/*
* 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 <linux/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 0 x80
#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 0 x002e
#define CYAPA_TSG_IMG_END_ROW_NUM 0 x01fe
#define CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM 0 x01ff
#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 0 x1700
#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 0 x0c
#define PIP_BL_VERIFY_INTEGRITY_RESP_LEN 12
#define PIP_BL_INTEGRITY_CHEKC_PASS 0 x00
#define PIP_BL_BLOCK_WRITE_RESP_LEN 11
#define PIP_TOUCH_REPORT_ID 0 x01
#define PIP_BTN_REPORT_ID 0 x03
#define PIP_WAKEUP_EVENT_REPORT_ID 0 x04
#define PIP_PUSH_BTN_REPORT_ID 0 x06
#define GEN5_OLD_PUSH_BTN_REPORT_ID 0 x05 /* Special for old Gen5 TP. */
#define PIP_PROXIMITY_REPORT_ID 0 x07
#define PIP_PROXIMITY_REPORT_SIZE 6
#define PIP_PROXIMITY_DISTANCE_OFFSET 0 x05
#define PIP_PROXIMITY_DISTANCE_MASK 0 x01
#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 0 x1f
#define PIP_BUTTONS_OFFSET 5
#define PIP_BUTTONS_MASK 0 x0f
#define PIP_GET_EVENT_ID(reg) (((reg) >> 5 ) & 0 x03)
#define PIP_GET_TOUCH_ID(reg) ((reg) & 0 x1f)
#define PIP_TOUCH_TYPE_FINGER 0 x00
#define PIP_TOUCH_TYPE_PROXIMITY 0 x01
#define PIP_TOUCH_TYPE_HOVER 0 x02
#define PIP_GET_TOUCH_TYPE(reg) ((reg) & 0 x07)
#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 0 x00
#define PIP_SENSING_MODE_SELF_CAP 0 x02
#define PIP_SET_PROXIMITY 0 x49
/* Macro of Gen5 */
#define GEN5_BL_MAX_OUTPUT_LENGTH 0 x0100
#define GEN5_APP_MAX_OUTPUT_LENGTH 0 x00fe
#define GEN5_POWER_STATE_ACTIVE 0 x01
#define GEN5_POWER_STATE_LOOK_FOR_TOUCH 0 x02
#define GEN5_POWER_STATE_READY 0 x03
#define GEN5_POWER_STATE_IDLE 0 x04
#define GEN5_POWER_STATE_BTN_ONLY 0 x05
#define GEN5_POWER_STATE_OFF 0 x06
#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 0 x05
#define GEN5_CMD_SET_PARAMETER 0 x06
#define GEN5_PARAMETER_ACT_INTERVL_ID 0 x4d
#define GEN5_PARAMETER_ACT_INTERVL_SIZE 1
#define GEN5_PARAMETER_ACT_LFT_INTERVL_ID 0 x4f
#define GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE 2
#define GEN5_PARAMETER_LP_INTRVL_ID 0 x4c
#define GEN5_PARAMETER_LP_INTRVL_SIZE 2
#define GEN5_PARAMETER_DISABLE_PIP_REPORT 0 x08
#define GEN5_BL_REPORT_DESCRIPTOR_SIZE 0 x1d
#define GEN5_BL_REPORT_DESCRIPTOR_ID 0 xfe
#define GEN5_APP_REPORT_DESCRIPTOR_SIZE 0 xee
#define GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE 0 xfa
#define GEN5_APP_REPORT_DESCRIPTOR_ID 0 xf6
#define GEN5_RETRIEVE_MUTUAL_PWC_DATA 0 x00
#define GEN5_RETRIEVE_SELF_CAP_PWC_DATA 0 x01
#define GEN5_RETRIEVE_DATA_ELEMENT_SIZE_MASK 0 x07
#define GEN5_CMD_EXECUTE_PANEL_SCAN 0 x2a
#define GEN5_CMD_RETRIEVE_PANEL_SCAN 0 x2b
#define GEN5_PANEL_SCAN_MUTUAL_RAW_DATA 0 x00
#define GEN5_PANEL_SCAN_MUTUAL_BASELINE 0 x01
#define GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT 0 x02
#define GEN5_PANEL_SCAN_SELF_RAW_DATA 0 x03
#define GEN5_PANEL_SCAN_SELF_BASELINE 0 x04
#define GEN5_PANEL_SCAN_SELF_DIFFCOUNT 0 x05
/* 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 0 x07
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[];
} __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[]; /* 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[];
} __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[]; /* 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[] = { 0 x04, 0 x00, 0 x05, 0 x00, 0 x2f, 0 x00, 0 x02 };
u8 pip_bl_read_app_info[] = { 0 x04, 0 x00, 0 x0b, 0 x00, 0 x40, 0 x00,
0 x01, 0 x3c, 0 x00, 0 x00, 0 xb0, 0 x42, 0 x17
};
static u8 cyapa_pip_bl_cmd_key[] = { 0 xa5, 0 x01, 0 x02, 0 x03,
0 xff, 0 xfe, 0 xfd, 0 x5a };
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 ;
}
/* 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;
}
/*
* 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 ;
}
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);
}
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);
}
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;
}
/*
* 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_device_enabled(input) &&
(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;
}
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 ;
}
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;
}
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 ] & 0 x7f;
} 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;
}
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 ;
}
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]) == 0 x00 &&
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 ;
}
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 0 x00 0 x00
* to indicate a reset or power on event .
