros-ec-light"; in cros_ec_sensorhub_register()
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H A DKconfig70 Controller (EC) providing keyboard, battery and power services.
72 protocol for talking to the EC is defined by the bus driver.
83 EC through an I2C bus. This uses a simple byte-level protocol with
91 If you say Y here, you get support for talking to the ChromeOS EC
93 checksum. Also since there's no addition EC-to-host interrupt, this
104 If you say Y here, you get support for talking to the ChromeOS EC
117 If you say Y here, you get support for talking to the ChromeOS EC
118 through a SPI bus, using a byte-level protocol. Since the EC's
126 If you say Y here, you get support for talking to the ChromeOS EC
137 If you say Y here, you get support for talking to the ChromeOS EC
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H A Dcros_ec.c3 * ChromeOS EC multi-function device
7 * The ChromeOS EC multi function device is used to mux all the requests
8 * to the EC device for its multiple features: keyboard controller,
50 * cros_ec_handle_event() - process and forward pending events on EC
53 * Call this function in a loop when the kernel is notified that the EC has
145 "EC detected sleep transition timeout. Total sleep transitions: %d", in cros_ec_sleep_event()
172 * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
191 ec_dev->ec = NULL; in cros_ec_register()
209 dev_err(dev, "Cannot identify the EC: error %d\n", err); in cros_ec_register()
218 "chromeos-ec", ec_dev); in cros_ec_register()
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/linux/include/linux/platform_data/
H A Dwilco-ec.h15 #define WILCO_EC_FLAG_NO_RESPONSE BIT(0) /* EC does not respond */
31 * @data_buffer: Buffer used for EC communication. The same buffer
33 * @data_size: Size of the data buffer used for EC communication.
75 * @result: Result code from the EC. Non-zero indicates an error.
91 * @WILCO_EC_MSG_LEGACY: Legacy EC messages for standard EC behavior.
92 * @WILCO_EC_MSG_PROPERTY: Get/Set/Sync EC controlled NVRAM property.
93 * @WILCO_EC_MSG_TELEMETRY: Request telemetry data from the EC.
105 * @request_size: Number of bytes to send to the EC.
107 * @response_size: Number of bytes to read from EC.
121 * wilco_ec_mailbox() - Send request to the EC and receive the response.
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H A Dcros_ec_proto.h29 * The EC is unresponsive for a time after a reboot command. Add a
45 * EC panic is not covered by the standard (0-F) ACPI notify values.
46 * Arbitrarily choosing B0 to notify ec panic, which is in the 84-BF
52 * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
69 * struct cros_ec_command - Information about a ChromeOS EC command.
73 * @insize: Max number of bytes to accept from the EC.
74 * @result: EC's response to the command (separate from communication failure).
75 * @data: Where to put the incoming data from EC and outgoing data to EC.
87 * struct cros_ec_device - Information about a ChromeOS EC device.
91 * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
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/linux/Documentation/ABI/testing/
H A Ddebugfs-cros-ec1 What: /sys/kernel/debug/<cros-ec-device>/console_log
5 If the EC supports the CONSOLE_READ command type, this file
6 can be used to grab the EC logs. The kernel polls for the log
10 What: /sys/kernel/debug/<cros-ec-device>/panicinfo
14 This file dumps the EC panic information from the previous
16 type is supported by the EC.
18 What: /sys/kernel/debug/<cros-ec-device>/pdinfo
27 What: /sys/kernel/debug/<cros-ec-device>/uptime
31 A u32 providing the time since EC booted in ms. This is
32 is used for synchronizing the AP host time with the EC
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/linux/drivers/ata/
H A Dpata_icside.c64 struct expansion_card *ec; member
83 /* Prototype: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
86 static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr) in pata_icside_irqenable_arcin_v5() argument
88 struct pata_icside_state *state = ec->irq_data; in pata_icside_irqenable_arcin_v5()
93 /* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
96 static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr) in pata_icside_irqdisable_arcin_v5() argument
98 struct pata_icside_state *state = ec->irq_data; in pata_icside_irqdisable_arcin_v5()
110 /* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
113 static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr) in pata_icside_irqenable_arcin_v6() argument
115 struct pata_icside_state *state = ec->irq_data; in pata_icside_irqenable_arcin_v6()
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/linux/drivers/pwm/
H A Dpwm-cros-ec.c3 * Expose a PWM controlled by the ChromeOS EC to the host processor.
19 * struct cros_ec_pwm_device - Driver data for EC PWM
21 * @ec: Pointer to EC device
25 struct cros_ec_device *ec; member
51 struct cros_ec_device *ec = ec_pwm->ec; in cros_ec_pwm_set_duty() local
72 dev_err(ec->dev, "Invalid PWM type index: %d\n", index); in cros_ec_pwm_set_duty()
81 return cros_ec_cmd_xfer_status(ec, msg); in cros_ec_pwm_set_duty()
84 static int cros_ec_pwm_get_duty(struct cros_ec_device *ec, bool use_pwm_type, u8 index) in cros_ec_pwm_get_duty() argument
108 dev_err(ec->dev, "Invalid PWM type index: %d\n", index); in cros_ec_pwm_get_duty()
117 ret = cros_ec_cmd_xfer_status(ec, msg); in cros_ec_pwm_get_duty()
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/linux/drivers/scsi/arm/
H A Dpowertec.c62 struct expansion_card *ec; member
68 /* Prototype: void powertecscsi_irqenable(ec, irqnr)
70 * Params : ec - expansion card structure
74 powertecscsi_irqenable(struct expansion_card *ec, int irqnr) in powertecscsi_irqenable() argument
76 struct powertec_info *info = ec->irq_data; in powertecscsi_irqenable()
80 /* Prototype: void powertecscsi_irqdisable(ec, irqnr)
82 * Params : ec - expansion card structure
86 powertecscsi_irqdisable(struct expansion_card *ec, int irqnr) in powertecscsi_irqdisable() argument
88 struct powertec_info *info = ec->irq_data; in powertecscsi_irqdisable()
193 host->hostt->name, info->info.scsi.type, info->ec->slot_no, in powertecscsi_info()
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/linux/arch/arm/include/asm/
H A Decard.h113 void (*irqenable)(ecard_t *ec, int irqnr);
114 void (*irqdisable)(ecard_t *ec, int irqnr);
115 int (*irqpending)(ecard_t *ec);
116 void (*fiqenable)(ecard_t *ec, int fiqnr);
117 void (*fiqdisable)(ecard_t *ec, int fiqnr);
118 int (*fiqpending)(ecard_t *ec);
130 #define ecard_resource_start(ec,nr) ((ec)->resource[nr].start) argument
131 #define ecard_resource_end(ec,nr) ((ec)->resource[nr].end) argument
132 #define ecard_resource_len(ec,nr) ((ec)->resource[nr].end - \ argument
133 (ec)->resource[nr].start + 1)
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