2 * Driver for RJ54N1CB0C CMOS Image Sensor from Sharp
4 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/delay.h>
12 #include <linux/i2c.h>
13 #include <linux/slab.h>
14 #include <linux/videodev2.h>
16 #include <media/rj54n1cb0c.h>
17 #include <media/soc_camera.h>
18 #include <media/soc_mediabus.h>
19 #include <media/v4l2-subdev.h>
20 #include <media/v4l2-chip-ident.h>
22 #define RJ54N1_DEV_CODE 0x0400
23 #define RJ54N1_DEV_CODE2 0x0401
24 #define RJ54N1_OUT_SEL 0x0403
25 #define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404
26 #define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405
27 #define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406
28 #define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407
29 #define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408
30 #define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409
31 #define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a
32 #define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b
33 #define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c
34 #define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d
35 #define RJ54N1_RESIZE_N 0x040e
36 #define RJ54N1_RESIZE_N_STEP 0x040f
37 #define RJ54N1_RESIZE_STEP 0x0410
38 #define RJ54N1_RESIZE_HOLD_H 0x0411
39 #define RJ54N1_RESIZE_HOLD_L 0x0412
40 #define RJ54N1_H_OBEN_OFS 0x0413
41 #define RJ54N1_V_OBEN_OFS 0x0414
42 #define RJ54N1_RESIZE_CONTROL 0x0415
43 #define RJ54N1_STILL_CONTROL 0x0417
44 #define RJ54N1_INC_USE_SEL_H 0x0425
45 #define RJ54N1_INC_USE_SEL_L 0x0426
46 #define RJ54N1_MIRROR_STILL_MODE 0x0427
47 #define RJ54N1_INIT_START 0x0428
48 #define RJ54N1_SCALE_1_2_LEV 0x0429
49 #define RJ54N1_SCALE_4_LEV 0x042a
50 #define RJ54N1_Y_GAIN 0x04d8
51 #define RJ54N1_APT_GAIN_UP 0x04fa
52 #define RJ54N1_RA_SEL_UL 0x0530
53 #define RJ54N1_BYTE_SWAP 0x0531
54 #define RJ54N1_OUT_SIGPO 0x053b
55 #define RJ54N1_WB_SEL_WEIGHT_I 0x054e
56 #define RJ54N1_BIT8_WB 0x0569
57 #define RJ54N1_HCAPS_WB 0x056a
58 #define RJ54N1_VCAPS_WB 0x056b
59 #define RJ54N1_HCAPE_WB 0x056c
60 #define RJ54N1_VCAPE_WB 0x056d
61 #define RJ54N1_EXPOSURE_CONTROL 0x058c
62 #define RJ54N1_FRAME_LENGTH_S_H 0x0595
63 #define RJ54N1_FRAME_LENGTH_S_L 0x0596
64 #define RJ54N1_FRAME_LENGTH_P_H 0x0597
65 #define RJ54N1_FRAME_LENGTH_P_L 0x0598
66 #define RJ54N1_PEAK_H 0x05b7
67 #define RJ54N1_PEAK_50 0x05b8
68 #define RJ54N1_PEAK_60 0x05b9
69 #define RJ54N1_PEAK_DIFF 0x05ba
70 #define RJ54N1_IOC 0x05ef
71 #define RJ54N1_TG_BYPASS 0x0700
72 #define RJ54N1_PLL_L 0x0701
73 #define RJ54N1_PLL_N 0x0702
74 #define RJ54N1_PLL_EN 0x0704
75 #define RJ54N1_RATIO_TG 0x0706
76 #define RJ54N1_RATIO_T 0x0707
77 #define RJ54N1_RATIO_R 0x0708
78 #define RJ54N1_RAMP_TGCLK_EN 0x0709
79 #define RJ54N1_OCLK_DSP 0x0710
80 #define RJ54N1_RATIO_OP 0x0711
81 #define RJ54N1_RATIO_O 0x0712
82 #define RJ54N1_OCLK_SEL_EN 0x0713
83 #define RJ54N1_CLK_RST 0x0717
84 #define RJ54N1_RESET_STANDBY 0x0718
85 #define RJ54N1_FWFLG 0x07fe
87 #define E_EXCLK (1 << 7)
88 #define SOFT_STDBY (1 << 4)
89 #define SEN_RSTX (1 << 2)
90 #define TG_RSTX (1 << 1)
91 #define DSP_RSTX (1 << 0)
93 #define RESIZE_HOLD_SEL (1 << 2)
94 #define RESIZE_GO (1 << 1)
97 * When cropping, the camera automatically centers the cropped region, there
98 * doesn't seem to be a way to specify an explicit location of the rectangle.
