/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
*
* Copyright (C) 2014 Cypress Semiconductor, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/mutex.h>
#include <linux/completion.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
#include <linux/crc-itu-t.h>
#include "cyapa.h"
/* Macro of Gen5 */
#define RECORD_EVENT_NONE 0
#define RECORD_EVENT_TOUCHDOWN 1
#define RECORD_EVENT_DISPLACE 2
#define RECORD_EVENT_LIFTOFF 3
#define CYAPA_TSG_FLASH_MAP_BLOCK_SIZE 0x80
#define CYAPA_TSG_IMG_FW_HDR_SIZE 13
#define CYAPA_TSG_FW_ROW_SIZE (CYAPA_TSG_FLASH_MAP_BLOCK_SIZE)
#define CYAPA_TSG_IMG_START_ROW_NUM 0x002e
#define CYAPA_TSG_IMG_END_ROW_NUM 0x01fe
#define CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM 0x01ff
#define CYAPA_TSG_IMG_MAX_RECORDS (CYAPA_TSG_IMG_END_ROW_NUM - \
CYAPA_TSG_IMG_START_ROW_NUM + 1 + 1)
#define CYAPA_TSG_IMG_READ_SIZE (CYAPA_TSG_FLASH_MAP_BLOCK_SIZE / 2)
#define CYAPA_TSG_START_OF_APPLICATION 0x1700
#define CYAPA_TSG_APP_INTEGRITY_SIZE 60
#define CYAPA_TSG_FLASH_MAP_METADATA_SIZE 60
#define CYAPA_TSG_BL_KEY_SIZE 8
#define CYAPA_TSG_MAX_CMD_SIZE 256
#define GEN5_BL_CMD_VERIFY_APP_INTEGRITY 0x31
#define GEN5_BL_CMD_GET_BL_INFO 0x38
#define GEN5_BL_CMD_PROGRAM_VERIFY_ROW 0x39
#define GEN5_BL_CMD_LAUNCH_APP 0x3b
#define GEN5_BL_CMD_INITIATE_BL 0x48
#define GEN5_HID_DESCRIPTOR_ADDR 0x0001
#define GEN5_REPORT_DESCRIPTOR_ADDR 0x0002
#define GEN5_INPUT_REPORT_ADDR 0x0003
#define GEN5_OUTPUT_REPORT_ADDR 0x0004
#define GEN5_CMD_DATA_ADDR 0x0006
#define GEN5_TOUCH_REPORT_HEAD_SIZE 7
#define GEN5_TOUCH_REPORT_MAX_SIZE 127
#define GEN5_BTN_REPORT_HEAD_SIZE 6
#define GEN5_BTN_REPORT_MAX_SIZE 14
#define GEN5_WAKEUP_EVENT_SIZE 4
#define GEN5_RAW_DATA_HEAD_SIZE 24
#define GEN5_BL_CMD_REPORT_ID 0x40
#define GEN5_BL_RESP_REPORT_ID 0x30
#define GEN5_APP_CMD_REPORT_ID 0x2f
#define GEN5_APP_RESP_REPORT_ID 0x1f
#define GEN5_APP_DEEP_SLEEP_REPORT_ID 0xf0
#define GEN5_DEEP_SLEEP_RESP_LENGTH 5
#define GEN5_CMD_GET_PARAMETER 0x05
#define GEN5_CMD_SET_PARAMETER 0x06
#define GEN5_PARAMETER_ACT_INTERVL_ID 0x4d
#define GEN5_PARAMETER_ACT_INTERVL_SIZE 1
#define GEN5_PARAMETER_ACT_LFT_INTERVL_ID 0x4f
#define GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE 2
#define GEN5_PARAMETER_LP_INTRVL_ID 0x4c
#define GEN5_PARAMETER_LP_INTRVL_SIZE 2
#define GEN5_PARAMETER_DISABLE_PIP_REPORT 0x08
#define GEN5_POWER_STATE_ACTIVE 0x01
#define GEN5_POWER_STATE_LOOK_FOR_TOUCH 0x02
#define GEN5_POWER_STATE_READY 0x03
#define GEN5_POWER_STATE_IDLE 0x04
#define GEN5_POWER_STATE_BTN_ONLY 0x05
#define GEN5_POWER_STATE_OFF 0x06
#define GEN5_DEEP_SLEEP_STATE_MASK 0x03
#define GEN5_DEEP_SLEEP_STATE_ON 0x00
#define GEN5_DEEP_SLEEP_STATE_OFF 0x01
#define GEN5_DEEP_SLEEP_OPCODE 0x08
#define GEN5_DEEP_SLEEP_OPCODE_MASK 0x0f
#define GEN5_POWER_READY_MAX_INTRVL_TIME 50 /* Unit: ms */
#define GEN5_POWER_IDLE_MAX_INTRVL_TIME 250 /* Unit: ms */
#define GEN5_CMD_REPORT_ID_OFFSET 4
#define GEN5_RESP_REPORT_ID_OFFSET 2
#define GEN5_RESP_RSVD_OFFSET 3
#define GEN5_RESP_RSVD_KEY 0x00
#define GEN5_RESP_BL_SOP_OFFSET 4
#define GEN5_SOP_KEY 0x01 /* Start of Packet */
#define GEN5_EOP_KEY 0x17 /* End of Packet */
#define GEN5_RESP_APP_CMD_OFFSET 4
#define GET_GEN5_CMD_CODE(reg) ((reg) & 0x7f)
#define VALID_CMD_RESP_HEADER(resp, cmd) \
(((resp)[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_APP_RESP_REPORT_ID) && \
((resp)[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY) && \
(GET_GEN5_CMD_CODE((resp)[GEN5_RESP_APP_CMD_OFFSET]) == (cmd)))
#define GEN5_MIN_BL_CMD_LENGTH 13
#define GEN5_MIN_BL_RESP_LENGTH 11
#define GEN5_MIN_APP_CMD_LENGTH 7
#define GEN5_MIN_APP_RESP_LENGTH 5
#define GEN5_UNSUPPORTED_CMD_RESP_LENGTH 6
#define GEN5_RESP_LENGTH_OFFSET 0x00
#define GEN5_RESP_LENGTH_SIZE 2
#define GEN5_HID_DESCRIPTOR_SIZE 32
#define GEN5_BL_HID_REPORT_ID 0xff
#define GEN5_APP_HID_REPORT_ID 0xf7
#define GEN5_BL_MAX_OUTPUT_LENGTH 0x0100
#define GEN5_APP_MAX_OUTPUT_LENGTH 0x00fe
#define GEN5_BL_REPORT_DESCRIPTOR_SIZE 0x1d
#define GEN5_BL_REPORT_DESCRIPTOR_ID 0xfe
#define GEN5_APP_REPORT_DESCRIPTOR_SIZE 0xee
#define GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE 0xfa
#define GEN5_APP_REPORT_DESCRIPTOR_ID 0xf6
#define GEN5_TOUCH_REPORT_ID 0x01
#define GEN5_BTN_REPORT_ID 0x03
#define GEN5_WAKEUP_EVENT_REPORT_ID 0x04
#define GEN5_OLD_PUSH_BTN_REPORT_ID 0x05
#define GEN5_PUSH_BTN_REPORT_ID 0x06
#define GEN5_CMD_COMPLETE_SUCCESS(status) ((status) == 0x00)
#define GEN5_BL_INITIATE_RESP_LEN 11
#define GEN5_BL_FAIL_EXIT_RESP_LEN 11
#define GEN5_BL_FAIL_EXIT_STATUS_CODE 0x0c
#define GEN5_BL_VERIFY_INTEGRITY_RESP_LEN 12
#define GEN5_BL_INTEGRITY_CHEKC_PASS 0x00
#define GEN5_BL_BLOCK_WRITE_RESP_LEN 11
#define GEN5_BL_READ_APP_INFO_RESP_LEN 31
#define GEN5_CMD_CALIBRATE 0x28
#define CYAPA_SENSING_MODE_MUTUAL_CAP_FINE 0x00
#define CYAPA_SENSING_MODE_SELF_CAP 0x02
#define GEN5_CMD_RETRIEVE_DATA_STRUCTURE 0x24
#define GEN5_RETRIEVE_MUTUAL_PWC_DATA 0x00
#define GEN5_RETRIEVE_SELF_CAP_PWC_DATA 0x01
#define GEN5_RETRIEVE_DATA_ELEMENT_SIZE_MASK 0x07
#define GEN5_CMD_EXECUTE_PANEL_SCAN 0x2a
#define GEN5_CMD_RETRIEVE_PANEL_SCAN 0x2b
#define GEN5_PANEL_SCAN_MUTUAL_RAW_DATA 0x00
#define GEN5_PANEL_SCAN_MUTUAL_BASELINE 0x01
#define GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT 0x02
#define GEN5_PANEL_SCAN_SELF_RAW_DATA 0x03
#define GEN5_PANEL_SCAN_SELF_BASELINE 0x04
#define GEN5_PANEL_SCAN_SELF_DIFFCOUNT 0x05
/* The offset only valid for reterive PWC and panel scan commands */
#define GEN5_RESP_DATA_STRUCTURE_OFFSET 10
#define GEN5_PWC_DATA_ELEMENT_SIZE_MASK 0x07
#define GEN5_NUMBER_OF_TOUCH_OFFSET 5
#define GEN5_NUMBER_OF_TOUCH_MASK 0x1f
#define GEN5_BUTTONS_OFFSET 5
#define GEN5_BUTTONS_MASK 0x0f
#define GEN5_GET_EVENT_ID(reg) (((reg) >> 5) & 0x03)
#define GEN5_GET_TOUCH_ID(reg) ((reg) & 0x1f)
#define GEN5_PRODUCT_FAMILY_MASK 0xf000
#define GEN5_PRODUCT_FAMILY_TRACKPAD 0x1000
#define TSG_INVALID_CMD 0xff
struct cyapa_gen5_touch_record {
/*
* Bit 7 - 3: reserved
* Bit 2 - 0: touch type;
* 0 : standard finger;
* 1 - 15 : reserved.
*/
u8 touch_type;
/*
* Bit 7: indicates touch liftoff status.
* 0 : touch is currently on the panel.
* 1 : touch record indicates a liftoff.
* Bit 6 - 5: indicates an event associated with this touch instance
* 0 : no event
* 1 : touchdown
* 2 : significant displacement (> active distance)
* 3 : liftoff (record reports last known coordinates)
* Bit 4 - 0: An arbitrary ID tag associated with a finger
* to allow tracking a touch as it moves around the panel.
*/
u8 touch_tip_event_id;
/* Bit 7 - 0 of X-axis coordinate of the touch in pixel. */
u8 x_lo;
/* Bit 15 - 8 of X-axis coordinate of the touch in pixel. */
u8 x_hi;
/* Bit 7 - 0 of Y-axis coordinate of the touch in pixel. */
u8 y_lo;
/* Bit 15 - 8 of Y-axis coordinate of the touch in pixel. */
u8 y_hi;
/* Touch intensity in counts, pressure value. */
u8 z;
/*
* The length of the major axis of the ellipse of contact between
* the finger and the panel (ABS_MT_TOUCH_MAJOR).
