diff options
Diffstat (limited to 'drivers/input/mouse/elan_i2c_core.c')
-rw-r--r-- | drivers/input/mouse/elan_i2c_core.c | 342 |
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, |