1 files changed, 48 insertions, 102 deletions

diff --git a/drivers/media/i2c/hi847.c b/drivers/media/i2c/hi847.c
index 7cdce392e137..def01aa07b2f 100644
--- a/drivers/media/i2c/hi847.c
+++ b/drivers/media/i2c/hi847.c
@@ -1,12 +1,14 @@
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (c) 2022 Intel Corporation.
 
-#include <asm/unaligned.h>
 #include <linux/acpi.h>
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
+#include <linux/unaligned.h>
+
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-fwnode.h>
@@ -2166,6 +2168,9 @@ static const struct hi847_mode supported_modes[] = {
 };
 
 struct hi847 {
+	struct device *dev;
+	struct clk *clk;
+
 	struct v4l2_subdev sd;
 	struct media_pad pad;
 	struct v4l2_ctrl_handler ctrl_handler;
@@ -2184,9 +2189,6 @@ struct hi847 {
 
 	/* To serialize asynchronus callbacks */
 	struct mutex mutex;
-
-	/* Streaming on/off */
-	bool streaming;
 };
 
 static u64 to_pixel_rate(u32 f_index)
@@ -2247,7 +2249,6 @@ static int hi847_write_reg(struct hi847 *hi847, u16 reg, u16 len, u32 val)
 static int hi847_write_reg_list(struct hi847 *hi847,
 				const struct hi847_reg_list *r_list)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&hi847->sd);
 	unsigned int i;
 	int ret;
 
@@ -2256,7 +2257,7 @@ static int hi847_write_reg_list(struct hi847 *hi847,
 				      HI847_REG_VALUE_16BIT,
 				      r_list->regs[i].val);
 		if (ret) {
-			dev_err_ratelimited(&client->dev,
+			dev_err_ratelimited(hi847->dev,
 					    "failed to write reg 0x%4.4x. error = %d",
 					    r_list->regs[i].address, ret);
 			return ret;
@@ -2411,7 +2412,6 @@ static int hi847_set_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct hi847 *hi847 = container_of(ctrl->handler,
 					     struct hi847, ctrl_handler);
-	struct i2c_client *client = v4l2_get_subdevdata(&hi847->sd);
 	s64 exposure_max;
 	int ret = 0;
 
@@ -2427,7 +2427,7 @@ static int hi847_set_ctrl(struct v4l2_ctrl *ctrl)
 	}
 
 	/* V4L2 controls values will be applied only when power is already up */
-	if (!pm_runtime_get_if_in_use(&client->dev))
+	if (!pm_runtime_get_if_in_use(hi847->dev))
 		return 0;
 
 	switch (ctrl->id) {
@@ -2469,7 +2469,7 @@ static int hi847_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	pm_runtime_put(hi847->dev);
 
 	return ret;
 }
@@ -2560,7 +2560,6 @@ static void hi847_assign_pad_format(const struct hi847_mode *mode,
 
 static int hi847_start_streaming(struct hi847 *hi847)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&hi847->sd);
 	const struct hi847_reg_list *reg_list;
 	int link_freq_index, ret;
 
@@ -2568,14 +2567,14 @@ static int hi847_start_streaming(struct hi847 *hi847)
 	reg_list = &link_freq_configs[link_freq_index].reg_list;
 	ret = hi847_write_reg_list(hi847, reg_list);
 	if (ret) {
-		dev_err(&client->dev, "failed to set plls");
+		dev_err(hi847->dev, "failed to set plls");
 		return ret;
 	}
 
 	reg_list = &hi847->cur_mode->reg_list;
 	ret = hi847_write_reg_list(hi847, reg_list);
 	if (ret) {
-		dev_err(&client->dev, "failed to set mode");
+		dev_err(hi847->dev, "failed to set mode");
 		return ret;
 	}
 
@@ -2590,7 +2589,7 @@ static int hi847_start_streaming(struct hi847 *hi847)
 			      HI847_REG_VALUE_16BIT, HI847_MODE_STREAMING);
 
 	if (ret) {
-		dev_err(&client->dev, "failed to set stream");
+		dev_err(hi847->dev, "failed to set stream");
 		return ret;
 	}
 
@@ -2599,33 +2598,26 @@ static int hi847_start_streaming(struct hi847 *hi847)
 
 static void hi847_stop_streaming(struct hi847 *hi847)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&hi847->sd);
-
 	if (hi847_write_reg(hi847, HI847_REG_MODE_TG,
 			    HI847_REG_VALUE_16BIT, HI847_REG_MODE_TG_DISABLE))
-		dev_err(&client->dev, "failed to set stream 0x%x",
+		dev_err(hi847->dev, "failed to set stream 0x%x",
 			HI847_REG_MODE_TG);
 
 	if (hi847_write_reg(hi847, HI847_REG_MODE_SELECT,
 			    HI847_REG_VALUE_16BIT, HI847_MODE_STANDBY))
-		dev_err(&client->dev, "failed to set stream 0x%x",
+		dev_err(hi847->dev, "failed to set stream 0x%x",
 		HI847_REG_MODE_SELECT);
 }
 
 static int hi847_set_stream(struct v4l2_subdev *sd, int enable)
 {
 	struct hi847 *hi847 = to_hi847(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	int ret = 0;
 
