* Daniel Kurtz <djkurtz@chromium.org>
* Benson Leung <bleung@chromium.org>
*
- * Copyright (C) 2011-2014 Cypress Semiconductor, Inc.
+ * Copyright (C) 2011-2015 Cypress Semiconductor, Inc.
* Copyright (C) 2011-2012 Google, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/pm_runtime.h>
#include <linux/acpi.h>
+#include <linux/of.h>
#include "cyapa.h"
static int cyapa_reinitialize(struct cyapa *cyapa);
-static inline bool cyapa_is_bootloader_mode(struct cyapa *cyapa)
+bool cyapa_is_pip_bl_mode(struct cyapa *cyapa)
{
+ if (cyapa->gen == CYAPA_GEN6 && cyapa->state == CYAPA_STATE_GEN6_BL)
+ return true;
+
if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_BL)
return true;
+ return false;
+}
+
+bool cyapa_is_pip_app_mode(struct cyapa *cyapa)
+{
+ if (cyapa->gen == CYAPA_GEN6 && cyapa->state == CYAPA_STATE_GEN6_APP)
+ return true;
+
+ if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_APP)
+ return true;
+
+ return false;
+}
+
+static bool cyapa_is_bootloader_mode(struct cyapa *cyapa)
+{
+ if (cyapa_is_pip_bl_mode(cyapa))
+ return true;
+
if (cyapa->gen == CYAPA_GEN3 &&
cyapa->state >= CYAPA_STATE_BL_BUSY &&
cyapa->state <= CYAPA_STATE_BL_ACTIVE)
static inline bool cyapa_is_operational_mode(struct cyapa *cyapa)
{
- if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_APP)
+ if (cyapa_is_pip_app_mode(cyapa))
return true;
if (cyapa->gen == CYAPA_GEN3 && cyapa->state == CYAPA_STATE_OP)
if (!error)
goto out_detected;
}
+ if (cyapa->gen == CYAPA_GEN_UNKNOWN ||
+ cyapa->gen == CYAPA_GEN6 ||
+ cyapa->gen == CYAPA_GEN5) {
+ error = cyapa_pip_state_parse(cyapa,
+ status, BL_STATUS_SIZE);
+ if (!error)
+ goto out_detected;
+ }
+ /* For old Gen5 trackpads detecting. */
if ((cyapa->gen == CYAPA_GEN_UNKNOWN ||
cyapa->gen == CYAPA_GEN5) &&
!smbus && even_addr) {
return error;
switch (cyapa->gen) {
+ case CYAPA_GEN6:
+ cyapa->ops = &cyapa_gen6_ops;
+ break;
case CYAPA_GEN5:
cyapa->ops = &cyapa_gen5_ops;
break;
/*
* Returns 0 on device detected, negative errno on no device detected.
- * And when the device is detected and opertaional, it will be reset to
+ * And when the device is detected and operational, it will be reset to
* full power active mode automatically.
*/
static int cyapa_detect(struct cyapa *cyapa)
{
struct cyapa *cyapa = input_get_drvdata(input);
struct i2c_client *client = cyapa->client;
+ struct device *dev = &client->dev;
int error;
error = mutex_lock_interruptible(&cyapa->state_sync_lock);
* when in operational mode.
