1 files changed, 58 insertions, 91 deletions

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 7fc70af53e45..162b49046990 100644
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -2,11 +2,13 @@
 // Copyright (c) 2017 Intel Corporation.
 
 #include <linux/acpi.h>
+#include <linux/clk.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
 #include <media/v4l2-fwnode.h>
 
 #define OV13858_REG_VALUE_08BIT		1
@@ -1027,6 +1029,9 @@ static const struct ov13858_mode supported_modes[] = {
 };
 
 struct ov13858 {
+	struct device *dev;
+	struct clk *clk;
+
 	struct v4l2_subdev sd;
 	struct media_pad pad;
 
@@ -1043,9 +1048,6 @@ struct ov13858 {
 
 	/* Mutex for serialized access */
 	struct mutex mutex;
-
-	/* Streaming on/off */
-	bool streaming;
 };
 
 #define to_ov13858(_sd)	container_of(_sd, struct ov13858, sd)
@@ -1119,7 +1121,6 @@ static int ov13858_write_reg(struct ov13858 *ov13858, u16 reg, u32 len,
 static int ov13858_write_regs(struct ov13858 *ov13858,
 			      const struct ov13858_reg *regs, u32 len)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&ov13858->sd);
 	int ret;
 	u32 i;
 
@@ -1128,7 +1129,7 @@ static int ov13858_write_regs(struct ov13858 *ov13858,
 					regs[i].val);
 		if (ret) {
 			dev_err_ratelimited(
-				&client->dev,
+				ov13858->dev,
 				"Failed to write reg 0x%4.4x. error = %d\n",
 				regs[i].address, ret);
 
@@ -1149,9 +1150,8 @@ static int ov13858_write_reg_list(struct ov13858 *ov13858,
 static int ov13858_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 {
 	struct ov13858 *ov13858 = to_ov13858(sd);
-	struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd,
-									fh->state,
-									0);
+	struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_state_get_format(fh->state,
+									  0);
 
 	mutex_lock(&ov13858->mutex);
 
@@ -1212,7 +1212,6 @@ static int ov13858_set_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct ov13858 *ov13858 = container_of(ctrl->handler,
 					       struct ov13858, ctrl_handler);
-	struct i2c_client *client = v4l2_get_subdevdata(&ov13858->sd);
 	s64 max;
 	int ret;
 
@@ -1231,7 +1230,7 @@ static int ov13858_set_ctrl(struct v4l2_ctrl *ctrl)
 	 * Applying V4L2 control value only happens
 	 * when power is up for streaming
 	 */
-	if (!pm_runtime_get_if_in_use(&client->dev))
+	if (!pm_runtime_get_if_in_use(ov13858->dev))
 		return 0;
 
 	ret = 0;
@@ -1259,13 +1258,13 @@ static int ov13858_set_ctrl(struct v4l2_ctrl *ctrl)
 		ret = ov13858_enable_test_pattern(ov13858, ctrl->val);
 		break;
 	default:
-		dev_info(&client->dev,
+		dev_info(ov13858->dev,
 			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
 			 ctrl->id, ctrl->val);
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	pm_runtime_put(ov13858->dev);
 
 	return ret;
 }
@@ -1319,10 +1318,9 @@ static int ov13858_do_get_pad_format(struct ov13858 *ov13858,
 				     struct v4l2_subdev_format *fmt)
 {
 	struct v4l2_mbus_framefmt *framefmt;
-	struct v4l2_subdev *sd = &ov13858->sd;
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
-		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+		framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
 		fmt->format = *framefmt;
 	} else {
 		ov13858_update_pad_format(ov13858->cur_mode, fmt);
@@ -1371,7 +1369,7 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
 				      fmt->format.width, fmt->format.height);
 	ov13858_update_pad_format(mode, fmt);
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
-		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+		framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
 		*framefmt = fmt->format;
 	} else {
 		ov13858->cur_mode = mode;
@@ -1412,7 +1410,6 @@ static int ov13858_get_skip_frames(struct v4l2_subdev *sd, u32 *frames)
 /* Start streaming */
 static int ov13858_start_streaming(struct ov13858 *ov13858)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&ov13858->sd);
 	const struct ov13858_reg_list *reg_list;
 	int ret, link_freq_index;
 
