1 files changed, 395 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv7170.c b/drivers/media/i2c/adv7170.c
new file mode 100644
index 0000000000..4a2b9fd9e2
--- /dev/null
+++ b/drivers/media/i2c/adv7170.c
@@ -0,0 +1,395 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1
+ *
+ * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
+ *
+ * Based on adv7176 driver by:
+ *
+ * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+ * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
+ * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
+ *    - some corrections for Pinnacle Systems Inc. DC10plus card.
+ *
+ * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/ioctl.h>
+#include <linux/uaccess.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+
+MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
+MODULE_AUTHOR("Maxim Yevtyushkin");
+MODULE_LICENSE("GPL");
+
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+/* ----------------------------------------------------------------------- */
+
+struct adv7170 {
+	struct v4l2_subdev sd;
+	unsigned char reg[128];
+
+	v4l2_std_id norm;
+	int input;
+};
+
+static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct adv7170, sd);
+}
+
+static char *inputs[] = { "pass_through", "play_back" };
+
+static u32 adv7170_codes[] = {
+	MEDIA_BUS_FMT_UYVY8_2X8,
+	MEDIA_BUS_FMT_UYVY8_1X16,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct adv7170 *encoder = to_adv7170(sd);
+
+	encoder->reg[reg] = value;
+	return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int adv7170_write_block(struct v4l2_subdev *sd,
+		     const u8 *data, unsigned int len)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct adv7170 *encoder = to_adv7170(sd);
+	int ret = -1;
+	u8 reg;
+
+	/* the adv7170 has an autoincrement function, use it if
+	 * the adapter understands raw I2C */
+	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+		/* do raw I2C, not smbus compatible */
+		u8 block_data[32];
+		int block_len;
+
+		while (len >= 2) {
+			block_len = 0;
+			block_data[block_len++] = reg = data[0];
+			do {
+				block_data[block_len++] =
+				    encoder->reg[reg++] = data[1];
+				len -= 2;
+				data += 2;
+			} while (len >= 2 && data[0] == reg && block_len < 32);
+			ret = i2c_master_send(client, block_data, block_len);
+			if (ret < 0)
+				break;
+		}
+	} else {
+		/* do some slow I2C emulation kind of thing */
+		while (len >= 2) {
+			reg = *data++;
+			ret = adv7170_write(sd, reg, *data++);
+			if (ret < 0)
+				break;
+			len -= 2;
+		}
+	}
+	return ret;
+}
+
+/* ----------------------------------------------------------------------- */
+
+#define TR0MODE     0x4c
+#define TR0RST	    0x80
+
+#define TR1CAPT	    0x00
+#define TR1PLAY	    0x00
+
+static const unsigned char init_NTSC[] = {
+	0x00, 0x10,		/* MR0 */
+	0x01, 0x20,		/* MR1 */
+	0x02, 0x0e,		/* MR2 RTC control: bits 2 and 1 */
+	0x03, 0x80,		/* MR3 */
+	0x04, 0x30,		/* MR4 */
+	0x05, 0x00,		/* Reserved */
+	0x06, 0x00,		/* Reserved */
+	0x07, TR0MODE,		/* TM0 */
+	0x08, TR1CAPT,		/* TM1 */
+	0x09, 0x16,		/* Fsc0 */
+	0x0a, 0x7c,		/* Fsc1 */
+	0x0b, 0xf0,		/* Fsc2 */
+	0x0c, 0x21,		/* Fsc3 */
+	0x0d, 0x00,		/* Subcarrier Phase */
+	0x0e, 0x00,		/* Closed Capt. Ext 0 */
+	0x0f, 0x00,		/* Closed Capt. Ext 1 */
+	0x10, 0x00,		/* Closed Capt. 0 */
