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path: root/drivers/input/mouse/elan_i2c_core.c
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Diffstat (limited to 'drivers/input/mouse/elan_i2c_core.c')
-rw-r--r--drivers/input/mouse/elan_i2c_core.c342
1 files changed, 202 insertions, 140 deletions
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 8719da540383..d4eb59b55bf1 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -34,7 +34,6 @@
#include <linux/completion.h>
#include <linux/of.h>
#include <linux/property.h>
-#include <linux/input/elan-i2c-ids.h>
#include <linux/regulator/consumer.h>
#include <asm/unaligned.h>
@@ -47,15 +46,8 @@
#define ETP_FINGER_WIDTH 15
#define ETP_RETRY_COUNT 3
-#define ETP_MAX_FINGERS 5
-#define ETP_FINGER_DATA_LEN 5
-#define ETP_REPORT_ID 0x5D
-#define ETP_TP_REPORT_ID 0x5E
-#define ETP_REPORT_ID_OFFSET 2
-#define ETP_TOUCH_INFO_OFFSET 3
-#define ETP_FINGER_DATA_OFFSET 4
-#define ETP_HOVER_INFO_OFFSET 30
-#define ETP_MAX_REPORT_LEN 34
+/* quirks to control the device */
+#define ETP_QUIRK_QUICK_WAKEUP BIT(0)
/* The main device structure */
struct elan_tp_data {
@@ -85,11 +77,14 @@ struct elan_tp_data {
u8 sm_version;
u8 iap_version;
u16 fw_checksum;
+ unsigned int report_features;
+ unsigned int report_len;
int pressure_adjustment;
u8 mode;
u16 ic_type;
u16 fw_validpage_count;
- u16 fw_signature_address;
+ u16 fw_page_size;
+ u32 fw_signature_address;
bool irq_wake;
@@ -98,10 +93,41 @@ struct elan_tp_data {
bool baseline_ready;
u8 clickpad;
bool middle_button;
+
+ u32 quirks; /* Various quirks */
};
-static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
- u16 *signature_address)
+static u32 elan_i2c_lookup_quirks(u16 ic_type, u16 product_id)
+{
+ static const struct {
+ u16 ic_type;
+ u16 product_id;
+ u32 quirks;
+ } elan_i2c_quirks[] = {
+ { 0x0D, ETP_PRODUCT_ID_DELBIN, ETP_QUIRK_QUICK_WAKEUP },
+ { 0x0D, ETP_PRODUCT_ID_WHITEBOX, ETP_QUIRK_QUICK_WAKEUP },
+ { 0x10, ETP_PRODUCT_ID_VOXEL, ETP_QUIRK_QUICK_WAKEUP },
+ { 0x14, ETP_PRODUCT_ID_MAGPIE, ETP_QUIRK_QUICK_WAKEUP },
+ { 0x14, ETP_PRODUCT_ID_BOBBA, ETP_QUIRK_QUICK_WAKEUP },
+ };
+ u32 quirks = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(elan_i2c_quirks); i++) {
+ if (elan_i2c_quirks[i].ic_type == ic_type &&
+ elan_i2c_quirks[i].product_id == product_id) {
+ quirks = elan_i2c_quirks[i].quirks;
+ }
+ }
+
+ if (ic_type >= 0x0D && product_id >= 0x123)
+ quirks |= ETP_QUIRK_QUICK_WAKEUP;
+
+ return quirks;
+}
+
+static int elan_get_fwinfo(u16 ic_type, u8 iap_version, u16 *validpage_count,
+ u32 *signature_address, u16 *page_size)
{
switch (ic_type) {
case 0x00:
@@ -126,68 +152,55 @@ static int elan_get_fwinfo(u16 ic_type, u16 *validpage_count,
case 0x10:
*validpage_count = 1024;
break;
+ case 0x11:
+ *validpage_count = 1280;
+ break;
+ case 0x13:
+ *validpage_count = 2048;
+ break;
+ case 0x14:
+ case 0x15:
+ *validpage_count = 1024;
+ break;
default:
/* unknown ic type clear value */
*validpage_count = 0;
*signature_address = 0;
+ *page_size = 0;
return -ENXIO;
}
*signature_address =
(*validpage_count * ETP_FW_PAGE_SIZE) - ETP_FW_SIGNATURE_SIZE;
- return 0;
-}
-
-static int elan_enable_power(struct elan_tp_data *data)
-{
- int repeat = ETP_RETRY_COUNT;
- int error;
-
- error = regulator_enable(data->vcc);
- if (error) {
- dev_err(&data->client->dev,
