Merge tag 'v3.14.25' into backport/v3.14.24-ltsi-rc1+v3.14.25/snapshot-merge.wip
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / media / i2c / tvp7002.c
1 /* Texas Instruments Triple 8-/10-BIT 165-/110-MSPS Video and Graphics
2  * Digitizer with Horizontal PLL registers
3  *
4  * Copyright (C) 2009 Texas Instruments Inc
5  * Author: Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>
6  *
7  * This code is partially based upon the TVP5150 driver
8  * written by Mauro Carvalho Chehab (mchehab@infradead.org),
9  * the TVP514x driver written by Vaibhav Hiremath <hvaibhav@ti.com>
10  * and the TVP7002 driver in the TI LSP 2.10.00.14. Revisions by
11  * Muralidharan Karicheri and Snehaprabha Narnakaje (TI).
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software
25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26  */
27 #include <linux/delay.h>
28 #include <linux/i2c.h>
29 #include <linux/slab.h>
30 #include <linux/videodev2.h>
31 #include <linux/module.h>
32 #include <linux/of.h>
33 #include <linux/of_graph.h>
34 #include <linux/v4l2-dv-timings.h>
35 #include <media/tvp7002.h>
36 #include <media/v4l2-async.h>
37 #include <media/v4l2-device.h>
38 #include <media/v4l2-common.h>
39 #include <media/v4l2-ctrls.h>
40 #include <media/v4l2-of.h>
41
42 #include "tvp7002_reg.h"
43
44 MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
45 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
46 MODULE_LICENSE("GPL");
47
48 /* I2C retry attempts */
49 #define I2C_RETRY_COUNT         (5)
50
51 /* End of registers */
52 #define TVP7002_EOR             0x5c
53
54 /* Read write definition for registers */
55 #define TVP7002_READ            0
56 #define TVP7002_WRITE           1
57 #define TVP7002_RESERVED        2
58
59 /* Interlaced vs progressive mask and shift */
60 #define TVP7002_IP_SHIFT        5
61 #define TVP7002_INPR_MASK       (0x01 << TVP7002_IP_SHIFT)
62
63 /* Shift for CPL and LPF registers */
64 #define TVP7002_CL_SHIFT        8
65 #define TVP7002_CL_MASK         0x0f
66
67 /* Debug functions */
68 static bool debug;
69 module_param(debug, bool, 0644);
70 MODULE_PARM_DESC(debug, "Debug level (0-2)");
71
72 /* Structure for register values */
73 struct i2c_reg_value {
74         u8 reg;
75         u8 value;
76         u8 type;
77 };
78
79 /*
80  * Register default values (according to tvp7002 datasheet)
81  * In the case of read-only registers, the value (0xff) is
82  * never written. R/W functionality is controlled by the
83  * writable bit in the register struct definition.
84  */
85 static const struct i2c_reg_value tvp7002_init_default[] = {
86         { TVP7002_CHIP_REV, 0xff, TVP7002_READ },
87         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
88         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
89         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
90         { TVP7002_HPLL_PHASE_SEL, 0x80, TVP7002_WRITE },
91         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
92         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
93         { TVP7002_HSYNC_OUT_W, 0x60, TVP7002_WRITE },
94         { TVP7002_B_FINE_GAIN, 0x00, TVP7002_WRITE },
95         { TVP7002_G_FINE_GAIN, 0x00, TVP7002_WRITE },
96         { TVP7002_R_FINE_GAIN, 0x00, TVP7002_WRITE },
97         { TVP7002_B_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
98         { TVP7002_G_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
99         { TVP7002_R_FINE_OFF_MSBS, 0x80, TVP7002_WRITE },
100         { TVP7002_SYNC_CTL_1, 0x20, TVP7002_WRITE },
101         { TVP7002_HPLL_AND_CLAMP_CTL, 0x2e, TVP7002_WRITE },
102         { TVP7002_SYNC_ON_G_THRS, 0x5d, TVP7002_WRITE },
103         { TVP7002_SYNC_SEPARATOR_THRS, 0x47, TVP7002_WRITE },
104         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
105         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
106         { TVP7002_SYNC_DETECT_STAT, 0xff, TVP7002_READ },
107         { TVP7002_OUT_FORMATTER, 0x47, TVP7002_WRITE },
108         { TVP7002_MISC_CTL_1, 0x01, TVP7002_WRITE },
109         { TVP7002_MISC_CTL_2, 0x00, TVP7002_WRITE },
110         { TVP7002_MISC_CTL_3, 0x01, TVP7002_WRITE },
111         { TVP7002_IN_MUX_SEL_1, 0x00, TVP7002_WRITE },
112         { TVP7002_IN_MUX_SEL_2, 0x67, TVP7002_WRITE },
113         { TVP7002_B_AND_G_COARSE_GAIN, 0x77, TVP7002_WRITE },
114         { TVP7002_R_COARSE_GAIN, 0x07, TVP7002_WRITE },
115         { TVP7002_FINE_OFF_LSBS, 0x00, TVP7002_WRITE },
116         { TVP7002_B_COARSE_OFF, 0x10, TVP7002_WRITE },
117         { TVP7002_G_COARSE_OFF, 0x10, TVP7002_WRITE },
118         { TVP7002_R_COARSE_OFF, 0x10, TVP7002_WRITE },
119         { TVP7002_HSOUT_OUT_START, 0x08, TVP7002_WRITE },
120         { TVP7002_MISC_CTL_4, 0x00, TVP7002_WRITE },
121         { TVP7002_B_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
122         { TVP7002_G_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
123         { TVP7002_R_DGTL_ALC_OUT_LSBS, 0xff, TVP7002_READ },
124         { TVP7002_AUTO_LVL_CTL_ENABLE, 0x80, TVP7002_WRITE },
125         { TVP7002_DGTL_ALC_OUT_MSBS, 0xff, TVP7002_READ },
126         { TVP7002_AUTO_LVL_CTL_FILTER, 0x53, TVP7002_WRITE },
127         { 0x29, 0x08, TVP7002_RESERVED },
128         { TVP7002_FINE_CLAMP_CTL, 0x07, TVP7002_WRITE },
129         /* PWR_CTL is controlled only by the probe and reset functions */
130         { TVP7002_PWR_CTL, 0x00, TVP7002_RESERVED },
131         { TVP7002_ADC_SETUP, 0x50, TVP7002_WRITE },
132         { TVP7002_COARSE_CLAMP_CTL, 0x00, TVP7002_WRITE },
133         { TVP7002_SOG_CLAMP, 0x80, TVP7002_WRITE },
134         { TVP7002_RGB_COARSE_CLAMP_CTL, 0x8c, TVP7002_WRITE },
135         { TVP7002_SOG_COARSE_CLAMP_CTL, 0x04, TVP7002_WRITE },
136         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
137         { 0x32, 0x18, TVP7002_RESERVED },
138         { 0x33, 0x60, TVP7002_RESERVED },
139         { TVP7002_MVIS_STRIPPER_W, 0xff, TVP7002_RESERVED },
