*/
#include <linux/module.h>
-#include <linux/delay.h>
#include <linux/types.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
-#include <linux/videodev.h>
-#include <linux/video_decoder.h>
-#include <media/v4l2-common.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
+static unsigned short normal_i2c[] = { 0x8a >> 1, I2C_CLIENT_END };
+
+I2C_CLIENT_INSMOD;
+
/* ----------------------------------------------------------------------- */
struct bt819 {
+ struct v4l2_subdev sd;
unsigned char reg[32];
- int initialized;
v4l2_std_id norm;
+ int ident;
int input;
int enable;
int bright;
int sat;
};
+static inline struct bt819 *to_bt819(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct bt819, sd);
+}
+
struct timing {
int hactive;
int hdelay;
/* ----------------------------------------------------------------------- */
-static inline int bt819_write(struct i2c_client *client, u8 reg, u8 value)
+static inline int bt819_write(struct bt819 *decoder, u8 reg, u8 value)
{
- struct bt819 *decoder = i2c_get_clientdata(client);
+ struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
decoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
-static inline int bt819_setbit(struct i2c_client *client, u8 reg, u8 bit, u8 value)
+static inline int bt819_setbit(struct bt819 *decoder, u8 reg, u8 bit, u8 value)
{
- struct bt819 *decoder = i2c_get_clientdata(client);
-
- return bt819_write(client, reg,
+ return bt819_write(decoder, reg,
(decoder->reg[reg] & ~(1 << bit)) | (value ? (1 << bit) : 0));
}
-static int bt819_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
+static int bt819_write_block(struct bt819 *decoder, const u8 *data, unsigned int len)
{
+ struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
int ret = -1;
u8 reg;
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
/* do raw I2C, not smbus compatible */
- struct bt819 *decoder = i2c_get_clientdata(client);
u8 block_data[32];
int block_len;
/* do some slow I2C emulation kind of thing */
while (len >= 2) {
reg = *data++;
- if ((ret = bt819_write(client, reg, *data++)) < 0)
+ ret = bt819_write(decoder, reg, *data++);
+ if (ret < 0)
break;
len -= 2;
}
return ret;
}
-static inline int bt819_read(struct i2c_client *client, u8 reg)
+static inline int bt819_read(struct bt819 *decoder, u8 reg)
{
+ struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
+
return i2c_smbus_read_byte_data(client, reg);
}
-static int bt819_init(struct i2c_client *client)
+static int bt819_init(struct v4l2_subdev *sd)
{
- struct bt819 *decoder = i2c_get_clientdata(client);
-
static unsigned char init[] = {
/*0x1f, 0x00,*/ /* Reset */
0x01, 0x59, /* 0x01 input format */
0x1a, 0x80, /* 0x1a ADC Interface */
};
+ struct bt819 *decoder = to_bt819(sd);
struct timing *timing = &timing_data[(decoder->norm & V4L2_STD_525_60) ? 1 : 0];
init[0x03 * 2 - 1] =
/* 0x15 in array is address 0x19 */
init[0x15 * 2 - 1] = (decoder->norm & V4L2_STD_625_50) ? 115 : 93; /* Chroma burst delay */
/* reset */
- bt819_write(client, 0x1f, 0x00);
+ bt819_write(decoder, 0x1f, 0x00);
mdelay(1);
/* init */
- return bt819_write_block(client, init, sizeof(init));
+ return bt819_write_block(decoder, init, sizeof(init));
}
/* ----------------------------------------------------------------------- */
