1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
4 * Copyright (C) 2014-2017 Mentor Graphics Inc.
8 #include <linux/clk-provider.h>
9 #include <linux/clkdev.h>
10 #include <linux/ctype.h>
11 #include <linux/delay.h>
12 #include <linux/device.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/i2c.h>
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/of_device.h>
18 #include <linux/regulator/consumer.h>
19 #include <linux/slab.h>
20 #include <linux/types.h>
21 #include <media/v4l2-async.h>
22 #include <media/v4l2-ctrls.h>
23 #include <media/v4l2-device.h>
24 #include <media/v4l2-event.h>
25 #include <media/v4l2-fwnode.h>
26 #include <media/v4l2-subdev.h>
28 /* min/typical/max system clock (xclk) frequencies */
29 #define OV5640_XCLK_MIN 6000000
30 #define OV5640_XCLK_MAX 54000000
32 #define OV5640_DEFAULT_SLAVE_ID 0x3c
34 #define OV5640_REG_SYS_RESET02 0x3002
35 #define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006
36 #define OV5640_REG_SYS_CTRL0 0x3008
37 #define OV5640_REG_CHIP_ID 0x300a
38 #define OV5640_REG_IO_MIPI_CTRL00 0x300e
39 #define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017
40 #define OV5640_REG_PAD_OUTPUT_ENABLE02 0x3018
41 #define OV5640_REG_PAD_OUTPUT00 0x3019
42 #define OV5640_REG_SYSTEM_CONTROL1 0x302e
43 #define OV5640_REG_SC_PLL_CTRL0 0x3034
44 #define OV5640_REG_SC_PLL_CTRL1 0x3035
45 #define OV5640_REG_SC_PLL_CTRL2 0x3036
46 #define OV5640_REG_SC_PLL_CTRL3 0x3037
47 #define OV5640_REG_SLAVE_ID 0x3100
48 #define OV5640_REG_SCCB_SYS_CTRL1 0x3103
49 #define OV5640_REG_SYS_ROOT_DIVIDER 0x3108
50 #define OV5640_REG_AWB_R_GAIN 0x3400
51 #define OV5640_REG_AWB_G_GAIN 0x3402
52 #define OV5640_REG_AWB_B_GAIN 0x3404
53 #define OV5640_REG_AWB_MANUAL_CTRL 0x3406
54 #define OV5640_REG_AEC_PK_EXPOSURE_HI 0x3500
55 #define OV5640_REG_AEC_PK_EXPOSURE_MED 0x3501
56 #define OV5640_REG_AEC_PK_EXPOSURE_LO 0x3502
57 #define OV5640_REG_AEC_PK_MANUAL 0x3503
58 #define OV5640_REG_AEC_PK_REAL_GAIN 0x350a
59 #define OV5640_REG_AEC_PK_VTS 0x350c
60 #define OV5640_REG_TIMING_DVPHO 0x3808
61 #define OV5640_REG_TIMING_DVPVO 0x380a
62 #define OV5640_REG_TIMING_HTS 0x380c
63 #define OV5640_REG_TIMING_VTS 0x380e
64 #define OV5640_REG_TIMING_TC_REG20 0x3820
65 #define OV5640_REG_TIMING_TC_REG21 0x3821
66 #define OV5640_REG_AEC_CTRL00 0x3a00
67 #define OV5640_REG_AEC_B50_STEP 0x3a08
68 #define OV5640_REG_AEC_B60_STEP 0x3a0a
69 #define OV5640_REG_AEC_CTRL0D 0x3a0d
70 #define OV5640_REG_AEC_CTRL0E 0x3a0e
71 #define OV5640_REG_AEC_CTRL0F 0x3a0f
72 #define OV5640_REG_AEC_CTRL10 0x3a10
73 #define OV5640_REG_AEC_CTRL11 0x3a11
74 #define OV5640_REG_AEC_CTRL1B 0x3a1b
75 #define OV5640_REG_AEC_CTRL1E 0x3a1e
76 #define OV5640_REG_AEC_CTRL1F 0x3a1f
77 #define OV5640_REG_HZ5060_CTRL00 0x3c00
78 #define OV5640_REG_HZ5060_CTRL01 0x3c01
79 #define OV5640_REG_SIGMADELTA_CTRL0C 0x3c0c
80 #define OV5640_REG_FRAME_CTRL01 0x4202
81 #define OV5640_REG_FORMAT_CONTROL00 0x4300
82 #define OV5640_REG_VFIFO_HSIZE 0x4602
83 #define OV5640_REG_VFIFO_VSIZE 0x4604
84 #define OV5640_REG_JPG_MODE_SELECT 0x4713
85 #define OV5640_REG_POLARITY_CTRL00 0x4740
86 #define OV5640_REG_MIPI_CTRL00 0x4800
87 #define OV5640_REG_DEBUG_MODE 0x4814
88 #define OV5640_REG_ISP_FORMAT_MUX_CTRL 0x501f
89 #define OV5640_REG_PRE_ISP_TEST_SET1 0x503d
90 #define OV5640_REG_SDE_CTRL0 0x5580
91 #define OV5640_REG_SDE_CTRL1 0x5581
92 #define OV5640_REG_SDE_CTRL3 0x5583
93 #define OV5640_REG_SDE_CTRL4 0x5584
94 #define OV5640_REG_SDE_CTRL5 0x5585
95 #define OV5640_REG_AVG_READOUT 0x56a1
98 OV5640_MODE_QCIF_176_144
= 0,
99 OV5640_MODE_QVGA_320_240
,
100 OV5640_MODE_VGA_640_480
,
101 OV5640_MODE_NTSC_720_480
,
102 OV5640_MODE_PAL_720_576
,
103 OV5640_MODE_XGA_1024_768
,
104 OV5640_MODE_720P_1280_720
,
105 OV5640_MODE_1080P_1920_1080
,
106 OV5640_MODE_QSXGA_2592_1944
,
110 enum ov5640_frame_rate
{
114 OV5640_NUM_FRAMERATES
,
117 enum ov5640_format_mux
{
118 OV5640_FMT_MUX_YUV422
= 0,
120 OV5640_FMT_MUX_DITHER
,
121 OV5640_FMT_MUX_RAW_DPC
,
122 OV5640_FMT_MUX_SNR_RAW
,
123 OV5640_FMT_MUX_RAW_CIP
,
126 struct ov5640_pixfmt
{
131 static const struct ov5640_pixfmt ov5640_formats
[] = {
132 { MEDIA_BUS_FMT_JPEG_1X8
, V4L2_COLORSPACE_JPEG
, },
133 { MEDIA_BUS_FMT_UYVY8_2X8
, V4L2_COLORSPACE_SRGB
, },
134 { MEDIA_BUS_FMT_YUYV8_2X8
, V4L2_COLORSPACE_SRGB
, },
135 { MEDIA_BUS_FMT_RGB565_2X8_LE
, V4L2_COLORSPACE_SRGB
, },
136 { MEDIA_BUS_FMT_RGB565_2X8_BE
, V4L2_COLORSPACE_SRGB
, },
137 { MEDIA_BUS_FMT_SBGGR8_1X8
, V4L2_COLORSPACE_SRGB
, },
138 { MEDIA_BUS_FMT_SGBRG8_1X8
, V4L2_COLORSPACE_SRGB
, },
139 { MEDIA_BUS_FMT_SGRBG8_1X8
, V4L2_COLORSPACE_SRGB
, },
140 { MEDIA_BUS_FMT_SRGGB8_1X8
, V4L2_COLORSPACE_SRGB
, },
144 * FIXME: remove this when a subdev API becomes available
145 * to set the MIPI CSI-2 virtual channel.
147 static unsigned int virtual_channel
;
148 module_param(virtual_channel
, uint
, 0444);
149 MODULE_PARM_DESC(virtual_channel
,
150 "MIPI CSI-2 virtual channel (0..3), default 0");
152 static const int ov5640_framerates
[] = {
153 [OV5640_15_FPS
] = 15,
154 [OV5640_30_FPS
] = 30,
155 [OV5640_60_FPS
] = 60,
158 /* regulator supplies */
159 static const char * const ov5640_supply_name
[] = {
160 "DOVDD", /* Digital I/O (1.8V) supply */
161 "DVDD", /* Digital Core (1.5V) supply */
162 "AVDD", /* Analog (2.8V) supply */
165 #define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)
168 * Image size under 1280 * 960 are SUBSAMPLING
169 * Image size upper 1280 * 960 are SCALING
171 enum ov5640_downsize_mode
{
183 struct ov5640_mode_info
{
184 enum ov5640_mode_id id
;
185 enum ov5640_downsize_mode dn_mode
;
190 const struct reg_value
*reg_data
;
194 struct ov5640_ctrls
{
195 struct v4l2_ctrl_handler handler
;
197 struct v4l2_ctrl
*auto_exp
;
198 struct v4l2_ctrl
*exposure
;
201 struct v4l2_ctrl
*auto_wb
;
202 struct v4l2_ctrl
*blue_balance
;
203 struct v4l2_ctrl
*red_balance
;
206 struct v4l2_ctrl
*auto_gain
;
207 struct v4l2_ctrl
*gain
;
209 struct v4l2_ctrl
*brightness
;
210 struct v4l2_ctrl
*light_freq
;
211 struct v4l2_ctrl
*saturation
;
212 struct v4l2_ctrl
*contrast
;
213 struct v4l2_ctrl
*hue
;
214 struct v4l2_ctrl
*test_pattern
;
215 struct v4l2_ctrl
*hflip
;
216 struct v4l2_ctrl
*vflip
;
220 struct i2c_client
*i2c_client
;
221 struct v4l2_subdev sd
;
222 struct media_pad pad
;
223 struct v4l2_fwnode_endpoint ep
; /* the parsed DT endpoint info */
224 struct clk
*xclk
; /* system clock to OV5640 */
227 struct regulator_bulk_data supplies
[OV5640_NUM_SUPPLIES
];
228 struct gpio_desc
*reset_gpio
;
229 struct gpio_desc
*pwdn_gpio
;
232 /* lock to protect all members below */
237 struct v4l2_mbus_framefmt fmt
;
238 bool pending_fmt_change
;
240 const struct ov5640_mode_info
*current_mode
;
241 const struct ov5640_mode_info
*last_mode
;
242 enum ov5640_frame_rate current_fr
;
243 struct v4l2_fract frame_interval
;
245 struct ov5640_ctrls ctrls
;
247 u32 prev_sysclk
, prev_hts
;
248 u32 ae_low
, ae_high
, ae_target
;
250 bool pending_mode_change
;
254 static inline struct ov5640_dev
*to_ov5640_dev(struct v4l2_subdev
*sd
)
256 return container_of(sd
, struct ov5640_dev
, sd
);
259 static inline struct v4l2_subdev
*ctrl_to_sd(struct v4l2_ctrl
*ctrl
)
261 return &container_of(ctrl
->handler
, struct ov5640_dev
,
266 * FIXME: all of these register tables are likely filled with
267 * entries that set the register to their power-on default values,
268 * and which are otherwise not touched by this driver. Those entries
269 * should be identified and removed to speed register load time
272 /* YUV422 UYVY VGA@30fps */
273 static const struct reg_value ov5640_init_setting_30fps_VGA
[] = {
274 {0x3103, 0x11, 0, 0}, {0x3008, 0x82, 0, 5}, {0x3008, 0x42, 0, 0},
275 {0x3103, 0x03, 0, 0}, {0x3017, 0x00, 0, 0}, {0x3018, 0x00, 0, 0},
276 {0x3630, 0x36, 0, 0},
277 {0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0},
278 {0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
279 {0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x370b, 0x60, 0, 0},
280 {0x3705, 0x1a, 0, 0}, {0x3905, 0x02, 0, 0}, {0x3906, 0x10, 0, 0},
281 {0x3901, 0x0a, 0, 0}, {0x3731, 0x12, 0, 0}, {0x3600, 0x08, 0, 0},
282 {0x3601, 0x33, 0, 0}, {0x302d, 0x60, 0, 0}, {0x3620, 0x52, 0, 0},
283 {0x371b, 0x20, 0, 0}, {0x471c, 0x50, 0, 0}, {0x3a13, 0x43, 0, 0},
284 {0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3635, 0x13, 0, 0},
285 {0x3636, 0x03, 0, 0}, {0x3634, 0x40, 0, 0}, {0x3622, 0x01, 0, 0},
286 {0x3c01, 0xa4, 0, 0}, {0x3c04, 0x28, 0, 0}, {0x3c05, 0x98, 0, 0},
287 {0x3c06, 0x00, 0, 0}, {0x3c07, 0x08, 0, 0}, {0x3c08, 0x00, 0, 0},
288 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
289 {0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0}, {0x3814, 0x31, 0, 0},
290 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
291 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
292 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
293 {0x3810, 0x00, 0, 0},
294 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
295 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
296 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
297 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
298 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
299 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
300 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0},
301 {0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0},
302 {0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0},
303 {0x501f, 0x00, 0, 0}, {0x4407, 0x04, 0, 0},
304 {0x440e, 0x00, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
305 {0x4837, 0x0a, 0, 0}, {0x3824, 0x02, 0, 0},
306 {0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0},
307 {0x5181, 0xf2, 0, 0}, {0x5182, 0x00, 0, 0}, {0x5183, 0x14, 0, 0},
308 {0x5184, 0x25, 0, 0}, {0x5185, 0x24, 0, 0}, {0x5186, 0x09, 0, 0},
309 {0x5187, 0x09, 0, 0}, {0x5188, 0x09, 0, 0}, {0x5189, 0x88, 0, 0},
310 {0x518a, 0x54, 0, 0}, {0x518b, 0xee, 0, 0}, {0x518c, 0xb2, 0, 0},
311 {0x518d, 0x50, 0, 0}, {0x518e, 0x34, 0, 0}, {0x518f, 0x6b, 0, 0},
312 {0x5190, 0x46, 0, 0}, {0x5191, 0xf8, 0, 0}, {0x5192, 0x04, 0, 0},
313 {0x5193, 0x70, 0, 0}, {0x5194, 0xf0, 0, 0}, {0x5195, 0xf0, 0, 0},
314 {0x5196, 0x03, 0, 0}, {0x5197, 0x01, 0, 0}, {0x5198, 0x04, 0, 0},
315 {0x5199, 0x6c, 0, 0}, {0x519a, 0x04, 0, 0}, {0x519b, 0x00, 0, 0},
316 {0x519c, 0x09, 0, 0}, {0x519d, 0x2b, 0, 0}, {0x519e, 0x38, 0, 0},
317 {0x5381, 0x1e, 0, 0}, {0x5382, 0x5b, 0, 0}, {0x5383, 0x08, 0, 0},
318 {0x5384, 0x0a, 0, 0}, {0x5385, 0x7e, 0, 0}, {0x5386, 0x88, 0, 0},
