1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Driver for the mt9m111 sensor
4  *
5  * Copyright (C) 2008 Erik Andrén
6  * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
7  * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
8  *
9  * Portions of code to USB interface and ALi driver software,
10  * Copyright (c) 2006 Willem Duinker
11  * v4l2 interface modeled after the V4L2 driver
12  * for SN9C10x PC Camera Controllers
13  */
14 
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 
17 #include "m5602_mt9m111.h"
18 
19 static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl);
20 static void mt9m111_dump_registers(struct sd *sd);
21 
22 static const unsigned char preinit_mt9m111[][4] = {
23 	{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
24 	{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
25 	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
26 	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
27 	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x0d, 0x00},
28 	{BRIDGE, M5602_XB_SENSOR_CTRL, 0x00, 0x00},
29 	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
30 	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
31 
32 	{SENSOR, MT9M111_PAGE_MAP, 0x00, 0x00},
33 	{SENSOR, MT9M111_SC_RESET,
34 		MT9M111_RESET |
35 		MT9M111_RESTART |
36 		MT9M111_ANALOG_STANDBY |
37 		MT9M111_CHIP_DISABLE,
38 		MT9M111_SHOW_BAD_FRAMES |
39 		MT9M111_RESTART_BAD_FRAMES |
40 		MT9M111_SYNCHRONIZE_CHANGES},
41 
42 	{BRIDGE, M5602_XB_GPIO_DIR, 0x05, 0x00},
43 	{BRIDGE, M5602_XB_GPIO_DAT, 0x04, 0x00},
44 	{BRIDGE, M5602_XB_GPIO_EN_H, 0x3e, 0x00},
45 	{BRIDGE, M5602_XB_GPIO_DIR_H, 0x3e, 0x00},
46 	{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02, 0x00},
47 	{BRIDGE, M5602_XB_GPIO_EN_L, 0xff, 0x00},
48 	{BRIDGE, M5602_XB_GPIO_DIR_L, 0xff, 0x00},
49 	{BRIDGE, M5602_XB_GPIO_DAT_L, 0x00, 0x00},
50 
51 	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
52 	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
53 	{BRIDGE, M5602_XB_GPIO_DIR, 0x07, 0x00},
54 	{BRIDGE, M5602_XB_GPIO_DAT, 0x0b, 0x00},
55 	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06, 0x00},
56 	{BRIDGE, M5602_XB_GPIO_EN_L, 0x00, 0x00},
57 
58 	{BRIDGE, M5602_XB_I2C_CLK_DIV, 0x0a, 0x00}
59 };
60 
61 static const unsigned char init_mt9m111[][4] = {
62 	{BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
63 	{BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
64 	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
65 	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
66 	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
67 	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
68 
69 	{BRIDGE, M5602_XB_GPIO_EN_H, 0x06, 0x00},
70 	{BRIDGE, M5602_XB_GPIO_EN_L, 0x00, 0x00},
71 	{BRIDGE, M5602_XB_GPIO_DAT, 0x04, 0x00},
72 	{BRIDGE, M5602_XB_GPIO_DIR_H, 0x3e, 0x00},
73 	{BRIDGE, M5602_XB_GPIO_DIR_L, 0xff, 0x00},
74 	{BRIDGE, M5602_XB_GPIO_DAT_H, 0x02, 0x00},
75 	{BRIDGE, M5602_XB_GPIO_DAT_L, 0x00, 0x00},
76 	{BRIDGE, M5602_XB_GPIO_DIR, 0x07, 0x00},
77 	{BRIDGE, M5602_XB_GPIO_DAT, 0x0b, 0x00},
78 	{BRIDGE, M5602_XB_I2C_CLK_DIV, 0x0a, 0x00},
79 
80 	{SENSOR, MT9M111_SC_RESET, 0x00, 0x29},
81 	{SENSOR, MT9M111_PAGE_MAP, 0x00, 0x00},
82 	{SENSOR, MT9M111_SC_RESET, 0x00, 0x08},
83 	{SENSOR, MT9M111_PAGE_MAP, 0x00, 0x01},