@@ -1420,7 +1417,7 @@ static int ov13858_start_streaming(struct ov13858 *ov13858)
 	ret = ov13858_write_reg(ov13858, OV13858_REG_SOFTWARE_RST,
 				OV13858_REG_VALUE_08BIT, OV13858_SOFTWARE_RST);
 	if (ret) {
-		dev_err(&client->dev, "%s failed to set powerup registers\n",
+		dev_err(ov13858->dev, "%s failed to set powerup registers\n",
 			__func__);
 		return ret;
 	}
@@ -1430,7 +1427,7 @@ static int ov13858_start_streaming(struct ov13858 *ov13858)
 	reg_list = &link_freq_configs[link_freq_index].reg_list;
 	ret = ov13858_write_reg_list(ov13858, reg_list);
 	if (ret) {
-		dev_err(&client->dev, "%s failed to set plls\n", __func__);
+		dev_err(ov13858->dev, "%s failed to set plls\n", __func__);
 		return ret;
 	}
 
@@ -1438,7 +1435,7 @@ static int ov13858_start_streaming(struct ov13858 *ov13858)
 	reg_list = &ov13858->cur_mode->reg_list;
 	ret = ov13858_write_reg_list(ov13858, reg_list);
 	if (ret) {
-		dev_err(&client->dev, "%s failed to set mode\n", __func__);
+		dev_err(ov13858->dev, "%s failed to set mode\n", __func__);
 		return ret;
 	}
 
@@ -1462,17 +1459,12 @@ static int ov13858_stop_streaming(struct ov13858 *ov13858)
 static int ov13858_set_stream(struct v4l2_subdev *sd, int enable)
 {
 	struct ov13858 *ov13858 = to_ov13858(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	int ret = 0;
 
 	mutex_lock(&ov13858->mutex);
-	if (ov13858->streaming == enable) {
-		mutex_unlock(&ov13858->mutex);
-		return 0;
-	}
 
 	if (enable) {
-		ret = pm_runtime_resume_and_get(&client->dev);
+		ret = pm_runtime_resume_and_get(ov13858->dev);
 		if (ret < 0)
 			goto err_unlock;
 
@@ -1485,57 +1477,24 @@ static int ov13858_set_stream(struct v4l2_subdev *sd, int enable)
 			goto err_rpm_put;
 	} else {
 		ov13858_stop_streaming(ov13858);
-		pm_runtime_put(&client->dev);
+		pm_runtime_put(ov13858->dev);
 	}
 
-	ov13858->streaming = enable;
 	mutex_unlock(&ov13858->mutex);
 
 	return ret;
 
 err_rpm_put:
-	pm_runtime_put(&client->dev);
+	pm_runtime_put(ov13858->dev);
 err_unlock:
 	mutex_unlock(&ov13858->mutex);
 
 	return ret;
 }
 
-static int __maybe_unused ov13858_suspend(struct device *dev)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	struct ov13858 *ov13858 = to_ov13858(sd);
-
-	if (ov13858->streaming)
-		ov13858_stop_streaming(ov13858);
-
-	return 0;
-}
-
-static int __maybe_unused ov13858_resume(struct device *dev)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	struct ov13858 *ov13858 = to_ov13858(sd);
-	int ret;
-
-	if (ov13858->streaming) {
-		ret = ov13858_start_streaming(ov13858);
-		if (ret)
-			goto error;
-	}
-
-	return 0;
-
-error:
-	ov13858_stop_streaming(ov13858);
-	ov13858->streaming = false;
-	return ret;
-}
-
 /* Verify chip ID */
 static int ov13858_identify_module(struct ov13858 *ov13858)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&ov13858->sd);
 	int ret;
 	u32 val;
 
