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linux-sg2042/drivers/input/mouse/cyapa_gen6.c

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/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
*
* Copyright (C) 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 "cyapa.h"
#define GEN6_ENABLE_CMD_IRQ 0x41
#define GEN6_DISABLE_CMD_IRQ 0x42
#define GEN6_ENABLE_DEV_IRQ 0x43
#define GEN6_DISABLE_DEV_IRQ 0x44
#define GEN6_POWER_MODE_ACTIVE 0x01
#define GEN6_POWER_MODE_LP_MODE1 0x02
#define GEN6_POWER_MODE_LP_MODE2 0x03
#define GEN6_POWER_MODE_BTN_ONLY 0x04
#define GEN6_SET_POWER_MODE_INTERVAL 0x47
#define GEN6_GET_POWER_MODE_INTERVAL 0x48
#define GEN6_MAX_RX_NUM 14
#define GEN6_RETRIEVE_DATA_ID_RX_ATTENURATOR_IDAC 0x00
#define GEN6_RETRIEVE_DATA_ID_ATTENURATOR_TRIM 0x12
struct pip_app_cmd_head {
__le16 addr;
__le16 length;
u8 report_id;
u8 resv; /* Reserved, must be 0 */
u8 cmd_code; /* bit7: resv, set to 0; bit6~0: command code.*/
} __packed;
struct pip_app_resp_head {
__le16 length;
u8 report_id;
u8 resv; /* Reserved, must be 0 */
u8 cmd_code; /* bit7: TGL; bit6~0: command code.*/
/*
* The value of data_status can be the first byte of data or
* the command status or the unsupported command code depending on the
* requested command code.
*/
u8 data_status;
} __packed;
struct pip_fixed_info {
u8 silicon_id_high;
u8 silicon_id_low;
u8 family_id;
};
static u8 pip_get_bl_info[] = {
0x04, 0x00, 0x0B, 0x00, 0x40, 0x00, 0x01, 0x38,
0x00, 0x00, 0x70, 0x9E, 0x17
};
static bool cyapa_sort_pip_hid_descriptor_data(struct cyapa *cyapa,
u8 *buf, int len)
{
if (len != PIP_HID_DESCRIPTOR_SIZE)
return false;
if (buf[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_APP_REPORT_ID ||
buf[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_BL_REPORT_ID)
return true;
return false;
}
static int cyapa_get_pip_fixed_info(struct cyapa *cyapa,
struct pip_fixed_info *pip_info, bool is_bootloader)
{
u8 resp_data[PIP_READ_SYS_INFO_RESP_LENGTH];
int resp_len;
u16 product_family;
int error;
if (is_bootloader) {
/* Read Bootloader Information to determine Gen5 or Gen6. */
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
pip_get_bl_info, sizeof(pip_get_bl_info),
resp_data, &resp_len,
2000, cyapa_sort_tsg_pip_bl_resp_data,
false);
if (error || resp_len < PIP_BL_GET_INFO_RESP_LENGTH)
return error ? error : -EIO;
pip_info->family_id = resp_data[8];
pip_info->silicon_id_low = resp_data[10];
pip_info->silicon_id_high = resp_data[11];
return 0;
}
/* Get App System Information to determine Gen5 or Gen6. */
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 < PIP_READ_SYS_INFO_RESP_LENGTH)
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;
pip_info->family_id = resp_data[19];
pip_info->silicon_id_low = resp_data[21];
pip_info->silicon_id_high = resp_data[22];
return 0;
}
int cyapa_pip_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
{
u8 cmd[] = { 0x01, 0x00};
struct pip_fixed_info pip_info;
u8 resp_data[PIP_HID_DESCRIPTOR_SIZE];
int resp_len;
bool is_bootloader;
int error;
cyapa->state = CYAPA_STATE_NO_DEVICE;
/* Try to wake from it deep sleep state if it is. */
cyapa_pip_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_ON);
/* Empty the buffer queue to get fresh data with later commands. */
cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
/*
* Read description info from trackpad device to determine running in
* APP mode or Bootloader mode.