84 	{SENSOR, MT9M111_CP_OPERATING_MODE_CTL, 0x00,
85 			MT9M111_CP_OPERATING_MODE_CTL},
86 	{SENSOR, MT9M111_CP_LENS_CORRECTION_1, 0x04, 0x2a},
87 	{SENSOR, MT9M111_CP_DEFECT_CORR_CONTEXT_A, 0x00,
88 				MT9M111_2D_DEFECT_CORRECTION_ENABLE},
89 	{SENSOR, MT9M111_CP_DEFECT_CORR_CONTEXT_B, 0x00,
90 				MT9M111_2D_DEFECT_CORRECTION_ENABLE},
91 	{SENSOR, MT9M111_CP_LUMA_OFFSET, 0x00, 0x00},
92 	{SENSOR, MT9M111_CP_LUMA_CLIP, 0xff, 0x00},
93 	{SENSOR, MT9M111_CP_OUTPUT_FORMAT_CTL2_CONTEXT_A, 0x14, 0x00},
94 	{SENSOR, MT9M111_CP_OUTPUT_FORMAT_CTL2_CONTEXT_B, 0x14, 0x00},
95 	{SENSOR, 0xcd, 0x00, 0x0e},
96 	{SENSOR, 0xd0, 0x00, 0x40},
97 
98 	{SENSOR, MT9M111_PAGE_MAP, 0x00, 0x02},
99 	{SENSOR, MT9M111_CC_AUTO_EXPOSURE_PARAMETER_18, 0x00, 0x00},
100 	{SENSOR, MT9M111_CC_AWB_PARAMETER_7, 0xef, 0x03},
101 
102 	{SENSOR, MT9M111_PAGE_MAP, 0x00, 0x00},
103 	{SENSOR, 0x33, 0x03, 0x49},
104 	{SENSOR, 0x34, 0xc0, 0x19},
105 	{SENSOR, 0x3f, 0x20, 0x20},
106 	{SENSOR, 0x40, 0x20, 0x20},
107 	{SENSOR, 0x5a, 0xc0, 0x0a},
108 	{SENSOR, 0x70, 0x7b, 0x0a},
109 	{SENSOR, 0x71, 0xff, 0x00},
110 	{SENSOR, 0x72, 0x19, 0x0e},
111 	{SENSOR, 0x73, 0x18, 0x0f},
112 	{SENSOR, 0x74, 0x57, 0x32},
113 	{SENSOR, 0x75, 0x56, 0x34},
114 	{SENSOR, 0x76, 0x73, 0x35},
115 	{SENSOR, 0x77, 0x30, 0x12},
116 	{SENSOR, 0x78, 0x79, 0x02},
117 	{SENSOR, 0x79, 0x75, 0x06},
118 	{SENSOR, 0x7a, 0x77, 0x0a},
119 	{SENSOR, 0x7b, 0x78, 0x09},
120 	{SENSOR, 0x7c, 0x7d, 0x06},
121 	{SENSOR, 0x7d, 0x31, 0x10},
122 	{SENSOR, 0x7e, 0x00, 0x7e},
123 	{SENSOR, 0x80, 0x59, 0x04},
124 	{SENSOR, 0x81, 0x59, 0x04},
125 	{SENSOR, 0x82, 0x57, 0x0a},
126 	{SENSOR, 0x83, 0x58, 0x0b},
127 	{SENSOR, 0x84, 0x47, 0x0c},
128 	{SENSOR, 0x85, 0x48, 0x0e},
129 	{SENSOR, 0x86, 0x5b, 0x02},
130 	{SENSOR, 0x87, 0x00, 0x5c},
131 	{SENSOR, MT9M111_CONTEXT_CONTROL, 0x00, MT9M111_SEL_CONTEXT_B},
132 	{SENSOR, 0x60, 0x00, 0x80},
133 	{SENSOR, 0x61, 0x00, 0x00},
134 	{SENSOR, 0x62, 0x00, 0x00},
135 	{SENSOR, 0x63, 0x00, 0x00},
136 	{SENSOR, 0x64, 0x00, 0x00},
137 
138 	{SENSOR, MT9M111_SC_ROWSTART, 0x00, 0x0d}, /* 13 */
139 	{SENSOR, MT9M111_SC_COLSTART, 0x00, 0x12}, /* 18 */
140 	{SENSOR, MT9M111_SC_WINDOW_HEIGHT, 0x04, 0x00}, /* 1024 */
141 	{SENSOR, MT9M111_SC_WINDOW_WIDTH, 0x05, 0x10}, /* 1296 */
142 	{SENSOR, MT9M111_SC_HBLANK_CONTEXT_B, 0x01, 0x60}, /* 352 */
143 	{SENSOR, MT9M111_SC_VBLANK_CONTEXT_B, 0x00, 0x11}, /* 17 */
144 	{SENSOR, MT9M111_SC_HBLANK_CONTEXT_A, 0x01, 0x60}, /* 352 */
145 	{SENSOR, MT9M111_SC_VBLANK_CONTEXT_A, 0x00, 0x11}, /* 17 */
146 	{SENSOR, MT9M111_SC_R_MODE_CONTEXT_A, 0x01, 0x0f}, /* 271 */
147 	{SENSOR, 0x30, 0x04, 0x00},
148 	/* Set number of blank rows chosen to 400 */
149 	{SENSOR, MT9M111_SC_SHUTTER_WIDTH, 0x01, 0x90},
150 };
151 
152 static const unsigned char start_mt9m111[][4] = {
153 	{BRIDGE, M5602_XB_SEN_CLK_DIV, 0x06, 0x00},
154 	{BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
155 	{BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
156 	{BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
157 	{BRIDGE, M5602_XB_LINE_OF_FRAME_H, 0x81, 0x00},
158 	{BRIDGE, M5602_XB_PIX_OF_LINE_H, 0x82, 0x00},
159 	{BRIDGE, M5602_XB_SIG_INI, 0x01, 0x00},
160 	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
161 	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
