1437 lines
35 KiB
C
1437 lines
35 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Driver for RJ54N1CB0C CMOS Image Sensor from Sharp
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*
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* Copyright (C) 2018, Jacopo Mondi <jacopo@jmondi.org>
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*
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* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/v4l2-mediabus.h>
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#include <linux/videodev2.h>
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#include <media/i2c/rj54n1cb0c.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-subdev.h>
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#define RJ54N1_DEV_CODE 0x0400
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#define RJ54N1_DEV_CODE2 0x0401
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#define RJ54N1_OUT_SEL 0x0403
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#define RJ54N1_XY_OUTPUT_SIZE_S_H 0x0404
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#define RJ54N1_X_OUTPUT_SIZE_S_L 0x0405
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#define RJ54N1_Y_OUTPUT_SIZE_S_L 0x0406
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#define RJ54N1_XY_OUTPUT_SIZE_P_H 0x0407
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#define RJ54N1_X_OUTPUT_SIZE_P_L 0x0408
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#define RJ54N1_Y_OUTPUT_SIZE_P_L 0x0409
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#define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a
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#define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b
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#define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c
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#define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d
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#define RJ54N1_RESIZE_N 0x040e
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#define RJ54N1_RESIZE_N_STEP 0x040f
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#define RJ54N1_RESIZE_STEP 0x0410
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#define RJ54N1_RESIZE_HOLD_H 0x0411
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#define RJ54N1_RESIZE_HOLD_L 0x0412
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#define RJ54N1_H_OBEN_OFS 0x0413
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#define RJ54N1_V_OBEN_OFS 0x0414
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#define RJ54N1_RESIZE_CONTROL 0x0415
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#define RJ54N1_STILL_CONTROL 0x0417
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#define RJ54N1_INC_USE_SEL_H 0x0425
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#define RJ54N1_INC_USE_SEL_L 0x0426
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#define RJ54N1_MIRROR_STILL_MODE 0x0427
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#define RJ54N1_INIT_START 0x0428
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#define RJ54N1_SCALE_1_2_LEV 0x0429
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#define RJ54N1_SCALE_4_LEV 0x042a
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#define RJ54N1_Y_GAIN 0x04d8
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#define RJ54N1_APT_GAIN_UP 0x04fa
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#define RJ54N1_RA_SEL_UL 0x0530
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#define RJ54N1_BYTE_SWAP 0x0531
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#define RJ54N1_OUT_SIGPO 0x053b
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#define RJ54N1_WB_SEL_WEIGHT_I 0x054e
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#define RJ54N1_BIT8_WB 0x0569
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#define RJ54N1_HCAPS_WB 0x056a
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#define RJ54N1_VCAPS_WB 0x056b
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#define RJ54N1_HCAPE_WB 0x056c
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#define RJ54N1_VCAPE_WB 0x056d
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#define RJ54N1_EXPOSURE_CONTROL 0x058c
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#define RJ54N1_FRAME_LENGTH_S_H 0x0595
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#define RJ54N1_FRAME_LENGTH_S_L 0x0596
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#define RJ54N1_FRAME_LENGTH_P_H 0x0597
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#define RJ54N1_FRAME_LENGTH_P_L 0x0598
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#define RJ54N1_PEAK_H 0x05b7
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#define RJ54N1_PEAK_50 0x05b8
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#define RJ54N1_PEAK_60 0x05b9
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#define RJ54N1_PEAK_DIFF 0x05ba
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#define RJ54N1_IOC 0x05ef
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#define RJ54N1_TG_BYPASS 0x0700
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#define RJ54N1_PLL_L 0x0701
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#define RJ54N1_PLL_N 0x0702
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#define RJ54N1_PLL_EN 0x0704
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#define RJ54N1_RATIO_TG 0x0706
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#define RJ54N1_RATIO_T 0x0707
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#define RJ54N1_RATIO_R 0x0708
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#define RJ54N1_RAMP_TGCLK_EN 0x0709
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#define RJ54N1_OCLK_DSP 0x0710
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#define RJ54N1_RATIO_OP 0x0711
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#define RJ54N1_RATIO_O 0x0712
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#define RJ54N1_OCLK_SEL_EN 0x0713
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#define RJ54N1_CLK_RST 0x0717
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#define RJ54N1_RESET_STANDBY 0x0718
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#define RJ54N1_FWFLG 0x07fe
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#define E_EXCLK (1 << 7)
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#define SOFT_STDBY (1 << 4)
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#define SEN_RSTX (1 << 2)
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#define TG_RSTX (1 << 1)
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#define DSP_RSTX (1 << 0)
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#define RESIZE_HOLD_SEL (1 << 2)
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#define RESIZE_GO (1 << 1)
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/*
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* When cropping, the camera automatically centers the cropped region, there
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* doesn't seem to be a way to specify an explicit location of the rectangle.