*/
resp_len = PIP_HID_DESCRIPTOR_SIZE;
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
cmd, sizeof(cmd),
resp_data, &resp_len,
300,
cyapa_sort_pip_hid_descriptor_data,
false);
if (error)
return error;
if (resp_data[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_BL_REPORT_ID)
is_bootloader = true;
else if (resp_data[PIP_RESP_REPORT_ID_OFFSET] == PIP_HID_APP_REPORT_ID)
is_bootloader = false;
else
return -EAGAIN;
/* Get PIP fixed information to determine Gen5 or Gen6. */
memset(&pip_info, 0, sizeof(struct pip_fixed_info));
error = cyapa_get_pip_fixed_info(cyapa, &pip_info, is_bootloader);
if (error)
return error;
if (pip_info.family_id == 0x9B && pip_info.silicon_id_high == 0x0B) {
cyapa->gen = CYAPA_GEN6;
cyapa->state = is_bootloader ? CYAPA_STATE_GEN6_BL
: CYAPA_STATE_GEN6_APP;
} else if (pip_info.family_id == 0x91 &&
pip_info.silicon_id_high == 0x02) {
cyapa->gen = CYAPA_GEN5;
cyapa->state = is_bootloader ? CYAPA_STATE_GEN5_BL
: CYAPA_STATE_GEN5_APP;
}
return 0;
}
static int cyapa_gen6_read_sys_info(struct cyapa *cyapa)
{
u8 resp_data[PIP_READ_SYS_INFO_RESP_LENGTH];
int resp_len;
u16 product_family;
u8 rotat_align;
int error;
/* Get App System Information to determine Gen5 or Gen6. */
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[67] >> PIP_BL_PLATFORM_VER_SHIFT) &
PIP_BL_PLATFORM_VER_MASK;
cyapa->fw_maj_ver = resp_data[9];
cyapa->fw_min_ver = resp_data[10];
cyapa->electrodes_x = resp_data[33];
cyapa->electrodes_y = resp_data[34];
cyapa->physical_size_x = get_unaligned_le16(&resp_data[35]) / 100;
cyapa->physical_size_y = get_unaligned_le16(&resp_data[37]) / 100;
cyapa->max_abs_x = get_unaligned_le16(&resp_data[39]);
cyapa->max_abs_y = get_unaligned_le16(&resp_data[41]);
cyapa->max_z = get_unaligned_le16(&resp_data[43]);
cyapa->x_origin = resp_data[45] & 0x01;
cyapa->y_origin = resp_data[46] & 0x01;
cyapa->btn_capability = (resp_data[70] << 3) & CAPABILITY_BTN_MASK;
memcpy(&cyapa->product_id[0], &resp_data[51], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &resp_data[56], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &resp_data[62], 2);
cyapa->product_id[15] = '\0';
/* Get the number of Rx electrodes. */
rotat_align = resp_data[68];
cyapa->electrodes_rx =
rotat_align ? cyapa->electrodes_y : cyapa->electrodes_x;
cyapa->aligned_electrodes_rx = (cyapa->electrodes_rx + 3) & ~3u;
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_gen6_bl_read_app_info(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;
cyapa->fw_maj_ver = resp_data[8];
cyapa->fw_min_ver = resp_data[9];
cyapa->platform_ver = (resp_data[12] >> PIP_BL_PLATFORM_VER_SHIFT) &
PIP_BL_PLATFORM_VER_MASK;
memcpy(&cyapa->product_id[0], &resp_data[13], 5);
cyapa->product_id[5] = '-';
memcpy(&cyapa->product_id[6], &resp_data[18], 6);
cyapa->product_id[12] = '-';
memcpy(&cyapa->product_id[13], &resp_data[24], 2);
cyapa->product_id[15] = '\0';
return 0;
}
static int cyapa_gen6_config_dev_irq(struct cyapa *cyapa, u8 cmd_code)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, cmd_code };
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, cmd_code) ||
