[media] move i2c files into drivers/media/i2c

Move ancillary I2C drivers into drivers/media/i2c, in order to
better organize them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 460 insertions, 0 deletions

diff --git a/drivers/media/i2c/adv7175.c b/drivers/media/i2c/adv7175.c
new file mode 100644
index 000000000000..c7640fab5730
--- /dev/null
+++ b/drivers/media/i2c/adv7175.c
@@ -0,0 +1,460 @@
+/*
+ *  adv7175 - adv7175a video encoder driver version 0.0.3
+ *
+ * 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 (9/9/2002)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/ioctl.h>
+#include <asm/uaccess.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+
+MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
+MODULE_AUTHOR("Dave Perks");
+MODULE_LICENSE("GPL");
+
+#define   I2C_ADV7175        0xd4
+#define   I2C_ADV7176        0x54
+
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+/* ----------------------------------------------------------------------- */
+
+struct adv7175 {
+	struct v4l2_subdev sd;
+	v4l2_std_id norm;
+	int input;
+};
+
+static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct adv7175, sd);
+}
+
+static char *inputs[] = { "pass_through", "play_back", "color_bar" };
+
+static enum v4l2_mbus_pixelcode adv7175_codes[] = {
+	V4L2_MBUS_FMT_UYVY8_2X8,
+	V4L2_MBUS_FMT_UYVY8_1X16,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int adv7175_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 adv7175_write_block(struct v4l2_subdev *sd,
+		     const u8 *data, unsigned int len)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret = -1;
+	u8 reg;
+
+	/* the adv7175 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++] = data[1];
+				reg++;
+				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 = adv7175_write(sd, reg, *data++);
+			if (ret < 0)
+				break;
+			len -= 2;
+		}
+	}
+
+	return ret;
+}
+
+static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through)
+{
+	/* for some reason pass_through NTSC needs
+	 * a different sub-carrier freq to remain stable. */
+	if (pass_through)
+		adv7175_write(sd, 0x02, 0x00);
+	else
+		adv7175_write(sd, 0x02, 0x55);
+
+	adv7175_write(sd, 0x03, 0x55);
+	adv7175_write(sd, 0x04, 0x55);
+	adv7175_write(sd, 0x05, 0x25);
+}
+
+/* ----------------------------------------------------------------------- */
+/* Output filter:  S-Video  Composite */
+
+#define MR050       0x11	/* 0x09 */
+#define MR060       0x14	/* 0x0c */
+
+/* ----------------------------------------------------------------------- */
+
+#define TR0MODE     0x46
+#define TR0RST	    0x80
+
+#define TR1CAPT	    0x80
+#define TR1PLAY	    0x00
+
+static const unsigned char init_common[] = {
+
+	0x00, MR050,		/* MR0, PAL enabled */
+	0x01, 0x00,		/* MR1 */
+	0x02, 0x0c,		/* subc. freq. */
+	0x03, 0x8c,		/* subc. freq. */
+	0x04, 0x79,		/* subc. freq. */
+	0x05, 0x26,		/* subc. freq. */
+	0x06, 0x40,		/* subc. phase */
+
+	0x07, TR0MODE,		/* TR0, 16bit */
+	0x08, 0x21,		/*  */
+	0x09, 0x00,		/*  */
+	0x0a, 0x00,		/*  */
+	0x0b, 0x00,		/*  */
+	0x0c, TR1CAPT,		/* TR1 */
+	0x0d, 0x4f,		/* MR2 */
+	0x0e, 0x00,		/*  */
+	0x0f, 0x00,		/*  */
+	0x10, 0x00,		/*  */
+	0x11, 0x00,		/*  */
+};
+