- "failed to enable regulator: %d\n", error);
- return error;
+ if ((ic_type == 0x14 || ic_type == 0x15) && iap_version >= 2) {
+ *validpage_count /= 8;
+ *page_size = ETP_FW_PAGE_SIZE_512;
+ } else if (ic_type >= 0x0D && iap_version >= 1) {
+ *validpage_count /= 2;
+ *page_size = ETP_FW_PAGE_SIZE_128;
+ } else {
+ *page_size = ETP_FW_PAGE_SIZE;
}
- do {
- error = data->ops->power_control(data->client, true);
- if (error >= 0)
- return 0;
-
- msleep(30);
- } while (--repeat > 0);
-
- dev_err(&data->client->dev, "failed to enable power: %d\n", error);
- return error;
+ return 0;
}
-static int elan_disable_power(struct elan_tp_data *data)
+static int elan_set_power(struct elan_tp_data *data, bool on)
{
int repeat = ETP_RETRY_COUNT;
int error;
do {
- error = data->ops->power_control(data->client, false);
- if (!error) {
- error = regulator_disable(data->vcc);
- if (error) {
- dev_err(&data->client->dev,
- "failed to disable regulator: %d\n",
- error);
- /* Attempt to power the chip back up */
- data->ops->power_control(data->client, true);
- break;
- }
-
+ error = data->ops->power_control(data->client, on);
+ if (error >= 0)
return 0;
- }
msleep(30);
} while (--repeat > 0);
- dev_err(&data->client->dev, "failed to disable power: %d\n", error);
+ dev_err(&data->client->dev, "failed to set power %s: %d\n",
+ on ? "on" : "off", error);
return error;
}
@@ -215,8 +228,13 @@ static int elan_query_product(struct elan_tp_data *data)
if (error)
return error;
- error = data->ops->get_sm_version(data->client, &data->ic_type,
- &data->sm_version, &data->clickpad);
+ error = data->ops->get_pattern(data->client, &data->pattern);
+ if (error)
+ return error;
+
+ error = data->ops->get_sm_version(data->client, data->pattern,
+ &data->ic_type, &data->sm_version,
+ &data->clickpad);
if (error)
return error;
@@ -240,16 +258,18 @@ static int elan_check_ASUS_special_fw(struct elan_tp_data *data)
return false;
}
-static int __elan_initialize(struct elan_tp_data *data)
+static int __elan_initialize(struct elan_tp_data *data, bool skip_reset)
{
struct i2c_client *client = data->client;
bool woken_up = false;
int error;
- error = data->ops->initialize(client);
- if (error) {
- dev_err(&client->dev, "device initialize failed: %d\n", error);
- return error;
+ if (!skip_reset) {
+ error = data->ops->initialize(client);
+ if (error) {
+ dev_err(&client->dev, "device initialize failed: %d\n", error);
+ return error;
+ }
}
error = elan_query_product(data);
@@ -293,16 +313,17 @@ static int __elan_initialize(struct elan_tp_data *data)
return 0;
}
-static int elan_initialize(struct elan_tp_data *data)
+static int elan_initialize(struct elan_tp_data *data, bool skip_reset)
{
int repeat = ETP_RETRY_COUNT;
int error;
do {
- error = __elan_initialize(data);
+ error = __elan_initialize(data, skip_reset);
if (!error)
return 0;
+ skip_reset = false;
msleep(30);
} while (--repeat > 0);
@@ -312,9 +333,9 @@ static int elan_initialize(struct elan_tp_data *data)
static int elan_query_device_info(struct elan_tp_data *data)
{
int error;
- u16 ic_type;
- error = data->ops->get_version(data->client, false, &data->fw_version);
+ error = data->ops->get_version(data->client, data->pattern, false,
+ &data->fw_version);
if (error)
return error;
@@ -323,7 +344,8 @@ static int elan_query_device_info(struct elan_tp_data *data)