*/
u8 major_axis_len;
/*
* The length of the minor axis of the ellipse of contact between
* the finger and the panel (ABS_MT_TOUCH_MINOR).
*/
u8 minor_axis_len;
/*
* The length of the major axis of the approaching tool.
* (ABS_MT_WIDTH_MAJOR)
*/
u8 major_tool_len;
/*
* The length of the minor axis of the approaching tool.
* (ABS_MT_WIDTH_MINOR)
*/
u8 minor_tool_len;
/*
* The angle between the panel vertical axis and
* the major axis of the contact ellipse. This value is an 8-bit
* signed integer. The range is -127 to +127 (corresponding to
* -90 degree and +90 degree respectively).
* The positive direction is clockwise from the vertical axis.
* If the ellipse of contact degenerates into a circle,
* orientation is reported as 0.
*/
u8 orientation;
} __packed;
struct cyapa_gen5_report_data {
u8 report_head[GEN5_TOUCH_REPORT_HEAD_SIZE];
struct cyapa_gen5_touch_record touch_records[10];
} __packed;
struct cyapa_tsg_bin_image_head {
u8 head_size; /* Unit: bytes, including itself. */
u8 ttda_driver_major_version; /* Reserved as 0. */
u8 ttda_driver_minor_version; /* Reserved as 0. */
u8 fw_major_version;
u8 fw_minor_version;
u8 fw_revision_control_number[8];
} __packed;
struct cyapa_tsg_bin_image_data_record {
u8 flash_array_id;
__be16 row_number;
/* The number of bytes of flash data contained in this record. */
__be16 record_len;
/* The flash program data. */
u8 record_data[CYAPA_TSG_FW_ROW_SIZE];
} __packed;
struct cyapa_tsg_bin_image {
struct cyapa_tsg_bin_image_head image_head;
struct cyapa_tsg_bin_image_data_record records[0];
} __packed;
struct gen5_bl_packet_start {
u8 sop; /* Start of packet, must be 01h */
u8 cmd_code;
__le16 data_length; /* Size of data parameter start from data[0] */
} __packed;
struct gen5_bl_packet_end {
__le16 crc;
u8 eop; /* End of packet, must be 17h */
} __packed;
struct gen5_bl_cmd_head {
__le16 addr; /* Output report register address, must be 0004h */
/* Size of packet not including output report register address */
__le16 length;
u8 report_id; /* Bootloader output report id, must be 40h */
u8 rsvd; /* Reserved, must be 0 */
struct gen5_bl_packet_start packet_start;
u8 data[0]; /* Command data variable based on commands */
} __packed;
/* Initiate bootload command data structure. */
struct gen5_bl_initiate_cmd_data {
/* Key must be "A5h 01h 02h 03h FFh FEh FDh 5Ah" */
u8 key[CYAPA_TSG_BL_KEY_SIZE];
u8 metadata_raw_parameter[CYAPA_TSG_FLASH_MAP_METADATA_SIZE];
__le16 metadata_crc;
} __packed;
struct gen5_bl_metadata_row_params {
__le16 size;
__le16 maximum_size;
__le32 app_start;
__le16 app_len;
__le16 app_crc;
__le32 app_entry;
__le32 upgrade_start;
__le16 upgrade_len;
__le16 entry_row_crc;
u8 padding[36]; /* Padding data must be 0 */
__le16 metadata_crc; /* CRC starts at offset of 60 */
} __packed;
/* Bootload program and verify row command data structure */
struct gen5_bl_flash_row_head {
u8 flash_array_id;
__le16 flash_row_id;
u8 flash_data[0];
} __packed;
struct gen5_app_cmd_head {
__le16 addr; /* Output report register address, must be 0004h */
/* Size of packet not including output report register address */
__le16 length;
u8 report_id; /* Application output report id, must be 2Fh */
u8 rsvd; /* Reserved, must be 0 */
/*
* Bit 7: reserved, must be 0.
* Bit 6-0: command code.
*/
u8 cmd_code;
u8 parameter_data[0]; /* Parameter data variable based on cmd_code */
} __packed;
/* Application get/set parameter command data structure */
struct gen5_app_set_parameter_data {
u8 parameter_id;
u8 parameter_size;
__le32 value;
} __packed;
struct gen5_app_get_parameter_data {
u8 parameter_id;
} __packed;
struct gen5_retrieve_panel_scan_data {
__le16 read_offset;
__le16 read_elements;
u8 data_id;
} __packed;
/* Variables to record latest gen5 trackpad power states. */
#define GEN5_DEV_SET_PWR_STATE(cyapa, s) ((cyapa)->dev_pwr_mode = (s))
#define GEN5_DEV_GET_PWR_STATE(cyapa) ((cyapa)->dev_pwr_mode)
#define GEN5_DEV_SET_SLEEP_TIME(cyapa, t) ((cyapa)->dev_sleep_time = (t))
#define GEN5_DEV_GET_SLEEP_TIME(cyapa) ((cyapa)->dev_sleep_time)
#define GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) \
(((cyapa)->dev_sleep_time) == UNINIT_SLEEP_TIME)
static u8 cyapa_gen5_bl_cmd_key[] = { 0xa5, 0x01, 0x02, 0x03,
0xff, 0xfe, 0xfd, 0x5a };
static int cyapa_gen5_initialize(struct cyapa *cyapa)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
init_completion(&gen5_pip->cmd_ready);
atomic_set(&gen5_pip->cmd_issued, 0);
mutex_init(&gen5_pip->cmd_lock);
gen5_pip->resp_sort_func = NULL;
gen5_pip->in_progress_cmd = TSG_INVALID_CMD;
gen5_pip->resp_data = NULL;
gen5_pip->resp_len = NULL;
cyapa->dev_pwr_mode = UNINIT_PWR_MODE;
cyapa->dev_sleep_time = UNINIT_SLEEP_TIME;
return 0;
}
/* Return negative errno, or else the number of bytes read. */
static ssize_t cyapa_i2c_pip_read(struct cyapa *cyapa, u8 *buf, size_t size)
{
int ret;
if (size == 0)
return 0;
if (!buf || size > CYAPA_REG_MAP_SIZE)
return -EINVAL;
ret = i2c_master_recv(cyapa->client, buf, size);
if (ret != size)
return (ret < 0) ? ret : -EIO;
return size;
}
/**
* Return a negative errno code else zero on success.
*/
static ssize_t cyapa_i2c_pip_write(struct cyapa *cyapa, u8 *buf, size_t size)
{
int ret;
if (!buf || !size)
return -EINVAL;
ret = i2c_master_send(cyapa->client, buf, size);
if (ret != size)
return (ret < 0) ? ret : -EIO;
return 0;
}
/**
* This function is aimed to dump all not read data in Gen5 trackpad
* before send any command, otherwise, the interrupt line will be blocked.
*/
static int cyapa_empty_pip_output_data(struct cyapa *cyapa,
u8 *buf, int *len, cb_sort func)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int length;
int report_count;
int empty_count;
int buf_len;
int error;
buf_len = 0;
if (len) {
buf_len = (*len < CYAPA_REG_MAP_SIZE) ?
*len : CYAPA_REG_MAP_SIZE;
*len = 0;
}
report_count = 8; /* max 7 pending data before command response data */
empty_count = 0;
do {
/*
* Depending on testing in cyapa driver, there are max 5 "02 00"
* packets between two valid buffered data report in firmware.
* So in order to dump all buffered data out and
* make interrupt line release for reassert again,
* we must set the empty_count check value bigger than 5 to
* make it work. Otherwise, in some situation,
* the interrupt line may unable to reactive again,
* which will cause trackpad device unable to
* report data any more.
* for example, it may happen in EFT and ESD testing.
*/
if (empty_count > 5)
return 0;
error = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf,
GEN5_RESP_LENGTH_SIZE);
if (error < 0)
return error;
length = get_unaligned_le16(gen5_pip->empty_buf);
if (length == GEN5_RESP_LENGTH_SIZE) {
empty_count++;
continue;
} else if (length > CYAPA_REG_MAP_SIZE) {
/* Should not happen */
return -EINVAL;
} else if (length == 0) {
/* Application or bootloader launch data polled out. */
length = GEN5_RESP_LENGTH_SIZE;
if (buf && buf_len && func &&
func(cyapa, gen5_pip->empty_buf, length)) {
length = min(buf_len, length);
memcpy(buf, gen5_pip->empty_buf, length);
*len = length;
/* Response found, success. */
return 0;
}
continue;
}
error = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, length);
if (error < 0)
return error;
report_count--;
empty_count = 0;
length = get_unaligned_le16(gen5_pip->empty_buf);
if (length <= GEN5_RESP_LENGTH_SIZE) {
empty_count++;
} else if (buf && buf_len && func &&
func(cyapa, gen5_pip->empty_buf, length)) {
length = min(buf_len, length);
memcpy(buf, gen5_pip->empty_buf, length);
*len = length;
/* Response found, success. */
return 0;
}
error = -EINVAL;
} while (report_count);
return error;
}
static int cyapa_do_i2c_pip_cmd_irq_sync(
struct cyapa *cyapa,
u8 *cmd, size_t cmd_len,
unsigned long timeout)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int error;
/* Wait for interrupt to set ready completion */
init_completion(&gen5_pip->cmd_ready);
atomic_inc(&gen5_pip->cmd_issued);
error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len);
if (error) {
atomic_dec(&gen5_pip->cmd_issued);
return (error < 0) ? error : -EIO;
}
/* Wait for interrupt to indicate command is completed. */
timeout = wait_for_completion_timeout(&gen5_pip->cmd_ready,
msecs_to_jiffies(timeout));
if (timeout == 0) {
atomic_dec(&gen5_pip->cmd_issued);
return -ETIMEDOUT;
}
return 0;
}
static int cyapa_do_i2c_pip_cmd_polling(
struct cyapa *cyapa,
u8 *cmd, size_t cmd_len,
u8 *resp_data, int *resp_len,
unsigned long timeout,
cb_sort func)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int tries;
int length;
int error;
atomic_inc(&gen5_pip->cmd_issued);
error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len);
if (error) {
atomic_dec(&gen5_pip->cmd_issued);
return error < 0 ? error : -EIO;
}
length = resp_len ? *resp_len : 0;
if (resp_data && resp_len && length != 0 && func) {
tries = timeout / 5;
do {
usleep_range(3000, 5000);
*resp_len = length;
error = cyapa_empty_pip_output_data(cyapa,
resp_data, resp_len, func);
if (error || *resp_len == 0)
continue;
else
break;
} while (--tries > 0);
if ((error || *resp_len == 0) || tries <= 0)
error = error ? error : -ETIMEDOUT;
}
atomic_dec(&gen5_pip->cmd_issued);
return error;
}
static int cyapa_i2c_pip_cmd_irq_sync(
struct cyapa *cyapa,
u8 *cmd, int cmd_len,
u8 *resp_data, int *resp_len,
unsigned long timeout,
cb_sort func,
bool irq_mode)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int error;
if (!cmd || !cmd_len)
return -EINVAL;
/* Commands must be serialized. */
error = mutex_lock_interruptible(&gen5_pip->cmd_lock);
if (error)
return error;
gen5_pip->resp_sort_func = func;
gen5_pip->resp_data = resp_data;
gen5_pip->resp_len = resp_len;
if (cmd_len >= GEN5_MIN_APP_CMD_LENGTH &&
cmd[4] == GEN5_APP_CMD_REPORT_ID) {
/* Application command */
gen5_pip->in_progress_cmd = cmd[6] & 0x7f;
} else if (cmd_len >= GEN5_MIN_BL_CMD_LENGTH &&
cmd[4] == GEN5_BL_CMD_REPORT_ID) {
/* Bootloader command */
gen5_pip->in_progress_cmd = cmd[7];
}
/* Send command data, wait and read output response data's length. */
if (irq_mode) {
gen5_pip->is_irq_mode = true;
error = cyapa_do_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
timeout);
if (error == -ETIMEDOUT && resp_data &&
resp_len && *resp_len != 0 && func) {
/*
* For some old version, there was no interrupt for
* the command response data, so need to poll here
* to try to get the response data.