319 {0x5387, 0x7c, 0, 0}, {0x5388, 0x6c, 0, 0}, {0x5389, 0x10, 0, 0},
320 {0x538a, 0x01, 0, 0}, {0x538b, 0x98, 0, 0}, {0x5300, 0x08, 0, 0},
321 {0x5301, 0x30, 0, 0}, {0x5302, 0x10, 0, 0}, {0x5303, 0x00, 0, 0},
322 {0x5304, 0x08, 0, 0}, {0x5305, 0x30, 0, 0}, {0x5306, 0x08, 0, 0},
323 {0x5307, 0x16, 0, 0}, {0x5309, 0x08, 0, 0}, {0x530a, 0x30, 0, 0},
324 {0x530b, 0x04, 0, 0}, {0x530c, 0x06, 0, 0}, {0x5480, 0x01, 0, 0},
325 {0x5481, 0x08, 0, 0}, {0x5482, 0x14, 0, 0}, {0x5483, 0x28, 0, 0},
326 {0x5484, 0x51, 0, 0}, {0x5485, 0x65, 0, 0}, {0x5486, 0x71, 0, 0},
327 {0x5487, 0x7d, 0, 0}, {0x5488, 0x87, 0, 0}, {0x5489, 0x91, 0, 0},
328 {0x548a, 0x9a, 0, 0}, {0x548b, 0xaa, 0, 0}, {0x548c, 0xb8, 0, 0},
329 {0x548d, 0xcd, 0, 0}, {0x548e, 0xdd, 0, 0}, {0x548f, 0xea, 0, 0},
330 {0x5490, 0x1d, 0, 0}, {0x5580, 0x02, 0, 0}, {0x5583, 0x40, 0, 0},
331 {0x5584, 0x10, 0, 0}, {0x5589, 0x10, 0, 0}, {0x558a, 0x00, 0, 0},
332 {0x558b, 0xf8, 0, 0}, {0x5800, 0x23, 0, 0}, {0x5801, 0x14, 0, 0},
333 {0x5802, 0x0f, 0, 0}, {0x5803, 0x0f, 0, 0}, {0x5804, 0x12, 0, 0},
334 {0x5805, 0x26, 0, 0}, {0x5806, 0x0c, 0, 0}, {0x5807, 0x08, 0, 0},
335 {0x5808, 0x05, 0, 0}, {0x5809, 0x05, 0, 0}, {0x580a, 0x08, 0, 0},
336 {0x580b, 0x0d, 0, 0}, {0x580c, 0x08, 0, 0}, {0x580d, 0x03, 0, 0},
337 {0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0}, {0x5810, 0x03, 0, 0},
338 {0x5811, 0x09, 0, 0}, {0x5812, 0x07, 0, 0}, {0x5813, 0x03, 0, 0},
339 {0x5814, 0x00, 0, 0}, {0x5815, 0x01, 0, 0}, {0x5816, 0x03, 0, 0},
340 {0x5817, 0x08, 0, 0}, {0x5818, 0x0d, 0, 0}, {0x5819, 0x08, 0, 0},
341 {0x581a, 0x05, 0, 0}, {0x581b, 0x06, 0, 0}, {0x581c, 0x08, 0, 0},
342 {0x581d, 0x0e, 0, 0}, {0x581e, 0x29, 0, 0}, {0x581f, 0x17, 0, 0},
343 {0x5820, 0x11, 0, 0}, {0x5821, 0x11, 0, 0}, {0x5822, 0x15, 0, 0},
344 {0x5823, 0x28, 0, 0}, {0x5824, 0x46, 0, 0}, {0x5825, 0x26, 0, 0},
345 {0x5826, 0x08, 0, 0}, {0x5827, 0x26, 0, 0}, {0x5828, 0x64, 0, 0},
346 {0x5829, 0x26, 0, 0}, {0x582a, 0x24, 0, 0}, {0x582b, 0x22, 0, 0},
347 {0x582c, 0x24, 0, 0}, {0x582d, 0x24, 0, 0}, {0x582e, 0x06, 0, 0},
348 {0x582f, 0x22, 0, 0}, {0x5830, 0x40, 0, 0}, {0x5831, 0x42, 0, 0},
349 {0x5832, 0x24, 0, 0}, {0x5833, 0x26, 0, 0}, {0x5834, 0x24, 0, 0},
350 {0x5835, 0x22, 0, 0}, {0x5836, 0x22, 0, 0}, {0x5837, 0x26, 0, 0},
351 {0x5838, 0x44, 0, 0}, {0x5839, 0x24, 0, 0}, {0x583a, 0x26, 0, 0},
352 {0x583b, 0x28, 0, 0}, {0x583c, 0x42, 0, 0}, {0x583d, 0xce, 0, 0},
353 {0x5025, 0x00, 0, 0}, {0x3a0f, 0x30, 0, 0}, {0x3a10, 0x28, 0, 0},
354 {0x3a1b, 0x30, 0, 0}, {0x3a1e, 0x26, 0, 0}, {0x3a11, 0x60, 0, 0},
355 {0x3a1f, 0x14, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3c00, 0x04, 0, 300},
358 static const struct reg_value ov5640_setting_VGA_640_480
[] = {
359 {0x3c07, 0x08, 0, 0},
360 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
361 {0x3814, 0x31, 0, 0},
362 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
363 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
364 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
365 {0x3810, 0x00, 0, 0},
366 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
367 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
368 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
369 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
370 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
371 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
372 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
373 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
374 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
377 static const struct reg_value ov5640_setting_XGA_1024_768
[] = {
378 {0x3c07, 0x08, 0, 0},
379 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
380 {0x3814, 0x31, 0, 0},
381 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
382 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
383 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
384 {0x3810, 0x00, 0, 0},
385 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
386 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
387 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
388 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
389 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
390 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
391 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
392 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
393 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
396 static const struct reg_value ov5640_setting_QVGA_320_240
[] = {
397 {0x3c07, 0x08, 0, 0},
398 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
399 {0x3814, 0x31, 0, 0},
400 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
401 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
402 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
403 {0x3810, 0x00, 0, 0},
404 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
405 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
406 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
407 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
408 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
409 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
410 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
411 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
412 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
415 static const struct reg_value ov5640_setting_QCIF_176_144
[] = {
416 {0x3c07, 0x08, 0, 0},
417 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
418 {0x3814, 0x31, 0, 0},
419 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
420 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
421 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
422 {0x3810, 0x00, 0, 0},
423 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
424 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
425 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
426 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
427 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
428 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
429 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
430 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
431 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
434 static const struct reg_value ov5640_setting_NTSC_720_480
[] = {
435 {0x3c07, 0x08, 0, 0},
436 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
437 {0x3814, 0x31, 0, 0},
438 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
439 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
440 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
441 {0x3810, 0x00, 0, 0},
442 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x3c, 0, 0},
443 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
444 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
445 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
446 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
447 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
448 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
449 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
450 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
453 static const struct reg_value ov5640_setting_PAL_720_576
[] = {
454 {0x3c07, 0x08, 0, 0},
455 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
456 {0x3814, 0x31, 0, 0},
457 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
458 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
459 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
460 {0x3810, 0x00, 0, 0},
461 {0x3811, 0x38, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
462 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
463 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
464 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
465 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
466 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
467 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
468 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
469 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
472 static const struct reg_value ov5640_setting_720P_1280_720
[] = {
473 {0x3c07, 0x07, 0, 0},
474 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
475 {0x3814, 0x31, 0, 0},
476 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
477 {0x3802, 0x00, 0, 0}, {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0},
478 {0x3805, 0x3f, 0, 0}, {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0},
479 {0x3810, 0x00, 0, 0},
480 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
481 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
482 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
483 {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
484 {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
485 {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
486 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
487 {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
488 {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
491 static const struct reg_value ov5640_setting_1080P_1920_1080
[] = {
492 {0x3008, 0x42, 0, 0},
493 {0x3c07, 0x08, 0, 0},
494 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
495 {0x3814, 0x11, 0, 0},
496 {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
497 {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
498 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
499 {0x3810, 0x00, 0, 0},
500 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
501 {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
502 {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
503 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
504 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
505 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
506 {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
507 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
508 {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
509 {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
510 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
511 {0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0},
512 {0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0},
513 {0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0},
514 {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
515 {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
516 {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
517 {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