-static int bt819_command(struct i2c_client *client, unsigned cmd, void *arg)
+static int bt819_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
{
- int temp;
+ struct bt819 *decoder = to_bt819(sd);
+ int status = bt819_read(decoder, 0x00);
+ int res = V4L2_IN_ST_NO_SIGNAL;
+ v4l2_std_id std;
+
+ if ((status & 0x80))
+ res = 0;
+
+ if ((status & 0x10))
+ std = V4L2_STD_PAL;
+ else
+ std = V4L2_STD_NTSC;
+ if (pstd)
+ *pstd = std;
+ if (pstatus)
+ *pstatus = status;
+
+ v4l2_dbg(1, debug, sd, "get status %x\n", status);
+ return 0;
+}
- struct bt819 *decoder = i2c_get_clientdata(client);
+static int bt819_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+ return bt819_status(sd, NULL, std);
+}
- if (!decoder->initialized) { /* First call to bt819_init could be */
- bt819_init(client); /* without #FRST = 0 */
- decoder->initialized = 1;
+static int bt819_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+ return bt819_status(sd, status, NULL);
+}
+
+static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+ struct bt819 *decoder = to_bt819(sd);
+ struct timing *timing = NULL;
+
+ v4l2_dbg(1, debug, sd, "set norm %llx\n", std);
+
+ if (std & V4L2_STD_NTSC) {
+ bt819_setbit(decoder, 0x01, 0, 1);
+ bt819_setbit(decoder, 0x01, 1, 0);
+ bt819_setbit(decoder, 0x01, 5, 0);
+ bt819_write(decoder, 0x18, 0x68);
+ bt819_write(decoder, 0x19, 0x5d);
+ /* bt819_setbit(decoder, 0x1a, 5, 1); */
+ timing = &timing_data[1];
+ } else if (std & V4L2_STD_PAL) {
+ bt819_setbit(decoder, 0x01, 0, 1);
+ bt819_setbit(decoder, 0x01, 1, 1);
+ bt819_setbit(decoder, 0x01, 5, 1);
+ bt819_write(decoder, 0x18, 0x7f);
+ bt819_write(decoder, 0x19, 0x72);
+ /* bt819_setbit(decoder, 0x1a, 5, 0); */
+ timing = &timing_data[0];
+ } else {
+ v4l2_dbg(1, debug, sd, "unsupported norm %llx\n", std);
+ return -EINVAL;
}
+ bt819_write(decoder, 0x03,
+ (((timing->vdelay >> 8) & 0x03) << 6) |
+ (((timing->vactive >> 8) & 0x03) << 4) |
+ (((timing->hdelay >> 8) & 0x03) << 2) |
+ ((timing->hactive >> 8) & 0x03));
+ bt819_write(decoder, 0x04, timing->vdelay & 0xff);
+ bt819_write(decoder, 0x05, timing->vactive & 0xff);
+ bt819_write(decoder, 0x06, timing->hdelay & 0xff);
+ bt819_write(decoder, 0x07, timing->hactive & 0xff);
+ bt819_write(decoder, 0x08, (timing->hscale >> 8) & 0xff);
+ bt819_write(decoder, 0x09, timing->hscale & 0xff);
+ decoder->norm = std;
+ return 0;
+}
- switch (cmd) {
- case VIDIOC_INT_INIT:
- /* This is just for testing!!! */
- bt819_init(client);
- break;
+static int bt819_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
+{
+ struct bt819 *decoder = to_bt819(sd);
- case VIDIOC_QUERYSTD:
- case VIDIOC_INT_G_INPUT_STATUS: {
- int *iarg = arg;
- v4l2_std_id *istd = arg;
- int status;
- int res = V4L2_IN_ST_NO_SIGNAL;
- v4l2_std_id std;
-
- status = bt819_read(client, 0x00);
- if ((status & 0x80))
- res = 0;
-
- if ((status & 0x10))
- std = V4L2_STD_PAL;
- else
- std = V4L2_STD_NTSC;
- if (cmd == VIDIOC_QUERYSTD)
- *istd = std;
- else
- *iarg = res;
-
- v4l_dbg(1, debug, client, "get status %x\n", *iarg);
- break;
- }
+ v4l2_dbg(1, debug, sd, "set input %x\n", route->input);
- case VIDIOC_S_STD:
- {
- v4l2_std_id *iarg = arg;
- struct timing *timing = NULL;
-
- v4l_dbg(1, debug, client, "set norm %llx\n", *iarg);
-