if (error)
return error;
- error = data->ops->get_version(data->client, true, &data->iap_version);
+ error = data->ops->get_version(data->client, data->pattern,
+ true, &data->iap_version);
if (error)
return error;
@@ -332,17 +354,18 @@ static int elan_query_device_info(struct elan_tp_data *data)
if (error)
return error;
- error = data->ops->get_pattern(data->client, &data->pattern);
+ error = data->ops->get_report_features(data->client, data->pattern,
+ &data->report_features,
+ &data->report_len);
if (error)
return error;
- if (data->pattern == 0x01)
- ic_type = data->ic_type;
- else
- ic_type = data->iap_version;
+ data->quirks = elan_i2c_lookup_quirks(data->ic_type, data->product_id);
- error = elan_get_fwinfo(ic_type, &data->fw_validpage_count,
- &data->fw_signature_address);
+ error = elan_get_fwinfo(data->ic_type, data->iap_version,
+ &data->fw_validpage_count,
+ &data->fw_signature_address,
+ &data->fw_page_size);
if (error)
dev_warn(&data->client->dev,
"unexpected iap version %#04x (ic type: %#04x), firmware update will not work\n",
@@ -351,16 +374,21 @@ static int elan_query_device_info(struct elan_tp_data *data)
return 0;
}
-static unsigned int elan_convert_resolution(u8 val)
+static unsigned int elan_convert_resolution(u8 val, u8 pattern)
{
/*
- * (value from firmware) * 10 + 790 = dpi
- *
+ * pattern <= 0x01:
+ * (value from firmware) * 10 + 790 = dpi
+ * else
+ * ((value from firmware) + 3) * 100 = dpi
+ */
+ int res = pattern <= 0x01 ?
+ (int)(char)val * 10 + 790 : ((int)(char)val + 3) * 100;
+ /*
* We also have to convert dpi to dots/mm (*10/254 to avoid floating
* point).
*/
-
- return ((int)(char)val * 10 + 790) * 10 / 254;
+ return res * 10 / 254;
}
static int elan_query_device_parameters(struct elan_tp_data *data)
@@ -409,8 +437,8 @@ static int elan_query_device_parameters(struct elan_tp_data *data)
if (error)
return error;
- data->x_res = elan_convert_resolution(hw_x_res);
- data->y_res = elan_convert_resolution(hw_y_res);
+ data->x_res = elan_convert_resolution(hw_x_res, data->pattern);
+ data->y_res = elan_convert_resolution(hw_y_res, data->pattern);
} else {
data->x_res = (data->max_x + 1) / x_mm;
data->y_res = (data->max_y + 1) / y_mm;
@@ -430,14 +458,14 @@ static int elan_query_device_parameters(struct elan_tp_data *data)
* IAP firmware updater related routines
**********************************************************
*/
-static int elan_write_fw_block(struct elan_tp_data *data,
+static int elan_write_fw_block(struct elan_tp_data *data, u16 page_size,
const u8 *page, u16 checksum, int idx)
{
int retry = ETP_RETRY_COUNT;
int error;
do {
- error = data->ops->write_fw_block(data->client,
+ error = data->ops->write_fw_block(data->client, page_size,
page, checksum, idx);
if (!error)
return 0;
@@ -460,21 +488,24 @@ static int __elan_update_firmware(struct elan_tp_data *data,
u16 boot_page_count;
u16 sw_checksum = 0, fw_checksum = 0;
- error = data->ops->prepare_fw_update(client);
+ error = data->ops->prepare_fw_update(client, data->ic_type,
+ data->iap_version,
+ data->fw_page_size);
if (error)
return error;
iap_start_addr = get_unaligned_le16(&fw->data[ETP_IAP_START_ADDR * 2]);
- boot_page_count = (iap_start_addr * 2) / ETP_FW_PAGE_SIZE;
+ boot_page_count = (iap_start_addr * 2) / data->fw_page_size;