+static const unsigned char init_pal[] = {
+	0x00, MR050,		/* MR0, PAL enabled */
+	0x01, 0x00,		/* MR1 */
+	0x02, 0x0c,		/* subc. freq. */
+	0x03, 0x8c,		/* subc. freq. */
+	0x04, 0x79,		/* subc. freq. */
+	0x05, 0x26,		/* subc. freq. */
+	0x06, 0x40,		/* subc. phase */
+};
+
+static const unsigned char init_ntsc[] = {
+	0x00, MR060,		/* MR0, NTSC enabled */
+	0x01, 0x00,		/* MR1 */
+	0x02, 0x55,		/* subc. freq. */
+	0x03, 0x55,		/* subc. freq. */
+	0x04, 0x55,		/* subc. freq. */
+	0x05, 0x25,		/* subc. freq. */
+	0x06, 0x1a,		/* subc. phase */
+};
+
+static int adv7175_init(struct v4l2_subdev *sd, u32 val)
+{
+	/* This is just for testing!!! */
+	adv7175_write_block(sd, init_common, sizeof(init_common));
+	adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+	adv7175_write(sd, 0x07, TR0MODE);
+	return 0;
+}
+
+static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+	struct adv7175 *encoder = to_adv7175(sd);
+
+	if (std & V4L2_STD_NTSC) {
+		adv7175_write_block(sd, init_ntsc, sizeof(init_ntsc));
+		if (encoder->input == 0)
+			adv7175_write(sd, 0x0d, 0x4f);	/* Enable genlock */
+		adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7175_write(sd, 0x07, TR0MODE);
+	} else if (std & V4L2_STD_PAL) {
+		adv7175_write_block(sd, init_pal, sizeof(init_pal));
+		if (encoder->input == 0)
+			adv7175_write(sd, 0x0d, 0x4f);	/* Enable genlock */
+		adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7175_write(sd, 0x07, TR0MODE);
+	} else if (std & V4L2_STD_SECAM) {
+		/* This is an attempt to convert
+		 * SECAM->PAL (typically it does not work
+		 * due to genlock: when decoder is in SECAM
+		 * and encoder in in PAL the subcarrier can
+		 * not be syncronized with horizontal
+		 * quency) */
+		adv7175_write_block(sd, init_pal, sizeof(init_pal));
+		if (encoder->input == 0)
+			adv7175_write(sd, 0x0d, 0x49);	/* Disable genlock */
+		adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7175_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 adv7175_s_routing(struct v4l2_subdev *sd,
+			     u32 input, u32 output, u32 config)
+{
+	struct adv7175 *encoder = to_adv7175(sd);
+
+	/* RJ: input = 0: input is from decoder
+	   input = 1: input is from ZR36060
+	   input = 2: color bar */
+
+	switch (input) {
+	case 0:
+		adv7175_write(sd, 0x01, 0x00);
+
+		if (encoder->norm & V4L2_STD_NTSC)
+			set_subcarrier_freq(sd, 1);
+
+		adv7175_write(sd, 0x0c, TR1CAPT);	/* TR1 */
+		if (encoder->norm & V4L2_STD_SECAM)
+			adv7175_write(sd, 0x0d, 0x49);	/* Disable genlock */
+		else
+			adv7175_write(sd, 0x0d, 0x4f);	/* Enable genlock */
+		adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7175_write(sd, 0x07, TR0MODE);
+		/*udelay(10);*/
+		break;
+
+	case 1:
+		adv7175_write(sd, 0x01, 0x00);
+
+		if (encoder->norm & V4L2_STD_NTSC)
+			set_subcarrier_freq(sd, 0);
+
+		adv7175_write(sd, 0x0c, TR1PLAY);	/* TR1 */
+		adv7175_write(sd, 0x0d, 0x49);
+		adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7175_write(sd, 0x07, TR0MODE);
+		/* udelay(10); */
+		break;
+
+	case 2:
+		adv7175_write(sd, 0x01, 0x80);
+
+		if (encoder->norm & V4L2_STD_NTSC)
+			set_subcarrier_freq(sd, 0);
+
+		adv7175_write(sd, 0x0d, 0x49);