!PIP_CMD_COMPLETE_SUCCESS(resp_data)
)
return error < 0 ? error : -EINVAL;
return 0;
}
static int cyapa_gen6_set_proximity(struct cyapa *cyapa, bool enable)
{
int error;
cyapa_gen6_config_dev_irq(cyapa, GEN6_DISABLE_CMD_IRQ);
error = cyapa_pip_set_proximity(cyapa, enable);
cyapa_gen6_config_dev_irq(cyapa, GEN6_ENABLE_CMD_IRQ);
return error;
}
static int cyapa_gen6_change_power_state(struct cyapa *cyapa, u8 power_mode)
{
u8 cmd[] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 0x46, power_mode };
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, 0x46))
return error < 0 ? error : -EINVAL;
/* New power state applied in device not match the set power state. */
if (resp_data[5] != power_mode)
return -EAGAIN;
return 0;
}
static int cyapa_gen6_set_interval_setting(struct cyapa *cyapa,
struct gen6_interval_setting *interval_setting)
{
struct gen6_set_interval_cmd {
__le16 addr;
__le16 length;
u8 report_id;
u8 rsvd; /* Reserved, must be 0 */
u8 cmd_code;
__le16 active_interval;
__le16 lp1_interval;
__le16 lp2_interval;
} __packed set_interval_cmd;
u8 resp_data[11];
int resp_len;
int error;
memset(&set_interval_cmd, 0, sizeof(set_interval_cmd));
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &set_interval_cmd.addr);
put_unaligned_le16(sizeof(set_interval_cmd) - 2,
&set_interval_cmd.length);
set_interval_cmd.report_id = PIP_APP_CMD_REPORT_ID;
set_interval_cmd.cmd_code = GEN6_SET_POWER_MODE_INTERVAL;
put_unaligned_le16(interval_setting->active_interval,
&set_interval_cmd.active_interval);
put_unaligned_le16(interval_setting->lp1_interval,
&set_interval_cmd.lp1_interval);
put_unaligned_le16(interval_setting->lp2_interval,
&set_interval_cmd.lp2_interval);
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
(u8 *)&set_interval_cmd, sizeof(set_interval_cmd),
resp_data, &resp_len,
500, cyapa_sort_tsg_pip_app_resp_data, false);
if (error ||
!VALID_CMD_RESP_HEADER(resp_data, GEN6_SET_POWER_MODE_INTERVAL))
return error < 0 ? error : -EINVAL;
/* Get the real set intervals from response. */
interval_setting->active_interval = get_unaligned_le16(&resp_data[5]);
interval_setting->lp1_interval = get_unaligned_le16(&resp_data[7]);
interval_setting->lp2_interval = get_unaligned_le16(&resp_data[9]);
return 0;
}
static int cyapa_gen6_get_interval_setting(struct cyapa *cyapa,
struct gen6_interval_setting *interval_setting)
{
u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00,
GEN6_GET_POWER_MODE_INTERVAL };
u8 resp_data[11];
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, GEN6_GET_POWER_MODE_INTERVAL))
return error < 0 ? error : -EINVAL;
interval_setting->active_interval = get_unaligned_le16(&resp_data[5]);
interval_setting->lp1_interval = get_unaligned_le16(&resp_data[7]);
interval_setting->lp2_interval = get_unaligned_le16(&resp_data[9]);
return 0;
}
static int cyapa_gen6_deep_sleep(struct cyapa *cyapa, u8 state)
{
u8 ping[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x00 };
if (state == PIP_DEEP_SLEEP_STATE_ON)
/*
* Send ping command to notify device prepare for wake up
* when it's in deep sleep mode. At this time, device will
* response nothing except an I2C NAK.
