1 files changed, 78 insertions, 139 deletions

diff --git a/drivers/media/i2c/imx355.c b/drivers/media/i2c/imx355.c
index 25d4dbb6041e..776107efe386 100644
--- a/drivers/media/i2c/imx355.c
+++ b/drivers/media/i2c/imx355.c
@@ -1,11 +1,13 @@
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (C) 2018 Intel Corporation
 
-#include <asm/unaligned.h>
 #include <linux/acpi.h>
+#include <linux/clk.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-event.h>
@@ -56,7 +58,7 @@
 #define IMX355_REG_ORIENTATION		0x0101
 
 /* default link frequency and external clock */
-#define IMX355_LINK_FREQ_DEFAULT	360000000
+#define IMX355_LINK_FREQ_DEFAULT	360000000LL
 #define IMX355_EXT_CLK			19200000
 #define IMX355_LINK_FREQ_INDEX		0
 
@@ -92,12 +94,13 @@ struct imx355_mode {
 };
 
 struct imx355_hwcfg {
-	u32 ext_clk;			/* sensor external clk */
-	s64 *link_freqs;		/* CSI-2 link frequencies */
-	unsigned int nr_of_link_freqs;
+	unsigned long link_freq_bitmap;
 };
 
 struct imx355 {
+	struct device *dev;
+	struct clk *clk;
+
 	struct v4l2_subdev sd;
 	struct media_pad pad;
 
@@ -115,7 +118,6 @@ struct imx355 {
 	const struct imx355_mode *cur_mode;
 
 	struct imx355_hwcfg *hwcfg;
-	s64 link_def_freq;	/* CSI-2 link default frequency */
 
 	/*
 	 * Mutex for serialized access:
@@ -123,9 +125,6 @@ struct imx355 {
 	 * Protect access to sensor v4l2 controls.
 	 */
 	struct mutex mutex;
-
-	/* Streaming on/off */
-	bool streaming;
 };
 
 static const struct imx355_reg imx355_global_regs[] = {
@@ -882,7 +881,10 @@ static const char * const imx355_test_pattern_menu[] = {
 	"Pseudorandom Sequence (PN9)",
 };
 
-/* supported link frequencies */
+/*
+ * When adding more than the one below, make sure the disallowed ones will
+ * actually be disabled in the LINK_FREQ control.
+ */
 static const s64 link_freq_menu_items[] = {
 	IMX355_LINK_FREQ_DEFAULT,
 };
@@ -1138,14 +1140,13 @@ static int imx355_write_reg(struct imx355 *imx355, u16 reg, u32 len, u32 val)
 static int imx355_write_regs(struct imx355 *imx355,
 			     const struct imx355_reg *regs, u32 len)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&imx355->sd);
 	int ret;
 	u32 i;
 
 	for (i = 0; i < len; i++) {
 		ret = imx355_write_reg(imx355, regs[i].address, 1, regs[i].val);
 		if (ret) {
-			dev_err_ratelimited(&client->dev,
+			dev_err_ratelimited(imx355->dev,
 					    "write reg 0x%4.4x return err %d",
 					    regs[i].address, ret);
 
@@ -1161,7 +1162,7 @@ static int imx355_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 {
 	struct imx355 *imx355 = to_imx355(sd);
 	struct v4l2_mbus_framefmt *try_fmt =
-		v4l2_subdev_get_try_format(sd, fh->state, 0);
+		v4l2_subdev_state_get_format(fh->state, 0);
 
 	mutex_lock(&imx355->mutex);
 
@@ -1180,7 +1181,6 @@ static int imx355_set_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct imx355 *imx355 = container_of(ctrl->handler,
 					     struct imx355, ctrl_handler);
-	struct i2c_client *client = v4l2_get_subdevdata(&imx355->sd);
 	s64 max;
 	int ret;
 
@@ -1199,7 +1199,7 @@ static int imx355_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(imx355->dev))
 		return 0;
 
 	switch (ctrl->id) {
@@ -1233,12 +1233,12 @@ static int imx355_set_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	default:
 		ret = -EINVAL;
-		dev_info(&client->dev, "ctrl(id:0x%x,val:0x%x) is not handled",
+		dev_info(imx355->dev, "ctrl(id:0x%x,val:0x%x) is not handled",
 			 ctrl->id, ctrl->val);
 		break;
 	}
 