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*/
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#define RJ54N1_COLUMN_SKIP 0
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#define RJ54N1_ROW_SKIP 0
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#define RJ54N1_MAX_WIDTH 1600
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#define RJ54N1_MAX_HEIGHT 1200
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#define PLL_L 2
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#define PLL_N 0x31
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/* I2C addresses: 0x50, 0x51, 0x60, 0x61 */
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/* RJ54N1CB0C has only one fixed colorspace per pixelcode */
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struct rj54n1_datafmt {
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u32 code;
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enum v4l2_colorspace colorspace;
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};
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/* Find a data format by a pixel code in an array */
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static const struct rj54n1_datafmt *rj54n1_find_datafmt(
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u32 code, const struct rj54n1_datafmt *fmt,
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int n)
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{
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int i;
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for (i = 0; i < n; i++)
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if (fmt[i].code == code)
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return fmt + i;
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return NULL;
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}
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static const struct rj54n1_datafmt rj54n1_colour_fmts[] = {
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{MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
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{MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
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{MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
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{MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
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{MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
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{MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB},
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{MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
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{MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB},
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{MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
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};
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struct rj54n1_clock_div {
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u8 ratio_tg; /* can be 0 or an odd number */
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u8 ratio_t;
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u8 ratio_r;
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u8 ratio_op;
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u8 ratio_o;
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};
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struct rj54n1 {
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struct v4l2_subdev subdev;
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struct v4l2_ctrl_handler hdl;
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struct clk *clk;
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struct gpio_desc *pwup_gpio;
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struct gpio_desc *enable_gpio;
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struct rj54n1_clock_div clk_div;
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const struct rj54n1_datafmt *fmt;
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struct v4l2_rect rect; /* Sensor window */
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unsigned int tgclk_mhz;
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bool auto_wb;
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unsigned short width; /* Output window */
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unsigned short height;
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unsigned short resize; /* Sensor * 1024 / resize = Output */
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unsigned short scale;
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u8 bank;
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};
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struct rj54n1_reg_val {
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u16 reg;
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u8 val;
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};
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static const struct rj54n1_reg_val bank_4[] = {
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{0x417, 0},
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{0x42c, 0},
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{0x42d, 0xf0},
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{0x42e, 0},
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{0x42f, 0x50},
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{0x430, 0xf5},
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{0x431, 0x16},
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{0x432, 0x20},
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{0x433, 0},
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{0x434, 0xc8},
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{0x43c, 8},
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{0x43e, 0x90},
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{0x445, 0x83},
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{0x4ba, 0x58},
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{0x4bb, 4},
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{0x4bc, 0x20},
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{0x4db, 4},
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{0x4fe, 2},
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};
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static const struct rj54n1_reg_val bank_5[] = {
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{0x514, 0},
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{0x516, 0},
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{0x518, 0},
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{0x51a, 0},
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{0x51d, 0xff},
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{0x56f, 0x28},
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{0x575, 0x40},
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{0x5bc, 0x48},
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{0x5c1, 6},
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{0x5e5, 0x11},
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{0x5e6, 0x43},
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{0x5e7, 0x33},
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{0x5e8, 0x21},
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{0x5e9, 0x30},
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{0x5ea, 0x0},
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{0x5eb, 0xa5},
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{0x5ec, 0xff},
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{0x5fe, 2},
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};
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static const struct rj54n1_reg_val bank_7[] = {
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{0x70a, 0},
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{0x714, 0xff},
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{0x715, 0xff},
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{0x716, 0x1f},
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{0x7FE, 2},
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};
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static const struct rj54n1_reg_val bank_8[] = {
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{0x800, 0x00},
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{0x801, 0x01},
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{0x802, 0x61},
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{0x805, 0x00},
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{0x806, 0x00},
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{0x807, 0x00},
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{0x808, 0x00},
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{0x809, 0x01},
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{0x80A, 0x61},
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{0x80B, 0x00},
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{0x80C, 0x01},
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{0x80D, 0x00},
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{0x80E, 0x00},
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{0x80F, 0x00},
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{0x810, 0x00},
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{0x811, 0x01},
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{0x812, 0x61},
