Hi Alexandra, Thanks for making changes.
> This patch converts to MT-B because Synaptics touch devices are > capable of tracking identifiable fingers > > This patch was tested on pandaboard, except input_mt_sync_frame(), > which is a quite new function. I am not sure how to interpret this. Is the patch untested, or tested on something different from a pandaboard? > I changed to use sylpheed as my mail client. Please let me know > if there is any problem. > Greatly appreciate your time. As mentioned, the commit message of the patch should not contain mail conversation. > drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c | 122 > ++++++++++++------------- > 1 files changed, 57 insertions(+), 65 deletions(-) > > diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c > b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c > index 277491a..7876f6b 100644 > --- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c > +++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c > @@ -1,7 +1,7 @@ > /** > * > - * Synaptics Register Mapped Interface (RMI4) I2C Physical Layer Driver. > - * Copyright (c) 2007-2010, Synaptics Incorporated > + * Synaptics Register Mapped Interface (RMI4) I2C Touchscreen Driver. > + * Copyright (c) 2007-2012, Synaptics Incorporated > * > * Author: Js HA <[email protected]> for ST-Ericsson > * Author: Naveen Kumar G <[email protected]> for ST-Ericsson > @@ -31,6 +31,7 @@ > #include <linux/interrupt.h> > #include <linux/regulator/consumer.h> > #include <linux/module.h> > +#include <linux/input/mt.h> > #include "synaptics_i2c_rmi4.h" > > /* TODO: for multiple device support will need a per-device mutex */ > @@ -63,12 +64,11 @@ > #define MASK_4BIT 0x0F > #define MASK_3BIT 0x07 > #define MASK_2BIT 0x03 > -#define TOUCHPAD_CTRL_INTR 0x8 > +#define TOUCHSCREEN_CTRL_INTR 0x8 > #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_TOUCHSCREEN_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; > }; > > /** > @@ -291,34 +293,33 @@ exit: > } > > /** > - * synpatics_rmi4_touchpad_report() - reports for the rmi4 touchpad device > + * synpatics_rmi4_touchscreen_report() - reports for the rmi4 touchscreen > device > * @pdata: pointer to synaptics_rmi4_data structure > * @rfi: pointer to synaptics_rmi4_fn structure > * > - * This function calls to reports for the rmi4 touchpad device > + * This function calls to reports for the rmi4 touchscreen device > */ > -static int synpatics_rmi4_touchpad_report(struct synaptics_rmi4_data *pdata, > +static int synpatics_rmi4_touchscreen_report(struct synaptics_rmi4_data > *pdata, > struct synaptics_rmi4_fn *rfi) > { > /* 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; The patch is definitely an improvement over the existing code, but I would very much recommend a follow-up patch which splits this function. > > /* 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, > @@ -353,12 +353,16 @@ static int synpatics_rmi4_touchpad_report(struct > synaptics_rmi4_data *pdata, > 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) { > + 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; > } > @@ -428,13 +415,13 @@ static int synaptics_rmi4_report_device(struct > synaptics_rmi4_data *pdata, > int touch = 0; > struct i2c_client *client = pdata->i2c_client; > static int num_error_reports; > - if (rfi->fn_number != SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM) { > + if (rfi->fn_number != SYNAPTICS_RMI4_TOUCHSCREEN_FUNC_NUM) { > num_error_reports++; > if (num_error_reports < MAX_ERROR_REPORT) > dev_err(&client->dev, "%s:report not supported\n", > __func__); > } else > - touch = synpatics_rmi4_touchpad_report(pdata, rfi); > + touch = synpatics_rmi4_touchscreen_report(pdata, rfi); > return touch; > } > /** > @@ -510,15 +497,15 @@ static irqreturn_t synaptics_rmi4_irq(int irq, void > *data) > } > > /** > - * synpatics_rmi4_touchpad_detect() - detects the rmi4 touchpad device > + * synpatics_rmi4_touchscreen_detect() - detects the rmi4 touchscreen device > * @pdata: pointer to synaptics_rmi4_data structure > * @rfi: pointer to synaptics_rmi4_fn structure > * @fd: pointer to synaptics_rmi4_fn_desc structure > * @interruptcount: count the number of interrupts > * > - * This function calls to detects the rmi4 touchpad device > + * This function calls to detects the rmi4 touchscreen device > */ > -static int synpatics_rmi4_touchpad_detect(struct synaptics_rmi4_data *pdata, > +static int synpatics_rmi4_touchscreen_detect(struct synaptics_rmi4_data > *pdata, > struct synaptics_rmi4_fn *rfi, > struct synaptics_rmi4_fn_desc *fd, > unsigned int interruptcount) > @@ -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) > @@ -655,13 +643,13 @@ static int synpatics_rmi4_touchpad_detect(struct > synaptics_rmi4_data *pdata, > } > > /** > - * synaptics_rmi4_touchpad_config() - configures the rmi4 touchpad device > + * synaptics_rmi4_touchscreen_config() - configures the rmi4 touchscreen > device > * @pdata: pointer to synaptics_rmi4_data structure > * @rfi: pointer to synaptics_rmi4_fn structure > * > - * This function calls to configures the rmi4 touchpad device > + * This function calls to configures the rmi4 touchscreen device > */ > -int synaptics_rmi4_touchpad_config(struct synaptics_rmi4_data *pdata, > +int synaptics_rmi4_touchscreen_config(struct synaptics_rmi4_data *pdata, > struct synaptics_rmi4_fn *rfi) > { > /* > @@ -751,7 +739,7 @@ static int synaptics_rmi4_i2c_query_device(struct > synaptics_rmi4_data *pdata) > pdata->fn01_data_base_addr = > rmi_fd.data_base_addr; > break; > - case SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM: > + case SYNAPTICS_RMI4_TOUCHSCREEN_FUNC_NUM: > if (rmi_fd.intr_src_count) { > rfi = kmalloc(sizeof(*rfi), > GFP_KERNEL); > @@ -761,7 +749,8 @@ static int synaptics_rmi4_i2c_query_device(struct > synaptics_rmi4_data *pdata) > __func__); > return -ENOMEM; > } > - retval = synpatics_rmi4_touchpad_detect > + retval = > + synpatics_rmi4_touchscreen_detect > (pdata, rfi, > &rmi_fd, > intr_count); Odd line break is a clear sign that something could be broken out into its own function. > @@ -854,8 +843,9 @@ static int synaptics_rmi4_i2c_query_device(struct > synaptics_rmi4_data *pdata) > list_for_each_entry(rfi, &rmi->support_fn_list, link) { > if (rfi->num_of_data_sources) { > if (rfi->fn_number == > - SYNAPTICS_RMI4_TOUCHPAD_FUNC_NUM) { > - retval = synaptics_rmi4_touchpad_config > + SYNAPTICS_RMI4_TOUCHSCREEN_FUNC_NUM) { > + retval = > + synaptics_rmi4_touchscreen_config > (pdata, rfi); > if (retval < 0) > return retval; Same here. > @@ -988,6 +978,8 @@ 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, INPUT_MT_DIRECT); > > /* Clear interrupts */ > synaptics_rmi4_i2c_block_read(rmi4_data, > @@ -1076,7 +1068,7 @@ static int synaptics_rmi4_suspend(struct device *dev) > > retval = synaptics_rmi4_i2c_byte_write(rmi4_data, > rmi4_data->fn01_ctrl_base_addr + 1, > - (intr_status & ~TOUCHPAD_CTRL_INTR)); > + (intr_status & ~TOUCHSCREEN_CTRL_INTR)); > if (retval < 0) > return retval; > > @@ -1112,7 +1104,7 @@ static int synaptics_rmi4_resume(struct device *dev) > > retval = synaptics_rmi4_i2c_byte_write(rmi4_data, > rmi4_data->fn01_ctrl_base_addr + 1, > - (intr_status | TOUCHPAD_CTRL_INTR)); > + (intr_status | TOUCHSCREEN_CTRL_INTR)); > if (retval < 0) > return retval; > > -- > 1.7.5.4 > Ok, with a final polish and a proper commit message, this looks like it will work. Thanks, Henrik -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