@@ -1545,7 +1504,7 @@ static int ov13858_identify_module(struct ov13858 *ov13858)
 		return ret;
 
 	if (val != OV13858_CHIP_ID) {
-		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+		dev_err(ov13858->dev, "chip id mismatch: %x!=%x\n",
 			OV13858_CHIP_ID, val);
 		return -EIO;
 	}
@@ -1553,6 +1512,12 @@ static int ov13858_identify_module(struct ov13858 *ov13858)
 	return 0;
 }
 
+static const struct v4l2_subdev_core_ops ov13858_core_ops = {
+	.log_status = v4l2_ctrl_subdev_log_status,
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
 static const struct v4l2_subdev_video_ops ov13858_video_ops = {
 	.s_stream = ov13858_set_stream,
 };
@@ -1569,6 +1534,7 @@ static const struct v4l2_subdev_sensor_ops ov13858_sensor_ops = {
 };
 
 static const struct v4l2_subdev_ops ov13858_subdev_ops = {
+	.core = &ov13858_core_ops,
 	.video = &ov13858_video_ops,
 	.pad = &ov13858_pad_ops,
 	.sensor = &ov13858_sensor_ops,
@@ -1585,7 +1551,6 @@ static const struct v4l2_subdev_internal_ops ov13858_internal_ops = {
 /* Initialize control handlers */
 static int ov13858_init_controls(struct ov13858 *ov13858)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&ov13858->sd);
 	struct v4l2_fwnode_device_properties props;
 	struct v4l2_ctrl_handler *ctrl_hdlr;
 	s64 exposure_max;
@@ -1659,12 +1624,12 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
 				     0, 0, ov13858_test_pattern_menu);
 	if (ctrl_hdlr->error) {
 		ret = ctrl_hdlr->error;
-		dev_err(&client->dev, "%s control init failed (%d)\n",
+		dev_err(ov13858->dev, "%s control init failed (%d)\n",
 			__func__, ret);
 		goto error;
 	}
 
-	ret = v4l2_fwnode_device_parse(&client->dev, &props);
+	ret = v4l2_fwnode_device_parse(ov13858->dev, &props);
 	if (ret)
 		goto error;
 
@@ -1690,28 +1655,36 @@ static void ov13858_free_controls(struct ov13858 *ov13858)
 	mutex_destroy(&ov13858->mutex);
 }
 
-static int ov13858_probe(struct i2c_client *client,
-			 const struct i2c_device_id *devid)
+static int ov13858_probe(struct i2c_client *client)
 {
 	struct ov13858 *ov13858;
+	unsigned long freq;
 	int ret;
-	u32 val = 0;
-
-	device_property_read_u32(&client->dev, "clock-frequency", &val);
-	if (val != 19200000)
-		return -EINVAL;
 
 	ov13858 = devm_kzalloc(&client->dev, sizeof(*ov13858), GFP_KERNEL);
 	if (!ov13858)
 		return -ENOMEM;
 
+	ov13858->dev = &client->dev;
+
+	ov13858->clk = devm_v4l2_sensor_clk_get(ov13858->dev, NULL);
+	if (IS_ERR(ov13858->clk))
+		return dev_err_probe(ov13858->dev, PTR_ERR(ov13858->clk),
+				     "failed to get clock\n");
+
+	freq = clk_get_rate(ov13858->clk);
+	if (freq != 19200000)
+		return dev_err_probe(ov13858->dev, -EINVAL,
+				     "external clock %lu is not supported\n",
+				     freq);
+
 	/* Initialize subdev */
 	v4l2_i2c_subdev_init(&ov13858->sd, client, &ov13858_subdev_ops);
 
 	/* Check module identity */
 	ret = ov13858_identify_module(ov13858);
 	if (ret) {
-		dev_err(&client->dev, "failed to find sensor: %d\n", ret);
+		dev_err(ov13858->dev, "failed to find sensor: %d\n", ret);
 		return ret;
 	}
 