100 #define RJ54N1_COLUMN_SKIP 0
101 #define RJ54N1_ROW_SKIP 0
102 #define RJ54N1_MAX_WIDTH 1600
103 #define RJ54N1_MAX_HEIGHT 1200
108 /* I2C addresses: 0x50, 0x51, 0x60, 0x61 */
110 /* RJ54N1CB0C has only one fixed colorspace per pixelcode */
111 struct rj54n1_datafmt
{
112 enum v4l2_mbus_pixelcode code
;
113 enum v4l2_colorspace colorspace
;
116 /* Find a data format by a pixel code in an array */
117 static const struct rj54n1_datafmt
*rj54n1_find_datafmt(
118 enum v4l2_mbus_pixelcode code
, const struct rj54n1_datafmt
*fmt
,
122 for (i
= 0; i
< n
; i
++)
123 if (fmt
[i
].code
== code
)
129 static const struct rj54n1_datafmt rj54n1_colour_fmts
[] = {
130 {V4L2_MBUS_FMT_YUYV8_2X8
, V4L2_COLORSPACE_JPEG
},
131 {V4L2_MBUS_FMT_YVYU8_2X8
, V4L2_COLORSPACE_JPEG
},
132 {V4L2_MBUS_FMT_RGB565_2X8_LE
, V4L2_COLORSPACE_SRGB
},
133 {V4L2_MBUS_FMT_RGB565_2X8_BE
, V4L2_COLORSPACE_SRGB
},
134 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE
, V4L2_COLORSPACE_SRGB
},
135 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE
, V4L2_COLORSPACE_SRGB
},
136 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE
, V4L2_COLORSPACE_SRGB
},
137 {V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE
, V4L2_COLORSPACE_SRGB
},
138 {V4L2_MBUS_FMT_SBGGR10_1X10
, V4L2_COLORSPACE_SRGB
},
141 struct rj54n1_clock_div
{
142 u8 ratio_tg
; /* can be 0 or an odd number */
150 struct v4l2_subdev subdev
;
151 struct rj54n1_clock_div clk_div
;
152 const struct rj54n1_datafmt
*fmt
;
153 struct v4l2_rect rect
; /* Sensor window */
154 unsigned int tgclk_mhz
;
156 unsigned short width
; /* Output window */
157 unsigned short height
;
158 unsigned short resize
; /* Sensor * 1024 / resize = Output */
159 unsigned short scale
;
163 struct rj54n1_reg_val
{
168 static const struct rj54n1_reg_val bank_4
[] = {
189 static const struct rj54n1_reg_val bank_5
[] = {
210 static const struct rj54n1_reg_val bank_7
[] = {
218 static const struct rj54n1_reg_val bank_8
[] = {
406 static const struct rj54n1_reg_val bank_10
[] = {
410 /* Clock dividers - these are default register values, divider = register + 1 */
411 static const struct rj54n1_clock_div clk_div
= {
412 .ratio_tg
= 3 /* default: 5 */,
413 .ratio_t
= 4 /* default: 1 */,
414 .ratio_r
= 4 /* default: 0 */,
415 .ratio_op
= 1 /* default: 5 */,
416 .ratio_o
= 9 /* default: 0 */,
419 static struct rj54n1
*to_rj54n1(const struct i2c_client
*client
)
421 return container_of(i2c_get_clientdata(client
), struct rj54n1
, subdev
);
424 static int reg_read(struct i2c_client
*client
, const u16 reg
)
426 struct rj54n1
*rj54n1
= to_rj54n1(client
);
430 if (rj54n1
->bank
!= reg
>> 8) {
431 dev_dbg(&client
->dev
, "[0x%x] = 0x%x\n", 0xff, reg
>> 8);
432 ret
= i2c_smbus_write_byte_data(client
, 0xff, reg
>> 8);
435 rj54n1
->bank
= reg
>> 8;
437 return i2c_smbus_read_byte_data(client
, reg
& 0xff);
440 static int reg_write(struct i2c_client
*client
, const u16 reg
,
443 struct rj54n1
*rj54n1
= to_rj54n1(client
);
447 if (rj54n1
->bank
!= reg
>> 8) {
448 dev_dbg(&client
->dev
, "[0x%x] = 0x%x\n", 0xff, reg
>> 8);
449 ret
= i2c_smbus_write_byte_data(client
, 0xff, reg
>> 8);
452 rj54n1
->bank
= reg
>> 8;
454 dev_dbg(&client
->dev
, "[0x%x] = 0x%x\n", reg
& 0xff, data
);
455 return i2c_smbus_write_byte_data(client
, reg
& 0xff, data
);
458 static int reg_set(struct i2c_client
*client
, const u16 reg
,
459 const u8 data
, const u8 mask
)
463 ret
= reg_read(client
, reg
);
466 return reg_write(client
, reg
, (ret
& ~mask
) | (data
& mask
));
469 static int reg_write_multiple(struct i2c_client
*client
,
470 const struct rj54n1_reg_val
*rv
, const int n
)
474 for (i
= 0; i
< n
; i
++) {
475 ret
= reg_write(client
, rv
->reg
, rv
->val
);
484 static int rj54n1_enum_fmt(struct v4l2_subdev
*sd
, unsigned int index
,
485 enum v4l2_mbus_pixelcode
*code
)
487 if (index
>= ARRAY_SIZE(rj54n1_colour_fmts
))
490 *code
= rj54n1_colour_fmts
[index
].code
;
494 static int rj54n1_s_stream(struct v4l2_subdev
*sd
, int enable
)
496 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
498 /* Switch between preview and still shot modes */
499 return reg_set(client
, RJ54N1_STILL_CONTROL
, (!enable
) << 7, 0x80);
502 static int rj54n1_set_rect(struct i2c_client
*client
,
503 u16 reg_x
, u16 reg_y
, u16 reg_xy
,
504 u32 width
, u32 height
)
508 ret
= reg_write(client
, reg_xy
,
509 ((width
>> 4) & 0x70) |
510 ((height
>> 8) & 7));
513 ret
= reg_write(client
, reg_x
, width
& 0xff);
515 ret
= reg_write(client
, reg_y
, height
& 0xff);
521 * Some commands, specifically certain initialisation sequences, require
522 * a commit operation.