140         { TVP7002_VSYNC_ALGN, 0x10, TVP7002_WRITE },
141         { TVP7002_SYNC_BYPASS, 0x00, TVP7002_WRITE },
142         { TVP7002_L_FRAME_STAT_LSBS, 0xff, TVP7002_READ },
143         { TVP7002_L_FRAME_STAT_MSBS, 0xff, TVP7002_READ },
144         { TVP7002_CLK_L_STAT_LSBS, 0xff, TVP7002_READ },
145         { TVP7002_CLK_L_STAT_MSBS, 0xff, TVP7002_READ },
146         { TVP7002_HSYNC_W, 0xff, TVP7002_READ },
147         { TVP7002_VSYNC_W, 0xff, TVP7002_READ },
148         { TVP7002_L_LENGTH_TOL, 0x03, TVP7002_WRITE },
149         { 0x3e, 0x60, TVP7002_RESERVED },
150         { TVP7002_VIDEO_BWTH_CTL, 0x01, TVP7002_WRITE },
151         { TVP7002_AVID_START_PIXEL_LSBS, 0x01, TVP7002_WRITE },
152         { TVP7002_AVID_START_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
153         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x06, TVP7002_WRITE },
154         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x2c, TVP7002_WRITE },
155         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
156         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
157         { TVP7002_VBLK_F_0_DURATION, 0x1e, TVP7002_WRITE },
158         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
159         { TVP7002_FBIT_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
160         { TVP7002_FBIT_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
161         { TVP7002_YUV_Y_G_COEF_LSBS, 0xe3, TVP7002_WRITE },
162         { TVP7002_YUV_Y_G_COEF_MSBS, 0x16, TVP7002_WRITE },
163         { TVP7002_YUV_Y_B_COEF_LSBS, 0x4f, TVP7002_WRITE },
164         { TVP7002_YUV_Y_B_COEF_MSBS, 0x02, TVP7002_WRITE },
165         { TVP7002_YUV_Y_R_COEF_LSBS, 0xce, TVP7002_WRITE },
166         { TVP7002_YUV_Y_R_COEF_MSBS, 0x06, TVP7002_WRITE },
167         { TVP7002_YUV_U_G_COEF_LSBS, 0xab, TVP7002_WRITE },
168         { TVP7002_YUV_U_G_COEF_MSBS, 0xf3, TVP7002_WRITE },
169         { TVP7002_YUV_U_B_COEF_LSBS, 0x00, TVP7002_WRITE },
170         { TVP7002_YUV_U_B_COEF_MSBS, 0x10, TVP7002_WRITE },
171         { TVP7002_YUV_U_R_COEF_LSBS, 0x55, TVP7002_WRITE },
172         { TVP7002_YUV_U_R_COEF_MSBS, 0xfc, TVP7002_WRITE },
173         { TVP7002_YUV_V_G_COEF_LSBS, 0x78, TVP7002_WRITE },
174         { TVP7002_YUV_V_G_COEF_MSBS, 0xf1, TVP7002_WRITE },
175         { TVP7002_YUV_V_B_COEF_LSBS, 0x88, TVP7002_WRITE },
176         { TVP7002_YUV_V_B_COEF_MSBS, 0xfe, TVP7002_WRITE },
177         { TVP7002_YUV_V_R_COEF_LSBS, 0x00, TVP7002_WRITE },
178         { TVP7002_YUV_V_R_COEF_MSBS, 0x10, TVP7002_WRITE },
179         /* This signals end of register values */
180         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
181 };
182
183 /* Register parameters for 480P */
184 static const struct i2c_reg_value tvp7002_parms_480P[] = {
185         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x35, TVP7002_WRITE },
186         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xa0, TVP7002_WRITE },
187         { TVP7002_HPLL_CRTL, 0x02, TVP7002_WRITE },
188         { TVP7002_AVID_START_PIXEL_LSBS, 0x91, TVP7002_WRITE },
189         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
190         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0B, TVP7002_WRITE },
191         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
192         { TVP7002_VBLK_F_0_START_L_OFF, 0x03, TVP7002_WRITE },
193         { TVP7002_VBLK_F_1_START_L_OFF, 0x01, TVP7002_WRITE },
194         { TVP7002_VBLK_F_0_DURATION, 0x13, TVP7002_WRITE },
195         { TVP7002_VBLK_F_1_DURATION, 0x13, TVP7002_WRITE },
196         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
197         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
198         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
199         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
200         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
201         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
202 };
203
204 /* Register parameters for 576P */
205 static const struct i2c_reg_value tvp7002_parms_576P[] = {
206         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x36, TVP7002_WRITE },
207         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
208         { TVP7002_HPLL_CRTL, 0x18, TVP7002_WRITE },
209         { TVP7002_AVID_START_PIXEL_LSBS, 0x9B, TVP7002_WRITE },
210         { TVP7002_AVID_START_PIXEL_MSBS, 0x00, TVP7002_WRITE },
211         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x0F, TVP7002_WRITE },
212         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x00, TVP7002_WRITE },
213         { TVP7002_VBLK_F_0_START_L_OFF, 0x00, TVP7002_WRITE },
214         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
215         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
216         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
217         { TVP7002_ALC_PLACEMENT, 0x18, TVP7002_WRITE },
218         { TVP7002_CLAMP_START, 0x06, TVP7002_WRITE },
219         { TVP7002_CLAMP_W, 0x10, TVP7002_WRITE },
220         { TVP7002_HPLL_PRE_COAST, 0x03, TVP7002_WRITE },
221         { TVP7002_HPLL_POST_COAST, 0x03, TVP7002_WRITE },
222         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
223 };
224
225 /* Register parameters for 1080I60 */
226 static const struct i2c_reg_value tvp7002_parms_1080I60[] = {
227         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
228         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
229         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
230         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
231         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
232         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
233         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
234         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
235         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
