Release 4.11 drivers/input/mouse/cyapa_gen5.c
/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
*
* Copyright (C) 2014-2015 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 <linux/pm_runtime.h>
#include "cyapa.h"
/* Macro of TSG firmware image */
#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
/* Macro of PIP interface */
#define PIP_BL_INITIATE_RESP_LEN 11
#define PIP_BL_FAIL_EXIT_RESP_LEN 11
#define PIP_BL_FAIL_EXIT_STATUS_CODE 0x0c
#define PIP_BL_VERIFY_INTEGRITY_RESP_LEN 12
#define PIP_BL_INTEGRITY_CHEKC_PASS 0x00
#define PIP_BL_BLOCK_WRITE_RESP_LEN 11
#define PIP_TOUCH_REPORT_ID 0x01
#define PIP_BTN_REPORT_ID 0x03
#define PIP_WAKEUP_EVENT_REPORT_ID 0x04
#define PIP_PUSH_BTN_REPORT_ID 0x06
#define GEN5_OLD_PUSH_BTN_REPORT_ID 0x05
/* Special for old Gen5 TP. */
#define PIP_PROXIMITY_REPORT_ID 0x07
#define PIP_PROXIMITY_REPORT_SIZE 6
#define PIP_PROXIMITY_DISTANCE_OFFSET 0x05
#define PIP_PROXIMITY_DISTANCE_MASK 0x01
#define PIP_TOUCH_REPORT_HEAD_SIZE 7
#define PIP_TOUCH_REPORT_MAX_SIZE 127
#define PIP_BTN_REPORT_HEAD_SIZE 6
#define PIP_BTN_REPORT_MAX_SIZE 14
#define PIP_WAKEUP_EVENT_SIZE 4
#define PIP_NUMBER_OF_TOUCH_OFFSET 5
#define PIP_NUMBER_OF_TOUCH_MASK 0x1f
#define PIP_BUTTONS_OFFSET 5
#define PIP_BUTTONS_MASK 0x0f
#define PIP_GET_EVENT_ID(reg) (((reg) >> 5) & 0x03)
#define PIP_GET_TOUCH_ID(reg) ((reg) & 0x1f)
#define PIP_TOUCH_TYPE_FINGER 0x00
#define PIP_TOUCH_TYPE_PROXIMITY 0x01
#define PIP_TOUCH_TYPE_HOVER 0x02
#define PIP_GET_TOUCH_TYPE(reg) ((reg) & 0x07)
#define RECORD_EVENT_NONE 0
#define RECORD_EVENT_TOUCHDOWN 1
#define RECORD_EVENT_DISPLACE 2
#define RECORD_EVENT_LIFTOFF 3
#define PIP_SENSING_MODE_MUTUAL_CAP_FINE 0x00
#define PIP_SENSING_MODE_SELF_CAP 0x02
#define PIP_SET_PROXIMITY 0x49
/* Macro of Gen5 */
#define GEN5_BL_MAX_OUTPUT_LENGTH 0x0100
#define GEN5_APP_MAX_OUTPUT_LENGTH 0x00fe
#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_POWER_READY_MAX_INTRVL_TIME 50
/* Unit: ms */
#define GEN5_POWER_IDLE_MAX_INTRVL_TIME 250
/* Unit: ms */
#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_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_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 retrieve PWC and panel scan commands */
#define GEN5_RESP_DATA_STRUCTURE_OFFSET 10
#define GEN5_PWC_DATA_ELEMENT_SIZE_MASK 0x07
struct cyapa_pip_touch_record {
/*
* Bit 7 - 3: reserved
* Bit 2 - 0: touch type;
* 0 : standard finger;
* 1 : proximity (Start supported in Gen5 TP).
* 2 : finger hover (defined, but not used yet.)
* 3 - 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;
/*
* The meaning of this value is different when touch_type is different.
* For standard finger type:
* Touch intensity in counts, pressure value.
* For proximity type (Start supported in Gen5 TP):
* The distance, in surface units, between the contact and
* the surface.