*/
error = cyapa_empty_pip_output_data(cyapa,
resp_data, resp_len, func);
if (error || *resp_len == 0)
error = error ? error : -ETIMEDOUT;
}
} else {
gen5_pip->is_irq_mode = false;
error = cyapa_do_i2c_pip_cmd_polling(cyapa, cmd, cmd_len,
resp_data, resp_len, timeout, func);
}
gen5_pip->resp_sort_func = NULL;
gen5_pip->resp_data = NULL;
gen5_pip->resp_len = NULL;
gen5_pip->in_progress_cmd = TSG_INVALID_CMD;
mutex_unlock(&gen5_pip->cmd_lock);
return error;
}
static bool cyapa_gen5_sort_tsg_pip_bl_resp_data(struct cyapa *cyapa,
u8 *data, int len)
{
if (!data || len < GEN5_MIN_BL_RESP_LENGTH)
return false;
/* Bootloader input report id 30h */
if (data[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_BL_RESP_REPORT_ID &&
data[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY &&
data[GEN5_RESP_BL_SOP_OFFSET] == GEN5_SOP_KEY)
return true;
return false;
}
static bool cyapa_gen5_sort_tsg_pip_app_resp_data(struct cyapa *cyapa,
u8 *data, int len)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int resp_len;
if (!data || len < GEN5_MIN_APP_RESP_LENGTH)
return false;
if (data[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_APP_RESP_REPORT_ID &&
data[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY) {
resp_len = get_unaligned_le16(&data[GEN5_RESP_LENGTH_OFFSET]);
if (GET_GEN5_CMD_CODE(data[GEN5_RESP_APP_CMD_OFFSET]) == 0x00 &&
resp_len == GEN5_UNSUPPORTED_CMD_RESP_LENGTH &&
data[5] == gen5_pip->in_progress_cmd) {
/* Unsupported command code */
return false;
} else if (GET_GEN5_CMD_CODE(data[GEN5_RESP_APP_CMD_OFFSET]) ==
gen5_pip->in_progress_cmd) {
/* Correct command response received */
return true;
}
}
return false;
}
static bool cyapa_gen5_sort_application_launch_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
return false;
/*
* After reset or power on, trackpad device always sets to 0x00 0x00
* to indicate a reset or power on event.
*/
if (buf[0] == 0 && buf[1] == 0)
return true;
return false;
}
static bool cyapa_gen5_sort_hid_descriptor_data(struct cyapa *cyapa,
u8 *buf, int len)
{
int resp_len;
int max_output_len;
/* Check hid descriptor. */
if (len != GEN5_HID_DESCRIPTOR_SIZE)
return false;
resp_len = get_unaligned_le16(&buf[GEN5_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&buf[16]);
if (resp_len == GEN5_HID_DESCRIPTOR_SIZE) {
if (buf[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_BL_HID_REPORT_ID &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Descriptor */
return true;
} else if ((buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_HID_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Descriptor */
return true;
}
}
return false;
}
static bool cyapa_gen5_sort_deep_sleep_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (len == GEN5_DEEP_SLEEP_RESP_LENGTH &&
buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_DEEP_SLEEP_REPORT_ID &&
(buf[4] & GEN5_DEEP_SLEEP_OPCODE_MASK) ==
GEN5_DEEP_SLEEP_OPCODE)
return true;
return false;
}
static int gen5_idle_state_parse(struct cyapa *cyapa)
{
u8 resp_data[GEN5_HID_DESCRIPTOR_SIZE];
int max_output_len;
int length;
u8 cmd[2];
int ret;
int error;
/*
* Dump all buffered data firstly for the situation
* when the trackpad is just power on the cyapa go here.
*/
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
memset(resp_data, 0, sizeof(resp_data));
ret = cyapa_i2c_pip_read(cyapa, resp_data, 3);
if (ret != 3)
return ret < 0 ? ret : -EIO;
length = get_unaligned_le16(&resp_data[GEN5_RESP_LENGTH_OFFSET]);
if (length == GEN5_RESP_LENGTH_SIZE) {
/* Normal state of Gen5 with no data to respose */
cyapa->gen = CYAPA_GEN5;
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
/* Read description from trackpad device */
cmd[0] = 0x01;
cmd[1] = 0x00;
length = GEN5_HID_DESCRIPTOR_SIZE;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, GEN5_RESP_LENGTH_SIZE,
resp_data, &length,
300,
cyapa_gen5_sort_hid_descriptor_data,
false);
if (error)
return error;
length = get_unaligned_le16(
&resp_data[GEN5_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&resp_data[16]);
if ((length == GEN5_HID_DESCRIPTOR_SIZE ||
length == GEN5_RESP_LENGTH_SIZE) &&
(resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_HID_REPORT_ID) &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Description read */
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if ((length == GEN5_HID_DESCRIPTOR_SIZE ||
length == GEN5_RESP_LENGTH_SIZE) &&
(resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_HID_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Description read */
cyapa->state = CYAPA_STATE_GEN5_APP;
} else {
/* Should not happen!!! */
cyapa->state = CYAPA_STATE_NO_DEVICE;
}
}
return 0;
}
static int gen5_hid_description_header_parse(struct cyapa *cyapa, u8 *reg_data)
{
int length;
u8 resp_data[32];
int max_output_len;
int ret;
/* 0x20 0x00 0xF7 is Gen5 Application HID Description Header;
* 0x20 0x00 0xFF is Gen5 Bootloader HID Description Header.
*
* Must read HID Description content through out,
* otherwise Gen5 trackpad cannot response next command
* or report any touch or button data.
*/
ret = cyapa_i2c_pip_read(cyapa, resp_data,
GEN5_HID_DESCRIPTOR_SIZE);
if (ret != GEN5_HID_DESCRIPTOR_SIZE)
return ret < 0 ? ret : -EIO;
length = get_unaligned_le16(&resp_data[GEN5_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&resp_data[16]);
if (length == GEN5_RESP_LENGTH_SIZE) {
if (reg_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_HID_REPORT_ID) {
/*
* BL mode HID Description has been previously
* read out.
*/
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else {
/*
* APP mode HID Description has been previously
* read out.
*/
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
}
} else if (length == GEN5_HID_DESCRIPTOR_SIZE &&
resp_data[2] == GEN5_BL_HID_REPORT_ID &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Description read. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (length == GEN5_HID_DESCRIPTOR_SIZE &&
(resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_HID_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Description read. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
} else {
/* Should not happen!!! */
cyapa->state = CYAPA_STATE_NO_DEVICE;
}
return 0;
}
static int gen5_report_data_header_parse(struct cyapa *cyapa, u8 *reg_data)
{
int length;
length = get_unaligned_le16(®_data[GEN5_RESP_LENGTH_OFFSET]);
switch (reg_data[GEN5_RESP_REPORT_ID_OFFSET]) {
case GEN5_TOUCH_REPORT_ID:
if (length < GEN5_TOUCH_REPORT_HEAD_SIZE ||
length > GEN5_TOUCH_REPORT_MAX_SIZE)
return -EINVAL;
break;
case GEN5_BTN_REPORT_ID:
case GEN5_OLD_PUSH_BTN_REPORT_ID:
case GEN5_PUSH_BTN_REPORT_ID:
if (length < GEN5_BTN_REPORT_HEAD_SIZE ||
length > GEN5_BTN_REPORT_MAX_SIZE)
return -EINVAL;
break;
case GEN5_WAKEUP_EVENT_REPORT_ID:
if (length != GEN5_WAKEUP_EVENT_SIZE)
return -EINVAL;
break;
default:
return -EINVAL;
}
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
return 0;
}
static int gen5_cmd_resp_header_parse(struct cyapa *cyapa, u8 *reg_data)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int length;
int ret;
/*
* Must read report data through out,
* otherwise Gen5 trackpad cannot response next command
* or report any touch or button data.
*/
length = get_unaligned_le16(®_data[GEN5_RESP_LENGTH_OFFSET]);
ret = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, length);
if (ret != length)
return ret < 0 ? ret : -EIO;
if (length == GEN5_RESP_LENGTH_SIZE) {
/* Previous command has read the data through out. */
if (reg_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID) {
/* Gen5 BL command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else {
/* Gen5 APP command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
}
} else if ((gen5_pip->empty_buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID) &&
(gen5_pip->empty_buf[GEN5_RESP_RSVD_OFFSET] ==
GEN5_RESP_RSVD_KEY) &&
(gen5_pip->empty_buf[GEN5_RESP_BL_SOP_OFFSET] ==
GEN5_SOP_KEY) &&
(gen5_pip->empty_buf[length - 1] ==
GEN5_EOP_KEY)) {
/* Gen5 BL command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (gen5_pip->empty_buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_APP_RESP_REPORT_ID &&
gen5_pip->empty_buf[GEN5_RESP_RSVD_OFFSET] ==
GEN5_RESP_RSVD_KEY) {
/* Gen5 APP command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
} else {
/* Should not happen!!! */
cyapa->state = CYAPA_STATE_NO_DEVICE;
}
return 0;
}
static int cyapa_gen5_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
{
int length;
if (!reg_data || len < 3)
return -EINVAL;
cyapa->state = CYAPA_STATE_NO_DEVICE;
/* Parse based on Gen5 characteristic registers and bits */
length = get_unaligned_le16(®_data[GEN5_RESP_LENGTH_OFFSET]);
if (length == 0 || length == GEN5_RESP_LENGTH_SIZE) {
gen5_idle_state_parse(cyapa);
} else if (length == GEN5_HID_DESCRIPTOR_SIZE &&
(reg_data[2] == GEN5_BL_HID_REPORT_ID ||
reg_data[2] == GEN5_APP_HID_REPORT_ID)) {
gen5_hid_description_header_parse(cyapa, reg_data);
} else if ((length == GEN5_APP_REPORT_DESCRIPTOR_SIZE ||
length == GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE) &&
reg_data[2] == GEN5_APP_REPORT_DESCRIPTOR_ID) {
/* 0xEE 0x00 0xF6 is Gen5 APP report description header. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_APP;
} else if (length == GEN5_BL_REPORT_DESCRIPTOR_SIZE &&
reg_data[2] == GEN5_BL_REPORT_DESCRIPTOR_ID) {
/* 0x1D 0x00 0xFE is Gen5 BL report descriptior header. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (reg_data[2] == GEN5_TOUCH_REPORT_ID ||
reg_data[2] == GEN5_BTN_REPORT_ID ||
reg_data[2] == GEN5_OLD_PUSH_BTN_REPORT_ID ||
reg_data[2] == GEN5_PUSH_BTN_REPORT_ID ||
reg_data[2] == GEN5_WAKEUP_EVENT_REPORT_ID) {
gen5_report_data_header_parse(cyapa, reg_data);
} else if (reg_data[2] == GEN5_BL_RESP_REPORT_ID ||
reg_data[2] == GEN5_APP_RESP_REPORT_ID) {
gen5_cmd_resp_header_parse(cyapa, reg_data);
}
if (cyapa->gen == CYAPA_GEN5) {
/*
* Must read the content (e.g.: report description and so on)
* from trackpad device throughout. Otherwise,
* Gen5 trackpad cannot response to next command or
* report any touch or button data later.