-	pm_runtime_put(&client->dev);
+	pm_runtime_put(imx355->dev);
 
 	return ret;
 }
@@ -1302,10 +1302,9 @@ static int imx355_do_get_pad_format(struct imx355 *imx355,
 				    struct v4l2_subdev_format *fmt)
 {
 	struct v4l2_mbus_framefmt *framefmt;
-	struct v4l2_subdev *sd = &imx355->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 {
 		imx355_update_pad_format(imx355, imx355->cur_mode, fmt);
@@ -1356,11 +1355,11 @@ imx355_set_pad_format(struct v4l2_subdev *sd,
 				      fmt->format.width, fmt->format.height);
 	imx355_update_pad_format(imx355, 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 {
 		imx355->cur_mode = mode;
-		pixel_rate = imx355->link_def_freq * 2 * 4;
+		pixel_rate = IMX355_LINK_FREQ_DEFAULT * 2 * 4;
 		do_div(pixel_rate, 10);
 		__v4l2_ctrl_s_ctrl_int64(imx355->pixel_rate, pixel_rate);
 		/* Update limits and set FPS to default */
@@ -1388,7 +1387,6 @@ imx355_set_pad_format(struct v4l2_subdev *sd,
 /* Start streaming */
 static int imx355_start_streaming(struct imx355 *imx355)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&imx355->sd);
 	const struct imx355_reg_list *reg_list;
 	int ret;
 
@@ -1396,7 +1394,7 @@ static int imx355_start_streaming(struct imx355 *imx355)
 	reg_list = &imx355_global_setting;
 	ret = imx355_write_regs(imx355, reg_list->regs, reg_list->num_of_regs);
 	if (ret) {
-		dev_err(&client->dev, "failed to set global settings");
+		dev_err(imx355->dev, "failed to set global settings");
 		return ret;
 	}
 
@@ -1404,7 +1402,7 @@ static int imx355_start_streaming(struct imx355 *imx355)
 	reg_list = &imx355->cur_mode->reg_list;
 	ret = imx355_write_regs(imx355, reg_list->regs, reg_list->num_of_regs);
 	if (ret) {
-		dev_err(&client->dev, "failed to set mode");
+		dev_err(imx355->dev, "failed to set mode");
 		return ret;
 	}
 
@@ -1432,17 +1430,12 @@ static int imx355_stop_streaming(struct imx355 *imx355)
 static int imx355_set_stream(struct v4l2_subdev *sd, int enable)
 {
 	struct imx355 *imx355 = to_imx355(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	int ret = 0;
 
 	mutex_lock(&imx355->mutex);
-	if (imx355->streaming == enable) {
-		mutex_unlock(&imx355->mutex);
-		return 0;
-	}
 
 	if (enable) {
-		ret = pm_runtime_resume_and_get(&client->dev);
+		ret = pm_runtime_resume_and_get(imx355->dev);
 		if (ret < 0)
 			goto err_unlock;
 
@@ -1455,11 +1448,9 @@ static int imx355_set_stream(struct v4l2_subdev *sd, int enable)
 			goto err_rpm_put;
 	} else {
 		imx355_stop_streaming(imx355);
-		pm_runtime_put(&client->dev);
+		pm_runtime_put(imx355->dev);
 	}
 
-	imx355->streaming = enable;
-
 	/* vflip and hflip cannot change during streaming */
 	__v4l2_ctrl_grab(imx355->vflip, enable);
 	__v4l2_ctrl_grab(imx355->hflip, enable);
@@ -1469,48 +1460,16 @@ static int imx355_set_stream(struct v4l2_subdev *sd, int enable)
 	return ret;
 
 err_rpm_put:
-	pm_runtime_put(&client->dev);
+	pm_runtime_put(imx355->dev);
 err_unlock:
 	mutex_unlock(&imx355->mutex);
 
 	return ret;
 }
 
-static int __maybe_unused imx355_suspend(struct device *dev)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	struct imx355 *imx355 = to_imx355(sd);
-
-	if (imx355->streaming)
-		imx355_stop_streaming(imx355);
-
-	return 0;
-}
-
-static int __maybe_unused imx355_resume(struct device *dev)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	struct imx355 *imx355 = to_imx355(sd);
-	int ret;
-
-	if (imx355->streaming) {
-		ret = imx355_start_streaming(imx355);
-		if (ret)
-			goto error;
-	}
-
-	return 0;
-
-error:
-	imx355_stop_streaming(imx355);
-	imx355->streaming = 0;
-	return ret;
-}
-
 /* Verify chip ID */
 static int imx355_identify_module(struct imx355 *imx355)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&imx355->sd);
 	int ret;
 	u32 val;
 
@@ -1519,7 +1478,7 @@ static int imx355_identify_module(struct imx355 *imx355)
 		return ret;
 
 	if (val != IMX355_CHIP_ID) {
-		dev_err(&client->dev, "chip id mismatch: %x!=%x",
+		dev_err(imx355->dev, "chip id mismatch: %x!=%x",
 			IMX355_CHIP_ID, val);
 		return -EIO;
 	}
@@ -1559,7 +1518,7 @@ static const struct v4l2_subdev_internal_ops imx355_internal_ops = {
 /* Initialize control handlers */
 static int imx355_init_controls(struct imx355 *imx355)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(&imx355->sd);
+	struct v4l2_fwnode_device_properties props;
 	struct v4l2_ctrl_handler *ctrl_hdlr;
 	s64 exposure_max;
 	s64 vblank_def;
@@ -1571,7 +1530,7 @@ static int imx355_init_controls(struct imx355 *imx355)
 	int ret;
 
 	ctrl_hdlr = &imx355->ctrl_handler;
-	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
+	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12);
 	if (ret)
 		return ret;
 
