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Commit d2845577 authored by Sarada Prasanna Garnayak's avatar Sarada Prasanna Garnayak
Browse files

input: synaptic_dsx: add sysfs entry for force firmware update 



firmware update method compare the version id and package id
the of new firmware with the existing firmware of the touch controller.
if the version id of the new firmware is older than the existing firmware
it will skip the firmware update. sometime to measure the touch performance
difference between the new firmware and old firmware we need to update
old firmware in touch controller. So this sysfs entry bypass the firmware
header check before the firmware update and allow the driver to update
the old firmware in the touch controller.

Change-Id: Ib4f5b75940c54c4d04ac1701d387d59f50eb3a71
Signed-off-by: default avatarSarada Prasanna Garnayak <c_sgarna@codeaurora.org>
parent 4ce052c2

drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_fw_update.c

100755 → 100644
+61 −4
Original line number Diff line number Diff line
@@ -98,6 +98,9 @@ static ssize_t fwu_sysfs_store_image(struct file *data_file, 
		struct kobject *kobj, struct bin_attribute *attributes,

		char *buf, loff_t pos, size_t count);



static ssize_t fwu_sysfs_force_reflash_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count);



static ssize_t fwu_sysfs_do_reflash_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count);
@@ -110,6 +113,9 @@ static ssize_t fwu_sysfs_read_config_store(struct device *dev, 
static ssize_t fwu_sysfs_config_area_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count);



static ssize_t fwu_sysfs_image_name_show(struct device *dev,

		struct device_attribute *attr, char *buf);



static ssize_t fwu_sysfs_image_name_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count);
@@ -288,8 +294,11 @@ static struct bin_attribute dev_attr_data = { 




static struct device_attribute attrs[] = {

	__ATTR(doreflash, S_IWUGO,

			synaptics_rmi4_show_error,

	__ATTR(force_update_fw, S_IWUSR | S_IWGRP,

			NULL,

			fwu_sysfs_force_reflash_store),

	__ATTR(update_fw, S_IWUSR | S_IWGRP,

			NULL,

			fwu_sysfs_do_reflash_store),

	__ATTR(writeconfig, S_IWUGO,

			synaptics_rmi4_show_error,
@@ -300,8 +309,8 @@ static struct device_attribute attrs[] = { 
	__ATTR(configarea, S_IWUGO,

			synaptics_rmi4_show_error,

			fwu_sysfs_config_area_store),

	__ATTR(fw_name, S_IWUGO,

			synaptics_rmi4_show_error,

	__ATTR(fw_name, S_IRUGO | S_IWUSR | S_IWGRP,

			fwu_sysfs_image_name_show,

			fwu_sysfs_image_name_store),

	__ATTR(imagesize, S_IWUGO,

			synaptics_rmi4_show_error,
@@ -1481,6 +1490,44 @@ static ssize_t fwu_sysfs_store_image(struct file *data_file, 
	return count;

}



static ssize_t fwu_sysfs_force_reflash_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{

	int retval;

	unsigned int input;

	struct synaptics_rmi4_data *rmi4_data = fwu->rmi4_data;



	if (sscanf(buf, "%u", &input) != 1) {

		retval = -EINVAL;

		goto exit;

	}



	if (input != 1) {

		retval = -EINVAL;

		goto exit;

	}



	if (LOCKDOWN)

		fwu->do_lockdown = true;



	fwu->force_update = true;

	retval = synaptics_dsx_fw_updater(fwu->ext_data_source);

	if (retval < 0) {

		dev_err(rmi4_data->pdev->dev.parent,

				"%s: Failed to do reflash\n",

				__func__);

		goto exit;

	}



	retval = count;

exit:

	kfree(fwu->ext_data_source);

	fwu->ext_data_source = NULL;

	fwu->force_update = FORCE_UPDATE;

	fwu->do_lockdown = DO_LOCKDOWN;

	return retval;

}



static ssize_t fwu_sysfs_do_reflash_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1596,6 +1643,16 @@ static ssize_t fwu_sysfs_config_area_store(struct device *dev, 
	return count;

}



static ssize_t fwu_sysfs_image_name_show(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	if (strnlen(fwu->rmi4_data->fw_name, SYNA_FW_NAME_MAX_LEN) > 0)

		return snprintf(buf, PAGE_SIZE, "%s\n",

					fwu->rmi4_data->fw_name);

	else

		return snprintf(buf, PAGE_SIZE, "No firmware name given\n");

}



static ssize_t fwu_sysfs_image_name_store(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{