162 	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
163 	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
164 };
165 
166 static struct v4l2_pix_format mt9m111_modes[] = {
167 	{
168 		640,
169 		480,
170 		V4L2_PIX_FMT_SBGGR8,
171 		V4L2_FIELD_NONE,
172 		.sizeimage = 640 * 480,
173 		.bytesperline = 640,
174 		.colorspace = V4L2_COLORSPACE_SRGB,
175 		.priv = 0
176 	}
177 };
178 
179 static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
180 	.s_ctrl = mt9m111_s_ctrl,
181 };
182 
183 static const struct v4l2_ctrl_config mt9m111_greenbal_cfg = {
184 	.ops	= &mt9m111_ctrl_ops,
185 	.id	= M5602_V4L2_CID_GREEN_BALANCE,
186 	.name	= "Green Balance",
187 	.type	= V4L2_CTRL_TYPE_INTEGER,
188 	.min	= 0,
189 	.max	= 0x7ff,
190 	.step	= 1,
191 	.def	= MT9M111_GREEN_GAIN_DEFAULT,
192 	.flags	= V4L2_CTRL_FLAG_SLIDER,
193 };
194 
mt9m111_probe(struct sd * sd)195 int mt9m111_probe(struct sd *sd)
196 {
197 	u8 data[2] = {0x00, 0x00};
198 	int i, err;
199 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
200 
201 	if (force_sensor) {
202 		if (force_sensor == MT9M111_SENSOR) {
203 			pr_info("Forcing a %s sensor\n", mt9m111.name);
204 			goto sensor_found;
205 		}
206 		/* If we want to force another sensor, don't try to probe this
207 		 * one */
208 		return -ENODEV;
209 	}
210 
211 	gspca_dbg(gspca_dev, D_PROBE, "Probing for a mt9m111 sensor\n");
212 
213 	/* Do the preinit */
214 	for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
215 		if (preinit_mt9m111[i][0] == BRIDGE) {
216 			err = m5602_write_bridge(sd,
217 					preinit_mt9m111[i][1],
218 					preinit_mt9m111[i][2]);
219 		} else {
220 			data[0] = preinit_mt9m111[i][2];
221 			data[1] = preinit_mt9m111[i][3];
222 			err = m5602_write_sensor(sd,
223 					preinit_mt9m111[i][1], data, 2);
224 		}
225 		if (err < 0)
226 			return err;
227 	}
228 
229 	if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
230 		return -ENODEV;
231 
232 	if ((data[0] == 0x14) && (data[1] == 0x3a)) {
233 		pr_info("Detected a mt9m111 sensor\n");
234 		goto sensor_found;
235 	}
236 
237 	return -ENODEV;
238 
239 sensor_found:
240 	sd->gspca_dev.cam.cam_mode = mt9m111_modes;
241 	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
242 
243 	return 0;
244 }
245 
mt9m111_init(struct sd * sd)246 int mt9m111_init(struct sd *sd)
247 {
248 	int i, err = 0;
249 
250 	/* Init the sensor */
251 	for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
252 		u8 data[2];
253 
254 		if (init_mt9m111[i][0] == BRIDGE) {
255 			err = m5602_write_bridge(sd,
256 				init_mt9m111[i][1],
257 				init_mt9m111[i][2]);
258 		} else {
259 			data[0] = init_mt9m111[i][2];
260 			data[1] = init_mt9m111[i][3];
261 			err = m5602_write_sensor(sd,
262 				init_mt9m111[i][1], data, 2);
263 		}
264 	}
265 
266 	if (dump_sensor)
267 		mt9m111_dump_registers(sd);
268 
269 	return 0;
270 }
271 
mt9m111_init_controls(struct sd * sd)272 int mt9m111_init_controls(struct sd *sd)
273 {
274 	struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
275 
276 	sd->gspca_dev.vdev.ctrl_handler = hdl;
277 	v4l2_ctrl_handler_init(hdl, 7);
278 
279 	sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
280 					       V4L2_CID_AUTO_WHITE_BALANCE,
281 					       0, 1, 1, 0);