236         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
237         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
238         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
239         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
240         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
241         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
242         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
243         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
244 };
245
246 /* Register parameters for 1080P60 */
247 static const struct i2c_reg_value tvp7002_parms_1080P60[] = {
248         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x89, TVP7002_WRITE },
249         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x80, TVP7002_WRITE },
250         { TVP7002_HPLL_CRTL, 0xE0, TVP7002_WRITE },
251         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
252         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
253         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
254         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
255         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
256         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
257         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
258         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
259         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
260         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
261         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
262         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
263         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
264         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
265 };
266
267 /* Register parameters for 1080I50 */
268 static const struct i2c_reg_value tvp7002_parms_1080I50[] = {
269         { TVP7002_HPLL_FDBK_DIV_MSBS, 0xa5, TVP7002_WRITE },
270         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x00, TVP7002_WRITE },
271         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
272         { TVP7002_AVID_START_PIXEL_LSBS, 0x06, TVP7002_WRITE },
273         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
274         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x8a, TVP7002_WRITE },
275         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x08, TVP7002_WRITE },
276         { TVP7002_VBLK_F_0_START_L_OFF, 0x02, TVP7002_WRITE },
277         { TVP7002_VBLK_F_1_START_L_OFF, 0x02, TVP7002_WRITE },
278         { TVP7002_VBLK_F_0_DURATION, 0x16, TVP7002_WRITE },
279         { TVP7002_VBLK_F_1_DURATION, 0x17, TVP7002_WRITE },
280         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
281         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
282         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
283         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
284         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
285         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
286 };
287
288 /* Register parameters for 720P60 */
289 static const struct i2c_reg_value tvp7002_parms_720P60[] = {
290         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x67, TVP7002_WRITE },
291         { TVP7002_HPLL_FDBK_DIV_LSBS, 0x20, TVP7002_WRITE },
292         { TVP7002_HPLL_CRTL, 0xa0, TVP7002_WRITE },
293         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
294         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
295         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
296         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
297         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
298         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
299         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
300         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
301         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
302         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
303         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
304         { TVP7002_HPLL_PRE_COAST, 0x00, TVP7002_WRITE },
305         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
306         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
307 };
308
309 /* Register parameters for 720P50 */
310 static const struct i2c_reg_value tvp7002_parms_720P50[] = {
311         { TVP7002_HPLL_FDBK_DIV_MSBS, 0x7b, TVP7002_WRITE },
312         { TVP7002_HPLL_FDBK_DIV_LSBS, 0xc0, TVP7002_WRITE },
313         { TVP7002_HPLL_CRTL, 0x98, TVP7002_WRITE },
314         { TVP7002_AVID_START_PIXEL_LSBS, 0x47, TVP7002_WRITE },
315         { TVP7002_AVID_START_PIXEL_MSBS, 0x01, TVP7002_WRITE },
316         { TVP7002_AVID_STOP_PIXEL_LSBS, 0x4B, TVP7002_WRITE },
317         { TVP7002_AVID_STOP_PIXEL_MSBS, 0x06, TVP7002_WRITE },
318         { TVP7002_VBLK_F_0_START_L_OFF, 0x05, TVP7002_WRITE },
319         { TVP7002_VBLK_F_1_START_L_OFF, 0x00, TVP7002_WRITE },
320         { TVP7002_VBLK_F_0_DURATION, 0x2D, TVP7002_WRITE },
321         { TVP7002_VBLK_F_1_DURATION, 0x00, TVP7002_WRITE },
322         { TVP7002_ALC_PLACEMENT, 0x5a, TVP7002_WRITE },
323         { TVP7002_CLAMP_START, 0x32, TVP7002_WRITE },
324         { TVP7002_CLAMP_W, 0x20, TVP7002_WRITE },
325         { TVP7002_HPLL_PRE_COAST, 0x01, TVP7002_WRITE },
326         { TVP7002_HPLL_POST_COAST, 0x00, TVP7002_WRITE },
327         { TVP7002_EOR, 0xff, TVP7002_RESERVED }
328 };
329
330 /* Timings definition for handling device operation */
331 struct tvp7002_timings_definition {
332         struct v4l2_dv_timings timings;
333         const struct i2c_reg_value *p_settings;
334         enum v4l2_colorspace color_space;
335         enum v4l2_field scanmode;
336         u16 progressive;
337         u16 lines_per_frame;
338         u16 cpl_min;