518 {0x3a15, 0x60, 0, 0}, {0x4407, 0x04, 0, 0},
519 {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
520 {0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0},
523 static const struct reg_value ov5640_setting_QSXGA_2592_1944
[] = {
524 {0x3c07, 0x08, 0, 0},
525 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
526 {0x3814, 0x11, 0, 0},
527 {0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
528 {0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
529 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
530 {0x3810, 0x00, 0, 0},
531 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
532 {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
533 {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
534 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
535 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
536 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
537 {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
538 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
539 {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
542 /* power-on sensor init reg table */
543 static const struct ov5640_mode_info ov5640_mode_init_data
= {
544 0, SUBSAMPLING
, 640, 1896, 480, 984,
545 ov5640_init_setting_30fps_VGA
,
546 ARRAY_SIZE(ov5640_init_setting_30fps_VGA
),
549 static const struct ov5640_mode_info
550 ov5640_mode_data
[OV5640_NUM_MODES
] = {
551 {OV5640_MODE_QCIF_176_144
, SUBSAMPLING
,
553 ov5640_setting_QCIF_176_144
,
554 ARRAY_SIZE(ov5640_setting_QCIF_176_144
)},
555 {OV5640_MODE_QVGA_320_240
, SUBSAMPLING
,
557 ov5640_setting_QVGA_320_240
,
558 ARRAY_SIZE(ov5640_setting_QVGA_320_240
)},
559 {OV5640_MODE_VGA_640_480
, SUBSAMPLING
,
560 640, 1896, 480, 1080,
561 ov5640_setting_VGA_640_480
,
562 ARRAY_SIZE(ov5640_setting_VGA_640_480
)},
563 {OV5640_MODE_NTSC_720_480
, SUBSAMPLING
,
565 ov5640_setting_NTSC_720_480
,
566 ARRAY_SIZE(ov5640_setting_NTSC_720_480
)},
567 {OV5640_MODE_PAL_720_576
, SUBSAMPLING
,
569 ov5640_setting_PAL_720_576
,
570 ARRAY_SIZE(ov5640_setting_PAL_720_576
)},
571 {OV5640_MODE_XGA_1024_768
, SUBSAMPLING
,
572 1024, 1896, 768, 1080,
573 ov5640_setting_XGA_1024_768
,
574 ARRAY_SIZE(ov5640_setting_XGA_1024_768
)},
575 {OV5640_MODE_720P_1280_720
, SUBSAMPLING
,
576 1280, 1892, 720, 740,
577 ov5640_setting_720P_1280_720
,
578 ARRAY_SIZE(ov5640_setting_720P_1280_720
)},
579 {OV5640_MODE_1080P_1920_1080
, SCALING
,
580 1920, 2500, 1080, 1120,
581 ov5640_setting_1080P_1920_1080
,
582 ARRAY_SIZE(ov5640_setting_1080P_1920_1080
)},
583 {OV5640_MODE_QSXGA_2592_1944
, SCALING
,
584 2592, 2844, 1944, 1968,
585 ov5640_setting_QSXGA_2592_1944
,
586 ARRAY_SIZE(ov5640_setting_QSXGA_2592_1944
)},
589 static int ov5640_init_slave_id(struct ov5640_dev
*sensor
)
591 struct i2c_client
*client
= sensor
->i2c_client
;
596 if (client
->addr
== OV5640_DEFAULT_SLAVE_ID
)
599 buf
[0] = OV5640_REG_SLAVE_ID
>> 8;
600 buf
[1] = OV5640_REG_SLAVE_ID
& 0xff;
601 buf
[2] = client
->addr
<< 1;
603 msg
.addr
= OV5640_DEFAULT_SLAVE_ID
;
606 msg
.len
= sizeof(buf
);
608 ret
= i2c_transfer(client
->adapter
, &msg
, 1);
610 dev_err(&client
->dev
, "%s: failed with %d\n", __func__
, ret
);
617 static int ov5640_write_reg(struct ov5640_dev
*sensor
, u16 reg
, u8 val
)
619 struct i2c_client
*client
= sensor
->i2c_client
;
628 msg
.addr
= client
->addr
;
629 msg
.flags
= client
->flags
;
631 msg
.len
= sizeof(buf
);
633 ret
= i2c_transfer(client
->adapter
, &msg
, 1);
635 dev_err(&client
->dev
, "%s: error: reg=%x, val=%x\n",
643 static int ov5640_read_reg(struct ov5640_dev
*sensor
, u16 reg
, u8
*val
)
645 struct i2c_client
*client
= sensor
->i2c_client
;
646 struct i2c_msg msg
[2];
653 msg
[0].addr
= client
->addr
;
654 msg
[0].flags
= client
->flags
;
656 msg
[0].len
= sizeof(buf
);
658 msg
[1].addr
= client
->addr
;
659 msg
[1].flags
= client
->flags
| I2C_M_RD
;
663 ret
= i2c_transfer(client
->adapter
, msg
, 2);
665 dev_err(&client
->dev
, "%s: error: reg=%x\n",
674 static int ov5640_read_reg16(struct ov5640_dev
*sensor
, u16 reg
, u16
*val
)
679 ret
= ov5640_read_reg(sensor
, reg
, &hi
);
682 ret
= ov5640_read_reg(sensor
, reg
+ 1, &lo
);
686 *val
= ((u16
)hi
<< 8) | (u16
)lo
;
690 static int ov5640_write_reg16(struct ov5640_dev
*sensor
, u16 reg
, u16 val
)
694 ret
= ov5640_write_reg(sensor
, reg
, val
>> 8);
698 return ov5640_write_reg(sensor
, reg
+ 1, val
& 0xff);
701 static int ov5640_mod_reg(struct ov5640_dev
*sensor
, u16 reg
,
707 ret
= ov5640_read_reg(sensor
, reg
, &readval
);
715 return ov5640_write_reg(sensor
, reg
, val
);
719 * After trying the various combinations, reading various
720 * documentations spread around the net, and from the various
721 * feedback, the clock tree is probably as follows:
727 * +->| PLL1 | - reg 0x3036, for the multiplier
728 * +-+--------+ - reg 0x3037, bits 0-3 for the pre-divider
730 * +->| System Clock | - reg 0x3035, bits 4-7
733 * +->| MIPI Divider | - reg 0x3035, bits 0-3
735 * | +----------------> MIPI SCLK
737 * | +->| / 2 |-------> MIPI BIT CLK
740 * +->| PLL Root Div | - reg 0x3037, bit 4
743 * +->| Bit Div | - reg 0x3035, bits 0-3
746 * +->| SCLK Div | - reg 0x3108, bits 0-1
748 * | +---------------> SCLK
750 * +->| SCLK 2X Div | - reg 0x3108, bits 2-3
752 * | +---------------> SCLK 2X
754 * +->| PCLK Div | - reg 0x3108, bits 4-5
757 * +->| P_DIV | - reg 0x3035, bits 0-3
759 * +------------> PCLK
761 * This is deviating from the datasheet at least for the register
762 * 0x3108, since it's said here that the PCLK would be clocked from
765 * There seems to be also (unverified) constraints:
766 * - the PLL pre-divider output rate should be in the 4-27MHz range
767 * - the PLL multiplier output rate should be in the 500-1000MHz range
768 * - PCLK >= SCLK * 2 in YUV, >= SCLK in Raw or JPEG
770 * In the two latter cases, these constraints are met since our
771 * factors are hardcoded. If we were to change that, we would need to
772 * take this into account. The only varying parts are the PLL
773 * multiplier and the system clock divider, which are shared between
774 * all these clocks so won't cause any issue.
778 * This is supposed to be ranging from 1 to 8, but the value is always
779 * set to 3 in the vendor kernels.
781 #define OV5640_PLL_PREDIV 3
783 #define OV5640_PLL_MULT_MIN 4
784 #define OV5640_PLL_MULT_MAX 252
787 * This is supposed to be ranging from 1 to 16, but the value is
788 * always set to either 1 or 2 in the vendor kernels.
790 #define OV5640_SYSDIV_MIN 1
791 #define OV5640_SYSDIV_MAX 16
794 * Hardcode these values for scaler and non-scaler modes.
795 * FIXME: to be re-calcualted for 1 data lanes setups
797 #define OV5640_MIPI_DIV_PCLK 2
798 #define OV5640_MIPI_DIV_SCLK 1
801 * This is supposed to be ranging from 1 to 2, but the value is always
802 * set to 2 in the vendor kernels.
804 #define OV5640_PLL_ROOT_DIV 2
805 #define OV5640_PLL_CTRL3_PLL_ROOT_DIV_2 BIT(4)
808 * We only supports 8-bit formats at the moment
810 #define OV5640_BIT_DIV 2
811 #define OV5640_PLL_CTRL0_MIPI_MODE_8BIT 0x08
814 * This is supposed to be ranging from 1 to 8, but the value is always
815 * set to 2 in the vendor kernels.
817 #define OV5640_SCLK_ROOT_DIV 2
820 * This is hardcoded so that the consistency is maintained between SCLK and
823 #define OV5640_SCLK2X_ROOT_DIV (OV5640_SCLK_ROOT_DIV / 2)
826 * This is supposed to be ranging from 1 to 8, but the value is always
827 * set to 1 in the vendor kernels.
829 #define OV5640_PCLK_ROOT_DIV 1
830 #define OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS 0x00
832 static unsigned long ov5640_compute_sys_clk(struct ov5640_dev
*sensor
,
833 u8 pll_prediv
, u8 pll_mult
,
836 unsigned long sysclk
= sensor
->xclk_freq
/ pll_prediv
* pll_mult
;
838 /* PLL1 output cannot exceed 1GHz. */
839 if (sysclk
/ 1000000 > 1000)
842 return sysclk
/ sysdiv
;
845 static unsigned long ov5640_calc_sys_clk(struct ov5640_dev
*sensor
,
847 u8
*pll_prediv
, u8
*pll_mult
,
850 unsigned long best
= ~0;
851 u8 best_sysdiv
= 1, best_mult
= 1;
852 u8 _sysdiv
, _pll_mult
;
854 for (_sysdiv
= OV5640_SYSDIV_MIN
;
855 _sysdiv
<= OV5640_SYSDIV_MAX
;
857 for (_pll_mult
= OV5640_PLL_MULT_MIN
;
858 _pll_mult
<= OV5640_PLL_MULT_MAX
;
863 * The PLL multiplier cannot be odd if above
866 if (_pll_mult
> 127 && (_pll_mult
% 2))
869 _rate
= ov5640_compute_sys_clk(sensor
,
874 * We have reached the maximum allowed PLL1 output,
881 * Prefer rates above the expected clock rate than
882 * below, even if that means being less precise.
887 if (abs(rate
- _rate
) < abs(rate
- best
)) {
889 best_sysdiv
= _sysdiv
;
890 best_mult
= _pll_mult
;
899 *sysdiv
= best_sysdiv
;
900 *pll_prediv
= OV5640_PLL_PREDIV
;
901 *pll_mult
= best_mult
;
907 * ov5640_set_mipi_pclk() - Calculate the clock tree configuration values
908 * for the MIPI CSI-2 output.
910 * @rate: The requested bandwidth per lane in bytes per second.
911 * 'Bandwidth Per Lane' is calculated as:
912 * bpl = HTOT * VTOT * FPS * bpp / num_lanes;
914 * This function use the requested bandwidth to calculate:
915 * - sample_rate = bpl / (bpp / num_lanes);
916 * = bpl / (PLL_RDIV * BIT_DIV * PCLK_DIV * MIPI_DIV / num_lanes);
918 * - mipi_sclk = bpl / MIPI_DIV / 2; ( / 2 is for CSI-2 DDR)
920 * with these fixed parameters:
922 * BIT_DIVIDER = 2; (MIPI_BIT_MODE == 8 ? 2 : 2,5);
925 * The MIPI clock generation differs for modes that use the scaler and modes
926 * that do not. In case the scaler is in use, the MIPI_SCLK generates the MIPI
929 * - mipi_sclk = bpl / MIPI_DIV / 2;
932 * For modes that do not go through the scaler, the MIPI BIT CLOCK is generated
933 * from the pixel clock, and thus:
935 * - sample_rate = bpl / (bpp / num_lanes);
936 * = bpl / (2 * 2 * 1 * MIPI_DIV / num_lanes);
937 * = bpl / (4 * MIPI_DIV / num_lanes);
938 * - MIPI_DIV = bpp / (4 * num_lanes);
940 * FIXME: this have been tested with 16bpp and 2 lanes setup only.
941 * MIPI_DIV is fixed to value 2, but it -might- be changed according to the
942 * above formula for setups with 1 lane or image formats with different bpp.
944 * FIXME: this deviates from the sensor manual documentation which is quite
945 * thin on the MIPI clock tree generation part.
947 static int ov5640_set_mipi_pclk(struct ov5640_dev
*sensor
,
950 const struct ov5640_mode_info
*mode
= sensor
->current_mode
;
951 u8 prediv
, mult
, sysdiv
;
956 * 1280x720 is reported to use 'SUBSAMPLING' only,
957 * but according to the sensor manual it goes through the
958 * scaler before subsampling.