282 	sd->green_bal = v4l2_ctrl_new_custom(hdl, &mt9m111_greenbal_cfg, NULL);
283 	sd->red_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
284 					V4L2_CID_RED_BALANCE, 0, 0x7ff, 1,
285 					MT9M111_RED_GAIN_DEFAULT);
286 	sd->blue_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
287 					V4L2_CID_BLUE_BALANCE, 0, 0x7ff, 1,
288 					MT9M111_BLUE_GAIN_DEFAULT);
289 
290 	v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_GAIN, 0,
291 			  (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2, 1,
292 			  MT9M111_DEFAULT_GAIN);
293 
294 	sd->hflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_HFLIP,
295 				      0, 1, 1, 0);
296 	sd->vflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_VFLIP,
297 				      0, 1, 1, 0);
298 
299 	if (hdl->error) {
300 		pr_err("Could not initialize controls\n");
301 		return hdl->error;
302 	}
303 
304 	v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
305 	v4l2_ctrl_cluster(2, &sd->hflip);
306 
307 	return 0;
308 }
309 
mt9m111_start(struct sd * sd)310 int mt9m111_start(struct sd *sd)
311 {
312 	int i, err = 0;
313 	u8 data[2];
314 	struct cam *cam = &sd->gspca_dev.cam;
315 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
316 
317 	int width = cam->cam_mode[sd->gspca_dev.curr_mode].width - 1;
318 	int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
319 
320 	for (i = 0; i < ARRAY_SIZE(start_mt9m111) && !err; i++) {
321 		if (start_mt9m111[i][0] == BRIDGE) {
322 			err = m5602_write_bridge(sd,
323 				start_mt9m111[i][1],
324 				start_mt9m111[i][2]);
325 		} else {
326 			data[0] = start_mt9m111[i][2];
327 			data[1] = start_mt9m111[i][3];
328 			err = m5602_write_sensor(sd,
329 				start_mt9m111[i][1], data, 2);
330 		}
331 	}
332 	if (err < 0)
333 		return err;
334 
335 	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
336 	if (err < 0)
337 		return err;
338 
339 	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
340 	if (err < 0)
341 		return err;
342 
343 	for (i = 0; i < 2 && !err; i++)
344 		err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
345 	if (err < 0)
346 		return err;
347 
348 	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
349 	if (err < 0)
350 		return err;
351 
352 	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2);
353 	if (err < 0)
354 		return err;
355 
356 	for (i = 0; i < 2 && !err; i++)
357 		err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
358 	if (err < 0)
359 		return err;
360 
361 	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
362 				 (width >> 8) & 0xff);
363 	if (err < 0)
364 		return err;
365 
366 	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, width & 0xff);
367 	if (err < 0)
368 		return err;
369 
370 	err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
371 	if (err < 0)
372 		return err;
373 
374 	switch (width) {
375 	case 640:
376 		gspca_dbg(gspca_dev, D_CONF, "Configuring camera for VGA mode\n");
377 		break;
378 
379 	case 320:
380 		gspca_dbg(gspca_dev, D_CONF, "Configuring camera for QVGA mode\n");
381 		break;
382 	}
383 	return err;
384 }
385 
mt9m111_disconnect(struct sd * sd)386 void mt9m111_disconnect(struct sd *sd)
387 {
388 	sd->sensor = NULL;
389 }
390 
mt9m111_set_hvflip(struct gspca_dev * gspca_dev)391 static int mt9m111_set_hvflip(struct gspca_dev *gspca_dev)
