media: platform: rename s3c-camif/ to samsung/s3c-camif/

As the end goal is to have platform drivers split by vendor,
rename s3c-camif/ to samsung/s3c-camif/.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

1 files changed, 0 insertions, 639 deletions

diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c
deleted file mode 100644
index 6e8ef86566b7..000000000000
--- a/drivers/media/platform/s3c-camif/camif-core.c
+++ /dev/null
@@ -1,639 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * s3c24xx/s3c64xx SoC series Camera Interface (CAMIF) driver
- *
- * Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
- * Copyright (C) 2012 Tomasz Figa <tomasz.figa@gmail.com>
- */
-#define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
-
-#include <linux/bug.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/errno.h>
-#include <linux/gpio.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-
-#include <media/media-device.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-ioctl.h>
-#include <media/videobuf2-v4l2.h>
-#include <media/videobuf2-dma-contig.h>
-
-#include "camif-core.h"
-
-static char *camif_clocks[CLK_MAX_NUM] = {
-	/* HCLK CAMIF clock */
-	[CLK_GATE]	= "camif",
-	/* CAMIF / external camera sensor master clock */
-	[CLK_CAM]	= "camera",
-};
-
-static const struct camif_fmt camif_formats[] = {
-	{
-		.fourcc		= V4L2_PIX_FMT_YUV422P,
-		.depth		= 16,
-		.ybpp		= 1,
-		.color		= IMG_FMT_YCBCR422P,
-		.colplanes	= 3,
-		.flags		= FMT_FL_S3C24XX_CODEC |
-				  FMT_FL_S3C64XX,
-	}, {
-		.fourcc		= V4L2_PIX_FMT_YUV420,
-		.depth		= 12,
-		.ybpp		= 1,
-		.color		= IMG_FMT_YCBCR420,
-		.colplanes	= 3,
-		.flags		= FMT_FL_S3C24XX_CODEC |
-				  FMT_FL_S3C64XX,
-	}, {
-		.fourcc		= V4L2_PIX_FMT_YVU420,
-		.depth		= 12,
-		.ybpp		= 1,
-		.color		= IMG_FMT_YCRCB420,
-		.colplanes	= 3,
-		.flags		= FMT_FL_S3C24XX_CODEC |
-				  FMT_FL_S3C64XX,
-	}, {
-		.fourcc		= V4L2_PIX_FMT_RGB565X,
-		.depth		= 16,
-		.ybpp		= 2,
-		.color		= IMG_FMT_RGB565,
-		.colplanes	= 1,
-		.flags		= FMT_FL_S3C24XX_PREVIEW |
-				  FMT_FL_S3C64XX,
-	}, {
-		.fourcc		= V4L2_PIX_FMT_RGB32,
-		.depth		= 32,
-		.ybpp		= 4,
-		.color		= IMG_FMT_XRGB8888,
-		.colplanes	= 1,
-		.flags		= FMT_FL_S3C24XX_PREVIEW |
-				  FMT_FL_S3C64XX,
-	}, {
-		.fourcc		= V4L2_PIX_FMT_BGR666,
-		.depth		= 32,
-		.ybpp		= 4,
-		.color		= IMG_FMT_RGB666,
-		.colplanes	= 1,
-		.flags		= FMT_FL_S3C64XX,
-	}
-};
-
-/**
- * s3c_camif_find_format() - lookup camif color format by fourcc or an index
- * @vp: video path (DMA) description (codec/preview)
- * @pixelformat: fourcc to match, ignored if null
- * @index: index to the camif_formats array, ignored if negative
- */
-const struct camif_fmt *s3c_camif_find_format(struct camif_vp *vp,
-					      const u32 *pixelformat,
-					      int index)
-{
-	const struct camif_fmt *fmt, *def_fmt = NULL;
-	unsigned int i;
-	int id = 0;
-
-	if (index >= (int)ARRAY_SIZE(camif_formats))
-		return NULL;
-
-	for (i = 0; i < ARRAY_SIZE(camif_formats); ++i) {
-		fmt = &camif_formats[i];
-		if (vp && !(vp->fmt_flags & fmt->flags))
-			continue;
-		if (pixelformat && fmt->fourcc == *pixelformat)
-			return fmt;
-		if (index == id)
-			def_fmt = fmt;
-		id++;
-	}