+	0x11, 0x00,		/* Closed Capt. 1 */
+	0x12, 0x00,		/* Pedestal Ctl 0 */
+	0x13, 0x00,		/* Pedestal Ctl 1 */
+	0x14, 0x00,		/* Pedestal Ctl 2 */
+	0x15, 0x00,		/* Pedestal Ctl 3 */
+	0x16, 0x00,		/* CGMS_WSS_0 */
+	0x17, 0x00,		/* CGMS_WSS_1 */
+	0x18, 0x00,		/* CGMS_WSS_2 */
+	0x19, 0x00,		/* Teletext Ctl */
+};
+
+static const unsigned char init_PAL[] = {
+	0x00, 0x71,		/* MR0 */
+	0x01, 0x20,		/* MR1 */
+	0x02, 0x0e,		/* MR2 RTC control: bits 2 and 1 */
+	0x03, 0x80,		/* MR3 */
+	0x04, 0x30,		/* MR4 */
+	0x05, 0x00,		/* Reserved */
+	0x06, 0x00,		/* Reserved */
+	0x07, TR0MODE,		/* TM0 */
+	0x08, TR1CAPT,		/* TM1 */
+	0x09, 0xcb,		/* Fsc0 */
+	0x0a, 0x8a,		/* Fsc1 */
+	0x0b, 0x09,		/* Fsc2 */
+	0x0c, 0x2a,		/* Fsc3 */
+	0x0d, 0x00,		/* Subcarrier Phase */
+	0x0e, 0x00,		/* Closed Capt. Ext 0 */
+	0x0f, 0x00,		/* Closed Capt. Ext 1 */
+	0x10, 0x00,		/* Closed Capt. 0 */
+	0x11, 0x00,		/* Closed Capt. 1 */
+	0x12, 0x00,		/* Pedestal Ctl 0 */
+	0x13, 0x00,		/* Pedestal Ctl 1 */
+	0x14, 0x00,		/* Pedestal Ctl 2 */
+	0x15, 0x00,		/* Pedestal Ctl 3 */
+	0x16, 0x00,		/* CGMS_WSS_0 */
+	0x17, 0x00,		/* CGMS_WSS_1 */
+	0x18, 0x00,		/* CGMS_WSS_2 */
+	0x19, 0x00,		/* Teletext Ctl */
+};
+
+
+static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+	struct adv7170 *encoder = to_adv7170(sd);
+
+	v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
+
+	if (std & V4L2_STD_NTSC) {
+		adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
+		if (encoder->input == 0)
+			adv7170_write(sd, 0x02, 0x0e);	/* Enable genlock */
+		adv7170_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7170_write(sd, 0x07, TR0MODE);
+	} else if (std & V4L2_STD_PAL) {
+		adv7170_write_block(sd, init_PAL, sizeof(init_PAL));
+		if (encoder->input == 0)
+			adv7170_write(sd, 0x02, 0x0e);	/* Enable genlock */
+		adv7170_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7170_write(sd, 0x07, TR0MODE);
+	} else {
+		v4l2_dbg(1, debug, sd, "illegal norm: %llx\n",
+				(unsigned long long)std);
+		return -EINVAL;
+	}
+	v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std);
+	encoder->norm = std;
+	return 0;
+}
+
+static int adv7170_s_routing(struct v4l2_subdev *sd,
+			     u32 input, u32 output, u32 config)
+{
+	struct adv7170 *encoder = to_adv7170(sd);
+
+	/* RJ: input = 0: input is from decoder
+	   input = 1: input is from ZR36060
+	   input = 2: color bar */
+
+	v4l2_dbg(1, debug, sd, "set input from %s\n",
+			input == 0 ? "decoder" : "ZR36060");
+
+	switch (input) {
+	case 0:
+		adv7170_write(sd, 0x01, 0x20);
+		adv7170_write(sd, 0x08, TR1CAPT);	/* TR1 */
+		adv7170_write(sd, 0x02, 0x0e);	/* Enable genlock */
+		adv7170_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7170_write(sd, 0x07, TR0MODE);
+		/* udelay(10); */
+		break;
+
+	case 1:
+		adv7170_write(sd, 0x01, 0x00);
+		adv7170_write(sd, 0x08, TR1PLAY);	/* TR1 */
+		adv7170_write(sd, 0x02, 0x08);
+		adv7170_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7170_write(sd, 0x07, TR0MODE);
+		/* udelay(10); */
+		break;
+
+	default:
+		v4l2_dbg(1, debug, sd, "illegal input: %d\n", input);
+		return -EINVAL;
+	}
+	v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]);
+	encoder->input = input;
+	return 0;
+}
+
+static int adv7170_enum_mbus_code(struct v4l2_subdev *sd,