339         u16 cpl_max;
340 };
341
342 /* Struct list for digital video timings */
343 static const struct tvp7002_timings_definition tvp7002_timings[] = {
344         {
345                 V4L2_DV_BT_CEA_1280X720P60,
346                 tvp7002_parms_720P60,
347                 V4L2_COLORSPACE_REC709,
348                 V4L2_FIELD_NONE,
349                 1,
350                 0x2EE,
351                 135,
352                 153
353         },
354         {
355                 V4L2_DV_BT_CEA_1920X1080I60,
356                 tvp7002_parms_1080I60,
357                 V4L2_COLORSPACE_REC709,
358                 V4L2_FIELD_INTERLACED,
359                 0,
360                 0x465,
361                 181,
362                 205
363         },
364         {
365                 V4L2_DV_BT_CEA_1920X1080I50,
366                 tvp7002_parms_1080I50,
367                 V4L2_COLORSPACE_REC709,
368                 V4L2_FIELD_INTERLACED,
369                 0,
370                 0x465,
371                 217,
372                 245
373         },
374         {
375                 V4L2_DV_BT_CEA_1280X720P50,
376                 tvp7002_parms_720P50,
377                 V4L2_COLORSPACE_REC709,
378                 V4L2_FIELD_NONE,
379                 1,
380                 0x2EE,
381                 163,
382                 183
383         },
384         {
385                 V4L2_DV_BT_CEA_1920X1080P60,
386                 tvp7002_parms_1080P60,
387                 V4L2_COLORSPACE_REC709,
388                 V4L2_FIELD_NONE,
389                 1,
390                 0x465,
391                 90,
392                 102
393         },
394         {
395                 V4L2_DV_BT_CEA_720X480P59_94,
396                 tvp7002_parms_480P,
397                 V4L2_COLORSPACE_SMPTE170M,
398                 V4L2_FIELD_NONE,
399                 1,
400                 0x20D,
401                 0xffff,
402                 0xffff
403         },
404         {
405                 V4L2_DV_BT_CEA_720X576P50,
406                 tvp7002_parms_576P,
407                 V4L2_COLORSPACE_SMPTE170M,
408                 V4L2_FIELD_NONE,
409                 1,
410                 0x271,
411                 0xffff,
412                 0xffff
413         }
414 };
415
416 #define NUM_TIMINGS ARRAY_SIZE(tvp7002_timings)
417
418 /* Device definition */
419 struct tvp7002 {
420         struct v4l2_subdev sd;
421         struct v4l2_ctrl_handler hdl;
422         const struct tvp7002_config *pdata;
423
424         int ver;
425         int streaming;
426
427         const struct tvp7002_timings_definition *current_timings;
428         struct media_pad pad;
429 };
430
431 /*
432  * to_tvp7002 - Obtain device handler TVP7002
433  * @sd: ptr to v4l2_subdev struct
434  *
435  * Returns device handler tvp7002.
436  */
437 static inline struct tvp7002 *to_tvp7002(struct v4l2_subdev *sd)
438 {
439         return container_of(sd, struct tvp7002, sd);
440 }
441
442 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
443 {
444         return &container_of(ctrl->handler, struct tvp7002, hdl)->sd;
445 }
446
447 /*
448  * tvp7002_read - Read a value from a register in an TVP7002
449  * @sd: ptr to v4l2_subdev struct
450  * @addr: TVP7002 register address
451  * @dst: pointer to 8-bit destination
452  *
453  * Returns value read if successful, or non-zero (-1) otherwise.
454  */
455 static int tvp7002_read(struct v4l2_subdev *sd, u8 addr, u8 *dst)
456 {
457         struct i2c_client *c = v4l2_get_subdevdata(sd);
458         int retry;
459         int error;
460
461         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
462                 error = i2c_smbus_read_byte_data(c, addr);
463
464                 if (error >= 0) {
465                         *dst = (u8)error;
466                         return 0;
467                 }
468
469                 msleep_interruptible(10);
470         }
471         v4l2_err(sd, "TVP7002 read error %d\n", error);
472         return error;
473 }
474
475 /*
476  * tvp7002_read_err() - Read a register value with error code
477  * @sd: pointer to standard V4L2 sub-device structure
478  * @reg: destination register
479  * @val: value to be read
480  * @err: pointer to error value
481  *
482  * Read a value in a register and save error value in pointer.
483  * Also update the register table if successful
484  */
485 static inline void tvp7002_read_err(struct v4l2_subdev *sd, u8 reg,
486                                                         u8 *dst, int *err)
487 {
488         if (!*err)
489                 *err = tvp7002_read(sd, reg, dst);
490 }
491
492 /*
493  * tvp7002_write() - Write a value to a register in TVP7002
494  * @sd: ptr to v4l2_subdev struct
495  * @addr: TVP7002 register address
496  * @value: value to be written to the register
497  *
498  * Write a value to a register in an TVP7002 decoder device.
499  * Returns zero if successful, or non-zero otherwise.
500  */
501 static int tvp7002_write(struct v4l2_subdev *sd, u8 addr, u8 value)
502 {
503         struct i2c_client *c;
504         int retry;
505         int error;
506
507         c = v4l2_get_subdevdata(sd);
508
509         for (retry = 0; retry < I2C_RETRY_COUNT; retry++) {
510                 error = i2c_smbus_write_byte_data(c, addr, value);
511
512                 if (error >= 0)
513                         return 0;
514
515                 v4l2_warn(sd, "Write: retry ... %d\n", retry);
516                 msleep_interruptible(10);
517         }
518         v4l2_err(sd, "TVP7002 write error %d\n", error);
519         return error;
520 }
521
522 /*
523  * tvp7002_write_err() - Write a register value with error code
524  * @sd: pointer to standard V4L2 sub-device structure
525  * @reg: destination register
526  * @val: value to be written
527  * @err: pointer to error value
528  *
529  * Write a value in a register and save error value in pointer.
