diff options
Diffstat (limited to 'drivers/media/video/sr030pc30.c')
| -rw-r--r-- | drivers/media/video/sr030pc30.c | 871 |
1 files changed, 0 insertions, 871 deletions
diff --git a/drivers/media/video/sr030pc30.c b/drivers/media/video/sr030pc30.c deleted file mode 100644 index e9d95bda2ab1..000000000000 --- a/drivers/media/video/sr030pc30.c +++ /dev/null @@ -1,871 +0,0 @@ -/* - * Driver for SiliconFile SR030PC30 VGA (1/10-Inch) Image Sensor with ISP - * - * Copyright (C) 2010 Samsung Electronics Co., Ltd - * Author: Sylwester Nawrocki, s.nawrocki@samsung.com - * - * Based on original driver authored by Dongsoo Nathaniel Kim - * and HeungJun Kim <riverful.kim@samsung.com>. - * - * Based on mt9v011 Micron Digital Image Sensor driver - * Copyright (c) 2009 Mauro Carvalho Chehab (mchehab@redhat.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/i2c.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <media/v4l2-device.h> -#include <media/v4l2-subdev.h> -#include <media/v4l2-mediabus.h> -#include <media/sr030pc30.h> - -static int debug; -module_param(debug, int, 0644); - -#define MODULE_NAME "SR030PC30" - -/* - * Register offsets within a page - * b15..b8 - page id, b7..b0 - register address - */ -#define POWER_CTRL_REG 0x0001 -#define PAGEMODE_REG 0x03 -#define DEVICE_ID_REG 0x0004 -#define NOON010PC30_ID 0x86 -#define SR030PC30_ID 0x8C -#define VDO_CTL1_REG 0x0010 -#define SUBSAMPL_NONE_VGA 0 -#define SUBSAMPL_QVGA 0x10 -#define SUBSAMPL_QQVGA 0x20 -#define VDO_CTL2_REG 0x0011 -#define SYNC_CTL_REG 0x0012 -#define WIN_ROWH_REG 0x0020 -#define WIN_ROWL_REG 0x0021 -#define WIN_COLH_REG 0x0022 -#define WIN_COLL_REG 0x0023 -#define WIN_HEIGHTH_REG 0x0024 -#define WIN_HEIGHTL_REG 0x0025 -#define WIN_WIDTHH_REG 0x0026 -#define WIN_WIDTHL_REG 0x0027 -#define HBLANKH_REG 0x0040 -#define HBLANKL_REG 0x0041 -#define VSYNCH_REG 0x0042 -#define VSYNCL_REG 0x0043 -/* page 10 */ -#define ISP_CTL_REG(n) (0x1010 + (n)) -#define YOFS_REG 0x1040 -#define DARK_YOFS_REG 0x1041 -#define AG_ABRTH_REG 0x1050 -#define SAT_CTL_REG 0x1060 -#define BSAT_REG 0x1061 -#define RSAT_REG 0x1062 -#define AG_SAT_TH_REG 0x1063 -/* page 11 */ -#define ZLPF_CTRL_REG 0x1110 -#define ZLPF_CTRL2_REG 0x1112 -#define ZLPF_AGH_THR_REG 0x1121 -#define ZLPF_THR_REG 0x1160 -#define ZLPF_DYN_THR_REG 0x1160 -/* page 12 */ -#define YCLPF_CTL1_REG 0x1240 -#define YCLPF_CTL2_REG 0x1241 -#define YCLPF_THR_REG 0x1250 -#define BLPF_CTL_REG 0x1270 -#define BLPF_THR1_REG 0x1274 -#define BLPF_THR2_REG 0x1275 -/* page 14 - Lens Shading Compensation */ -#define LENS_CTRL_REG 0x1410 -#define LENS_XCEN_REG 0x1420 -#define LENS_YCEN_REG 0x1421 -#define LENS_R_COMP_REG 0x1422 -#define LENS_G_COMP_REG 0x1423 -#define LENS_B_COMP_REG 0x1424 -/* page 15 - Color correction */ -#define CMC_CTL_REG 0x1510 -#define CMC_OFSGH_REG 0x1514 -#define CMC_OFSGL_REG 0x1516 -#define CMC_SIGN_REG 0x1517 -/* Color correction coefficients */ -#define CMC_COEF_REG(n) (0x1530 + (n)) -/* Color correction offset coefficients */ -#define CMC_OFS_REG(n) (0x1540 + (n)) -/* page 16 - Gamma correction */ -#define GMA_CTL_REG 0x1610 -/* Gamma correction coefficients 0.14 */ -#define GMA_COEF_REG(n) (0x1630 + (n)) -/* page 20 - Auto Exposure */ -#define AE_CTL1_REG 0x2010 -#define AE_CTL2_REG 0x2011 -#define AE_FRM_CTL_REG 0x2020 -#define AE_FINE_CTL_REG(n) (0x2028 + (n)) -#define EXP_TIMEH_REG 0x2083 -#define EXP_TIMEM_REG 0x2084 -#define EXP_TIMEL_REG 0x2085 -#define EXP_MMINH_REG 0x2086 -#define EXP_MMINL_REG 0x2087 -#define EXP_MMAXH_REG 0x2088 -#define EXP_MMAXM_REG 0x2089 -#define EXP_MMAXL_REG 0x208A -/* page 22 - Auto White Balance */ -#define AWB_CTL1_REG 0x2210 -#define AWB_ENABLE 0x80 -#define AWB_CTL2_REG 0x2211 -#define MWB_ENABLE 0x01 -/* RGB gain control (manual WB) when AWB_CTL1[7]=0 */ -#define AWB_RGAIN_REG 0x2280 -#define AWB_GGAIN_REG 0x2281 -#define AWB_BGAIN_REG 0x2282 -#define AWB_RMAX_REG 0x2283 -#define AWB_RMIN_REG 0x2284 -#define AWB_BMAX_REG 0x2285 -#define AWB_BMIN_REG 0x2286 -/* R, B gain range in bright light conditions */ -#define AWB_RMAXB_REG 0x2287 -#define AWB_RMINB_REG 0x2288 -#define AWB_BMAXB_REG 0x2289 -#define AWB_BMINB_REG 0x228A -/* manual white balance, when AWB_CTL2[0]=1 */ -#define MWB_RGAIN_REG 0x22B2 -#define MWB_BGAIN_REG 0x22B3 -/* the token to mark an array end */ -#define REG_TERM 0xFFFF - -/* Minimum and maximum exposure time in ms */ -#define EXPOS_MIN_MS 1 -#define EXPOS_MAX_MS 125 - -struct sr030pc30_info { - struct v4l2_subdev sd; - const struct sr030pc30_platform_data *pdata; - const struct sr030pc30_format *curr_fmt; - const struct sr030pc30_frmsize *curr_win; - unsigned int auto_wb:1; - unsigned int auto_exp:1; - unsigned int hflip:1; - unsigned int vflip:1; - unsigned int sleep:1; - unsigned int exposure; - u8 blue_balance; - u8 red_balance; - u8 i2c_reg_page; -}; - -struct sr030pc30_format { - enum v4l2_mbus_pixelcode code; - enum v4l2_colorspace colorspace; - u16 ispctl1_reg; -}; - -struct sr030pc30_frmsize { - u16 width; - u16 height; - int vid_ctl1; -}; - -struct i2c_regval { - u16 addr; - u16 val; -}; - -static const struct v4l2_queryctrl sr030pc30_ctrl[] = { - { - .id = V4L2_CID_AUTO_WHITE_BALANCE, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Auto White Balance", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, { - .id = V4L2_CID_RED_BALANCE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Red Balance", - .minimum = 0, - .maximum = 127, - .step = 1, - .default_value = 64, - .flags = 0, - }, { - .id = V4L2_CID_BLUE_BALANCE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Blue Balance", - .minimum = 0, - .maximum = 127, - .step = 1, - .default_value = 64, - }, { - .id = V4L2_CID_EXPOSURE_AUTO, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Auto Exposure", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, { - .id = V4L2_CID_EXPOSURE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Exposure", - .minimum = EXPOS_MIN_MS, - .maximum = EXPOS_MAX_MS, - .step = 1, - .default_value = 1, - }, { - } -}; - -/* supported resolutions */ -static const struct sr030pc30_frmsize sr030pc30_sizes[] = { - { - .width = 640, - .height = 480, - .vid_ctl1 = SUBSAMPL_NONE_VGA, - }, { - .width = 320, - .height = 240, - .vid_ctl1 = SUBSAMPL_QVGA, - }, { - .width = 160, - .height = 120, - .vid_ctl1 = SUBSAMPL_QQVGA, - }, -}; - -/* supported