+		adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		adv7175_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 adv7175_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+				enum v4l2_mbus_pixelcode *code)
+{
+	if (index >= ARRAY_SIZE(adv7175_codes))
+		return -EINVAL;
+
+	*code = adv7175_codes[index];
+	return 0;
+}
+
+static int adv7175_g_fmt(struct v4l2_subdev *sd,
+				struct v4l2_mbus_framefmt *mf)
+{
+	u8 val = adv7175_read(sd, 0x7);
+
+	if ((val & 0x40) == (1 << 6))
+		mf->code = V4L2_MBUS_FMT_UYVY8_1X16;
+	else
+		mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
+
+	mf->colorspace  = V4L2_COLORSPACE_SMPTE170M;
+	mf->width       = 0;
+	mf->height      = 0;
+	mf->field       = V4L2_FIELD_ANY;
+
+	return 0;
+}
+
+static int adv7175_s_fmt(struct v4l2_subdev *sd,
+				struct v4l2_mbus_framefmt *mf)
+{
+	u8 val = adv7175_read(sd, 0x7);
+	int ret;
+
+	switch (mf->code) {
+	case V4L2_MBUS_FMT_UYVY8_2X8:
+		val &= ~0x40;
+		break;
+
+	case V4L2_MBUS_FMT_UYVY8_1X16:
+		val |= 0x40;
+		break;
+
+	default:
+		v4l2_dbg(1, debug, sd,
+			"illegal v4l2_mbus_framefmt code: %d\n", mf->code);
+		return -EINVAL;
+	}
+
+	ret = adv7175_write(sd, 0x7, val);
+
+	return ret;
+}
+
+static int adv7175_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7175, 0);
+}
+
+static int adv7175_s_power(struct v4l2_subdev *sd, int on)
+{
+	if (on)
+		adv7175_write(sd, 0x01, 0x00);
+	else
+		adv7175_write(sd, 0x01, 0x78);
+
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops adv7175_core_ops = {
+	.g_chip_ident = adv7175_g_chip_ident,
+	.init = adv7175_init,
+	.s_power = adv7175_s_power,
+};
+
+static const struct v4l2_subdev_video_ops adv7175_video_ops = {
+	.s_std_output = adv7175_s_std_output,
+	.s_routing = adv7175_s_routing,
+	.s_mbus_fmt = adv7175_s_fmt,
+	.g_mbus_fmt = adv7175_g_fmt,
+	.enum_mbus_fmt  = adv7175_enum_fmt,
+};
+
+static const struct v4l2_subdev_ops adv7175_ops = {
+	.core = &adv7175_core_ops,
+	.video = &adv7175_video_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int adv7175_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	int i;
+	struct adv7175 *encoder;
+	struct v4l2_subdev *sd;
+
+	/* 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 = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
+	if (encoder == NULL)
+		return -ENOMEM;
+	sd = &encoder->sd;
+	v4l2_i2c_subdev_init(sd, client, &adv7175_ops);
+	encoder->norm = V4L2_STD_NTSC;
+	encoder->input = 0;
+
+	i = adv7175_write_block(sd, init_common, sizeof(init_common));
+	if (i >= 0) {
+		i = adv7175_write(sd, 0x07, TR0MODE | TR0RST);
+		i = adv7175_write(sd, 0x07, TR0MODE);
+		i = adv7175_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 int adv7175_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+	v4l2_device_unregister_subdev(sd);
+	kfree(to_adv7175(sd));
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct i2c_device_id adv7175_id[] = {
+	{ "adv7175", 0 },
+	{ "adv7176", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adv7175_id);
+
+static struct i2c_driver adv7175_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= "adv7175",
+	},
+	.probe		= adv7175_probe,
+	.remove		= adv7175_remove,
+	.id_table	= adv7175_id,
+};
+
+module_i2c_driver(adv7175_driver);