960 if (mode
->dn_mode
== SCALING
||
961 (mode
->id
== OV5640_MODE_720P_1280_720
))
962 mipi_div
= OV5640_MIPI_DIV_SCLK
;
964 mipi_div
= OV5640_MIPI_DIV_PCLK
;
966 ov5640_calc_sys_clk(sensor
, rate
, &prediv
, &mult
, &sysdiv
);
968 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL0
,
969 0x0f, OV5640_PLL_CTRL0_MIPI_MODE_8BIT
);
971 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL1
,
972 0xff, sysdiv
<< 4 | mipi_div
);
976 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL2
, 0xff, mult
);
980 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL3
,
981 0x1f, OV5640_PLL_CTRL3_PLL_ROOT_DIV_2
| prediv
);
985 return ov5640_mod_reg(sensor
, OV5640_REG_SYS_ROOT_DIVIDER
,
986 0x30, OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS
);
989 static unsigned long ov5640_calc_pclk(struct ov5640_dev
*sensor
,
991 u8
*pll_prediv
, u8
*pll_mult
, u8
*sysdiv
,
992 u8
*pll_rdiv
, u8
*bit_div
, u8
*pclk_div
)
994 unsigned long _rate
= rate
* OV5640_PLL_ROOT_DIV
* OV5640_BIT_DIV
*
995 OV5640_PCLK_ROOT_DIV
;
997 _rate
= ov5640_calc_sys_clk(sensor
, _rate
, pll_prediv
, pll_mult
,
999 *pll_rdiv
= OV5640_PLL_ROOT_DIV
;
1000 *bit_div
= OV5640_BIT_DIV
;
1001 *pclk_div
= OV5640_PCLK_ROOT_DIV
;
1003 return _rate
/ *pll_rdiv
/ *bit_div
/ *pclk_div
;
1006 static int ov5640_set_dvp_pclk(struct ov5640_dev
*sensor
, unsigned long rate
)
1008 u8 prediv
, mult
, sysdiv
, pll_rdiv
, bit_div
, pclk_div
;
1011 ov5640_calc_pclk(sensor
, rate
, &prediv
, &mult
, &sysdiv
, &pll_rdiv
,
1012 &bit_div
, &pclk_div
);
1017 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL0
,
1023 * We need to set sysdiv according to the clock, and to clear
1026 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL1
,
1031 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL2
,
1036 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SC_PLL_CTRL3
,
1037 0x1f, prediv
| ((pll_rdiv
- 1) << 4));
1041 return ov5640_mod_reg(sensor
, OV5640_REG_SYS_ROOT_DIVIDER
, 0x30,
1042 (ilog2(pclk_div
) << 4));
1045 /* set JPEG framing sizes */
1046 static int ov5640_set_jpeg_timings(struct ov5640_dev
*sensor
,
1047 const struct ov5640_mode_info
*mode
)
1052 * compression mode 3 timing
1054 * Data is transmitted with programmable width (VFIFO_HSIZE).
1055 * No padding done. Last line may have less data. Varying
1056 * number of lines per frame, depending on amount of data.
1058 ret
= ov5640_mod_reg(sensor
, OV5640_REG_JPG_MODE_SELECT
, 0x7, 0x3);
1062 ret
= ov5640_write_reg16(sensor
, OV5640_REG_VFIFO_HSIZE
, mode
->hact
);
1066 return ov5640_write_reg16(sensor
, OV5640_REG_VFIFO_VSIZE
, mode
->vact
);
1069 /* download ov5640 settings to sensor through i2c */
1070 static int ov5640_set_timings(struct ov5640_dev
*sensor
,
1071 const struct ov5640_mode_info
*mode
)
1075 if (sensor
->fmt
.code
== MEDIA_BUS_FMT_JPEG_1X8
) {
1076 ret
= ov5640_set_jpeg_timings(sensor
, mode
);
1081 ret
= ov5640_write_reg16(sensor
, OV5640_REG_TIMING_DVPHO
, mode
->hact
);
1085 ret
= ov5640_write_reg16(sensor
, OV5640_REG_TIMING_DVPVO
, mode
->vact
);
1089 ret
= ov5640_write_reg16(sensor
, OV5640_REG_TIMING_HTS
, mode
->htot
);
1093 return ov5640_write_reg16(sensor
, OV5640_REG_TIMING_VTS
, mode
->vtot
);
1096 static int ov5640_load_regs(struct ov5640_dev
*sensor
,
1097 const struct ov5640_mode_info
*mode
)
1099 const struct reg_value
*regs
= mode
->reg_data
;
1106 for (i
= 0; i
< mode
->reg_data_size
; ++i
, ++regs
) {
1107 delay_ms
= regs
->delay_ms
;
1108 reg_addr
= regs
->reg_addr
;
1113 ret
= ov5640_mod_reg(sensor
, reg_addr
, mask
, val
);
1115 ret
= ov5640_write_reg(sensor
, reg_addr
, val
);
1120 usleep_range(1000 * delay_ms
, 1000 * delay_ms
+ 100);
1123 return ov5640_set_timings(sensor
, mode
);
1126 static int ov5640_set_autoexposure(struct ov5640_dev
*sensor
, bool on
)
1128 return ov5640_mod_reg(sensor
, OV5640_REG_AEC_PK_MANUAL
,
1129 BIT(0), on
? 0 : BIT(0));
1132 /* read exposure, in number of line periods */
1133 static int ov5640_get_exposure(struct ov5640_dev
*sensor
)
1138 ret
= ov5640_read_reg(sensor
, OV5640_REG_AEC_PK_EXPOSURE_HI
, &temp
);
1141 exp
= ((int)temp
& 0x0f) << 16;
1142 ret
= ov5640_read_reg(sensor
, OV5640_REG_AEC_PK_EXPOSURE_MED
, &temp
);
1145 exp
|= ((int)temp
<< 8);
1146 ret
= ov5640_read_reg(sensor
, OV5640_REG_AEC_PK_EXPOSURE_LO
, &temp
);
1154 /* write exposure, given number of line periods */
1155 static int ov5640_set_exposure(struct ov5640_dev
*sensor
, u32 exposure
)
1161 ret
= ov5640_write_reg(sensor
,
1162 OV5640_REG_AEC_PK_EXPOSURE_LO
,
1166 ret
= ov5640_write_reg(sensor
,
1167 OV5640_REG_AEC_PK_EXPOSURE_MED
,
1168 (exposure
>> 8) & 0xff);
1171 return ov5640_write_reg(sensor
,
1172 OV5640_REG_AEC_PK_EXPOSURE_HI
,
1173 (exposure
>> 16) & 0x0f);
1176 static int ov5640_get_gain(struct ov5640_dev
*sensor
)
1181 ret
= ov5640_read_reg16(sensor
, OV5640_REG_AEC_PK_REAL_GAIN
, &gain
);
1185 return gain
& 0x3ff;
1188 static int ov5640_set_gain(struct ov5640_dev
*sensor
, int gain
)
1190 return ov5640_write_reg16(sensor
, OV5640_REG_AEC_PK_REAL_GAIN
,
1194 static int ov5640_set_autogain(struct ov5640_dev
*sensor
, bool on
)
1196 return ov5640_mod_reg(sensor
, OV5640_REG_AEC_PK_MANUAL
,
1197 BIT(1), on
? 0 : BIT(1));
1200 static int ov5640_set_stream_dvp(struct ov5640_dev
*sensor
, bool on
)
1203 unsigned int flags
= sensor
->ep
.bus
.parallel
.flags
;
1209 * Note about parallel port configuration.
1211 * When configured in parallel mode, the OV5640 will
1212 * output 10 bits data on DVP data lines [9:0].
1213 * If only 8 bits data are wanted, the 8 bits data lines
1214 * of the camera interface must be physically connected
1215 * on the DVP data lines [9:2].
1217 * Control lines polarity can be configured through
1218 * devicetree endpoint control lines properties.
1219 * If no endpoint control lines properties are set,
1220 * polarity will be as below:
1221 * - VSYNC: active high
1222 * - HREF: active low
1223 * - PCLK: active low
1228 * configure parallel port control lines polarity
1231 * - [5]: PCLK polarity (0: active low, 1: active high)
1232 * - [1]: HREF polarity (0: active low, 1: active high)
1233 * - [0]: VSYNC polarity (mismatch here between
1234 * datasheet and hardware, 0 is active high
1235 * and 1 is active low...)
1237 if (flags
& V4L2_MBUS_PCLK_SAMPLE_RISING
)
1239 if (flags
& V4L2_MBUS_HSYNC_ACTIVE_HIGH
)
1241 if (flags
& V4L2_MBUS_VSYNC_ACTIVE_LOW
)
1244 ret
= ov5640_write_reg(sensor
,
1245 OV5640_REG_POLARITY_CTRL00
,
1255 * powerdown MIPI TX/RX PHY & disable MIPI
1262 ret
= ov5640_write_reg(sensor
,
1263 OV5640_REG_IO_MIPI_CTRL00
, on
? 0x18 : 0);
1268 * enable VSYNC/HREF/PCLK DVP control lines
1269 * & D[9:6] DVP data lines
1271 * PAD OUTPUT ENABLE 01
1272 * - 6: VSYNC output enable
1273 * - 5: HREF output enable
1274 * - 4: PCLK output enable
1275 * - [3:0]: D[9:6] output enable
1277 ret
= ov5640_write_reg(sensor
,
1278 OV5640_REG_PAD_OUTPUT_ENABLE01
,
1284 * enable D[5:0] DVP data lines
1286 * PAD OUTPUT ENABLE 02
1287 * - [7:2]: D[5:0] output enable
1289 return ov5640_write_reg(sensor
,
1290 OV5640_REG_PAD_OUTPUT_ENABLE02
,
1294 static int ov5640_set_stream_mipi(struct ov5640_dev
*sensor
, bool on
)
1299 * Enable/disable the MIPI interface
1301 * 0x300e = on ? 0x45 : 0x40
1303 * FIXME: the sensor manual (version 2.03) reports
1304 * [7:5] = 000 : 1 data lane mode
1305 * [7:5] = 001 : 2 data lanes mode
1306 * But this settings do not work, while the following ones
1307 * have been validated for 2 data lanes mode.
1309 * [7:5] = 010 : 2 data lanes mode
1310 * [4] = 0 : Power up MIPI HS Tx
1311 * [3] = 0 : Power up MIPI LS Rx
1312 * [2] = 1/0 : MIPI interface enable/disable
1313 * [1:0] = 01/00: FIXME: 'debug'
1315 ret
= ov5640_write_reg(sensor
, OV5640_REG_IO_MIPI_CTRL00
,
1320 return ov5640_write_reg(sensor
, OV5640_REG_FRAME_CTRL01
,
1324 static int ov5640_get_sysclk(struct ov5640_dev
*sensor
)
1326 /* calculate sysclk */
1327 u32 xvclk
= sensor
->xclk_freq
/ 10000;
1328 u32 multiplier
, prediv
, VCO
, sysdiv
, pll_rdiv
;
1329 u32 sclk_rdiv_map
[] = {1, 2, 4, 8};
1330 u32 bit_div2x
= 1, sclk_rdiv
, sysclk
;
1334 ret
= ov5640_read_reg(sensor
, OV5640_REG_SC_PLL_CTRL0
, &temp1
);
1337 temp2
= temp1
& 0x0f;
1338 if (temp2
== 8 || temp2
== 10)
1339 bit_div2x
= temp2
/ 2;
1341 ret
= ov5640_read_reg(sensor
, OV5640_REG_SC_PLL_CTRL1
, &temp1
);
1344 sysdiv
= temp1
>> 4;
1348 ret
= ov5640_read_reg(sensor
, OV5640_REG_SC_PLL_CTRL2
, &temp1
);
1353 ret
= ov5640_read_reg(sensor
, OV5640_REG_SC_PLL_CTRL3
, &temp1
);
1356 prediv
= temp1
& 0x0f;
1357 pll_rdiv
= ((temp1
>> 4) & 0x01) + 1;
1359 ret
= ov5640_read_reg(sensor
, OV5640_REG_SYS_ROOT_DIVIDER
, &temp1
);
1362 temp2
= temp1
& 0x03;
1363 sclk_rdiv
= sclk_rdiv_map
[temp2
];
1365 if (!prediv
|| !sysdiv
|| !pll_rdiv
|| !bit_div2x
)
1368 VCO
= xvclk
* multiplier
/ prediv
;
1370 sysclk
= VCO
/ sysdiv
/ pll_rdiv
* 2 / bit_div2x
/ sclk_rdiv
;
1375 static int ov5640_set_night_mode(struct ov5640_dev
*sensor
)
1377 /* read HTS from register settings */
1381 ret
= ov5640_read_reg(sensor
, OV5640_REG_AEC_CTRL00
, &mode
);
1385 return ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL00
, mode
);
1388 static int ov5640_get_hts(struct ov5640_dev
*sensor
)
1390 /* read HTS from register settings */
1394 ret
= ov5640_read_reg16(sensor
, OV5640_REG_TIMING_HTS
, &hts
);
1400 static int ov5640_get_vts(struct ov5640_dev
*sensor
)
1405 ret
= ov5640_read_reg16(sensor
, OV5640_REG_TIMING_VTS
, &vts
);
1411 static int ov5640_set_vts(struct ov5640_dev
*sensor
, int vts
)
1413 return ov5640_write_reg16(sensor
, OV5640_REG_TIMING_VTS
, vts
);
1416 static int ov5640_get_light_freq(struct ov5640_dev
*sensor
)
1418 /* get banding filter value */
1419 int ret
, light_freq
= 0;
1422 ret
= ov5640_read_reg(sensor
, OV5640_REG_HZ5060_CTRL01
, &temp
);
1428 ret
= ov5640_read_reg(sensor
, OV5640_REG_HZ5060_CTRL00
,
1441 ret
= ov5640_read_reg(sensor
, OV5640_REG_SIGMADELTA_CTRL0C
,
1457 static int ov5640_set_bandingfilter(struct ov5640_dev
*sensor
)
1459 u32 band_step60
, max_band60
, band_step50
, max_band50
, prev_vts
;
1462 /* read preview PCLK */
1463 ret
= ov5640_get_sysclk(sensor
);
1468 sensor
->prev_sysclk
= ret
;
1469 /* read preview HTS */
1470 ret
= ov5640_get_hts(sensor
);
1475 sensor
->prev_hts
= ret
;
1477 /* read preview VTS */
1478 ret
= ov5640_get_vts(sensor
);
1483 /* calculate banding filter */
1485 band_step60
= sensor
->prev_sysclk
* 100 / sensor
->prev_hts
* 100 / 120;
1486 ret
= ov5640_write_reg16(sensor
, OV5640_REG_AEC_B60_STEP
, band_step60
);
1491 max_band60
= (int)((prev_vts
- 4) / band_step60
);
1492 ret
= ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL0D
, max_band60
);
1497 band_step50
= sensor
->prev_sysclk
* 100 / sensor
->prev_hts
;
1498 ret
= ov5640_write_reg16(sensor
, OV5640_REG_AEC_B50_STEP
, band_step50
);
1503 max_band50
= (int)((prev_vts
- 4) / band_step50
);
1504 return ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL0E
, max_band50
);
1507 static int ov5640_set_ae_target(struct ov5640_dev
*sensor
, int target
)
1509 /* stable in high */
1510 u32 fast_high
, fast_low
;
1513 sensor
->ae_low
= target
* 23 / 25; /* 0.92 */
1514 sensor
->ae_high
= target
* 27 / 25; /* 1.08 */
1516 fast_high
= sensor
->ae_high
<< 1;
1517 if (fast_high
> 255)
1520 fast_low
= sensor
->ae_low
>> 1;
1522 ret
= ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL0F
, sensor
->ae_high
);
1525 ret
= ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL10
, sensor
->ae_low
);
1528 ret
= ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL1B
, sensor
->ae_high
);
1531 ret
= ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL1E
, sensor
->ae_low
);
1534 ret
= ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL11
, fast_high
);
1537 return ov5640_write_reg(sensor
, OV5640_REG_AEC_CTRL1F
, fast_low
);
1540 static int ov5640_get_binning(struct ov5640_dev
*sensor
)
1545 ret
= ov5640_read_reg(sensor
, OV5640_REG_TIMING_TC_REG21
, &temp
);
1549 return temp
& BIT(0);
1552 static int ov5640_set_binning(struct ov5640_dev
*sensor
, bool enable
)
1558 * - [0]: Horizontal binning enable
1560 ret
= ov5640_mod_reg(sensor
, OV5640_REG_TIMING_TC_REG21
,
1561 BIT(0), enable
? BIT(0) : 0);
1566 * - [0]: Undocumented, but hardcoded init sequences
1567 * are always setting REG21/REG20 bit 0 to same value...