pixel formats */ -static const struct sr030pc30_format sr030pc30_formats[] = { - { - .code = V4L2_MBUS_FMT_YUYV8_2X8, - .colorspace = V4L2_COLORSPACE_JPEG, - .ispctl1_reg = 0x03, - }, { - .code = V4L2_MBUS_FMT_YVYU8_2X8, - .colorspace = V4L2_COLORSPACE_JPEG, - .ispctl1_reg = 0x02, - }, { - .code = V4L2_MBUS_FMT_VYUY8_2X8, - .colorspace = V4L2_COLORSPACE_JPEG, - .ispctl1_reg = 0, - }, { - .code = V4L2_MBUS_FMT_UYVY8_2X8, - .colorspace = V4L2_COLORSPACE_JPEG, - .ispctl1_reg = 0x01, - }, { - .code = V4L2_MBUS_FMT_RGB565_2X8_BE, - .colorspace = V4L2_COLORSPACE_JPEG, - .ispctl1_reg = 0x40, - }, -}; - -static const struct i2c_regval sr030pc30_base_regs[] = { - /* Window size and position within pixel matrix */ - { WIN_ROWH_REG, 0x00 }, { WIN_ROWL_REG, 0x06 }, - { WIN_COLH_REG, 0x00 }, { WIN_COLL_REG, 0x06 }, - { WIN_HEIGHTH_REG, 0x01 }, { WIN_HEIGHTL_REG, 0xE0 }, - { WIN_WIDTHH_REG, 0x02 }, { WIN_WIDTHL_REG, 0x80 }, - { HBLANKH_REG, 0x01 }, { HBLANKL_REG, 0x50 }, - { VSYNCH_REG, 0x00 }, { VSYNCL_REG, 0x14 }, - { SYNC_CTL_REG, 0 }, - /* Color corection and saturation */ - { ISP_CTL_REG(0), 0x30 }, { YOFS_REG, 0x80 }, - { DARK_YOFS_REG, 0x04 }, { AG_ABRTH_REG, 0x78 }, - { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 }, - { AG_SAT_TH_REG, 0xF0 }, { 0x1064, 0x80 }, - { CMC_CTL_REG, 0x03 }, { CMC_OFSGH_REG, 0x3C }, - { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x2F }, - { CMC_COEF_REG(0), 0xCB }, { CMC_OFS_REG(0), 0x87 }, - { CMC_COEF_REG(1), 0x61 }, { CMC_OFS_REG(1), 0x18 }, - { CMC_COEF_REG(2), 0x16 }, { CMC_OFS_REG(2), 0x91 }, - { CMC_COEF_REG(3), 0x23 }, { CMC_OFS_REG(3), 0x94 }, - { CMC_COEF_REG(4), 0xCE }, { CMC_OFS_REG(4), 0x9f }, - { CMC_COEF_REG(5), 0x2B }, { CMC_OFS_REG(5), 0x33 }, - { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x00 }, - { CMC_COEF_REG(7), 0x34 }, { CMC_OFS_REG(7), 0x94 }, - { CMC_COEF_REG(8), 0x75 }, { CMC_OFS_REG(8), 0x14 }, - /* Color corection coefficients */ - { GMA_CTL_REG, 0x03 }, { GMA_COEF_REG(0), 0x00 }, - { GMA_COEF_REG(1), 0x19 }, { GMA_COEF_REG(2), 0x26 }, - { GMA_COEF_REG(3), 0x3B }, { GMA_COEF_REG(4), 0x5D }, - { GMA_COEF_REG(5), 0x79 }, { GMA_COEF_REG(6), 0x8E }, - { GMA_COEF_REG(7), 0x9F }, { GMA_COEF_REG(8), 0xAF }, - { GMA_COEF_REG(9), 0xBD }, { GMA_COEF_REG(10), 0xCA }, - { GMA_COEF_REG(11), 0xDD }, { GMA_COEF_REG(12), 0xEC }, - { GMA_COEF_REG(13), 0xF7 }, { GMA_COEF_REG(14), 0xFF }, - /* Noise reduction, Z-LPF, YC-LPF and BLPF filters setup */ - { ZLPF_CTRL_REG, 0x99 }, { ZLPF_CTRL2_REG, 0x0E }, - { ZLPF_AGH_THR_REG, 0x29 }, { ZLPF_THR_REG, 0x0F }, - { ZLPF_DYN_THR_REG, 0x63 }, { YCLPF_CTL1_REG, 0x23 }, - { YCLPF_CTL2_REG, 0x3B }, { YCLPF_THR_REG, 0x05 }, - { BLPF_CTL_REG, 0x1D }, { BLPF_THR1_REG, 0x05 }, - { BLPF_THR2_REG, 0x04 }, - /* Automatic white balance */ - { AWB_CTL1_REG, 0xFB }, { AWB_CTL2_REG, 0x26 }, - { AWB_RMAX_REG, 0x54 }, { AWB_RMIN_REG, 0x2B }, - { AWB_BMAX_REG, 0x57 }, { AWB_BMIN_REG, 0x29 }, - { AWB_RMAXB_REG, 0x50 }, { AWB_RMINB_REG, 0x43 }, - { AWB_BMAXB_REG, 0x30 }, { AWB_BMINB_REG, 0x22 }, - /* Auto exposure */ - { AE_CTL1_REG, 0x8C }, { AE_CTL2_REG, 0x04 }, - { AE_FRM_CTL_REG, 0x01 }, { AE_FINE_CTL_REG(0), 0x3F }, - { AE_FINE_CTL_REG(1), 