-	if (hi847->streaming == enable)
-		return 0;
-
 	mutex_lock(&hi847->mutex);
 	if (enable) {
-		ret = pm_runtime_get_sync(&client->dev);
-		if (ret < 0) {
-			pm_runtime_put_noidle(&client->dev);
+		ret = pm_runtime_resume_and_get(hi847->dev);
+		if (ret) {
 			mutex_unlock(&hi847->mutex);
 			return ret;
 		}
@@ -2634,56 +2626,15 @@ static int hi847_set_stream(struct v4l2_subdev *sd, int enable)
 		if (ret) {
 			enable = 0;
 			hi847_stop_streaming(hi847);
-			pm_runtime_put(&client->dev);
+			pm_runtime_put(hi847->dev);
 		}
 	} else {
 		hi847_stop_streaming(hi847);
-		pm_runtime_put(&client->dev);
-	}
-
-	hi847->streaming = enable;
-	mutex_unlock(&hi847->mutex);
-
-	return ret;
-}
-
-static int __maybe_unused hi847_suspend(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct hi847 *hi847 = to_hi847(sd);
-
-	mutex_lock(&hi847->mutex);
-	if (hi847->streaming)
-		hi847_stop_streaming(hi847);
-
-	mutex_unlock(&hi847->mutex);
-
-	return 0;
-}
-
-static int __maybe_unused hi847_resume(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct hi847 *hi847 = to_hi847(sd);
-	int ret;
-
-	mutex_lock(&hi847->mutex);
-	if (hi847->streaming) {
-		ret = hi847_start_streaming(hi847);
-		if (ret)
-			goto error;
+		pm_runtime_put(hi847->dev);
 	}
 
 	mutex_unlock(&hi847->mutex);
 
-	return 0;
-
-error:
-	hi847_stop_streaming(hi847);
-	hi847->streaming = 0;
-	mutex_unlock(&hi847->mutex);
 	return ret;
 }
 
@@ -2703,7 +2654,7 @@ static int hi847_set_format(struct v4l2_subdev *sd,
 	mutex_lock(&hi847->mutex);
 	hi847_assign_pad_format(mode, &fmt->format);
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
-		*v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) =
+		*v4l2_subdev_state_get_format(sd_state, fmt->pad) =
 			fmt->format;
 	} else {
 		hi847->cur_mode = mode;
@@ -2738,9 +2689,8 @@ static int hi847_get_format(struct v4l2_subdev *sd,
 
 	mutex_lock(&hi847->mutex);
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
-		fmt->format = *v4l2_subdev_get_try_format(&hi847->sd,
-							  sd_state,
-							  fmt->pad);
+		fmt->format = *v4l2_subdev_state_get_format(sd_state,
+							    fmt->pad);
 	else
 		hi847_assign_pad_format(hi847->cur_mode, &fmt->format);
 
@@ -2785,7 +2735,7 @@ static int hi847_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 
 	mutex_lock(&hi847->mutex);
 	hi847_assign_pad_format(&supported_modes[0],
-				v4l2_subdev_get_try_format(sd, fh->state, 0));
+				v4l2_subdev_state_get_format(fh->state, 0));
 	mutex_unlock(&hi847->mutex);
 
 	return 0;
@@ -2817,7 +2767,6 @@ static const struct v4l2_subdev_internal_ops hi847_internal_ops = {
 
 static int hi847_identify_module(struct hi847 *hi847)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&hi847->sd);
 	int ret;
 	u32 val;
 
@@ -2827,7 +2776,7 @@ static int hi847_identify_module(struct hi847 *hi847)
 		return ret;
 
 	if (val != HI847_CHIP_ID) {
-		dev_err(&client->dev, "chip id mismatch: %x!=%x",
+		dev_err(hi847->dev, "chip id mismatch: %x!=%x",
 			HI847_CHIP_ID, val);
 		return -ENXIO;
 	}
@@ -2842,24 +2791,12 @@ static int hi847_check_hwcfg(struct device *dev)
 	struct v4l2_fwnode_endpoint bus_cfg = {
 		.bus_type = V4L2_MBUS_CSI2_DPHY
 	};
-	u32 mclk;
 	int ret;
 	unsigned int i, j;
 
 	if (!fwnode)
 		return -ENXIO;
 