392 {
393 	int err;
394 	u8 data[2] = {0x00, 0x00};
395 	struct sd *sd = (struct sd *) gspca_dev;
396 	int hflip;
397 	int vflip;
398 
399 	gspca_dbg(gspca_dev, D_CONF, "Set hvflip to %d %d\n",
400 		  sd->hflip->val, sd->vflip->val);
401 
402 	/* The mt9m111 is flipped by default */
403 	hflip = !sd->hflip->val;
404 	vflip = !sd->vflip->val;
405 
406 	/* Set the correct page map */
407 	err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
408 	if (err < 0)
409 		return err;
410 
411 	data[0] = MT9M111_RMB_OVER_SIZED;
412 	if (gspca_dev->pixfmt.width == 640) {
413 		data[1] = MT9M111_RMB_ROW_SKIP_2X |
414 			  MT9M111_RMB_COLUMN_SKIP_2X |
415 			  (hflip << 1) | vflip;
416 	} else {
417 		data[1] = MT9M111_RMB_ROW_SKIP_4X |
418 			  MT9M111_RMB_COLUMN_SKIP_4X |
419 			  (hflip << 1) | vflip;
420 	}
421 	err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
422 					data, 2);
423 	return err;
424 }
425 
mt9m111_set_auto_white_balance(struct gspca_dev * gspca_dev,__s32 val)426 static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
427 					  __s32 val)
428 {
429 	struct sd *sd = (struct sd *) gspca_dev;
430 	int err;
431 	u8 data[2];
432 
433 	err = m5602_read_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
434 	if (err < 0)
435 		return err;
436 
437 	data[1] = ((data[1] & 0xfd) | ((val & 0x01) << 1));
438 
439 	err = m5602_write_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
440 
441 	gspca_dbg(gspca_dev, D_CONF, "Set auto white balance %d\n", val);
442 	return err;
443 }
444 
mt9m111_set_gain(struct gspca_dev * gspca_dev,__s32 val)445 static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
446 {
447 	int err, tmp;
448 	u8 data[2] = {0x00, 0x00};
449 	struct sd *sd = (struct sd *) gspca_dev;
450 
451 	/* Set the correct page map */
452 	err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
453 	if (err < 0)
454 		return err;
455 
456 	if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
457 		return -EINVAL;
458 
459 	if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
460 	    (val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
461 		tmp = (1 << 10) | (val << 9) |
462 				(val << 8) | (val / 8);
463 	else if ((val >= INITIAL_MAX_GAIN * 2) &&
464 		 (val <  INITIAL_MAX_GAIN * 2 * 2))
465 		tmp = (1 << 9) | (1 << 8) | (val / 4);
466 	else if ((val >= INITIAL_MAX_GAIN) &&
467 		 (val < INITIAL_MAX_GAIN * 2))
468 		tmp = (1 << 8) | (val / 2);
469 	else
470 		tmp = val;
471 
472 	data[1] = (tmp & 0xff);
473 	data[0] = (tmp & 0xff00) >> 8;
474 	gspca_dbg(gspca_dev, D_CONF, "tmp=%d, data[1]=%d, data[0]=%d\n", tmp,
475 		  data[1], data[0]);
476 
477 	err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
478 				   data, 2);
479 
480 	return err;
481 }
482 
mt9m111_set_green_balance(struct gspca_dev * gspca_dev,__s32 val)483 static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
484 {
485 	int err;
486 	u8 data[2];
487 	struct sd *sd = (struct sd *) gspca_dev;
488 
489 	data[1] = (val & 0xff);
490 	data[0] = (val & 0xff00) >> 8;
491 
492 	gspca_dbg(gspca_dev, D_CONF, "Set green balance %d\n", val);
493 	err = m5602_write_sensor(sd, MT9M111_SC_GREEN_1_GAIN,
494 				 data, 2);
495 	if (err < 0)
496 		return err;
497 
498 	return m5602_write_sensor(sd, MT9M111_SC_GREEN_2_GAIN,
