Merge "input: touchscreen: Add firmware upgrade via sysfs entry" (270c9d6d) · Commits · e / devices / android_kernel_sony_msm8994

drivers/input/touchscreen/gt9xx/gt9xx.c

+65 −10

Original line number	Diff line number	Diff line
		@@ -1531,12 +1531,62 @@ 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
		};

		@@ -1872,9 +1922,7 @@ 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");
		@@ -1928,15 +1976,14 @@ 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");
		@@ -2133,6 +2180,14 @@ 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_ */