- if (*iarg & V4L2_STD_NTSC) {
- bt819_setbit(client, 0x01, 0, 1);
- bt819_setbit(client, 0x01, 1, 0);
- bt819_setbit(client, 0x01, 5, 0);
- bt819_write(client, 0x18, 0x68);
- bt819_write(client, 0x19, 0x5d);
- /* bt819_setbit(client, 0x1a, 5, 1); */
- timing = &timing_data[1];
- } else if (*iarg & V4L2_STD_PAL) {
- bt819_setbit(client, 0x01, 0, 1);
- bt819_setbit(client, 0x01, 1, 1);
- bt819_setbit(client, 0x01, 5, 1);
- bt819_write(client, 0x18, 0x7f);
- bt819_write(client, 0x19, 0x72);
- /* bt819_setbit(client, 0x1a, 5, 0); */
- timing = &timing_data[0];
- } else {
- v4l_dbg(1, debug, client, "unsupported norm %llx\n", *iarg);
- return -EINVAL;
- }
-/* case VIDEO_MODE_AUTO:
- bt819_setbit(client, 0x01, 0, 0);
- bt819_setbit(client, 0x01, 1, 0);*/
-
- bt819_write(client, 0x03,
- (((timing->vdelay >> 8) & 0x03) << 6) |
- (((timing->vactive >> 8) & 0x03) << 4) |
- (((timing->hdelay >> 8) & 0x03) << 2) |
- ((timing->hactive >> 8) & 0x03));
- bt819_write(client, 0x04, timing->vdelay & 0xff);
- bt819_write(client, 0x05, timing->vactive & 0xff);
- bt819_write(client, 0x06, timing->hdelay & 0xff);
- bt819_write(client, 0x07, timing->hactive & 0xff);
- bt819_write(client, 0x08, (timing->hscale >> 8) & 0xff);
- bt819_write(client, 0x09, timing->hscale & 0xff);
- decoder->norm = *iarg;
- break;
- }
+ if (route->input < 0 || route->input > 7)
+ return -EINVAL;
- case VIDIOC_INT_S_VIDEO_ROUTING:
- {
- struct v4l2_routing *route = arg;
-
- v4l_dbg(1, debug, client, "set input %x\n", route->input);
-
- if (route->input < 0 || route->input > 7)
- return -EINVAL;
-
- if (decoder->input != route->input) {
- decoder->input = route->input;
- /* select mode */
- if (decoder->input == 0) {
- bt819_setbit(client, 0x0b, 6, 0);
- bt819_setbit(client, 0x1a, 1, 1);
- } else {
- bt819_setbit(client, 0x0b, 6, 1);
- bt819_setbit(client, 0x1a, 1, 0);
- }
+ if (decoder->input != route->input) {
+ decoder->input = route->input;
+ /* select mode */
+ if (decoder->input == 0) {
+ bt819_setbit(decoder, 0x0b, 6, 0);
+ bt819_setbit(decoder, 0x1a, 1, 1);
+ } else {
+ bt819_setbit(decoder, 0x0b, 6, 1);
+ bt819_setbit(decoder, 0x1a, 1, 0);
}
- break;
}
+ return 0;
+}
- case VIDIOC_STREAMON:
- case VIDIOC_STREAMOFF:
- {
- int enable = cmd == VIDIOC_STREAMON;
+static int bt819_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct bt819 *decoder = to_bt819(sd);
- v4l_dbg(1, debug, client, "enable output %x\n", enable);
+ v4l2_dbg(1, debug, sd, "enable output %x\n", enable);
- if (decoder->enable != enable) {
- decoder->enable = enable;
- bt819_setbit(client, 0x16, 7, !enable);
- }
- break;
+ if (decoder->enable != enable) {
+ decoder->enable = enable;
+ bt819_setbit(decoder, 0x16, 7, !enable);
}
+ return 0;
+}
- case VIDIOC_QUERYCTRL:
- {
- struct v4l2_queryctrl *qc = arg;
-
- switch (qc->id) {
- case V4L2_CID_BRIGHTNESS:
- v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
- break;
-
- case V4L2_CID_CONTRAST:
- v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
- break;
+static int bt819_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
+{
+ switch (qc->id) {
+ case V4L2_CID_BRIGHTNESS:
+ v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
+ break;
- case V4L2_CID_SATURATION:
- v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
- break;