-	return def_fmt;
-}
-
-static int camif_get_scaler_factor(u32 src, u32 tar, u32 *ratio, u32 *shift)
-{
-	unsigned int sh = 6;
-
-	if (src >= 64 * tar)
-		return -EINVAL;
-
-	while (sh--) {
-		unsigned int tmp = 1 << sh;
-		if (src >= tar * tmp) {
-			*shift = sh;
-			*ratio = tmp;
-			return 0;
-		}
-	}
-	*shift = 0;
-	*ratio = 1;
-	return 0;
-}
-
-int s3c_camif_get_scaler_config(struct camif_vp *vp,
-				struct camif_scaler *scaler)
-{
-	struct v4l2_rect *camif_crop = &vp->camif->camif_crop;
-	int source_x = camif_crop->width;
-	int source_y = camif_crop->height;
-	int target_x = vp->out_frame.rect.width;
-	int target_y = vp->out_frame.rect.height;
-	int ret;
-
-	if (vp->rotation == 90 || vp->rotation == 270)
-		swap(target_x, target_y);
-
-	ret = camif_get_scaler_factor(source_x, target_x, &scaler->pre_h_ratio,
-				      &scaler->h_shift);
-	if (ret < 0)
-		return ret;
-
-	ret = camif_get_scaler_factor(source_y, target_y, &scaler->pre_v_ratio,
-				      &scaler->v_shift);
-	if (ret < 0)
-		return ret;
-
-	scaler->pre_dst_width = source_x / scaler->pre_h_ratio;
-	scaler->pre_dst_height = source_y / scaler->pre_v_ratio;
-
-	scaler->main_h_ratio = (source_x << 8) / (target_x << scaler->h_shift);
-	scaler->main_v_ratio = (source_y << 8) / (target_y << scaler->v_shift);
-
-	scaler->scaleup_h = (target_x >= source_x);
-	scaler->scaleup_v = (target_y >= source_y);
-
-	scaler->copy = 0;
-
-	pr_debug("H: ratio: %u, shift: %u. V: ratio: %u, shift: %u.\n",
-		 scaler->pre_h_ratio, scaler->h_shift,
-		 scaler->pre_v_ratio, scaler->v_shift);
-
-	pr_debug("Source: %dx%d, Target: %dx%d, scaleup_h/v: %d/%d\n",
-		 source_x, source_y, target_x, target_y,
-		 scaler->scaleup_h, scaler->scaleup_v);
-
-	return 0;
-}
-
-static int camif_register_sensor(struct camif_dev *camif)
-{
-	struct s3c_camif_sensor_info *sensor = &camif->pdata.sensor;
-	struct v4l2_device *v4l2_dev = &camif->v4l2_dev;
-	struct i2c_adapter *adapter;
-	struct v4l2_subdev_format format;
-	struct v4l2_subdev *sd;
-	int ret;
-
-	camif->sensor.sd = NULL;
-
-	if (sensor->i2c_board_info.addr == 0)
-		return -EINVAL;
-
-	adapter = i2c_get_adapter(sensor->i2c_bus_num);
-	if (adapter == NULL) {
-		v4l2_warn(v4l2_dev, "failed to get I2C adapter %d\n",
-			  sensor->i2c_bus_num);
-		return -EPROBE_DEFER;
-	}
-
-	sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter,
-				       &sensor->i2c_board_info, NULL);
-	if (sd == NULL) {
-		i2c_put_adapter(adapter);
-		v4l2_warn(v4l2_dev, "failed to acquire subdev %s\n",
-			  sensor->i2c_board_info.type);
-		return -EPROBE_DEFER;
-	}
-	camif->sensor.sd = sd;
-
-	v4l2_info(v4l2_dev, "registered sensor subdevice %s\n", sd->name);
-
-	/* Get initial pixel format and set it at the camif sink pad */
-	format.pad = 0;
-	format.which = V4L2_SUBDEV_FORMAT_ACTIVE;
-	ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &format);
-
-	if (ret < 0)
-		return 0;
-
-	format.pad = CAMIF_SD_PAD_SINK;
-	v4l2_subdev_call(&camif->subdev, pad, set_fmt, NULL, &format);
-
-	v4l2_info(sd, "Initial format from sensor: %dx%d, %#x\n",
-		  format.format.width, format.format.height,
-		  format.format.code);
-	return 0;
-}
-
-static void camif_unregister_sensor(struct camif_dev *camif)
-{
-	struct v4l2_subdev *sd = camif->sensor.sd;
-	struct i2c_client *client = sd ? v4l2_get_subdevdata(sd) : NULL;
-	struct i2c_adapter *adapter;
-
-	if (client == NULL)
-		return;
-
-	adapter = client->adapter;
-	v4l2_device_unregister_subdev(sd);
-	camif->sensor.sd = NULL;
-	i2c_unregister_device(client);
-	i2c_put_adapter(adapter);
-}
-
-static int camif_create_media_links(struct camif_dev *camif)
-{
-	int i, ret;
-
-	ret = media_create_pad_link(&camif->sensor.sd->entity, 0,
-				&camif->subdev.entity, CAMIF_SD_PAD_SINK,
-				MEDIA_LNK_FL_IMMUTABLE |
-				MEDIA_LNK_FL_ENABLED);
-	if (ret)
-		return ret;
-
-	for (i = 1; i < CAMIF_SD_PADS_NUM && !ret; i++) {
-		ret = media_create_pad_link(&camif->subdev.entity, i,
-				&camif->vp[i - 1].vdev.entity, 0,
-				MEDIA_LNK_FL_IMMUTABLE |
-				MEDIA_LNK_FL_ENABLED);
-	}
-
-	return ret;
-}
-
-static int camif_register_video_nodes(struct camif_dev *camif)
-{
-	int ret = s3c_camif_register_video_node(camif, VP_CODEC);
-	if (ret < 0)
-		return ret;
-
-	return s3c_camif_register_video_node(camif, VP_PREVIEW);
-}
-
-static void camif_unregister_video_nodes(struct camif_dev *camif)
-{
-	s3c_camif_unregister_video_node(camif, VP_CODEC);
-	s3c_camif_unregister_video_node(camif, VP_PREVIEW);
-}
-
-static void camif_unregister_media_entities(struct camif_dev *camif)
-{
-	camif_unregister_video_nodes(camif);
-	camif_unregister_sensor(camif);
-}
-
-/*
- * Media device
- */
-static int camif_media_dev_init(struct camif_dev *camif)
-{
-	struct media_device *md = &camif->media_dev;
-	struct v4l2_device *v4l2_dev = &camif->v4l2_dev;
-	unsigned int ip_rev = camif->variant->ip_revision;
-	int ret;
-
-	memset(md, 0, sizeof(*md));
-	snprintf(md->model, sizeof(md->model), "Samsung S3C%s CAMIF",
-		 ip_rev == S3C6410_CAMIF_IP_REV ? "6410" : "244X");
-	strscpy(md->bus_info, "platform", sizeof(md->bus_info));
-	md->hw_revision = ip_rev;
-
-	md->dev = camif->dev;
-
-	strscpy(v4l2_dev->name, "s3c-camif", sizeof(v4l2_dev->name));
-	v4l2_dev->mdev = md;
-
-	media_device_init(md);
-
-	ret = v4l2_device_register(camif->dev, v4l2_dev);
-	if (ret < 0)
-		return ret;
-
-	return ret;
-}
-
-static void camif_clk_put(struct camif_dev *camif)
-{
-	int i;
-
-	for (i = 0; i < CLK_MAX_NUM; i++) {
-		if (IS_ERR(camif->clock[i]))
-			continue;
-		clk_unprepare(camif->clock[i]);
-		clk_put(camif->clock[i]);
-		camif->clock[i] = ERR_PTR(-EINVAL);
-	}
-}
-
-static int camif_clk_get(struct camif_dev *camif)
-{
-	int ret, i;
-
-	for (i = 1; i < CLK_MAX_NUM; i++)
-		camif->clock[i] = ERR_PTR(-EINVAL);
-
-	for (i = 0; i < CLK_MAX_NUM; i++) {
-		camif->clock[i] = clk_get(camif->dev, camif_clocks[i]);
-		if (IS_ERR(camif->clock[i])) {
-			ret = PTR_ERR(camif->clock[i]);
-			goto err;
-		}
-		ret = clk_prepare(camif->clock[i]);
-		if (ret < 0) {
-			clk_put(camif->clock[i]);
-			camif->clock[i] = NULL;
-			goto err;
-		}
-	}
-	return 0;
-err:
-	camif_clk_put(camif);
-	dev_err(camif->dev, "failed to get clock: %s\n",
-		camif_clocks[i]);
-	return ret;
-}
-
-/*
- * The CAMIF device has two relatively independent data processing paths
- * that can source data from memory or the common camera input frontend.
- * Register interrupts for each data processing path (camif_vp).