0xA3 }, { AE_FINE_CTL_REG(3), 0x34 }, - /* Lens shading compensation */ - { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 }, - { LENS_YCEN_REG, 0x70 }, { LENS_R_COMP_REG, 0x53 }, - { LENS_G_COMP_REG, 0x40 }, { LENS_B_COMP_REG, 0x3e }, - { REG_TERM, 0 }, -}; - -static inline struct sr030pc30_info *to_sr030pc30(struct v4l2_subdev *sd) -{ - return container_of(sd, struct sr030pc30_info, sd); -} - -static inline int set_i2c_page(struct sr030pc30_info *info, - struct i2c_client *client, unsigned int reg) -{ - int ret = 0; - u32 page = reg >> 8 & 0xFF; - - if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) { - ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page); - if (!ret) - info->i2c_reg_page = page; - } - return ret; -} - -static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct sr030pc30_info *info = to_sr030pc30(sd); - - int ret = set_i2c_page(info, client, reg_addr); - if (!ret) - ret = i2c_smbus_read_byte_data(client, reg_addr & 0xFF); - return ret; -} - -static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct sr030pc30_info *info = to_sr030pc30(sd); - - int ret = set_i2c_page(info, client, reg_addr); - if (!ret) - ret = i2c_smbus_write_byte_data( - client, reg_addr & 0xFF, val); - return ret; -} - -static inline int sr030pc30_bulk_write_reg(struct v4l2_subdev *sd, - const struct i2c_regval *msg) -{ - while (msg->addr != REG_TERM) { - int ret = cam_i2c_write(sd, msg->addr, msg->val); - if (ret) - return ret; - msg++; - } - return 0; -} - -/* Device reset and sleep mode control */ -static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd, - bool reset, bool sleep) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - u8 reg = sleep ? 0xF1 : 0xF0; - int ret = 0; - - if (reset) - ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02); - if (!ret) { - ret = cam_i2c_write(sd, POWER_CTRL_REG, reg); - if (!ret) { - info->sleep = sleep; - if (reset) - info->i2c_reg_page = -1; - } - } - return ret; -} - -static inline int sr030pc30_enable_autoexposure(struct v4l2_subdev *sd, int on) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - /* auto anti-flicker is also enabled here */ - int ret = cam_i2c_write(sd, AE_CTL1_REG, on ? 0xDC : 0x0C); - if (!ret) - info->auto_exp = on; - return ret; -} - -static int sr030pc30_set_exposure(struct v4l2_subdev *sd, int value) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - - unsigned long expos = value * info->pdata->clk_rate / (8 * 1000); - - int ret = cam_i2c_write(sd, EXP_TIMEH_REG, expos >> 16 & 0xFF); - if (!ret) - ret = cam_i2c_write(sd, EXP_TIMEM_REG, expos >> 8 & 0xFF); - if (!ret) - ret = cam_i2c_write(sd, EXP_TIMEL_REG, expos & 0xFF); - if (!ret) { /* Turn off AE */ - info->exposure = value; - ret = sr030pc30_enable_autoexposure(sd, 0); - } - return ret; -} - -/* Automatic white balance control */ -static int sr030pc30_enable_autowhitebalance(struct v4l2_subdev *sd, int on) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - - int ret = cam_i2c_write(sd, AWB_CTL2_REG, on ? 0x2E : 0x2F); - if (!ret) - ret = cam_i2c_write(sd, AWB_CTL1_REG, on ? 