530  * Also update the register table if successful
531  */
532 static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
533                                                         u8 val, int *err)
534 {
535         if (!*err)
536                 *err = tvp7002_write(sd, reg, val);
537 }
538
539 /*
540  * tvp7002_write_inittab() - Write initialization values
541  * @sd: ptr to v4l2_subdev struct
542  * @regs: ptr to i2c_reg_value struct
543  *
544  * Write initialization values.
545  * Returns zero or -EINVAL if read operation fails.
546  */
547 static int tvp7002_write_inittab(struct v4l2_subdev *sd,
548                                         const struct i2c_reg_value *regs)
549 {
550         int error = 0;
551
552         /* Initialize the first (defined) registers */
553         while (TVP7002_EOR != regs->reg) {
554                 if (TVP7002_WRITE == regs->type)
555                         tvp7002_write_err(sd, regs->reg, regs->value, &error);
556                 regs++;
557         }
558
559         return error;
560 }
561
562 static int tvp7002_s_dv_timings(struct v4l2_subdev *sd,
563                                         struct v4l2_dv_timings *dv_timings)
564 {
565         struct tvp7002 *device = to_tvp7002(sd);
566         const struct v4l2_bt_timings *bt = &dv_timings->bt;
567         int i;
568
569         if (dv_timings->type != V4L2_DV_BT_656_1120)
570                 return -EINVAL;
571         for (i = 0; i < NUM_TIMINGS; i++) {
572                 const struct v4l2_bt_timings *t = &tvp7002_timings[i].timings.bt;
573
574                 if (!memcmp(bt, t, &bt->standards - &bt->width)) {
575                         device->current_timings = &tvp7002_timings[i];
576                         return tvp7002_write_inittab(sd, tvp7002_timings[i].p_settings);
577                 }
578         }
579         return -EINVAL;
580 }
581
582 static int tvp7002_g_dv_timings(struct v4l2_subdev *sd,
583                                         struct v4l2_dv_timings *dv_timings)
584 {
585         struct tvp7002 *device = to_tvp7002(sd);
586
587         *dv_timings = device->current_timings->timings;
588         return 0;
589 }
590
591 /*
592  * tvp7002_s_ctrl() - Set a control
593  * @ctrl: ptr to v4l2_ctrl struct
594  *
595  * Set a control in TVP7002 decoder device.
596  * Returns zero when successful or -EINVAL if register access fails.
597  */
598 static int tvp7002_s_ctrl(struct v4l2_ctrl *ctrl)
599 {
600         struct v4l2_subdev *sd = to_sd(ctrl);
601         int error = 0;
602
603         switch (ctrl->id) {
604         case V4L2_CID_GAIN:
605                 tvp7002_write_err(sd, TVP7002_R_FINE_GAIN, ctrl->val, &error);
606                 tvp7002_write_err(sd, TVP7002_G_FINE_GAIN, ctrl->val, &error);
607                 tvp7002_write_err(sd, TVP7002_B_FINE_GAIN, ctrl->val, &error);
608                 return error;
609         }
610         return -EINVAL;
611 }
612
613 /*
614  * tvp7002_mbus_fmt() - V4L2 decoder interface handler for try/s/g_mbus_fmt
615  * @sd: pointer to standard V4L2 sub-device structure
616  * @f: pointer to mediabus format structure
617  *
618  * Negotiate the image capture size and mediabus format.
619  * There is only one possible format, so this single function works for
620  * get, set and try.
621  */
622 static int tvp7002_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *f)
623 {
624         struct tvp7002 *device = to_tvp7002(sd);
625         const struct v4l2_bt_timings *bt = &device->current_timings->timings.bt;
626
627         f->width = bt->width;
628         f->height = bt->height;
629         f->code = V4L2_MBUS_FMT_YUYV10_1X20;
630         f->field = device->current_timings->scanmode;
631         f->colorspace = device->current_timings->color_space;
632
633         v4l2_dbg(1, debug, sd, "MBUS_FMT: Width - %d, Height - %d",
634                         f->width, f->height);
635         return 0;
636 }
637
638 /*
639  * tvp7002_query_dv() - query DV timings
640  * @sd: pointer to standard V4L2 sub-device structure
641  * @index: index into the tvp7002_timings array
642  *
643  * Returns the current DV timings detected by TVP7002. If no active input is
644  * detected, returns -EINVAL
645  */
646 static int tvp7002_query_dv(struct v4l2_subdev *sd, int *index)
647 {
648         const struct tvp7002_timings_definition *timings = tvp7002_timings;
649         u8 progressive;
650         u32 lpfr;
651         u32 cpln;
652         int error = 0;
653         u8 lpf_lsb;
654         u8 lpf_msb;
655         u8 cpl_lsb;
656         u8 cpl_msb;
657
658         /* Return invalid index if no active input is detected */
659         *index = NUM_TIMINGS;
660
661         /* Read standards from device registers */
662         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_LSBS, &lpf_lsb, &error);
663         tvp7002_read_err(sd, TVP7002_L_FRAME_STAT_MSBS, &lpf_msb, &error);
664
665         if (error < 0)
666                 return error;
667
668         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_LSBS, &cpl_lsb, &error);
669         tvp7002_read_err(sd, TVP7002_CLK_L_STAT_MSBS, &cpl_msb, &error);
670
671         if (error < 0)
672                 return error;
673
674         /* Get lines per frame, clocks per line and interlaced/progresive */
675         lpfr = lpf_lsb | ((TVP7002_CL_MASK & lpf_msb) << TVP7002_CL_SHIFT);
676         cpln = cpl_lsb | ((TVP7002_CL_MASK & cpl_msb) << TVP7002_CL_SHIFT);
677         progressive = (lpf_msb & TVP7002_INPR_MASK) >> TVP7002_IP_SHIFT;
678
679         /* Do checking of video modes */
680         for (*index = 0; *index < NUM_TIMINGS; (*index)++, timings++)
681                 if (lpfr == timings->lines_per_frame &&
682                         progressive == timings->progressive) {
683                         if (timings->cpl_min == 0xffff)
684                                 break;
685                         if (cpln >= timings->cpl_min && cpln <= timings->cpl_max)
