![Bhumika Goyal](/assets/img/avatar_default.png)
v4l2_subdev_{core/pad/video}_ops structures are stored in the fields of the v4l2_subdev_ops structure which are of type const. Also, v4l2_subdev_ops structure is passed to a function having its argument of type const. As these structures are never modified, so declare them as const. Done using Coccinelle: (One of the scripts used) @r1 disable optional_qualifier @ identifier i; position p; @@ static struct v4l2_subdev_video_ops i@p = {...}; @ok1@ identifier r1.i; position p; struct v4l2_subdev_ops obj; @@ obj.video=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct v4l2_subdev_video_ops i; File sizes before: text data bss dec hex filename 7810 736 16 8562 2172 drivers/media/i2c/mt9p031.o 9652 736 24 10412 28ac drivers/media/i2c/mt9v032.o 4613 552 20 5185 1441 drivers/media/i2c/noon010pc30.o 2615 552 8 3175 c67 drivers/media/i2c/s5k6a3.o File sizes after: text data bss dec hex filename 8322 232 16 8570 217a drivers/media/i2c/mt9p031.o 10164 232 24 10420 28b4 drivers/media/i2c/mt9v032.o 4933 232 20 5185 1441 drivers/media/i2c/noon010pc30.o 2935 232 8 3175 c67 drivers/media/i2c/s5k6a3.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
830 lines
20 KiB
C
830 lines
20 KiB
C
/*
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* Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
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*
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* Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
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* Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
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*
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* Initial register configuration based on a driver authored by
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* HeungJun Kim <riverful.kim@samsung.com>.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/regulator/consumer.h>
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#include <media/i2c/noon010pc30.h>
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#include <linux/videodev2.h>
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#include <linux/module.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-mediabus.h>
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#include <media/v4l2-subdev.h>
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable.");
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#define MODULE_NAME "NOON010PC30"
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/*
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* Register offsets within a page
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* b15..b8 - page id, b7..b0 - register address
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*/
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#define POWER_CTRL_REG 0x0001
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#define PAGEMODE_REG 0x03
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#define DEVICE_ID_REG 0x0004
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#define NOON010PC30_ID 0x86
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#define VDO_CTL_REG(n) (0x0010 + (n))
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#define SYNC_CTL_REG 0x0012
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/* Window size and position */
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#define WIN_ROWH_REG 0x0013
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#define WIN_ROWL_REG 0x0014
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#define WIN_COLH_REG 0x0015
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#define WIN_COLL_REG 0x0016
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#define WIN_HEIGHTH_REG 0x0017
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#define WIN_HEIGHTL_REG 0x0018
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#define WIN_WIDTHH_REG 0x0019
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#define WIN_WIDTHL_REG 0x001A
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#define HBLANKH_REG 0x001B
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#define HBLANKL_REG 0x001C
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#define VSYNCH_REG 0x001D
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#define VSYNCL_REG 0x001E
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/* VSYNC control */
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#define VS_CTL_REG(n) (0x00A1 + (n))
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/* page 1 */
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#define ISP_CTL_REG(n) (0x0110 + (n))
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#define YOFS_REG 0x0119
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#define DARK_YOFS_REG 0x011A
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#define SAT_CTL_REG 0x0120
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#define BSAT_REG 0x0121
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#define RSAT_REG 0x0122
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/* Color correction */
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#define CMC_CTL_REG 0x0130
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#define CMC_OFSGH_REG 0x0133
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#define CMC_OFSGL_REG 0x0135
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#define CMC_SIGN_REG 0x0136
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#define CMC_GOFS_REG 0x0137
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#define CMC_COEF_REG(n) (0x0138 + (n))
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#define CMC_OFS_REG(n) (0x0141 + (n))
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/* Gamma correction */
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#define GMA_CTL_REG 0x0160
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#define GMA_COEF_REG(n) (0x0161 + (n))
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/* Lens Shading */
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#define LENS_CTRL_REG 0x01D0
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#define LENS_XCEN_REG 0x01D1
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#define LENS_YCEN_REG 0x01D2
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#define LENS_RC_REG 0x01D3
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#define LENS_GC_REG 0x01D4
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#define LENS_BC_REG 0x01D5
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#define L_AGON_REG 0x01D6
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#define L_AGOFF_REG 0x01D7
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/* Page 3 - Auto Exposure */
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#define AE_CTL_REG(n) (0x0310 + (n))
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#define AE_CTL9_REG 0x032C
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#define AE_CTL10_REG 0x032D
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#define AE_YLVL_REG 0x031C
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#define AE_YTH_REG(n) (0x031D + (n))
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#define AE_WGT_REG 0x0326
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#define EXP_TIMEH_REG 0x0333
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#define EXP_TIMEM_REG 0x0334
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#define EXP_TIMEL_REG 0x0335
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#define EXP_MMINH_REG 0x0336
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#define EXP_MMINL_REG 0x0337
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#define EXP_MMAXH_REG 0x0338
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#define EXP_MMAXM_REG 0x0339
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#define EXP_MMAXL_REG 0x033A
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/* Page 4 - Auto White Balance */
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#define AWB_CTL_REG(n) (0x0410 + (n))
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#define AWB_ENABE 0x80
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#define AWB_WGHT_REG 0x0419
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#define BGAIN_PAR_REG(n) (0x044F + (n))
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/* Manual white balance, when AWB_CTL2[0]=1 */
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#define MWB_RGAIN_REG 0x0466
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#define MWB_BGAIN_REG 0x0467
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/* The token to mark an array end */
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#define REG_TERM 0xFFFF
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struct noon010_format {
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u32 code;
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enum v4l2_colorspace colorspace;
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u16 ispctl1_reg;
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};
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struct noon010_frmsize {
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u16 width;
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u16 height;
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int vid_ctl1;
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};
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static const char * const noon010_supply_name[] = {
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"vdd_core", "vddio", "vdda"
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};
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#define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
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struct noon010_info {
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struct v4l2_subdev sd;
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struct media_pad pad;
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struct v4l2_ctrl_handler hdl;
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struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
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u32 gpio_nreset;
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u32 gpio_nstby;
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/* Protects the struct members below */
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struct mutex lock;
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const struct noon010_format *curr_fmt;
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const struct noon010_frmsize *curr_win;
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unsigned int apply_new_cfg:1;
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unsigned int streaming:1;
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unsigned int hflip:1;
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unsigned int vflip:1;
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unsigned int power:1;
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u8 i2c_reg_page;
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};
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struct i2c_regval {
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u16 addr;
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u16 val;
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};
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/* Supported resolutions. */
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static const struct noon010_frmsize noon010_sizes[] = {
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{
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.width = 352,
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.height = 288,
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.vid_ctl1 = 0,
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}, {
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.width = 176,
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.height = 144,
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.vid_ctl1 = 0x10,
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}, {
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.width = 88,
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.height = 72,
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.vid_ctl1 = 0x20,
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},
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};
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/* Supported pixel formats. */
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static const struct noon010_format noon010_formats[] = {
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{
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.code = MEDIA_BUS_FMT_YUYV8_2X8,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.ispctl1_reg = 0x03,
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}, {
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.code = MEDIA_BUS_FMT_YVYU8_2X8,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.ispctl1_reg = 0x02,
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}, {
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.code = MEDIA_BUS_FMT_VYUY8_2X8,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.ispctl1_reg = 0,
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}, {
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.code = MEDIA_BUS_FMT_UYVY8_2X8,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.ispctl1_reg = 0x01,
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}, {
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.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.ispctl1_reg = 0x40,
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},
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};
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static const struct i2c_regval noon010_base_regs[] = {
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{ WIN_COLL_REG, 0x06 }, { HBLANKL_REG, 0x7C },
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/* Color corection and saturation */
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{ ISP_CTL_REG(0), 0x30 }, { ISP_CTL_REG(2), 0x30 },
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{ YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 },
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{ SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
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{ CMC_CTL_REG, 0x0F }, { CMC_OFSGH_REG, 0x3C },
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{ CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x3F },
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{ CMC_COEF_REG(0), 0x79 }, { CMC_OFS_REG(0), 0x00 },
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{ CMC_COEF_REG(1), 0x39 }, { CMC_OFS_REG(1), 0x00 },
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{ CMC_COEF_REG(2), 0x00 }, { CMC_OFS_REG(2), 0x00 },
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{ CMC_COEF_REG(3), 0x11 }, { CMC_OFS_REG(3), 0x8B },
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{ CMC_COEF_REG(4), 0x65 }, { CMC_OFS_REG(4), 0x07 },
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{ CMC_COEF_REG(5), 0x14 }, { CMC_OFS_REG(5), 0x04 },
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{ CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x9C },
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{ CMC_COEF_REG(7), 0x33 }, { CMC_OFS_REG(7), 0x89 },
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{ CMC_COEF_REG(8), 0x74 }, { CMC_OFS_REG(8), 0x25 },
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/* Automatic white balance */
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{ AWB_CTL_REG(0), 0x78 }, { AWB_CTL_REG(1), 0x2E },
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{ AWB_CTL_REG(2), 0x20 }, { AWB_CTL_REG(3), 0x85 },
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/* Auto exposure */
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{ AE_CTL_REG(0), 0xDC }, { AE_CTL_REG(1), 0x81 },
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{ AE_CTL_REG(2), 0x30 }, { AE_CTL_REG(3), 0xA5 },
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{ AE_CTL_REG(4), 0x40 }, { AE_CTL_REG(5), 0x51 },
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{ AE_CTL_REG(6), 0x33 }, { AE_CTL_REG(7), 0x7E },
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{ AE_CTL9_REG, 0x00 }, { AE_CTL10_REG, 0x02 },
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{ AE_YLVL_REG, 0x44 }, { AE_YTH_REG(0), 0x34 },
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{ AE_YTH_REG(1), 0x30 }, { AE_WGT_REG, 0xD5 },
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/* Lens shading compensation */
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{ LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
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{ LENS_YCEN_REG, 0x70 }, { LENS_RC_REG, 0x53 },
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{ LENS_GC_REG, 0x40 }, { LENS_BC_REG, 0x3E },
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{ REG_TERM, 0 },
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};
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static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct noon010_info, sd);
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}
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static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
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{
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return &container_of(ctrl->handler, struct noon010_info, hdl)->sd;
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}
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static inline int set_i2c_page(struct noon010_info *info,
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struct i2c_client *client, unsigned int reg)
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{
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u32 page = reg >> 8 & 0xFF;
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int ret = 0;
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if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
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ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
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if (!ret)
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info->i2c_reg_page = page;
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}
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return ret;
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}
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static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct noon010_info *info = to_noon010(sd);
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int ret = set_i2c_page(info, client, reg_addr);
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if (ret)
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return ret;
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return i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
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}
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static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct noon010_info *info = to_noon010(sd);
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int ret = set_i2c_page(info, client, reg_addr);
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if (ret)
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return ret;
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return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val);
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}
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static inline int noon010_bulk_write_reg(struct v4l2_subdev *sd,
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const struct i2c_regval *msg)
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{
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while (msg->addr != REG_TERM) {
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int ret = cam_i2c_write(sd, msg->addr, msg->val);
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if (ret)
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return ret;
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msg++;
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}
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return 0;
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}
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/* Device reset and sleep mode control */
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static int noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep)
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{
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struct noon010_info *info = to_noon010(sd);
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u8 reg = sleep ? 0xF1 : 0xF0;
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int ret = 0;
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if (reset) {
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ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
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udelay(20);
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}
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if (!ret) {
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ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
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if (reset && !ret)
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info->i2c_reg_page = -1;
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}
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return ret;
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}
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/* Automatic white balance control */
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static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
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{
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int ret;
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ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F);
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if (!ret)
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ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B);
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return ret;
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}
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/* Called with struct noon010_info.lock mutex held */
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static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
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{
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struct noon010_info *info = to_noon010(sd);
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int reg, ret;
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reg = cam_i2c_read(sd, VDO_CTL_REG(1));
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if (reg < 0)
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return reg;
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reg &= 0x7C;
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if (hflip)
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reg |= 0x01;
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if (vflip)
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reg |= 0x02;
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ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80);
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if (!ret) {
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info->hflip = hflip;
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info->vflip = vflip;
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}
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return ret;
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}
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/* Configure resolution and color format */
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static int noon010_set_params(struct v4l2_subdev *sd)
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{
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struct noon010_info *info = to_noon010(sd);
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int ret = cam_i2c_write(sd, VDO_CTL_REG(0),
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info->curr_win->vid_ctl1);
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if (ret)
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return ret;
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return cam_i2c_write(sd, ISP_CTL_REG(0),
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info->curr_fmt->ispctl1_reg);
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}
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/* Find nearest matching image pixel size. */
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static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf,
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const struct noon010_frmsize **size)
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{
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unsigned int min_err = ~0;
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int i = ARRAY_SIZE(noon010_sizes);
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const struct noon010_frmsize *fsize = &noon010_sizes[0],
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*match = NULL;
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while (i--) {
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int err = abs(fsize->width - mf->width)
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+ abs(fsize->height - mf->height);
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if (err < min_err) {
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min_err = err;
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match = fsize;
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}
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fsize++;
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}
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if (match) {
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mf->width = match->width;
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mf->height = match->height;
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if (size)
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*size = match;
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return 0;
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}
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return -EINVAL;
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}
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/* Called with info.lock mutex held */
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static int power_enable(struct noon010_info *info)
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{
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int ret;
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if (info->power) {
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v4l2_info(&info->sd, "%s: sensor is already on\n", __func__);
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return 0;
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}
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if (gpio_is_valid(info->gpio_nstby))
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gpio_set_value(info->gpio_nstby, 0);
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if (gpio_is_valid(info->gpio_nreset))
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gpio_set_value(info->gpio_nreset, 0);
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ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
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if (ret)
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return ret;
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if (gpio_is_valid(info->gpio_nreset)) {
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msleep(50);
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gpio_set_value(info->gpio_nreset, 1);
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}
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if (gpio_is_valid(info->gpio_nstby)) {
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udelay(1000);
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gpio_set_value(info->gpio_nstby, 1);
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}
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if (gpio_is_valid(info->gpio_nreset)) {
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udelay(1000);
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gpio_set_value(info->gpio_nreset, 0);
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msleep(100);
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gpio_set_value(info->gpio_nreset, 1);
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msleep(20);
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}
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info->power = 1;
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v4l2_dbg(1, debug, &info->sd, "%s: sensor is on\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/* Called with info.lock mutex held */
|
|
static int power_disable(struct noon010_info *info)
|
|
{
|
|
int ret;
|
|
|
|
if (!info->power) {
|
|
v4l2_info(&info->sd, "%s: sensor is already off\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (gpio_is_valid(info->gpio_nstby))
|
|
gpio_set_value(info->gpio_nstby, 0);
|
|
|
|
if (gpio_is_valid(info->gpio_nreset))
|
|
gpio_set_value(info->gpio_nreset, 0);
|
|
|
|
info->power = 0;
|
|
|
|
v4l2_dbg(1, debug, &info->sd, "%s: sensor is off\n", __func__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_subdev *sd = to_sd(ctrl);
|
|
struct noon010_info *info = to_noon010(sd);
|
|
int ret = 0;
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
|
|
__func__, ctrl->id, ctrl->val);
|
|
|
|
mutex_lock(&info->lock);
|
|
/*
|
|
* If the device is not powered up by the host driver do
|
|
* not apply any controls to H/W at this time. Instead
|
|
* the controls will be restored right after power-up.
|
|
*/
|
|
if (!info->power)
|
|
goto unlock;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
ret = noon010_enable_autowhitebalance(sd, ctrl->val);
|
|
break;
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
ret = cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
|
|
break;
|
|
case V4L2_CID_RED_BALANCE:
|
|
ret = cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
unlock:
|
|
mutex_unlock(&info->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int noon010_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->index >= ARRAY_SIZE(noon010_formats))
|
|
return -EINVAL;
|
|
|
|
code->code = noon010_formats[code->index].code;
|
|
return 0;
|
|
}
|
|
|
|
static int noon010_get_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct noon010_info *info = to_noon010(sd);
|
|
struct v4l2_mbus_framefmt *mf;
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
if (cfg) {
|
|
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
|
|
fmt->format = *mf;
|
|
}
|
|
return 0;
|
|
}
|
|
mf = &fmt->format;
|
|
|
|
mutex_lock(&info->lock);
|
|
mf->width = info->curr_win->width;
|
|
mf->height = info->curr_win->height;
|
|
mf->code = info->curr_fmt->code;
|
|
mf->colorspace = info->curr_fmt->colorspace;
|
|
mf->field = V4L2_FIELD_NONE;
|
|
|
|
mutex_unlock(&info->lock);
|
|
return 0;
|
|
}
|
|
|
|
/* Return nearest media bus frame format. */
|
|
static const struct noon010_format *noon010_try_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_framefmt *mf)
|
|
{
|
|
int i = ARRAY_SIZE(noon010_formats);
|
|
|
|
while (--i)
|
|
if (mf->code == noon010_formats[i].code)
|
|
break;
|
|
mf->code = noon010_formats[i].code;
|
|
|
|
return &noon010_formats[i];
|
|
}
|
|
|
|
static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct noon010_info *info = to_noon010(sd);
|
|
const struct noon010_frmsize *size = NULL;
|
|
const struct noon010_format *nf;
|
|
struct v4l2_mbus_framefmt *mf;
|
|
int ret = 0;
|
|
|
|
nf = noon010_try_fmt(sd, &fmt->format);
|
|
noon010_try_frame_size(&fmt->format, &size);
|
|
fmt->format.colorspace = V4L2_COLORSPACE_JPEG;
|
|
fmt->format.field = V4L2_FIELD_NONE;
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
if (cfg) {
|
|
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
|
|
*mf = fmt->format;
|
|
}
|
|
return 0;
|
|
}
|
|
mutex_lock(&info->lock);
|
|
if (!info->streaming) {
|
|
info->apply_new_cfg = 1;
|
|
info->curr_fmt = nf;
|
|
info->curr_win = size;
|
|
} else {
|
|
ret = -EBUSY;
|
|
}
|
|
mutex_unlock(&info->lock);
|
|
return ret;
|
|
}
|
|
|
|
/* Called with struct noon010_info.lock mutex held */
|
|
static int noon010_base_config(struct v4l2_subdev *sd)
|
|
{
|
|
int ret = noon010_bulk_write_reg(sd, noon010_base_regs);
|
|
if (!ret)
|
|
ret = noon010_set_params(sd);
|
|
if (!ret)
|
|
ret = noon010_set_flip(sd, 1, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int noon010_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct noon010_info *info = to_noon010(sd);
|
|
int ret;
|
|
|
|
mutex_lock(&info->lock);
|
|
if (on) {
|
|
ret = power_enable(info);
|
|
if (!ret)
|
|
ret = noon010_base_config(sd);
|
|
} else {
|
|
noon010_power_ctrl(sd, false, true);
|
|
ret = power_disable(info);
|
|
}
|
|
mutex_unlock(&info->lock);
|
|
|
|
/* Restore the controls state */
|
|
if (!ret && on)
|
|
ret = v4l2_ctrl_handler_setup(&info->hdl);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int noon010_s_stream(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct noon010_info *info = to_noon010(sd);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->lock);
|
|
if (!info->streaming != !on) {
|
|
ret = noon010_power_ctrl(sd, false, !on);
|
|
if (!ret)
|
|
info->streaming = on;
|
|
}
|
|
if (!ret && on && info->apply_new_cfg) {
|
|
ret = noon010_set_params(sd);
|
|
if (!ret)
|
|
info->apply_new_cfg = 0;
|
|
}
|
|
mutex_unlock(&info->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int noon010_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct noon010_info *info = to_noon010(sd);
|
|
|
|
v4l2_ctrl_handler_log_status(&info->hdl, sd->name);
|
|
return 0;
|
|
}
|
|
|
|
static int noon010_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
|
|
{
|
|
struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(sd, fh->pad, 0);
|
|
|
|
mf->width = noon010_sizes[0].width;
|
|
mf->height = noon010_sizes[0].height;
|
|
mf->code = noon010_formats[0].code;
|
|
mf->colorspace = V4L2_COLORSPACE_JPEG;
|
|
mf->field = V4L2_FIELD_NONE;
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_internal_ops noon010_subdev_internal_ops = {
|
|
.open = noon010_open,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
|
|
.s_ctrl = noon010_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_core_ops noon010_core_ops = {
|
|
.s_power = noon010_s_power,
|
|
.log_status = noon010_log_status,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops noon010_pad_ops = {
|
|
.enum_mbus_code = noon010_enum_mbus_code,
|
|
.get_fmt = noon010_get_fmt,
|
|
.set_fmt = noon010_set_fmt,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops noon010_video_ops = {
|
|
.s_stream = noon010_s_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops noon010_ops = {
|
|
.core = &noon010_core_ops,
|
|
.pad = &noon010_pad_ops,
|
|
.video = &noon010_video_ops,
|
|
};
|
|
|
|
/* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */
|
|
static int noon010_detect(struct i2c_client *client, struct noon010_info *info)
|
|
{
|
|
int ret;
|
|
|
|
ret = power_enable(info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
|
|
if (ret < 0)
|
|
dev_err(&client->dev, "I2C read failed: 0x%X\n", ret);
|
|
|
|
power_disable(info);
|
|
|
|
return ret == NOON010PC30_ID ? 0 : -ENODEV;
|
|
}
|
|
|
|
static int noon010_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct noon010_info *info;
|
|
struct v4l2_subdev *sd;
|
|
const struct noon010pc30_platform_data *pdata
|
|
= client->dev.platform_data;
|
|
int ret;
|
|
int i;
|
|
|
|
if (!pdata) {
|
|
dev_err(&client->dev, "No platform data!\n");
|
|
return -EIO;
|
|
}
|
|
|
|
info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&info->lock);
|
|
sd = &info->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &noon010_ops);
|
|
strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
|
|
|
|
sd->internal_ops = &noon010_subdev_internal_ops;
|
|
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
|
|
v4l2_ctrl_handler_init(&info->hdl, 3);
|
|
|
|
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
|
|
V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
|
|
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
|
|
V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
|
|
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
|
|
V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
|
|
|
|
sd->ctrl_handler = &info->hdl;
|
|
|
|
ret = info->hdl.error;
|
|
if (ret)
|
|
goto np_err;
|
|
|
|
info->i2c_reg_page = -1;
|
|
info->gpio_nreset = -EINVAL;
|
|
info->gpio_nstby = -EINVAL;
|
|
info->curr_fmt = &noon010_formats[0];
|
|
info->curr_win = &noon010_sizes[0];
|
|
|
|
if (gpio_is_valid(pdata->gpio_nreset)) {
|
|
ret = devm_gpio_request_one(&client->dev, pdata->gpio_nreset,
|
|
GPIOF_OUT_INIT_LOW,
|
|
"NOON010PC30 NRST");
|
|
if (ret) {
|
|
dev_err(&client->dev, "GPIO request error: %d\n", ret);
|
|
goto np_err;
|
|
}
|
|
info->gpio_nreset = pdata->gpio_nreset;
|
|
gpio_export(info->gpio_nreset, 0);
|
|
}
|
|
|
|
if (gpio_is_valid(pdata->gpio_nstby)) {
|
|
ret = devm_gpio_request_one(&client->dev, pdata->gpio_nstby,
|
|
GPIOF_OUT_INIT_LOW,
|
|
"NOON010PC30 NSTBY");
|
|
if (ret) {
|
|
dev_err(&client->dev, "GPIO request error: %d\n", ret);
|
|
goto np_err;
|
|
}
|
|
info->gpio_nstby = pdata->gpio_nstby;
|
|
gpio_export(info->gpio_nstby, 0);
|
|
}
|
|
|
|
for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
|
|
info->supply[i].supply = noon010_supply_name[i];
|
|
|
|
ret = devm_regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
|
|
info->supply);
|
|
if (ret)
|
|
goto np_err;
|
|
|
|
info->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
ret = media_entity_pads_init(&sd->entity, 1, &info->pad);
|
|
if (ret < 0)
|
|
goto np_err;
|
|
|
|
ret = noon010_detect(client, info);
|
|
if (!ret)
|
|
return 0;
|
|
|
|
np_err:
|
|
v4l2_ctrl_handler_free(&info->hdl);
|
|
v4l2_device_unregister_subdev(sd);
|
|
return ret;
|
|
}
|
|
|
|
static int noon010_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct noon010_info *info = to_noon010(sd);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(&info->hdl);
|
|
media_entity_cleanup(&sd->entity);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id noon010_id[] = {
|
|
{ MODULE_NAME, 0 },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, noon010_id);
|
|
|
|
|
|
static struct i2c_driver noon010_i2c_driver = {
|
|
.driver = {
|
|
.name = MODULE_NAME
|
|
},
|
|
.probe = noon010_probe,
|
|
.remove = noon010_remove,
|
|
.id_table = noon010_id,
|
|
};
|
|
|
|
module_i2c_driver(noon010_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver");
|
|
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
|
|
MODULE_LICENSE("GPL");
|