*/
if (buf[0 ] == 0 && buf[1 ] == 0 )
return true ;
return false ;
}
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 ;
}
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 ;
}
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 = CYAPA_GEN5;
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
/* Read description from trackpad device */
cmd[0 ] = 0 x01;
cmd[1 ] = 0 x00;
length = PIP_HID_DESCRIPTOR_SIZE;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, PIP_RESP_LENGTH_SIZE,
resp_data, &length,
300 ,
cyapa_sort_gen5_hid_descriptor_data,
false );
if (error)
return error;
length = get_unaligned_le16(
&resp_data[PIP_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&resp_data[16 ]);
if ((length == PIP_HID_DESCRIPTOR_SIZE ||
length == PIP_RESP_LENGTH_SIZE) &&
(resp_data[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_HID_BL_REPORT_ID) &&
max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) {
/* BL mode HID Description read */
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if ((length == PIP_HID_DESCRIPTOR_SIZE ||
length == PIP_RESP_LENGTH_SIZE) &&
(resp_data[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_HID_APP_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;
* 0 x20 0 x00 0 xFF 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,
PIP_HID_DESCRIPTOR_SIZE);
if (ret != PIP_HID_DESCRIPTOR_SIZE)
return ret < 0 ? ret : -EIO;
length = get_unaligned_le16(&resp_data[PIP_RESP_LENGTH_OFFSET]);
max_output_len = get_unaligned_le16(&resp_data[16 ]);
if (length == PIP_RESP_LENGTH_SIZE) {
if (reg_data[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_HID_BL_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 == PIP_HID_DESCRIPTOR_SIZE &&
resp_data[2 ] == PIP_HID_BL_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 == PIP_HID_DESCRIPTOR_SIZE &&
(resp_data[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_HID_APP_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[PIP_RESP_LENGTH_OFFSET]);
switch (reg_data[PIP_RESP_REPORT_ID_OFFSET]) {
case PIP_TOUCH_REPORT_ID:
if (length < PIP_TOUCH_REPORT_HEAD_SIZE ||
length > PIP_TOUCH_REPORT_MAX_SIZE)
return -EINVAL;
break ;
case PIP_BTN_REPORT_ID:
case GEN5_OLD_PUSH_BTN_REPORT_ID:
case PIP_PUSH_BTN_REPORT_ID:
if (length < PIP_BTN_REPORT_HEAD_SIZE ||
length > PIP_BTN_REPORT_MAX_SIZE)
return -EINVAL;
break ;
case PIP_WAKEUP_EVENT_REPORT_ID:
if (length != PIP_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_pip_cmd_states *pip = &cyapa->cmd_states.pip;
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[PIP_RESP_LENGTH_OFFSET]);
ret = cyapa_i2c_pip_read(cyapa, pip->empty_buf, length);
if (ret != length)
return ret < 0 ? ret : -EIO;
if (length == PIP_RESP_LENGTH_SIZE) {
/* Previous command has read the data through out. */
if (reg_data[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_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 ((pip->empty_buf[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_BL_RESP_REPORT_ID) &&
(pip->empty_buf[PIP_RESP_RSVD_OFFSET] ==
PIP_RESP_RSVD_KEY) &&
(pip->empty_buf[PIP_RESP_BL_SOP_OFFSET] ==
PIP_SOP_KEY) &&
(pip->empty_buf[length - 1 ] ==
PIP_EOP_KEY)) {
/* Gen5 BL command response data detected */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (pip->empty_buf[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_APP_RESP_REPORT_ID &&
pip->empty_buf[PIP_RESP_RSVD_OFFSET] ==
PIP_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[PIP_RESP_LENGTH_OFFSET]);
if (length == 0 || length == PIP_RESP_LENGTH_SIZE) {
gen5_idle_state_parse(cyapa);
} else if (length == PIP_HID_DESCRIPTOR_SIZE &&
(reg_data[2 ] == PIP_HID_BL_REPORT_ID ||
reg_data[2 ] == PIP_HID_APP_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 descriptor header. */
cyapa->gen = CYAPA_GEN5;
cyapa->state = CYAPA_STATE_GEN5_BL;
} else if (reg_data[2 ] == PIP_TOUCH_REPORT_ID ||