- */
-static int camif_request_irqs(struct platform_device *pdev,
-			      struct camif_dev *camif)
-{
-	int irq, ret, i;
-
-	for (i = 0; i < CAMIF_VP_NUM; i++) {
-		struct camif_vp *vp = &camif->vp[i];
-
-		init_waitqueue_head(&vp->irq_queue);
-
-		irq = platform_get_irq(pdev, i);
-		if (irq <= 0)
-			return -ENXIO;
-
-		ret = devm_request_irq(&pdev->dev, irq, s3c_camif_irq_handler,
-				       0, dev_name(&pdev->dev), vp);
-		if (ret < 0) {
-			dev_err(&pdev->dev, "failed to install IRQ: %d\n", ret);
-			break;
-		}
-	}
-
-	return ret;
-}
-
-static int s3c_camif_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct s3c_camif_plat_data *pdata = dev->platform_data;
-	struct s3c_camif_drvdata *drvdata;
-	struct camif_dev *camif;
-	int ret = 0;
-
-	camif = devm_kzalloc(dev, sizeof(*camif), GFP_KERNEL);
-	if (!camif)
-		return -ENOMEM;
-
-	spin_lock_init(&camif->slock);
-	mutex_init(&camif->lock);
-
-	camif->dev = dev;
-
-	if (!pdata || !pdata->gpio_get || !pdata->gpio_put) {
-		dev_err(dev, "wrong platform data\n");
-		return -EINVAL;
-	}
-
-	camif->pdata = *pdata;
-	drvdata = (void *)platform_get_device_id(pdev)->driver_data;
-	camif->variant = drvdata->variant;
-
-	camif->io_base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(camif->io_base))
-		return PTR_ERR(camif->io_base);
-
-	ret = camif_request_irqs(pdev, camif);
-	if (ret < 0)
-		return ret;
-
-	ret = pdata->gpio_get();
-	if (ret < 0)
-		return ret;
-
-	ret = s3c_camif_create_subdev(camif);
-	if (ret < 0)
-		goto err_sd;
-
-	ret = camif_clk_get(camif);
-	if (ret < 0)
-		goto err_clk;
-
-	platform_set_drvdata(pdev, camif);
-	clk_set_rate(camif->clock[CLK_CAM],
-			camif->pdata.sensor.clock_frequency);
-
-	dev_info(dev, "sensor clock frequency: %lu\n",
-		 clk_get_rate(camif->clock[CLK_CAM]));
-	/*
-	 * Set initial pixel format, resolution and crop rectangle.
-	 * Must be done before a sensor subdev is registered as some
-	 * settings are overrode with values from sensor subdev.
-	 */
-	s3c_camif_set_defaults(camif);
-
-	pm_runtime_enable(dev);
-
-	ret = pm_runtime_resume_and_get(dev);
-	if (ret < 0)
-		goto err_disable;
-
-	ret = camif_media_dev_init(camif);
-	if (ret < 0)
-		goto err_pm;
-
-	ret = camif_register_sensor(camif);
-	if (ret < 0)
-		goto err_sens;
-
-	ret = v4l2_device_register_subdev(&camif->v4l2_dev, &camif->subdev);
-	if (ret < 0)
-		goto err_sens;
-
-	ret = v4l2_device_register_subdev_nodes(&camif->v4l2_dev);
-	if (ret < 0)
-		goto err_sens;
-
-	ret = camif_register_video_nodes(camif);
-	if (ret < 0)
-		goto err_sens;
-
-	ret = camif_create_media_links(camif);
-	if (ret < 0)
-		goto err_sens;
-
-	ret = media_device_register(&camif->media_dev);
-	if (ret < 0)
-		goto err_sens;
-
-	pm_runtime_put(dev);
-	return 0;
-
-err_sens:
-	v4l2_device_unregister(&camif->v4l2_dev);
-	media_device_unregister(&camif->media_dev);
-	media_device_cleanup(&camif->media_dev);
-	camif_unregister_media_entities(camif);
-err_pm:
-	pm_runtime_put(dev);
-err_disable:
-	pm_runtime_disable(dev);
-	camif_clk_put(camif);
-err_clk:
-	s3c_camif_unregister_subdev(camif);
-err_sd:
-	pdata->gpio_put();
-	return ret;
-}
-
-static int s3c_camif_remove(struct platform_device *pdev)
-{
