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Commit 8e9285b0 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (nct6775) Detect and report additional temperature sources 



Scan all temperature sources used for fan control and report if additional
monitoring registers are available.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent bbd8decd

drivers/hwmon/nct6775.c

+33 −0
Original line number Diff line number Diff line
@@ -3364,6 +3364,32 @@ nct6775_check_fan_inputs(const struct nct6775_sio_data *sio_data, 
	return 0;

}



static void add_temp_sensors(struct nct6775_data *data, const u16 *regp,

			     int *available, int *mask)

{

	int i;

	u8 src;



	for (i = 0; i < data->pwm_num && *available; i++) {

		int index;



		if (!regp[i])

			continue;

		src = nct6775_read_value(data, regp[i]);

		src &= 0x1f;

		if (!src || (*mask & (1 << src)))

			continue;

		if (src >= data->temp_label_num ||

		    !strlen(data->temp_label[src]))

			continue;



		index = __ffs(*available);

		nct6775_write_value(data, data->REG_TEMP_SOURCE[index], src);

		*available &= ~(1 << index);

		*mask |= 1 << src;

	}

}



static int nct6775_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;
@@ -3614,6 +3640,13 @@ static int nct6775_probe(struct platform_device *pdev) 
		mask |= 1 << src;

	}



	/*

	 * Now find unmonitored temperature registers and enable monitoring

	 * if additional monitoring registers are available.

	 */

	add_temp_sensors(data, data->REG_TEMP_SEL, &available, &mask);

	add_temp_sensors(data, data->REG_WEIGHT_TEMP_SEL, &available, &mask);



	mask = 0;

	s = NUM_TEMP_FIXED;	/* First dynamic temperature attribute */

	for (i = 0; i < num_reg_temp; i++) {