reg_data[2 ] == PIP_BTN_REPORT_ID ||
reg_data[2 ] == GEN5_OLD_PUSH_BTN_REPORT_ID ||
reg_data[2 ] == PIP_PUSH_BTN_REPORT_ID ||
reg_data[2 ] == PIP_WAKEUP_EVENT_REPORT_ID) {
gen5_report_data_header_parse(cyapa, reg_data);
} else if (reg_data[2 ] == PIP_BL_RESP_REPORT_ID ||
reg_data[2 ] == PIP_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 struct cyapa_tsg_bin_image_data_record *
cyapa_get_image_record_data_num(const struct firmware *fw,
int *record_num)
{
int head_size;
head_size = fw->data[0 ] + 1 ;
*record_num = (fw->size - head_size) /
sizeof (struct cyapa_tsg_bin_image_data_record);
return (struct cyapa_tsg_bin_image_data_record *)&fw->data[head_size];
}
int cyapa_pip_bl_initiate(struct cyapa *cyapa, const struct firmware *fw)
{
struct cyapa_tsg_bin_image_data_record *image_records;
struct pip_bl_cmd_head *bl_cmd_head;
struct pip_bl_packet_start *bl_packet_start;
struct pip_bl_initiate_cmd_data *cmd_data;
struct pip_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 pip_bl_cmd_head *)cmd;
cmd_data_len = CYAPA_TSG_BL_KEY_SIZE + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE;
cmd_len = sizeof (struct pip_bl_cmd_head) + cmd_data_len +
sizeof (struct pip_bl_packet_end);
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
put_unaligned_le16(cmd_len - 2 , &bl_cmd_head->length);
bl_cmd_head->report_id = PIP_BL_CMD_REPORT_ID;
bl_packet_start = &bl_cmd_head->packet_start;
bl_packet_start->sop = PIP_SOP_KEY;
bl_packet_start->cmd_code = PIP_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 pip_bl_initiate_cmd_data *)bl_cmd_head->data;
memcpy(cmd_data->key, cyapa_pip_bl_cmd_key, CYAPA_TSG_BL_KEY_SIZE);
image_records = cyapa_get_image_record_data_num(fw, &records_num);
/* 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(0 xffff, 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 pip_bl_packet_end *)(bl_cmd_head->data +
cmd_data_len);
cmd_crc = crc_itu_t(0 xffff, (u8 *)bl_packet_start,
sizeof (struct pip_bl_packet_start) + cmd_data_len);
put_unaligned_le16(cmd_crc, &bl_packet_end->crc);
bl_packet_end->eop = PIP_EOP_KEY;
resp_len = sizeof (resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, cmd_len,
resp_data, &resp_len, 12000 ,
cyapa_sort_tsg_pip_bl_resp_data, true );
if (error || resp_len != PIP_BL_INITIATE_RESP_LEN ||
resp_data[2 ] != PIP_BL_RESP_REPORT_ID ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data))
return error ? error : -EAGAIN;
return 0 ;
}
static bool cyapa_sort_pip_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len)
{
if (buf == NULL || len < PIP_RESP_LENGTH_SIZE)
return false ;
if (buf[0 ] == 0 && buf[1 ] == 0 )
return true ;
/* Exit bootloader failed for some reason. */
if (len == PIP_BL_FAIL_EXIT_RESP_LEN &&
buf[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_BL_RESP_REPORT_ID &&
buf[PIP_RESP_RSVD_OFFSET] == PIP_RESP_RSVD_KEY &&
buf[PIP_RESP_BL_SOP_OFFSET] == PIP_SOP_KEY &&
buf[10 ] == PIP_EOP_KEY)
return true ;
return false ;
}
int cyapa_pip_bl_exit(struct cyapa *cyapa)
{
u8 bl_gen5_bl_exit[] = { 0 x04, 0 x00,
0 x0B, 0 x00, 0 x40, 0 x00, 0 x01, 0 x3b, 0 x00, 0 x00,
0 x20, 0 xc7, 0 x17
};
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_sort_pip_bl_exit_data, false );
if (error)
return error;
if (resp_len == PIP_BL_FAIL_EXIT_RESP_LEN ||
resp_data[PIP_RESP_REPORT_ID_OFFSET] ==
PIP_BL_RESP_REPORT_ID)
return -EAGAIN;
if (resp_data[0 ] == 0 x00 && resp_data[1 ] == 0 x00)
return 0 ;
return -ENODEV;
}
int cyapa_pip_bl_enter(struct cyapa *cyapa)
{
u8 cmd[] = { 0 x04, 0 x00, 0 x05, 0 x00, 0 x2F, 0 x00, 0 x01 };
u8 resp_data[2 ];
int resp_len;
int error;
error = cyapa_poll_state(cyapa, 500 );
if (error < 0 )
return error;
/* Already in bootloader mode, Skipping exit. */
if (cyapa_is_pip_bl_mode(cyapa))
return 0 ;
else if (!cyapa_is_pip_app_mode(cyapa))
return -EINVAL;
/* 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 0 x00 0 x00 .