for (i = boot_page_count; i < data->fw_validpage_count; i++) {
u16 checksum = 0;
- const u8 *page = &fw->data[i * ETP_FW_PAGE_SIZE];
+ const u8 *page = &fw->data[i * data->fw_page_size];
- for (j = 0; j < ETP_FW_PAGE_SIZE; j += 2)
+ for (j = 0; j < data->fw_page_size; j += 2)
checksum += ((page[j + 1] << 8) | page[j]);
- error = elan_write_fw_block(data, page, checksum, i);
+ error = elan_write_fw_block(data, data->fw_page_size,
+ page, checksum, i);
if (error) {
dev_err(dev, "write page %d fail: %d\n", i, error);
return error;
@@ -520,7 +551,7 @@ static int elan_update_firmware(struct elan_tp_data *data,
data->ops->iap_reset(client);
} else {
/* Reinitialize TP after fw is updated */
- elan_initialize(data);
+ elan_initialize(data, false);
elan_query_device_info(data);
}
@@ -886,24 +917,22 @@ static const struct attribute_group *elan_sysfs_groups[] = {
* Elan isr functions
******************************************************************
*/
-static void elan_report_contact(struct elan_tp_data *data,
- int contact_num, bool contact_valid,
- u8 *finger_data)
+static void elan_report_contact(struct elan_tp_data *data, int contact_num,
+ bool contact_valid, bool high_precision,
+ u8 *packet, u8 *finger_data)
{
struct input_dev *input = data->input;
unsigned int pos_x, pos_y;
- unsigned int pressure, mk_x, mk_y;
- unsigned int area_x, area_y, major, minor;
- unsigned int scaled_pressure;
+ unsigned int pressure, scaled_pressure;
if (contact_valid) {
- pos_x = ((finger_data[0] & 0xf0) << 4) |
- finger_data[1];
- pos_y = ((finger_data[0] & 0x0f) << 8) |
- finger_data[2];
- mk_x = (finger_data[3] & 0x0f);
- mk_y = (finger_data[3] >> 4);
- pressure = finger_data[4];
+ if (high_precision) {
+ pos_x = get_unaligned_be16(&finger_data[0]);
+ pos_y = get_unaligned_be16(&finger_data[2]);
+ } else {
+ pos_x = ((finger_data[0] & 0xf0) << 4) | finger_data[1];
+ pos_y = ((finger_data[0] & 0x0f) << 8) | finger_data[2];
+ }
if (pos_x > data->max_x || pos_y > data->max_y) {
dev_dbg(input->dev.parent,
@@ -913,18 +942,8 @@ static void elan_report_contact(struct elan_tp_data *data,
return;
}
- /*
- * To avoid treating large finger as palm, let's reduce the
- * width x and y per trace.
- */
- area_x = mk_x * (data->width_x - ETP_FWIDTH_REDUCE);
- area_y = mk_y * (data->width_y - ETP_FWIDTH_REDUCE);
-
- major = max(area_x, area_y);
- minor = min(area_x, area_y);
-
+ pressure = finger_data[4];
scaled_pressure = pressure + data->pressure_adjustment;
-
if (scaled_pressure > ETP_MAX_PRESSURE)
scaled_pressure = ETP_MAX_PRESSURE;
@@ -933,16 +952,37 @@ static void elan_report_contact(struct elan_tp_data *data,
input_report_abs(input, ABS_MT_POSITION_X, pos_x);
input_report_abs(input, ABS_MT_POSITION_Y, data->max_y - pos_y);
input_report_abs(input, ABS_MT_PRESSURE, scaled_pressure);
- input_report_abs(input, ABS_TOOL_WIDTH, mk_x);
- input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
- input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
+
+ if (data->report_features & ETP_FEATURE_REPORT_MK) {
+ unsigned int mk_x, mk_y, area_x, area_y;
+ u8 mk_data = high_precision ?
+ packet[ETP_MK_DATA_OFFSET + contact_num] :
+ finger_data[3];
+
+ mk_x = mk_data & 0x0f;
+ mk_y = mk_data >> 4;
+
+ /*
+ * To avoid treating large finger as palm, let's reduce
+ * the width x and y per trace.
+ */
+ area_x = mk_x * (data->width_x - ETP_FWIDTH_REDUCE);
+ area_y = mk_y * (data->width_y - ETP_FWIDTH_REDUCE);
+
+ input_report_abs(input, ABS_TOOL_WIDTH, mk_x);
+ input_report_abs(input, ABS_MT_TOUCH_MAJOR,
+ max(area_x, area_y));
+ input_report_abs(input, ABS_MT_TOUCH_MINOR,
+ min(area_x, area_y));
+ }
} else {
input_mt_slot(input, contact_num);
- input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
+ input_mt_report_slot_inactive(input);
}
}
-static void elan_report_absolute(struct elan_tp_data *data, u8 *packet)
+static void elan_report_absolute(struct elan_tp_data *data, u8 *packet,
+ bool high_precision)
{
struct input_dev *input = data->input;
u8 *finger_data = &packet[ETP_FINGER_DATA_OFFSET];
@@ -951,11 +991,14 @@ static void elan_report_absolute(struct elan_tp_data *data, u8 *packet)
u8 hover_info = packet[ETP_HOVER_INFO_OFFSET];
bool contact_valid, hover_event;
- hover_event = hover_info & 0x40;
- for (i = 0; i < ETP_MAX_FINGERS; i++) {
- contact_valid = tp_info & (1U << (3 + i));
- elan_report_contact(data, i, contact_valid, finger_data);
+ pm_wakeup_event(&data->client->dev, 0);
+ hover_event = hover_info & BIT(6);
+
+ for (i = 0; i < ETP_MAX_FINGERS; i++) {
+ contact_valid = tp_info & BIT(3 + i);
+ elan_report_contact(data, i, contact_valid, high_precision,
+ packet, finger_data);
if (contact_valid)
finger_data += ETP_FINGER_DATA_LEN;
}
@@ -974,6 +1017,8 @@ static void elan_report_trackpoint(struct elan_tp_data *data, u8 *report)
u8 *packet = &report[ETP_REPORT_ID_OFFSET + 1];
int x, y;
+ pm_wakeup_event(&data->client->dev, 0);
+
if (!data->tp_input) {
dev_warn_once(&data->client->dev,
"received a trackpoint report while no trackpoint device has been created. Please report upstream.\n");
@@ -998,7 +1043,6 @@ static void elan_report_trackpoint(struct elan_tp_data *data, u8 *report)
static irqreturn_t elan_isr(int irq, void *dev_id)
{
struct elan_tp_data *data = dev_id;
- struct device *dev = &data->client->dev;
int error;
u8 report[ETP_MAX_REPORT_LEN];
@@ -1012,21 +1056,23 @@ static irqreturn_t elan_isr(int irq, void *dev_id)
goto out;
}
- error = data->ops->get_report(data->client, report);
+ error = data->ops->get_report(data->client, report, data->report_len);
if (error)
goto out;
- pm_wakeup_event(dev, 0);
-
switch (report[ETP_REPORT_ID_OFFSET]) {
case ETP_REPORT_ID:
- elan_report_absolute(data, report);
+ elan_report_absolute(data, report, false);
+ break;
+ case ETP_REPORT_ID2:
+ elan_report_absolute(data, report, true);
break;
case ETP_TP_REPORT_ID:
+ case ETP_TP_REPORT_ID2:
elan_report_trackpoint(data, report);
break;
default:
- dev_err(dev, "invalid report id data (%x)\n",
+ dev_err(&data->client->dev, "invalid report id data (%x)\n",
report[ETP_REPORT_ID_OFFSET]);
}
@@ -1111,7 +1157,9 @@ static int elan_setup_input_device(struct elan_tp_data *data)
input_abs_set_res(input, ABS_X, data->x_res);
input_abs_set_res(input, ABS_Y, data->y_res);
input_set_abs_params(input, ABS_PRESSURE, 0, ETP_MAX_PRESSURE, 0, 0);
- input_set_abs_params(input, ABS_TOOL_WIDTH, 0, ETP_FINGER_WIDTH, 0, 0);
+ if (data->report_features & ETP_FEATURE_REPORT_MK)
+ input_set_abs_params(input, ABS_TOOL_WIDTH,
+ 0, ETP_FINGER_WIDTH, 0, 0);
input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
/* And MT parameters */
@@ -1121,10 +1169,12 @@ static int elan_setup_input_device(struct elan_tp_data *data)
input_abs_set_res(input, ABS_MT_POSITION_Y, data->y_res);
input_set_abs_params(input, ABS_MT_PRESSURE, 0,
ETP_MAX_PRESSURE, 0, 0);
- input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
- ETP_FINGER_WIDTH * max_width, 0, 0);
- input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0,
- ETP_FINGER_WIDTH * min_width, 0, 0);
+ if (data->report_features & ETP_FEATURE_REPORT_MK) {
+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR,
+ 0, ETP_FINGER_WIDTH * max_width, 0, 0);
+ input_set_abs_params(input, ABS_MT_TOUCH_MINOR,
+ 0, ETP_FINGER_WIDTH * min_width, 0, 0);
+ }
data->input = input;
@@ -1202,7 +1252,7 @@ static int elan_probe(struct i2c_client *client,
}
/* Initialize the touchpad. */
- error = elan_initialize(data);
+ error = elan_initialize(data, false);
if (error)
return error;
@@ -1261,12 +1311,6 @@ static int elan_probe(struct i2c_client *client,
return error;
}
- error = devm_device_add_groups(dev, elan_sysfs_groups);
- if (error) {
- dev_err(dev, "failed to create sysfs attributes: %d\n", error);
- return error;
- }
-
error = input_register_device(data->input);
if (error) {
dev_err(dev, "failed to register input device: %d\n", error);
@@ -1315,9 +1359,19 @@ static int __maybe_unused elan_suspend(struct device *dev)
/* Enable wake from IRQ */
data->irq_wake = (enable_irq_wake(client->irq) == 0);
} else {
- ret = elan_disable_power(data);
+ ret = elan_set_power(data, false);
+ if (ret)
+ goto err;
+
+ ret = regulator_disable(data->vcc);
+ if (ret) {
+ dev_err(dev, "error %d disabling regulator\n", ret);
+ /* Attempt to power the chip back up */
+ elan_set_power(data, true);
+ }
}
+err:
mutex_unlock(&data->sysfs_mutex);
return ret;
}
@@ -1328,18 +1382,24 @@ static int __maybe_unused elan_resume(struct device *dev)
struct elan_tp_data *data = i2c_get_clientdata(client);
int error;
- if (device_may_wakeup(dev) && data->irq_wake) {
+ if (!device_may_wakeup(dev)) {
+ error = regulator_enable(data->vcc);
+ if (error) {
+ dev_err(dev, "error %d enabling regulator\n", error);
+ goto err;
+ }
+ } else if (data->irq_wake) {
disable_irq_wake(client->irq);
data->irq_wake = false;
}
- error = elan_enable_power(data);
+ error = elan_set_power(data, true);
if (error) {
dev_err(dev, "power up when resuming failed: %d\n", error);
goto err;
}
- error = elan_initialize(data);
+ error = elan_initialize(data, data->quirks & ETP_QUIRK_QUICK_WAKEUP);
if (error)
dev_err(dev, "initialize when resuming failed: %d\n", error);
@@ -1357,6 +1417,7 @@ static const struct i2c_device_id elan_id[] = {
MODULE_DEVICE_TABLE(i2c, elan_id);
#ifdef CONFIG_ACPI
+#include <linux/input/elan-i2c-ids.h>
MODULE_DEVICE_TABLE(acpi, elan_acpi_id);
#endif
@@ -1375,6 +1436,7 @@ static struct i2c_driver elan_driver = {
.acpi_match_table = ACPI_PTR(elan_acpi_id),
.of_match_table = of_match_ptr(elan_of_match),
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ .dev_groups = elan_sysfs_groups,
},
.probe = elan_probe,
.id_table = elan_id,