Merge tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - new Socionext MN88443x ISDB-S/T demodulator driver: mn88443x

 - new sensor drivers: ak7375, ov2680 and rj54n1cb0c

 - an old soc-camera sensor driver converted to the V4L2 framework:
   mt9v111

 - a new Voice-Coil Motor (VCM) driver: dw9807-vcm

 - some cleanups at cx25821, removing legacy unused code

 - some improvements at ddbridge driver

 - new platform driver: vicodec

 - some DVB API cleanups, removing ioctls and compat code for old
   out-of-tree drivers that were never merged upstream

 - improvements at DVB core to support frontents that support both
   Satellite and non-satellite delivery systems

 - got rid of the unused VIDIOC_RESERVED V4L2 ioctl

 - some cleanups/improvements at gl861 ISDB driver

 - several improvements on ov772x, ov7670 and ov5640, imx274, ov5645,
   and smiapp sensor drivers

 - fixes at em28xx to support dual TS devices

 - some cleanups at V4L2/VB2 locking logic

 - some API improvements at media controller

 - some cec core and drivers improvements

 - some uvcvideo improvements

 - some improvements at platform drivers: stm32-dcmi, rcar-vin, coda,
   reneseas-ceu, imx, vsp1, venus, camss

 - lots of other cleanups and fixes

* tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (406 commits)
  Revert "media: vivid: shut up warnings due to a non-trivial logic"
  siano: get rid of an unused return code for debugfs register
  media: isp: fix a warning about a wrong struct initializer
  media: radio-wl1273: fix return code for the polling routine
  media: s3c-camif: fix return code for the polling routine
  media: saa7164: fix return codes for the polling routine
  media: exynos-gsc: fix return code if mutex was interrupted
  media: mt9v111: Fix build error with no VIDEO_V4L2_SUBDEV_API
  media: xc4000: get rid of uneeded casts
  media: drxj: get rid of uneeded casts
  media: tuner-xc2028: don't use casts for printing sizes
  media: cleanup fall-through comments
  media: vivid: shut up warnings due to a non-trivial logic
  media: rtl28xxu: be sure that it won't go past the array size
  media: mt9v111: avoid going past the buffer
  media: vsp1_dl: add a description for cmdpool field
  media: sta2x11: add a missing parameter description
  media: v4l2-mem2mem: add descriptions to MC fields
  media: i2c: fix warning in Aptina MT9V111
  media: imx: shut up a false positive warning
  ...

1 files changed, 81 insertions, 0 deletions

diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
index 0b347cc19aa5..06d29d8f6be8 100644
--- a/drivers/media/i2c/video-i2c.c
+++ b/drivers/media/i2c/video-i2c.c
@@ -10,6 +10,7 @@
 
 #include <linux/delay.h>
 #include <linux/freezer.h>
+#include <linux/hwmon.h>
 #include <linux/kthread.h>
 #include <linux/i2c.h>
 #include <linux/list.h>
@@ -77,6 +78,9 @@ struct video_i2c_chip {
 
 	/* xfer function */
 	int (*xfer)(struct video_i2c_data *data, char *buf);
+
+	/* hwmon init function */
+	int (*hwmon_init)(struct video_i2c_data *data);
 };
 
 static int amg88xx_xfer(struct video_i2c_data *data, char *buf)
@@ -101,6 +105,74 @@ static int amg88xx_xfer(struct video_i2c_data *data, char *buf)
 	return (ret == 2) ? 0 : -EIO;
 }
 
+#if IS_ENABLED(CONFIG_HWMON)
+
+static const u32 amg88xx_temp_config[] = {
+	HWMON_T_INPUT,
+	0
+};
+
+static const struct hwmon_channel_info amg88xx_temp = {
+	.type = hwmon_temp,
+	.config = amg88xx_temp_config,
+};
+
+static const struct hwmon_channel_info *amg88xx_info[] = {
+	&amg88xx_temp,
+	NULL
+};
+
+static umode_t amg88xx_is_visible(const void *drvdata,
+				  enum hwmon_sensor_types type,
+				  u32 attr, int channel)
+{
+	return 0444;
+}
+
+static int amg88xx_read(struct device *dev, enum hwmon_sensor_types type,
+			u32 attr, int channel, long *val)
+{
+	struct video_i2c_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	int tmp = i2c_smbus_read_word_data(client, 0x0e);
+
+	if (tmp < 0)
+		return tmp;
+
+	/*
+	 * Check for sign bit, this isn't a two's complement value but an
+	 * absolute temperature that needs to be inverted in the case of being
+	 * negative.
+	 */
+	if (tmp & BIT(11))
+		tmp = -(tmp & 0x7ff);
+
+	*val = (tmp * 625) / 10;
+
+	return 0;
+}
+
+static const struct hwmon_ops amg88xx_hwmon_ops = {
+	.is_visible = amg88xx_is_visible,
+	.read = amg88xx_read,
+};
+
+static const struct hwmon_chip_info amg88xx_chip_info = {
+	.ops = &amg88xx_hwmon_ops,
+	.info = amg88xx_info,
+};
+
+static int amg88xx_hwmon_init(struct video_i2c_data *data)
+{
+	void *hwmon = devm_hwmon_device_register_with_info(&data->client->dev,
+				"amg88xx", data, &amg88xx_chip_info, NULL);
+
+	return PTR_ERR_OR_ZERO(hwmon);
+}
+#else
+#define	amg88xx_hwmon_init	NULL
+#endif
+
 #define AMG88XX		0
 
 static const struct video_i2c_chip video_i2c_chip[] = {
@@ -111,6 +183,7 @@ static const struct video_i2c_chip video_i2c_chip[] = {
 		.buffer_size	= 128,
 		.bpp		= 16,
 		.xfer		= &amg88xx_xfer,
+		.hwmon_init	= amg88xx_hwmon_init,
 	},
 };
 
@@ -505,6 +578,14 @@ static int video_i2c_probe(struct i2c_client *client,
 	video_set_drvdata(&data->vdev, data);
 	i2c_set_clientdata(client, data);
 
+	if (data->chip->hwmon_init) {
+		ret = data->chip->hwmon_init(data);
+		if (ret < 0) {
+			dev_warn(&client->dev,
+				 "failed to register hwmon device\n");
+		}
+	}
+
 	ret = video_register_device(&data->vdev, VFL_TYPE_GRABBER, -1);
 	if (ret < 0)
 		goto error_unregister_device;