0xFB : 0x7B); - if (!ret) - info->auto_wb = on; - - return ret; -} - -static int sr030pc30_set_flip(struct v4l2_subdev *sd) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - - s32 reg = cam_i2c_read(sd, VDO_CTL2_REG); - if (reg < 0) - return reg; - - reg &= 0x7C; - if (info->hflip) - reg |= 0x01; - if (info->vflip) - reg |= 0x02; - return cam_i2c_write(sd, VDO_CTL2_REG, reg | 0x80); -} - -/* Configure resolution, color format and image flip */ -static int sr030pc30_set_params(struct v4l2_subdev *sd) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - int ret; - - if (!info->curr_win) - return -EINVAL; - - /* Configure the resolution through subsampling */ - ret = cam_i2c_write(sd, VDO_CTL1_REG, - info->curr_win->vid_ctl1); - - if (!ret && info->curr_fmt) - ret = cam_i2c_write(sd, ISP_CTL_REG(0), - info->curr_fmt->ispctl1_reg); - if (!ret) - ret = sr030pc30_set_flip(sd); - - return ret; -} - -/* Find nearest matching image pixel size. */ -static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf) -{ - unsigned int min_err = ~0; - int i = ARRAY_SIZE(sr030pc30_sizes); - const struct sr030pc30_frmsize *fsize = &sr030pc30_sizes[0], - *match = NULL; - while (i--) { - int err = abs(fsize->width - mf->width) - + abs(fsize->height - mf->height); - if (err < min_err) { - min_err = err; - match = fsize; - } - fsize++; - } - if (match) { - mf->width = match->width; - mf->height = match->height; - return 0; - } - return -EINVAL; -} - -static int sr030pc30_queryctrl(struct v4l2_subdev *sd, - struct v4l2_queryctrl *qc) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++) - if (qc->id == sr030pc30_ctrl[i].id) { - *qc = sr030pc30_ctrl[i]; - v4l2_dbg(1, debug, sd, "%s id: %d\n", - __func__, qc->id); - return 0; - } - - return -EINVAL; -} - -static inline int sr030pc30_set_bluebalance(struct v4l2_subdev *sd, int value) -{ - int ret = cam_i2c_write(sd, MWB_BGAIN_REG, value); - if (!ret) - to_sr030pc30(sd)->blue_balance = value; - return ret; -} - -static inline int sr030pc30_set_redbalance(struct v4l2_subdev *sd, int value) -{ - int ret = cam_i2c_write(sd, MWB_RGAIN_REG, value); - if (!ret) - to_sr030pc30(sd)->red_balance = value; - return ret; -} - -static int sr030pc30_s_ctrl(struct v4l2_subdev *sd, - struct v4l2_control *ctrl) -{ - int i, ret = 0; - - for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++) - if (ctrl->id == sr030pc30_ctrl[i].id) - break; - - if (i == ARRAY_SIZE(sr030pc30_ctrl)) - return -EINVAL; - - if (ctrl->value < sr030pc30_ctrl[i].minimum || - ctrl->value > sr030pc30_ctrl[i].maximum) - return -ERANGE; - - v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n", - __func__, ctrl->id, ctrl->value); - - switch (ctrl->id) { - case V4L2_CID_AUTO_WHITE_BALANCE: - sr030pc30_enable_autowhitebalance(sd, ctrl->value); - break; - case V4L2_CID_BLUE_BALANCE: - ret = sr030pc30_set_bluebalance(sd, ctrl->value); - break; - case V4L2_CID_RED_BALANCE: - ret = sr030pc30_set_redbalance(sd, ctrl->value); - break; - case V4L2_CID_EXPOSURE_AUTO: - sr030pc30_enable_autoexposure(sd, - ctrl->value == V4L2_EXPOSURE_AUTO); - break; - case V4L2_CID_EXPOSURE: - ret = sr030pc30_set_exposure(sd, ctrl->value); - break; - default: - return -EINVAL; - } - - return ret; -} - -static int sr030pc30_g_ctrl(struct