**/
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_pip_report_data {
u8 report_head[PIP_TOUCH_REPORT_HEAD_SIZE];
struct cyapa_pip_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];
u8 silicon_id_hi;
u8 silicon_id_lo;
u8 chip_revision;
u8 family_id;
u8 bl_ver_maj;
u8 bl_ver_min;
}
__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 pip_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 pip_bl_packet_end {
__le16 crc;
u8 eop; /* End of packet, must be 17h */
}
__packed;
struct pip_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 pip_bl_packet_start packet_start;
u8 data[0]; /* Command data variable based on commands */
}
__packed;
/* Initiate bootload command data structure. */
struct pip_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 tsg_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 tsg_bl_flash_row_head {
u8 flash_array_id;
__le16 flash_row_id;
u8 flash_data[0];
}
__packed;
struct pip_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;
u8 pip_read_sys_info[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x02 };
u8 pip_bl_read_app_info[] = { 0x04, 0x00, 0x0b, 0x00, 0x40, 0x00,
0x01, 0x3c, 0x00, 0x00, 0xb0, 0x42, 0x17
};
static u8 cyapa_pip_bl_cmd_key[] = { 0xa5, 0x01, 0x02, 0x03,
0xff, 0xfe, 0xfd, 0x5a };
static int cyapa_pip_event_process(struct cyapa *cyapa,
struct cyapa_pip_report_data *report_data);
int cyapa_pip_cmd_state_initialize(struct cyapa *cyapa)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
init_completion(&pip->cmd_ready);
atomic_set(&pip->cmd_issued, 0);
mutex_init(&pip->cmd_lock);
mutex_init(&pip->pm_stage_lock);
pip->pm_stage = CYAPA_PM_DEACTIVE;
pip->resp_sort_func = NULL;
pip->in_progress_cmd = PIP_INVALID_CMD;
pip->resp_data = NULL;
pip->resp_len = NULL;
cyapa->dev_pwr_mode = UNINIT_PWR_MODE;
cyapa->dev_sleep_time = UNINIT_SLEEP_TIME;
return 0;
}
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/* Return negative errno, or else the number of bytes read. */
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;
}
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/**
* Return a negative errno code else zero on success.
*/
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;
}
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static void cyapa_set_pip_pm_state(struct cyapa *cyapa,
enum cyapa_pm_stage pm_stage)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
mutex_lock(&pip->pm_stage_lock);
pip->pm_stage = pm_stage;
mutex_unlock(&pip->pm_stage_lock);
}
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static void cyapa_reset_pip_pm_state(struct cyapa *cyapa)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
/* Indicates the pip->pm_stage is not valid. */
mutex_lock(&pip->pm_stage_lock);
pip->pm_stage = CYAPA_PM_DEACTIVE;
mutex_unlock(&pip->pm_stage_lock);
}
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static enum cyapa_pm_stage cyapa_get_pip_pm_state(struct cyapa *cyapa)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
enum cyapa_pm_stage pm_stage;
mutex_lock(&pip->pm_stage_lock);
pm_stage = pip->pm_stage;
mutex_unlock(&pip->pm_stage_lock);
return pm_stage;
}
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/**
* This function is aimed to dump all not read data in Gen5 trackpad
* before send any command, otherwise, the interrupt line will be blocked.
*/
int cyapa_empty_pip_output_data(struct cyapa *cyapa,
u8 *buf, int *len, cb_sort func)
{
struct input_dev *input = cyapa->input;
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
enum cyapa_pm_stage pm_stage = cyapa_get_pip_pm_state(cyapa);
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, pip->empty_buf,
PIP_RESP_LENGTH_SIZE);
if (error < 0)
return error;
length = get_unaligned_le16(pip->empty_buf);
if (length == PIP_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 = PIP_RESP_LENGTH_SIZE;
if (buf && buf_len && func &&
func(cyapa, pip->empty_buf, length)) {
length = min(buf_len, length);
memcpy(buf, pip->empty_buf, length);
*len = length;
/* Response found, success. */
return 0;
}
continue;
}
error = cyapa_i2c_pip_read(cyapa, pip->empty_buf, length);
if (error < 0)
return error;
report_count--;
empty_count = 0;
length = get_unaligned_le16(pip->empty_buf);
if (length <= PIP_RESP_LENGTH_SIZE) {
empty_count++;
} else if (buf && buf_len && func &&
func(cyapa, pip->empty_buf, length)) {
length = min(buf_len, length);
memcpy(buf, pip->empty_buf, length);
*len = length;
/* Response found, success. */
return 0;
} else if (cyapa->operational && input && input->users &&
(pm_stage == CYAPA_PM_RUNTIME_RESUME ||
pm_stage == CYAPA_PM_RUNTIME_SUSPEND)) {
/* Parse the data and report it if it's valid. */
cyapa_pip_event_process(cyapa,
(struct cyapa_pip_report_data *)pip->empty_buf);
}
error = -EINVAL;
} while (report_count);
return error;
}
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static int cyapa_do_i2c_pip_cmd_irq_sync(
struct cyapa *cyapa,
u8 *cmd, size_t cmd_len,
unsigned long timeout)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
int error;
/* Wait for interrupt to set ready completion */
init_completion(&pip->cmd_ready);
