summaryrefslogtreecommitdiff
path: root/src/ec/google/chromeec/ec.h
blob: 35ce3cce6e320e71627d463c830966973232404a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
/* SPDX-License-Identifier: GPL-2.0-only */

/*
 * Mailbox EC communication interface for Google Chrome Embedded Controller.
 */

#ifndef _EC_GOOGLE_CHROMEEC_EC_H
#define _EC_GOOGLE_CHROMEEC_EC_H
#include <types.h>
#include <device/device.h>
#include "ec_commands.h"

/* Fill in base and size of the IO port resources used. */
void google_chromeec_ioport_range(uint16_t *base, size_t *size);

int google_chromeec_i2c_xfer(uint8_t chip, uint8_t addr, int alen,
			     uint8_t *buffer, int len, int is_read);
uint64_t google_chromeec_get_wake_mask(void);
int google_chromeec_set_sci_mask(uint64_t mask);
int google_chromeec_set_smi_mask(uint64_t mask);
int google_chromeec_set_wake_mask(uint64_t mask);
uint8_t google_chromeec_get_event(void);

/* Check if EC supports feature EC_FEATURE_UNIFIED_WAKE_MASKS */
bool google_chromeec_is_uhepi_supported(void);
int google_ec_running_ro(void);
enum ec_image google_chromeec_get_current_image(void);
void google_chromeec_init(void);
int google_chromeec_pd_get_amode(uint16_t svid);
/* Check for the current mux state in EC
 * in: int port physical port number of the type-c port
 * out: uint8_t flags representing the status of the mux such as
 *	usb capability, dp capability, cable type, etc
 */
int google_chromeec_usb_get_pd_mux_info(int port, uint8_t *flags);
/* Returns data role and type of device connected */
int google_chromeec_usb_pd_control(int port, bool *ufp, bool *dbg_acc,
					uint8_t *dp_mode);
int google_chromeec_wait_for_displayport(long timeout);

/* Device events */
uint64_t google_chromeec_get_device_enabled_events(void);
int google_chromeec_set_device_enabled_events(uint64_t mask);
uint64_t google_chromeec_get_device_current_events(void);

int google_chromeec_check_feature(int feature);
uint8_t google_chromeec_calc_checksum(const uint8_t *data, int size);

/**
 * google_chromeec_get_board_version() - Get the board version
 * @version: Out parameter to retrieve the board Version
 *
 * Return: 0 on success or -1 on failure/error.
 *
 * This function is used to get the board version information from EC.
 */
int google_chromeec_get_board_version(uint32_t *version);
uint32_t google_chromeec_get_sku_id(void);
int google_chromeec_set_sku_id(uint32_t skuid);
uint64_t  google_chromeec_get_events_b(void);
int google_chromeec_clear_events_b(uint64_t mask);
int google_chromeec_kbbacklight(int percent);
void google_chromeec_post(uint8_t postcode);
int google_chromeec_vbnv_context(int is_read, uint8_t *data, int len);
uint8_t google_chromeec_get_switches(void);
bool google_chromeec_get_ap_watchdog_flag(void);

/* Temporary secure storage commands */
int google_chromeec_vstore_supported(void);
int google_chromeec_vstore_info(uint32_t *locked);
int google_chromeec_vstore_read(int slot, uint8_t *data);
int google_chromeec_vstore_write(int slot, uint8_t *data, size_t size);

/* Issue reboot command to EC with specified type and flags. Returns 0 on
   success, < 0 otherwise. */
int google_chromeec_reboot(int dev_idx, enum ec_reboot_cmd type, uint8_t flags);

/**
 * Get data from Cros Board Info
 *
 * @param id/fw_config/buf [OUT] value from CBI.
 * @return 0 on success or negative integer for errors.
 */
int google_chromeec_cbi_get_oem_id(uint32_t *id);
int google_chromeec_cbi_get_sku_id(uint32_t *id);
int google_chromeec_cbi_get_fw_config(uint64_t *fw_config);
int google_chromeec_cbi_get_dram_part_num(char *buf, size_t bufsize);
int google_chromeec_cbi_get_oem_name(char *buf, size_t bufsize);
/* version may be stored in CBI as a smaller integer width, but the EC code
   handles it correctly. */
int google_chromeec_cbi_get_board_version(uint32_t *version);
int google_chromeec_cbi_get_ssfc(uint32_t *ssfc);

#define CROS_SKU_UNKNOWN	0xFFFFFFFF
#define CROS_SKU_UNPROVISIONED	0x7FFFFFFF
/* Returns CROS_SKU_UNKNOWN on failure. */
uint32_t google_chromeec_get_board_sku(void);
const char *google_chromeec_smbios_system_sku(void);

/* MEC uses 0x800/0x804 as register/index pair, thus an 8-byte resource. */
#define MEC_EMI_BASE		0x800
#define MEC_EMI_SIZE		8

