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Commit 747a191f authored by Shantanu Jain's avatar Shantanu Jain Committed by Sudhakar Manapati
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input: touchscreen: Add firmware upgrade via sysfs entry 



Add sysfs entry for firmware upgrade support in Goodix
driver.

This patch is propagated from msm-3.10 kernel.
(commit: a8f22042f8816658cb8247c931c1725886350a8b
input: touchscreen: Add firmware upgrade via sysfs entry)

CRs-fixed: 575618
Change-Id: If71d4020223547e0db425c9fd37819c6166efcab
Signed-off-by: default avatarShantanu Jain <shjain@codeaurora.org>
parent 42ffbf9b

drivers/input/touchscreen/gt9xx/gt9xx.c

+66 −10
Original line number Diff line number Diff line
@@ -1527,12 +1527,63 @@ static ssize_t gtp_fw_name_store(struct device *dev, 
	return size;

}



static ssize_t gtp_fw_upgrade_show(struct device *dev,

				struct device_attribute *attr, char *buf)

{

	struct goodix_ts_data *ts = dev_get_drvdata(dev);



	return snprintf(buf, 2, "%d\n", ts->fw_loading);

}



static ssize_t gtp_fw_upgrade_store(struct device *dev,

				struct device_attribute *attr,

				const char *buf, size_t size)

{

	struct goodix_ts_data *ts = dev_get_drvdata(dev);

	unsigned long val;

	int ret;



	if (size > 2)

		return -EINVAL;



	ret = kstrtoul(buf, 10, &val);

	if (ret != 0)

		return ret;



	if (ts->gtp_is_suspend) {

		dev_err(&ts->client->dev,

			"Can't start fw upgrade. Device is in suspend state.");

		return -EBUSY;

	}



	mutex_lock(&ts->input_dev->mutex);

	if (!ts->fw_loading && val) {

		disable_irq(ts->client->irq);

		ts->fw_loading = true;

		if (config_enabled(CONFIG_GT9XX_TOUCHPANEL_UPDATE)) {

			ret = gup_update_proc(NULL);

			if (ret == FAIL)

				dev_err(&ts->client->dev,

						"Fail to update GTP firmware.\n");

		}

		ts->fw_loading = false;

		enable_irq(ts->client->irq);

	}

	mutex_unlock(&ts->input_dev->mutex);



	return size;

}



static DEVICE_ATTR(fw_name, (S_IRUGO | S_IWUSR | S_IWGRP),

			gtp_fw_name_show,

			gtp_fw_name_store);

static DEVICE_ATTR(fw_upgrade, (S_IRUGO | S_IWUSR | S_IWGRP),

			gtp_fw_upgrade_show,

			gtp_fw_upgrade_store);



static struct attribute *gtp_attrs[] = {

	&dev_attr_fw_name.attr,

	&dev_attr_fw_upgrade.attr,

	NULL

};
@@ -1865,9 +1916,7 @@ static int goodix_ts_probe(struct i2c_client *client, 
		return -EINVAL;

	}



#if GTP_ESD_PROTECT

	i2c_connect_client = client;

#endif



	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {

		dev_err(&client->dev, "GTP I2C not supported\n");
@@ -1919,15 +1968,14 @@ static int goodix_ts_probe(struct i2c_client *client, 
		strlcpy(ts->fw_name, pdata->fw_name,

						strlen(pdata->fw_name) + 1);



#ifdef CONFIG_GT9XX_TOUCHPANEL_UPDATE

	if (config_enabled(CONFIG_GT9XX_TOUCHPANEL_UPDATE)) {

		ret = gup_init_update_proc(ts);

		if (ret < 0) {

			dev_err(&client->dev,

					"GTP Create firmware update thread error.\n");

			goto exit_power_off;

		}

#endif



	}

	ret = gtp_init_panel(ts);

	if (ret < 0) {

		dev_err(&client->dev, "GTP init panel failed.\n");
@@ -2124,6 +2172,14 @@ static int goodix_ts_suspend(struct device *dev) 
	}



	mutex_lock(&ts->lock);



	if (ts->fw_loading) {

		dev_info(&ts->client->dev,

			"Fw upgrade in progress, can't go to suspend.");

		mutex_unlock(&ts->lock);

		return 0;

	}



#if GTP_ESD_PROTECT

	gtp_esd_switch(ts->client, SWITCH_OFF);

#endif

drivers/input/touchscreen/gt9xx/gt9xx.h

+2 −3
Original line number Diff line number Diff line
@@ -93,6 +93,7 @@ struct goodix_ts_data { 
	u8  fw_error;

	bool power_on;

	struct mutex lock;

	bool fw_loading;

	struct regulator *avdd;

	struct regulator *vdd;

	struct regulator *vcc_i2c;
@@ -218,11 +219,9 @@ s32 init_wr_node(struct i2c_client *client); 
void uninit_wr_node(void);

#endif



#ifdef CONFIG_GT9XX_TOUCHPANEL_UPDATE

extern u8 gup_init_update_proc(struct goodix_ts_data *ts);

u8 gup_init_update_proc(struct goodix_ts_data *ts);

s32 gup_enter_update_mode(struct i2c_client *client);

void gup_leave_update_mode(struct i2c_client *client);

s32 gup_update_proc(void *dir);

extern struct i2c_client  *i2c_connect_client;

#endif

#endif /* _GOODIX_GT9XX_H_ */