*/
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_sort_pip_application_launch_data,
true );
if (error || resp_data[0 ] != 0 x00 || resp_data[1 ] != 0 x00)
return error < 0 ? error : -EAGAIN;
cyapa->operational = false ;
if (cyapa->gen == CYAPA_GEN5)
cyapa->state = CYAPA_STATE_GEN5_BL;
else if (cyapa->gen == CYAPA_GEN6)
cyapa->state = CYAPA_STATE_GEN6_BL;
return 0 ;
}
static int cyapa_pip_fw_head_check(struct cyapa *cyapa,
struct cyapa_tsg_bin_image_head *image_head)
{
if (image_head->head_size != 0 x0C && image_head->head_size != 0 x12)
return -EINVAL;
switch (cyapa->gen) {
case CYAPA_GEN6:
if (image_head->family_id != 0 x9B ||
image_head->silicon_id_hi != 0 x0B)
return -EINVAL;
break ;
case CYAPA_GEN5:
/* Gen5 without proximity support. */
if (cyapa->platform_ver < 2 ) {
if (image_head->head_size == 0 x0C)
break ;
return -EINVAL;
}
if (image_head->family_id != 0 x91 ||
image_head->silicon_id_hi != 0 x02)
return -EINVAL;
break ;
default :
return -EINVAL;
}
return 0 ;
}
int cyapa_pip_check_fw(struct cyapa *cyapa, const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_tsg_bin_image_data_record *image_records;
const struct cyapa_tsg_bin_image_data_record *app_integrity;
const struct tsg_bl_metadata_row_params *metadata;
int 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 i;
/* Verify the firmware image not miss-used for Gen5 and Gen6. */
if (cyapa_pip_fw_head_check(cyapa,
(struct cyapa_tsg_bin_image_head *)fw->data)) {
dev_err(dev, "%s: firmware image not match TP device.\n" ,
__func__);
return -EINVAL;
}
image_records =
cyapa_get_image_record_data_num(fw, &flash_records_count);
/*
* APP_INTEGRITY row is always the last row block ,
* and the row id must be 0 x01ff .
*/
app_integrity = &image_records[flash_records_count - 1 ];
if (app_integrity->flash_array_id != 0 x00 ||
get_unaligned_be16(&app_integrity->row_number) != 0 x01ff) {
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(0 xffff, 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. */
app_crc = 0 xffffU;
for (i = 0 ; i < fw_app_len / CYAPA_TSG_FW_ROW_SIZE; i++) {
const u8 *data = image_records[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_pip_write_fw_block(struct cyapa *cyapa,
struct cyapa_tsg_bin_image_data_record *flash_record)
{
struct pip_bl_cmd_head *bl_cmd_head;
struct pip_bl_packet_start *bl_packet_start;
struct tsg_bl_flash_row_head *flash_row_head;
struct pip_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 pip_bl_cmd_head *)cmd;
bl_packet_start = &bl_cmd_head->packet_start;
cmd_len = sizeof (struct pip_bl_cmd_head) +
sizeof (struct tsg_bl_flash_row_head) +
CYAPA_TSG_FLASH_MAP_BLOCK_SIZE +
sizeof (struct pip_bl_packet_end);
put_unaligned_le16(PIP_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 = PIP_BL_CMD_REPORT_ID;
bl_packet_start->sop = PIP_SOP_KEY;
bl_packet_start->cmd_code = PIP_BL_CMD_PROGRAM_VERIFY_ROW;
/* 1 (Flash Array ID) + 2 (Flash Row ID) + 128 (flash data) */
data_len = sizeof (struct tsg_bl_flash_row_head) + record_len;
put_unaligned_le16(data_len, &bl_packet_start->data_length);
flash_row_head = (struct tsg_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 pip_bl_packet_end *)(bl_cmd_head->data +
data_len);
crc = crc_itu_t(0 xffff, (u8 *)bl_packet_start,
sizeof (struct pip_bl_packet_start) + data_len);
put_unaligned_le16(crc, &bl_packet_end->crc);
bl_packet_end->eop = PIP_EOP_KEY;
resp_len = sizeof (resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
resp_data, &resp_len,
500 , cyapa_sort_tsg_pip_bl_resp_data, true );
if (error || resp_len != PIP_BL_BLOCK_WRITE_RESP_LEN ||
resp_data[2 ] != PIP_BL_RESP_REPORT_ID ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data))
return error < 0 ? error : -EAGAIN;
return 0 ;
}
int cyapa_pip_do_fw_update(struct cyapa *cyapa,
const struct firmware *fw)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_tsg_bin_image_data_record *image_records;
int flash_records_count;
int i;
int error;
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
image_records =
cyapa_get_image_record_data_num(fw, &flash_records_count);
/*
* The last flash row 0 x01ff has been written through bl_initiate
* command , so DO NOT write flash 0 x01ff to trackpad device .