@@ -1724,7 +1697,8 @@ static int ov13858_probe(struct i2c_client *client,
 
 	/* Initialize subdev */
 	ov13858->sd.internal_ops = &ov13858_internal_ops;
-	ov13858->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	ov13858->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+			     V4L2_SUBDEV_FL_HAS_EVENTS;
 	ov13858->sd.entity.ops = &ov13858_subdev_entity_ops;
 	ov13858->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
 
@@ -1732,7 +1706,7 @@ static int ov13858_probe(struct i2c_client *client,
 	ov13858->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ret = media_entity_pads_init(&ov13858->sd.entity, 1, &ov13858->pad);
 	if (ret) {
-		dev_err(&client->dev, "%s failed:%d\n", __func__, ret);
+		dev_err(ov13858->dev, "%s failed:%d\n", __func__, ret);
 		goto error_handler_free;
 	}
 
@@ -1744,9 +1718,9 @@ static int ov13858_probe(struct i2c_client *client,
 	 * Device is already turned on by i2c-core with ACPI domain PM.
 	 * Enable runtime PM and turn off the device.
 	 */
-	pm_runtime_set_active(&client->dev);
-	pm_runtime_enable(&client->dev);
-	pm_runtime_idle(&client->dev);
+	pm_runtime_set_active(ov13858->dev);
+	pm_runtime_enable(ov13858->dev);
+	pm_runtime_idle(ov13858->dev);
 
 	return 0;
 
@@ -1755,12 +1729,12 @@ error_media_entity:
 
 error_handler_free:
 	ov13858_free_controls(ov13858);
-	dev_err(&client->dev, "%s failed:%d\n", __func__, ret);
+	dev_err(ov13858->dev, "%s failed:%d\n", __func__, ret);
 
 	return ret;
 }
 
-static int ov13858_remove(struct i2c_client *client)
+static void ov13858_remove(struct i2c_client *client)
 {
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 	struct ov13858 *ov13858 = to_ov13858(sd);
@@ -1769,22 +1743,16 @@ static int ov13858_remove(struct i2c_client *client)
 	media_entity_cleanup(&sd->entity);
 	ov13858_free_controls(ov13858);
 
-	pm_runtime_disable(&client->dev);
-
-	return 0;
+	pm_runtime_disable(ov13858->dev);
 }
 
 static const struct i2c_device_id ov13858_id_table[] = {
-	{"ov13858", 0},
-	{},
+	{ "ov13858" },
+	{}
 };
 
 MODULE_DEVICE_TABLE(i2c, ov13858_id_table);
 
-static const struct dev_pm_ops ov13858_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(ov13858_suspend, ov13858_resume)
-};
-
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id ov13858_acpi_ids[] = {
 	{"OVTID858"},
@@ -1797,7 +1765,6 @@ MODULE_DEVICE_TABLE(acpi, ov13858_acpi_ids);
 static struct i2c_driver ov13858_i2c_driver = {
 	.driver = {
 		.name = "ov13858",
-		.pm = &ov13858_pm_ops,
 		.acpi_match_table = ACPI_PTR(ov13858_acpi_ids),
 	},
 	.probe = ov13858_probe,
@@ -1808,7 +1775,7 @@ static struct i2c_driver ov13858_i2c_driver = {
 module_i2c_driver(ov13858_i2c_driver);
 
 MODULE_AUTHOR("Kan, Chris <chris.kan@intel.com>");
-MODULE_AUTHOR("Rapolu, Chiranjeevi <chiranjeevi.rapolu@intel.com>");
-MODULE_AUTHOR("Yang, Hyungwoo <hyungwoo.yang@intel.com>");
+MODULE_AUTHOR("Rapolu, Chiranjeevi");
+MODULE_AUTHOR("Yang, Hyungwoo");
 MODULE_DESCRIPTION("Omnivision ov13858 sensor driver");
 MODULE_LICENSE("GPL v2");