499 				  data, 2);
500 }
501 
mt9m111_set_blue_balance(struct gspca_dev * gspca_dev,__s32 val)502 static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
503 {
504 	u8 data[2];
505 	struct sd *sd = (struct sd *) gspca_dev;
506 
507 	data[1] = (val & 0xff);
508 	data[0] = (val & 0xff00) >> 8;
509 
510 	gspca_dbg(gspca_dev, D_CONF, "Set blue balance %d\n", val);
511 
512 	return m5602_write_sensor(sd, MT9M111_SC_BLUE_GAIN,
513 				  data, 2);
514 }
515 
mt9m111_set_red_balance(struct gspca_dev * gspca_dev,__s32 val)516 static int mt9m111_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
517 {
518 	u8 data[2];
519 	struct sd *sd = (struct sd *) gspca_dev;
520 
521 	data[1] = (val & 0xff);
522 	data[0] = (val & 0xff00) >> 8;
523 
524 	gspca_dbg(gspca_dev, D_CONF, "Set red balance %d\n", val);
525 
526 	return m5602_write_sensor(sd, MT9M111_SC_RED_GAIN,
527 				  data, 2);
528 }
529 
mt9m111_s_ctrl(struct v4l2_ctrl * ctrl)530 static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
531 {
532 	struct gspca_dev *gspca_dev =
533 		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
534 	struct sd *sd = (struct sd *) gspca_dev;
535 	int err;
536 
537 	if (!gspca_dev->streaming)
538 		return 0;
539 
540 	switch (ctrl->id) {
541 	case V4L2_CID_AUTO_WHITE_BALANCE:
542 		err = mt9m111_set_auto_white_balance(gspca_dev, ctrl->val);
543 		if (err || ctrl->val)
544 			return err;
545 		err = mt9m111_set_green_balance(gspca_dev, sd->green_bal->val);
546 		if (err)
547 			return err;
548 		err = mt9m111_set_red_balance(gspca_dev, sd->red_bal->val);
549 		if (err)
550 			return err;
551 		err = mt9m111_set_blue_balance(gspca_dev, sd->blue_bal->val);
552 		break;
553 	case V4L2_CID_GAIN:
554 		err = mt9m111_set_gain(gspca_dev, ctrl->val);
555 		break;
556 	case V4L2_CID_HFLIP:
557 		err = mt9m111_set_hvflip(gspca_dev);
558 		break;
559 	default:
560 		return -EINVAL;
561 	}
562 
563 	return err;
564 }
565 
mt9m111_dump_registers(struct sd * sd)566 static void mt9m111_dump_registers(struct sd *sd)
567 {
568 	u8 address, value[2] = {0x00, 0x00};
569 
570 	pr_info("Dumping the mt9m111 register state\n");
571 
572 	pr_info("Dumping the mt9m111 sensor core registers\n");
573 	value[1] = MT9M111_SENSOR_CORE;
574 	m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
575 	for (address = 0; address < 0xff; address++) {
576 		m5602_read_sensor(sd, address, value, 2);
577 		pr_info("register 0x%x contains 0x%x%x\n",
578 			address, value[0], value[1]);
579 	}
580 
581 	pr_info("Dumping the mt9m111 color pipeline registers\n");
582 	value[1] = MT9M111_COLORPIPE;
583 	m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
584 	for (address = 0; address < 0xff; address++) {
585 		m5602_read_sensor(sd, address, value, 2);
586 		pr_info("register 0x%x contains 0x%x%x\n",
587 			address, value[0], value[1]);
588 	}
589 
590 	pr_info("Dumping the mt9m111 camera control registers\n");
591 	value[1] = MT9M111_CAMERA_CONTROL;
592 	m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
593 	for (address = 0; address < 0xff; address++) {
594 		m5602_read_sensor(sd, address, value, 2);
595 		pr_info("register 0x%x contains 0x%x%x\n",
596 			address, value[0], value[1]);
597 	}
598 
599 	pr_info("mt9m111 register state dump complete\n");
600 }
601