*/
cyapa_i2c_pip_write(cyapa, ping, sizeof(ping));
return cyapa_pip_deep_sleep(cyapa, state);
}
static int cyapa_gen6_set_power_mode(struct cyapa *cyapa,
u8 power_mode, u16 sleep_time, enum cyapa_pm_stage pm_stage)
{
struct device *dev = &cyapa->client->dev;
struct gen6_interval_setting *interval_setting =
&cyapa->gen6_interval_setting;
u8 lp_mode;
int error;
if (cyapa->state != CYAPA_STATE_GEN6_APP)
return 0;
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)
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. */
return 0;
}
}
if (power_mode == PWR_MODE_OFF) {
cyapa_gen6_config_dev_irq(cyapa, GEN6_DISABLE_CMD_IRQ);
error = cyapa_gen6_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_OFF);
if (error) {
dev_err(dev, "enter deep sleep fail: %d\n", error);
return error;
}
PIP_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF);
return 0;
}
/*
* When trackpad in power off mode, it cannot change to other power
* state directly, must be wake up from sleep firstly, then
* continue to do next power sate change.
*/
if (PIP_DEV_GET_PWR_STATE(cyapa) == PWR_MODE_OFF) {
error = cyapa_gen6_deep_sleep(cyapa, PIP_DEEP_SLEEP_STATE_ON);
if (error) {
dev_err(dev, "deep sleep wake fail: %d\n", error);
return error;
}
}
/*
* Disable device assert interrupts for command response to avoid
* disturbing system suspending or hibernating process.
*/
cyapa_gen6_config_dev_irq(cyapa, GEN6_DISABLE_CMD_IRQ);
if (power_mode == PWR_MODE_FULL_ACTIVE) {
error = cyapa_gen6_change_power_state(cyapa,
GEN6_POWER_MODE_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);
/* Sync the interval setting from device. */
cyapa_gen6_get_interval_setting(cyapa, interval_setting);
} else if (power_mode == PWR_MODE_BTN_ONLY) {
error = cyapa_gen6_change_power_state(cyapa,
GEN6_POWER_MODE_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 {
/*
* Gen6 internally supports to 2 low power scan interval time,
* so can help to switch power mode quickly.
* such as runtime suspend and system suspend.
*/
if (interval_setting->lp1_interval == sleep_time) {
lp_mode = GEN6_POWER_MODE_LP_MODE1;
} else if (interval_setting->lp2_interval == sleep_time) {
lp_mode = GEN6_POWER_MODE_LP_MODE2;
} else {
if (interval_setting->lp1_interval == 0) {
interval_setting->lp1_interval = sleep_time;
lp_mode = GEN6_POWER_MODE_LP_MODE1;
} else {
interval_setting->lp2_interval = sleep_time;
lp_mode = GEN6_POWER_MODE_LP_MODE2;
}
cyapa_gen6_set_interval_setting(cyapa,
interval_setting);
}
error = cyapa_gen6_change_power_state(cyapa, lp_mode);
if (error) {
dev_err(dev, "set power state to 0x%02x failed: %d\n",
lp_mode, error);
goto out;
}
PIP_DEV_SET_SLEEP_TIME(cyapa, sleep_time);
PIP_DEV_SET_PWR_STATE(cyapa,
cyapa_sleep_time_to_pwr_cmd(sleep_time));
}
out:
cyapa_gen6_config_dev_irq(cyapa, GEN6_ENABLE_CMD_IRQ);
return error;
}
static int cyapa_gen6_initialize(struct cyapa *cyapa)
{
return 0;
}
static int cyapa_pip_retrieve_data_structure(struct cyapa *cyapa,
u16 read_offset, u16 read_len, u8 data_id,
u8 *data, int *data_buf_lens)
{
struct retrieve_data_struct_cmd {
struct pip_app_cmd_head head;
__le16 read_offset;
__le16 read_length;
u8 data_id;
} __packed cmd;
u8 resp_data[GEN6_MAX_RX_NUM + 10];
int resp_len;
int error;
memset(&cmd, 0, sizeof(cmd));
put_unaligned_le16(PIP_OUTPUT_REPORT_ADDR, &cmd.head.addr);
put_unaligned_le16(sizeof(cmd), &cmd.head.length - 2);