v4l2_subdev *sd, - struct v4l2_control *ctrl) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - - v4l2_dbg(1, debug, sd, "%s: id: %d\n", __func__, ctrl->id); - - switch (ctrl->id) { - case V4L2_CID_AUTO_WHITE_BALANCE: - ctrl->value = info->auto_wb; - break; - case V4L2_CID_BLUE_BALANCE: - ctrl->value = info->blue_balance; - break; - case V4L2_CID_RED_BALANCE: - ctrl->value = info->red_balance; - break; - case V4L2_CID_EXPOSURE_AUTO: - ctrl->value = info->auto_exp; - break; - case V4L2_CID_EXPOSURE: - ctrl->value = info->exposure; - break; - default: - return -EINVAL; - } - return 0; -} - -static int sr030pc30_enum_fmt(struct v4l2_subdev *sd, unsigned int index, - enum v4l2_mbus_pixelcode *code) -{ - if (!code || index >= ARRAY_SIZE(sr030pc30_formats)) - return -EINVAL; - - *code = sr030pc30_formats[index].code; - return 0; -} - -static int sr030pc30_g_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - int ret; - - if (!mf) - return -EINVAL; - - if (!info->curr_win || !info->curr_fmt) { - ret = sr030pc30_set_params(sd); - if (ret) - return ret; - } - - 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; - - return 0; -} - -/* Return nearest media bus frame format. */ -static const struct sr030pc30_format *try_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - int i = ARRAY_SIZE(sr030pc30_formats); - - sr030pc30_try_frame_size(mf); - - while (i--) - if (mf->code == sr030pc30_formats[i].code) - break; - - mf->code = sr030pc30_formats[i].code; - - return &sr030pc30_formats[i]; -} - -/* Return nearest media bus frame format. */ -static int sr030pc30_try_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - if (!sd || !mf) - return -EINVAL; - - try_fmt(sd, mf); - return 0; -} - -static int sr030pc30_s_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - - if (!sd || !mf) - return -EINVAL; - - info->curr_fmt = try_fmt(sd, mf); - - return sr030pc30_set_params(sd); -} - -static int sr030pc30_base_config(struct v4l2_subdev *sd) -{ - struct sr030pc30_info *info = to_sr030pc30(sd); - int ret; - unsigned long expmin, expmax; - - ret = sr030pc30_bulk_write_reg(sd, sr030pc30_base_regs); - if (!ret) { - info->curr_fmt = &sr030pc30_formats[0]; - info->curr_win = &sr030pc30_sizes[0]; - ret = sr030pc30_set_params(sd); - } - if (!ret) - ret = sr030pc30_pwr_ctrl(sd, false, false); - - if (!ret && !info->pdata) - return ret; - - expmin = EXPOS_MIN_MS * info->pdata->clk_rate / (8 * 1000); - expmax = EXPOS_MAX_MS * info->pdata->clk_rate / (8 * 1000); - - v4l2_dbg(1, debug, sd, "%s: expmin= %lx, expmax= %lx", __func__, - expmin, expmax); - - /* Setting up manual exposure time range */ - ret = cam_i2c_write(sd, EXP_MMINH_REG, expmin >> 8 & 0xFF); - if (!ret) - ret = cam_i2c_write(sd, EXP_MMINL_REG, expmin & 0xFF); - if (!ret) - ret = cam_i2c_write(sd, EXP_MMAXH_REG, expmax >> 16 & 0xFF); - if (!ret) - ret = cam_i2c_write(sd, EXP_MMAXM_REG, expmax >> 8 & 0xFF); - if (!ret) - ret = cam_i2c_write(sd, EXP_MMAXL_REG, expmax & 0xFF); - - return ret; -} - -static int sr030pc30_s_power(struct v4l2_subdev *sd, int on) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct sr030pc30_info *info = to_sr030pc30(sd); - const struct sr030pc30_platform_data *pdata = info->pdata; - int ret; - - if (pdata == NULL) { - WARN(1, "No platform data!