+ case V4L2_CID_CONTRAST:
+ v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
+ break;
- case V4L2_CID_HUE:
- v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
- break;
+ case V4L2_CID_SATURATION:
+ v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
+ break;
- default:
- return -EINVAL;
- }
+ case V4L2_CID_HUE:
+ v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
break;
+
+ default:
+ return -EINVAL;
}
+ return 0;
+}
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
+static int bt819_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct bt819 *decoder = to_bt819(sd);
+ int temp;
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- if (decoder->bright != ctrl->value) {
- decoder->bright = ctrl->value;
- bt819_write(client, 0x0a, decoder->bright);
- }
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ if (decoder->bright == ctrl->value)
break;
+ decoder->bright = ctrl->value;
+ bt819_write(decoder, 0x0a, decoder->bright);
+ break;
- case V4L2_CID_CONTRAST:
- if (decoder->contrast != ctrl->value) {
- decoder->contrast = ctrl->value;
- bt819_write(client, 0x0c,
- decoder->contrast & 0xff);
- bt819_setbit(client, 0x0b, 2,
- ((decoder->contrast >> 8) & 0x01));
- }
+ case V4L2_CID_CONTRAST:
+ if (decoder->contrast == ctrl->value)
break;
+ decoder->contrast = ctrl->value;
+ bt819_write(decoder, 0x0c, decoder->contrast & 0xff);
+ bt819_setbit(decoder, 0x0b, 2, ((decoder->contrast >> 8) & 0x01));
+ break;
- case V4L2_CID_SATURATION:
- if (decoder->sat != ctrl->value) {
- decoder->sat = ctrl->value;
- bt819_write(client, 0x0d,
- (decoder->sat >> 7) & 0xff);
- bt819_setbit(client, 0x0b, 1,
- ((decoder->sat >> 15) & 0x01));
-
- /* Ratio between U gain and V gain must stay the same as
- the ratio between the default U and V gain values. */
- temp = (decoder->sat * 180) / 254;
- bt819_write(client, 0x0e, (temp >> 7) & 0xff);
- bt819_setbit(client, 0x0b, 0, (temp >> 15) & 0x01);
- }
+ case V4L2_CID_SATURATION:
+ if (decoder->sat == ctrl->value)
break;
+ decoder->sat = ctrl->value;
+ bt819_write(decoder, 0x0d, (decoder->sat >> 7) & 0xff);
+ bt819_setbit(decoder, 0x0b, 1, ((decoder->sat >> 15) & 0x01));
+
+ /* Ratio between U gain and V gain must stay the same as
+ the ratio between the default U and V gain values. */
+ temp = (decoder->sat * 180) / 254;
+ bt819_write(decoder, 0x0e, (temp >> 7) & 0xff);
+ bt819_setbit(decoder, 0x0b, 0, (temp >> 15) & 0x01);
+ break;
- case V4L2_CID_HUE:
- if (decoder->hue != ctrl->value) {
- decoder->hue = ctrl->value;
- bt819_write(client, 0x0f, decoder->hue);
- }
+ case V4L2_CID_HUE:
+ if (decoder->hue == ctrl->value)
break;
- default:
- return -EINVAL;
- }
+ decoder->hue = ctrl->value;
+ bt819_write(decoder, 0x0f, decoder->hue);
break;
+
+ default:
+ return -EINVAL;
}
+ return 0;
+}
- case VIDIOC_G_CTRL:
- {
- struct v4l2_control *ctrl = arg;
+static int bt819_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct bt819 *decoder = to_bt819(sd);
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- ctrl->value = decoder->bright;
- break;
- case V4L2_CID_CONTRAST:
- ctrl->value = decoder->contrast;
- break;
- case V4L2_CID_SATURATION:
- ctrl->value = decoder->sat;
- break;
- case V4L2_CID_HUE:
- ctrl->value = decoder->hue;
- break;
- default:
- return -EINVAL;