-	struct camif_dev *camif = platform_get_drvdata(pdev);
-	struct s3c_camif_plat_data *pdata = &camif->pdata;
-
-	media_device_unregister(&camif->media_dev);
-	media_device_cleanup(&camif->media_dev);
-	camif_unregister_media_entities(camif);
-	v4l2_device_unregister(&camif->v4l2_dev);
-
-	pm_runtime_disable(&pdev->dev);
-	camif_clk_put(camif);
-	s3c_camif_unregister_subdev(camif);
-	pdata->gpio_put();
-
-	return 0;
-}
-
-static int s3c_camif_runtime_resume(struct device *dev)
-{
-	struct camif_dev *camif = dev_get_drvdata(dev);
-
-	clk_enable(camif->clock[CLK_GATE]);
-	/* null op on s3c244x */
-	clk_enable(camif->clock[CLK_CAM]);
-	return 0;
-}
-
-static int s3c_camif_runtime_suspend(struct device *dev)
-{
-	struct camif_dev *camif = dev_get_drvdata(dev);
-
-	/* null op on s3c244x */
-	clk_disable(camif->clock[CLK_CAM]);
-
-	clk_disable(camif->clock[CLK_GATE]);
-	return 0;
-}
-
-static const struct s3c_camif_variant s3c244x_camif_variant = {
-	.vp_pix_limits = {
-		[VP_CODEC] = {
-			.max_out_width		= 4096,
-			.max_sc_out_width	= 2048,
-			.out_width_align	= 16,
-			.min_out_width		= 16,
-			.max_height		= 4096,
-		},
-		[VP_PREVIEW] = {
-			.max_out_width		= 640,
-			.max_sc_out_width	= 640,
-			.out_width_align	= 16,
-			.min_out_width		= 16,
-			.max_height		= 480,
-		}
-	},
-	.pix_limits = {
-		.win_hor_offset_align	= 8,
-	},
-	.ip_revision = S3C244X_CAMIF_IP_REV,
-};
-
-static struct s3c_camif_drvdata s3c244x_camif_drvdata = {
-	.variant	= &s3c244x_camif_variant,
-	.bus_clk_freq	= 24000000UL,
-};
-
-static const struct s3c_camif_variant s3c6410_camif_variant = {
-	.vp_pix_limits = {
-		[VP_CODEC] = {
-			.max_out_width		= 4096,
-			.max_sc_out_width	= 2048,
-			.out_width_align	= 16,
-			.min_out_width		= 16,
-			.max_height		= 4096,
-		},
-		[VP_PREVIEW] = {
-			.max_out_width		= 4096,
-			.max_sc_out_width	= 720,
-			.out_width_align	= 16,
-			.min_out_width		= 16,
-			.max_height		= 4096,
-		}
-	},
-	.pix_limits = {
-		.win_hor_offset_align	= 8,
-	},
-	.ip_revision = S3C6410_CAMIF_IP_REV,
-	.has_img_effect = 1,
-	.vp_offset = 0x20,
-};
-
-static struct s3c_camif_drvdata s3c6410_camif_drvdata = {
-	.variant	= &s3c6410_camif_variant,
-	.bus_clk_freq	= 133000000UL,
-};
-
-static const struct platform_device_id s3c_camif_driver_ids[] = {
-	{
-		.name		= "s3c2440-camif",
-		.driver_data	= (unsigned long)&s3c244x_camif_drvdata,
-	}, {
-		.name		= "s3c6410-camif",
-		.driver_data	= (unsigned long)&s3c6410_camif_drvdata,
-	},
-	{ /* sentinel */ },
-};
-MODULE_DEVICE_TABLE(platform, s3c_camif_driver_ids);
-
-static const struct dev_pm_ops s3c_camif_pm_ops = {
-	.runtime_suspend	= s3c_camif_runtime_suspend,
-	.runtime_resume		= s3c_camif_runtime_resume,
-};
-
-static struct platform_driver s3c_camif_driver = {
-	.probe		= s3c_camif_probe,
-	.remove		= s3c_camif_remove,
-	.id_table	= s3c_camif_driver_ids,
-	.driver = {
-		.name	= S3C_CAMIF_DRIVER_NAME,
-		.pm	= &s3c_camif_pm_ops,
-	}
-};
-
-module_platform_driver(s3c_camif_driver);
-
-MODULE_AUTHOR("Sylwester Nawrocki <sylvester.nawrocki@gmail.com>");
-MODULE_AUTHOR("Tomasz Figa <tomasz.figa@gmail.com>");
-MODULE_DESCRIPTION("S3C24XX/S3C64XX SoC camera interface driver");
-MODULE_LICENSE("GPL");