524 static int rj54n1_commit(struct i2c_client
*client
)
526 int ret
= reg_write(client
, RJ54N1_INIT_START
, 1);
529 ret
= reg_write(client
, RJ54N1_INIT_START
, 0);
533 static int rj54n1_sensor_scale(struct v4l2_subdev
*sd
, s32
*in_w
, s32
*in_h
,
534 s32
*out_w
, s32
*out_h
);
536 static int rj54n1_s_crop(struct v4l2_subdev
*sd
, struct v4l2_crop
*a
)
538 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
539 struct rj54n1
*rj54n1
= to_rj54n1(client
);
540 struct v4l2_rect
*rect
= &a
->c
;
541 int dummy
= 0, output_w
, output_h
,
542 input_w
= rect
->width
, input_h
= rect
->height
;
545 /* arbitrary minimum width and height, edges unimportant */
546 soc_camera_limit_side(&dummy
, &input_w
,
547 RJ54N1_COLUMN_SKIP
, 8, RJ54N1_MAX_WIDTH
);
549 soc_camera_limit_side(&dummy
, &input_h
,
550 RJ54N1_ROW_SKIP
, 8, RJ54N1_MAX_HEIGHT
);
552 output_w
= (input_w
* 1024 + rj54n1
->resize
/ 2) / rj54n1
->resize
;
553 output_h
= (input_h
* 1024 + rj54n1
->resize
/ 2) / rj54n1
->resize
;
555 dev_dbg(&client
->dev
, "Scaling for %dx%d : %u = %dx%d\n",
556 input_w
, input_h
, rj54n1
->resize
, output_w
, output_h
);
558 ret
= rj54n1_sensor_scale(sd
, &input_w
, &input_h
, &output_w
, &output_h
);
562 rj54n1
->width
= output_w
;
563 rj54n1
->height
= output_h
;
564 rj54n1
->resize
= ret
;
565 rj54n1
->rect
.width
= input_w
;
566 rj54n1
->rect
.height
= input_h
;
571 static int rj54n1_g_crop(struct v4l2_subdev
*sd
, struct v4l2_crop
*a
)
573 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
574 struct rj54n1
*rj54n1
= to_rj54n1(client
);
577 a
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
582 static int rj54n1_cropcap(struct v4l2_subdev
*sd
, struct v4l2_cropcap
*a
)
584 a
->bounds
.left
= RJ54N1_COLUMN_SKIP
;
585 a
->bounds
.top
= RJ54N1_ROW_SKIP
;
586 a
->bounds
.width
= RJ54N1_MAX_WIDTH
;
587 a
->bounds
.height
= RJ54N1_MAX_HEIGHT
;
588 a
->defrect
= a
->bounds
;
589 a
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
590 a
->pixelaspect
.numerator
= 1;
591 a
->pixelaspect
.denominator
= 1;
596 static int rj54n1_g_fmt(struct v4l2_subdev
*sd
,
597 struct v4l2_mbus_framefmt
*mf
)
599 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
600 struct rj54n1
*rj54n1
= to_rj54n1(client
);
602 mf
->code
= rj54n1
->fmt
->code
;
603 mf
->colorspace
= rj54n1
->fmt
->colorspace
;
604 mf
->field
= V4L2_FIELD_NONE
;
605 mf
->width
= rj54n1
->width
;
606 mf
->height
= rj54n1
->height
;
612 * The actual geometry configuration routine. It scales the input window into
613 * the output one, updates the window sizes and returns an error or the resize
614 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera.
616 static int rj54n1_sensor_scale(struct v4l2_subdev
*sd
, s32
*in_w
, s32
*in_h
,
617 s32
*out_w
, s32
*out_h
)
619 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
620 struct rj54n1
*rj54n1
= to_rj54n1(client
);
621 unsigned int skip
, resize
, input_w
= *in_w
, input_h
= *in_h
,
622 output_w
= *out_w
, output_h
= *out_h
;
623 u16 inc_sel
, wb_bit8
, wb_left
, wb_right
, wb_top
, wb_bottom
;
624 unsigned int peak
, peak_50
, peak_60
;
628 * We have a problem with crops, where the window is larger than 512x384
629 * and output window is larger than a half of the input one. In this
630 * case we have to either reduce the input window to equal or below
631 * 512x384 or the output window to equal or below 1/2 of the input.
