media/i2c/tw9903.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2005-2006 Micronas USA Inc.
11 #include <media/v4l2-device.h>
12 #include <media/v4l2-ctrls.h>
19  * This driver is based on the wis-tw9903.c source that was in
21  * saturation and scaling (neither seemed to work). If anyone ever gets
24  * wis-tw9903 driver is still present.
50 	0x0d, 0x00, /* scaling */
51 	0x0e, 0x11, /* scaling */
52 	0x0f, 0x00, /* scaling */
56 	0x13, 0x7f, /* U gain */
57 	0x14, 0x5a, /* V gain */
65 	0x20, 0xa0, /* clamping gain (working 0x50) */
80 	0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */
87 	0x00, 0x00, /* Terminator (reg 0x00 is read-only) */
103 			return -1;  in write_regs()
134 	dec->norm = norm;  in tw9903_s_std()
141 	struct tw9903 *dec = container_of(ctrl->handler, struct tw9903, hdl);  in tw9903_s_ctrl()
142 	struct v4l2_subdev *sd = &dec->sd;  in tw9903_s_ctrl()
144 	switch (ctrl->id) {  in tw9903_s_ctrl()
146 		write_reg(sd, 0x10, ctrl->val);  in tw9903_s_ctrl()
149 		write_reg(sd, 0x11, ctrl->val);  in tw9903_s_ctrl()
152 		write_reg(sd, 0x15, ctrl->val);  in tw9903_s_ctrl()
155 		return -EINVAL;  in tw9903_s_ctrl()
163 	bool is_60hz = dec->norm & V4L2_STD_525_60;  in tw9903_log_status()
165 	v4l2_info(sd, "Standard: %d Hz\n", is_60hz ? 60 : 50);  in tw9903_log_status()
170 /* --------------------------------------------------------------------------*/
190 /* --------------------------------------------------------------------------*/
199 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))  in tw9903_probe()
200 		return -EIO;  in tw9903_probe()
202 	v4l_info(client, "chip found @ 0x%02x (%s)\n",  in tw9903_probe()
203 			client->addr << 1, client->adapter->name);  in tw9903_probe()
205 	dec = devm_kzalloc(&client->dev, sizeof(*dec), GFP_KERNEL);  in tw9903_probe()
207 		return -ENOMEM;  in tw9903_probe()
208 	sd = &dec->sd;  in tw9903_probe()
210 	hdl = &dec->hdl;  in tw9903_probe()
213 		V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);  in tw9903_probe()
217 		V4L2_CID_HUE, -128, 127, 1, 0);  in tw9903_probe()
218 	sd->ctrl_handler = hdl;  in tw9903_probe()
219 	if (hdl->error) {  in tw9903_probe()
220 		int err = hdl->error;  in tw9903_probe()
227 	dec->norm = V4L2_STD_NTSC;  in tw9903_probe()
230 		v4l2_err(client, "error initializing TW9903\n");  in tw9903_probe()
231 		return -EINVAL;  in tw9903_probe()
242 	v4l2_ctrl_handler_free(&to_state(sd)->hdl);  in tw9903_remove()
245 /* ----------------------------------------------------------------------- */