@@ -1584,7 +1543,7 @@ static int imx355_init_controls(struct imx355 *imx355)
 		imx355->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 
 	/* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
-	pixel_rate = imx355->link_def_freq * 2 * 4;
+	pixel_rate = IMX355_LINK_FREQ_DEFAULT * 2 * 4;
 	do_div(pixel_rate, 10);
 	/* By default, PIXEL_RATE is read only */
 	imx355->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx355_ctrl_ops,
@@ -1639,10 +1598,19 @@ static int imx355_init_controls(struct imx355 *imx355)
 				     0, 0, imx355_test_pattern_menu);
 	if (ctrl_hdlr->error) {
 		ret = ctrl_hdlr->error;
-		dev_err(&client->dev, "control init failed: %d", ret);
+		dev_err(imx355->dev, "control init failed: %d", ret);
 		goto error;
 	}
 
+	ret = v4l2_fwnode_device_parse(imx355->dev, &props);
+	if (ret)
+		goto error;
+
+	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx355_ctrl_ops,
+					      &props);
+	if (ret)
+		goto error;
+
 	imx355->sd.ctrl_handler = ctrl_hdlr;
 
 	return 0;
@@ -1661,7 +1629,6 @@ static struct imx355_hwcfg *imx355_get_hwcfg(struct device *dev)
 	};
 	struct fwnode_handle *ep;
 	struct fwnode_handle *fwnode = dev_fwnode(dev);
-	unsigned int i;
 	int ret;
 
 	if (!fwnode)
@@ -1679,38 +1646,14 @@ static struct imx355_hwcfg *imx355_get_hwcfg(struct device *dev)
 	if (!cfg)
 		goto out_err;
 
-	ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
-				       &cfg->ext_clk);
-	if (ret) {
-		dev_err(dev, "can't get clock frequency");
-		goto out_err;
-	}
-
-	dev_dbg(dev, "ext clk: %d", cfg->ext_clk);
-	if (cfg->ext_clk != IMX355_EXT_CLK) {
-		dev_err(dev, "external clock %d is not supported",
-			cfg->ext_clk);
-		goto out_err;
-	}
-
-	dev_dbg(dev, "num of link freqs: %d", bus_cfg.nr_of_link_frequencies);
-	if (!bus_cfg.nr_of_link_frequencies) {
-		dev_warn(dev, "no link frequencies defined");
-		goto out_err;
-	}
-
-	cfg->nr_of_link_freqs = bus_cfg.nr_of_link_frequencies;
-	cfg->link_freqs = devm_kcalloc(dev,
-				       bus_cfg.nr_of_link_frequencies + 1,
-				       sizeof(*cfg->link_freqs), GFP_KERNEL);
-	if (!cfg->link_freqs)
+	ret = v4l2_link_freq_to_bitmap(dev, bus_cfg.link_frequencies,
+				       bus_cfg.nr_of_link_frequencies,
+				       link_freq_menu_items,
+				       ARRAY_SIZE(link_freq_menu_items),
+				       &cfg->link_freq_bitmap);
+	if (ret)
 		goto out_err;
 
-	for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
-		cfg->link_freqs[i] = bus_cfg.link_frequencies[i];
-		dev_dbg(dev, "link_freq[%d] = %lld", i, cfg->link_freqs[i]);
-	}
-
 	v4l2_fwnode_endpoint_free(&bus_cfg);
 	fwnode_handle_put(ep);
 	return cfg;
@@ -1724,52 +1667,51 @@ out_err:
 static int imx355_probe(struct i2c_client *client)
 {
 	struct imx355 *imx355;
+	unsigned long freq;
 	int ret;
-	u32 i;
 
 	imx355 = devm_kzalloc(&client->dev, sizeof(*imx355), GFP_KERNEL);
 	if (!imx355)
 		return -ENOMEM;
 
+	imx355->dev = &client->dev;
+
 	mutex_init(&imx355->mutex);
 
+	imx355->clk = devm_v4l2_sensor_clk_get(imx355->dev, NULL);
+	if (IS_ERR(imx355->clk))
+		return dev_err_probe(imx355->dev, PTR_ERR(imx355->clk),
+				     "failed to get clock\n");
+
+	freq = clk_get_rate(imx355->clk);
+	if (freq != IMX355_EXT_CLK)
+		return dev_err_probe(imx355->dev, -EINVAL,
+				     "external clock %lu is not supported\n",
+				     freq);
+
 	/* Initialize subdev */
 	v4l2_i2c_subdev_init(&imx355->sd, client, &imx355_subdev_ops);
 