633 if (output_w
> max(512U, input_w
/ 2)) {
634 if (2 * output_w
> RJ54N1_MAX_WIDTH
) {
635 input_w
= RJ54N1_MAX_WIDTH
;
636 output_w
= RJ54N1_MAX_WIDTH
/ 2;
638 input_w
= output_w
* 2;
641 dev_dbg(&client
->dev
, "Adjusted output width: in %u, out %u\n",
645 if (output_h
> max(384U, input_h
/ 2)) {
646 if (2 * output_h
> RJ54N1_MAX_HEIGHT
) {
647 input_h
= RJ54N1_MAX_HEIGHT
;
648 output_h
= RJ54N1_MAX_HEIGHT
/ 2;
650 input_h
= output_h
* 2;
653 dev_dbg(&client
->dev
, "Adjusted output height: in %u, out %u\n",
657 /* Idea: use the read mode for snapshots, handle separate geometries */
658 ret
= rj54n1_set_rect(client
, RJ54N1_X_OUTPUT_SIZE_S_L
,
659 RJ54N1_Y_OUTPUT_SIZE_S_L
,
660 RJ54N1_XY_OUTPUT_SIZE_S_H
, output_w
, output_h
);
662 ret
= rj54n1_set_rect(client
, RJ54N1_X_OUTPUT_SIZE_P_L
,
663 RJ54N1_Y_OUTPUT_SIZE_P_L
,
664 RJ54N1_XY_OUTPUT_SIZE_P_H
, output_w
, output_h
);
669 if (output_w
> input_w
&& output_h
> input_h
) {
675 unsigned int resize_x
, resize_y
;
676 resize_x
= (input_w
* 1024 + output_w
/ 2) / output_w
;
677 resize_y
= (input_h
* 1024 + output_h
/ 2) / output_h
;
679 /* We want max(resize_x, resize_y), check if it still fits */
680 if (resize_x
> resize_y
&&
681 (output_h
* resize_x
+ 512) / 1024 > RJ54N1_MAX_HEIGHT
)
682 resize
= (RJ54N1_MAX_HEIGHT
* 1024 + output_h
/ 2) /
684 else if (resize_y
> resize_x
&&
685 (output_w
* resize_y
+ 512) / 1024 > RJ54N1_MAX_WIDTH
)
686 resize
= (RJ54N1_MAX_WIDTH
* 1024 + output_w
/ 2) /
689 resize
= max(resize_x
, resize_y
);
691 /* Prohibited value ranges */
702 case 16320 ... 16384:
708 ret
= reg_write(client
, RJ54N1_RESIZE_HOLD_L
, resize
& 0xff);
710 ret
= reg_write(client
, RJ54N1_RESIZE_HOLD_H
, resize
>> 8);
716 * Configure a skipping bitmask. The sensor will select a skipping value
717 * among set bits automatically. This is very unclear in the datasheet
718 * too. I was told, in this register one enables all skipping values,
719 * that are required for a specific resize, and the camera selects
720 * automatically, which ones to use. But it is unclear how to identify,
721 * which cropping values are needed. Secondly, why don't we just set all
722 * bits and let the camera choose? Would it increase processing time and
723 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to
724 * improve the image quality or stability for larger frames (see comment
725 * above), but I didn't check the framerate.
727 skip
= min(resize
/ 1024, 15U);
733 else if (resize
& 1023 && skip
< 15)
734 inc_sel
|= 1 << (skip
+ 1);
736 ret
= reg_write(client
, RJ54N1_INC_USE_SEL_L
, inc_sel
& 0xfc);
738 ret
= reg_write(client
, RJ54N1_INC_USE_SEL_H
, inc_sel
>> 8);
740 if (!rj54n1
->auto_wb
) {
741 /* Auto white balance window */
742 wb_left
= output_w
/ 16;
743 wb_right
= (3 * output_w
/ 4 - 3) / 4;
744 wb_top
= output_h
/ 16;
745 wb_bottom
= (3 * output_h
/ 4 - 3) / 4;
746 wb_bit8
= ((wb_left
>> 2) & 0x40) | ((wb_top
>> 4) & 0x10) |
747 ((wb_right
>> 6) & 4) | ((wb_bottom
>> 8) & 1);
750 ret
= reg_write(client
, RJ54N1_BIT8_WB
, wb_bit8
);
752 ret
= reg_write(client
, RJ54N1_HCAPS_WB
, wb_left
);
754 ret
= reg_write(client
, RJ54N1_VCAPS_WB
, wb_top
);
756 ret
= reg_write(client
, RJ54N1_HCAPE_WB
, wb_right
);
758 ret
= reg_write(client
, RJ54N1_VCAPE_WB
, wb_bottom
);
762 peak
= 12 * RJ54N1_MAX_WIDTH
* (1 << 14) * resize
/ rj54n1
->tgclk_mhz
/
768 ret
= reg_write(client
, RJ54N1_PEAK_H
,
769 ((peak_50
>> 4) & 0xf0) | (peak_60
>> 8));
771 ret
= reg_write(client
, RJ54N1_PEAK_50
, peak_50
);
773 ret
= reg_write(client
, RJ54N1_PEAK_60
, peak_60
);
775 ret
= reg_write(client
, RJ54N1_PEAK_DIFF
, peak
/ 150);
779 ret
= reg_write(client
, RJ54N1_RESIZE_CONTROL
,
780 RESIZE_HOLD_SEL
| RESIZE_GO
| 1);
785 /* Constant taken from manufacturer's example */
788 ret
= reg_write(client
, RJ54N1_RESIZE_CONTROL
, RESIZE_HOLD_SEL
| 1);
792 *in_w
= (output_w
* resize
+ 512) / 1024;
793 *in_h
= (output_h
* resize
+ 512) / 1024;
797 dev_dbg(&client
->dev
, "Scaled for %dx%d : %u = %ux%u, skip %u\n",
798 *in_w
, *in_h
, resize
, output_w
, output_h
, skip
);
803 static int rj54n1_set_clock(struct i2c_client
*client
)
805 struct rj54n1
*rj54n1
= to_rj54n1(client
);
808 /* Enable external clock */
809 ret
= reg_write(client
, RJ54N1_RESET_STANDBY
, E_EXCLK
| SOFT_STDBY
);
810 /* Leave stand-by. Note: use this when implementing suspend / resume */
812 ret
= reg_write(client
, RJ54N1_RESET_STANDBY
, E_EXCLK
);
815 ret
= reg_write(client
, RJ54N1_PLL_L
, PLL_L
);
817 ret
= reg_write(client
, RJ54N1_PLL_N
, PLL_N
);
821 ret