1569 return ov5640_mod_reg(sensor
, OV5640_REG_TIMING_TC_REG20
,
1570 BIT(0), enable
? BIT(0) : 0);
1573 static int ov5640_set_virtual_channel(struct ov5640_dev
*sensor
)
1575 struct i2c_client
*client
= sensor
->i2c_client
;
1576 u8 temp
, channel
= virtual_channel
;
1580 dev_err(&client
->dev
,
1581 "%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
1586 ret
= ov5640_read_reg(sensor
, OV5640_REG_DEBUG_MODE
, &temp
);
1590 temp
|= (channel
<< 6);
1591 return ov5640_write_reg(sensor
, OV5640_REG_DEBUG_MODE
, temp
);
1594 static const struct ov5640_mode_info
*
1595 ov5640_find_mode(struct ov5640_dev
*sensor
, enum ov5640_frame_rate fr
,
1596 int width
, int height
, bool nearest
)
1598 const struct ov5640_mode_info
*mode
;
1600 mode
= v4l2_find_nearest_size(ov5640_mode_data
,
1601 ARRAY_SIZE(ov5640_mode_data
),
1606 (!nearest
&& (mode
->hact
!= width
|| mode
->vact
!= height
)))
1609 /* Only 640x480 can operate at 60fps (for now) */
1610 if (fr
== OV5640_60_FPS
&&
1611 !(mode
->hact
== 640 && mode
->vact
== 480))
1618 * sensor changes between scaling and subsampling, go through
1619 * exposure calculation
1621 static int ov5640_set_mode_exposure_calc(struct ov5640_dev
*sensor
,
1622 const struct ov5640_mode_info
*mode
)
1624 u32 prev_shutter
, prev_gain16
;
1625 u32 cap_shutter
, cap_gain16
;
1626 u32 cap_sysclk
, cap_hts
, cap_vts
;
1627 u32 light_freq
, cap_bandfilt
, cap_maxband
;
1628 u32 cap_gain16_shutter
;
1632 if (!mode
->reg_data
)
1635 /* read preview shutter */
1636 ret
= ov5640_get_exposure(sensor
);
1640 ret
= ov5640_get_binning(sensor
);
1643 if (ret
&& mode
->id
!= OV5640_MODE_720P_1280_720
&&
1644 mode
->id
!= OV5640_MODE_1080P_1920_1080
)
1647 /* read preview gain */
1648 ret
= ov5640_get_gain(sensor
);
1654 ret
= ov5640_read_reg(sensor
, OV5640_REG_AVG_READOUT
, &average
);
1658 /* turn off night mode for capture */
1659 ret
= ov5640_set_night_mode(sensor
);
1663 /* Write capture setting */
1664 ret
= ov5640_load_regs(sensor
, mode
);
1668 /* read capture VTS */
1669 ret
= ov5640_get_vts(sensor
);
1673 ret
= ov5640_get_hts(sensor
);
1680 ret
= ov5640_get_sysclk(sensor
);
1687 /* calculate capture banding filter */
1688 ret
= ov5640_get_light_freq(sensor
);
1693 if (light_freq
== 60) {
1695 cap_bandfilt
= cap_sysclk
* 100 / cap_hts
* 100 / 120;
1698 cap_bandfilt
= cap_sysclk
* 100 / cap_hts
;
1701 if (!sensor
->prev_sysclk
) {
1702 ret
= ov5640_get_sysclk(sensor
);
1707 sensor
->prev_sysclk
= ret
;
1713 cap_maxband
= (int)((cap_vts
- 4) / cap_bandfilt
);
1715 /* calculate capture shutter/gain16 */
1716 if (average
> sensor
->ae_low
&& average
< sensor
->ae_high
) {
1717 /* in stable range */
1718 cap_gain16_shutter
=
1719 prev_gain16
* prev_shutter
*
1720 cap_sysclk
/ sensor
->prev_sysclk
*
1721 sensor
->prev_hts
/ cap_hts
*
1722 sensor
->ae_target
/ average
;
1724 cap_gain16_shutter
=
1725 prev_gain16
* prev_shutter
*
1726 cap_sysclk
/ sensor
->prev_sysclk
*
1727 sensor
->prev_hts
/ cap_hts
;
1730 /* gain to shutter */
1731 if (cap_gain16_shutter
< (cap_bandfilt
* 16)) {
1732 /* shutter < 1/100 */
1733 cap_shutter
= cap_gain16_shutter
/ 16;
1734 if (cap_shutter
< 1)
1737 cap_gain16
= cap_gain16_shutter
/ cap_shutter
;
1738 if (cap_gain16
< 16)
1741 if (cap_gain16_shutter
> (cap_bandfilt
* cap_maxband
* 16)) {
1742 /* exposure reach max */
1743 cap_shutter
= cap_bandfilt
* cap_maxband
;
1747 cap_gain16
= cap_gain16_shutter
/ cap_shutter
;
1749 /* 1/100 < (cap_shutter = n/100) =< max */
1751 ((int)(cap_gain16_shutter
/ 16 / cap_bandfilt
))
1756 cap_gain16
= cap_gain16_shutter
/ cap_shutter
;
1760 /* set capture gain */
1761 ret
= ov5640_set_gain(sensor
, cap_gain16
);
1765 /* write capture shutter */
1766 if (cap_shutter
> (cap_vts
- 4)) {
1767 cap_vts
= cap_shutter
+ 4;
1768 ret
= ov5640_set_vts(sensor
, cap_vts
);
1774 return ov5640_set_exposure(sensor
, cap_shutter
);
1778 * if sensor changes inside scaling or subsampling
1779 * change mode directly
1781 static int ov5640_set_mode_direct(struct ov5640_dev
*sensor
,
1782 const struct ov5640_mode_info
*mode
)
1784 if (!mode
->reg_data
)
1787 /* Write capture setting */
1788 return ov5640_load_regs(sensor
, mode
);
1791 static int ov5640_set_mode(struct ov5640_dev
*sensor
)
1793 const struct ov5640_mode_info
*mode
= sensor
->current_mode
;
1794 const struct ov5640_mode_info
*orig_mode
= sensor
->last_mode
;
1795 enum ov5640_downsize_mode dn_mode
, orig_dn_mode
;
1796 bool auto_gain
= sensor
->ctrls
.auto_gain
->val
== 1;
1797 bool auto_exp
= sensor
->ctrls
.auto_exp
->val
== V4L2_EXPOSURE_AUTO
;
1801 dn_mode
= mode
->dn_mode
;
1802 orig_dn_mode
= orig_mode
->dn_mode
;
1804 /* auto gain and exposure must be turned off when changing modes */
1806 ret
= ov5640_set_autogain(sensor
, false);
1812 ret
= ov5640_set_autoexposure(sensor
, false);
1814 goto restore_auto_gain
;
1818 * All the formats we support have 16 bits per pixel, seems to require
1819 * the same rate than YUV, so we can just use 16 bpp all the time.