686                                 break;
687                 }
688
689         if (*index == NUM_TIMINGS) {
690                 v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
691                                                                 lpfr, cpln);
692                 return -ENOLINK;
693         }
694
695         /* Update lines per frame and clocks per line info */
696         v4l2_dbg(1, debug, sd, "detected timings: %d\n", *index);
697         return 0;
698 }
699
700 static int tvp7002_query_dv_timings(struct v4l2_subdev *sd,
701                                         struct v4l2_dv_timings *timings)
702 {
703         int index;
704         int err = tvp7002_query_dv(sd, &index);
705
706         if (err)
707                 return err;
708         *timings = tvp7002_timings[index].timings;
709         return 0;
710 }
711
712 #ifdef CONFIG_VIDEO_ADV_DEBUG
713 /*
714  * tvp7002_g_register() - Get the value of a register
715  * @sd: ptr to v4l2_subdev struct
716  * @reg: ptr to v4l2_dbg_register struct
717  *
718  * Get the value of a TVP7002 decoder device register.
719  * Returns zero when successful, -EINVAL if register read fails or
720  * access to I2C client fails.
721  */
722 static int tvp7002_g_register(struct v4l2_subdev *sd,
723                                                 struct v4l2_dbg_register *reg)
724 {
725         u8 val;
726         int ret;
727
728         ret = tvp7002_read(sd, reg->reg & 0xff, &val);
729         reg->val = val;
730         reg->size = 1;
731         return ret;
732 }
733
734 /*
735  * tvp7002_s_register() - set a control
736  * @sd: ptr to v4l2_subdev struct
737  * @reg: ptr to v4l2_dbg_register struct
738  *
739  * Get the value of a TVP7002 decoder device register.
740  * Returns zero when successful, -EINVAL if register read fails.
741  */
742 static int tvp7002_s_register(struct v4l2_subdev *sd,
743                                                 const struct v4l2_dbg_register *reg)
744 {
745         return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
746 }
747 #endif
748
749 /*
750  * tvp7002_enum_mbus_fmt() - Enum supported mediabus formats
751  * @sd: pointer to standard V4L2 sub-device structure
752  * @index: format index
753  * @code: pointer to mediabus format
754  *
755  * Enumerate supported mediabus formats.
756  */
757
758 static int tvp7002_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned index,
759                                         enum v4l2_mbus_pixelcode *code)
760 {
761         /* Check requested format index is within range */
762         if (index)
763                 return -EINVAL;
764         *code = V4L2_MBUS_FMT_YUYV10_1X20;
765         return 0;
766 }
767
768 /*
769  * tvp7002_s_stream() - V4L2 decoder i/f handler for s_stream
770  * @sd: pointer to standard V4L2 sub-device structure
771  * @enable: streaming enable or disable
772  *
773  * Sets streaming to enable or disable, if possible.
774  */
775 static int tvp7002_s_stream(struct v4l2_subdev *sd, int enable)
776 {
777         struct tvp7002 *device = to_tvp7002(sd);
778         int error = 0;
779
780         if (device->streaming == enable)
781                 return 0;
782
783         if (enable) {
784                 /* Set output state on (low impedance means stream on) */
785                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x00);
786                 device->streaming = enable;
787         } else {
788                 /* Set output state off (high impedance means stream off) */
789                 error = tvp7002_write(sd, TVP7002_MISC_CTL_2, 0x03);
790                 if (error)
791                         v4l2_dbg(1, debug, sd, "Unable to stop streaming\n");
792
793                 device->streaming = enable;
794         }
795
796         return error;
797 }
798
799 /*
800  * tvp7002_log_status() - Print information about register settings
801  * @sd: ptr to v4l2_subdev struct
802  *
803  * Log register values of a TVP7002 decoder device.
804  * Returns zero or -EINVAL if read operation fails.
805  */
806 static int tvp7002_log_status(struct v4l2_subdev *sd)
807 {
808         struct tvp7002 *device = to_tvp7002(sd);
809         const struct v4l2_bt_timings *bt;
810         int detected;
811
812         /* Find my current timings */
813         tvp7002_query_dv(sd, &detected);
814
815         bt = &device->current_timings->timings.bt;
816         v4l2_info(sd, "Selected DV Timings: %ux%u\n", bt->width, bt->height);
817         if (detected == NUM_TIMINGS) {
818                 v4l2_info(sd, "Detected DV Timings: None\n");
819         } else {
820                 bt = &tvp7002_timings[detected].timings.bt;
821                 v4l2_info(sd, "Detected DV Timings: %ux%u\n",
822                                 bt->width, bt->height);
823         }
824         v4l2_info(sd, "Streaming enabled: %s\n",
825                                         device->streaming ? "yes" : "no");
826
827         /* Print the current value of the gain control */
828         v4l2_ctrl_handler_log_status(&device->hdl, sd->name);
829
830         return 0;
831 }
832
833 static int tvp7002_enum_dv_timings(struct v4l2_subdev *sd,
834                 struct v4l2_enum_dv_timings *timings)
835 {
836         /* Check requested format index is within range */
837         if (timings->index >= NUM_TIMINGS)
838                 return -EINVAL;
839
840         timings->timings = tvp7002_timings[timings->index].timings;
841         return 0;
842 }
843
844 static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
845         .s_ctrl = tvp7002_s_ctrl,
846 };
847
848 /*
849  * tvp7002_enum_mbus_code() - Enum supported digital video format on pad
850  * @sd: pointer to standard V4L2 sub-device structure
851  * @fh: file handle for the subdev
852  * @code: pointer to subdev enum mbus code struct
853  *
854  * Enumerate supported digital video formats for pad.