= reg_write(client
, RJ54N1_RATIO_TG
,
822 rj54n1
->clk_div
.ratio_tg
);
824 ret
= reg_write(client
, RJ54N1_RATIO_T
,
825 rj54n1
->clk_div
.ratio_t
);
827 ret
= reg_write(client
, RJ54N1_RATIO_R
,
828 rj54n1
->clk_div
.ratio_r
);
830 /* Enable TGCLK & RAMP */
832 ret
= reg_write(client
, RJ54N1_RAMP_TGCLK_EN
, 3);
834 /* Disable clock output */
836 ret
= reg_write(client
, RJ54N1_OCLK_DSP
, 0);
840 ret
= reg_write(client
, RJ54N1_RATIO_OP
,
841 rj54n1
->clk_div
.ratio_op
);
843 ret
= reg_write(client
, RJ54N1_RATIO_O
,
844 rj54n1
->clk_div
.ratio_o
);
848 ret
= reg_write(client
, RJ54N1_OCLK_SEL_EN
, 1);
850 /* Use PLL for Timing Generator, write 2 to reserved bits */
852 ret
= reg_write(client
, RJ54N1_TG_BYPASS
, 2);
854 /* Take sensor out of reset */
856 ret
= reg_write(client
, RJ54N1_RESET_STANDBY
,
860 ret
= reg_write(client
, RJ54N1_PLL_EN
, 1);
862 /* Wait for PLL to stabilise */
865 /* Enable clock to frequency divider */
867 ret
= reg_write(client
, RJ54N1_CLK_RST
, 1);
870 ret
= reg_read(client
, RJ54N1_CLK_RST
);
872 dev_err(&client
->dev
,
873 "Resetting RJ54N1CB0C clock failed: %d!\n", ret
);
878 ret
= reg_set(client
, RJ54N1_OCLK_DSP
, 1, 1);
882 ret
= reg_write(client
, RJ54N1_OCLK_SEL_EN
, 1);
887 static int rj54n1_reg_init(struct i2c_client
*client
)
889 struct rj54n1
*rj54n1
= to_rj54n1(client
);
890 int ret
= rj54n1_set_clock(client
);
893 ret
= reg_write_multiple(client
, bank_7
, ARRAY_SIZE(bank_7
));
895 ret
= reg_write_multiple(client
, bank_10
, ARRAY_SIZE(bank_10
));
897 /* Set binning divisors */
899 ret
= reg_write(client
, RJ54N1_SCALE_1_2_LEV
, 3 | (7 << 4));
901 ret
= reg_write(client
, RJ54N1_SCALE_4_LEV
, 0xf);
903 /* Switch to fixed resize mode */
905 ret
= reg_write(client
, RJ54N1_RESIZE_CONTROL
,
906 RESIZE_HOLD_SEL
| 1);
910 ret
= reg_write(client
, RJ54N1_Y_GAIN
, 0x84);
913 * Mirror the image back: default is upside down and left-to-right...
914 * Set manual preview / still shot switching
917 ret
= reg_write(client
, RJ54N1_MIRROR_STILL_MODE
, 0x27);
920 ret
= reg_write_multiple(client
, bank_4
, ARRAY_SIZE(bank_4
));
922 /* Auto exposure area */
924 ret
= reg_write(client
, RJ54N1_EXPOSURE_CONTROL
, 0x80);
925 /* Check current auto WB config */
927 ret
= reg_read(client
, RJ54N1_WB_SEL_WEIGHT_I
);
929 rj54n1
->auto_wb
= ret
& 0x80;
930 ret
= reg_write_multiple(client
, bank_5
, ARRAY_SIZE(bank_5
));
933 ret
= reg_write_multiple(client
, bank_8
, ARRAY_SIZE(bank_8
));
936 ret
= reg_write(client
, RJ54N1_RESET_STANDBY
,
937 E_EXCLK
| DSP_RSTX
| SEN_RSTX
);
941 ret
= rj54n1_commit(client
);
943 /* Take DSP, TG, sensor out of reset */
945 ret
= reg_write(client
, RJ54N1_RESET_STANDBY
,
946 E_EXCLK
| DSP_RSTX
| TG_RSTX
| SEN_RSTX
);
948 /* Start register update? Same register as 0x?FE in many bank_* sets */
950 ret
= reg_write(client
, RJ54N1_FWFLG
, 2);
952 /* Constant taken from manufacturer's example */
958 static int rj54n1_try_fmt(struct v4l2_subdev
*sd
,
959 struct v4l2_mbus_framefmt
*mf
)
961 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
962 struct rj54n1
*rj54n1
= to_rj54n1(client
);
963 const struct rj54n1_datafmt
*fmt
;
964 int align
= mf
->code
== V4L2_MBUS_FMT_SBGGR10_1X10
||
965 mf
->code
== V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE
||
966 mf
->code
== V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE
||
967 mf
->code
== V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE
||
968 mf
->code
== V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE
;
970 dev_dbg(&client
->dev
, "%s: code = %d, width = %u, height = %u\n",
971 __func__
, mf
->code
, mf
->width
, mf
->height
);
973 fmt
= rj54n1_find_datafmt(mf
->code
, rj54n1_colour_fmts
,
974 ARRAY_SIZE(rj54n1_colour_fmts
));
977 mf
->code
= fmt
->code
;
980 mf
->field
= V4L2_FIELD_NONE
;
981 mf
->colorspace
= fmt
->colorspace
;
983 v4l_bound_align_image(&mf
->width
, 112, RJ54N1_MAX_WIDTH
, align
,
984 &mf
->height
, 84, RJ54N1_MAX_HEIGHT
, align
, 0);
989 static int rj54n1_s_fmt(struct v4l2_subdev
*sd
,
990 struct v4l2_mbus_framefmt
*mf
)
992 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
993 struct rj54n1
*rj54n1
= to_rj54n1(client
);
994 const struct rj54n1_datafmt
*fmt
;
995 int output_w
, output_h
, max_w
, max_h
,
996 input_w
= rj54n1
->rect
.width
, input_h
= rj54n1
->rect
.height
;
1000 * The host driver can call us without .try_fmt(), so, we have to take
1003 rj54n1_try_fmt(sd
, mf
);
1006 * Verify if the sensor has just been powered on. TODO: replace this
1007 * with proper PM, when a suitable API is available.