*/
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
if (cyapa->state == CYAPA_STATE_GEN5_APP ||
cyapa->state == CYAPA_STATE_GEN5_BL)
return 0;
}
return -EAGAIN;
}
static int cyapa_gen5_bl_initiate(struct cyapa *cyapa,
const struct firmware *fw)
{
struct cyapa_tsg_bin_image *image;
struct gen5_bl_cmd_head *bl_cmd_head;
struct gen5_bl_packet_start *bl_packet_start;
struct gen5_bl_initiate_cmd_data *cmd_data;
struct gen5_bl_packet_end *bl_packet_end;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
int cmd_len;
u16 cmd_data_len;
u16 cmd_crc = 0;
u16 meta_data_crc = 0;
u8 resp_data[11];
int resp_len;
int records_num;
u8 *data;
int error;
/* Try to dump all buffered report data before any send command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
bl_cmd_head = (struct gen5_bl_cmd_head *)cmd;
cmd_data_len = CYAPA_TSG_BL_KEY_SIZE + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE;
cmd_len = sizeof(struct gen5_bl_cmd_head) + cmd_data_len +
sizeof(struct gen5_bl_packet_end);
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length);
bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID;
bl_packet_start = &bl_cmd_head->packet_start;
bl_packet_start->sop = GEN5_SOP_KEY;
bl_packet_start->cmd_code = GEN5_BL_CMD_INITIATE_BL;
/* 8 key bytes and 128 bytes block size */
put_unaligned_le16(cmd_data_len, &bl_packet_start->data_length);
cmd_data = (struct gen5_bl_initiate_cmd_data *)bl_cmd_head->data;
memcpy(cmd_data->key, cyapa_gen5_bl_cmd_key, CYAPA_TSG_BL_KEY_SIZE);
/* Copy 60 bytes Meta Data Row Parameters */
image = (struct cyapa_tsg_bin_image *)fw->data;
records_num = (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) /
sizeof(struct cyapa_tsg_bin_image_data_record);
/* APP_INTEGRITY row is always the last row block */
data = image->records[records_num - 1].record_data;
memcpy(cmd_data->metadata_raw_parameter, data,
CYAPA_TSG_FLASH_MAP_METADATA_SIZE);
meta_data_crc = crc_itu_t(0xffff, cmd_data->metadata_raw_parameter,
CYAPA_TSG_FLASH_MAP_METADATA_SIZE);
put_unaligned_le16(meta_data_crc, &cmd_data->metadata_crc);
bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data +
cmd_data_len);
cmd_crc = crc_itu_t(0xffff, (u8 *)bl_packet_start,
sizeof(struct gen5_bl_packet_start) + cmd_data_len);
put_unaligned_le16(cmd_crc, &bl_packet_end->crc);
bl_packet_end->eop = GEN5_EOP_KEY;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, cmd_len,
resp_data, &resp_len, 12000,
cyapa_gen5_sort_tsg_pip_bl_resp_data, true);
if (error || resp_len != GEN5_BL_INITIATE_RESP_LEN ||
resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error ? error : -EAGAIN;
return 0;
}
static bool cyapa_gen5_sort_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len)
{
if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
return false;
if (buf[0] == 0 && buf[1] == 0)
return true;
/* Exit bootloader failed for some reason. */
if (len == GEN5_BL_FAIL_EXIT_RESP_LEN &&
buf[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID &&
buf[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY &&
buf[GEN5_RESP_BL_SOP_OFFSET] == GEN5_SOP_KEY &&
buf[10] == GEN5_EOP_KEY)
return true;
return false;
}
static int cyapa_gen5_bl_exit(struct cyapa *cyapa)
{
u8 bl_gen5_bl_exit[] = { 0x04, 0x00,
0x0B, 0x00, 0x40, 0x00, 0x01, 0x3b, 0x00, 0x00,
0x20, 0xc7, 0x17
};
u8 resp_data[11];
int resp_len;
int error;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
bl_gen5_bl_exit, sizeof(bl_gen5_bl_exit),
resp_data, &resp_len,
5000, cyapa_gen5_sort_bl_exit_data, false);
if (error)
return error;
if (resp_len == GEN5_BL_FAIL_EXIT_RESP_LEN ||
resp_data[GEN5_RESP_REPORT_ID_OFFSET] ==
GEN5_BL_RESP_REPORT_ID)
return -EAGAIN;
if (resp_data[0] == 0x00 && resp_data[1] == 0x00)
return 0;
return -ENODEV;
}
static int cyapa_gen5_bl_enter(struct cyapa *cyapa)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2F, 0x00, 0x01 };
u8 resp_data[2];
int resp_len;
int error;
error = cyapa_poll_state(cyapa, 500);
if (error < 0)
return error;
if (cyapa->gen != CYAPA_GEN5)
return -EINVAL;
/* Already in Gen5 BL. Skipping exit. */
if (cyapa->state == CYAPA_STATE_GEN5_BL)
return 0;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return -EAGAIN;
/* Try to dump all buffered report data before any send command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
/*
* Send bootloader enter command to trackpad device,
* after enter bootloader, the response data is two bytes of 0x00 0x00.
*/
resp_len = sizeof(resp_data);
memset(resp_data, 0, resp_len);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
5000, cyapa_gen5_sort_application_launch_data,
true);
if (error || resp_data[0] != 0x00 || resp_data[1] != 0x00)
return error < 0 ? error : -EAGAIN;
cyapa->operational = false;
cyapa->state = CYAPA_STATE_GEN5_BL;
return 0;
}
static int cyapa_gen5_check_fw(struct cyapa *cyapa, const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
const struct cyapa_tsg_bin_image *image = (const void *)fw->data;
const struct cyapa_tsg_bin_image_data_record *app_integrity;
const struct gen5_bl_metadata_row_params *metadata;
size_t flash_records_count;
u32 fw_app_start, fw_upgrade_start;
u16 fw_app_len, fw_upgrade_len;
u16 app_crc;
u16 app_integrity_crc;
int record_index;
int i;
flash_records_count = (fw->size -
sizeof(struct cyapa_tsg_bin_image_head)) /
sizeof(struct cyapa_tsg_bin_image_data_record);
/*
* APP_INTEGRITY row is always the last row block,
* and the row id must be 0x01ff.
*/
app_integrity = &image->records[flash_records_count - 1];
if (app_integrity->flash_array_id != 0x00 ||
get_unaligned_be16(&app_integrity->row_number) != 0x01ff) {
dev_err(dev, "%s: invalid app_integrity data.\n", __func__);
return -EINVAL;
}
metadata = (const void *)app_integrity->record_data;
/* Verify app_integrity crc */
app_integrity_crc = crc_itu_t(0xffff, app_integrity->record_data,
CYAPA_TSG_APP_INTEGRITY_SIZE);
if (app_integrity_crc != get_unaligned_le16(&metadata->metadata_crc)) {
dev_err(dev, "%s: invalid app_integrity crc.\n", __func__);
return -EINVAL;
}
fw_app_start = get_unaligned_le32(&metadata->app_start);
fw_app_len = get_unaligned_le16(&metadata->app_len);
fw_upgrade_start = get_unaligned_le32(&metadata->upgrade_start);
fw_upgrade_len = get_unaligned_le16(&metadata->upgrade_len);
if (fw_app_start % CYAPA_TSG_FW_ROW_SIZE ||
fw_app_len % CYAPA_TSG_FW_ROW_SIZE ||
fw_upgrade_start % CYAPA_TSG_FW_ROW_SIZE ||
fw_upgrade_len % CYAPA_TSG_FW_ROW_SIZE) {
dev_err(dev, "%s: invalid image alignment.\n", __func__);
return -EINVAL;
}
/*
* Verify application image CRC
*/
record_index = fw_app_start / CYAPA_TSG_FW_ROW_SIZE -
CYAPA_TSG_IMG_START_ROW_NUM;
app_crc = 0xffffU;
for (i = 0; i < fw_app_len / CYAPA_TSG_FW_ROW_SIZE; i++) {
const u8 *data = image->records[record_index + i].record_data;
app_crc = crc_itu_t(app_crc, data, CYAPA_TSG_FW_ROW_SIZE);
}
if (app_crc != get_unaligned_le16(&metadata->app_crc)) {
dev_err(dev, "%s: invalid firmware app crc check.\n", __func__);
return -EINVAL;
}
return 0;
}
static int cyapa_gen5_write_fw_block(struct cyapa *cyapa,
struct cyapa_tsg_bin_image_data_record *flash_record)
{
struct gen5_bl_cmd_head *bl_cmd_head;
struct gen5_bl_packet_start *bl_packet_start;
struct gen5_bl_flash_row_head *flash_row_head;
struct gen5_bl_packet_end *bl_packet_end;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
u16 cmd_len;
u8 flash_array_id;
u16 flash_row_id;
u16 record_len;
u8 *record_data;
u16 data_len;
u16 crc;
u8 resp_data[11];
int resp_len;
int error;
flash_array_id = flash_record->flash_array_id;
flash_row_id = get_unaligned_be16(&flash_record->row_number);
record_len = get_unaligned_be16(&flash_record->record_len);
record_data = flash_record->record_data;
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
bl_cmd_head = (struct gen5_bl_cmd_head *)cmd;
bl_packet_start = &bl_cmd_head->packet_start;
cmd_len = sizeof(struct gen5_bl_cmd_head) +
sizeof(struct gen5_bl_flash_row_head) +
CYAPA_TSG_FLASH_MAP_BLOCK_SIZE +
sizeof(struct gen5_bl_packet_end);
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
/* Don't include 2 bytes register address */
put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length);
bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID;
bl_packet_start->sop = GEN5_SOP_KEY;
bl_packet_start->cmd_code = GEN5_BL_CMD_PROGRAM_VERIFY_ROW;
/* 1 (Flash Array ID) + 2 (Flash Row ID) + 128 (flash data) */
data_len = sizeof(struct gen5_bl_flash_row_head) + record_len;
put_unaligned_le16(data_len, &bl_packet_start->data_length);
flash_row_head = (struct gen5_bl_flash_row_head *)bl_cmd_head->data;
flash_row_head->flash_array_id = flash_array_id;
put_unaligned_le16(flash_row_id, &flash_row_head->flash_row_id);
memcpy(flash_row_head->flash_data, record_data, record_len);
bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data +
data_len);
crc = crc_itu_t(0xffff, (u8 *)bl_packet_start,
sizeof(struct gen5_bl_packet_start) + data_len);
put_unaligned_le16(crc, &bl_packet_end->crc);
bl_packet_end->eop = GEN5_EOP_KEY;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_bl_resp_data, true);
if (error || resp_len != GEN5_BL_BLOCK_WRITE_RESP_LEN ||
resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error < 0 ? error : -EAGAIN;
return 0;
}
static int cyapa_gen5_do_fw_update(struct cyapa *cyapa,
const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_tsg_bin_image_data_record *flash_record;
struct cyapa_tsg_bin_image *image =
(struct cyapa_tsg_bin_image *)fw->data;
int flash_records_count;
int i;
int error;
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
flash_records_count =
(fw->size - sizeof(struct cyapa_tsg_bin_image_head)) /
sizeof(struct cyapa_tsg_bin_image_data_record);
/*
* The last flash row 0x01ff has been written through bl_initiate
* command, so DO NOT write flash 0x01ff to trackpad device.