*/
for (i = 0 ; i < (flash_records_count - 1 ); i++) {
error = cyapa_pip_write_fw_block(cyapa, &image_records[i]);
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 ] = { 0 x04, 0 x00, 0 x06, 0 x00, 0 x2f, 0 x00, 0 x08, 0 x01 };
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_sort_tsg_pip_app_resp_data, false );
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0 x08) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data))
return error < 0 ? error : -EINVAL;
return 0 ;
}
static int cyapa_gen5_set_interval_time(struct cyapa *cyapa,
u8 parameter_id, u16 interval_time)
{
struct pip_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 pip_app_cmd_head *)cmd;
parameter_data = (struct gen5_app_set_parameter_data *)
app_cmd_head->parameter_data;
cmd_len = sizeof (struct pip_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(PIP_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 = PIP_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_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 pip_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 pip_app_cmd_head *)cmd;
parameter_data = (struct gen5_app_get_parameter_data *)
app_cmd_head->parameter_data;
cmd_len = sizeof (struct pip_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(PIP_OUTPUT_REPORT_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 = PIP_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_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 |= (0 xff << (i * 8 ));
*interval_time = get_unaligned_le16(&resp_data[7 ]) & mask;
return 0 ;
}
static int cyapa_gen5_disable_pip_report(struct cyapa *cyapa)
{
struct pip_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 pip_app_cmd_head *)cmd;
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof (cmd) - 2 , &app_cmd_head->length);
app_cmd_head->report_id = PIP_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 ] = 0 x01;
app_cmd_head->parameter_data[2 ] = 0 x01;
resp_len = sizeof (resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof (cmd),
resp_data, &resp_len,
500 , cyapa_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 ] != 0 x01)
return error < 0 ? error : -EINVAL;
return 0 ;
}
int cyapa_pip_set_proximity(struct cyapa *cyapa, bool enable)
{
u8 cmd[] = { 0 x04, 0 x00, 0 x06, 0 x00, 0 x2f, 0 x00, PIP_SET_PROXIMITY,
(u8)!!enable
};
u8 resp_data[6 ];
int resp_len;
int error;
resp_len = sizeof (resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof (cmd),
resp_data, &resp_len,
500 , cyapa_sort_tsg_pip_app_resp_data, false );
if (error || !VALID_CMD_RESP_HEADER(resp_data, PIP_SET_PROXIMITY) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data)) {
error = (error == -ETIMEDOUT) ? -EOPNOTSUPP : error;
return error < 0 ? error : -EINVAL;
}
return 0 ;
}
int cyapa_pip_deep_sleep(struct cyapa *cyapa, u8 state)
{
u8 cmd[] = { 0 x05, 0 x00, 0 x00, 0 x08};
u8 resp_data[5 ];
int resp_len;
int error;
cmd[2 ] = state & PIP_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_sort_pip_deep_sleep_data, false );
if (error || ((resp_data[3 ] & PIP_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, enum cyapa_pm_stage pm_stage)
{
struct device *dev = &cyapa->client->dev;
u8 power_state;
int error = 0 ;
if (cyapa->state != CYAPA_STATE_GEN5_APP)
return 0 ;
cyapa_set_pip_pm_state(cyapa, pm_stage);
if (PIP_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 .
*/
PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
}
if (PIP_DEV_UNINIT_SLEEP_TIME(cyapa) &&
PIP_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 )
PIP_DEV_SET_SLEEP_TIME(cyapa, UNINIT_SLEEP_TIME);
if (PIP_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 ||
PIP_DEV_GET_SLEEP_TIME(cyapa) == sleep_time) {
/* Has in correct power mode state, early return. */
goto out;
}
}
if (power_mode == PWR_MODE_OFF) {
error = cyapa_pip_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_OFF);
if (error) {
dev_err(dev, "enter deep sleep fail: %d\n" , error);
goto out;
}
PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
goto out;
}
/*
* 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 (PIP_DEV_GET_PWR_STATE(cyapa) == PWR_MODE_OFF) {
error = cyapa_pip_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_ON);
if (error) {
dev_err(dev, "deep sleep wake fail: %d\n" , error);
goto out;
}
}
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);
goto out;
}
PIP_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);
goto out;
}
PIP_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 (PIP_DEV_UNINIT_SLEEP_TIME(cyapa) ||
sleep_time != PIP_DEV_GET_SLEEP_TIME(cyapa))
if (cyapa_gen5_set_interval_time(cyapa,
GEN5_PARAMETER_LP_INTRVL_ID,
sleep_time) == 0 )
PIP_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);
goto out;
}
/*
* 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 .
