--- /dev/null
+/*
+ * 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)
+ *
+ * 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>
+
+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_fmt(struct v4l2_subdev *sd, unsigned int index,
+ u32 *code)
+{
+ if (index >= ARRAY_SIZE(adv7170_codes))
+ return -EINVAL;
+
+ *code = adv7170_codes[index];
+ return 0;
+}
+
+static int adv7170_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ u8 val = adv7170_read(sd, 0x7);
+
+ 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_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ u8 val = adv7170_read(sd, 0x7);
+ int ret;
+
+ 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;
+ }
+
+ ret = adv7170_write(sd, 0x7, val);
+
+ return ret;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_video_ops adv7170_video_ops = {
+ .s_std_output = adv7170_s_std_output,
+ .s_routing = adv7170_s_routing,
+ .s_mbus_fmt = adv7170_s_fmt,
+ .g_mbus_fmt = adv7170_g_fmt,
+ .enum_mbus_fmt = adv7170_enum_fmt,
+};
+
+static const struct v4l2_subdev_ops adv7170_ops = {
+ .video = &adv7170_video_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static int adv7170_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ 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 int adv7170_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+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 = {
+ .owner = THIS_MODULE,
+ .name = "adv7170",
+ },
+ .probe = adv7170_probe,
+ .remove = adv7170_remove,
+ .id_table = adv7170_id,
+};
+
+module_i2c_driver(adv7170_driver);
Code Review / kvmfornfv.git / blobdiff