*/
for (i = 0; i < (flash_records_count - 1); i++) {
flash_record = &image->records[i];
error = cyapa_gen5_write_fw_block(cyapa, flash_record);
if (error) {
dev_err(dev, "%s: Gen5 FW update aborted: %d\n",
__func__, error);
return error;
}
}
return 0;
}
static int cyapa_gen5_change_power_state(struct cyapa *cyapa, u8 power_state)
{
u8 cmd[8] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 0x08, 0x01 };
u8 resp_data[6];
int resp_len;
int error;
cmd[7] = power_state;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x08) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen5_set_interval_time(struct cyapa *cyapa,
u8 parameter_id, u16 interval_time)
{
struct gen5_app_cmd_head *app_cmd_head;
struct gen5_app_set_parameter_data *parameter_data;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
int cmd_len;
u8 resp_data[7];
int resp_len;
u8 parameter_size;
int error;
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
parameter_data = (struct gen5_app_set_parameter_data *)
app_cmd_head->parameter_data;
cmd_len = sizeof(struct gen5_app_cmd_head) +
sizeof(struct gen5_app_set_parameter_data);
switch (parameter_id) {
case GEN5_PARAMETER_ACT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_ACT_LFT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_LP_INTRVL_ID:
parameter_size = GEN5_PARAMETER_LP_INTRVL_SIZE;
break;
default:
return -EINVAL;
}
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
/*
* Don't include unused parameter value bytes and
* 2 bytes register address.
*/
put_unaligned_le16(cmd_len - (4 - parameter_size) - 2,
&app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_SET_PARAMETER;
parameter_data->parameter_id = parameter_id;
parameter_data->parameter_size = parameter_size;
put_unaligned_le32((u32)interval_time, ¶meter_data->value);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || resp_data[5] != parameter_id ||
resp_data[6] != parameter_size ||
!VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_SET_PARAMETER))
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen5_get_interval_time(struct cyapa *cyapa,
u8 parameter_id, u16 *interval_time)
{
struct gen5_app_cmd_head *app_cmd_head;
struct gen5_app_get_parameter_data *parameter_data;
u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
int cmd_len;
u8 resp_data[11];
int resp_len;
u8 parameter_size;
u16 mask, i;
int error;
memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
parameter_data = (struct gen5_app_get_parameter_data *)
app_cmd_head->parameter_data;
cmd_len = sizeof(struct gen5_app_cmd_head) +
sizeof(struct gen5_app_get_parameter_data);
*interval_time = 0;
switch (parameter_id) {
case GEN5_PARAMETER_ACT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_ACT_LFT_INTERVL_ID:
parameter_size = GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE;
break;
case GEN5_PARAMETER_LP_INTRVL_ID:
parameter_size = GEN5_PARAMETER_LP_INTRVL_SIZE;
break;
default:
return -EINVAL;
}
put_unaligned_le16(GEN5_HID_DESCRIPTOR_ADDR, &app_cmd_head->addr);
/* Don't include 2 bytes register address */
put_unaligned_le16(cmd_len - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_GET_PARAMETER;
parameter_data->parameter_id = parameter_id;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || resp_data[5] != parameter_id || resp_data[6] == 0 ||
!VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_GET_PARAMETER))
return error < 0 ? error : -EINVAL;
mask = 0;
for (i = 0; i < parameter_size; i++)
mask |= (0xff << (i * 8));
*interval_time = get_unaligned_le16(&resp_data[7]) & mask;
return 0;
}
static int cyapa_gen5_disable_pip_report(struct cyapa *cyapa)
{
struct gen5_app_cmd_head *app_cmd_head;
u8 cmd[10];
u8 resp_data[7];
int resp_len;
int error;
memset(cmd, 0, sizeof(cmd));
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_HID_DESCRIPTOR_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_SET_PARAMETER;
app_cmd_head->parameter_data[0] = GEN5_PARAMETER_DISABLE_PIP_REPORT;
app_cmd_head->parameter_data[1] = 0x01;
app_cmd_head->parameter_data[2] = 0x01;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, false);
if (error || resp_data[5] != GEN5_PARAMETER_DISABLE_PIP_REPORT ||
!VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_SET_PARAMETER) ||
resp_data[6] != 0x01)
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen5_deep_sleep(struct cyapa *cyapa, u8 state)
{
u8 cmd[] = { 0x05, 0x00, 0x00, 0x08};
u8 resp_data[5];
int resp_len;
int error;
cmd[2] = state & GEN5_DEEP_SLEEP_STATE_MASK;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_deep_sleep_data, false);
if (error || ((resp_data[3] & GEN5_DEEP_SLEEP_STATE_MASK) != state))
return -EINVAL;
return 0;
}
static int cyapa_gen5_set_power_mode(struct cyapa *cyapa,
u8 power_mode, u16 sleep_time)
{
struct device *dev = &cyapa->client->dev;
u8 power_state;
int error;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return 0;
/* Dump all the report data before do power mode commmands. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
if (GEN5_DEV_GET_PWR_STATE(cyapa) == UNINIT_PWR_MODE) {
/*
* Assume TP in deep sleep mode when driver is loaded,
* avoid driver unload and reload command IO issue caused by TP
* has been set into deep sleep mode when unloading.
*/
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
}
if (GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) &&
GEN5_DEV_GET_PWR_STATE(cyapa) != PWR_MODE_OFF)
if (cyapa_gen5_get_interval_time(cyapa,
GEN5_PARAMETER_LP_INTRVL_ID,
&cyapa->dev_sleep_time) != 0)
GEN5_DEV_SET_SLEEP_TIME(cyapa, UNINIT_SLEEP_TIME);
if (GEN5_DEV_GET_PWR_STATE(cyapa) == power_mode) {
if (power_mode == PWR_MODE_OFF ||
power_mode == PWR_MODE_FULL_ACTIVE ||
power_mode == PWR_MODE_BTN_ONLY ||
GEN5_DEV_GET_SLEEP_TIME(cyapa) == sleep_time) {
/* Has in correct power mode state, early return. */
return 0;
}
}
if (power_mode == PWR_MODE_OFF) {
error = cyapa_gen5_deep_sleep(cyapa, GEN5_DEEP_SLEEP_STATE_OFF);
if (error) {
dev_err(dev, "enter deep sleep fail: %d\n", error);
return error;
}
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
return 0;
}
/*
* When trackpad in power off mode, it cannot change to other power
* state directly, must be wake up from sleep firstly, then
* continue to do next power sate change.
*/
if (GEN5_DEV_GET_PWR_STATE(cyapa) == PWR_MODE_OFF) {
error = cyapa_gen5_deep_sleep(cyapa, GEN5_DEEP_SLEEP_STATE_ON);
if (error) {
dev_err(dev, "deep sleep wake fail: %d\n", error);
return error;
}
}
if (power_mode == PWR_MODE_FULL_ACTIVE) {
error = cyapa_gen5_change_power_state(cyapa,
GEN5_POWER_STATE_ACTIVE);
if (error) {
dev_err(dev, "change to active fail: %d\n", error);
return error;
}
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_FULL_ACTIVE);
} else if (power_mode == PWR_MODE_BTN_ONLY) {
error = cyapa_gen5_change_power_state(cyapa,
GEN5_POWER_STATE_BTN_ONLY);
if (error) {
dev_err(dev, "fail to button only mode: %d\n", error);
return error;
}
GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_BTN_ONLY);
} else {
/*
* Continue to change power mode even failed to set
* interval time, it won't affect the power mode change.
* except the sleep interval time is not correct.
*/
if (GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) ||
sleep_time != GEN5_DEV_GET_SLEEP_TIME(cyapa))
if (cyapa_gen5_set_interval_time(cyapa,
GEN5_PARAMETER_LP_INTRVL_ID,
sleep_time) == 0)
GEN5_DEV_SET_SLEEP_TIME(cyapa, sleep_time);
if (sleep_time <= GEN5_POWER_READY_MAX_INTRVL_TIME)
power_state = GEN5_POWER_STATE_READY;
else
power_state = GEN5_POWER_STATE_IDLE;
error = cyapa_gen5_change_power_state(cyapa, power_state);
if (error) {
dev_err(dev, "set power state to 0x%02x failed: %d\n",
power_state, error);
return error;
}
/*
* Disable pip report for a little time, firmware will
* re-enable it automatically. It's used to fix the issue
* that trackpad unable to report signal to wake system up
* in the special situation that system is in suspending, and
* at the same time, user touch trackpad to wake system up.
* This function can avoid the data to be buffered when system
* is suspending which may cause interrupt line unable to be
* asserted again.