+		struct v4l2_subdev_state *sd_state,
+		struct v4l2_subdev_mbus_code_enum *code)
+{
+	if (code->pad || code->index >= ARRAY_SIZE(adv7170_codes))
+		return -EINVAL;
+
+	code->code = adv7170_codes[code->index];
+	return 0;
+}
+
+static int adv7170_get_fmt(struct v4l2_subdev *sd,
+		struct v4l2_subdev_state *sd_state,
+		struct v4l2_subdev_format *format)
+{
+	struct v4l2_mbus_framefmt *mf = &format->format;
+	u8 val = adv7170_read(sd, 0x7);
+
+	if (format->pad)
+		return -EINVAL;
+
+	if ((val & 0x40) == (1 << 6))
+		mf->code = MEDIA_BUS_FMT_UYVY8_1X16;
+	else
+		mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
+
+	mf->colorspace  = V4L2_COLORSPACE_SMPTE170M;
+	mf->width       = 0;
+	mf->height      = 0;
+	mf->field       = V4L2_FIELD_ANY;
+
+	return 0;
+}
+
+static int adv7170_set_fmt(struct v4l2_subdev *sd,
+		struct v4l2_subdev_state *sd_state,
+		struct v4l2_subdev_format *format)
+{
+	struct v4l2_mbus_framefmt *mf = &format->format;
+	u8 val = adv7170_read(sd, 0x7);
+
+	if (format->pad)
+		return -EINVAL;
+
+	switch (mf->code) {
+	case MEDIA_BUS_FMT_UYVY8_2X8:
+		val &= ~0x40;
+		break;
+
+	case MEDIA_BUS_FMT_UYVY8_1X16:
+		val |= 0x40;
+		break;
+
+	default:
+		v4l2_dbg(1, debug, sd,
+			"illegal v4l2_mbus_framefmt code: %d\n", mf->code);
+		return -EINVAL;
+	}
+
+	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+		return adv7170_write(sd, 0x7, val);
+
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_video_ops adv7170_video_ops = {
+	.s_std_output = adv7170_s_std_output,
+	.s_routing = adv7170_s_routing,
+};
+
+static const struct v4l2_subdev_pad_ops adv7170_pad_ops = {
+	.enum_mbus_code = adv7170_enum_mbus_code,
+	.get_fmt = adv7170_get_fmt,
+	.set_fmt = adv7170_set_fmt,
+};
+
+static const struct v4l2_subdev_ops adv7170_ops = {
+	.video = &adv7170_video_ops,
+	.pad = &adv7170_pad_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int adv7170_probe(struct i2c_client *client)
+{
+	struct adv7170 *encoder;
+	struct v4l2_subdev *sd;
+	int i;
+
+	/* Check if the adapter supports the needed features */
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -ENODEV;
+
+	v4l_info(client, "chip found @ 0x%x (%s)\n",
+			client->addr << 1, client->adapter->name);
+
+	encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
+	if (encoder == NULL)
+		return -ENOMEM;
+	sd = &encoder->sd;
+	v4l2_i2c_subdev_init(sd, client, &adv7170_ops);
+	encoder->norm = V4L2_STD_NTSC;
+	encoder->input = 0;
+
+	i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
+	if (i >= 0) {
+		i = adv7170_write(sd, 0x07, TR0MODE | TR0RST);
+		i = adv7170_write(sd, 0x07, TR0MODE);
+		i = adv7170_read(sd, 0x12);
+		v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
+	}
+	if (i < 0)
+		v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
+	return 0;
+}
+
+static void adv7170_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+	v4l2_device_unregister_subdev(sd);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct i2c_device_id adv7170_id[] = {
+	{ "adv7170", 0 },
+	{ "adv7171", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adv7170_id);
+
+static struct i2c_driver adv7170_driver = {
+	.driver = {
+		.name	= "adv7170",
+	},
+	.probe		= adv7170_probe,
+	.remove		= adv7170_remove,
+	.id_table	= adv7170_id,
+};
+
+module_i2c_driver(adv7170_driver);