1009 ret
= reg_read(client
, RJ54N1_RESET_STANDBY
);
1013 if (!(ret
& E_EXCLK
)) {
1014 ret
= rj54n1_reg_init(client
);
1019 dev_dbg(&client
->dev
, "%s: code = %d, width = %u, height = %u\n",
1020 __func__
, mf
->code
, mf
->width
, mf
->height
);
1022 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */
1024 case V4L2_MBUS_FMT_YUYV8_2X8
:
1025 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 0);
1027 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 8, 8);
1029 case V4L2_MBUS_FMT_YVYU8_2X8
:
1030 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 0);
1032 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 0, 8);
1034 case V4L2_MBUS_FMT_RGB565_2X8_LE
:
1035 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 0x11);
1037 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 8, 8);
1039 case V4L2_MBUS_FMT_RGB565_2X8_BE
:
1040 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 0x11);
1042 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 0, 8);
1044 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE
:
1045 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 4);
1047 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 8, 8);
1049 ret
= reg_write(client
, RJ54N1_RA_SEL_UL
, 0);
1051 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE
:
1052 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 4);
1054 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 8, 8);
1056 ret
= reg_write(client
, RJ54N1_RA_SEL_UL
, 8);
1058 case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE
:
1059 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 4);
1061 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 0, 8);
1063 ret
= reg_write(client
, RJ54N1_RA_SEL_UL
, 0);
1065 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE
:
1066 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 4);
1068 ret
= reg_set(client
, RJ54N1_BYTE_SWAP
, 0, 8);
1070 ret
= reg_write(client
, RJ54N1_RA_SEL_UL
, 8);
1072 case V4L2_MBUS_FMT_SBGGR10_1X10
:
1073 ret
= reg_write(client
, RJ54N1_OUT_SEL
, 5);
1079 /* Special case: a raw mode with 10 bits of data per clock tick */
1081 ret
= reg_set(client
, RJ54N1_OCLK_SEL_EN
,
1082 (mf
->code
== V4L2_MBUS_FMT_SBGGR10_1X10
) << 1, 2);
1087 /* Supported scales 1:1 >= scale > 1:16 */
1088 max_w
= mf
->width
* (16 * 1024 - 1) / 1024;
1089 if (input_w
> max_w
)
1091 max_h
= mf
->height
* (16 * 1024 - 1) / 1024;
1092 if (input_h
> max_h
)
1095 output_w
= mf
->width
;
1096 output_h
= mf
->height
;
1098 ret
= rj54n1_sensor_scale(sd
, &input_w
, &input_h
, &output_w
, &output_h
);
1102 fmt
= rj54n1_find_datafmt(mf
->code
, rj54n1_colour_fmts
,
1103 ARRAY_SIZE(rj54n1_colour_fmts
));
1106 rj54n1
->resize
= ret
;
1107 rj54n1
->rect
.width
= input_w
;
1108 rj54n1
->rect
.height
= input_h
;
1109 rj54n1
->width
= output_w
;
1110 rj54n1
->height
= output_h
;
1112 mf
->width
= output_w
;
1113 mf
->height
= output_h
;
1114 mf
->field
= V4L2_FIELD_NONE
;
1115 mf
->colorspace
= fmt
->colorspace
;
1120 static int rj54n1_g_chip_ident(struct v4l2_subdev
*sd
,
1121 struct v4l2_dbg_chip_ident
*id
)
1123 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1125 if (id
->match
.type
!= V4L2_CHIP_MATCH_I2C_ADDR
)
1128 if (id
->match
.addr
!= client
->addr
)
1131 id
->ident
= V4L2_IDENT_RJ54N1CB0C
;
1137 #ifdef CONFIG_VIDEO_ADV_DEBUG
1138 static int rj54n1_g_register(struct v4l2_subdev
*sd
,
1139 struct v4l2_dbg_register
*reg
)
1141 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1143 if (reg
->match
.type
!= V4L2_CHIP_MATCH_I2C_ADDR
||
1144 reg
->reg
< 0x400 || reg
->reg
> 0x1fff)
1145 /* Registers > 0x0800 are only available from Sharp support */
1148 if (reg
->match
.addr
!= client
->addr
)
1152 reg
->val
= reg_read(client
, reg
->reg
);
1154 if (reg
->val
> 0xff)
1160 static int rj54n1_s_register(struct v4l2_subdev
*sd
,
1161 struct v4l2_dbg_register
*reg
)
1163 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1165 if (reg
->match
.type
!= V4L2_CHIP_MATCH_I2C_ADDR
||
1166 reg
->reg
< 0x400 || reg
->reg
> 0x1fff)
1167 /* Registers >= 0x0800 are only available from Sharp support */
1170 if (reg
->match
.addr
!= client
->addr
)
1173 if (reg_write(client
, reg
->reg
, reg
->val
) < 0)
1180 static const struct v4l2_queryctrl rj54n1_controls
[] = {
1182 .id
= V4L2_CID_VFLIP
,
1183 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
1184 .name
= "Flip Vertically",
1190 .id
= V4L2_CID_HFLIP
,
1191 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
1192 .name
= "Flip Horizontally",
1198 .id
= V4L2_CID_GAIN
,
1199 .type
= V4L2_CTRL_TYPE_INTEGER
,
1204 .default_value
= 66,
1205 .flags
= V4L2_CTRL_FLAG_SLIDER
,
1207 .id
= V4L2_CID_AUTO_WHITE_BALANCE
,
1208 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
1209 .name
= "Auto white balance",
1217 static struct soc_camera_ops rj54n1_ops
= {
1218 .controls
= rj54n1_controls
,
1219 .num_controls
= ARRAY_SIZE(rj54n1_controls
),
1222 static int rj54n1_g_ctrl(struct v4l2_subdev
*sd
, struct v4l2_control
*ctrl
)
1224 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1225 struct rj54n1
*rj54n1
= to_rj54n1(client
);
1229 case V4L2_CID_VFLIP
:
1230 data
= reg_read(client
, RJ54N1_MIRROR_STILL_MODE
);
1233 ctrl
->value
= !(data
& 1);
1235 case V4L2_CID_HFLIP
:
1236 data
= reg_read(client
, RJ54N1_MIRROR_STILL_MODE
);
1239 ctrl
->value
= !(data
& 2);
1242 data
= reg_read(client
, RJ54N1_Y_GAIN
);
1246 ctrl
->value
= data
/ 2;
1248 case V4L2_CID_AUTO_WHITE_BALANCE
:
1249 ctrl
->value
= rj54n1
->auto_wb
;
1256 static int rj54n1_s_ctrl(struct v4l2_subdev
*sd
, struct v4l2_control
*ctrl
)
1259 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1260 struct rj54n1
*rj54n1
= to_rj54n1(client
);
1261 const struct v4l2_queryctrl
*qctrl
;
1263 qctrl
= soc_camera_find_qctrl(&rj54n1_ops
, ctrl
->id
);
1268 case V4L2_CID_VFLIP
:
1270 data
= reg_set(client
, RJ54N1_MIRROR_STILL_MODE
, 0, 1);
1272 data
= reg_set(client
, RJ54N1_MIRROR_STILL_MODE
, 1, 1);
1276 case V4L2_CID_HFLIP
:
1278 data
= reg_set(client
, RJ54N1_MIRROR_STILL_MODE
, 0, 2);
1280 data
= reg_set(client
, RJ54N1_MIRROR_STILL_MODE
, 2, 2);
1285 if (ctrl
->value
> qctrl
->maximum
||
1286 ctrl
->value
< qctrl
->minimum
)
1288 else if (reg_write(client
, RJ54N1_Y_GAIN
, ctrl
->value
* 2) < 0)
1291 case V4L2_CID_AUTO_WHITE_BALANCE
:
1292 /* Auto WB area - whole image */
1293 if (reg_set(client
, RJ54N1_WB_SEL_WEIGHT_I
, ctrl
->value
<< 7,
1296 rj54n1
->auto_wb
= ctrl
->value
;
1303 static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops
= {
1304 .g_ctrl
= rj54n1_g_ctrl
,
1305 .s_ctrl
= rj54n1_s_ctrl
,
1306 .g_chip_ident
= rj54n1_g_chip_ident
,
1307 #ifdef CONFIG_VIDEO_ADV_DEBUG
1308 .g_register
= rj54n1_g_register
,
1309 .s_register
= rj54n1_s_register
,
1313 static int rj54n1_g_mbus_config(struct v4l2_subdev
*sd
,
1314 struct v4l2_mbus_config
*cfg
)
1316 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1317 struct soc_camera_device
*icd
= client
->dev
.platform_data
;
1318 struct soc_camera_link
*icl
= to_soc_camera_link(icd
);
1321 V4L2_MBUS_PCLK_SAMPLE_RISING
| V4L2_MBUS_PCLK_SAMPLE_FALLING
|
1322 V4L2_MBUS_MASTER
| V4L2_MBUS_DATA_ACTIVE_HIGH
|
1323 V4L2_MBUS_HSYNC_ACTIVE_HIGH
| V4L2_MBUS_VSYNC_ACTIVE_HIGH
;
1324 cfg
->type
= V4L2_MBUS_PARALLEL
;
1325 cfg
->flags
= soc_camera_apply_board_flags(icl
, cfg
);
1330 static int rj54n1_s_mbus_config(struct v4l2_subdev
*sd
,
1331 const struct v4l2_mbus_config
*cfg
)
1333 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1334 struct soc_camera_device
*icd
= client
->dev
.platform_data
;
1335 struct soc_camera_link
*icl
= to_soc_camera_link(icd
);
1337 /* Figures 2.5-1 to 2.5-3 - default falling pixclk edge */
1338 if (soc_camera_apply_board_flags(icl
, cfg
) &
1339 V4L2_MBUS_PCLK_SAMPLE_RISING
)
1340 return reg_write(client
, RJ54N1_OUT_SIGPO
, 1 << 4);
1342 return reg_write(client
, RJ54N1_OUT_SIGPO
