2  * Driver for AK8813 / AK8814 TV-ecoders from Asahi Kasei Microsystems Co., Ltd. (AKM)
19 #include <media/v4l2-common.h>
20 #include <media/v4l2-device.h>
34 	unsigned int lines;  member
44 		     const u8 data)  in reg_write()  argument
46 	return i2c_smbus_write_byte_data(client, reg, data);  in reg_write()
50 		   const u8 data, u8 mask)  in reg_set()  argument
55 	return reg_write(client, reg, (ret & ~mask) | (data & mask));  in reg_set()
69 	if (reg->reg > 0x26)  in ak881x_g_register()
70 		return -EINVAL;  in ak881x_g_register()
72 	reg->size = 1;  in ak881x_g_register()
73 	reg->val = reg_read(client, reg->reg);  in ak881x_g_register()
75 	if (reg->val > 0xffff)  in ak881x_g_register()
76 		return -EIO;  in ak881x_g_register()
86 	if (reg->reg > 0x26)  in ak881x_s_register()
87 		return -EINVAL;  in ak881x_s_register()
89 	if (reg_write(client, reg->reg, reg->val) < 0)  in ak881x_s_register()
90 		return -EIO;  in ak881x_s_register()
100 	struct v4l2_mbus_framefmt *mf = &format->format;  in ak881x_fill_fmt()
104 	if (format->pad)  in ak881x_fill_fmt()
105 		return -EINVAL;  in ak881x_fill_fmt()
107 	v4l_bound_align_image(&mf->width, 0, 720, 2,  in ak881x_fill_fmt()
108 			      &mf->height, 0, ak881x->lines, 1, 0);  in ak881x_fill_fmt()
109 	mf->field	= V4L2_FIELD_INTERLACED;  in ak881x_fill_fmt()
110 	mf->code	= MEDIA_BUS_FMT_YUYV8_2X8;  in ak881x_fill_fmt()
111 	mf->colorspace	= V4L2_COLORSPACE_SMPTE170M;  in ak881x_fill_fmt()
120 	if (code->pad || code->index)  in ak881x_enum_mbus_code()
121 		return -EINVAL;  in ak881x_enum_mbus_code()
123 	code->code = MEDIA_BUS_FMT_YUYV8_2X8;  in ak881x_enum_mbus_code()
134 	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)  in ak881x_get_selection()
135 		return -EINVAL;  in ak881x_get_selection()
137 	switch (sel->target) {  in ak881x_get_selection()
140 		sel->r.left = 0;  in ak881x_get_selection()
141 		sel->r.top = 0;  in ak881x_get_selection()
142 		sel->r.width = 720;  in ak881x_get_selection()
143 		sel->r.height = ak881x->lines;  in ak881x_get_selection()
146 		return -EINVAL;  in ak881x_get_selection()
158 		ak881x->lines = 480;  in ak881x_s_std_output()
161 		ak881x->lines = 480;  in ak881x_s_std_output()
164 		ak881x->lines = 480;  in ak881x_s_std_output()
167 		ak881x->lines = 480;  in ak881x_s_std_output()
170 		ak881x->lines = 576;  in ak881x_s_std_output()
173 		return -EINVAL;  in ak881x_s_std_output()
188 		/* For colour-bar testing set bit 6 of AK881X_VIDEO_PROCESS1 */  in ak881x_s_stream()
190 		if (ak881x->pdata->flags & AK881X_COMPONENT)  in ak881x_s_stream()
196 		dev_dbg(&client->dev, "chip status 0x%x\n",  in ak881x_s_stream()
201 		dev_dbg(&client->dev, "chip status 0x%x\n",  in ak881x_s_stream()
236 	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);  in ak881x_probe()
238 	u8 ifmode, data;  in ak881x_probe()  local
241 		dev_warn(&adapter->dev,  in ak881x_probe()
242 			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");  in ak881x_probe()
243 		return -EIO;  in ak881x_probe()
246 	ak881x = devm_kzalloc(&client->dev, sizeof(*ak881x), GFP_KERNEL);  in ak881x_probe()
248 		return -ENOMEM;  in ak881x_probe()
250 	v4l2_i2c_subdev_init(&ak881x->subdev, client, &ak881x_subdev_ops);  in ak881x_probe()
252 	data = reg_read(client, AK881X_DEVICE_ID);  in ak881x_probe()
254 	switch (data) {  in ak881x_probe()
259 		dev_err(&client->dev,  in ak881x_probe()
260 			"No ak881x chip detected, register read %x\n", data);  in ak881x_probe()
261 		return -ENODEV;  in ak881x_probe()
264 	ak881x->revision = reg_read(client, AK881X_DEVICE_REVISION);  in ak881x_probe()
265 	ak881x->pdata = client->dev.platform_data;  in ak881x_probe()
267 	if (ak881x->pdata) {  in ak881x_probe()
268 		if (ak881x->pdata->flags & AK881X_FIELD)  in ak881x_probe()
273 		switch (ak881x->pdata->flags & AK881X_IF_MODE_MASK) {  in ak881x_probe()
285 		dev_dbg(&client->dev, "IF mode %x\n", ifmode);  in ak881x_probe()
289 		 * "black" lines on, e.g., SuperH VOU, whose default value of 20  in ak881x_probe()
295 	/* Hardware default: NTSC-M */  in ak881x_probe()
296 	ak881x->lines = 480;  in ak881x_probe()
298 	dev_info(&client->dev, "Detected an ak881x chip ID %x, revision %x\n",  in ak881x_probe()
299 		 data, ak881x->revision);  in ak881x_probe()
308 	v4l2_device_unregister_subdev(&ak881x->subdev);  in ak881x_remove()
331 MODULE_DESCRIPTION("TV-output driver for ak8813/ak8814");