-	ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
-	if (ret) {
-		dev_err(dev, "can't get clock frequency");
-		return ret;
-	}
-
-	if (mclk != HI847_MCLK) {
-		dev_err(dev, "external clock %d is not supported", mclk);
-		return -EINVAL;
-	}
-
 	ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
 	if (!ep)
 		return -ENXIO;
@@ -2911,22 +2848,36 @@ static void hi847_remove(struct i2c_client *client)
 	v4l2_async_unregister_subdev(sd);
 	media_entity_cleanup(&sd->entity);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	pm_runtime_disable(&client->dev);
+	pm_runtime_disable(hi847->dev);
 	mutex_destroy(&hi847->mutex);
 }
 
 static int hi847_probe(struct i2c_client *client)
 {
 	struct hi847 *hi847;
+	unsigned long freq;
 	int ret;
 
 	hi847 = devm_kzalloc(&client->dev, sizeof(*hi847), GFP_KERNEL);
 	if (!hi847)
 		return -ENOMEM;
 
-	ret = hi847_check_hwcfg(&client->dev);
+	hi847->dev = &client->dev;
+
+	hi847->clk = devm_v4l2_sensor_clk_get(hi847->dev, NULL);
+	if (IS_ERR(hi847->clk))
+		return dev_err_probe(hi847->dev, PTR_ERR(hi847->clk),
+				     "failed to get clock\n");
+
+	freq = clk_get_rate(hi847->clk);
+	if (freq != HI847_MCLK)
+		return dev_err_probe(hi847->dev, -EINVAL,
+				     "external clock %lu is not supported\n",
+				     freq);
+
+	ret = hi847_check_hwcfg(hi847->dev);
 	if (ret) {
-		dev_err(&client->dev, "failed to get HW configuration: %d",
+		dev_err(hi847->dev, "failed to get HW configuration: %d",
 			ret);
 		return ret;
 	}
@@ -2934,7 +2885,7 @@ static int hi847_probe(struct i2c_client *client)
 	v4l2_i2c_subdev_init(&hi847->sd, client, &hi847_subdev_ops);
 	ret = hi847_identify_module(hi847);
 	if (ret) {
-		dev_err(&client->dev, "failed to find sensor: %d", ret);
+		dev_err(hi847->dev, "failed to find sensor: %d", ret);
 		return ret;
 	}
 
@@ -2942,7 +2893,7 @@ static int hi847_probe(struct i2c_client *client)
 	hi847->cur_mode = &supported_modes[0];
 	ret = hi847_init_controls(hi847);
 	if (ret) {
-		dev_err(&client->dev, "failed to init controls: %d", ret);
+		dev_err(hi847->dev, "failed to init controls: %d", ret);
 		goto probe_error_v4l2_ctrl_handler_free;
 	}
 
@@ -2953,20 +2904,20 @@ static int hi847_probe(struct i2c_client *client)
 	hi847->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ret = media_entity_pads_init(&hi847->sd.entity, 1, &hi847->pad);
 	if (ret) {
-		dev_err(&client->dev, "failed to init entity pads: %d", ret);
+		dev_err(hi847->dev, "failed to init entity pads: %d", ret);
 		goto probe_error_v4l2_ctrl_handler_free;
 	}
 
 	ret = v4l2_async_register_subdev_sensor(&hi847->sd);
 	if (ret < 0) {
-		dev_err(&client->dev, "failed to register V4L2 subdev: %d",
+		dev_err(hi847->dev, "failed to register V4L2 subdev: %d",
 			ret);
 		goto probe_error_media_entity_cleanup;
 	}
 
-	pm_runtime_set_active(&client->dev);
-	pm_runtime_enable(&client->dev);
-	pm_runtime_idle(&client->dev);
+	pm_runtime_set_active(hi847->dev);
+	pm_runtime_enable(hi847->dev);
+	pm_runtime_idle(hi847->dev);
 
 	return 0;
 
@@ -2980,10 +2931,6 @@ probe_error_v4l2_ctrl_handler_free:
 	return ret;
 }
 
-static const struct dev_pm_ops hi847_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(hi847_suspend, hi847_resume)
-};
-
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id hi847_acpi_ids[] = {
 	{"HYV0847"},
@@ -2996,7 +2943,6 @@ MODULE_DEVICE_TABLE(acpi, hi847_acpi_ids);
 static struct i2c_driver hi847_i2c_driver = {
 	.driver = {
 		.name = "hi847",
-		.pm = &hi847_pm_ops,
 		.acpi_match_table = ACPI_PTR(hi847_acpi_ids),
 	},
 	.probe = hi847_probe,
@@ -3005,6 +2951,6 @@ static struct i2c_driver hi847_i2c_driver = {
 
 module_i2c_driver(hi847_i2c_driver);
 
-MODULE_AUTHOR("Shawn Tu <shawnx.tu@intel.com>");
+MODULE_AUTHOR("Shawn Tu");
 MODULE_DESCRIPTION("Hynix HI847 sensor driver");
 MODULE_LICENSE("GPL v2");