855  */
856 static int
857 tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
858                        struct v4l2_subdev_mbus_code_enum *code)
859 {
860         /* Check requested format index is within range */
861         if (code->index != 0)
862                 return -EINVAL;
863
864         code->code = V4L2_MBUS_FMT_YUYV10_1X20;
865
866         return 0;
867 }
868
869 /*
870  * tvp7002_get_pad_format() - get video format on pad
871  * @sd: pointer to standard V4L2 sub-device structure
872  * @fh: file handle for the subdev
873  * @fmt: pointer to subdev format struct
874  *
875  * get video format for pad.
876  */
877 static int
878 tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
879                        struct v4l2_subdev_format *fmt)
880 {
881         struct tvp7002 *tvp7002 = to_tvp7002(sd);
882
883         fmt->format.code = V4L2_MBUS_FMT_YUYV10_1X20;
884         fmt->format.width = tvp7002->current_timings->timings.bt.width;
885         fmt->format.height = tvp7002->current_timings->timings.bt.height;
886         fmt->format.field = tvp7002->current_timings->scanmode;
887         fmt->format.colorspace = tvp7002->current_timings->color_space;
888
889         return 0;
890 }
891
892 /*
893  * tvp7002_set_pad_format() - set video format on pad
894  * @sd: pointer to standard V4L2 sub-device structure
895  * @fh: file handle for the subdev
896  * @fmt: pointer to subdev format struct
897  *
898  * set video format for pad.
899  */
900 static int
901 tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
902                        struct v4l2_subdev_format *fmt)
903 {
904         return tvp7002_get_pad_format(sd, fh, fmt);
905 }
906
907 /* V4L2 core operation handlers */
908 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
909         .log_status = tvp7002_log_status,
910         .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
911         .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
912         .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
913         .g_ctrl = v4l2_subdev_g_ctrl,
914         .s_ctrl = v4l2_subdev_s_ctrl,
915         .queryctrl = v4l2_subdev_queryctrl,
916         .querymenu = v4l2_subdev_querymenu,
917 #ifdef CONFIG_VIDEO_ADV_DEBUG
918         .g_register = tvp7002_g_register,
919         .s_register = tvp7002_s_register,
920 #endif
921 };
922
923 /* Specific video subsystem operation handlers */
924 static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
925         .g_dv_timings = tvp7002_g_dv_timings,
926         .s_dv_timings = tvp7002_s_dv_timings,
927         .enum_dv_timings = tvp7002_enum_dv_timings,
928         .query_dv_timings = tvp7002_query_dv_timings,
929         .s_stream = tvp7002_s_stream,
930         .g_mbus_fmt = tvp7002_mbus_fmt,
931         .try_mbus_fmt = tvp7002_mbus_fmt,
932         .s_mbus_fmt = tvp7002_mbus_fmt,
933         .enum_mbus_fmt = tvp7002_enum_mbus_fmt,
934 };
935
936 /* media pad related operation handlers */
937 static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
938         .enum_mbus_code = tvp7002_enum_mbus_code,
939         .get_fmt = tvp7002_get_pad_format,
940         .set_fmt = tvp7002_set_pad_format,
941 };
942
943 /* V4L2 top level operation handlers */
944 static const struct v4l2_subdev_ops tvp7002_ops = {
945         .core = &tvp7002_core_ops,
946         .video = &tvp7002_video_ops,
947         .pad = &tvp7002_pad_ops,
948 };
949
950 static struct tvp7002_config *
951 tvp7002_get_pdata(struct i2c_client *client)
952 {
953         struct v4l2_of_endpoint bus_cfg;
954         struct tvp7002_config *pdata;
955         struct device_node *endpoint;
956         unsigned int flags;
957
958         if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
959                 return client->dev.platform_data;
960
961         endpoint = of_graph_get_next_endpoint(client->dev.of_node, NULL);
962         if (!endpoint)
963                 return NULL;
964
965         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
966         if (!pdata)
967                 goto done;
968
969         v4l2_of_parse_endpoint(endpoint, &bus_cfg);
970         flags = bus_cfg.bus.parallel.flags;
971
972         if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
973                 pdata->hs_polarity = 1;
974
975         if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
976                 pdata->vs_polarity = 1;
977
978         if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
979                 pdata->clk_polarity = 1;
980
981         if (flags & V4L2_MBUS_FIELD_EVEN_HIGH)
982                 pdata->fid_polarity = 1;
983
984         if (flags & V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH)
985                 pdata->sog_polarity = 1;
986
987 done:
988         of_node_put(endpoint);
989         return pdata;
990 }
991
992 /*
993  * tvp7002_probe - Probe a TVP7002 device
994  * @c: ptr to i2c_client struct
995  * @id: ptr to i2c_device_id struct
996  *
997  * Initialize the TVP7002 device
998  * Returns zero when successful, -EINVAL if register read fails or
999  * -EIO if i2c access is not available.