\n"); - return -EINVAL; - } - - /* - * Put sensor into power sleep mode before switching off - * power and disabling MCLK. - */ - if (!on) - sr030pc30_pwr_ctrl(sd, false, true); - - /* set_power controls sensor's power and clock */ - if (pdata->set_power) { - ret = pdata->set_power(&client->dev, on); - if (ret) - return ret; - } - - if (on) { - ret = sr030pc30_base_config(sd); - } else { - ret = 0; - info->curr_win = NULL; - info->curr_fmt = NULL; - } - - return ret; -} - -static const struct v4l2_subdev_core_ops sr030pc30_core_ops = { - .s_power = sr030pc30_s_power, - .queryctrl = sr030pc30_queryctrl, - .s_ctrl = sr030pc30_s_ctrl, - .g_ctrl = sr030pc30_g_ctrl, -}; - -static const struct v4l2_subdev_video_ops sr030pc30_video_ops = { - .g_mbus_fmt = sr030pc30_g_fmt, - .s_mbus_fmt = sr030pc30_s_fmt, - .try_mbus_fmt = sr030pc30_try_fmt, - .enum_mbus_fmt = sr030pc30_enum_fmt, -}; - -static const struct v4l2_subdev_ops sr030pc30_ops = { - .core = &sr030pc30_core_ops, - .video = &sr030pc30_video_ops, -}; - -/* - * Detect sensor type. Return 0 if SR030PC30 was detected - * or -ENODEV otherwise. - */ -static int sr030pc30_detect(struct i2c_client *client) -{ - const struct sr030pc30_platform_data *pdata - = client->dev.platform_data; - int ret; - - /* Enable sensor's power and clock */ - if (pdata->set_power) { - ret = pdata->set_power(&client->dev, 1); - if (ret) - return ret; - } - - ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG); - - if (pdata->set_power) - pdata->set_power(&client->dev, 0); - - if (ret < 0) { - dev_err(&client->dev, "%s: I2C read failed\n", __func__); - return ret; - } - - return ret == SR030PC30_ID ? 0 : -ENODEV; -} - - -static int sr030pc30_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct sr030pc30_info *info; - struct v4l2_subdev *sd; - const struct sr030pc30_platform_data *pdata - = client->dev.platform_data; - int ret; - - if (!pdata) { - dev_err(&client->dev, "No platform data!"); - return -EIO; - } - - ret = sr030pc30_detect(client); - if (ret) - return ret; - - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - sd = &info->sd; - strcpy(sd->name, MODULE_NAME); - info->pdata = client->dev.platform_data; - - v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops); - - info->i2c_reg_page = -1; - info->hflip = 1; - info->auto_exp = 1; - info->exposure = 30; - - return 0; -} - -static int sr030pc30_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct sr030pc30_info *info = to_sr030pc30(sd); - - v4l2_device_unregister_subdev(sd); - kfree(info); - return 0; -} - -static const struct i2c_device_id sr030pc30_id[] = { - { MODULE_NAME, 0 }, - { }, -}; -MODULE_DEVICE_TABLE(i2c, sr030pc30_id); - - -static struct i2c_driver sr030pc30_i2c_driver = { - .driver = { - .name = MODULE_NAME - }, - .probe = sr030pc30_probe, - .remove = sr030pc30_remove, - .id_table = sr030pc30_id, -}; - -module_i2c_driver(sr030pc30_i2c_driver); - -MODULE_DESCRIPTION("Siliconfile SR030PC30 camera driver"); -MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); -MODULE_LICENSE("GPL"); |