- }
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->value = decoder->bright;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctrl->value = decoder->contrast;
+ break;
+ case V4L2_CID_SATURATION:
+ ctrl->value = decoder->sat;
+ break;
+ case V4L2_CID_HUE:
+ ctrl->value = decoder->hue;
break;
- }
-
default:
return -EINVAL;
}
-
return 0;
}
+static int bt819_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+ struct bt819 *decoder = to_bt819(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
+}
+
+static int bt819_command(struct i2c_client *client, unsigned cmd, void *arg)
+{
+ return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
+}
+
/* ----------------------------------------------------------------------- */
-static unsigned short normal_i2c[] = { 0x8a >> 1, I2C_CLIENT_END };
+static const struct v4l2_subdev_core_ops bt819_core_ops = {
+ .g_chip_ident = bt819_g_chip_ident,
+ .g_ctrl = bt819_g_ctrl,
+ .s_ctrl = bt819_s_ctrl,
+ .queryctrl = bt819_queryctrl,
+};
-I2C_CLIENT_INSMOD;
+static const struct v4l2_subdev_tuner_ops bt819_tuner_ops = {
+ .s_std = bt819_s_std,
+};
+
+static const struct v4l2_subdev_video_ops bt819_video_ops = {
+ .s_routing = bt819_s_routing,
+ .s_stream = bt819_s_stream,
+ .querystd = bt819_querystd,
+ .g_input_status = bt819_g_input_status,
+};
+
+static const struct v4l2_subdev_ops bt819_ops = {
+ .core = &bt819_core_ops,
+ .tuner = &bt819_tuner_ops,
+ .video = &bt819_video_ops,
+};
+
+/* ----------------------------------------------------------------------- */
static int bt819_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int i, ver;
struct bt819 *decoder;
+ struct v4l2_subdev *sd;
const char *name;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- ver = bt819_read(client, 0x17);
+ decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
+ if (decoder == NULL)
+ return -ENOMEM;
+ sd = &decoder->sd;
+ v4l2_i2c_subdev_init(sd, client, &bt819_ops);
+
+ ver = bt819_read(decoder, 0x17);
switch (ver & 0xf0) {
case 0x70:
name = "bt819a";
+ decoder->ident = V4L2_IDENT_BT819A;
break;
case 0x60:
name = "bt817a";
+ decoder->ident = V4L2_IDENT_BT817A;
break;
case 0x20:
name = "bt815a";
+ decoder->ident = V4L2_IDENT_BT815A;
break;
default:
- v4l_dbg(1, debug, client,
+ v4l2_dbg(1, debug, sd,
"unknown chip version 0x%02x\n", ver);
return -ENODEV;
}
v4l_info(client, "%s found @ 0x%x (%s)\n", name,
client->addr << 1, client->adapter->name);
- decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
- if (decoder == NULL)
- return -ENOMEM;
decoder->norm = V4L2_STD_NTSC;
decoder->input = 0;
decoder->enable = 1;
decoder->bright = 0;
decoder->contrast = 0xd8; /* 100% of original signal */
decoder->hue = 0;
- decoder->sat = 0xfe; /* 100% of original signal */
- decoder->initialized = 0;
- i2c_set_clientdata(client, decoder);
+ decoder->sat = 0xfe; /* 100% of original signal */
- i = bt819_init(client);
+ i = bt819_init(sd);
if (i < 0)
- v4l_dbg(1, debug, client, "init status %d\n", i);
+ v4l2_dbg(1, debug, sd, "init status %d\n", i);
return 0;
}
static int bt819_remove(struct i2c_client *client)
{
- kfree(i2c_get_clientdata(client));
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_bt819(sd));
return 0;
}
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff