1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2018 Intel Corporation
3
4 #include <linux/acpi.h>
5 #include <linux/clk.h>
6 #include <linux/delay.h>
7 #include <linux/i2c.h>
8 #include <linux/module.h>
9 #include <linux/pm_runtime.h>
10 #include <linux/regulator/consumer.h>
11 #include <media/v4l2-cci.h>
12 #include <media/v4l2-ctrls.h>
13 #include <media/v4l2-device.h>
14 #include <media/v4l2-fwnode.h>
15 #include <linux/unaligned.h>
16
17 #define IMX258_REG_MODE_SELECT CCI_REG8(0x0100)
18 #define IMX258_MODE_STANDBY 0x00
19 #define IMX258_MODE_STREAMING 0x01
20
21 #define IMX258_REG_RESET CCI_REG8(0x0103)
22
23 /* Chip ID */
24 #define IMX258_REG_CHIP_ID CCI_REG16(0x0016)
25 #define IMX258_CHIP_ID 0x0258
26
27 /* V_TIMING internal */
28 #define IMX258_VTS_30FPS 0x0c50
29 #define IMX258_VTS_30FPS_2K 0x0638
30 #define IMX258_VTS_30FPS_VGA 0x034c
31 #define IMX258_VTS_MAX 65525
32
33 /* HBLANK control - read only */
34 #define IMX258_PPL_DEFAULT 5352
35
36 /* Exposure control */
37 #define IMX258_REG_EXPOSURE CCI_REG16(0x0202)
38 #define IMX258_EXPOSURE_OFFSET 10
39 #define IMX258_EXPOSURE_MIN 4
40 #define IMX258_EXPOSURE_STEP 1
41 #define IMX258_EXPOSURE_DEFAULT 0x640
42 #define IMX258_EXPOSURE_MAX (IMX258_VTS_MAX - IMX258_EXPOSURE_OFFSET)
43
44 /* Analog gain control */
45 #define IMX258_REG_ANALOG_GAIN CCI_REG16(0x0204)
46 #define IMX258_ANA_GAIN_MIN 0
47 #define IMX258_ANA_GAIN_MAX 480
48 #define IMX258_ANA_GAIN_STEP 1
49 #define IMX258_ANA_GAIN_DEFAULT 0x0
50
51 /* Digital gain control */
52 #define IMX258_REG_GR_DIGITAL_GAIN CCI_REG16(0x020e)
53 #define IMX258_REG_R_DIGITAL_GAIN CCI_REG16(0x0210)
54 #define IMX258_REG_B_DIGITAL_GAIN CCI_REG16(0x0212)
55 #define IMX258_REG_GB_DIGITAL_GAIN CCI_REG16(0x0214)
56 #define IMX258_DGTL_GAIN_MIN 0
57 #define IMX258_DGTL_GAIN_MAX 4096 /* Max = 0xFFF */
58 #define IMX258_DGTL_GAIN_DEFAULT 1024
59 #define IMX258_DGTL_GAIN_STEP 1
60
61 /* HDR control */
62 #define IMX258_REG_HDR CCI_REG8(0x0220)
63 #define IMX258_HDR_ON BIT(0)
64 #define IMX258_REG_HDR_RATIO CCI_REG8(0x0222)
65 #define IMX258_HDR_RATIO_MIN 0
66 #define IMX258_HDR_RATIO_MAX 5
67 #define IMX258_HDR_RATIO_STEP 1
68 #define IMX258_HDR_RATIO_DEFAULT 0x0
69
70 /* Test Pattern Control */
71 #define IMX258_REG_TEST_PATTERN CCI_REG16(0x0600)
72
73 #define IMX258_CLK_BLANK_STOP CCI_REG8(0x4040)
74
75 /* Orientation */
76 #define REG_MIRROR_FLIP_CONTROL CCI_REG8(0x0101)
77 #define REG_CONFIG_MIRROR_HFLIP 0x01
78 #define REG_CONFIG_MIRROR_VFLIP 0x02
79
80 /* IMX258 native and active pixel array size. */
81 #define IMX258_NATIVE_WIDTH 4224U
82 #define IMX258_NATIVE_HEIGHT 3192U
83 #define IMX258_PIXEL_ARRAY_LEFT 8U
84 #define IMX258_PIXEL_ARRAY_TOP 16U
85 #define IMX258_PIXEL_ARRAY_WIDTH 4208U
86 #define IMX258_PIXEL_ARRAY_HEIGHT 3120U
87
88 /* regs */
89 #define IMX258_REG_PLL_MULT_DRIV CCI_REG8(0x0310)
90 #define IMX258_REG_IVTPXCK_DIV CCI_REG8(0x0301)
91 #define IMX258_REG_IVTSYCK_DIV CCI_REG8(0x0303)
92 #define IMX258_REG_PREPLLCK_VT_DIV CCI_REG8(0x0305)
93 #define IMX258_REG_IOPPXCK_DIV CCI_REG8(0x0309)
94 #define IMX258_REG_IOPSYCK_DIV CCI_REG8(0x030b)
95 #define IMX258_REG_PREPLLCK_OP_DIV CCI_REG8(0x030d)
96 #define IMX258_REG_PHASE_PIX_OUTEN CCI_REG8(0x3030)
97 #define IMX258_REG_PDPIX_DATA_RATE CCI_REG8(0x3032)
98 #define IMX258_REG_SCALE_MODE CCI_REG8(0x0401)
99 #define IMX258_REG_SCALE_MODE_EXT CCI_REG8(0x3038)
100 #define IMX258_REG_AF_WINDOW_MODE CCI_REG8(0x7bcd)
101 #define IMX258_REG_FRM_LENGTH_CTL CCI_REG8(0x0350)
102 #define IMX258_REG_CSI_LANE_MODE CCI_REG8(0x0114)
103 #define IMX258_REG_X_EVN_INC CCI_REG8(0x0381)
104 #define IMX258_REG_X_ODD_INC CCI_REG8(0x0383)
105 #define IMX258_REG_Y_EVN_INC CCI_REG8(0x0385)
106 #define IMX258_REG_Y_ODD_INC CCI_REG8(0x0387)
107 #define IMX258_REG_BINNING_MODE CCI_REG8(0x0900)
108 #define IMX258_REG_BINNING_TYPE_V CCI_REG8(0x0901)
109 #define IMX258_REG_FORCE_FD_SUM CCI_REG8(0x300d)
110 #define IMX258_REG_DIG_CROP_X_OFFSET CCI_REG16(0x0408)
111 #define IMX258_REG_DIG_CROP_Y_OFFSET CCI_REG16(0x040a)
112 #define IMX258_REG_DIG_CROP_IMAGE_WIDTH CCI_REG16(0x040c)
113 #define IMX258_REG_DIG_CROP_IMAGE_HEIGHT CCI_REG16(0x040e)
114 #define IMX258_REG_SCALE_M CCI_REG16(0x0404)
115 #define IMX258_REG_X_OUT_SIZE CCI_REG16(0x034c)
116 #define IMX258_REG_Y_OUT_SIZE CCI_REG16(0x034e)
117 #define IMX258_REG_X_ADD_STA CCI_REG16(0x0344)
118 #define IMX258_REG_Y_ADD_STA CCI_REG16(0x0346)
119 #define IMX258_REG_X_ADD_END CCI_REG16(0x0348)
120 #define IMX258_REG_Y_ADD_END CCI_REG16(0x034a)
121 #define IMX258_REG_EXCK_FREQ CCI_REG16(0x0136)
122 #define IMX258_REG_CSI_DT_FMT CCI_REG16(0x0112)
123 #define IMX258_REG_LINE_LENGTH_PCK CCI_REG16(0x0342)
124 #define IMX258_REG_SCALE_M_EXT CCI_REG16(0x303a)
125 #define IMX258_REG_FRM_LENGTH_LINES CCI_REG16(0x0340)
126 #define IMX258_REG_FINE_INTEG_TIME CCI_REG8(0x0200)
127 #define IMX258_REG_PLL_IVT_MPY CCI_REG16(0x0306)
128 #define IMX258_REG_PLL_IOP_MPY CCI_REG16(0x030e)
129 #define IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H CCI_REG16(0x0820)
130 #define IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L CCI_REG16(0x0822)
131
132 struct imx258_reg_list {
133 u32 num_of_regs;
134 const struct cci_reg_sequence *regs;
135 };
136
137 struct imx258_link_cfg {
138 unsigned int lf_to_pix_rate_factor;
139 struct imx258_reg_list reg_list;
140 };
141
142 enum {
143 IMX258_2_LANE_MODE,
144 IMX258_4_LANE_MODE,
145 IMX258_LANE_CONFIGS,
146 };
147
148 /* Link frequency config */
149 struct imx258_link_freq_config {
150 u32 pixels_per_line;
151
152 /* Configuration for this link frequency / num lanes selection */
153 struct imx258_link_cfg link_cfg[IMX258_LANE_CONFIGS];
154 };
155
156 /* Mode : resolution and related config&values */
157 struct imx258_mode {
158 /* Frame width */
159 u32 width;
160 /* Frame height */
161 u32 height;
162
163 /* V-timing */
164 u32 vts_def;
165 u32 vts_min;
166
167 /* Index of Link frequency config to be used */
168 u32 link_freq_index;
169 /* Default register values */
170 struct imx258_reg_list reg_list;
171
172 /* Analog crop rectangle */
173 struct v4l2_rect crop;
174 };
175
176 /*
177 * 4208x3120 @ 30 fps needs 1267Mbps/lane, 4 lanes.
178 * To avoid further computation of clock settings, adopt the same per
179 * lane data rate when using 2 lanes, thus allowing a maximum of 15fps.
180 */
181 static const struct cci_reg_sequence mipi_1267mbps_19_2mhz_2l[] = {
182 { IMX258_REG_EXCK_FREQ, 0x1333 },
183 { IMX258_REG_IVTPXCK_DIV, 10 },
184 { IMX258_REG_IVTSYCK_DIV, 2 },
185 { IMX258_REG_PREPLLCK_VT_DIV, 3 },
186 { IMX258_REG_PLL_IVT_MPY, 198 },
187 { IMX258_REG_IOPPXCK_DIV, 10 },
188 { IMX258_REG_IOPSYCK_DIV, 1 },
189 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
190 { IMX258_REG_PLL_IOP_MPY, 216 },
191 { IMX258_REG_PLL_MULT_DRIV, 0 },
192
193 { IMX258_REG_CSI_LANE_MODE, 1 },
194 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 1267 * 2 },
195 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
196 };
197
198 static const struct cci_reg_sequence mipi_1267mbps_19_2mhz_4l[] = {
199 { IMX258_REG_EXCK_FREQ, 0x1333 },
200 { IMX258_REG_IVTPXCK_DIV, 5 },
201 { IMX258_REG_IVTSYCK_DIV, 2 },
202 { IMX258_REG_PREPLLCK_VT_DIV, 3 },
203 { IMX258_REG_PLL_IVT_MPY, 198 },
204 { IMX258_REG_IOPPXCK_DIV, 10 },
205 { IMX258_REG_IOPSYCK_DIV, 1 },
206 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
207 { IMX258_REG_PLL_IOP_MPY, 216 },
208 { IMX258_REG_PLL_MULT_DRIV, 0 },
209
210 { IMX258_REG_CSI_LANE_MODE, 3 },
211 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 1267 * 4 },
212 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
213 };
214
215 static const struct cci_reg_sequence mipi_1272mbps_24mhz_2l[] = {
216 { IMX258_REG_EXCK_FREQ, 0x1800 },
217 { IMX258_REG_IVTPXCK_DIV, 10 },
218 { IMX258_REG_IVTSYCK_DIV, 2 },
219 { IMX258_REG_PREPLLCK_VT_DIV, 4 },
220 { IMX258_REG_PLL_IVT_MPY, 212 },
221 { IMX258_REG_IOPPXCK_DIV, 10 },
222 { IMX258_REG_IOPSYCK_DIV, 1 },
223 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
224 { IMX258_REG_PLL_IOP_MPY, 216 },
225 { IMX258_REG_PLL_MULT_DRIV, 0 },
226
227 { IMX258_REG_CSI_LANE_MODE, 1 },
228 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 1272 * 2 },
229 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
230 };
231
232 static const struct cci_reg_sequence mipi_1272mbps_24mhz_4l[] = {
233 { IMX258_REG_EXCK_FREQ, 0x1800 },
234 { IMX258_REG_IVTPXCK_DIV, 5 },
235 { IMX258_REG_IVTSYCK_DIV, 2 },
236 { IMX258_REG_PREPLLCK_VT_DIV, 4 },
237 { IMX258_REG_PLL_IVT_MPY, 212 },
238 { IMX258_REG_IOPPXCK_DIV, 10 },
239 { IMX258_REG_IOPSYCK_DIV, 1 },
240 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
241 { IMX258_REG_PLL_IOP_MPY, 216 },
242 { IMX258_REG_PLL_MULT_DRIV, 0 },
243
244 { IMX258_REG_CSI_LANE_MODE, 3 },
245 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 1272 * 4 },
246 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
247 };
248
249 static const struct cci_reg_sequence mipi_640mbps_19_2mhz_2l[] = {
250 { IMX258_REG_EXCK_FREQ, 0x1333 },
251 { IMX258_REG_IVTPXCK_DIV, 5 },
252 { IMX258_REG_IVTSYCK_DIV, 2 },
253 { IMX258_REG_PREPLLCK_VT_DIV, 3 },
254 { IMX258_REG_PLL_IVT_MPY, 100 },
255 { IMX258_REG_IOPPXCK_DIV, 10 },
256 { IMX258_REG_IOPSYCK_DIV, 1 },
257 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
258 { IMX258_REG_PLL_IOP_MPY, 216 },
259 { IMX258_REG_PLL_MULT_DRIV, 0 },
260
261 { IMX258_REG_CSI_LANE_MODE, 1 },
262 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 640 * 2 },
263 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
264 };
265
266 static const struct cci_reg_sequence mipi_640mbps_19_2mhz_4l[] = {
267 { IMX258_REG_EXCK_FREQ, 0x1333 },
268 { IMX258_REG_IVTPXCK_DIV, 5 },
269 { IMX258_REG_IVTSYCK_DIV, 2 },
270 { IMX258_REG_PREPLLCK_VT_DIV, 3 },
271 { IMX258_REG_PLL_IVT_MPY, 100 },
272 { IMX258_REG_IOPPXCK_DIV, 10 },
273 { IMX258_REG_IOPSYCK_DIV, 1 },
274 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
275 { IMX258_REG_PLL_IOP_MPY, 216 },
276 { IMX258_REG_PLL_MULT_DRIV, 0 },
277
278 { IMX258_REG_CSI_LANE_MODE, 3 },
279 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 640 * 4 },
280 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
281 };
282
283 static const struct cci_reg_sequence mipi_642mbps_24mhz_2l[] = {
284 { IMX258_REG_EXCK_FREQ, 0x1800 },
285 { IMX258_REG_IVTPXCK_DIV, 5 },
286 { IMX258_REG_IVTSYCK_DIV, 2 },
287 { IMX258_REG_PREPLLCK_VT_DIV, 4 },
288 { IMX258_REG_PLL_IVT_MPY, 107 },
289 { IMX258_REG_IOPPXCK_DIV, 10 },
290 { IMX258_REG_IOPSYCK_DIV, 1 },
291 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
292 { IMX258_REG_PLL_IOP_MPY, 216 },
293 { IMX258_REG_PLL_MULT_DRIV, 0 },
294
295 { IMX258_REG_CSI_LANE_MODE, 1 },
296 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 642 * 2 },
297 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
298 };
299
300 static const struct cci_reg_sequence mipi_642mbps_24mhz_4l[] = {
301 { IMX258_REG_EXCK_FREQ, 0x1800 },
302 { IMX258_REG_IVTPXCK_DIV, 5 },
303 { IMX258_REG_IVTSYCK_DIV, 2 },
304 { IMX258_REG_PREPLLCK_VT_DIV, 4 },
305 { IMX258_REG_PLL_IVT_MPY, 107 },
306 { IMX258_REG_IOPPXCK_DIV, 10 },
307 { IMX258_REG_IOPSYCK_DIV, 1 },
308 { IMX258_REG_PREPLLCK_OP_DIV, 2 },
309 { IMX258_REG_PLL_IOP_MPY, 216 },
310 { IMX258_REG_PLL_MULT_DRIV, 0 },
311
312 { IMX258_REG_CSI_LANE_MODE, 3 },
313 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_H, 642 * 4 },
314 { IMX258_REG_REQ_LINK_BIT_RATE_MBPS_L, 0 },
315 };
316
317 static const struct cci_reg_sequence mode_common_regs[] = {
318 { CCI_REG8(0x3051), 0x00 },
319 { CCI_REG8(0x6B11), 0xCF },
320 { CCI_REG8(0x7FF0), 0x08 },
321 { CCI_REG8(0x7FF1), 0x0F },
322 { CCI_REG8(0x7FF2), 0x08 },
323 { CCI_REG8(0x7FF3), 0x1B },
324 { CCI_REG8(0x7FF4), 0x23 },
325 { CCI_REG8(0x7FF5), 0x60 },
326 { CCI_REG8(0x7FF6), 0x00 },
327 { CCI_REG8(0x7FF7), 0x01 },
328 { CCI_REG8(0x7FF8), 0x00 },
329 { CCI_REG8(0x7FF9), 0x78 },
330 { CCI_REG8(0x7FFA), 0x00 },
331 { CCI_REG8(0x7FFB), 0x00 },
332 { CCI_REG8(0x7FFC), 0x00 },
333 { CCI_REG8(0x7FFD), 0x00 },
334 { CCI_REG8(0x7FFE), 0x00 },
335 { CCI_REG8(0x7FFF), 0x03 },
336 { CCI_REG8(0x7F76), 0x03 },
337 { CCI_REG8(0x7F77), 0xFE },
338 { CCI_REG8(0x7FA8), 0x03 },
339 { CCI_REG8(0x7FA9), 0xFE },
340 { CCI_REG8(0x7B24), 0x81 },
341 { CCI_REG8(0x6564), 0x07 },
342 { CCI_REG8(0x6B0D), 0x41 },
343 { CCI_REG8(0x653D), 0x04 },
344 { CCI_REG8(0x6B05), 0x8C },
345 { CCI_REG8(0x6B06), 0xF9 },
346 { CCI_REG8(0x6B08), 0x65 },
347 { CCI_REG8(0x6B09), 0xFC },
348 { CCI_REG8(0x6B0A), 0xCF },
349 { CCI_REG8(0x6B0B), 0xD2 },
350 { CCI_REG8(0x6700), 0x0E },
351 { CCI_REG8(0x6707), 0x0E },
352 { CCI_REG8(0x9104), 0x00 },
353 { CCI_REG8(0x4648), 0x7F },
354 { CCI_REG8(0x7420), 0x00 },
355 { CCI_REG8(0x7421), 0x1C },
356 { CCI_REG8(0x7422), 0x00 },
357 { CCI_REG8(0x7423), 0xD7 },
358 { CCI_REG8(0x5F04), 0x00 },
359 { CCI_REG8(0x5F05), 0xED },
360 {IMX258_REG_CSI_DT_FMT, 0x0a0a},
361 {IMX258_REG_LINE_LENGTH_PCK, 5352},
362 {IMX258_REG_X_ADD_STA, 0},
363 {IMX258_REG_Y_ADD_STA, 0},
364 {IMX258_REG_X_ADD_END, 4207},
365 {IMX258_REG_Y_ADD_END, 3119},
366 {IMX258_REG_X_EVN_INC, 1},
367 {IMX258_REG_X_ODD_INC, 1},
368 {IMX258_REG_Y_EVN_INC, 1},
369 {IMX258_REG_Y_ODD_INC, 1},
370 {IMX258_REG_DIG_CROP_X_OFFSET, 0},
371 {IMX258_REG_DIG_CROP_Y_OFFSET, 0},
372 {IMX258_REG_DIG_CROP_IMAGE_WIDTH, 4208},
373 {IMX258_REG_SCALE_MODE_EXT, 0},
374 {IMX258_REG_SCALE_M_EXT, 16},
375 {IMX258_REG_FORCE_FD_SUM, 0},
376 {IMX258_REG_FRM_LENGTH_CTL, 0},
377 {IMX258_REG_ANALOG_GAIN, 0},
378 {IMX258_REG_GR_DIGITAL_GAIN, 256},
379 {IMX258_REG_R_DIGITAL_GAIN, 256},
380 {IMX258_REG_B_DIGITAL_GAIN, 256},
381 {IMX258_REG_GB_DIGITAL_GAIN, 256},
382 {IMX258_REG_AF_WINDOW_MODE, 0},
383 { CCI_REG8(0x94DC), 0x20 },
384 { CCI_REG8(0x94DD), 0x20 },
385 { CCI_REG8(0x94DE), 0x20 },
386 { CCI_REG8(0x95DC), 0x20 },
387 { CCI_REG8(0x95DD), 0x20 },
388 { CCI_REG8(0x95DE), 0x20 },
389 { CCI_REG8(0x7FB0), 0x00 },
390 { CCI_REG8(0x9010), 0x3E },
391 { CCI_REG8(0x9419), 0x50 },
392 { CCI_REG8(0x941B), 0x50 },
393 { CCI_REG8(0x9519), 0x50 },
394 { CCI_REG8(0x951B), 0x50 },
395 {IMX258_REG_PHASE_PIX_OUTEN, 0},
396 {IMX258_REG_PDPIX_DATA_RATE, 0},
397 {IMX258_REG_HDR, 0},
398 };
399
400 static const struct cci_reg_sequence mode_4208x3120_regs[] = {
401 {IMX258_REG_BINNING_MODE, 0},
402 {IMX258_REG_BINNING_TYPE_V, 0x11},
403 {IMX258_REG_SCALE_MODE, 0},
404 {IMX258_REG_SCALE_M, 16},
405 {IMX258_REG_DIG_CROP_IMAGE_HEIGHT, 3120},
406 {IMX258_REG_X_OUT_SIZE, 4208},
407 {IMX258_REG_Y_OUT_SIZE, 3120},
408 };
409
410 static const struct cci_reg_sequence mode_2104_1560_regs[] = {
411 {IMX258_REG_BINNING_MODE, 1},
412 {IMX258_REG_BINNING_TYPE_V, 0x12},
413 {IMX258_REG_SCALE_MODE, 1},
414 {IMX258_REG_SCALE_M, 32},
415 {IMX258_REG_DIG_CROP_IMAGE_HEIGHT, 1560},
416 {IMX258_REG_X_OUT_SIZE, 2104},
417 {IMX258_REG_Y_OUT_SIZE, 1560},
418 };
419
420 static const struct cci_reg_sequence mode_1048_780_regs[] = {
421 {IMX258_REG_BINNING_MODE, 1},
422 {IMX258_REG_BINNING_TYPE_V, 0x14},
423 {IMX258_REG_SCALE_MODE, 1},
424 {IMX258_REG_SCALE_M, 64},
425 {IMX258_REG_DIG_CROP_IMAGE_HEIGHT, 780},
426 {IMX258_REG_X_OUT_SIZE, 1048},
427 {IMX258_REG_Y_OUT_SIZE, 780},
428 };
429
430 struct imx258_variant_cfg {
431 const struct cci_reg_sequence *regs;
432 unsigned int num_regs;
433 };
434
435 static const struct cci_reg_sequence imx258_cfg_regs[] = {
436 { CCI_REG8(0x3052), 0x00 },
437 { CCI_REG8(0x4E21), 0x14 },
438 { CCI_REG8(0x7B25), 0x00 },
439 };
440
441 static const struct imx258_variant_cfg imx258_cfg = {
442 .regs = imx258_cfg_regs,
443 .num_regs = ARRAY_SIZE(imx258_cfg_regs),
444 };
445
446 static const struct cci_reg_sequence imx258_pdaf_cfg_regs[] = {
447 { CCI_REG8(0x3052), 0x01 },
448 { CCI_REG8(0x4E21), 0x10 },
449 { CCI_REG8(0x7B25), 0x01 },
450 };
451
452 static const struct imx258_variant_cfg imx258_pdaf_cfg = {
453 .regs = imx258_pdaf_cfg_regs,
454 .num_regs = ARRAY_SIZE(imx258_pdaf_cfg_regs),
455 };
456
457 /*
458 * The supported formats.
459 * This table MUST contain 4 entries per format, to cover the various flip
460 * combinations in the order
461 * - no flip
462 * - h flip
463 * - v flip
464 * - h&v flips
465 */
466 static const u32 codes[] = {
467 /* 10-bit modes. */
468 MEDIA_BUS_FMT_SRGGB10_1X10,
469 MEDIA_BUS_FMT_SGRBG10_1X10,
470 MEDIA_BUS_FMT_SGBRG10_1X10,
471 MEDIA_BUS_FMT_SBGGR10_1X10
472 };
473
474 static const char * const imx258_test_pattern_menu[] = {
475 "Disabled",
476 "Solid Colour",
477 "Eight Vertical Colour Bars",
478 "Colour Bars With Fade to Grey",
479 "Pseudorandom Sequence (PN9)",
480 };
481
482 /* regulator supplies */
483 static const char * const imx258_supply_name[] = {
484 /* Supplies can be enabled in any order */
485 "vana", /* Analog (2.8V) supply */
486 "vdig", /* Digital Core (1.2V) supply */
487 "vif", /* IF (1.8V) supply */
488 };
489
490 #define IMX258_NUM_SUPPLIES ARRAY_SIZE(imx258_supply_name)
491
492 enum {
493 IMX258_LINK_FREQ_1267MBPS,
494 IMX258_LINK_FREQ_640MBPS,
495 };
496
497 /*
498 * Pixel rate does not necessarily relate to link frequency on this sensor as
499 * there is a FIFO between the pixel array pipeline and the MIPI serializer.
500 * The recommendation from Sony is that the pixel array is always run with a
501 * line length of 5352 pixels, which means that there is a large amount of
502 * blanking time for the 1048x780 mode. There is no need to replicate this
503 * blanking on the CSI2 bus, and the configuration of register 0x0301 allows the
504 * divider to be altered.
505 *
506 * The actual factor between link frequency and pixel rate is in the
507 * imx258_link_cfg, so use this to convert between the two.
508 * bits per pixel being 10, and D-PHY being DDR is assumed by this function, so
509 * the value is only the combination of number of lanes and pixel clock divider.
510 */
link_freq_to_pixel_rate(u64 f,const struct imx258_link_cfg * link_cfg)511 static u64 link_freq_to_pixel_rate(u64 f, const struct imx258_link_cfg *link_cfg)
512 {
513 f *= 2 * link_cfg->lf_to_pix_rate_factor;
514 do_div(f, 10);
515
516 return f;
517 }
518
519 /* Menu items for LINK_FREQ V4L2 control */
520 /* Configurations for supported link frequencies */
521 static const s64 link_freq_menu_items_19_2[] = {
522 633600000ULL,
523 320000000ULL,
524 };
525
526 static const s64 link_freq_menu_items_24[] = {
527 636000000ULL,
528 321000000ULL,
529 };
530
531 #define REGS(_list) { .num_of_regs = ARRAY_SIZE(_list), .regs = _list, }
532
533 /* Link frequency configs */
534 static const struct imx258_link_freq_config link_freq_configs_19_2[] = {
535 [IMX258_LINK_FREQ_1267MBPS] = {
536 .pixels_per_line = IMX258_PPL_DEFAULT,
537 .link_cfg = {
538 [IMX258_2_LANE_MODE] = {
539 .lf_to_pix_rate_factor = 2 * 2,
540 .reg_list = REGS(mipi_1267mbps_19_2mhz_2l),
541 },
542 [IMX258_4_LANE_MODE] = {
543 .lf_to_pix_rate_factor = 4,
544 .reg_list = REGS(mipi_1267mbps_19_2mhz_4l),
545 },
546 }
547 },
548 [IMX258_LINK_FREQ_640MBPS] = {
549 .pixels_per_line = IMX258_PPL_DEFAULT,
550 .link_cfg = {
551 [IMX258_2_LANE_MODE] = {
552 .lf_to_pix_rate_factor = 2,
553 .reg_list = REGS(mipi_640mbps_19_2mhz_2l),
554 },
555 [IMX258_4_LANE_MODE] = {
556 .lf_to_pix_rate_factor = 4,
557 .reg_list = REGS(mipi_640mbps_19_2mhz_4l),
558 },
559 }
560 },
561 };
562
563 static const struct imx258_link_freq_config link_freq_configs_24[] = {
564 [IMX258_LINK_FREQ_1267MBPS] = {
565 .pixels_per_line = IMX258_PPL_DEFAULT,
566 .link_cfg = {
567 [IMX258_2_LANE_MODE] = {
568 .lf_to_pix_rate_factor = 2,
569 .reg_list = REGS(mipi_1272mbps_24mhz_2l),
570 },
571 [IMX258_4_LANE_MODE] = {
572 .lf_to_pix_rate_factor = 4,
573 .reg_list = REGS(mipi_1272mbps_24mhz_4l),
574 },
575 }
576 },
577 [IMX258_LINK_FREQ_640MBPS] = {
578 .pixels_per_line = IMX258_PPL_DEFAULT,
579 .link_cfg = {
580 [IMX258_2_LANE_MODE] = {
581 .lf_to_pix_rate_factor = 2 * 2,
582 .reg_list = REGS(mipi_642mbps_24mhz_2l),
583 },
584 [IMX258_4_LANE_MODE] = {
585 .lf_to_pix_rate_factor = 4,
586 .reg_list = REGS(mipi_642mbps_24mhz_4l),
587 },
588 }
589 },
590 };
591
592 /* Mode configs */
593 static const struct imx258_mode supported_modes[] = {
594 {
595 .width = 4208,
596 .height = 3120,
597 .vts_def = IMX258_VTS_30FPS,
598 .vts_min = IMX258_VTS_30FPS,
599 .reg_list = {
600 .num_of_regs = ARRAY_SIZE(mode_4208x3120_regs),
601 .regs = mode_4208x3120_regs,
602 },
603 .link_freq_index = IMX258_LINK_FREQ_1267MBPS,
604 .crop = {
605 .left = IMX258_PIXEL_ARRAY_LEFT,
606 .top = IMX258_PIXEL_ARRAY_TOP,
607 .width = 4208,
608 .height = 3120,
609 },
610 },
611 {
612 .width = 2104,
613 .height = 1560,
614 .vts_def = IMX258_VTS_30FPS_2K,
615 .vts_min = IMX258_VTS_30FPS_2K,
616 .reg_list = {
617 .num_of_regs = ARRAY_SIZE(mode_2104_1560_regs),
618 .regs = mode_2104_1560_regs,
619 },
620 .link_freq_index = IMX258_LINK_FREQ_640MBPS,
621 .crop = {
622 .left = IMX258_PIXEL_ARRAY_LEFT,
623 .top = IMX258_PIXEL_ARRAY_TOP,
624 .width = 4208,
625 .height = 3120,
626 },
627 },
628 {
629 .width = 1048,
630 .height = 780,
631 .vts_def = IMX258_VTS_30FPS_VGA,
632 .vts_min = IMX258_VTS_30FPS_VGA,
633 .reg_list = {
634 .num_of_regs = ARRAY_SIZE(mode_1048_780_regs),
635 .regs = mode_1048_780_regs,
636 },
637 .link_freq_index = IMX258_LINK_FREQ_640MBPS,
638 .crop = {
639 .left = IMX258_PIXEL_ARRAY_LEFT,
640 .top = IMX258_PIXEL_ARRAY_TOP,
641 .width = 4208,
642 .height = 3120,
643 },
644 },
645 };
646
647 struct imx258 {
648 struct v4l2_subdev sd;
649 struct media_pad pad;
650 struct regmap *regmap;
651
652 const struct imx258_variant_cfg *variant_cfg;
653
654 struct v4l2_ctrl_handler ctrl_handler;
655 /* V4L2 Controls */
656 struct v4l2_ctrl *link_freq;
657 struct v4l2_ctrl *pixel_rate;
658 struct v4l2_ctrl *vblank;
659 struct v4l2_ctrl *hblank;
660 struct v4l2_ctrl *exposure;
661 struct v4l2_ctrl *hflip;
662 struct v4l2_ctrl *vflip;
663
664 /* Current mode */
665 const struct imx258_mode *cur_mode;
666
667 unsigned long link_freq_bitmap;
668 const struct imx258_link_freq_config *link_freq_configs;
669 const s64 *link_freq_menu_items;
670 unsigned int lane_mode_idx;
671 unsigned int csi2_flags;
672
673 /*
674 * Mutex for serialized access:
675 * Protect sensor module set pad format and start/stop streaming safely.
676 */
677 struct mutex mutex;
678
679 struct clk *clk;
680 struct regulator_bulk_data supplies[IMX258_NUM_SUPPLIES];
681 };
682
to_imx258(struct v4l2_subdev * _sd)683 static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd)
684 {
685 return container_of(_sd, struct imx258, sd);
686 }
687
688 /* Get bayer order based on flip setting. */
imx258_get_format_code(const struct imx258 * imx258)689 static u32 imx258_get_format_code(const struct imx258 *imx258)
690 {
691 unsigned int i;
692
693 lockdep_assert_held(&imx258->mutex);
694
695 i = (imx258->vflip->val ? 2 : 0) |
696 (imx258->hflip->val ? 1 : 0);
697
698 return codes[i];
699 }
700
701 /* Open sub-device */
imx258_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)702 static int imx258_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
703 {
704 struct imx258 *imx258 = to_imx258(sd);
705 struct v4l2_mbus_framefmt *try_fmt =
706 v4l2_subdev_state_get_format(fh->state, 0);
707 struct v4l2_rect *try_crop;
708
709 /* Initialize try_fmt */
710 try_fmt->width = supported_modes[0].width;
711 try_fmt->height = supported_modes[0].height;
712 try_fmt->code = imx258_get_format_code(imx258);
713 try_fmt->field = V4L2_FIELD_NONE;
714
715 /* Initialize try_crop */
716 try_crop = v4l2_subdev_state_get_crop(fh->state, 0);
717 try_crop->left = IMX258_PIXEL_ARRAY_LEFT;
718 try_crop->top = IMX258_PIXEL_ARRAY_TOP;
719 try_crop->width = IMX258_PIXEL_ARRAY_WIDTH;
720 try_crop->height = IMX258_PIXEL_ARRAY_HEIGHT;
721
722 return 0;
723 }
724
imx258_update_digital_gain(struct imx258 * imx258,u32 val)725 static int imx258_update_digital_gain(struct imx258 *imx258, u32 val)
726 {
727 int ret = 0;
728
729 cci_write(imx258->regmap, IMX258_REG_GR_DIGITAL_GAIN, val, &ret);
730 cci_write(imx258->regmap, IMX258_REG_GB_DIGITAL_GAIN, val, &ret);
731 cci_write(imx258->regmap, IMX258_REG_R_DIGITAL_GAIN, val, &ret);
732 cci_write(imx258->regmap, IMX258_REG_B_DIGITAL_GAIN, val, &ret);
733
734 return ret;
735 }
736
imx258_adjust_exposure_range(struct imx258 * imx258)737 static void imx258_adjust_exposure_range(struct imx258 *imx258)
738 {
739 int exposure_max, exposure_def;
740
741 /* Honour the VBLANK limits when setting exposure. */
742 exposure_max = imx258->cur_mode->height + imx258->vblank->val -
743 IMX258_EXPOSURE_OFFSET;
744 exposure_def = min(exposure_max, imx258->exposure->val);
745 __v4l2_ctrl_modify_range(imx258->exposure, imx258->exposure->minimum,
746 exposure_max, imx258->exposure->step,
747 exposure_def);
748 }
749
imx258_set_ctrl(struct v4l2_ctrl * ctrl)750 static int imx258_set_ctrl(struct v4l2_ctrl *ctrl)
751 {
752 struct imx258 *imx258 =
753 container_of(ctrl->handler, struct imx258, ctrl_handler);
754 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
755 int ret = 0;
756
757 /*
758 * The VBLANK control may change the limits of usable exposure, so check
759 * and adjust if necessary.
760 */
761 if (ctrl->id == V4L2_CID_VBLANK)
762 imx258_adjust_exposure_range(imx258);
763
764 /*
765 * Applying V4L2 control value only happens
766 * when power is up for streaming
767 */
768 if (pm_runtime_get_if_in_use(&client->dev) == 0)
769 return 0;
770
771 switch (ctrl->id) {
772 case V4L2_CID_ANALOGUE_GAIN:
773 ret = cci_write(imx258->regmap, IMX258_REG_ANALOG_GAIN,
774 ctrl->val, NULL);
775 break;
776 case V4L2_CID_EXPOSURE:
777 ret = cci_write(imx258->regmap, IMX258_REG_EXPOSURE,
778 ctrl->val, NULL);
779 break;
780 case V4L2_CID_DIGITAL_GAIN:
781 ret = imx258_update_digital_gain(imx258, ctrl->val);
782 break;
783 case V4L2_CID_TEST_PATTERN:
784 ret = cci_write(imx258->regmap, IMX258_REG_TEST_PATTERN,
785 ctrl->val, NULL);
786 break;
787 case V4L2_CID_WIDE_DYNAMIC_RANGE:
788 if (!ctrl->val) {
789 ret = cci_write(imx258->regmap, IMX258_REG_HDR,
790 IMX258_HDR_RATIO_MIN, NULL);
791 } else {
792 ret = cci_write(imx258->regmap, IMX258_REG_HDR,
793 IMX258_HDR_ON, NULL);
794 if (ret)
795 break;
796 ret = cci_write(imx258->regmap, IMX258_REG_HDR_RATIO,
797 BIT(IMX258_HDR_RATIO_MAX), NULL);
798 }
799 break;
800 case V4L2_CID_VBLANK:
801 ret = cci_write(imx258->regmap, IMX258_REG_FRM_LENGTH_LINES,
802 imx258->cur_mode->height + ctrl->val, NULL);
803 break;
804 case V4L2_CID_VFLIP:
805 case V4L2_CID_HFLIP:
806 ret = cci_write(imx258->regmap, REG_MIRROR_FLIP_CONTROL,
807 (imx258->hflip->val ?
808 REG_CONFIG_MIRROR_HFLIP : 0) |
809 (imx258->vflip->val ?
810 REG_CONFIG_MIRROR_VFLIP : 0),
811 NULL);
812 break;
813 default:
814 dev_info(&client->dev,
815 "ctrl(id:0x%x,val:0x%x) is not handled\n",
816 ctrl->id, ctrl->val);
817 ret = -EINVAL;
818 break;
819 }
820
821 pm_runtime_put(&client->dev);
822
823 return ret;
824 }
825
826 static const struct v4l2_ctrl_ops imx258_ctrl_ops = {
827 .s_ctrl = imx258_set_ctrl,
828 };
829
imx258_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)830 static int imx258_enum_mbus_code(struct v4l2_subdev *sd,
831 struct v4l2_subdev_state *sd_state,
832 struct v4l2_subdev_mbus_code_enum *code)
833 {
834 struct imx258 *imx258 = to_imx258(sd);
835
836 /* Only one bayer format (10 bit) is supported */
837 if (code->index > 0)
838 return -EINVAL;
839
840 code->code = imx258_get_format_code(imx258);
841
842 return 0;
843 }
844
imx258_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)845 static int imx258_enum_frame_size(struct v4l2_subdev *sd,
846 struct v4l2_subdev_state *sd_state,
847 struct v4l2_subdev_frame_size_enum *fse)
848 {
849 struct imx258 *imx258 = to_imx258(sd);
850 if (fse->index >= ARRAY_SIZE(supported_modes))
851 return -EINVAL;
852
853 if (fse->code != imx258_get_format_code(imx258))
854 return -EINVAL;
855
856 fse->min_width = supported_modes[fse->index].width;
857 fse->max_width = fse->min_width;
858 fse->min_height = supported_modes[fse->index].height;
859 fse->max_height = fse->min_height;
860
861 return 0;
862 }
863
imx258_update_pad_format(struct imx258 * imx258,const struct imx258_mode * mode,struct v4l2_subdev_format * fmt)864 static void imx258_update_pad_format(struct imx258 *imx258,
865 const struct imx258_mode *mode,
866 struct v4l2_subdev_format *fmt)
867 {
868 fmt->format.width = mode->width;
869 fmt->format.height = mode->height;
870 fmt->format.code = imx258_get_format_code(imx258);
871 fmt->format.field = V4L2_FIELD_NONE;
872 }
873
__imx258_get_pad_format(struct imx258 * imx258,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)874 static int __imx258_get_pad_format(struct imx258 *imx258,
875 struct v4l2_subdev_state *sd_state,
876 struct v4l2_subdev_format *fmt)
877 {
878 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
879 fmt->format = *v4l2_subdev_state_get_format(sd_state,
880 fmt->pad);
881 else
882 imx258_update_pad_format(imx258, imx258->cur_mode, fmt);
883
884 return 0;
885 }
886
imx258_get_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)887 static int imx258_get_pad_format(struct v4l2_subdev *sd,
