#include <linux/videodev2.h>
#include <linux/ioctl.h>
#include <linux/slab.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-device.h>
#include "wis-i2c.h"
struct wis_tw2804 {
- int channel;
+ struct v4l2_subdev sd;
+ u8 channel:2;
+ u8 input:1;
+ u8 update:1;
+ u8 auto_gain:1;
+ u8 ckil:1;
int norm;
- int brightness;
- int contrast;
- int saturation;
- int hue;
+ u8 brightness;
+ u8 contrast;
+ u8 saturation;
+ u8 hue;
+ u8 gain;
+ u8 cr_gain;
+ u8 r_balance;
+ u8 b_balance;
};
static u8 global_registers[] = {
0x3d, 0x80,
0x3e, 0x82,
0x3f, 0x82,
+ 0x78, 0x0f,
0xff, 0xff, /* Terminator (reg 0xff does not exist) */
};
0xff, 0xff, /* Terminator (reg 0xff does not exist) */
};
-static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel)
+static s32 write_reg(struct i2c_client *client, u8 reg, u8 value, u8 channel)
{
return i2c_smbus_write_byte_data(client, reg | (channel << 6), value);
}
-static int write_regs(struct i2c_client *client, u8 *regs, int channel)
+static int write_regs(struct i2c_client *client, u8 *regs, u8 channel)
{
int i;
for (i = 0; regs[i] != 0xff; i += 2)
if (i2c_smbus_write_byte_data(client,
regs[i] | (channel << 6), regs[i + 1]) < 0)
- return -1;
+ return -EINVAL;
return 0;
}
+static s32 read_reg(struct i2c_client *client, u8 reg, u8 channel)
+{
+ return i2c_smbus_read_byte_data(client, (reg) | (channel << 6));
+}
+
+static inline struct wis_tw2804 *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct wis_tw2804, sd);
+}
+
+static int tw2804_log_status(struct v4l2_subdev *sd)
+{
+ struct wis_tw2804 *state = to_state(sd);
+ v4l2_info(sd, "Standard: %s\n", state->norm == V4L2_STD_NTSC ? "NTSC" :
+ state->norm == V4L2_STD_PAL ? "PAL" : "unknown");
+ v4l2_info(sd, "Channel: %d\n", state->channel);
+ v4l2_info(sd, "Input: %d\n", state->input);
+ v4l2_info(sd, "Brightness: %d\n", state->brightness);
+ v4l2_info(sd, "Contrast: %d\n", state->contrast);
+ v4l2_info(sd, "Saturation: %d\n", state->saturation);
+ v4l2_info(sd, "Hue: %d\n", state->hue);
+ return 0;
+}
+
+static int tw2804_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *query)
+{
+ static const u32 user_ctrls[] = {
+ V4L2_CID_USER_CLASS,
+ V4L2_CID_BRIGHTNESS,
+ V4L2_CID_CONTRAST,
+ V4L2_CID_SATURATION,
+ V4L2_CID_HUE,
+ V4L2_CID_AUTOGAIN,
+ V4L2_CID_COLOR_KILLER,
+ V4L2_CID_GAIN,
+ V4L2_CID_CHROMA_GAIN,
+ V4L2_CID_BLUE_BALANCE,
+ V4L2_CID_RED_BALANCE,
+ 0
+ };
+
+ static const u32 *ctrl_classes[] = {
+ user_ctrls,
+ NULL
+ };
+
+ query->id = v4l2_ctrl_next(ctrl_classes, query->id);
+
+ switch (query->id) {
+ case V4L2_CID_USER_CLASS:
+ return v4l2_ctrl_query_fill(query, 0, 0, 0, 0);
+ case V4L2_CID_BRIGHTNESS:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 128);
+ case V4L2_CID_CONTRAST:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 128);
+ case V4L2_CID_SATURATION:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 128);
+ case V4L2_CID_HUE:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 128);
+ case V4L2_CID_AUTOGAIN:
+ return v4l2_ctrl_query_fill(query, 0, 1, 1, 0);
+ case V4L2_CID_COLOR_KILLER:
+ return v4l2_ctrl_query_fill(query, 0, 1, 1, 0);
+ case V4L2_CID_GAIN:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 128);
+ case V4L2_CID_CHROMA_GAIN:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 128);
+ case V4L2_CID_BLUE_BALANCE:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 122);
+ case V4L2_CID_RED_BALANCE:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 122);
+ default:
+ return -EINVAL;
+ }
+}
+
+s32 get_ctrl_addr(int ctrl)
+{
+ switch (ctrl) {
+ case V4L2_CID_BRIGHTNESS:
+ return 0x12;
+ case V4L2_CID_CONTRAST:
+ return 0x11;
+ case V4L2_CID_SATURATION:
+ return 0x10;
+ case V4L2_CID_HUE:
+ return 0x0f;
+ case V4L2_CID_AUTOGAIN:
+ return 0x02;
+ case V4L2_CID_COLOR_KILLER:
+ return 0x14;
+ case V4L2_CID_GAIN:
+ return 0x3c;
+ case V4L2_CID_CHROMA_GAIN:
+ return 0x3d;
+ case V4L2_CID_RED_BALANCE:
+ return 0x3f;
+ case V4L2_CID_BLUE_BALANCE:
+ return 0x3e;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int tw2804_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct wis_tw2804 *state = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ s32 addr = get_ctrl_addr(ctrl->id);
+ s32 val = 0;
+
+ if (addr == -EINVAL)
+ return -EINVAL;
+
+ if (state->update) {
+ val = read_reg(client, addr, ctrl->id == V4L2_CID_GAIN ||
+ ctrl->id == V4L2_CID_CHROMA_GAIN ||
+ ctrl->id == V4L2_CID_RED_BALANCE ||
+ ctrl->id == V4L2_CID_BLUE_BALANCE ? 0 : state->channel);
+ if (val < 0)
+ return val;
+ }
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ if (state->update)
+ state->brightness = val;
+ ctrl->value = state->brightness;
+ break;
+ case V4L2_CID_CONTRAST:
+ if (state->update)
+ state->contrast = val;
+ ctrl->value = state->contrast;
+ break;
+ case V4L2_CID_SATURATION:
+ if (state->update)
+ state->saturation = val;
+ ctrl->value = state->saturation;
+ break;
+ case V4L2_CID_HUE:
+ if (state->update)
+ state->hue = val;
+ ctrl->value = state->hue;
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (state->update)
+ state->auto_gain = val & (1<<7) ? 1 : 0;
+ ctrl->value = state->auto_gain;
+ break;
+ case V4L2_CID_COLOR_KILLER:
+ if (state->update)
+ state->ckil = (val & 0x03) == 0x03 ? 1 : 0;
+ ctrl->value = state->ckil;
+ break;
+ case V4L2_CID_GAIN:
+ if (state->update)
+ state->gain = val;
+ ctrl->value = state->gain;
+ break;
+ case V4L2_CID_CHROMA_GAIN:
+ if (state->update)
+ state->cr_gain = val;
+ ctrl->value = state->cr_gain;
+ break;
+ case V4L2_CID_RED_BALANCE:
+ if (state->update)
+ state->r_balance = val;
+ ctrl->value = state->r_balance;
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ if (state->update)
+ state->b_balance = val;
+ ctrl->value = state->b_balance;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ state->update = 0;
+ return 0;
+}
+
+static int tw2804_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct wis_tw2804 *dec = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ s32 reg = 0;
+ s32 addr = get_ctrl_addr(ctrl->id);
+
+ if (addr == -EINVAL)
+ return -EINVAL;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTOGAIN:
+ reg = read_reg(client, addr, dec->channel);
+ if (reg > 0) {
+ if (ctrl->value == 0)
+ ctrl->value = reg & ~(1<<7);
+ else
+ ctrl->value = reg | 1<<7;
+ } else
+ return reg;
+ break;
+ case V4L2_CID_COLOR_KILLER:
+ reg = read_reg(client, addr, dec->channel);
+ if (reg > 0)
+ ctrl->value = (reg & ~(0x03)) | (ctrl->value == 0 ? 0x02 : 0x03);
+ else
+ return reg;
+ break;
+ default:
+ break;
+ }
+
+ ctrl->value = ctrl->value > 255 ? 255 : (ctrl->value < 0 ? 0 : ctrl->value);
+ reg = write_reg(client, addr, (u8)ctrl->value, ctrl->id == V4L2_CID_GAIN ||
+ ctrl->id == V4L2_CID_CHROMA_GAIN ||
+ ctrl->id == V4L2_CID_RED_BALANCE ||
+ ctrl->id == V4L2_CID_BLUE_BALANCE ? 0 : dec->channel);
+
+ if (reg < 0) {
+ v4l2_err(&dec->sd, "Can`t set_ctrl value:id=%d;value=%d\n", ctrl->id, ctrl->value);
+ return reg;
+ }
+
+ dec->update = 1;
+ return tw2804_g_ctrl(sd, ctrl);
+}
+
+static int tw2804_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
+{
+ struct wis_tw2804 *dec = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ u8 regs[] = {
+ 0x01, norm&V4L2_STD_NTSC ? 0xc4 : 0x84,
+ 0x09, norm&V4L2_STD_NTSC ? 0x07 : 0x04,
+ 0x0a, norm&V4L2_STD_NTSC ? 0xf0 : 0x20,
+ 0x0b, norm&V4L2_STD_NTSC ? 0x07 : 0x04,
+ 0x0c, norm&V4L2_STD_NTSC ? 0xf0 : 0x20,
+ 0x0d, norm&V4L2_STD_NTSC ? 0x40 : 0x4a,
+ 0x16, norm&V4L2_STD_NTSC ? 0x00 : 0x40,
+ 0x17, norm&V4L2_STD_NTSC ? 0x00 : 0x40,
+ 0x20, norm&V4L2_STD_NTSC ? 0x07 : 0x0f,
+ 0x21, norm&V4L2_STD_NTSC ? 0x07 : 0x0f,
+ 0xff, 0xff,
+ };
+ write_regs(client, regs, dec->channel);
+ dec->norm = norm;
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops tw2804_core_ops = {
+ .log_status = tw2804_log_status,
+ .g_ctrl = tw2804_g_ctrl,
+ .s_ctrl = tw2804_s_ctrl,
+ .queryctrl = tw2804_queryctrl,
+ .s_std = tw2804_s_std,
+};
+
+static int tw2804_s_video_routing(struct v4l2_subdev *sd, u32 input, u32 output,
+ u32 config)
+{
+ struct wis_tw2804 *dec = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ s32 reg = 0;
+
+ if (0 > input || input > 1)
+ return -EINVAL;
+
+ if (input == dec->input && !dec->update)
+ return 0;
+
+ reg = read_reg(client, 0x22, dec->channel);
+
+ if (reg >= 0) {
+ if (input == 0)
+ reg &= ~(1<<2);
+ else
+ reg |= 1<<2;
+ reg = write_reg(client, 0x22, (u8)reg, dec->channel);
+ }
+
+ if (reg >= 0) {
+ dec->input = input;
+ dec->update = 0;
+ } else
+ return reg;
+ return 0;
+}
+
+static int tw2804_s_mbus_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt)
+{
+ /*TODO need select between 3fmt:
+ * bt_656,
+ * bt_601_8bit,
+ * bt_656_dual,
+ */
+ return 0;
+}
+
+int tw2804_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct wis_tw2804 *dec = to_state(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ u32 reg = read_reg(client, 0x78, 0);
+
+ if (enable == 1)
+ write_reg(client, 0x78, reg & ~(1<<dec->channel), 0);
+ else
+ write_reg(client, 0x78, reg | (1<<dec->channel), 0);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops tw2804_video_ops = {
+ .s_routing = tw2804_s_video_routing,
+ .s_mbus_fmt = tw2804_s_mbus_fmt,
+ .s_stream = tw2804_s_stream,
+};
+
+static const struct v4l2_subdev_ops tw2804_ops = {
+ .core = &tw2804_core_ops,
+ .video = &tw2804_video_ops,
+};
+
static int wis_tw2804_command(struct i2c_client *client,
unsigned int cmd, void *arg)
{
- struct wis_tw2804 *dec = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct wis_tw2804 *dec = to_state(sd);
+ int *input;
if (cmd == DECODER_SET_CHANNEL) {
- int *input = arg;
+ input = arg;
if (*input < 0 || *input > 3) {
printk(KERN_ERR "wis-tw2804: channel %d is not "
"channel number is set\n", cmd);
return 0;
}
-
- switch (cmd) {
- case VIDIOC_S_STD:
- {
- v4l2_std_id *input = arg;
- u8 regs[] = {
- 0x01, *input & V4L2_STD_NTSC ? 0xc4 : 0x84,
- 0x09, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
- 0x0a, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
- 0x0b, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
- 0x0c, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
- 0x0d, *input & V4L2_STD_NTSC ? 0x40 : 0x4a,
- 0x16, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
- 0x17, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
- 0x20, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
- 0x21, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
- 0xff, 0xff,
- };
- write_regs(client, regs, dec->channel);
