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Diffstat (limited to 'drivers/media/i2c/adv7175.c')
-rw-r--r--drivers/media/i2c/adv7175.c451
1 files changed, 451 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv7175.c b/drivers/media/i2c/adv7175.c
new file mode 100644
index 000000000..b58689728
--- /dev/null
+++ b/drivers/media/i2c/adv7175.c
@@ -0,0 +1,451 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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)
+ */
+
+#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 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 u32 adv7175_codes[] = {
+ MEDIA_BUS_FMT_UYVY8_2X8,
+ MEDIA_BUS_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 synchronized 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_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(adv7175_codes))
+ return -EINVAL;
+
+ code->code = adv7175_codes[code->index];
+ return 0;
+}
+
+static int adv7175_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 = adv7175_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 adv7175_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 = adv7175_read(sd, 0x7);
+ int ret = 0;
+
+ 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)
+ ret = adv7175_write(sd, 0x7, val);
+
+ return ret;
+}
+
+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 = {
+ .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,
+};
+
+static const struct v4l2_subdev_pad_ops adv7175_pad_ops = {
+ .enum_mbus_code = adv7175_enum_mbus_code,
+ .get_fmt = adv7175_get_fmt,
+ .set_fmt = adv7175_set_fmt,
+};
+
+static const struct v4l2_subdev_ops adv7175_ops = {
+ .core = &adv7175_core_ops,
+ .video = &adv7175_video_ops,
+ .pad = &adv7175_pad_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 = devm_kzalloc(&client->dev, sizeof(*encoder), 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 void adv7175_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+}
+
+/* ----------------------------------------------------------------------- */
+
+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 = {
+ .name = "adv7175",
+ },
+ .probe = adv7175_probe,
+ .remove = adv7175_remove,
+ .id_table = adv7175_id,
+};
+
+module_i2c_driver(adv7175_driver);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 16:42:15 +0000