 	/* Check module identity */
 	ret = imx355_identify_module(imx355);
 	if (ret) {
-		dev_err(&client->dev, "failed to find sensor: %d", ret);
+		dev_err(imx355->dev, "failed to find sensor: %d", ret);
 		goto error_probe;
 	}
 
-	imx355->hwcfg = imx355_get_hwcfg(&client->dev);
+	imx355->hwcfg = imx355_get_hwcfg(imx355->dev);
 	if (!imx355->hwcfg) {
-		dev_err(&client->dev, "failed to get hwcfg");
+		dev_err(imx355->dev, "failed to get hwcfg");
 		ret = -ENODEV;
 		goto error_probe;
 	}
 
-	imx355->link_def_freq = link_freq_menu_items[IMX355_LINK_FREQ_INDEX];
-	for (i = 0; i < imx355->hwcfg->nr_of_link_freqs; i++) {
-		if (imx355->hwcfg->link_freqs[i] == imx355->link_def_freq) {
-			dev_dbg(&client->dev, "link freq index %d matched", i);
-			break;
-		}
-	}
-
-	if (i == imx355->hwcfg->nr_of_link_freqs) {
-		dev_err(&client->dev, "no link frequency supported");
-		ret = -EINVAL;
-		goto error_probe;
-	}
-
 	/* Set default mode to max resolution */
 	imx355->cur_mode = &supported_modes[0];
 
 	ret = imx355_init_controls(imx355);
 	if (ret) {
-		dev_err(&client->dev, "failed to init controls: %d", ret);
+		dev_err(imx355->dev, "failed to init controls: %d", ret);
 		goto error_probe;
 	}
 
@@ -1784,25 +1726,27 @@ static int imx355_probe(struct i2c_client *client)
 	imx355->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ret = media_entity_pads_init(&imx355->sd.entity, 1, &imx355->pad);
 	if (ret) {
-		dev_err(&client->dev, "failed to init entity pads: %d", ret);
+		dev_err(imx355->dev, "failed to init entity pads: %d", ret);
 		goto error_handler_free;
 	}
 
-	ret = v4l2_async_register_subdev_sensor(&imx355->sd);
-	if (ret < 0)
-		goto error_media_entity;
-
 	/*
 	 * 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(imx355->dev);
+	pm_runtime_enable(imx355->dev);
+	pm_runtime_idle(imx355->dev);
+
+	ret = v4l2_async_register_subdev_sensor(&imx355->sd);
+	if (ret < 0)
+		goto error_media_entity_runtime_pm;
 
 	return 0;
 
-error_media_entity:
+error_media_entity_runtime_pm:
+	pm_runtime_disable(imx355->dev);
+	pm_runtime_set_suspended(imx355->dev);
 	media_entity_cleanup(&imx355->sd.entity);
 
 error_handler_free:
@@ -1823,16 +1767,12 @@ static void imx355_remove(struct i2c_client *client)
 	media_entity_cleanup(&sd->entity);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
 
-	pm_runtime_disable(&client->dev);
-	pm_runtime_set_suspended(&client->dev);
+	pm_runtime_disable(imx355->dev);
+	pm_runtime_set_suspended(imx355->dev);
 
 	mutex_destroy(&imx355->mutex);
 }
 
-static const struct dev_pm_ops imx355_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(imx355_suspend, imx355_resume)
-};
-
 static const struct acpi_device_id imx355_acpi_ids[] __maybe_unused = {
 	{ "SONY355A" },
 	{ /* sentinel */ }
@@ -1842,16 +1782,15 @@ MODULE_DEVICE_TABLE(acpi, imx355_acpi_ids);
 static struct i2c_driver imx355_i2c_driver = {
 	.driver = {
 		.name = "imx355",
-		.pm = &imx355_pm_ops,
 		.acpi_match_table = ACPI_PTR(imx355_acpi_ids),
 	},
-	.probe_new = imx355_probe,
+	.probe = imx355_probe,
 	.remove = imx355_remove,
 };
 module_i2c_driver(imx355_i2c_driver);
 
 MODULE_AUTHOR("Qiu, Tianshu <tian.shu.qiu@intel.com>");
-MODULE_AUTHOR("Rapolu, Chiranjeevi <chiranjeevi.rapolu@intel.com>");
+MODULE_AUTHOR("Rapolu, Chiranjeevi");
 MODULE_AUTHOR("Bingbu Cao <bingbu.cao@intel.com>");
 MODULE_AUTHOR("Yang, Hyungwoo");
 MODULE_DESCRIPTION("Sony imx355 sensor driver");