, 0);
1345 static struct v4l2_subdev_video_ops rj54n1_subdev_video_ops
= {
1346 .s_stream
= rj54n1_s_stream
,
1347 .s_mbus_fmt
= rj54n1_s_fmt
,
1348 .g_mbus_fmt
= rj54n1_g_fmt
,
1349 .try_mbus_fmt
= rj54n1_try_fmt
,
1350 .enum_mbus_fmt
= rj54n1_enum_fmt
,
1351 .g_crop
= rj54n1_g_crop
,
1352 .s_crop
= rj54n1_s_crop
,
1353 .cropcap
= rj54n1_cropcap
,
1354 .g_mbus_config
= rj54n1_g_mbus_config
,
1355 .s_mbus_config
= rj54n1_s_mbus_config
,
1358 static struct v4l2_subdev_ops rj54n1_subdev_ops
= {
1359 .core
= &rj54n1_subdev_core_ops
,
1360 .video
= &rj54n1_subdev_video_ops
,
1364 * Interface active, can use i2c. If it fails, it can indeed mean, that
1365 * this wasn't our capture interface, so, we wait for the right one
1367 static int rj54n1_video_probe(struct soc_camera_device
*icd
,
1368 struct i2c_client
*client
,
1369 struct rj54n1_pdata
*priv
)
1374 /* We must have a parent by now. And it cannot be a wrong one. */
1375 BUG_ON(!icd
->parent
||
1376 to_soc_camera_host(icd
->parent
)->nr
!= icd
->iface
);
1378 /* Read out the chip version register */
1379 data1
= reg_read(client
, RJ54N1_DEV_CODE
);
1380 data2
= reg_read(client
, RJ54N1_DEV_CODE2
);
1382 if (data1
!= 0x51 || data2
!= 0x10) {
1384 dev_info(&client
->dev
, "No RJ54N1CB0C found, read 0x%x:0x%x\n",
1389 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */
1390 ret
= reg_write(client
, RJ54N1_IOC
, priv
->ioctl_high
<< 7);
1394 dev_info(&client
->dev
, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",
1401 static int rj54n1_probe(struct i2c_client
*client
,
1402 const struct i2c_device_id
*did
)
1404 struct rj54n1
*rj54n1
;
1405 struct soc_camera_device
*icd
= client
->dev
.platform_data
;
1406 struct i2c_adapter
*adapter
= to_i2c_adapter(client
->dev
.parent
);
1407 struct soc_camera_link
*icl
;
1408 struct rj54n1_pdata
*rj54n1_priv
;
1412 dev_err(&client
->dev
, "RJ54N1CB0C: missing soc-camera data!\n");
1416 icl
= to_soc_camera_link(icd
);
1417 if (!icl
|| !icl
->priv
) {
1418 dev_err(&client
->dev
, "RJ54N1CB0C: missing platform data!\n");
1422 rj54n1_priv
= icl
->priv
;
1424 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
)) {
1425 dev_warn(&adapter
->dev
,
1426 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
1430 rj54n1
= kzalloc(sizeof(struct rj54n1
), GFP_KERNEL
);
1434 v4l2_i2c_subdev_init(&rj54n1
->subdev
, client
, &rj54n1_subdev_ops
);
1436 icd
->ops
= &rj54n1_ops
;
1438 rj54n1
->clk_div
= clk_div
;
1439 rj54n1
->rect
.left
= RJ54N1_COLUMN_SKIP
;
1440 rj54n1
->rect
.top
= RJ54N1_ROW_SKIP
;
1441 rj54n1
->rect
.width
= RJ54N1_MAX_WIDTH
;
1442 rj54n1
->rect
.height
= RJ54N1_MAX_HEIGHT
;
1443 rj54n1
->width
= RJ54N1_MAX_WIDTH
;
1444 rj54n1
->height
= RJ54N1_MAX_HEIGHT
;
1445 rj54n1
->fmt
= &rj54n1_colour_fmts
[0];
1446 rj54n1
->resize
= 1024;
1447 rj54n1
->tgclk_mhz
= (rj54n1_priv
->mclk_freq
/ PLL_L
* PLL_N
) /
1448 (clk_div
.ratio_tg
+ 1) / (clk_div
.ratio_t
+ 1);
1450 ret
= rj54n1_video_probe(icd
, client
, rj54n1_priv
);
1460 static int rj54n1_remove(struct i2c_client
*client
)
1462 struct rj54n1
*rj54n1
= to_rj54n1(client
);
1463 struct soc_camera_device
*icd
= client
->dev
.platform_data
;
1464 struct soc_camera_link
*icl
= to_soc_camera_link(icd
);
1474 static const struct i2c_device_id rj54n1_id
[] = {
1475 { "rj54n1cb0c", 0 },
1478 MODULE_DEVICE_TABLE(i2c
, rj54n1_id
);
1480 static struct i2c_driver rj54n1_i2c_driver
= {
1482 .name
= "rj54n1cb0c",
1484 .probe
= rj54n1_probe
,
1485 .remove
= rj54n1_remove
,
1486 .id_table
= rj54n1_id
,
1489 static int __init
rj54n1_mod_init(void)
1491 return i2c_add_driver(&rj54n1_i2c_driver
);
1494 static void __exit
rj54n1_mod_exit(void)
1496 i2c_del_driver(&rj54n1_i2c_driver
);
1499 module_init(rj54n1_mod_init
);
1500 module_exit(rj54n1_mod_exit
);
1502 MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");
1503 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1504 MODULE_LICENSE("GPL v2");