*/
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
cyapa_gen5_disable_pip_report(cyapa);
GEN5_DEV_SET_PWR_STATE(cyapa,
cyapa_sleep_time_to_pwr_cmd(sleep_time));
}
return 0;
}
static int cyapa_gen5_resume_scanning(struct cyapa *cyapa)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x04 };
u8 resp_data[6];
int resp_len;
int error;
/* Try to dump all buffered data before doing command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x04))
return -EINVAL;
/* Try to dump all buffered data when resuming scanning. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
return 0;
}
static int cyapa_gen5_suspend_scanning(struct cyapa *cyapa)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x03 };
u8 resp_data[6];
int resp_len;
int error;
/* Try to dump all buffered data before doing command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x03))
return -EINVAL;
/* Try to dump all buffered data when suspending scanning. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
return 0;
}
static int cyapa_gen5_calibrate_pwcs(struct cyapa *cyapa,
u8 calibrate_sensing_mode_type)
{
struct gen5_app_cmd_head *app_cmd_head;
u8 cmd[8];
u8 resp_data[6];
int resp_len;
int error;
/* Try to dump all buffered data before doing command. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
memset(cmd, 0, sizeof(cmd));
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_CALIBRATE;
app_cmd_head->parameter_data[0] = calibrate_sensing_mode_type;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
5000, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_CALIBRATE) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error < 0 ? error : -EAGAIN;
return 0;
}
static ssize_t cyapa_gen5_do_calibrate(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int error, calibrate_error;
/* 1. Suspend Scanning*/
error = cyapa_gen5_suspend_scanning(cyapa);
if (error)
return error;
/* 2. Do mutual capacitance fine calibrate. */
calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa,
CYAPA_SENSING_MODE_MUTUAL_CAP_FINE);
if (calibrate_error)
goto resume_scanning;
/* 3. Do self capacitance calibrate. */
calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa,
CYAPA_SENSING_MODE_SELF_CAP);
if (calibrate_error)
goto resume_scanning;
resume_scanning:
/* 4. Resume Scanning*/
error = cyapa_gen5_resume_scanning(cyapa);
if (error || calibrate_error)
return error ? error : calibrate_error;
return count;
}
static s32 twos_complement_to_s32(s32 value, int num_bits)
{
if (value >> (num_bits - 1))
value |= -1 << num_bits;
return value;
}
static s32 cyapa_parse_structure_data(u8 data_format, u8 *buf, int buf_len)
{
int data_size;
bool big_endian;
bool unsigned_type;
s32 value;
data_size = (data_format & 0x07);
big_endian = ((data_format & 0x10) == 0x00);
unsigned_type = ((data_format & 0x20) == 0x00);
if (buf_len < data_size)
return 0;
switch (data_size) {
case 1:
value = buf[0];
break;
case 2:
if (big_endian)
value = get_unaligned_be16(buf);
else
value = get_unaligned_le16(buf);
break;
case 4:
if (big_endian)
value = get_unaligned_be32(buf);
else
value = get_unaligned_le32(buf);
break;
default:
/* Should not happen, just as default case here. */
value = 0;
break;
}
if (!unsigned_type)
value = twos_complement_to_s32(value, data_size * 8);
return value;
}
static void cyapa_gen5_guess_electrodes(struct cyapa *cyapa,
int *electrodes_rx, int *electrodes_tx)
{
if (cyapa->electrodes_rx != 0) {
*electrodes_rx = cyapa->electrodes_rx;
*electrodes_tx = (cyapa->electrodes_x == *electrodes_rx) ?
cyapa->electrodes_y : cyapa->electrodes_x;
} else {
*electrodes_tx = min(cyapa->electrodes_x, cyapa->electrodes_y);
*electrodes_rx = max(cyapa->electrodes_x, cyapa->electrodes_y);
}
}
/*
* Read all the global mutual or self idac data or mutual or self local PWC
* data based on the @idac_data_type.
* If the input value of @data_size is 0, then means read global mutual or
* self idac data. For read global mutual idac data, @idac_max, @idac_min and
* @idac_ave are in order used to return the max value of global mutual idac
* data, the min value of global mutual idac and the average value of the
* global mutual idac data. For read global self idac data, @idac_max is used
* to return the global self cap idac data in Rx direction, @idac_min is used
* to return the global self cap idac data in Tx direction. @idac_ave is not
* used.
* If the input value of @data_size is not 0, than means read the mutual or
* self local PWC data. The @idac_max, @idac_min and @idac_ave are used to
* return the max, min and average value of the mutual or self local PWC data.
* Note, in order to raed mutual local PWC data, must read invoke this function
* to read the mutual global idac data firstly to set the correct Rx number
* value, otherwise, the read mutual idac and PWC data may not correct.
*/
static int cyapa_gen5_read_idac_data(struct cyapa *cyapa,
u8 cmd_code, u8 idac_data_type, int *data_size,
int *idac_max, int *idac_min, int *idac_ave)
{
struct gen5_app_cmd_head *cmd_head;
u8 cmd[12];
u8 resp_data[256];
int resp_len;
int read_len;
int value;
u16 offset;
int read_elements;
bool read_global_idac;
int sum, count, max_element_cnt;
int tmp_max, tmp_min, tmp_ave, tmp_sum, tmp_count;
int electrodes_rx, electrodes_tx;
int i;
int error;
if (cmd_code != GEN5_CMD_RETRIEVE_DATA_STRUCTURE ||
(idac_data_type != GEN5_RETRIEVE_MUTUAL_PWC_DATA &&
idac_data_type != GEN5_RETRIEVE_SELF_CAP_PWC_DATA) ||
!data_size || !idac_max || !idac_min || !idac_ave)
return -EINVAL;
*idac_max = INT_MIN;
*idac_min = INT_MAX;
sum = count = tmp_count = 0;
electrodes_rx = electrodes_tx = 0;
if (*data_size == 0) {
/*
* Read global idac values firstly.
* Currently, no idac data exceed 4 bytes.
*/
read_global_idac = true;
offset = 0;
*data_size = 4;
tmp_max = INT_MIN;
tmp_min = INT_MAX;
tmp_ave = tmp_sum = tmp_count = 0;
if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
if (cyapa->aligned_electrodes_rx == 0) {
cyapa_gen5_guess_electrodes(cyapa,
&electrodes_rx, &electrodes_tx);
cyapa->aligned_electrodes_rx =
(electrodes_rx + 3) & ~3u;
}
max_element_cnt =
(cyapa->aligned_electrodes_rx + 7) & ~7u;
} else {
max_element_cnt = 2;
}
} else {
read_global_idac = false;
if (*data_size > 4)
*data_size = 4;
/* Calculate the start offset in bytes of local PWC data. */
if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
offset = cyapa->aligned_electrodes_rx * (*data_size);
if (cyapa->electrodes_rx == cyapa->electrodes_x)
electrodes_tx = cyapa->electrodes_y;
else
electrodes_tx = cyapa->electrodes_x;
max_element_cnt = ((cyapa->aligned_electrodes_rx + 7) &
~7u) * electrodes_tx;
} else {
offset = 2;
max_element_cnt = cyapa->electrodes_x +
cyapa->electrodes_y;
max_element_cnt = (max_element_cnt + 3) & ~3u;
}
}
memset(cmd, 0, sizeof(cmd));
cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &cmd_head->length);
cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
cmd_head->cmd_code = cmd_code;
do {
read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) /
(*data_size);
read_elements = min(read_elements, max_element_cnt - count);
read_len = read_elements * (*data_size);
put_unaligned_le16(offset, &cmd_head->parameter_data[0]);
put_unaligned_le16(read_len, &cmd_head->parameter_data[2]);
cmd_head->parameter_data[4] = idac_data_type;
resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data,
true);
if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
!VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
resp_data[6] != idac_data_type)
return (error < 0) ? error : -EAGAIN;
read_len = get_unaligned_le16(&resp_data[7]);
if (read_len == 0)
break;
*data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK);
if (read_len < *data_size)
return -EINVAL;
if (read_global_idac &&
idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
/* Rx's self global idac data. */
*idac_max = cyapa_parse_structure_data(
resp_data[9],
&resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET],
*data_size);
/* Tx's self global idac data. */
*idac_min = cyapa_parse_structure_data(
resp_data[9],
&resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET +
*data_size],
*data_size);
break;
}
/* Read mutual global idac or local mutual/self PWC data. */
offset += read_len;
for (i = 10; i < (read_len + GEN5_RESP_DATA_STRUCTURE_OFFSET);
i += *data_size) {
value = cyapa_parse_structure_data(resp_data[9],
&resp_data[i], *data_size);
*idac_min = min(value, *idac_min);
*idac_max = max(value, *idac_max);
if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA &&
tmp_count < cyapa->aligned_electrodes_rx &&
read_global_idac) {
/*
* The value gap betwen global and local mutual
* idac data must bigger than 50%.
* Normally, global value bigger than 50,
* local values less than 10.
*/
if (!tmp_ave || value > tmp_ave / 2) {
tmp_min = min(value, tmp_min);
tmp_max = max(value, tmp_max);
tmp_sum += value;
tmp_count++;
tmp_ave = tmp_sum / tmp_count;
}
}
sum += value;
count++;
if (count >= max_element_cnt)
goto out;
}
} while (true);
out:
*idac_ave = count ? (sum / count) : 0;
if (read_global_idac &&
idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
if (tmp_count == 0)
return 0;
if (tmp_count == cyapa->aligned_electrodes_rx) {
cyapa->electrodes_rx = cyapa->electrodes_rx ?
cyapa->electrodes_rx : electrodes_rx;
} else if (tmp_count == electrodes_rx) {
cyapa->electrodes_rx = cyapa->electrodes_rx ?
cyapa->electrodes_rx : electrodes_rx;
cyapa->aligned_electrodes_rx = electrodes_rx;
} else {
cyapa->electrodes_rx = cyapa->electrodes_rx ?
