Gen5 and Gen6 trackpad devices are able to detect and report object proximity data/events, add this function support in the cyapa driver through the MTB protocol ABS_MT_DISTANCE event. TEST=test on Chromebook.
Signed-off-by: Dudley Du <d...@cypress.com> --- drivers/input/mouse/cyapa.c | 19 ++++++++++++- drivers/input/mouse/cyapa.h | 4 +++ drivers/input/mouse/cyapa_gen3.c | 2 ++ drivers/input/mouse/cyapa_gen5.c | 61 +++++++++++++++++++++++++++++++++++++++- drivers/input/mouse/cyapa_gen6.c | 19 +++++++++++++ 5 files changed, 103 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index dbb53eb..d2a24fc 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -39,6 +39,11 @@ const char product_id[] = "CYTRA"; static int cyapa_reinitialize(struct cyapa *cyapa); +int cyapa_set_not_supported(struct cyapa *cyapa, bool enable) +{ + return -EOPNOTSUPP; +} + bool cyapa_is_pip_bl_mode(struct cyapa *cyapa) { if (cyapa->gen == CYAPA_GEN6 && cyapa->state == CYAPA_STATE_GEN6_BL) @@ -477,6 +482,8 @@ static int cyapa_create_input_dev(struct cyapa *cyapa) 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_MT_DISTANCE, 0, 1, 0, 0); } input_abs_set_res(input, ABS_MT_POSITION_X, @@ -1340,6 +1347,13 @@ static int __maybe_unused cyapa_suspend(struct device *dev) 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); @@ -1360,7 +1374,10 @@ static int __maybe_unused cyapa_resume(struct device *dev) 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); diff --git a/drivers/input/mouse/cyapa.h b/drivers/input/mouse/cyapa.h index 3a211c0..203d7a2 100644 --- a/drivers/input/mouse/cyapa.h +++ b/drivers/input/mouse/cyapa.h @@ -274,6 +274,8 @@ struct cyapa_dev_ops { u8 *, int *, cb_sort); int (*set_power_mode)(struct cyapa *, u8, u16); + + int (*set_proximity)(struct cyapa *, bool); }; struct cyapa_pip_cmd_states { @@ -415,9 +417,11 @@ int cyapa_pip_bl_deactivate(struct cyapa *cyapa); ssize_t cyapa_pip_do_calibrate(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); +int cyapa_pip_set_proximity(struct cyapa *cyapa, bool enable); bool cyapa_pip_irq_cmd_handler(struct cyapa *cyapa); int cyapa_pip_irq_handler(struct cyapa *cyapa); +int cyapa_set_not_supported(struct cyapa *cyapa, bool enable); extern u8 pip_read_sys_info[]; diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index 3884311..6460beb 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -1243,4 +1243,6 @@ const struct cyapa_dev_ops cyapa_gen3_ops = { .irq_cmd_handler = cyapa_gen3_irq_cmd_handler, .sort_empty_output_data = cyapa_gen3_empty_output_data, .set_power_mode = cyapa_gen3_set_power_mode, + + .set_proximity = cyapa_set_not_supported, }; diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c index 4e19dce..519d437 100644 --- a/drivers/input/mouse/cyapa_gen5.c +++ b/drivers/input/mouse/cyapa_gen5.c @@ -52,6 +52,11 @@ #define PIP_WAKEUP_EVENT_REPORT_ID 0x04 #define PIP_PUSH_BTN_REPORT_ID 0x06 #define GEN5_OLD_PUSH_BTN_REPORT_ID 0x05 /* Special for old Gen5 TP. */ +#define PIP_PROXIMITY_REPORT_ID 0x07 + +#define PIP_PROXIMITY_REPORT_SIZE 6 +#define PIP_PROXIMITY_DISTANCE_OFFSET 0x05 +#define PIP_PROXIMITY_DISTANCE_MASK 0x01 #define PIP_TOUCH_REPORT_HEAD_SIZE 7 #define PIP_TOUCH_REPORT_MAX_SIZE 127 @@ -78,6 +83,8 @@ #define PIP_SENSING_MODE_MUTUAL_CAP_FINE 0x00 #define PIP_SENSING_MODE_SELF_CAP 0x02 +#define PIP_SET_PROXIMITY 0x49 + /* Macro of Gen5 */ #define GEN5_BL_MAX_OUTPUT_LENGTH 0x0100 #define GEN5_APP_MAX_OUTPUT_LENGTH 0x00fe @@ -1517,6 +1524,28 @@ static int cyapa_gen5_disable_pip_report(struct cyapa *cyapa) return 0; } +int cyapa_pip_set_proximity(struct cyapa *cyapa, bool enable) +{ + u8 cmd[] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 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[] = { 0x05, 0x00, 0x00, 0x08}; @@ -2491,6 +2520,12 @@ static int cyapa_gen5_do_operational_check(struct cyapa *cyapa) 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_gen5_get_query_data(cyapa); if (error) @@ -2607,6 +2642,17 @@ static void cyapa_pip_report_buttons(struct cyapa *cyapa, 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_MT_DISTANCE, distance); + input_sync(input); +} + static void cyapa_pip_report_slot_data(struct cyapa *cyapa, const struct cyapa_pip_touch_record *touch) { @@ -2628,6 +2674,7 @@ static void cyapa_pip_report_slot_data(struct cyapa *cyapa, 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_MT_DISTANCE, 0); input_report_abs(input, ABS_MT_PRESSURE, touch->z); input_report_abs(input, ABS_MT_TOUCH_MAJOR, @@ -2715,7 +2762,8 @@ int cyapa_pip_irq_handler(struct cyapa *cyapa) } 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_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; @@ -2739,8 +2787,17 @@ int cyapa_pip_irq_handler(struct cyapa *cyapa) 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); @@ -2771,4 +2828,6 @@ const struct cyapa_dev_ops cyapa_gen5_ops = { .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, }; diff --git a/drivers/input/mouse/cyapa_gen6.c b/drivers/input/mouse/cyapa_gen6.c index 2c5776e..e97c1b5 100644 --- a/drivers/input/mouse/cyapa_gen6.c +++ b/drivers/input/mouse/cyapa_gen6.c @@ -310,6 +310,17 @@ static int cyapa_gen6_config_dev_irq(struct cyapa *cyapa, u8 cmd_code) 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 }; @@ -684,6 +695,12 @@ static int cyapa_gen6_operational_check(struct cyapa *cyapa) 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) @@ -724,4 +741,6 @@ const struct cyapa_dev_ops cyapa_gen6_ops = { .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, }; -- 1.9.1 --------------------------------------------------------------- This message and any attachments may contain Cypress (or its subsidiaries) confidential information. If it has been received in error, please advise the sender and immediately delete this message. --------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/