/* For MEC, access ranges 0x800 thru 0x9ff using EMI interface instead of LPC */
#define MEC_EMI_RANGE_START EC_HOST_CMD_REGION0
#define MEC_EMI_RANGE_END   (EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SIZE)

int google_chromeec_set_usb_charge_mode(uint8_t port_id, enum usb_charge_mode mode);
int google_chromeec_set_usb_pd_role(uint8_t port, enum usb_pd_control_role role);
/*
 * Retrieve the charger type and max wattage.
 *
 * @param type      charger type
 * @param current_max charger max current
 * @param voltage_max charger max voltage
 * @return non-zero for error, otherwise 0.
 */
int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type,
					  uint16_t *current_max, uint16_t *voltage_max);

/*
 * Set max current and voltage of a dedicated charger.
 *
 * @param current_lim Max current in mA
 * @param voltage_lim Max voltage in mV
 * @return non-zero for error, otherwise 0.
 */
int google_chromeec_override_dedicated_charger_limit(uint16_t current_lim,
						     uint16_t voltage_lim);

/* internal structure to send a command to the EC and wait for response. */
struct chromeec_command {
	uint16_t    cmd_code;	  /* command code in, status out */
	uint8_t     cmd_version;  /* command version */
	const void* cmd_data_in;  /* command data, if any */
	void*	    cmd_data_out; /* command response, if any */
	uint16_t    cmd_size_in;  /* size of command data */
	uint16_t    cmd_size_out; /* expected size of command response in,
				   * actual received size out */
	int         cmd_dev_index;/* device index for passthru */
};

/*
 * There are transport level constraints for sending protov3 packets. Because
 * of this provide a way for the generic protocol layer to request buffers
 * so that there is zero copying being done through the layers.
 *
 * Request the buffer provided the size. If 'req' is non-zero then the
 * buffer requested is for EC requests. Otherwise it's for responses. Return
 * non-NULL on success, NULL on error.
 */
void *crosec_get_buffer(size_t size, int req);

/*
 * The lower level transport works on the buffers handed out to the
 * upper level. Therefore, only the size of the request and response
 * are required.
 */
typedef int (*crosec_io_t)(size_t req_size, size_t resp_size, void *context);
int crosec_command_proto(struct chromeec_command *cec_command,
			 crosec_io_t crosec_io, void *context);

/**
 * Performs light verification of the EC<->AP communcation channel.
 *
 * @return		0 on success, -1 on error
 */
int google_chromeec_hello(void);

/**
 * Send a command to a CrOS EC
 *
 * @param cec_command: CrOS EC command to send
 * @return 0 for success. Non-zero for error.
 */
int google_chromeec_command(struct chromeec_command *cec_command);

struct google_chromeec_event_info {
	uint64_t log_events;
	uint64_t sci_events;
	uint64_t smi_events;
	uint64_t s3_wake_events;
	uint64_t s3_device_events;
	uint64_t s5_wake_events;
	uint64_t s0ix_wake_events;
};
void google_chromeec_events_init(const struct google_chromeec_event_info *info,
					bool is_s3_wakeup);

/*
 * Get next available MKBP event in ec_response_get_next_event. Returns 0 on
 * success, < 0 otherwise.
 */
int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event);

/* Log host events to eventlog based on the mask provided. */
void google_chromeec_log_events(uint64_t mask);

/**
 * Protect/un-protect EC flash regions.
 *
 * @param mask		Set/clear the requested bits in 'flags'
 * @param flags		Flash protection flags
 * @param resp		Pointer to response structure
 * @return		0 on success, -1 on error
 */
int google_chromeec_flash_protect(uint32_t mask, uint32_t flags,
				  struct ec_response_flash_protect *resp);
/**
 * Calculate image hash for vboot.
 *
 * @param hash_type	The hash types supported by the EC for vboot
 * @param offset	The offset to start hashing in flash
 * @param resp		Pointer to response structure
 * @return		0 on success, -1 on error
 */
int google_chromeec_start_vboot_hash(enum ec_vboot_hash_type hash_type,
				     uint32_t offset,
				     struct ec_response_vboot_hash *resp);
/**
 * Return the EC's vboot image hash.
 *
 * @param offset	Get hash for flash region beginning here
 * @param resp		Pointer to response structure
 * @return		0 on success, -1 on error
 *
 */
int google_chromeec_get_vboot_hash(uint32_t offset,
				   struct ec_response_vboot_hash *resp);

/**
 * Get offset and size of the specified EC flash region.
 *
 * @param region	Which region of EC flash
 * @param offset	Gets filled with region's offset
 * @param size		Gets filled with region's size
 * @return		0 on success, -1 on error
 */
int google_chromeec_flash_region_info(enum ec_flash_region region,
				      uint32_t *offset, uint32_t *size);
/**
 * Erase a region of EC flash.
 *
 * @param offset	Where to begin erasing
 * @param size		Size of area to erase
 * @return		0 on success, -1 on error
 */
int google_chromeec_flash_erase(uint32_t region_offset, uint32_t region_size);