- dec->norm = *input;
- break;
- }
- case VIDIOC_QUERYCTRL:
- {
- struct v4l2_queryctrl *ctrl = arg;
-
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- ctrl->type = V4L2_CTRL_TYPE_INTEGER;
- strncpy(ctrl->name, "Brightness", sizeof(ctrl->name));
- ctrl->minimum = 0;
- ctrl->maximum = 255;
- ctrl->step = 1;
- ctrl->default_value = 128;
- ctrl->flags = 0;
- break;
- case V4L2_CID_CONTRAST:
- ctrl->type = V4L2_CTRL_TYPE_INTEGER;
- strncpy(ctrl->name, "Contrast", sizeof(ctrl->name));
- ctrl->minimum = 0;
- ctrl->maximum = 255;
- ctrl->step = 1;
- ctrl->default_value = 128;
- ctrl->flags = 0;
- break;
- case V4L2_CID_SATURATION:
- ctrl->type = V4L2_CTRL_TYPE_INTEGER;
- strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
- ctrl->minimum = 0;
- ctrl->maximum = 255;
- ctrl->step = 1;
- ctrl->default_value = 128;
- ctrl->flags = 0;
- break;
- case V4L2_CID_HUE:
- ctrl->type = V4L2_CTRL_TYPE_INTEGER;
- strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
- ctrl->minimum = 0;
- ctrl->maximum = 255;
- ctrl->step = 1;
- ctrl->default_value = 128;
- ctrl->flags = 0;
- break;
- }
- break;
- }
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
-
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- if (ctrl->value > 255)
- dec->brightness = 255;
- else if (ctrl->value < 0)
- dec->brightness = 0;
- else
- dec->brightness = ctrl->value;
- write_reg(client, 0x12, dec->brightness, dec->channel);
- break;
- case V4L2_CID_CONTRAST:
- if (ctrl->value > 255)
- dec->contrast = 255;
- else if (ctrl->value < 0)
- dec->contrast = 0;
- else
- dec->contrast = ctrl->value;
- write_reg(client, 0x11, dec->contrast, dec->channel);
- break;
- case V4L2_CID_SATURATION:
- if (ctrl->value > 255)
- dec->saturation = 255;
- else if (ctrl->value < 0)
- dec->saturation = 0;
- else
- dec->saturation = ctrl->value;
- write_reg(client, 0x10, dec->saturation, dec->channel);
- break;
- case V4L2_CID_HUE:
- if (ctrl->value > 255)
- dec->hue = 255;
- else if (ctrl->value < 0)
- dec->hue = 0;
- else
- dec->hue = ctrl->value;
- write_reg(client, 0x0f, dec->hue, dec->channel);
- break;
- }
- break;
- }
- case VIDIOC_G_CTRL:
- {
- struct v4l2_control *ctrl = arg;
-
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- ctrl->value = dec->brightness;
- break;
- case V4L2_CID_CONTRAST:
- ctrl->value = dec->contrast;
- break;
- case V4L2_CID_SATURATION:
- ctrl->value = dec->saturation;
- break;
- case V4L2_CID_HUE:
- ctrl->value = dec->hue;
- break;
- }
- break;
- }
- default:
- break;
- }
return 0;
}
{
struct i2c_adapter *adapter = client->adapter;
struct wis_tw2804 *dec;
+ struct v4l2_subdev *sd;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
+ dec = kzalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
+
if (dec == NULL)
return -ENOMEM;
-
+ sd = &dec->sd;
+ dec->update = 1;
dec->channel = -1;
dec->norm = V4L2_STD_NTSC;
dec->brightness = 128;
dec->contrast = 128;
dec->saturation = 128;
dec->hue = 128;
- i2c_set_clientdata(client, dec);
+ dec->gain = 128;
+ dec->cr_gain = 128;
+ dec->b_balance = 122;
+ dec->r_balance = 122;
+ v4l2_i2c_subdev_init(sd, client, &tw2804_ops);
printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
client->addr, adapter->name);
static int wis_tw2804_remove(struct i2c_client *client)
{
- struct wis_tw2804 *dec = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
- kfree(dec);
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_state(sd));
return 0;
}
projects / platform / kernel / linux-rpi.git / commitdiff