Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 412 insertions, 0 deletions

diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c
new file mode 100644
index 0000000000..b5f58dc6dd
--- /dev/null
+++ b/drivers/media/usb/em28xx/em28xx-camera.c
@@ -0,0 +1,412 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// em28xx-camera.c - driver for Empia EM25xx/27xx/28xx USB video capture devices
+//
+// Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@kernel.org>
+// Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com>
+
+#include "em28xx.h"
+
+#include <linux/i2c.h>
+#include <linux/usb.h>
+#include <media/i2c/mt9v011.h>
+#include <media/v4l2-common.h>
+
+/* Possible i2c addresses of Micron sensors */
+static unsigned short micron_sensor_addrs[] = {
+	0xb8 >> 1,   /* MT9V111, MT9V403 */
+	0xba >> 1,   /* MT9M001/011/111/112, MT9V011/012/112, MT9D011 */
+	0x90 >> 1,   /* MT9V012/112, MT9D011 (alternative address) */
+	I2C_CLIENT_END
+};
+
+/* Possible i2c addresses of Omnivision sensors */
+static unsigned short omnivision_sensor_addrs[] = {
+	0x42 >> 1,   /* OV7725, OV7670/60/48 */
+	0x60 >> 1,   /* OV2640, OV9650/53/55 */
+	I2C_CLIENT_END
+};
+
+/* FIXME: Should be replaced by a proper mt9m111 driver */
+static int em28xx_initialize_mt9m111(struct em28xx *dev)
+{
+	int i;
+	unsigned char regs[][3] = {
+		{ 0x0d, 0x00, 0x01, },  /* reset and use defaults */
+		{ 0x0d, 0x00, 0x00, },
+		{ 0x0a, 0x00, 0x21, },
+		{ 0x21, 0x04, 0x00, },  /* full readout spd, no row/col skip */
+	};
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				&regs[i][0], 3);
+
+	/* FIXME: This won't be creating a sensor at the media graph */
+
+	return 0;
+}
+
+/* FIXME: Should be replaced by a proper mt9m001 driver */
+static int em28xx_initialize_mt9m001(struct em28xx *dev)
+{
+	int i;
+	unsigned char regs[][3] = {
+		{ 0x0d, 0x00, 0x01, },
+		{ 0x0d, 0x00, 0x00, },
+		{ 0x04, 0x05, 0x00, },	/* hres = 1280 */
+		{ 0x03, 0x04, 0x00, },  /* vres = 1024 */
+		{ 0x20, 0x11, 0x00, },
+		{ 0x06, 0x00, 0x10, },
+		{ 0x2b, 0x00, 0x24, },
+		{ 0x2e, 0x00, 0x24, },
+		{ 0x35, 0x00, 0x24, },
+		{ 0x2d, 0x00, 0x20, },
+		{ 0x2c, 0x00, 0x20, },
+		{ 0x09, 0x0a, 0xd4, },
+		{ 0x35, 0x00, 0x57, },
+	};
+
+	for (i = 0; i < ARRAY_SIZE(regs); i++)
+		i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
+				&regs[i][0], 3);
+
+	/* FIXME: This won't be creating a sensor at the media graph */
+
+	return 0;
+}
+
+/*
+ * Probes Micron sensors with 8 bit address and 16 bit register width
+ */
+static int em28xx_probe_sensor_micron(struct em28xx *dev)
+{
+	int ret, i;
+	char *name;
+	u16 id;
+
+	struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+
+	dev->em28xx_sensor = EM28XX_NOSENSOR;
+	for (i = 0; micron_sensor_addrs[i] != I2C_CLIENT_END; i++) {
+		client->addr = micron_sensor_addrs[i];
+		/* Read chip ID from register 0x00 */
+		ret = i2c_smbus_read_word_data(client, 0x00); /* assumes LE */
+		if (ret < 0) {
+			if (ret != -ENXIO)
+				dev_err(&dev->intf->dev,
+					"couldn't read from i2c device 0x%02x: error %i\n",
+				       client->addr << 1, ret);
+			continue;
+		}
+		id = swab16(ret); /* LE -> BE */
+		/* Read chip ID from register 0xff */
+		ret = i2c_smbus_read_word_data(client, 0xff);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		/* Validate chip ID to be sure we have a Micron device */
+		if (id != swab16(ret))
+			continue;
+		/* Check chip ID */
+		switch (id) {
+		case 0x1222:
+			name = "MT9V012"; /* MI370 */ /* 640x480 */
+			break;
+		case 0x1229:
+			name = "MT9V112"; /* 640x480 */
+			break;
+		case 0x1433:
+			name = "MT9M011"; /* 1280x1024 */
+			break;
+		case 0x143a:    /* found in the ECS G200 */
+			name = "MT9M111"; /* MI1310 */ /* 1280x1024 */
+			dev->em28xx_sensor = EM28XX_MT9M111;
+			break;
+		case 0x148c:
+			name = "MT9M112"; /* MI1320 */ /* 1280x1024 */
+			break;
+		case 0x1511:
+			name = "MT9D011"; /* MI2010 */ /* 1600x1200 */
+			break;
+		case 0x8232:
+		case 0x8243:	/* rev B */
+			name = "MT9V011"; /* MI360 */ /* 640x480 */
+			dev->em28xx_sensor = EM28XX_MT9V011;
+			break;
+		case 0x8431:
+			name = "MT9M001"; /* 1280x1024 */
+			dev->em28xx_sensor = EM28XX_MT9M001;
+			break;
+		default:
+			dev_info(&dev->intf->dev,
+				 "unknown Micron sensor detected: 0x%04x\n",
+				 id);
+			return 0;
+		}
+
+		if (dev->em28xx_sensor == EM28XX_NOSENSOR)
+			dev_info(&dev->intf->dev,
+				 "unsupported sensor detected: %s\n", name);
+		else
+			dev_info(&dev->intf->dev,
+				 "sensor %s detected\n", name);
+
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
+/*
+ * Probes Omnivision sensors with 8 bit address and register width
+ */
+static int em28xx_probe_sensor_omnivision(struct em28xx *dev)
+{
+	int ret, i;
+	char *name;
+	u8 reg;
+	u16 id;
+	struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+
+	dev->em28xx_sensor = EM28XX_NOSENSOR;
+	/*
+	 * NOTE: these devices have the register auto incrementation disabled
+	 * by default, so we have to use single byte reads !
+	 */
+	for (i = 0; omnivision_sensor_addrs[i] != I2C_CLIENT_END; i++) {
+		client->addr = omnivision_sensor_addrs[i];
+		/* Read manufacturer ID from registers 0x1c-0x1d (BE) */
+		reg = 0x1c;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			if (ret != -ENXIO)
+				dev_err(&dev->intf->dev,
+					"couldn't read from i2c device 0x%02x: error %i\n",
+					client->addr << 1, ret);
+			continue;
+		}
+		id = ret << 8;
+		reg = 0x1d;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		id += ret;
+		/* Check manufacturer ID */
+		if (id != 0x7fa2)
+			continue;
+		/* Read product ID from registers 0x0a-0x0b (BE) */
+		reg = 0x0a;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		id = ret << 8;
+		reg = 0x0b;
+		ret = i2c_smbus_read_byte_data(client, reg);
+		if (ret < 0) {
+			dev_err(&dev->intf->dev,
+				"couldn't read from i2c device 0x%02x: error %i\n",
+				client->addr << 1, ret);
+			continue;
+		}
+		id += ret;
+		/* Check product ID */
+		switch (id) {
+		case 0x2642:
+			name = "OV2640";
+			dev->em28xx_sensor = EM28XX_OV2640;
+			break;
+		case 0x7648:
+			name = "OV7648";
+			break;
+		case 0x7660:
+			name = "OV7660";
+			break;
+		case 0x7673:
+			name = "OV7670";
+			break;
+		case 0x7720:
+			name = "OV7720";
+			break;
+		case 0x7721:
+			name = "OV7725";
+			break;
+		case 0x9648: /* Rev 2 */
+		case 0x9649: /* Rev 3 */
+			name = "OV9640";
+			break;
+		case 0x9650:
+		case 0x9652: /* OV9653 */
+			name = "OV9650";
+			break;
+		case 0x9656: /* Rev 4 */
+		case 0x9657: /* Rev 5 */
+			name = "OV9655";
+			break;
+		default:
+			dev_info(&dev->intf->dev,
+				 "unknown OmniVision sensor detected: 0x%04x\n",
+				id);
+			return 0;
+		}
+
+		if (dev->em28xx_sensor == EM28XX_NOSENSOR)
+			dev_info(&dev->intf->dev,
+				 "unsupported sensor detected: %s\n", name);
+		else
+			dev_info(&dev->intf->dev,
+				 "sensor %s detected\n", name);
+
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
+int em28xx_detect_sensor(struct em28xx *dev)
+{
+	int ret;
+
+	ret = em28xx_probe_sensor_micron(dev);
+
+	if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0)
+		ret = em28xx_probe_sensor_omnivision(dev);
+
+	/*
+	 * NOTE: the Windows driver also probes i2c addresses
+	 *       0x22 (Samsung ?) and 0x66 (Kodak ?)
+	 */
+
+	if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0) {
+		dev_info(&dev->intf->dev,
+			 "No sensor detected\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+int em28xx_init_camera(struct em28xx *dev)
+{
+	struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+	struct i2c_adapter *adap = &dev->i2c_adap[dev->def_i2c_bus];
+	struct em28xx_v4l2 *v4l2 = dev->v4l2;
+
+	switch (dev->em28xx_sensor) {
+	case EM28XX_MT9V011:
+	{
+		struct mt9v011_platform_data pdata;
+		struct i2c_board_info mt9v011_info = {
+			.type = "mt9v011",
+			.addr = client->addr,
+			.platform_data = &pdata,
+		};
+
+		v4l2->sensor_xres = 640;
+		v4l2->sensor_yres = 480;
+
+		/*
+		 * FIXME: mt9v011 uses I2S speed as xtal clk - at least with
+		 * the Silvercrest cam I have here for testing - for higher
+		 * resolutions, a high clock cause horizontal artifacts, so we
+		 * need to use a lower xclk frequency.
+		 * Yet, it would be possible to adjust xclk depending on the
+		 * desired resolution, since this affects directly the
+		 * frame rate.
+		 */
+		dev->board.xclk = EM28XX_XCLK_FREQUENCY_4_3MHZ;
+		em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
+		v4l2->sensor_xtal = 4300000;
+		pdata.xtal = v4l2->sensor_xtal;
+		if (NULL ==
+		    v4l2_i2c_new_subdev_board(&v4l2->v4l2_dev, adap,
+					      &mt9v011_info, NULL))
+			return -ENODEV;
+		v4l2->vinmode = EM28XX_VINMODE_RGB8_GRBG;
+		v4l2->vinctl = 0x00;
+
+		break;
+	}
+	case EM28XX_MT9M001:
+		v4l2->sensor_xres = 1280;
+		v4l2->sensor_yres = 1024;
+
+		em28xx_initialize_mt9m001(dev);
+
+		v4l2->vinmode = EM28XX_VINMODE_RGB8_BGGR;
+		v4l2->vinctl = 0x00;
+
+		break;
+	case EM28XX_MT9M111:
+		v4l2->sensor_xres = 640;
+		v4l2->sensor_yres = 512;
+
+		dev->board.xclk = EM28XX_XCLK_FREQUENCY_48MHZ;
+		em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
+		em28xx_initialize_mt9m111(dev);
+
+		v4l2->vinmode = EM28XX_VINMODE_YUV422_UYVY;
+		v4l2->vinctl = 0x00;
+
+		break;
+	case EM28XX_OV2640:
+	{
+		struct v4l2_subdev *subdev;
+		struct i2c_board_info ov2640_info = {
+			.type = "ov2640",
+			.flags = I2C_CLIENT_SCCB,
+			.addr = client->addr,
+		};
+		struct v4l2_subdev_format format = {
+			.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+		};
+
+		/*
+		 * FIXME: sensor supports resolutions up to 1600x1200, but
+		 * resolution setting/switching needs to be modified to
+		 * - switch sensor output resolution (including further
+		 *   configuration changes)
+		 * - adjust bridge xclk
+		 * - disable 16 bit (12 bit) output formats on high resolutions
+		 */
+		v4l2->sensor_xres = 640;
+		v4l2->sensor_yres = 480;
+
+		subdev =
+		     v4l2_i2c_new_subdev_board(&v4l2->v4l2_dev, adap,
+					       &ov2640_info, NULL);
+		if (!subdev)
+			return -ENODEV;
+
+		format.format.code = MEDIA_BUS_FMT_YUYV8_2X8;
+		format.format.width = 640;
+		format.format.height = 480;
+		v4l2_subdev_call(subdev, pad, set_fmt, NULL, &format);
+
+		/* NOTE: for UXGA=1600x1200 switch to 12MHz */
+		dev->board.xclk = EM28XX_XCLK_FREQUENCY_24MHZ;
+		em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
+		v4l2->vinmode = EM28XX_VINMODE_YUV422_YUYV;
+		v4l2->vinctl = 0x00;
+
+		break;
+	}
+	case EM28XX_NOSENSOR:
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(em28xx_init_camera);