cmd.head.report_id = PIP_APP_CMD_REPORT_ID;
cmd.head.cmd_code = PIP_RETRIEVE_DATA_STRUCTURE;
put_unaligned_le16(read_offset, &cmd.read_offset);
put_unaligned_le16(read_len, &cmd.read_length);
cmd.data_id = data_id;
resp_len = sizeof(resp_data);
error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
(u8 *)&cmd, sizeof(cmd),
resp_data, &resp_len,
500, cyapa_sort_tsg_pip_app_resp_data,
true);
if (error || !PIP_CMD_COMPLETE_SUCCESS(resp_data) ||
resp_data[6] != data_id ||
!VALID_CMD_RESP_HEADER(resp_data, PIP_RETRIEVE_DATA_STRUCTURE))
return (error < 0) ? error : -EAGAIN;
read_len = get_unaligned_le16(&resp_data[7]);
if (*data_buf_lens < read_len) {
*data_buf_lens = read_len;
return -ENOBUFS;
}
memcpy(data, &resp_data[10], read_len);
*data_buf_lens = read_len;
return 0;
}
static ssize_t cyapa_gen6_show_baseline(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cyapa *cyapa = dev_get_drvdata(dev);
u8 data[GEN6_MAX_RX_NUM];
int data_len;
int size = 0;
int i;
int error;
int resume_error;
if (!cyapa_is_pip_app_mode(cyapa))
return -EBUSY;
/* 1. Suspend Scanning*/
error = cyapa_pip_suspend_scanning(cyapa);
if (error)
return error;
/* 2. IDAC and RX Attenuator Calibration Data (Center Frequency). */
data_len = sizeof(data);
error = cyapa_pip_retrieve_data_structure(cyapa, 0, data_len,
GEN6_RETRIEVE_DATA_ID_RX_ATTENURATOR_IDAC,
data, &data_len);
if (error)
goto resume_scanning;
size = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d ",
data[0], /* RX Attenuator Mutual */
data[1], /* IDAC Mutual */
data[2], /* RX Attenuator Self RX */
data[3], /* IDAC Self RX */
data[4], /* RX Attenuator Self TX */
data[5] /* IDAC Self TX */
);
/* 3. Read Attenuator Trim. */
data_len = sizeof(data);
error = cyapa_pip_retrieve_data_structure(cyapa, 0, data_len,
GEN6_RETRIEVE_DATA_ID_ATTENURATOR_TRIM,
data, &data_len);
if (error)
goto resume_scanning;
/* set attenuator trim values. */
for (i = 0; i < data_len; i++)
size += scnprintf(buf + size, PAGE_SIZE - size, "%d ", data[i]);
size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
resume_scanning:
/* 4. Resume Scanning*/
resume_error = cyapa_pip_resume_scanning(cyapa);
if (resume_error || error) {
memset(buf, 0, PAGE_SIZE);
return resume_error ? resume_error : error;
}
return size;
}
static int cyapa_gen6_operational_check(struct cyapa *cyapa)
{
struct device *dev = &cyapa->client->dev;
int error;
if (cyapa->gen != CYAPA_GEN6)
return -ENODEV;
switch (cyapa->state) {
case CYAPA_STATE_GEN6_BL:
error = cyapa_pip_bl_exit(cyapa);
if (error) {
/* Try to update trackpad product information. */
cyapa_gen6_bl_read_app_info(cyapa);
goto out;
}
cyapa->state = CYAPA_STATE_GEN6_APP;
/* fall through */
case CYAPA_STATE_GEN6_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_gen6_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. */
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_gen6_read_sys_info(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;
}
const struct cyapa_dev_ops cyapa_gen6_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_gen6_show_baseline,
.calibrate_store = cyapa_pip_do_calibrate,
.initialize = cyapa_gen6_initialize,
.state_parse = cyapa_pip_state_parse,
.operational_check = cyapa_gen6_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_gen6_set_power_mode,
.set_proximity = cyapa_gen6_set_proximity,
};
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