888 struct v4l2_subdev_state *sd_state,
889 struct v4l2_subdev_format *fmt)
890 {
891 struct imx258 *imx258 = to_imx258(sd);
892 int ret;
893
894 mutex_lock(&imx258->mutex);
895 ret = __imx258_get_pad_format(imx258, sd_state, fmt);
896 mutex_unlock(&imx258->mutex);
897
898 return ret;
899 }
900
imx258_set_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)901 static int imx258_set_pad_format(struct v4l2_subdev *sd,
902 struct v4l2_subdev_state *sd_state,
903 struct v4l2_subdev_format *fmt)
904 {
905 struct imx258 *imx258 = to_imx258(sd);
906 const struct imx258_link_freq_config *link_freq_cfgs;
907 const struct imx258_link_cfg *link_cfg;
908 struct v4l2_mbus_framefmt *framefmt;
909 const struct imx258_mode *mode;
910 s32 vblank_def;
911 s32 vblank_min;
912 s64 h_blank;
913 s64 pixel_rate;
914 s64 link_freq;
915
916 mutex_lock(&imx258->mutex);
917
918 fmt->format.code = imx258_get_format_code(imx258);
919
920 mode = v4l2_find_nearest_size(supported_modes,
921 ARRAY_SIZE(supported_modes), width, height,
922 fmt->format.width, fmt->format.height);
923 imx258_update_pad_format(imx258, mode, fmt);
924 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
925 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
926 *framefmt = fmt->format;
927 } else {
928 imx258->cur_mode = mode;
929 __v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
930
931 link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
932 link_freq_cfgs =
933 &imx258->link_freq_configs[mode->link_freq_index];
934
935 link_cfg = &link_freq_cfgs->link_cfg[imx258->lane_mode_idx];
936 pixel_rate = link_freq_to_pixel_rate(link_freq, link_cfg);
937 __v4l2_ctrl_modify_range(imx258->pixel_rate, pixel_rate,
938 pixel_rate, 1, pixel_rate);
939 /* Update limits and set FPS to default */
940 vblank_def = imx258->cur_mode->vts_def -
941 imx258->cur_mode->height;
942 vblank_min = imx258->cur_mode->vts_min -
943 imx258->cur_mode->height;
944 __v4l2_ctrl_modify_range(
945 imx258->vblank, vblank_min,
946 IMX258_VTS_MAX - imx258->cur_mode->height, 1,
947 vblank_def);
948 __v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
949 h_blank =
950 imx258->link_freq_configs[mode->link_freq_index].pixels_per_line
951 - imx258->cur_mode->width;
952 __v4l2_ctrl_modify_range(imx258->hblank, h_blank,
953 h_blank, 1, h_blank);
954 }
955
956 mutex_unlock(&imx258->mutex);
957
958 return 0;
959 }
960
961 static const struct v4l2_rect *
__imx258_get_pad_crop(struct imx258 * imx258,struct v4l2_subdev_state * sd_state,unsigned int pad,enum v4l2_subdev_format_whence which)962 __imx258_get_pad_crop(struct imx258 *imx258,
963 struct v4l2_subdev_state *sd_state,
964 unsigned int pad, enum v4l2_subdev_format_whence which)
965 {
966 switch (which) {
967 case V4L2_SUBDEV_FORMAT_TRY:
968 return v4l2_subdev_state_get_crop(sd_state, pad);
969 case V4L2_SUBDEV_FORMAT_ACTIVE:
970 return &imx258->cur_mode->crop;
971 }
972
973 return NULL;
974 }
975
imx258_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)976 static int imx258_get_selection(struct v4l2_subdev *sd,
977 struct v4l2_subdev_state *sd_state,
978 struct v4l2_subdev_selection *sel)
979 {
980 switch (sel->target) {
981 case V4L2_SEL_TGT_CROP: {
982 struct imx258 *imx258 = to_imx258(sd);
983
984 mutex_lock(&imx258->mutex);
985 sel->r = *__imx258_get_pad_crop(imx258, sd_state, sel->pad,
986 sel->which);
987 mutex_unlock(&imx258->mutex);
988
989 return 0;
990 }
991
992 case V4L2_SEL_TGT_NATIVE_SIZE:
993 sel->r.left = 0;
994 sel->r.top = 0;
995 sel->r.width = IMX258_NATIVE_WIDTH;
996 sel->r.height = IMX258_NATIVE_HEIGHT;
997
998 return 0;
999
1000 case V4L2_SEL_TGT_CROP_DEFAULT:
1001 case V4L2_SEL_TGT_CROP_BOUNDS:
1002 sel->r.left = IMX258_PIXEL_ARRAY_LEFT;
1003 sel->r.top = IMX258_PIXEL_ARRAY_TOP;
1004 sel->r.width = IMX258_PIXEL_ARRAY_WIDTH;
1005 sel->r.height = IMX258_PIXEL_ARRAY_HEIGHT;
1006
1007 return 0;
1008 }
1009
1010 return -EINVAL;
1011 }
1012
1013 /* Start streaming */
imx258_start_streaming(struct imx258 * imx258)1014 static int imx258_start_streaming(struct imx258 *imx258)
1015 {
1016 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
1017 const struct imx258_reg_list *reg_list;
1018 const struct imx258_link_freq_config *link_freq_cfg;
1019 int ret, link_freq_index;
1020
1021 ret = cci_write(imx258->regmap, IMX258_REG_RESET, 0x01, NULL);
1022 if (ret) {
1023 dev_err(&client->dev, "%s failed to reset sensor\n", __func__);
1024 return ret;
1025 }
1026
1027 /* 12ms is required from poweron to standby */
1028 fsleep(12000);
1029
1030 /* Setup PLL */
1031 link_freq_index = imx258->cur_mode->link_freq_index;
1032 link_freq_cfg = &imx258->link_freq_configs[link_freq_index];
1033
1034 reg_list = &link_freq_cfg->link_cfg[imx258->lane_mode_idx].reg_list;
1035 ret = cci_multi_reg_write(imx258->regmap, reg_list->regs, reg_list->num_of_regs, NULL);
1036 if (ret) {
1037 dev_err(&client->dev, "%s failed to set plls\n", __func__);
1038 return ret;
1039 }
1040
1041 ret = cci_multi_reg_write(imx258->regmap, mode_common_regs,
1042 ARRAY_SIZE(mode_common_regs), NULL);
1043 if (ret) {
1044 dev_err(&client->dev, "%s failed to set common regs\n", __func__);
1045 return ret;
1046 }
1047
1048 ret = cci_multi_reg_write(imx258->regmap, imx258->variant_cfg->regs,
1049 imx258->variant_cfg->num_regs, NULL);
1050 if (ret) {
1051 dev_err(&client->dev, "%s failed to set variant config\n",
1052 __func__);
1053 return ret;
1054 }
1055
1056 ret = cci_write(imx258->regmap, IMX258_CLK_BLANK_STOP,
1057 !!(imx258->csi2_flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK),
1058 NULL);
1059 if (ret) {
1060 dev_err(&client->dev, "%s failed to set clock lane mode\n", __func__);
1061 return ret;
1062 }
1063
1064 /* Apply default values of current mode */
1065 reg_list = &imx258->cur_mode->reg_list;
1066 ret = cci_multi_reg_write(imx258->regmap, reg_list->regs, reg_list->num_of_regs, NULL);
1067 if (ret) {
1068 dev_err(&client->dev, "%s failed to set mode\n", __func__);
1069 return ret;
1070 }
1071
1072 /* Apply customized values from user */
1073 ret = __v4l2_ctrl_handler_setup(imx258->sd.ctrl_handler);
1074 if (ret)
1075 return ret;
1076
1077 /* set stream on register */
1078 return cci_write(imx258->regmap, IMX258_REG_MODE_SELECT,
1079 IMX258_MODE_STREAMING, NULL);
1080 }
1081
1082 /* Stop streaming */
imx258_stop_streaming(struct imx258 * imx258)1083 static int imx258_stop_streaming(struct imx258 *imx258)
1084 {
1085 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
1086 int ret;
1087
1088 /* set stream off register */
1089 ret = cci_write(imx258->regmap, IMX258_REG_MODE_SELECT,
1090 IMX258_MODE_STANDBY, NULL);
1091 if (ret)
1092 dev_err(&client->dev, "%s failed to set stream\n", __func__);
1093
1094 /*
1095 * Return success even if it was an error, as there is nothing the
1096 * caller can do about it.
