Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755868Ab2JaJSD (ORCPT ); Wed, 31 Oct 2012 05:18:03 -0400 Received: from tw-mx2.synaptics.com.tw ([203.163.83.68]:26235 "EHLO tw-mx2.synaptics.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752675Ab2JaJR4 convert rfc822-to-8bit (ORCPT ); Wed, 31 Oct 2012 05:17:56 -0400 From: Alexandra Chin To: Henrik Rydberg CC: Dmitry Torokhov , Linux Kernel , Linux Input , Linus Walleij , Naveen Kumar Gaddipati , Mahesh Srinivasan , Alex Chang , Scott Lin , Christopher Heiny Subject: [PATCH] staging: ste_rmi4: Convert to Type-B support Thread-Topic: [PATCH] staging: ste_rmi4: Convert to Type-B support Thread-Index: AQHNt0iaVH28WIkHEkKTYbYZL4AhCQ== Date: Wed, 31 Oct 2012 09:17:52 +0000 Message-ID: References: <20121003180121.GA4198@polaris.bitmath.org> Accept-Language: zh-TW, en-US Content-Language: zh-HK X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.14.51.94] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7643 Lines: 214 >From 4d0dbd9ee464027e7c40658abb9dd019be520e4d Mon Sep 17 00:00:00 2001 From: Alexandra Chin Date: Wed, 31 Oct 2012 16:21:12 +0800 Subject: [PATCH] staging: ste_rmi4: Convert to Type-B support This patch: - Convert to MT-B because Synaptics touch devices are capable of tracking identifiable fingers - Modify maximum supported fingers up to 10 - Set INPUT_PROP_POINTER for direct input devices Any comments and suggestions are welcomed. Alexandra Chin Signed-off-by: Alexandra Chin --- drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c | 82 ++++++++++++------------ 1 files changed, 41 insertions(+), 41 deletions(-) diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c index 11728a0..e69ca5ee1 100644 --- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c +++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c @@ -31,6 +31,7 @@ #include #include #include +#include #include "synaptics_i2c_rmi4.h" /* TODO: for multiple device support will need a per-device mutex */ @@ -67,7 +68,7 @@ #define PDT_START_SCAN_LOCATION (0x00E9) #define PDT_END_SCAN_LOCATION (0x000A) #define PDT_ENTRY_SIZE (0x0006) -#define RMI4_NUMBER_OF_MAX_FINGERS (8) +#define RMI4_NUMBER_OF_MAX_FINGERS (10) #define SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM (0x11) #define SYNAPTICS_RMI4_DEVICE_CONTROL_FUNC_NUM (0x01) @@ -164,6 +165,8 @@ struct synaptics_rmi4_device_info { * @regulator: pointer to the regulator structure * @wait: wait queue structure variable * @touch_stopped: flag to stop the thread function + * @finger_state: previous state of fingers + * @fingers_supported: maximum supported fingers * * This structure gives the device data information. */ @@ -184,6 +187,8 @@ struct synaptics_rmi4_data { struct regulator *regulator; wait_queue_head_t wait; bool touch_stopped; + unsigned char finger_state[RMI4_NUMBER_OF_MAX_FINGERS]; + unsigned char fingers_supported; }; /** @@ -303,7 +308,6 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, /* number of touch points - fingers down in this case */ int touch_count = 0; int finger; - int fingers_supported; int finger_registers; int reg; int finger_shift; @@ -314,10 +318,8 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, unsigned char data_reg_blk_size; unsigned char values[2]; unsigned char data[DATA_LEN]; - int x[RMI4_NUMBER_OF_MAX_FINGERS]; - int y[RMI4_NUMBER_OF_MAX_FINGERS]; - int wx[RMI4_NUMBER_OF_MAX_FINGERS]; - int wy[RMI4_NUMBER_OF_MAX_FINGERS]; + int x, y; + int wx, wy; struct i2c_client *client = pdata->i2c_client; /* get 2D sensor finger data */ @@ -333,8 +335,7 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, * 10 = finger present but data may not be accurate, * 11 = reserved for product use. */ - fingers_supported = rfi->num_of_data_points; - finger_registers = (fingers_supported + 3)/4; + finger_registers = (pdata->fingers_supported + 3)/4; data_base_addr = rfi->fn_desc.data_base_addr; retval = synaptics_rmi4_i2c_block_read(pdata, data_base_addr, values, finger_registers); @@ -348,17 +349,26 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, * to get absolute data. */ data_reg_blk_size = rfi->size_of_data_register_block; - for (finger = 0; finger < fingers_supported; finger++) { + for (finger = 0; finger < pdata->fingers_supported; finger++) { /* determine which data byte the finger status is in */ reg = finger/4; /* bit shift to get finger's status */ finger_shift = (finger % 4) * 2; - finger_status = (values[reg] >> finger_shift) & 3; + finger_status = (values[reg] >> finger_shift) & MASK_2BIT; /* * if finger status indicates a finger is present then * read the finger data and report it */ - if (finger_status == 1 || finger_status == 2) { + if (!finger_status && !pdata->finger_state[finger]) + continue; + + input_mt_slot(pdata->input_dev, finger); + input_mt_report_slot_state(pdata->input_dev, + MT_TOOL_FINGER, finger_status); + + if (!finger_status && pdata->finger_state[finger]) { + /* release event */ + } else { /* Read the finger data */ data_offset = data_base_addr + ((finger * data_reg_blk_size) + @@ -371,44 +381,30 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, __func__); return 0; } else { - x[touch_count] = - (data[0] << 4) | (data[2] & MASK_4BIT); - y[touch_count] = - (data[1] << 4) | - ((data[2] >> 4) & MASK_4BIT); - wy[touch_count] = - (data[3] >> 4) & MASK_4BIT; - wx[touch_count] = - (data[3] & MASK_4BIT); + x = (data[0] << 4) | (data[2] & MASK_4BIT); + y = (data[1] << 4) + | ((data[2] >> 4) & MASK_4BIT); + wy = (data[3] >> 4) & MASK_4BIT; + wx = (data[3] & MASK_4BIT); if (pdata->board->x_flip) - x[touch_count] = - pdata->sensor_max_x - - x[touch_count]; + x = pdata->sensor_max_x - x; if (pdata->board->y_flip) - y[touch_count] = - pdata->sensor_max_y - - y[touch_count]; + y = pdata->sensor_max_y - y; } + input_report_abs(pdata->input_dev, ABS_MT_TOUCH_MAJOR, + max(wx, wy)); + input_report_abs(pdata->input_dev, + ABS_MT_POSITION_X, x); + input_report_abs(pdata->input_dev, + ABS_MT_POSITION_Y, y); + /* number of active touch points */ touch_count++; } + pdata->finger_state[finger] = finger_status; } - /* report to input subsystem */ - if (touch_count) { - for (finger = 0; finger < touch_count; finger++) { - input_report_abs(pdata->input_dev, ABS_MT_TOUCH_MAJOR, - max(wx[finger] , wy[finger])); - input_report_abs(pdata->input_dev, ABS_MT_POSITION_X, - x[finger]); - input_report_abs(pdata->input_dev, ABS_MT_POSITION_Y, - y[finger]); - input_mt_sync(pdata->input_dev); - } - } else - input_mt_sync(pdata->input_dev); - /* sync after groups of events */ input_sync(pdata->input_dev); /* return the number of touch points */ @@ -575,6 +571,7 @@ static int synpatics_rmi4_touchpad_detect(struct synaptics_rmi4_data *pdata, if ((queries[1] & MASK_3BIT) == 5) rfi->num_of_data_points = 10; } + pdata->fingers_supported = rfi->num_of_data_points; /* Need to get interrupt info for handling interrupts */ rfi->index_to_intr_reg = (interruptcount + 7)/8; if (rfi->index_to_intr_reg != 0) @@ -981,13 +978,16 @@ static int __devinit synaptics_rmi4_probe set_bit(EV_SYN, rmi4_data->input_dev->evbit); set_bit(EV_KEY, rmi4_data->input_dev->evbit); set_bit(EV_ABS, rmi4_data->input_dev->evbit); - +#ifdef INPUT_PROP_DIRECT + set_bit(INPUT_PROP_DIRECT, rmi4_data->input_dev->propbit); +#endif input_set_abs_params(rmi4_data->input_dev, ABS_MT_POSITION_X, 0, rmi4_data->sensor_max_x, 0, 0); input_set_abs_params(rmi4_data->input_dev, ABS_MT_POSITION_Y, 0, rmi4_data->sensor_max_y, 0, 0); input_set_abs_params(rmi4_data->input_dev, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0); + input_mt_init_slots(rmi4_data->input_dev, rmi4_data->fingers_supported); /* Clear interrupts */ synaptics_rmi4_i2c_block_read(rmi4_data, -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/