/**
 * Return information about the entire flash.
 *
 * @param info		Pointer to response structure
 * @return		0 on success, -1 on error
 */
int google_chromeec_flash_info(struct ec_response_flash_info *info);

/**
 * Write a block into EC flash.
 *
 * @param data		Pointer to data to write to flash, prefixed by a
 *			struct ec_params_flash_write
 * @param offset        Offset to begin writing data
 * @param size		Number of bytes to be written to flash from data
 * @return		0 on success, -1 on error
 */
int google_chromeec_flash_write_block(const uint8_t *data, uint32_t size);

/**
 * Verify flash using EFS if available.
 *
 * @param region	Which flash region to verify
 * @return		0 on success, -1 on error
 */
int google_chromeec_efs_verify(enum ec_flash_region region);

/**
 * Command EC to perform battery cutoff.
 *
 * @param flags		Flags to pass to the EC
 * @return		0 on success, -1 on error
 */
int google_chromeec_battery_cutoff(uint8_t flags);

/**
 * Check if the EC is requesting the system to limit input power.
 *
 * @param limit_power	If successful, limit_power is 1 if EC is requesting
 *			input power limits, otherwise 0.
 * @return		0 on success, -1 on error
 */
int google_chromeec_read_limit_power_request(int *limit_power);

/**
 * Get information about the protocol that the EC speaks.
 *
 * @param resp		Filled with host command protocol information.
 * @return		0 on success, -1 on error
 */
int google_chromeec_get_protocol_info(
	struct ec_response_get_protocol_info *resp);

/**
 * Get available versions of the specified command.
 *
 * @param command	Command ID
 * @param pmask		Pointer to version mask
 * @return		0 on success, -1 on error
 */
int google_chromeec_get_cmd_versions(int command, uint32_t *pmask);

/**
 * Get number of PD-capable USB ports from EC.
 *
 * @param *num_ports	If successful, num_ports is the number
 *			of PD-capable USB ports according to the EC.
 * @return		0 on success, -1 on error
 */
int google_chromeec_get_num_pd_ports(unsigned int *num_ports);

/* Structure representing the capabilities of a USB-PD port */
struct usb_pd_port_caps {
	enum ec_pd_power_role_caps power_role_cap;
	enum ec_pd_try_power_role_caps try_power_role_cap;
	enum ec_pd_data_role_caps data_role_cap;
	enum ec_pd_port_location port_location;
};

/**
 * Get role-based capabilities for a USB-PD port
 *
 * @param port			Which port to get information about
 * @param *power_role_cap	The power-role capabillity of the port
 * @param *try_power_role_cap	The Try-power-role capability of the port
 * @param *data_role_cap	The data role capability of the port
 * @param *port_location	Location of the port on the device
 * @return			0 on success, -1 on error
 */
int google_chromeec_get_pd_port_caps(int port,
				struct usb_pd_port_caps *port_caps);

/**
 * Get the keyboard configuration / layout information from EC
 *
 * @param *keybd	If successful, this is filled with EC filled parameters
 * @return		0 on success, -1 on error
 */
int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd);

/**
 * Send EC command to perform AP reset
 *
 * @return	0 on success, -1 on error
 */
int google_chromeec_ap_reset(void);

/**
 * Configure the regulator as enabled / disabled.
 *
 * @param index		Regulator ID
 * @param enable	Set to enable / disable the regulator
 * @return		0 on success, -1 on error
 */
int google_chromeec_regulator_enable(uint32_t index, uint8_t enable);

/**
 * Query if the regulator is enabled.
 *
 * @param index		Regulator ID
 * @param *enabled	If successful, enabled indicates enable/disable status.
 * @return		0 on success, -1 on error
 */
int google_chromeec_regulator_is_enabled(uint32_t index, uint8_t *enabled);

/**
 * Set voltage for the voltage regulator within the range specified.
 *
 * @param index		Regulator ID
 * @param min_mv	Minimum voltage
 * @param max_mv	Maximum voltage
 * @return		0 on success, -1 on error
 */
int google_chromeec_regulator_set_voltage(uint32_t index, uint32_t min_mv,
					  uint32_t max_mv);

/**
 * Get the currently configured voltage for the voltage regulator.
 *
 * @param index		Regulator ID
 * @param *voltage_mv	If successful, voltage_mv is filled with current voltage
 * @return		0 on success, -1 on error
 */
int google_chromeec_regulator_get_voltage(uint32_t index, uint32_t *voltage_mv);

#if CONFIG(HAVE_ACPI_TABLES)
/**
 * Writes USB Type-C PD related information to the SSDT
 *
 * @param dev			EC device
 */
void google_chromeec_fill_ssdt_generator(const struct device *dev);

/**
 * Returns the ACPI name for the EC device.
 *
 * @param dev			EC device
 */
const char *google_chromeec_acpi_name(const struct device *dev);

#endif /* HAVE_ACPI_TABLES */

#endif /* _EC_GOOGLE_CHROMEEC_EC_H */