*/
error = cyapa->ops->set_power_mode(cyapa,
- PWR_MODE_FULL_ACTIVE, 0);
+ PWR_MODE_FULL_ACTIVE, 0, false);
if (error) {
- dev_warn(&client->dev,
- "set active power failed: %d\n", error);
+ dev_warn(dev, "set active power failed: %d\n", error);
goto out;
}
} else {
}
enable_irq(client->irq);
- if (!pm_runtime_enabled(&client->dev)) {
- pm_runtime_set_active(&client->dev);
- pm_runtime_enable(&client->dev);
+ if (!pm_runtime_enabled(dev)) {
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
}
+
+ pm_runtime_get_sync(dev);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_sync_autosuspend(dev);
out:
mutex_unlock(&cyapa->state_sync_lock);
return error;
{
struct cyapa *cyapa = input_get_drvdata(input);
struct i2c_client *client = cyapa->client;
+ struct device *dev = &cyapa->client->dev;
mutex_lock(&cyapa->state_sync_lock);
disable_irq(client->irq);
- if (pm_runtime_enabled(&client->dev))
- pm_runtime_disable(&client->dev);
- pm_runtime_set_suspended(&client->dev);
+ if (pm_runtime_enabled(dev))
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
if (cyapa->operational)
- cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
+ cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0, false);
mutex_unlock(&cyapa->state_sync_lock);
}
if (cyapa->gen >= CYAPA_GEN5) {
input_set_abs_params(input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
input_set_abs_params(input, ABS_MT_WIDTH_MINOR, 0, 255, 0, 0);
+ input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
}
input_abs_set_res(input, ABS_MT_POSITION_X,
*/
if (!input || cyapa->operational)
cyapa->ops->set_power_mode(cyapa,
- PWR_MODE_FULL_ACTIVE, 0);
+ PWR_MODE_FULL_ACTIVE, 0, false);
/* Gen3 always using polling mode for command. */
if (cyapa->gen >= CYAPA_GEN5)
enable_irq(cyapa->client->irq);
if (cyapa->gen >= CYAPA_GEN5)
disable_irq(cyapa->client->irq);
if (!input || cyapa->operational)
- cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
+ cyapa->ops->set_power_mode(cyapa,
+ PWR_MODE_OFF, 0, false);
}
}
error = cyapa_gen3_ops.initialize(cyapa);
if (!error)
error = cyapa_gen5_ops.initialize(cyapa);
+ if (!error)
+ error = cyapa_gen6_ops.initialize(cyapa);
if (error)
return error;
/* Power down the device until we need it. */
if (cyapa->operational)
- cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
+ cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0, false);
return 0;
}
/* Avoid command failures when TP was in OFF state. */
if (cyapa->operational)
- cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0);
+ cyapa->ops->set_power_mode(cyapa,
+ PWR_MODE_FULL_ACTIVE, 0, false);
error = cyapa_detect(cyapa);
if (error)
if (!input || !input->users) {
/* Reset to power OFF state to save power when no user open. */
if (cyapa->operational)
- cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0);
+ cyapa->ops->set_power_mode(cyapa,
+ PWR_MODE_OFF, 0, false);
} else if (!error && cyapa->operational) {
/*
* Make sure only enable runtime PM when device is
*/
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
+
+ pm_runtime_get_sync(dev);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_sync_autosuspend(dev);
}
return error;
{
struct cyapa *cyapa = dev_id;
struct device *dev = &cyapa->client->dev;
+ int error;
- pm_runtime_get_sync(dev);
if (device_may_wakeup(dev))
pm_wakeup_event(dev, 0);
- /* Interrupt event maybe cuased by host command to trackpad device. */
+ /* Interrupt event can be caused by host command to trackpad device. */
if (cyapa->ops->irq_cmd_handler(cyapa)) {
/*
* Interrupt event maybe from trackpad device input reporting.
*/
if (!cyapa->input) {
/*
- * Still in probling or in firware image
- * udpating or reading.
+ * Still in probing or in firmware image
+ * updating or reading.
*/
cyapa->ops->sort_empty_output_data(cyapa,
NULL, NULL, NULL);
goto out;
}
- if (!cyapa->operational || cyapa->ops->irq_handler(cyapa)) {
+ if (cyapa->operational) {
+ error = cyapa->ops->irq_handler(cyapa);
+
+ /*
+ * Apply runtime power management to touch report event
+ * except the events caused by the command responses.
+ * 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);
+ }
+
+ if (!cyapa->operational || error) {
if (!mutex_trylock(&cyapa->state_sync_lock)) {
cyapa->ops->sort_empty_output_data(cyapa,
NULL, NULL, NULL);
}
out:
- pm_runtime_mark_last_busy(dev);
- pm_runtime_put_sync_autosuspend(dev);
return IRQ_HANDLED;
}
dev_dbg(dev, "firmware update successfully done.\n");
/*
- * Redetect trackpad device states because firmware update process
+ * Re-detect trackpad device states because firmware update process
* will reset trackpad device into bootloader mode.