cyapa->electrodes_rx : electrodes_tx;
cyapa->aligned_electrodes_rx = tmp_count;
}
*idac_min = tmp_min;
*idac_max = tmp_max;
*idac_ave = tmp_ave;
}
return 0;
}
static int cyapa_gen5_read_mutual_idac_data(struct cyapa *cyapa,
int *gidac_mutual_max, int *gidac_mutual_min, int *gidac_mutual_ave,
int *lidac_mutual_max, int *lidac_mutual_min, int *lidac_mutual_ave)
{
int data_size;
int error;
*gidac_mutual_max = *gidac_mutual_min = *gidac_mutual_ave = 0;
*lidac_mutual_max = *lidac_mutual_min = *lidac_mutual_ave = 0;
data_size = 0;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_MUTUAL_PWC_DATA,
&data_size,
gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave);
if (error)
return error;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_MUTUAL_PWC_DATA,
&data_size,
lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave);
return error;
}
static int cyapa_gen5_read_self_idac_data(struct cyapa *cyapa,
int *gidac_self_rx, int *gidac_self_tx,
int *lidac_self_max, int *lidac_self_min, int *lidac_self_ave)
{
int data_size;
int error;
*gidac_self_rx = *gidac_self_tx = 0;
*lidac_self_max = *lidac_self_min = *lidac_self_ave = 0;
data_size = 0;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_SELF_CAP_PWC_DATA,
&data_size,
lidac_self_max, lidac_self_min, lidac_self_ave);
if (error)
return error;
*gidac_self_rx = *lidac_self_max;
*gidac_self_tx = *lidac_self_min;
error = cyapa_gen5_read_idac_data(cyapa,
GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
GEN5_RETRIEVE_SELF_CAP_PWC_DATA,
&data_size,
lidac_self_max, lidac_self_min, lidac_self_ave);
return error;
}
static ssize_t cyapa_gen5_execute_panel_scan(struct cyapa *cyapa)
{
struct gen5_app_cmd_head *app_cmd_head;
u8 cmd[7];
u8 resp_data[6];
int resp_len;
int error;
memset(cmd, 0, sizeof(cmd));
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = GEN5_CMD_EXECUTE_PANEL_SCAN;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || resp_len != sizeof(resp_data) ||
!VALID_CMD_RESP_HEADER(resp_data,
GEN5_CMD_EXECUTE_PANEL_SCAN) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error ? error : -EAGAIN;
return 0;
}
static int cyapa_gen5_read_panel_scan_raw_data(struct cyapa *cyapa,
u8 cmd_code, u8 raw_data_type, int raw_data_max_num,
int *raw_data_max, int *raw_data_min, int *raw_data_ave,
u8 *buffer)
{
struct gen5_app_cmd_head *app_cmd_head;
struct gen5_retrieve_panel_scan_data *panel_sacn_data;
u8 cmd[12];
u8 resp_data[256]; /* Max bytes can transfer one time. */
int resp_len;
int read_elements;
int read_len;
u16 offset;
s32 value;
int sum, count;
int data_size;
s32 *intp;
int i;
int error;
if (cmd_code != GEN5_CMD_RETRIEVE_PANEL_SCAN ||
(raw_data_type > GEN5_PANEL_SCAN_SELF_DIFFCOUNT) ||
!raw_data_max || !raw_data_min || !raw_data_ave)
return -EINVAL;
intp = (s32 *)buffer;
*raw_data_max = INT_MIN;
*raw_data_min = INT_MAX;
sum = count = 0;
offset = 0;
/* Assume max element size is 4 currently. */
read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) / 4;
read_len = read_elements * 4;
app_cmd_head = (struct gen5_app_cmd_head *)cmd;
put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = cmd_code;
panel_sacn_data = (struct gen5_retrieve_panel_scan_data *)
app_cmd_head->parameter_data;
do {
put_unaligned_le16(offset, &panel_sacn_data->read_offset);
put_unaligned_le16(read_elements,
&panel_sacn_data->read_elements);
panel_sacn_data->data_id = raw_data_type;
resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
!VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
resp_data[6] != raw_data_type)
return error ? error : -EAGAIN;
read_elements = get_unaligned_le16(&resp_data[7]);
if (read_elements == 0)
break;
data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK);
offset += read_elements;
if (read_elements) {
for (i = GEN5_RESP_DATA_STRUCTURE_OFFSET;
i < (read_elements * data_size +
GEN5_RESP_DATA_STRUCTURE_OFFSET);
i += data_size) {
value = cyapa_parse_structure_data(resp_data[9],
&resp_data[i], data_size);
*raw_data_min = min(value, *raw_data_min);
*raw_data_max = max(value, *raw_data_max);
if (intp)
put_unaligned_le32(value, &intp[count]);
sum += value;
count++;
}
}
if (count >= raw_data_max_num)
break;
read_elements = (sizeof(resp_data) -
GEN5_RESP_DATA_STRUCTURE_OFFSET) / data_size;
read_len = read_elements * data_size;
} while (true);
*raw_data_ave = count ? (sum / count) : 0;
return 0;
}
static ssize_t cyapa_gen5_show_baseline(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
int gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave;
int lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave;
int gidac_self_rx, gidac_self_tx;
int lidac_self_max, lidac_self_min, lidac_self_ave;
int raw_cap_mutual_max, raw_cap_mutual_min, raw_cap_mutual_ave;
int raw_cap_self_max, raw_cap_self_min, raw_cap_self_ave;
int mutual_diffdata_max, mutual_diffdata_min, mutual_diffdata_ave;
int self_diffdata_max, self_diffdata_min, self_diffdata_ave;
int mutual_baseline_max, mutual_baseline_min, mutual_baseline_ave;
int self_baseline_max, self_baseline_min, self_baseline_ave;
int error, resume_error;
int size;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return -EBUSY;
/* 1. Suspend Scanning*/
error = cyapa_gen5_suspend_scanning(cyapa);
if (error)
return error;
/* 2. Read global and local mutual IDAC data. */
gidac_self_rx = gidac_self_tx = 0;
error = cyapa_gen5_read_mutual_idac_data(cyapa,
&gidac_mutual_max, &gidac_mutual_min,
&gidac_mutual_ave, &lidac_mutual_max,
&lidac_mutual_min, &lidac_mutual_ave);
if (error)
goto resume_scanning;
/* 3. Read global and local self IDAC data. */
error = cyapa_gen5_read_self_idac_data(cyapa,
&gidac_self_rx, &gidac_self_tx,
&lidac_self_max, &lidac_self_min,
&lidac_self_ave);
if (error)
goto resume_scanning;
/* 4. Execuate panel scan. It must be executed before read data. */
error = cyapa_gen5_execute_panel_scan(cyapa);
if (error)
goto resume_scanning;
/* 5. Retrieve panel scan, mutual cap raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_MUTUAL_RAW_DATA,
cyapa->electrodes_x * cyapa->electrodes_y,
&raw_cap_mutual_max, &raw_cap_mutual_min,
&raw_cap_mutual_ave,
NULL);
if (error)
goto resume_scanning;
/* 6. Retrieve panel scan, self cap raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_SELF_RAW_DATA,
cyapa->electrodes_x + cyapa->electrodes_y,
&raw_cap_self_max, &raw_cap_self_min,
&raw_cap_self_ave,
NULL);
if (error)
goto resume_scanning;
/* 7. Retrieve panel scan, mutual cap diffcount raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT,
cyapa->electrodes_x * cyapa->electrodes_y,
&mutual_diffdata_max, &mutual_diffdata_min,
&mutual_diffdata_ave,
NULL);
if (error)
goto resume_scanning;
/* 8. Retrieve panel scan, self cap diffcount raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_SELF_DIFFCOUNT,
cyapa->electrodes_x + cyapa->electrodes_y,
&self_diffdata_max, &self_diffdata_min,
&self_diffdata_ave,
NULL);
if (error)
goto resume_scanning;
/* 9. Retrieve panel scan, mutual cap baseline raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_MUTUAL_BASELINE,
cyapa->electrodes_x * cyapa->electrodes_y,
&mutual_baseline_max, &mutual_baseline_min,
&mutual_baseline_ave,
NULL);
if (error)
goto resume_scanning;
/* 10. Retrieve panel scan, self cap baseline raw data. */
error = cyapa_gen5_read_panel_scan_raw_data(cyapa,
GEN5_CMD_RETRIEVE_PANEL_SCAN,
GEN5_PANEL_SCAN_SELF_BASELINE,
cyapa->electrodes_x + cyapa->electrodes_y,
&self_baseline_max, &self_baseline_min,
&self_baseline_ave,
NULL);
if (error)
goto resume_scanning;
resume_scanning:
/* 11. Resume Scanning*/
resume_error = cyapa_gen5_resume_scanning(cyapa);
if (resume_error || error)
return resume_error ? resume_error : error;
/* 12. Output data strings */
size = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d %d %d %d %d %d ",
gidac_mutual_min, gidac_mutual_max, gidac_mutual_ave,
lidac_mutual_min, lidac_mutual_max, lidac_mutual_ave,
gidac_self_rx, gidac_self_tx,
lidac_self_min, lidac_self_max, lidac_self_ave);
size += scnprintf(buf + size, PAGE_SIZE - size,
"%d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d\n",
raw_cap_mutual_min, raw_cap_mutual_max, raw_cap_mutual_ave,
raw_cap_self_min, raw_cap_self_max, raw_cap_self_ave,
mutual_diffdata_min, mutual_diffdata_max, mutual_diffdata_ave,
self_diffdata_min, self_diffdata_max, self_diffdata_ave,
mutual_baseline_min, mutual_baseline_max, mutual_baseline_ave,
self_baseline_min, self_baseline_max, self_baseline_ave);
return size;
}
static bool cyapa_gen5_sort_system_info_data(struct cyapa *cyapa,
u8 *buf, int len)
{
/* Check the report id and command code */
if (VALID_CMD_RESP_HEADER(buf, 0x02))
return true;
return false;
}
static int cyapa_gen5_bl_query_data(struct cyapa *cyapa)
{
u8 bl_query_data_cmd[] = { 0x04, 0x00, 0x0b, 0x00, 0x40, 0x00,
0x01, 0x3c, 0x00, 0x00, 0xb0, 0x42, 0x17
};
u8 resp_data[GEN5_BL_READ_APP_INFO_RESP_LEN];
int resp_len;
int error;
resp_len = GEN5_BL_READ_APP_INFO_RESP_LEN;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
bl_query_data_cmd, sizeof(bl_query_data_cmd),
resp_data, &resp_len,
500, cyapa_gen5_sort_tsg_pip_bl_resp_data, false);
if (error || resp_len != GEN5_BL_READ_APP_INFO_RESP_LEN ||
!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
return error ? error : -EIO;
memcpy(&cyapa->product_id[0], &resp_data[8], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &resp_data[13], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &resp_data[19], 2);
cyapa->product_id[15] = '\0';
cyapa->fw_maj_ver = resp_data[22];
cyapa->fw_min_ver = resp_data[23];
return 0;
}
static int cyapa_gen5_get_query_data(struct cyapa *cyapa)
{
u8 get_system_information[] = {
0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x02
};
u8 resp_data[71];
int resp_len;
u16 product_family;
int error;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
get_system_information, sizeof(get_system_information),
resp_data, &resp_len,
2000, cyapa_gen5_sort_system_info_data, false);
if (error || resp_len < sizeof(resp_data))
return error ? error : -EIO;
product_family = get_unaligned_le16(&resp_data[7]);
if ((product_family & GEN5_PRODUCT_FAMILY_MASK) !=
GEN5_PRODUCT_FAMILY_TRACKPAD)
return -EINVAL;
cyapa->fw_maj_ver = resp_data[15];
cyapa->fw_min_ver = resp_data[16];
cyapa->electrodes_x = resp_data[52];
cyapa->electrodes_y = resp_data[53];
cyapa->physical_size_x = get_unaligned_le16(&resp_data[54]) / 100;
cyapa->physical_size_y = get_unaligned_le16(&resp_data[56]) / 100;
cyapa->max_abs_x = get_unaligned_le16(&resp_data[58]);
cyapa->max_abs_y = get_unaligned_le16(&resp_data[60]);
cyapa->max_z = get_unaligned_le16(&resp_data[62]);
cyapa->x_origin = resp_data[64] & 0x01;
cyapa->y_origin = resp_data[65] & 0x01;
cyapa->btn_capability = (resp_data[70] << 3) & CAPABILITY_BTN_MASK;
memcpy(&cyapa->product_id[0], &resp_data[33], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &resp_data[38], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &resp_data[44], 2);
cyapa->product_id[15] = '\0';
if (!cyapa->electrodes_x || !cyapa->electrodes_y ||
!cyapa->physical_size_x || !cyapa->physical_size_y ||
!cyapa->max_abs_x || !cyapa->max_abs_y || !cyapa->max_z)
return -EINVAL;
return 0;
}
static int cyapa_gen5_do_operational_check(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
int error;
if (cyapa->gen != CYAPA_GEN5)
return -ENODEV;
switch (cyapa->state) {
case CYAPA_STATE_GEN5_BL:
error = cyapa_gen5_bl_exit(cyapa);
if (error) {
/* Rry to update trackpad product information. */
cyapa_gen5_bl_query_data(cyapa);
goto out;
}
cyapa->state = CYAPA_STATE_GEN5_APP;
case CYAPA_STATE_GEN5_APP:
/*
* If trackpad device in deep sleep mode,
* the app command will fail.