1097 */
1098 return 0;
1099 }
1100
imx258_power_on(struct device * dev)1101 static int imx258_power_on(struct device *dev)
1102 {
1103 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1104 struct imx258 *imx258 = to_imx258(sd);
1105 int ret;
1106
1107 ret = regulator_bulk_enable(IMX258_NUM_SUPPLIES,
1108 imx258->supplies);
1109 if (ret) {
1110 dev_err(dev, "%s: failed to enable regulators\n",
1111 __func__);
1112 return ret;
1113 }
1114
1115 ret = clk_prepare_enable(imx258->clk);
1116 if (ret) {
1117 dev_err(dev, "failed to enable clock\n");
1118 regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
1119 }
1120
1121 return ret;
1122 }
1123
imx258_power_off(struct device * dev)1124 static int imx258_power_off(struct device *dev)
1125 {
1126 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1127 struct imx258 *imx258 = to_imx258(sd);
1128
1129 clk_disable_unprepare(imx258->clk);
1130 regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
1131
1132 return 0;
1133 }
1134
imx258_set_stream(struct v4l2_subdev * sd,int enable)1135 static int imx258_set_stream(struct v4l2_subdev *sd, int enable)
1136 {
1137 struct imx258 *imx258 = to_imx258(sd);
1138 struct i2c_client *client = v4l2_get_subdevdata(sd);
1139 int ret = 0;
1140
1141 mutex_lock(&imx258->mutex);
1142
1143 if (enable) {
1144 ret = pm_runtime_resume_and_get(&client->dev);
1145 if (ret < 0)
1146 goto err_unlock;
1147
1148 /*
1149 * Apply default & customized values
1150 * and then start streaming.
1151 */
1152 ret = imx258_start_streaming(imx258);
1153 if (ret)
1154 goto err_rpm_put;
1155 } else {
1156 imx258_stop_streaming(imx258);
1157 pm_runtime_put(&client->dev);
1158 }
1159
1160 mutex_unlock(&imx258->mutex);
1161
1162 return ret;
1163
1164 err_rpm_put:
1165 pm_runtime_put(&client->dev);
1166 err_unlock:
1167 mutex_unlock(&imx258->mutex);
1168
1169 return ret;
1170 }
1171
1172 /* Verify chip ID */
imx258_identify_module(struct imx258 * imx258)1173 static int imx258_identify_module(struct imx258 *imx258)
1174 {
1175 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
1176 int ret;
1177 u64 val;
1178
1179 ret = cci_read(imx258->regmap, IMX258_REG_CHIP_ID,
1180 &val, NULL);
1181 if (ret) {
1182 dev_err(&client->dev, "failed to read chip id %x\n",
1183 IMX258_CHIP_ID);
1184 return ret;
1185 }
1186
1187 if (val != IMX258_CHIP_ID) {
1188 dev_err(&client->dev, "chip id mismatch: %x!=%llx\n",
1189 IMX258_CHIP_ID, val);
1190 return -EIO;
1191 }
1192
1193 return 0;
1194 }
1195
1196 static const struct v4l2_subdev_video_ops imx258_video_ops = {
1197 .s_stream = imx258_set_stream,
1198 };
1199
1200 static const struct v4l2_subdev_pad_ops imx258_pad_ops = {
1201 .enum_mbus_code = imx258_enum_mbus_code,
1202 .get_fmt = imx258_get_pad_format,
1203 .set_fmt = imx258_set_pad_format,
1204 .enum_frame_size = imx258_enum_frame_size,
1205 .get_selection = imx258_get_selection,
1206 };
1207
1208 static const struct v4l2_subdev_ops imx258_subdev_ops = {
1209 .video = &imx258_video_ops,
1210 .pad = &imx258_pad_ops,
1211 };
1212
1213 static const struct v4l2_subdev_internal_ops imx258_internal_ops = {
1214 .open = imx258_open,
1215 };
1216
1217 /* Initialize control handlers */
imx258_init_controls(struct imx258 * imx258)1218 static int imx258_init_controls(struct imx258 *imx258)
1219 {
1220 struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
1221 const struct imx258_link_freq_config *link_freq_cfgs;
1222 struct v4l2_fwnode_device_properties props;
1223 struct v4l2_ctrl_handler *ctrl_hdlr;
1224 const struct imx258_link_cfg *link_cfg;
1225 s64 vblank_def;
1226 s64 vblank_min;
1227 s64 pixel_rate;
1228 int ret;
1229
1230 ctrl_hdlr = &imx258->ctrl_handler;
1231 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 13);
1232 if (ret)
1233 return ret;
1234
1235 mutex_init(&imx258->mutex);
1236 ctrl_hdlr->lock = &imx258->mutex;
1237 imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
1238 &imx258_ctrl_ops,
1239 V4L2_CID_LINK_FREQ,
1240 ARRAY_SIZE(link_freq_menu_items_19_2) - 1,
1241 0,
1242 imx258->link_freq_menu_items);
1243
1244 if (imx258->link_freq)
1245 imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1246
1247 imx258->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
1248 V4L2_CID_HFLIP, 0, 1, 1, 1);
1249 if (imx258->hflip)
1250 imx258->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1251
1252 imx258->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
1253 V4L2_CID_VFLIP, 0, 1, 1, 1);
1254 if (imx258->vflip)
1255 imx258->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1256
1257 link_freq_cfgs = &imx258->link_freq_configs[0];
1258 link_cfg = link_freq_cfgs[imx258->lane_mode_idx].link_cfg;
1259 pixel_rate = link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
1260 link_cfg);
1261
1262 /* By default, PIXEL_RATE is read only */
1263 imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
1264 V4L2_CID_PIXEL_RATE,
1265 pixel_rate, pixel_rate,
1266 1, pixel_rate);
1267
1268 vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height;
1269 vblank_min = imx258->cur_mode->vts_min - imx258->cur_mode->height;
1270 imx258->vblank = v4l2_ctrl_new_std(
1271 ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_VBLANK,
1272 vblank_min,
1273 IMX258_VTS_MAX - imx258->cur_mode->height, 1,
1274 vblank_def);
1275
1276 imx258->hblank = v4l2_ctrl_new_std(
1277 ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK,
1278 IMX258_PPL_DEFAULT - imx258->cur_mode->width,
1279 IMX258_PPL_DEFAULT - imx258->cur_mode->width,
1280 1,
1281 IMX258_PPL_DEFAULT - imx258->cur_mode->width);
1282
1283 if (imx258->hblank)
1284 imx258->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1285
1286 imx258->exposure = v4l2_ctrl_new_std(
1287 ctrl_hdlr, &imx258_ctrl_ops,
1288 V4L2_CID_EXPOSURE, IMX258_EXPOSURE_MIN,
1289 IMX258_EXPOSURE_MAX, IMX258_EXPOSURE_STEP,
1290 IMX258_EXPOSURE_DEFAULT);
1291
1292 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
1293 IMX258_ANA_GAIN_MIN, IMX258_ANA_GAIN_MAX,
1294 IMX258_ANA_GAIN_STEP, IMX258_ANA_GAIN_DEFAULT);
1295
1296 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
1297 IMX258_DGTL_GAIN_MIN, IMX258_DGTL_GAIN_MAX,
1298 IMX258_DGTL_GAIN_STEP,
1299 IMX258_DGTL_GAIN_DEFAULT);
1300
1301 v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_WIDE_DYNAMIC_RANGE,
1302 0, 1, 1, IMX258_HDR_RATIO_DEFAULT);
1303
1304 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx258_ctrl_ops,
1305 V4L2_CID_TEST_PATTERN,
1306 ARRAY_SIZE(imx258_test_pattern_menu) - 1,
1307 0, 0, imx258_test_pattern_menu);
1308
1309 if (ctrl_hdlr->error) {
1310 ret = ctrl_hdlr->error;
1311 dev_err(&client->dev, "%s control init failed (%d)\n",
1312 __func__, ret);
1313 goto error;
1314 }
1315
1316 ret = v4l2_fwnode_device_parse(&client->dev, &props);
1317 if (ret)
1318 goto error;
1319
1320 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx258_ctrl_ops,
1321 &props);
1322 if (ret)
1323 goto error;
1324
1325 imx258->sd.ctrl_handler = ctrl_hdlr;
1326
1327 return 0;
1328
1329 error:
1330 v4l2_ctrl_handler_free(ctrl_hdlr);
1331 mutex_destroy(&imx258->mutex);
1332
1333 return ret;
1334 }
1335
imx258_free_controls(struct imx258 * imx258)1336 static void imx258_free_controls(struct imx258 *imx258)
1337 {
1338 v4l2_ctrl_handler_free(imx258->sd.ctrl_handler);
1339 mutex_destroy(&imx258->mutex);
1340 }
1341
imx258_get_regulators(struct imx258 * imx258,struct i2c_client * client)1342 static int imx258_get_regulators(struct imx258 *imx258,
1343 struct i2c_client *client)
1344 {
1345 unsigned int i;
1346
1347 for (i = 0; i < IMX258_NUM_SUPPLIES; i++)
1348 imx258->supplies[i].supply = imx258_supply_name[i];
1349
1350 return devm_regulator_bulk_get(&client->dev,
1351 IMX258_NUM_SUPPLIES, imx258->supplies);
1352 }
1353
imx258_probe(struct i2c_client * client)1354 static int imx258_probe(struct i2c_client *client)
1355 {
1356 struct imx258 *imx258;
1357 struct fwnode_handle *endpoint;
1358 struct v4l2_fwnode_endpoint ep = {
1359 .bus_type = V4L2_MBUS_CSI2_DPHY
1360 };
1361 int ret;
1362 u32 val = 0;
1363
1364 imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL);
1365 if (!imx258)
1366 return -ENOMEM;
1367
1368 imx258->regmap = devm_cci_regmap_init_i2c(client, 16);
1369 if (IS_ERR(imx258->regmap)) {
1370 ret = PTR_ERR(imx258->regmap);
1371 dev_err(&client->dev, "failed to initialize CCI: %d\n", ret);
1372 return ret;
1373 }
1374
1375 ret = imx258_get_regulators(imx258, client);
1376 if (ret)
1377 return dev_err_probe(&client->dev, ret,
1378 "failed to get regulators\n");
1379
1380 imx258->clk = devm_clk_get_optional(&client->dev, NULL);
1381 if (IS_ERR(imx258->clk))
1382 return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
1383 "error getting clock\n");
1384 if (!imx258->clk) {
1385 dev_dbg(&client->dev,
1386 "no clock provided, using clock-frequency property\n");
1387
1388 device_property_read_u32(&client->dev, "clock-frequency", &val);
1389 } else {
1390 val = clk_get_rate(imx258->clk);
1391 }
1392
1393 switch (val) {
1394 case 19200000:
1395 imx258->link_freq_configs = link_freq_configs_19_2;
1396 imx258->link_freq_menu_items = link_freq_menu_items_19_2;
1397 break;
1398 case 24000000:
1399 imx258->link_freq_configs = link_freq_configs_24;
1400 imx258->link_freq_menu_items = link_freq_menu_items_24;
1401 break;
1402 default:
1403 dev_err(&client->dev, "input clock frequency of %u not supported\n",
1404 val);
1405 return -EINVAL;
1406 }
1407
1408 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL);
1409 if (!endpoint) {
1410 dev_err(&client->dev, "Endpoint node not found\n");
1411 return -EINVAL;
1412 }
1413
1414 ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
1415 fwnode_handle_put(endpoint);
1416 if (ret) {
1417 dev_err(&client->dev, "Parsing endpoint node failed\n");
1418 return ret;
1419 }
1420
1421 ret = v4l2_link_freq_to_bitmap(&client->dev,
1422 ep.link_frequencies,
1423 ep.nr_of_link_frequencies,
1424 imx258->link_freq_menu_items,
1425 ARRAY_SIZE(link_freq_menu_items_19_2),
1426 &imx258->link_freq_bitmap);
1427 if (ret) {
1428 dev_err(&client->dev, "Link frequency not supported\n");
1429 goto error_endpoint_free;
1430 }
1431
1432 /* Get number of data lanes */
1433 switch (ep.bus.mipi_csi2.num_data_lanes) {
1434 case 2:
1435 imx258->lane_mode_idx = IMX258_2_LANE_MODE;
1436 break;
1437 case 4:
1438 imx258->lane_mode_idx = IMX258_4_LANE_MODE;
1439 break;
1440 default:
1441 dev_err(&client->dev, "Invalid data lanes: %u\n",
1442 ep.bus.mipi_csi2.num_data_lanes);
1443 ret = -EINVAL;
1444 goto error_endpoint_free;
1445 }
1446
1447 imx258->csi2_flags = ep.bus.mipi_csi2.flags;
1448
1449 imx258->variant_cfg = device_get_match_data(&client->dev);
1450 if (!imx258->variant_cfg)
1451 imx258->variant_cfg = &imx258_cfg;
1452
1453 /* Initialize subdev */
1454 v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
1455
1456 /* Will be powered off via pm_runtime_idle */
1457 ret = imx258_power_on(&client->dev);
1458 if (ret)
1459 goto error_endpoint_free;
1460
1461 /* Check module identity */
1462 ret = imx258_identify_module(imx258);
1463 if (ret)
1464 goto error_identify;
1465
1466 /* Set default mode to max resolution */
1467 imx258->cur_mode = &supported_modes[0];
1468
1469 ret = imx258_init_controls(imx258);
1470 if (ret)
1471 goto error_identify;
1472
1473 /* Initialize subdev */
1474 imx258->sd.internal_ops = &imx258_internal_ops;
1475 imx258->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1476 imx258->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1477
1478 /* Initialize source pad */
1479 imx258->pad.flags = MEDIA_PAD_FL_SOURCE;
1480
1481 ret = media_entity_pads_init(&imx258->sd.entity, 1, &imx258->pad);
1482 if (ret)
1483 goto error_handler_free;
1484
1485 ret = v4l2_async_register_subdev_sensor(&imx258->sd);
1486 if (ret < 0)
1487 goto error_media_entity;
1488
1489 pm_runtime_set_active(&client->dev);
1490 pm_runtime_enable(&client->dev);
1491 pm_runtime_idle(&client->dev);
1492 v4l2_fwnode_endpoint_free(&ep);
1493
1494 return 0;
1495
1496 error_media_entity:
1497 media_entity_cleanup(&imx258->sd.entity);
1498
1499 error_handler_free:
1500 imx258_free_controls(imx258);
1501
1502 error_identify:
1503 imx258_power_off(&client->dev);
1504
1505 error_endpoint_free:
1506 v4l2_fwnode_endpoint_free(&ep);
1507
1508 return ret;
1509 }
1510
imx258_remove(struct i2c_client * client)1511 static void imx258_remove(struct i2c_client *client)
1512 {
1513 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1514 struct imx258 *imx258 = to_imx258(sd);
1515
1516 v4l2_async_unregister_subdev(sd);
1517 media_entity_cleanup(&sd->entity);
1518 imx258_free_controls(imx258);
1519
1520 pm_runtime_disable(&client->dev);
1521 if (!pm_runtime_status_suspended(&client->dev))
1522 imx258_power_off(&client->dev);
1523 pm_runtime_set_suspended(&client->dev);
1524 }
1525
1526 static const struct dev_pm_ops imx258_pm_ops = {
1527 SET_RUNTIME_PM_OPS(imx258_power_off, imx258_power_on, NULL)
1528 };
1529
1530 #ifdef CONFIG_ACPI
1531 static const struct acpi_device_id imx258_acpi_ids[] = {
1532 { "SONY258A" },
1533 { /* sentinel */ }
1534 };
1535
1536 MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids);
1537 #endif
1538
1539 static const struct of_device_id imx258_dt_ids[] = {
1540 { .compatible = "sony,imx258", .data = &imx258_cfg },
1541 { .compatible = "sony,imx258-pdaf", .data = &imx258_pdaf_cfg },
1542 { /* sentinel */ }
1543 };
1544 MODULE_DEVICE_TABLE(of, imx258_dt_ids);
1545
1546 static struct i2c_driver imx258_i2c_driver = {
1547 .driver = {
1548 .name = "imx258",
1549 .pm = &imx258_pm_ops,
1550 .acpi_match_table = ACPI_PTR(imx258_acpi_ids),
1551 .of_match_table = imx258_dt_ids,
1552 },
1553 .probe = imx258_probe,
1554 .remove = imx258_remove,
1555 };
1556
1557 module_i2c_driver(imx258_i2c_driver);
1558
1559 MODULE_AUTHOR("Yeh, Andy <andy.yeh@intel.com>");
1560 MODULE_AUTHOR("Chiang, Alan");
1561 MODULE_AUTHOR("Chen, Jason");
1562 MODULE_DESCRIPTION("Sony IMX258 sensor driver");
1563 MODULE_LICENSE("GPL v2");
1564