1821 rate
= mode
->vtot
* mode
->htot
* 16;
1822 rate
*= ov5640_framerates
[sensor
->current_fr
];
1823 if (sensor
->ep
.bus_type
== V4L2_MBUS_CSI2_DPHY
) {
1824 rate
= rate
/ sensor
->ep
.bus
.mipi_csi2
.num_data_lanes
;
1825 ret
= ov5640_set_mipi_pclk(sensor
, rate
);
1827 rate
= rate
/ sensor
->ep
.bus
.parallel
.bus_width
;
1828 ret
= ov5640_set_dvp_pclk(sensor
, rate
);
1834 if ((dn_mode
== SUBSAMPLING
&& orig_dn_mode
== SCALING
) ||
1835 (dn_mode
== SCALING
&& orig_dn_mode
== SUBSAMPLING
)) {
1837 * change between subsampling and scaling
1838 * go through exposure calculation
1840 ret
= ov5640_set_mode_exposure_calc(sensor
, mode
);
1843 * change inside subsampling or scaling
1844 * download firmware directly
1846 ret
= ov5640_set_mode_direct(sensor
, mode
);
1849 goto restore_auto_exp_gain
;
1851 /* restore auto gain and exposure */
1853 ov5640_set_autogain(sensor
, true);
1855 ov5640_set_autoexposure(sensor
, true);
1857 ret
= ov5640_set_binning(sensor
, dn_mode
!= SCALING
);
1860 ret
= ov5640_set_ae_target(sensor
, sensor
->ae_target
);
1863 ret
= ov5640_get_light_freq(sensor
);
1866 ret
= ov5640_set_bandingfilter(sensor
);
1869 ret
= ov5640_set_virtual_channel(sensor
);
1873 sensor
->pending_mode_change
= false;
1874 sensor
->last_mode
= mode
;
1878 restore_auto_exp_gain
:
1880 ov5640_set_autoexposure(sensor
, true);
1883 ov5640_set_autogain(sensor
, true);
1888 static int ov5640_set_framefmt(struct ov5640_dev
*sensor
,
1889 struct v4l2_mbus_framefmt
*format
);
1891 /* restore the last set video mode after chip power-on */
1892 static int ov5640_restore_mode(struct ov5640_dev
*sensor
)
1896 /* first load the initial register values */
1897 ret
= ov5640_load_regs(sensor
, &ov5640_mode_init_data
);
1900 sensor
->last_mode
= &ov5640_mode_init_data
;
1902 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SYS_ROOT_DIVIDER
, 0x3f,
1903 (ilog2(OV5640_SCLK2X_ROOT_DIV
) << 2) |
1904 ilog2(OV5640_SCLK_ROOT_DIV
));
1908 /* now restore the last capture mode */
1909 ret
= ov5640_set_mode(sensor
);
1913 return ov5640_set_framefmt(sensor
, &sensor
->fmt
);
1916 static void ov5640_power(struct ov5640_dev
*sensor
, bool enable
)
1918 gpiod_set_value_cansleep(sensor
->pwdn_gpio
, enable
? 0 : 1);
1921 static void ov5640_reset(struct ov5640_dev
*sensor
)
1923 if (!sensor
->reset_gpio
)
1926 gpiod_set_value_cansleep(sensor
->reset_gpio
, 0);
1928 /* camera power cycle */
1929 ov5640_power(sensor
, false);
1930 usleep_range(5000, 10000);
1931 ov5640_power(sensor
, true);
1932 usleep_range(5000, 10000);
1934 gpiod_set_value_cansleep(sensor
->reset_gpio
, 1);
1935 usleep_range(1000, 2000);
1937 gpiod_set_value_cansleep(sensor
->reset_gpio
, 0);
1938 usleep_range(20000, 25000);
1941 static int ov5640_set_power_on(struct ov5640_dev
*sensor
)
1943 struct i2c_client
*client
= sensor
->i2c_client
;
1946 ret
= clk_prepare_enable(sensor
->xclk
);
1948 dev_err(&client
->dev
, "%s: failed to enable clock\n",
1953 ret
= regulator_bulk_enable(OV5640_NUM_SUPPLIES
,
1956 dev_err(&client
->dev
, "%s: failed to enable regulators\n",
1961 ov5640_reset(sensor
);
1962 ov5640_power(sensor
, true);
1964 ret
= ov5640_init_slave_id(sensor
);
1971 ov5640_power(sensor
, false);
1972 regulator_bulk_disable(OV5640_NUM_SUPPLIES
, sensor
->supplies
);
1974 clk_disable_unprepare(sensor
->xclk
);
1978 static void ov5640_set_power_off(struct ov5640_dev
*sensor
)
1980 ov5640_power(sensor
, false);
1981 regulator_bulk_disable(OV5640_NUM_SUPPLIES
, sensor
->supplies
);
1982 clk_disable_unprepare(sensor
->xclk
);
1985 static int ov5640_set_power(struct ov5640_dev
*sensor
, bool on
)
1990 ret
= ov5640_set_power_on(sensor
);
1994 ret
= ov5640_restore_mode(sensor
);
1998 /* We're done here for DVP bus, while CSI-2 needs setup. */
1999 if (sensor
->ep
.bus_type
!= V4L2_MBUS_CSI2_DPHY
)
2003 * Power up MIPI HS Tx and LS Rx; 2 data lanes mode
2006 * [7:5] = 010 : 2 data lanes mode (see FIXME note in
2007 * "ov5640_set_stream_mipi()")
2008 * [4] = 0 : Power up MIPI HS Tx
2009 * [3] = 0 : Power up MIPI LS Rx
2010 * [2] = 0 : MIPI interface disabled
2012 ret
= ov5640_write_reg(sensor
,
2013 OV5640_REG_IO_MIPI_CTRL00
, 0x40);
2018 * Gate clock and set LP11 in 'no packets mode' (idle)
2021 * [5] = 1 : Gate clock when 'no packets'
2022 * [2] = 1 : MIPI bus in LP11 when 'no packets'
2024 ret
= ov5640_write_reg(sensor
,
2025 OV5640_REG_MIPI_CTRL00
, 0x24);
2030 * Set data lanes and clock in LP11 when 'sleeping'
2033 * [6] = 1 : MIPI data lane 2 in LP11 when 'sleeping'
2034 * [5] = 1 : MIPI data lane 1 in LP11 when 'sleeping'
2035 * [4] = 1 : MIPI clock lane in LP11 when 'sleeping'
2037 ret
= ov5640_write_reg(sensor
,
2038 OV5640_REG_PAD_OUTPUT00
, 0x70);
2042 /* Give lanes some time to coax into LP11 state. */
2043 usleep_range(500, 1000);
2046 if (sensor
->ep
.bus_type
== V4L2_MBUS_CSI2_DPHY
) {
2047 /* Reset MIPI bus settings to their default values. */
2048 ov5640_write_reg(sensor
,
2049 OV5640_REG_IO_MIPI_CTRL00
, 0x58);
2050 ov5640_write_reg(sensor
,
2051 OV5640_REG_MIPI_CTRL00
, 0x04);
2052 ov5640_write_reg(sensor
,
2053 OV5640_REG_PAD_OUTPUT00
, 0x00);
2056 ov5640_set_power_off(sensor
);
2062 ov5640_set_power_off(sensor
);
2066 /* --------------- Subdev Operations --------------- */
2068 static int ov5640_s_power(struct v4l2_subdev
*sd
, int on
)
2070 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2073 mutex_lock(&sensor
->lock
);
2076 * If the power count is modified from 0 to != 0 or from != 0 to 0,
2077 * update the power state.
2079 if (sensor
->power_count
== !on
) {
2080 ret
= ov5640_set_power(sensor
, !!on
);
2085 /* Update the power count. */
2086 sensor
->power_count
+= on
? 1 : -1;
2087 WARN_ON(sensor
->power_count
< 0);
2089 mutex_unlock(&sensor
->lock
);
2091 if (on
&& !ret
&& sensor
->power_count
== 1) {
2092 /* restore controls */
2093 ret
= v4l2_ctrl_handler_setup(&sensor
->ctrls
.handler
);
2099 static int ov5640_try_frame_interval(struct ov5640_dev
*sensor
,
2100 struct v4l2_fract
*fi
,
2101 u32 width
, u32 height
)
2103 const struct ov5640_mode_info
*mode
;
2104 enum ov5640_frame_rate rate
= OV5640_15_FPS
;
2105 int minfps
, maxfps
, best_fps
, fps
;
2108 minfps
= ov5640_framerates
[OV5640_15_FPS
];
2109 maxfps
= ov5640_framerates
[OV5640_60_FPS
];
2111 if (fi
->numerator
== 0) {
2112 fi
->denominator
= maxfps
;
2114 rate
= OV5640_60_FPS
;
2118 fps
= clamp_val(DIV_ROUND_CLOSEST(fi
->denominator
, fi
->numerator
),
2122 for (i
= 0; i
< ARRAY_SIZE(ov5640_framerates
); i
++) {
2123 int curr_fps
= ov5640_framerates
[i
];
2125 if (abs(curr_fps
- fps
) < abs(best_fps
- fps
)) {
2126 best_fps
= curr_fps
;
2132 fi
->denominator
= best_fps
;
2135 mode
= ov5640_find_mode(sensor
, rate
, width
, height
, false);
2136 return mode
? rate
: -EINVAL
;
2139 static int ov5640_get_fmt(struct v4l2_subdev
*sd
,
2140 struct v4l2_subdev_pad_config
*cfg
,
2141 struct v4l2_subdev_format
*format
)
2143 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2144 struct v4l2_mbus_framefmt
*fmt
;
2146 if (format
->pad
!= 0)
2149 mutex_lock(&sensor
->lock
);
2151 if (format
->which
== V4L2_SUBDEV_FORMAT_TRY
)
2152 fmt
= v4l2_subdev_get_try_format(&sensor
->sd
, cfg
,
2157 format
->format
= *fmt
;
2159 mutex_unlock(&sensor
->lock
);
2164 static int ov5640_try_fmt_internal(struct v4l2_subdev
*sd
,
2165 struct v4l2_mbus_framefmt
*fmt
,
2166 enum ov5640_frame_rate fr
,
2167 const struct ov5640_mode_info
**new_mode
)
2169 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2170 const struct ov5640_mode_info
*mode
;
2173 mode
= ov5640_find_mode(sensor
, fr
, fmt
->width
, fmt
->height
, true);
2176 fmt
->width
= mode
->hact
;
2177 fmt
->height
= mode
->vact
;
2182 for (i
= 0; i
< ARRAY_SIZE(ov5640_formats
); i
++)
2183 if (ov5640_formats
[i
].code
== fmt
->code
)
2185 if (i
>= ARRAY_SIZE(ov5640_formats
))
2188 fmt
->code
= ov5640_formats
[i
].code
;
2189 fmt
->colorspace
= ov5640_formats
[i
].colorspace
;
2190 fmt
->ycbcr_enc
= V4L2_MAP_YCBCR_ENC_DEFAULT(fmt
->colorspace
);
2191 fmt
->quantization
= V4L2_QUANTIZATION_FULL_RANGE
;
2192 fmt
->xfer_func
= V4L2_MAP_XFER_FUNC_DEFAULT(fmt
->colorspace
);
2197 static int ov5640_set_fmt(struct v4l2_subdev
*sd
,
2198 struct v4l2_subdev_pad_config
*cfg
,
2199 struct v4l2_subdev_format
*format
)
2201 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2202 const struct ov5640_mode_info
*new_mode
;
2203 struct v4l2_mbus_framefmt
*mbus_fmt
= &format
->format
;
2204 struct v4l2_mbus_framefmt
*fmt
;
2207 if (format
->pad
!= 0)
2210 mutex_lock(&sensor
->lock
);
2212 if (sensor
->streaming
) {
2217 ret
= ov5640_try_fmt_internal(sd
, mbus_fmt
,
2218 sensor
->current_fr
, &new_mode
);
2222 if (format
->which
== V4L2_SUBDEV_FORMAT_TRY
)
2223 fmt
= v4l2_subdev_get_try_format(sd
, cfg
, 0);
2229 if (new_mode
!= sensor
->current_mode
) {
2230 sensor
->current_mode
= new_mode
;
2231 sensor
->pending_mode_change
= true;
2233 if (mbus_fmt
->code
!= sensor
->fmt
.code
)
2234 sensor
->pending_fmt_change
= true;
2237 mutex_unlock(&sensor
->lock
);
2241 static int ov5640_set_framefmt(struct ov5640_dev
*sensor
,
2242 struct v4l2_mbus_framefmt
*format
)
2245 bool is_jpeg
= false;
2248 switch (format
->code
) {
2249 case MEDIA_BUS_FMT_UYVY8_2X8
:
2252 mux
= OV5640_FMT_MUX_YUV422
;
2254 case MEDIA_BUS_FMT_YUYV8_2X8
:
2257 mux
= OV5640_FMT_MUX_YUV422
;
2259 case MEDIA_BUS_FMT_RGB565_2X8_LE
:
2260 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