1000  */
1001 static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
1002 {
1003         struct tvp7002_config *pdata = tvp7002_get_pdata(c);
1004         struct v4l2_subdev *sd;
1005         struct tvp7002 *device;
1006         struct v4l2_dv_timings timings;
1007         int polarity_a;
1008         int polarity_b;
1009         u8 revision;
1010         int error;
1011
1012         if (pdata == NULL) {
1013                 dev_err(&c->dev, "No platform data\n");
1014                 return -EINVAL;
1015         }
1016
1017         /* Check if the adapter supports the needed features */
1018         if (!i2c_check_functionality(c->adapter,
1019                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
1020                 return -EIO;
1021
1022         device = devm_kzalloc(&c->dev, sizeof(struct tvp7002), GFP_KERNEL);
1023
1024         if (!device)
1025                 return -ENOMEM;
1026
1027         sd = &device->sd;
1028         device->pdata = pdata;
1029         device->current_timings = tvp7002_timings;
1030
1031         /* Tell v4l2 the device is ready */
1032         v4l2_i2c_subdev_init(sd, c, &tvp7002_ops);
1033         v4l_info(c, "tvp7002 found @ 0x%02x (%s)\n",
1034                                         c->addr, c->adapter->name);
1035
1036         error = tvp7002_read(sd, TVP7002_CHIP_REV, &revision);
1037         if (error < 0)
1038                 return error;
1039
1040         /* Get revision number */
1041         v4l2_info(sd, "Rev. %02x detected.\n", revision);
1042         if (revision != 0x02)
1043                 v4l2_info(sd, "Unknown revision detected.\n");
1044
1045         /* Initializes TVP7002 to its default values */
1046         error = tvp7002_write_inittab(sd, tvp7002_init_default);
1047
1048         if (error < 0)
1049                 return error;
1050
1051         /* Set polarity information after registers have been set */
1052         polarity_a = 0x20 | device->pdata->hs_polarity << 5
1053                         | device->pdata->vs_polarity << 2;
1054         error = tvp7002_write(sd, TVP7002_SYNC_CTL_1, polarity_a);
1055         if (error < 0)
1056                 return error;
1057
1058         polarity_b = 0x01  | device->pdata->fid_polarity << 2
1059                         | device->pdata->sog_polarity << 1
1060                         | device->pdata->clk_polarity;
1061         error = tvp7002_write(sd, TVP7002_MISC_CTL_3, polarity_b);
1062         if (error < 0)
1063                 return error;
1064
1065         /* Set registers according to default video mode */
1066         timings = device->current_timings->timings;
1067         error = tvp7002_s_dv_timings(sd, &timings);
1068
1069 #if defined(CONFIG_MEDIA_CONTROLLER)
1070         device->pad.flags = MEDIA_PAD_FL_SOURCE;
1071         device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1072         device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
1073
1074         error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
1075         if (error < 0)
1076                 return error;
1077 #endif
1078
1079         v4l2_ctrl_handler_init(&device->hdl, 1);
1080         v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
1081                         V4L2_CID_GAIN, 0, 255, 1, 0);
1082         sd->ctrl_handler = &device->hdl;
1083         if (device->hdl.error) {
1084                 error = device->hdl.error;
1085                 goto error;
1086         }
1087         v4l2_ctrl_handler_setup(&device->hdl);
1088
1089         error = v4l2_async_register_subdev(&device->sd);
1090         if (error)
1091                 goto error;
1092
1093         return 0;
1094
1095 error:
1096         v4l2_ctrl_handler_free(&device->hdl);
1097 #if defined(CONFIG_MEDIA_CONTROLLER)
1098         media_entity_cleanup(&device->sd.entity);
1099 #endif
1100         return error;
1101 }
1102
1103 /*
1104  * tvp7002_remove - Remove TVP7002 device support
1105  * @c: ptr to i2c_client struct
1106  *
1107  * Reset the TVP7002 device
1108  * Returns zero.
1109  */
1110 static int tvp7002_remove(struct i2c_client *c)
1111 {
1112         struct v4l2_subdev *sd = i2c_get_clientdata(c);
1113         struct tvp7002 *device = to_tvp7002(sd);
1114
1115         v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
1116                                 "on address 0x%x\n", c->addr);
1117         v4l2_async_unregister_subdev(&device->sd);
1118 #if defined(CONFIG_MEDIA_CONTROLLER)
1119         media_entity_cleanup(&device->sd.entity);
1120 #endif
1121         v4l2_device_unregister_subdev(sd);
1122         v4l2_ctrl_handler_free(&device->hdl);
1123         return 0;
1124 }
1125
1126 /* I2C Device ID table */
1127 static const struct i2c_device_id tvp7002_id[] = {
1128         { "tvp7002", 0 },
1129         { }
1130 };
1131 MODULE_DEVICE_TABLE(i2c, tvp7002_id);
1132
1133 #if IS_ENABLED(CONFIG_OF)
1134 static const struct of_device_id tvp7002_of_match[] = {
1135         { .compatible = "ti,tvp7002", },
1136         { /* sentinel */ },
1137 };
1138 MODULE_DEVICE_TABLE(of, tvp7002_of_match);
1139 #endif
1140
1141 /* I2C driver data */
1142 static struct i2c_driver tvp7002_driver = {
1143         .driver = {
1144                 .of_match_table = of_match_ptr(tvp7002_of_match),
1145                 .owner = THIS_MODULE,
1146                 .name = TVP7002_MODULE_NAME,
1147         },
1148         .probe = tvp7002_probe,
1149         .remove = tvp7002_remove,
1150         .id_table = tvp7002_id,
1151 };
1152
1153 module_i2c_driver(tvp7002_driver);