* So always try to reset trackpad device to full active when
* the device state is requeried.
*/
error = cyapa_gen5_set_power_mode(cyapa,
PWR_MODE_FULL_ACTIVE, 0);
if (error)
dev_warn(dev, "%s: failed to set power active mode.\n",
__func__);
/* Get trackpad product information. */
error = cyapa_gen5_get_query_data(cyapa);
if (error)
goto out;
/* Only support product ID starting with CYTRA */
if (memcmp(cyapa->product_id, product_id,
strlen(product_id)) != 0) {
dev_err(dev, "%s: unknown product ID (%s)\n",
__func__, cyapa->product_id);
error = -EINVAL;
}
break;
default:
error = -EINVAL;
}
out:
return error;
}
/*
* Return false, do not continue process
* Return true, continue process.
*/
static bool cyapa_gen5_irq_cmd_handler(struct cyapa *cyapa)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
int length;
if (atomic_read(&gen5_pip->cmd_issued)) {
/* Polling command response data. */
if (gen5_pip->is_irq_mode == false)
return false;
/*
* Read out all none command response data.
* these output data may caused by user put finger on
* trackpad when host waiting the command response.
*/
cyapa_i2c_pip_read(cyapa, gen5_pip->irq_cmd_buf,
GEN5_RESP_LENGTH_SIZE);
length = get_unaligned_le16(gen5_pip->irq_cmd_buf);
length = (length <= GEN5_RESP_LENGTH_SIZE) ?
GEN5_RESP_LENGTH_SIZE : length;
if (length > GEN5_RESP_LENGTH_SIZE)
cyapa_i2c_pip_read(cyapa,
gen5_pip->irq_cmd_buf, length);
if (!(gen5_pip->resp_sort_func &&
gen5_pip->resp_sort_func(cyapa,
gen5_pip->irq_cmd_buf, length))) {
/*
* Work around the Gen5 V1 firmware
* that does not assert interrupt signalling
* that command response is ready if user
* keeps touching the trackpad while command
* is sent to the device.
*/
length = 0;
if (gen5_pip->resp_len)
length = *gen5_pip->resp_len;
cyapa_empty_pip_output_data(cyapa,
gen5_pip->resp_data,
&length,
gen5_pip->resp_sort_func);
if (gen5_pip->resp_len && length != 0) {
*gen5_pip->resp_len = length;
atomic_dec(&gen5_pip->cmd_issued);
complete(&gen5_pip->cmd_ready);
}
return false;
}
if (gen5_pip->resp_data && gen5_pip->resp_len) {
*gen5_pip->resp_len = (*gen5_pip->resp_len < length) ?
*gen5_pip->resp_len : length;
memcpy(gen5_pip->resp_data, gen5_pip->irq_cmd_buf,
*gen5_pip->resp_len);
}
atomic_dec(&gen5_pip->cmd_issued);
complete(&gen5_pip->cmd_ready);
return false;
}
return true;
}
static void cyapa_gen5_report_buttons(struct cyapa *cyapa,
const struct cyapa_gen5_report_data *report_data)
{
struct input_dev *input = cyapa->input;
u8 buttons = report_data->report_head[GEN5_BUTTONS_OFFSET];
buttons = (buttons << CAPABILITY_BTN_SHIFT) & CAPABILITY_BTN_MASK;
if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) {
input_report_key(input, BTN_LEFT,
!!(buttons & CAPABILITY_LEFT_BTN_MASK));
}
if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) {
input_report_key(input, BTN_MIDDLE,
!!(buttons & CAPABILITY_MIDDLE_BTN_MASK));
}
if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) {
input_report_key(input, BTN_RIGHT,
!!(buttons & CAPABILITY_RIGHT_BTN_MASK));
}
input_sync(input);
}
static void cyapa_gen5_report_slot_data(struct cyapa *cyapa,
const struct cyapa_gen5_touch_record *touch)
{
struct input_dev *input = cyapa->input;
u8 event_id = GEN5_GET_EVENT_ID(touch->touch_tip_event_id);
int slot = GEN5_GET_TOUCH_ID(touch->touch_tip_event_id);
int x, y;
if (event_id == RECORD_EVENT_LIFTOFF)
return;
input_mt_slot(input, slot);
input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
x = (touch->x_hi << 8) | touch->x_lo;
if (cyapa->x_origin)
x = cyapa->max_abs_x - x;
input_report_abs(input, ABS_MT_POSITION_X, x);
y = (touch->y_hi << 8) | touch->y_lo;
if (cyapa->y_origin)
y = cyapa->max_abs_y - y;
input_report_abs(input, ABS_MT_POSITION_Y, y);
input_report_abs(input, ABS_MT_PRESSURE,
touch->z);
input_report_abs(input, ABS_MT_TOUCH_MAJOR,
touch->major_axis_len);
input_report_abs(input, ABS_MT_TOUCH_MINOR,
touch->minor_axis_len);
input_report_abs(input, ABS_MT_WIDTH_MAJOR,
touch->major_tool_len);
input_report_abs(input, ABS_MT_WIDTH_MINOR,
touch->minor_tool_len);
input_report_abs(input, ABS_MT_ORIENTATION,
touch->orientation);
}
static void cyapa_gen5_report_touches(struct cyapa *cyapa,
const struct cyapa_gen5_report_data *report_data)
{
struct input_dev *input = cyapa->input;
unsigned int touch_num;
int i;
touch_num = report_data->report_head[GEN5_NUMBER_OF_TOUCH_OFFSET] &
GEN5_NUMBER_OF_TOUCH_MASK;
for (i = 0; i < touch_num; i++)
cyapa_gen5_report_slot_data(cyapa,
&report_data->touch_records[i]);
input_mt_sync_frame(input);
input_sync(input);
}
static int cyapa_gen5_irq_handler(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_gen5_report_data report_data;
int ret;
u8 report_id;
unsigned int report_len;
if (cyapa->gen != CYAPA_GEN5 ||
cyapa->state != CYAPA_STATE_GEN5_APP) {
dev_err(dev, "invalid device state, gen=%d, state=0x%02x\n",
cyapa->gen, cyapa->state);
return -EINVAL;
}
ret = cyapa_i2c_pip_read(cyapa, (u8 *)&report_data,
GEN5_RESP_LENGTH_SIZE);
if (ret != GEN5_RESP_LENGTH_SIZE) {
dev_err(dev, "failed to read length bytes, (%d)\n", ret);
return -EINVAL;
}
report_len = get_unaligned_le16(
&report_data.report_head[GEN5_RESP_LENGTH_OFFSET]);
if (report_len < GEN5_RESP_LENGTH_SIZE) {
/* Invliad length or internal reset happened. */
dev_err(dev, "invalid report_len=%d. bytes: %02x %02x\n",
report_len, report_data.report_head[0],
report_data.report_head[1]);
return -EINVAL;
}
/* Idle, no data for report. */
if (report_len == GEN5_RESP_LENGTH_SIZE)
return 0;
ret = cyapa_i2c_pip_read(cyapa, (u8 *)&report_data, report_len);
if (ret != report_len) {
dev_err(dev, "failed to read %d bytes report data, (%d)\n",
report_len, ret);
return -EINVAL;
}
report_id = report_data.report_head[GEN5_RESP_REPORT_ID_OFFSET];
if (report_id == GEN5_WAKEUP_EVENT_REPORT_ID &&
report_len == GEN5_WAKEUP_EVENT_SIZE) {
/*
* Device wake event from deep sleep mode for touch.
* This interrupt event is used to wake system up.
*/
return 0;
} else if (report_id != GEN5_TOUCH_REPORT_ID &&
report_id != GEN5_BTN_REPORT_ID &&
report_id != GEN5_OLD_PUSH_BTN_REPORT_ID &&
report_id != GEN5_PUSH_BTN_REPORT_ID) {
/* Running in BL mode or unknown response data read. */
dev_err(dev, "invalid report_id=0x%02x\n", report_id);
return -EINVAL;
}
if (report_id == GEN5_TOUCH_REPORT_ID &&
(report_len < GEN5_TOUCH_REPORT_HEAD_SIZE ||
report_len > GEN5_TOUCH_REPORT_MAX_SIZE)) {
/* Invalid report data length for finger packet. */
dev_err(dev, "invalid touch packet length=%d\n", report_len);
return 0;
}
if ((report_id == GEN5_BTN_REPORT_ID ||
report_id == GEN5_OLD_PUSH_BTN_REPORT_ID ||
report_id == GEN5_PUSH_BTN_REPORT_ID) &&
(report_len < GEN5_BTN_REPORT_HEAD_SIZE ||
report_len > GEN5_BTN_REPORT_MAX_SIZE)) {
/* Invalid report data length of button packet. */
dev_err(dev, "invalid button packet length=%d\n", report_len);
return 0;
}
if (report_id == GEN5_TOUCH_REPORT_ID)
cyapa_gen5_report_touches(cyapa, &report_data);
else
cyapa_gen5_report_buttons(cyapa, &report_data);
return 0;
}
static int cyapa_gen5_bl_activate(struct cyapa *cyapa) { return 0; }
static int cyapa_gen5_bl_deactivate(struct cyapa *cyapa) { return 0; }
const struct cyapa_dev_ops cyapa_gen5_ops = {
.check_fw = cyapa_gen5_check_fw,
.bl_enter = cyapa_gen5_bl_enter,
.bl_initiate = cyapa_gen5_bl_initiate,
.update_fw = cyapa_gen5_do_fw_update,
.bl_activate = cyapa_gen5_bl_activate,
.bl_deactivate = cyapa_gen5_bl_deactivate,
.show_baseline = cyapa_gen5_show_baseline,
.calibrate_store = cyapa_gen5_do_calibrate,
.initialize = cyapa_gen5_initialize,
.state_parse = cyapa_gen5_state_parse,
.operational_check = cyapa_gen5_do_operational_check,
.irq_handler = cyapa_gen5_irq_handler,
.irq_cmd_handler = cyapa_gen5_irq_cmd_handler,
.sort_empty_output_data = cyapa_empty_pip_output_data,
.set_power_mode = cyapa_gen5_set_power_mode,
};