2262 mux
= OV5640_FMT_MUX_RGB
;
2264 case MEDIA_BUS_FMT_RGB565_2X8_BE
:
2265 /* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */
2267 mux
= OV5640_FMT_MUX_RGB
;
2269 case MEDIA_BUS_FMT_JPEG_1X8
:
2272 mux
= OV5640_FMT_MUX_YUV422
;
2275 case MEDIA_BUS_FMT_SBGGR8_1X8
:
2276 /* Raw, BGBG... / GRGR... */
2278 mux
= OV5640_FMT_MUX_RAW_DPC
;
2280 case MEDIA_BUS_FMT_SGBRG8_1X8
:
2281 /* Raw bayer, GBGB... / RGRG... */
2283 mux
= OV5640_FMT_MUX_RAW_DPC
;
2285 case MEDIA_BUS_FMT_SGRBG8_1X8
:
2286 /* Raw bayer, GRGR... / BGBG... */
2288 mux
= OV5640_FMT_MUX_RAW_DPC
;
2290 case MEDIA_BUS_FMT_SRGGB8_1X8
:
2291 /* Raw bayer, RGRG... / GBGB... */
2293 mux
= OV5640_FMT_MUX_RAW_DPC
;
2299 /* FORMAT CONTROL00: YUV and RGB formatting */
2300 ret
= ov5640_write_reg(sensor
, OV5640_REG_FORMAT_CONTROL00
, fmt
);
2304 /* FORMAT MUX CONTROL: ISP YUV or RGB */
2305 ret
= ov5640_write_reg(sensor
, OV5640_REG_ISP_FORMAT_MUX_CTRL
, mux
);
2311 * - [5]: JPEG enable
2313 ret
= ov5640_mod_reg(sensor
, OV5640_REG_TIMING_TC_REG21
,
2314 BIT(5), is_jpeg
? BIT(5) : 0);
2320 * - [4]: Reset JFIFO
2321 * - [3]: Reset SFIFO
2324 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SYS_RESET02
,
2325 BIT(4) | BIT(3) | BIT(2),
2326 is_jpeg
? 0 : (BIT(4) | BIT(3) | BIT(2)));
2332 * - [5]: Enable JPEG 2x clock
2333 * - [3]: Enable JPEG clock
2335 return ov5640_mod_reg(sensor
, OV5640_REG_SYS_CLOCK_ENABLE02
,
2337 is_jpeg
? (BIT(5) | BIT(3)) : 0);
2344 static int ov5640_set_ctrl_hue(struct ov5640_dev
*sensor
, int value
)
2349 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SDE_CTRL0
,
2353 ret
= ov5640_write_reg16(sensor
, OV5640_REG_SDE_CTRL1
, value
);
2355 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SDE_CTRL0
, BIT(0), 0);
2361 static int ov5640_set_ctrl_contrast(struct ov5640_dev
*sensor
, int value
)
2366 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SDE_CTRL0
,
2370 ret
= ov5640_write_reg(sensor
, OV5640_REG_SDE_CTRL5
,
2373 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SDE_CTRL0
, BIT(2), 0);
2379 static int ov5640_set_ctrl_saturation(struct ov5640_dev
*sensor
, int value
)
2384 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SDE_CTRL0
,
2388 ret
= ov5640_write_reg(sensor
, OV5640_REG_SDE_CTRL3
,
2392 ret
= ov5640_write_reg(sensor
, OV5640_REG_SDE_CTRL4
,
2395 ret
= ov5640_mod_reg(sensor
, OV5640_REG_SDE_CTRL0
, BIT(1), 0);
2401 static int ov5640_set_ctrl_white_balance(struct ov5640_dev
*sensor
, int awb
)
2405 ret
= ov5640_mod_reg(sensor
, OV5640_REG_AWB_MANUAL_CTRL
,
2406 BIT(0), awb
? 0 : 1);
2411 u16 red
= (u16
)sensor
->ctrls
.red_balance
->val
;
2412 u16 blue
= (u16
)sensor
->ctrls
.blue_balance
->val
;
2414 ret
= ov5640_write_reg16(sensor
, OV5640_REG_AWB_R_GAIN
, red
);
2417 ret
= ov5640_write_reg16(sensor
, OV5640_REG_AWB_B_GAIN
, blue
);
2423 static int ov5640_set_ctrl_exposure(struct ov5640_dev
*sensor
,
2424 enum v4l2_exposure_auto_type auto_exposure
)
2426 struct ov5640_ctrls
*ctrls
= &sensor
->ctrls
;
2427 bool auto_exp
= (auto_exposure
== V4L2_EXPOSURE_AUTO
);
2430 if (ctrls
->auto_exp
->is_new
) {
2431 ret
= ov5640_set_autoexposure(sensor
, auto_exp
);
2436 if (!auto_exp
&& ctrls
->exposure
->is_new
) {
2439 ret
= ov5640_read_reg16(sensor
, OV5640_REG_AEC_PK_VTS
,
2443 ret
= ov5640_get_vts(sensor
);
2449 if (ctrls
->exposure
->val
< max_exp
)
2450 ret
= ov5640_set_exposure(sensor
, ctrls
->exposure
->val
);
2456 static int ov5640_set_ctrl_gain(struct ov5640_dev
*sensor
, bool auto_gain
)
2458 struct ov5640_ctrls
*ctrls
= &sensor
->ctrls
;
2461 if (ctrls
->auto_gain
->is_new
) {
2462 ret
= ov5640_set_autogain(sensor
, auto_gain
);
2467 if (!auto_gain
&& ctrls
->gain
->is_new
)
2468 ret
= ov5640_set_gain(sensor
, ctrls
->gain
->val
);
2473 static const char * const test_pattern_menu
[] = {
2476 "Color bars w/ rolling bar",
2478 "Color squares w/ rolling bar",
2481 #define OV5640_TEST_ENABLE BIT(7)
2482 #define OV5640_TEST_ROLLING BIT(6) /* rolling horizontal bar */
2483 #define OV5640_TEST_TRANSPARENT BIT(5)
2484 #define OV5640_TEST_SQUARE_BW BIT(4) /* black & white squares */
2485 #define OV5640_TEST_BAR_STANDARD (0 << 2)
2486 #define OV5640_TEST_BAR_VERT_CHANGE_1 (1 << 2)
2487 #define OV5640_TEST_BAR_HOR_CHANGE (2 << 2)
2488 #define OV5640_TEST_BAR_VERT_CHANGE_2 (3 << 2)
2489 #define OV5640_TEST_BAR (0 << 0)
2490 #define OV5640_TEST_RANDOM (1 << 0)
2491 #define OV5640_TEST_SQUARE (2 << 0)
2492 #define OV5640_TEST_BLACK (3 << 0)
2494 static const u8 test_pattern_val
[] = {
2496 OV5640_TEST_ENABLE
| OV5640_TEST_BAR_VERT_CHANGE_1
|
2498 OV5640_TEST_ENABLE
| OV5640_TEST_ROLLING
|
2499 OV5640_TEST_BAR_VERT_CHANGE_1
| OV5640_TEST_BAR
,
2500 OV5640_TEST_ENABLE
| OV5640_TEST_SQUARE
,
2501 OV5640_TEST_ENABLE
| OV5640_TEST_ROLLING
| OV5640_TEST_SQUARE
,
2504 static int ov5640_set_ctrl_test_pattern(struct ov5640_dev
*sensor
, int value
)
2506 return ov5640_write_reg(sensor
, OV5640_REG_PRE_ISP_TEST_SET1
,
2507 test_pattern_val
[value
]);
2510 static int ov5640_set_ctrl_light_freq(struct ov5640_dev
*sensor
, int value
)
2514 ret
= ov5640_mod_reg(sensor
, OV5640_REG_HZ5060_CTRL01
, BIT(7),
2515 (value
== V4L2_CID_POWER_LINE_FREQUENCY_AUTO
) ?
2520 return ov5640_mod_reg(sensor
, OV5640_REG_HZ5060_CTRL00
, BIT(2),
2521 (value
== V4L2_CID_POWER_LINE_FREQUENCY_50HZ
) ?
2525 static int ov5640_set_ctrl_hflip(struct ov5640_dev
*sensor
, int value
)
2528 * If sensor is mounted upside down, mirror logic is inversed.
2530 * Sensor is a BSI (Back Side Illuminated) one,
2531 * so image captured is physically mirrored.
2532 * This is why mirror logic is inversed in
2533 * order to cancel this mirror effect.
2539 * - [1]: Sensor mirror
2541 return ov5640_mod_reg(sensor
, OV5640_REG_TIMING_TC_REG21
,
2543 (!(value
^ sensor
->upside_down
)) ?
2544 (BIT(2) | BIT(1)) : 0);
2547 static int ov5640_set_ctrl_vflip(struct ov5640_dev
*sensor
, int value
)
2549 /* If sensor is mounted upside down, flip logic is inversed */
2554 * - [1]: Sensor vflip
2556 return ov5640_mod_reg(sensor
, OV5640_REG_TIMING_TC_REG20
,
2558 (value
^ sensor
->upside_down
) ?
2559 (BIT(2) | BIT(1)) : 0);
2562 static int ov5640_g_volatile_ctrl(struct v4l2_ctrl
*ctrl
)
2564 struct v4l2_subdev
*sd
= ctrl_to_sd(ctrl
);
2565 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2568 /* v4l2_ctrl_lock() locks our own mutex */
2571 case V4L2_CID_AUTOGAIN
:
2572 val
= ov5640_get_gain(sensor
);
2575 sensor
->ctrls
.gain
->val
= val
;
2577 case V4L2_CID_EXPOSURE_AUTO
:
2578 val
= ov5640_get_exposure(sensor
);
2581 sensor
->ctrls
.exposure
->val
= val
;
2588 static int ov5640_s_ctrl(struct v4l2_ctrl
*ctrl
)
2590 struct v4l2_subdev
*sd
= ctrl_to_sd(ctrl
);
2591 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2594 /* v4l2_ctrl_lock() locks our own mutex */
2597 * If the device is not powered up by the host driver do
2598 * not apply any controls to H/W at this time. Instead
2599 * the controls will be restored right after power-up.
2601 if (sensor
->power_count
== 0)
2605 case V4L2_CID_AUTOGAIN
:
2606 ret
= ov5640_set_ctrl_gain(sensor
, ctrl
->val
);
2608 case V4L2_CID_EXPOSURE_AUTO
:
2609 ret
= ov5640_set_ctrl_exposure(sensor
, ctrl
->val
);
2611 case V4L2_CID_AUTO_WHITE_BALANCE
:
2612 ret
= ov5640_set_ctrl_white_balance(sensor
, ctrl
->val
);
2615 ret
= ov5640_set_ctrl_hue(sensor
, ctrl
->val
);
2617 case V4L2_CID_CONTRAST
:
2618 ret
= ov5640_set_ctrl_contrast(sensor
, ctrl
->val
);
2620 case V4L2_CID_SATURATION
:
2621 ret
= ov5640_set_ctrl_saturation(sensor
, ctrl
->val
);
2623 case V4L2_CID_TEST_PATTERN
:
2624 ret
= ov5640_set_ctrl_test_pattern(sensor
, ctrl
->val
);
2626 case V4L2_CID_POWER_LINE_FREQUENCY
:
2627 ret
= ov5640_set_ctrl_light_freq(sensor
, ctrl
->val
);
2629 case V4L2_CID_HFLIP
:
2630 ret
= ov5640_set_ctrl_hflip(sensor
, ctrl
->val
);
2632 case V4L2_CID_VFLIP
:
2633 ret
= ov5640_set_ctrl_vflip(sensor
, ctrl
->val
);
2643 static const struct v4l2_ctrl_ops ov5640_ctrl_ops
= {
2644 .g_volatile_ctrl
= ov5640_g_volatile_ctrl
,
2645 .s_ctrl
= ov5640_s_ctrl
,
2648 static int ov5640_init_controls(struct ov5640_dev
*sensor
)
2650 const struct v4l2_ctrl_ops
*ops
= &ov5640_ctrl_ops
;
2651 struct ov5640_ctrls
*ctrls
= &sensor
->ctrls
;
2652 struct v4l2_ctrl_handler
*hdl
= &ctrls
->handler
;
2655 v4l2_ctrl_handler_init(hdl
, 32);
2657 /* we can use our own mutex for the ctrl lock */
2658 hdl
->lock
= &sensor
->lock
;
2660 /* Auto/manual white balance */
2661 ctrls
->auto_wb
= v4l2_ctrl_new_std(hdl
, ops
,
2662 V4L2_CID_AUTO_WHITE_BALANCE
,
2664 ctrls
->blue_balance
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_BLUE_BALANCE
,
2666 ctrls
->red_balance
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_RED_BALANCE
,
2668 /* Auto/manual exposure */
2669 ctrls
->auto_exp
= v4l2_ctrl_new_std_menu(hdl
, ops
,
2670 V4L2_CID_EXPOSURE_AUTO
,
2671 V4L2_EXPOSURE_MANUAL
, 0,
2672 V4L2_EXPOSURE_AUTO
);
2673 ctrls
->exposure
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_EXPOSURE
,
2675 /* Auto/manual gain */
2676 ctrls
->auto_gain
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_AUTOGAIN
,
2678 ctrls
->gain
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_GAIN
,
2681 ctrls
->saturation
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_SATURATION
,
2683 ctrls
->hue
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_HUE
,
2685 ctrls
->contrast
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_CONTRAST
,
2687 ctrls
->test_pattern
=
2688 v4l2_ctrl_new_std_menu_items(hdl
, ops
, V4L2_CID_TEST_PATTERN
,
2689 ARRAY_SIZE(test_pattern_menu
) - 1,
2690 0, 0, test_pattern_menu
);
2691 ctrls
->hflip
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_HFLIP
,
2693 ctrls
->vflip
= v4l2_ctrl_new_std(hdl
, ops
, V4L2_CID_VFLIP
,
2697 v4l2_ctrl_new_std_menu(hdl
, ops
,
2698 V4L2_CID_POWER_LINE_FREQUENCY
,
2699 V4L2_CID_POWER_LINE_FREQUENCY_AUTO
, 0,
2700 V4L2_CID_POWER_LINE_FREQUENCY_50HZ
);
2707 ctrls
->gain
->flags
|= V4L2_CTRL_FLAG_VOLATILE
;
2708 ctrls
->exposure
->flags
|= V4L2_CTRL_FLAG_VOLATILE
;
2710 v4l2_ctrl_auto_cluster(3, &ctrls
->auto_wb
, 0, false);
2711 v4l2_ctrl_auto_cluster(2, &ctrls
->auto_gain
, 0, true);
2712 v4l2_ctrl_auto_cluster(2, &ctrls
->auto_exp
, 1, true);
2714 sensor
->sd
.ctrl_handler
= hdl
;
2718 v4l2_ctrl_handler_free(hdl
);
2722 static int ov5640_enum_frame_size(struct v4l2_subdev
*sd
,
2723 struct v4l2_subdev_pad_config
*cfg
,
2724 struct v4l2_subdev_frame_size_enum
*fse
)
2728 if (fse
->index
>= OV5640_NUM_MODES
)
2732 ov5640_mode_data
[fse
->index
].hact
;
2733 fse
->max_width
= fse
->min_width
;
2735 ov5640_mode_data
[fse
->index
].vact
;
2736 fse
->max_height
= fse
->min_height
;
2741 static int ov5640_enum_frame_interval(
2742 struct v4l2_subdev
*sd
,
2743 struct v4l2_subdev_pad_config
*cfg
,
2744 struct v4l2_subdev_frame_interval_enum
*fie
)
2746 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2747 struct v4l2_fract tpf
;
2752 if (fie
->index
>= OV5640_NUM_FRAMERATES
)
2756 tpf
.denominator
= ov5640_framerates
[fie
->index
];
2758 ret
= ov5640_try_frame_interval(sensor
, &tpf
,
2759 fie
->width
, fie
->height
);
2763 fie
->interval
= tpf
;
2767 static int ov5640_g_frame_interval(struct v4l2_subdev
*sd
,
2768 struct v4l2_subdev_frame_interval
*fi
)
2770 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2772 mutex_lock(&sensor
->lock
);
2773 fi
->interval
= sensor
->frame_interval
;
2774 mutex_unlock(&sensor
->lock
);
2779 static int ov5640_s_frame_interval(struct v4l2_subdev
*sd
,
2780 struct v4l2_subdev_frame_interval
*fi
)
2782 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2783 const struct ov5640_mode_info
*mode
;
2784 int frame_rate
, ret
= 0;
2789 mutex_lock(&sensor
->lock
);
2791 if (sensor
->streaming
) {
2796 mode
= sensor
->current_mode
;
2798 frame_rate
= ov5640_try_frame_interval(sensor
, &fi
->interval
,
2799 mode
->hact
, mode
->vact
);
2800 if (frame_rate
< 0) {
2801 /* Always return a valid frame interval value */
2802 fi
->interval
= sensor
->frame_interval
;
2806 mode
= ov5640_find_mode(sensor
, frame_rate
, mode
->hact
,
2813 if (mode
!= sensor
->current_mode
||
2814 frame_rate
!= sensor
->current_fr
) {
2815 sensor
->current_fr
= frame_rate
;
2816 sensor
->frame_interval
= fi
->interval
;
2817 sensor
->current_mode
= mode
;
2818 sensor
->pending_mode_change
= true;
2821 mutex_unlock(&sensor
->lock
);
2825 static int ov5640_enum_mbus_code(struct v4l2_subdev
*sd
,
2826 struct v4l2_subdev_pad_config
*cfg
,
2827 struct v4l2_subdev_mbus_code_enum
*code
)
2831 if (code
->index
>= ARRAY_SIZE(ov5640_formats
))
2834 code
->code
= ov5640_formats
[code
->index
].code
;
2838 static int ov5640_s_stream(struct v4l2_subdev
*sd
, int enable
)
2840 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
2843 mutex_lock(&sensor
->lock
);
2845 if (sensor
->streaming
== !enable
) {
2846 if (enable
&& sensor
->pending_mode_change
) {
2847 ret
= ov5640_set_mode(sensor
);
2852 if (enable
&& sensor
->pending_fmt_change
) {
2853 ret
= ov5640_set_framefmt(sensor
, &sensor
->fmt
);
2856 sensor
->pending_fmt_change
= false;
2859 if (sensor
->ep
.bus_type
== V4L2_MBUS_CSI2_DPHY
)
2860 ret
= ov5640_set_stream_mipi(sensor
, enable
);
2862 ret
= ov5640_set_stream_dvp(sensor
, enable
);
2865 sensor
->streaming
= enable
;
2868 mutex_unlock(&sensor
->lock
);
2872 static const struct v4l2_subdev_core_ops ov5640_core_ops
= {
2873 .s_power
= ov5640_s_power
,
2874 .log_status
= v4l2_ctrl_subdev_log_status
,
2875 .subscribe_event
= v4l2_ctrl_subdev_subscribe_event
,
2876 .unsubscribe_event
= v4l2_event_subdev_unsubscribe
,
2879 static const struct v4l2_subdev_video_ops ov5640_video_ops
= {
2880 .g_frame_interval
= ov5640_g_frame_interval
,
2881 .s_frame_interval
= ov5640_s_frame_interval
,
2882 .s_stream
= ov5640_s_stream
,
2885 static const struct v4l2_subdev_pad_ops ov5640_pad_ops
= {
2886 .enum_mbus_code
= ov5640_enum_mbus_code
,
2887 .get_fmt
= ov5640_get_fmt
,
2888 .set_fmt
= ov5640_set_fmt
,
2889 .enum_frame_size
= ov5640_enum_frame_size
,
2890 .enum_frame_interval
= ov5640_enum_frame_interval
,
2893 static const struct v4l2_subdev_ops ov5640_subdev_ops
= {
2894 .core
= &ov5640_core_ops
,
2895 .video
= &ov5640_video_ops
,
2896 .pad
= &ov5640_pad_ops
,
2899 static int ov5640_get_regulators(struct ov5640_dev
*sensor
)
2903 for (i
= 0; i
< OV5640_NUM_SUPPLIES
; i
++)
2904 sensor
->supplies
[i
].supply
= ov5640_supply_name
[i
];
2906 return devm_regulator_bulk_get(&sensor
->i2c_client
->dev
,
2907 OV5640_NUM_SUPPLIES
,
2911 static int ov5640_check_chip_id(struct ov5640_dev
*sensor
)
2913 struct i2c_client
*client
= sensor
->i2c_client
;
2917 ret
= ov5640_set_power_on(sensor
);
2921 ret
= ov5640_read_reg16(sensor
, OV5640_REG_CHIP_ID
, &chip_id
);
2923 dev_err(&client
->dev
, "%s: failed to read chip identifier\n",
2928 if (chip_id
!= 0x5640) {
2929 dev_err(&client
->dev
, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
2935 ov5640_set_power_off(sensor
);
2939 static int ov5640_probe(struct i2c_client
*client
,
2940 const struct i2c_device_id
*id
)
2942 struct device
*dev
= &client
->dev
;
2943 struct fwnode_handle
*endpoint
;
2944 struct ov5640_dev
*sensor
;
2945 struct v4l2_mbus_framefmt
*fmt
;
2949 sensor
= devm_kzalloc(dev
, sizeof(*sensor
), GFP_KERNEL
);
2953 sensor
->i2c_client
= client
;
2956 * default init sequence initialize sensor to
2957 * YUV422 UYVY VGA@30fps
2960 fmt
->code
= MEDIA_BUS_FMT_UYVY8_2X8
;
2961 fmt
->colorspace
= V4L2_COLORSPACE_SRGB
;
2962 fmt
->ycbcr_enc
= V4L2_MAP_YCBCR_ENC_DEFAULT(fmt
->colorspace
);
2963 fmt
->quantization
= V4L2_QUANTIZATION_FULL_RANGE
;
2964 fmt
->xfer_func
= V4L2_MAP_XFER_FUNC_DEFAULT(fmt
->colorspace
);
2967 fmt
->field
= V4L2_FIELD_NONE
;
2968 sensor
->frame_interval
.numerator
= 1;
2969 sensor
->frame_interval
.denominator
= ov5640_framerates
[OV5640_30_FPS
];
2970 sensor
->current_fr
= OV5640_30_FPS
;
2971 sensor
->current_mode
=
2972 &ov5640_mode_data
[OV5640_MODE_VGA_640_480
];
2973 sensor
->last_mode
= sensor
->current_mode
;
2975 sensor
->ae_target
= 52;
2977 /* optional indication of physical rotation of sensor */
2978 ret
= fwnode_property_read_u32(dev_fwnode(&client
->dev
), "rotation",
2983 sensor
->upside_down
= true;
2988 dev_warn(dev
, "%u degrees rotation is not supported, ignoring...\n",
2993 endpoint
= fwnode_graph_get_next_endpoint(dev_fwnode(&client
->dev
),
2996 dev_err(dev
, "endpoint node not found\n");
3000 ret
= v4l2_fwnode_endpoint_parse(endpoint
, &sensor
->ep
);
3001 fwnode_handle_put(endpoint
);
3003 dev_err(dev
, "Could not parse endpoint\n");
3007 /* get system clock (xclk) */
3008 sensor
->xclk
= devm_clk_get(dev
, "xclk");
3009 if (IS_ERR(sensor
->xclk
)) {
3010 dev_err(dev
, "failed to get xclk\n");
3011 return PTR_ERR(sensor
->xclk
);
3014 sensor
->xclk_freq
= clk_get_rate(sensor
->xclk
);
3015 if (sensor
->xclk_freq
< OV5640_XCLK_MIN
||
3016 sensor
->xclk_freq
> OV5640_XCLK_MAX
) {
3017 dev_err(dev
, "xclk frequency out of range: %d Hz\n",
3022 /* request optional power down pin */
3023 sensor
->pwdn_gpio
= devm_gpiod_get_optional(dev
, "powerdown",
3025 /* request optional reset pin */
3026 sensor
->reset_gpio
= devm_gpiod_get_optional(dev
, "reset",
3029 v4l2_i2c_subdev_init(&sensor
->sd
, client
, &ov5640_subdev_ops
);
3031 sensor
->sd
.flags
|= V4L2_SUBDEV_FL_HAS_DEVNODE
|
3032 V4L2_SUBDEV_FL_HAS_EVENTS
;
3033 sensor
->pad
.flags
= MEDIA_PAD_FL_SOURCE
;
3034 sensor
->sd
.entity
.function
= MEDIA_ENT_F_CAM_SENSOR
;
3035 ret
= media_entity_pads_init(&sensor
->sd
.entity
, 1, &sensor
->pad
);
3039 ret
= ov5640_get_regulators(sensor
);
3043 mutex_init(&sensor
->lock
);
3045 ret
= ov5640_check_chip_id(sensor
);
3047 goto entity_cleanup
;
3049 ret
= ov5640_init_controls(sensor
);
3051 goto entity_cleanup
;
3053 ret
= v4l2_async_register_subdev(&sensor
->sd
);
3060 v4l2_ctrl_handler_free(&sensor
->ctrls
.handler
);
3062 mutex_destroy(&sensor
->lock
);
3063 media_entity_cleanup(&sensor
->sd
.entity
);
3067 static int ov5640_remove(struct i2c_client
*client
)
3069 struct v4l2_subdev
*sd
= i2c_get_clientdata(client
);
3070 struct ov5640_dev
*sensor
= to_ov5640_dev(sd
);
3072 v4l2_async_unregister_subdev(&sensor
->sd
);
3073 mutex_destroy(&sensor
->lock
);
3074 media_entity_cleanup(&sensor
->sd
.entity
);
3075 v4l2_ctrl_handler_free(&sensor
->ctrls
.handler
);
3080 static const struct i2c_device_id ov5640_id
[] = {
3084 MODULE_DEVICE_TABLE(i2c
, ov5640_id
);
3086 static const struct of_device_id ov5640_dt_ids
[] = {
3087 { .compatible
= "ovti,ov5640" },
3090 MODULE_DEVICE_TABLE(of
, ov5640_dt_ids
);
3092 static struct i2c_driver ov5640_i2c_driver
= {
3095 .of_match_table
= ov5640_dt_ids
,
3097 .id_table
= ov5640_id
,
3098 .probe
= ov5640_probe
,
3099 .remove
= ov5640_remove
,
3102 module_i2c_driver(ov5640_i2c_driver
);
3104 MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
3105 MODULE_LICENSE("GPL");