From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753304Ab2KMMMS (ORCPT ); Tue, 13 Nov 2012 07:12:18 -0500 Received: from us-mx3.synaptics.com ([12.239.217.85]:8069 "EHLO us-mx3.synaptics.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751749Ab2KMMMQ (ORCPT ); Tue, 13 Nov 2012 07:12:16 -0500 Date: Tue, 13 Nov 2012 20:12:12 +0800 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 v6] staging: ste_rmi4: Convert to Type-B support Message-ID: <20121113201212.8550fb074e1f7cce78f29d97@tw.synaptics.com> In-Reply-To: <20121103013623.0f3a1b28168a9a42881b0b00@tw.synaptics.com> References: <20121103013623.0f3a1b28168a9a42881b0b00@tw.synaptics.com> X-Mailer: Sylpheed 3.2.0beta3 (GTK+ 2.24.6; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Convert to MT-B because Synaptics touch devices are capable of tracking identifiable fingers. Signed-off-by: Alexandra Chin --- This patch was tested on Pandaboard. Changes from v6: - Incorporated Henrik's review comments *remove irrelevant changes within the patch Changes from v5: - Incorporated Henrik's review comments *rollback to v3 from v4 *fix odd line break in v3 Changes from v4: - Incorporated Henrik's review comments *split function synpatics_rmi4_touchscreen_report *split function synaptics_rmi4_i2c_query_device Changes from v3: - Incorporated Henrik's review comments *remove 'else' after an error path return *add input_mt_sync_frame() for pointer emulation effects *correct names of touchscreen - Replace printk with dev_err Changes from v2: - Incorporated Henrik's review comments *directly report finger state with Type-B - Against 3.7-rcX *call input_mt_init_slots with INPUT_MT_DIRECT flag --- drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c | 76 +++++++++++-------------- 1 files changed, 33 insertions(+), 43 deletions(-) diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c index 277491a..ed304e0 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 +68,6 @@ #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 SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM (0x11) #define SYNAPTICS_RMI4_DEVICE_CONTROL_FUNC_NUM (0x01) @@ -164,6 +164,7 @@ struct synaptics_rmi4_device_info { * @regulator: pointer to the regulator structure * @wait: wait queue structure variable * @touch_stopped: flag to stop the thread function + * @fingers_supported: maximum supported fingers * * This structure gives the device data information. */ @@ -184,6 +185,7 @@ struct synaptics_rmi4_data { struct regulator *regulator; wait_queue_head_t wait; bool touch_stopped; + unsigned char fingers_supported; }; /** @@ -303,22 +305,21 @@ 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; int finger_status; int retval; + int x, y; + int wx, wy; unsigned short data_base_addr; unsigned short data_offset; 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]; + unsigned char fingers_supported = pdata->fingers_supported; struct i2c_client *client = pdata->i2c_client; + struct input_dev *input_dev = pdata->input_dev; /* get 2D sensor finger data */ /* @@ -333,7 +334,6 @@ 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; data_base_addr = rfi->fn_desc.data_base_addr; retval = synaptics_rmi4_i2c_block_read(pdata, data_base_addr, values, @@ -358,7 +358,11 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, * if finger status indicates a finger is present then * read the finger data and report it */ - if (finger_status == 1 || finger_status == 2) { + input_mt_slot(input_dev, finger); + input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, + finger_status != 0); + + if (finger_status) { /* Read the finger data */ data_offset = data_base_addr + ((finger * data_reg_blk_size) + @@ -367,50 +371,33 @@ static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, data_offset, data, data_reg_blk_size); if (retval != data_reg_blk_size) { - printk(KERN_ERR "%s:read data failed\n", + dev_err(&client->dev, "%s:read data failed\n", __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); - - if (pdata->board->x_flip) - x[touch_count] = - pdata->sensor_max_x - - x[touch_count]; - if (pdata->board->y_flip) - y[touch_count] = - pdata->sensor_max_y - - y[touch_count]; } + 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 = pdata->sensor_max_x - x; + if (pdata->board->y_flip) + y = pdata->sensor_max_y - y; + + input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, + max(wx, wy)); + input_report_abs(input_dev, ABS_MT_POSITION_X, x); + input_report_abs(input_dev, ABS_MT_POSITION_Y, y); + /* number of active touch points */ touch_count++; } } - /* 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); + input_mt_sync_frame(input_dev); + input_sync(input_dev); /* return the number of touch points */ return touch_count; } @@ -575,6 +562,7 @@ 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) @@ -988,6 +976,8 @@ static int __devinit synaptics_rmi4_probe 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, 0); /* Clear interrupts */ synaptics_rmi4_i2c_block_read(rmi4_data, -- 1.7.5.4