*/
if (pm_stage == CYAPA_PM_SUSPEND)
cyapa_gen5_disable_pip_report(cyapa);
PIP_DEV_SET_PWR_STATE(cyapa,
cyapa_sleep_time_to_pwr_cmd(sleep_time));
}
out:
cyapa_reset_pip_pm_state(cyapa);
return error;
}
int cyapa_pip_resume_scanning(struct cyapa *cyapa)
{
u8 cmd[] = { 0 x04, 0 x00, 0 x05, 0 x00, 0 x2f, 0 x00, 0 x04 };
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_sort_tsg_pip_app_resp_data, true );
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0 x04))
return -EINVAL;
/* Try to dump all buffered data when resuming scanning. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
return 0 ;
}
int cyapa_pip_suspend_scanning(struct cyapa *cyapa)
{
u8 cmd[] = { 0 x04, 0 x00, 0 x05, 0 x00, 0 x2f, 0 x00, 0 x03 };
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_sort_tsg_pip_app_resp_data, true );
if (error || !VALID_CMD_RESP_HEADER(resp_data, 0 x03))
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_pip_calibrate_pwcs(struct cyapa *cyapa,
u8 calibrate_sensing_mode_type)
{
struct pip_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 pip_app_cmd_head *)cmd;
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof (cmd) - 2 , &app_cmd_head->length);
app_cmd_head->report_id = PIP_APP_CMD_REPORT_ID;
app_cmd_head->cmd_code = PIP_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_sort_tsg_pip_app_resp_data, true );
if (error || !VALID_CMD_RESP_HEADER(resp_data, PIP_CMD_CALIBRATE) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data))
return error < 0 ? error : -EAGAIN;
return 0 ;
}
ssize_t cyapa_pip_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_pip_suspend_scanning(cyapa);
if (error)
return error;
/* 2. Do mutual capacitance fine calibrate. */
calibrate_error = cyapa_pip_calibrate_pwcs(cyapa,
PIP_SENSING_MODE_MUTUAL_CAP_FINE);
if (calibrate_error)
goto resume_scanning;
/* 3. Do self capacitance calibrate. */
calibrate_error = cyapa_pip_calibrate_pwcs(cyapa,
PIP_SENSING_MODE_SELF_CAP);
if (calibrate_error)
goto resume_scanning;
resume_scanning:
/* 4. Resume Scanning*/
error = cyapa_pip_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 & 0 x07);
big_endian = ((data_format & 0 x10) == 0 x00);
unsigned_type = ((data_format & 0 x20) == 0 x00);
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 read 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 pip_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 != PIP_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 ) & ~3 u;
}
max_element_cnt =
(cyapa->aligned_electrodes_rx + 7 ) & ~7 u;
} 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 ) &
~7 u) * electrodes_tx;
} else {
offset = 2 ;
max_element_cnt = cyapa->electrodes_x +
cyapa->electrodes_y;
max_element_cnt = (max_element_cnt + 3 ) & ~3 u;
}
}
memset(cmd, 0 , sizeof (cmd));
cmd_head = (struct pip_app_cmd_head *)cmd;
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &cmd_head->addr);
put_unaligned_le16(sizeof (cmd) - 2 , &cmd_head->length);
cmd_head->report_id = PIP_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_sort_tsg_pip_app_resp_data,
true );
if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
!VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data) ||
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 between 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,
PIP_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,
PIP_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,
PIP_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,
PIP_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 pip_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 pip_app_cmd_head *)cmd;
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof (cmd) - 2 , &app_cmd_head->length);
app_cmd_head->report_id = PIP_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_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) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data))
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 pip_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 pip_app_cmd_head *)cmd;
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
put_unaligned_le16(sizeof (cmd) - 2 , &app_cmd_head->length);
app_cmd_head->report_id = PIP_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_sort_tsg_pip_app_resp_data, true );
if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
!VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data) ||
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_is_pip_app_mode(cyapa))
return -EBUSY;
/* 1. Suspend Scanning*/
error = cyapa_pip_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. Execute 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_pip_resume_scanning(cyapa);
if (resume_error || error)
return resume_error ? resume_error : error;
/* 12. Output data strings */
size = sysfs_emit(buf, "%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 += sysfs_emit_at(buf, 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;
}
bool cyapa_pip_sort_system_info_data(struct cyapa *cyapa,
u8 *buf, int len)
{
/* Check the report id and command code */
if (VALID_CMD_RESP_HEADER(buf, 0 x02))
return true ;
return false ;
}
static int cyapa_gen5_bl_query_data(struct cyapa *cyapa)
{
u8 resp_data[PIP_BL_APP_INFO_RESP_LENGTH];
int resp_len;
int error;
resp_len = sizeof (resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
pip_bl_read_app_info, PIP_BL_READ_APP_INFO_CMD_LENGTH,
resp_data, &resp_len,
500 , cyapa_sort_tsg_pip_bl_resp_data, false );
if (error || resp_len < PIP_BL_APP_INFO_RESP_LENGTH ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data))
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 ];
cyapa->platform_ver = (resp_data[26 ] >> PIP_BL_PLATFORM_VER_SHIFT) &
PIP_BL_PLATFORM_VER_MASK;
return 0 ;
}
static int cyapa_gen5_get_query_data(struct cyapa *cyapa)
{
u8 resp_data[PIP_READ_SYS_INFO_RESP_LENGTH];
int resp_len;
u16 product_family;
int error;
resp_len = sizeof (resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
pip_read_sys_info, PIP_READ_SYS_INFO_CMD_LENGTH,
resp_data, &resp_len,
2000 , cyapa_pip_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 & PIP_PRODUCT_FAMILY_MASK) !=
PIP_PRODUCT_FAMILY_TRACKPAD)
return -EINVAL;
cyapa->platform_ver = (resp_data[49 ] >> PIP_BL_PLATFORM_VER_SHIFT) &
PIP_BL_PLATFORM_VER_MASK;
if (cyapa->gen == CYAPA_GEN5 && cyapa->platform_ver < 2 ) {
/* Gen5 firmware that does not support proximity. */
cyapa->fw_maj_ver = resp_data[15 ];
cyapa->fw_min_ver = resp_data[16 ];
} else {
cyapa->fw_maj_ver = resp_data[9 ];
cyapa->fw_min_ver = resp_data[10 ];
}
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 ] & 0 x01;
cyapa->y_origin = resp_data[65 ] & 0 x01;
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_pip_bl_exit(cyapa);
if (error) {
/* Try to update trackpad product information. */
cyapa_gen5_bl_query_data(cyapa);
goto out;
}
cyapa->state = CYAPA_STATE_GEN5_APP;
fallthrough;
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 required .