*/
ret = cyapa_reinitialize(cyapa);
if (ret) {
- dev_err(dev, "failed to redetect after updated: %d\n", ret);
+ dev_err(dev, "failed to re-detect after updated: %d\n", ret);
error = error ? error : ret;
}
case CYAPA_STATE_BL_ACTIVE:
return "bootloader active";
case CYAPA_STATE_GEN5_BL:
+ case CYAPA_STATE_GEN6_BL:
return "bootloader";
case CYAPA_STATE_OP:
case CYAPA_STATE_GEN5_APP:
+ case CYAPA_STATE_GEN6_APP:
return "operational"; /* Normal valid state. */
default:
return "invalid mode";
sysfs_remove_group(&cyapa->client->dev.kobj, &cyapa_sysfs_group);
}
+static void cyapa_disable_regulator(void *data)
+{
+ struct cyapa *cyapa = data;
+
+ regulator_disable(cyapa->vcc);
+}
+
static int cyapa_probe(struct i2c_client *client,
const struct i2c_device_id *dev_id)
{
sprintf(cyapa->phys, "i2c-%d-%04x/input0", client->adapter->nr,
client->addr);
+ cyapa->vcc = devm_regulator_get(dev, "vcc");
+ if (IS_ERR(cyapa->vcc)) {
+ error = PTR_ERR(cyapa->vcc);
+ dev_err(dev, "failed to get vcc regulator: %d\n", error);
+ return error;
+ }
+
+ error = regulator_enable(cyapa->vcc);
+ if (error) {
+ dev_err(dev, "failed to enable regulator: %d\n", error);
+ return error;
+ }
+
+ error = devm_add_action(dev, cyapa_disable_regulator, cyapa);
+ if (error) {
+ cyapa_disable_regulator(cyapa);
+ dev_err(dev, "failed to add disable regulator action: %d\n",
+ error);
+ return error;
+ }
+
error = cyapa_initialize(cyapa);
if (error) {
dev_err(dev, "failed to detect and initialize tp device.\n");
power_mode = device_may_wakeup(dev) ? cyapa->suspend_power_mode
: PWR_MODE_OFF;
error = cyapa->ops->set_power_mode(cyapa, power_mode,
- cyapa->suspend_sleep_time);
+ cyapa->suspend_sleep_time, true);
if (error)
dev_err(dev, "suspend set power mode failed: %d\n",
error);
}
+ /*
+ * Disable proximity interrupt when system idle, want true touch to
+ * wake the system.
+ */
+ if (cyapa->dev_pwr_mode != PWR_MODE_OFF)
+ cyapa->ops->set_proximity(cyapa, false);
+
if (device_may_wakeup(dev))
cyapa->irq_wake = (enable_irq_wake(client->irq) == 0);
cyapa->irq_wake = false;
}
- /* Update device states and runtime PM states. */
+ /*
+ * Update device states and runtime PM states.
+ * Re-Enable proximity interrupt after enter operational mode.
+ */
error = cyapa_reinitialize(cyapa);
if (error)
dev_warn(dev, "failed to reinitialize TP device: %d\n", error);
error = cyapa->ops->set_power_mode(cyapa,
cyapa->runtime_suspend_power_mode,
- cyapa->runtime_suspend_sleep_time);
+ cyapa->runtime_suspend_sleep_time,
+ false);
if (error)
dev_warn(dev, "runtime suspend failed: %d\n", error);
struct cyapa *cyapa = dev_get_drvdata(dev);
int error;
- error = cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0);
+ error = cyapa->ops->set_power_mode(cyapa,
+ PWR_MODE_FULL_ACTIVE, 0, false);
if (error)
dev_warn(dev, "runtime resume failed: %d\n", error);
static const struct acpi_device_id cyapa_acpi_id[] = {
{ "CYAP0000", 0 }, /* Gen3 trackpad with 0x67 I2C address. */
{ "CYAP0001", 0 }, /* Gen5 trackpad with 0x24 I2C address. */
+ { "CYAP0002", 0 }, /* Gen6 trackpad with 0x24 I2C address. */
{ }
};
MODULE_DEVICE_TABLE(acpi, cyapa_acpi_id);
#endif
+#ifdef CONFIG_OF
+static const struct of_device_id cyapa_of_match[] = {
+ { .compatible = "cypress,cyapa" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, cyapa_of_match);
+#endif
+
static struct i2c_driver cyapa_driver = {
.driver = {
.name = "cyapa",
- .owner = THIS_MODULE,
.pm = &cyapa_pm_ops,
.acpi_match_table = ACPI_PTR(cyapa_acpi_id),
+ .of_match_table = of_match_ptr(cyapa_of_match),
},
.probe = cyapa_probe,
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