atomic_inc(&pip->cmd_issued);
error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len);
if (error) {
atomic_dec(&pip->cmd_issued);
return (error < 0) ? error : -EIO;
}
/* Wait for interrupt to indicate command is completed. */
timeout = wait_for_completion_timeout(&pip->cmd_ready,
msecs_to_jiffies(timeout));
if (timeout == 0) {
atomic_dec(&pip->cmd_issued);
return -ETIMEDOUT;
}
return 0;
}
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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_pip_cmd_states *pip = &cyapa->cmd_states.pip;
int tries;
int length;
int error;
atomic_inc(&pip->cmd_issued);
error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len);
if (error) {
atomic_dec(&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(&pip->cmd_issued);
return error;
}
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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_pip_cmd_states *pip = &cyapa->cmd_states.pip;
int error;
if (!cmd || !cmd_len)
return -EINVAL;
/* Commands must be serialized. */
error = mutex_lock_interruptible(&pip->cmd_lock);
if (error)
return error;
pip->resp_sort_func = func;
pip->resp_data = resp_data;
pip->resp_len = resp_len;
if (cmd_len >= PIP_MIN_APP_CMD_LENGTH &&
cmd[4] == PIP_APP_CMD_REPORT_ID) {
/* Application command */
pip->in_progress_cmd = cmd[6] & 0x7f;
} else if (cmd_len >= PIP_MIN_BL_CMD_LENGTH &&
cmd[4] == PIP_BL_CMD_REPORT_ID) {
/* Bootloader command */
pip->in_progress_cmd = cmd[7];
}
/* Send command data, wait and read output response data's length. */
if (irq_mode) {
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 {
pip->is_irq_mode = false;
error = cyapa_do_i2c_pip_cmd_polling(cyapa, cmd, cmd_len,
resp_data, resp_len, timeout, func);
}
pip->resp_sort_func = NULL;
pip->resp_data = NULL;
pip->resp_len = NULL;
pip->in_progress_cmd = PIP_INVALID_CMD;
mutex_unlock(&pip->cmd_lock);
return error;
}
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bool cyapa_sort_tsg_pip_bl_resp_data(struct cyapa *cyapa,
u8 *data, int len)
{
if (!data || len < PIP_MIN_BL_RESP_LENGTH)
return false;
/* Bootloader input report id 30h */
if (data[PIP_RESP_REPORT_ID_OFFSET] == PIP_BL_RESP_REPORT_ID &&
data[PIP_RESP_RSVD_OFFSET] == PIP_RESP_RSVD_KEY &&
data[PIP_RESP_BL_SOP_OFFSET] == PIP_SOP_KEY)
return true;
return false;
}
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Total | 59 | 100.00% | 2 | 100.00% |
bool cyapa_sort_tsg_pip_app_resp_data(struct cyapa *cyapa,
u8 *data, int len)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
int resp_len;
if (!data || len < PIP_MIN_APP_RESP_LENGTH)
return false;
if (data[PIP_RESP_REPORT_ID_OFFSET] == PIP_APP_RESP_REPORT_ID &&
data[PIP_RESP_RSVD_OFFSET] == PIP_RESP_RSVD_KEY) {
resp_len = get_unaligned_le16(&data[PIP_RESP_LENGTH_OFFSET]);
if (GET_PIP_CMD_CODE(data[PIP_RESP_APP_CMD_OFFSET]) == 0x00 &&
resp_len == PIP_UNSUPPORTED_CMD_RESP_LENGTH &&
data[5] == pip->in_progress_cmd) {
/* Unsupported command code */
return false;
} else if (GET_PIP_CMD_CODE(data[PIP_RESP_APP_CMD_OFFSET]) ==
pip->in_progress_cmd) {
/* Correct command response received */
return true;
}
}
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dudley Du | 128 | 100.00% | 2 | 100.00% |
Total | 128 | 100.00% | 2 | 100.00% |
static bool cyapa_sort_pip_application_launch_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (buf == NULL || len < PIP_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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dudley Du | 54 | 100.00% | 3 | 100.00% |
Total | 54 | 100.00% | 3 | 100.00% |
static bool cyapa_sort_gen5_hid_descriptor_data(struct cyapa *cyapa,
u8 *buf, int len)
{
int resp_len;
int max_output_len;
/* Check hid descriptor. */
if (len != PIP_HID_DESCRIPTOR_SIZE)
return false;
resp_len = get_unaligned_le16(&buf[PIP_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&buf[16]);
if (resp_len == PIP_HID_DESCRIPTOR_SIZE) {
if (buf[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_BL_REPORT_ID &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Descriptor */
return true;
} else if ((buf[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_HID_APP_REPORT_ID) &&
max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) {
/* APP mode HID Descriptor */
return true;
}
}
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dudley Du | 108 | 100.00% | 3 | 100.00% |
Total | 108 | 100.00% | 3 | 100.00% |
static bool cyapa_sort_pip_deep_sleep_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (len == PIP_DEEP_SLEEP_RESP_LENGTH &&
buf[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_APP_DEEP_SLEEP_REPORT_ID &&
(buf[4] & PIP_DEEP_SLEEP_OPCODE_MASK) ==
PIP_DEEP_SLEEP_OPCODE)
return true;
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dudley Du | 48 | 100.00% | 2 | 100.00% |
Total | 48 | 100.00% | 2 | 100.00% |
static int gen5_idle_state_parse(struct cyapa *cyapa)
{
u8 resp_data[PIP_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[PIP_RESP_LENGTH_OFFSET]);
if (length == PIP_RESP_LENGTH_SIZE) {
/* Normal state of Gen5 with no data to response */
cyapa->gen