*/
error = cyapa_gen5_set_power_mode(cyapa,
PWR_MODE_FULL_ACTIVE, 0 , CYAPA_PM_ACTIVE);
if (error)
dev_warn(dev, "%s: failed to set power active mode.\n" ,
__func__);
/* By default, the trackpad proximity function is enabled. */
if (cyapa->platform_ver >= 2 ) {
error = cyapa_pip_set_proximity(cyapa, true );
if (error)
dev_warn(dev,
"%s: failed to enable proximity.\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 .
*/
bool cyapa_pip_irq_cmd_handler(struct cyapa *cyapa)
{
struct cyapa_pip_cmd_states *pip = &cyapa->cmd_states.pip;
int length;
if (atomic_read(&pip->cmd_issued)) {
/* Polling command response data. */
if (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, pip->irq_cmd_buf,
PIP_RESP_LENGTH_SIZE);
length = get_unaligned_le16(pip->irq_cmd_buf);
length = (length <= PIP_RESP_LENGTH_SIZE) ?
PIP_RESP_LENGTH_SIZE : length;
if (length > PIP_RESP_LENGTH_SIZE)
cyapa_i2c_pip_read(cyapa,
pip->irq_cmd_buf, length);
if (!(pip->resp_sort_func &&
pip->resp_sort_func(cyapa,
pip->irq_cmd_buf, length))) {
/*
* Cover the Gen5 V1 firmware issue .
* The issue is no interrupt would be asserted from
* trackpad device to host for the command response
* ready event . Because when there was a finger touch
* on trackpad device , and the firmware output queue
* won ' t be empty ( always with touch report data ) , so
* the interrupt signal won ' t be asserted again until
* the output queue was previous emptied .
* This issue would happen in the scenario that
* user always has his / her fingers touched on the
* trackpad device during system booting / rebooting .
*/
length = 0 ;
if (pip->resp_len)
length = *pip->resp_len;
cyapa_empty_pip_output_data(cyapa,
pip->resp_data,
&length,
pip->resp_sort_func);
if (pip->resp_len && length != 0 ) {
*pip->resp_len = length;
atomic_dec(&pip->cmd_issued);
complete(&pip->cmd_ready);
}
return false ;
}
if (pip->resp_data && pip->resp_len) {
*pip->resp_len = (*pip->resp_len < length) ?
*pip->resp_len : length;
memcpy(pip->resp_data, pip->irq_cmd_buf,
*pip->resp_len);
}
atomic_dec(&pip->cmd_issued);
complete(&pip->cmd_ready);
return false ;
}
return true ;
}
static void cyapa_pip_report_buttons(struct cyapa *cyapa,
const struct cyapa_pip_report_data *report_data)
{
struct input_dev *input = cyapa->input;
u8 buttons = report_data->report_head[PIP_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_pip_report_proximity(struct cyapa *cyapa,
const struct cyapa_pip_report_data *report_data)
{
struct input_dev *input = cyapa->input;
u8 distance = report_data->report_head[PIP_PROXIMITY_DISTANCE_OFFSET] &
PIP_PROXIMITY_DISTANCE_MASK;
input_report_abs(input, ABS_DISTANCE, distance);
input_sync(input);
}
static void cyapa_pip_report_slot_data(struct cyapa *cyapa,
const struct cyapa_pip_touch_record *touch)
{
struct input_dev *input = cyapa->input;
u8 event_id = PIP_GET_EVENT_ID(touch->touch_tip_event_id);
int slot = PIP_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;
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_X, x);
input_report_abs(input, ABS_MT_POSITION_Y, y);
input_report_abs(input, ABS_DISTANCE, 0 );
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_pip_report_touches(struct cyapa *cyapa,
const struct cyapa_pip_report_data *report_data)
{
struct input_dev *input = cyapa->input;
unsigned int touch_num;
int i;
touch_num = report_data->report_head[PIP_NUMBER_OF_TOUCH_OFFSET] &
PIP_NUMBER_OF_TOUCH_MASK;
for (i = 0 ; i < touch_num; i++)
cyapa_pip_report_slot_data(cyapa,
&report_data->touch_records[i]);
input_mt_sync_frame(input);
input_sync(input);
}
int cyapa_pip_irq_handler(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
struct cyapa_pip_report_data report_data;
unsigned int report_len;
int ret;
if (!cyapa_is_pip_app_mode(cyapa)) {
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,
PIP_RESP_LENGTH_SIZE);
if (ret != PIP_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[PIP_RESP_LENGTH_OFFSET]);
if (report_len < PIP_RESP_LENGTH_SIZE) {
/* Invalid 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 == PIP_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;
}
return cyapa_pip_event_process(cyapa, &report_data);
}
static int cyapa_pip_event_process(struct cyapa *cyapa,
struct cyapa_pip_report_data *report_data)
{
struct device *dev = &cyapa->client->dev;
unsigned int report_len;
u8 report_id;
report_len = get_unaligned_le16(
&report_data->report_head[PIP_RESP_LENGTH_OFFSET]);
/* Idle, no data for report. */
if (report_len == PIP_RESP_LENGTH_SIZE)
return 0 ;
report_id = report_data->report_head[PIP_RESP_REPORT_ID_OFFSET];
if (report_id == PIP_WAKEUP_EVENT_REPORT_ID &&
report_len == PIP_WAKEUP_EVENT_SIZE) {
/*
* Device wake event from deep sleep mode for touch .
* This interrupt event is used to wake system up .
*
* Note :
* It will introduce about 20 ~ 40 ms additional delay
* time in receiving for first valid touch report data .
* The time is used to execute device runtime resume
* process .
*/
pm_runtime_get_sync(dev);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_sync_autosuspend(dev);
return 0 ;
} else if (report_id != PIP_TOUCH_REPORT_ID &&
report_id != PIP_BTN_REPORT_ID &&
report_id != GEN5_OLD_PUSH_BTN_REPORT_ID &&
report_id != PIP_PUSH_BTN_REPORT_ID &&
report_id != PIP_PROXIMITY_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 == PIP_TOUCH_REPORT_ID &&
(report_len < PIP_TOUCH_REPORT_HEAD_SIZE ||
report_len > PIP_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 == PIP_BTN_REPORT_ID ||
report_id == GEN5_OLD_PUSH_BTN_REPORT_ID ||
report_id == PIP_PUSH_BTN_REPORT_ID) &&
(report_len < PIP_BTN_REPORT_HEAD_SIZE ||
report_len > PIP_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 == PIP_PROXIMITY_REPORT_ID &&
report_len != PIP_PROXIMITY_REPORT_SIZE) {
/* Invalid report data length of proximity packet. */
dev_err(dev, "invalid proximity data, length=%d\n" , report_len);
return 0 ;
}
if (report_id == PIP_TOUCH_REPORT_ID)
cyapa_pip_report_touches(cyapa, report_data);
else if (report_id == PIP_PROXIMITY_REPORT_ID)
cyapa_pip_report_proximity(cyapa, report_data);
else
cyapa_pip_report_buttons(cyapa, report_data);
return 0 ;
}
int cyapa_pip_bl_activate(struct cyapa *cyapa) { return 0 ; }
int cyapa_pip_bl_deactivate(struct cyapa *cyapa) { return 0 ; }
const struct cyapa_dev_ops cyapa_gen5_ops = {
.check_fw = cyapa_pip_check_fw,
.bl_enter = cyapa_pip_bl_enter,
.bl_initiate = cyapa_pip_bl_initiate,
.update_fw = cyapa_pip_do_fw_update,
.bl_activate = cyapa_pip_bl_activate,
.bl_deactivate = cyapa_pip_bl_deactivate,
.show_baseline = cyapa_gen5_show_baseline,
.calibrate_store = cyapa_pip_do_calibrate,
.initialize = cyapa_pip_cmd_state_initialize,
.state_parse = cyapa_gen5_state_parse,
.operational_check = cyapa_gen5_do_operational_check,
.irq_handler = cyapa_pip_irq_handler,
.irq_cmd_handler = cyapa_pip_irq_cmd_handler,
.sort_empty_output_data = cyapa_empty_pip_output_data,
.set_power_mode = cyapa_gen5_set_power_mode,
.set_proximity = cyapa_pip_set_proximity,
};
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.83Bemerkung:
(vorverarbeitet am 2026-09-28)
¤
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