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{0x813, 0x00},
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{0x814, 0x11},
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{0x815, 0x00},
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{0x816, 0x41},
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{0x817, 0x00},
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{0x818, 0x51},
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{0x819, 0x01},
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{0x81A, 0x1F},
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{0x81B, 0x00},
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{0x81C, 0x01},
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{0x81D, 0x00},
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{0x81E, 0x11},
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{0x81F, 0x00},
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{0x820, 0x41},
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{0x821, 0x00},
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{0x822, 0x51},
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{0x823, 0x00},
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{0x824, 0x00},
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{0x825, 0x00},
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{0x826, 0x47},
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{0x827, 0x01},
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{0x828, 0x4F},
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{0x829, 0x00},
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{0x82A, 0x00},
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{0x82B, 0x00},
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{0x82C, 0x30},
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{0x82D, 0x00},
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{0x82E, 0x40},
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{0x82F, 0x00},
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{0x830, 0xB3},
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{0x831, 0x00},
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{0x832, 0xE3},
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{0x833, 0x00},
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{0x834, 0x00},
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{0x835, 0x00},
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{0x836, 0x00},
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{0x837, 0x00},
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{0x838, 0x00},
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{0x839, 0x01},
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{0x83A, 0x61},
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{0x83B, 0x00},
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{0x83C, 0x01},
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{0x83D, 0x00},
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{0x83E, 0x00},
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{0x83F, 0x00},
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{0x840, 0x00},
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{0x841, 0x01},
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{0x842, 0x61},
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{0x843, 0x00},
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{0x844, 0x1D},
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{0x845, 0x00},
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{0x846, 0x00},
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{0x847, 0x00},
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{0x848, 0x00},
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{0x849, 0x01},
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{0x84A, 0x1F},
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{0x84B, 0x00},
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{0x84C, 0x05},
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{0x84D, 0x00},
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{0x84E, 0x19},
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{0x84F, 0x01},
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{0x850, 0x21},
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{0x851, 0x01},
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{0x852, 0x5D},
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{0x853, 0x00},
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{0x854, 0x00},
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{0x855, 0x00},
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{0x856, 0x19},
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{0x857, 0x01},
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{0x858, 0x21},
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{0x859, 0x00},
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{0x85A, 0x00},
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{0x85B, 0x00},
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{0x85C, 0x00},
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{0x85D, 0x00},
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{0x85E, 0x00},
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{0x85F, 0x00},
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{0x860, 0xB3},
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{0x861, 0x00},
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{0x862, 0xE3},
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{0x863, 0x00},
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{0x864, 0x00},
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{0x865, 0x00},
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{0x866, 0x00},
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{0x867, 0x00},
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{0x868, 0x00},
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{0x869, 0xE2},
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{0x86A, 0x00},
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{0x86B, 0x01},
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{0x86C, 0x06},
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{0x86D, 0x00},
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{0x86E, 0x00},
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{0x86F, 0x00},
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{0x870, 0x60},
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{0x871, 0x8C},
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{0x872, 0x10},
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{0x873, 0x00},
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{0x874, 0xE0},
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{0x875, 0x00},
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{0x876, 0x27},
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{0x877, 0x01},
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{0x878, 0x00},
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{0x879, 0x00},
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{0x87A, 0x00},
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{0x87B, 0x03},
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{0x87C, 0x00},
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{0x87D, 0x00},
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{0x87E, 0x00},
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{0x87F, 0x00},
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{0x880, 0x00},
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{0x881, 0x00},
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{0x882, 0x00},
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{0x883, 0x00},
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{0x884, 0x00},
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{0x885, 0x00},
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{0x886, 0xF8},
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{0x887, 0x00},
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{0x888, 0x03},
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{0x889, 0x00},
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{0x88A, 0x64},
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{0x88B, 0x00},
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{0x88C, 0x03},
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{0x88D, 0x00},
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{0x88E, 0xB1},
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{0x88F, 0x00},
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{0x890, 0x03},
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{0x891, 0x01},
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{0x892, 0x1D},
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{0x893, 0x00},
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{0x894, 0x03},
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{0x895, 0x01},
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{0x896, 0x4B},
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{0x897, 0x00},
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{0x898, 0xE5},
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{0x899, 0x00},
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{0x89A, 0x01},
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{0x89B, 0x00},
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{0x89C, 0x01},
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{0x89D, 0x04},
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{0x89E, 0xC8},
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{0x89F, 0x00},
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{0x8A0, 0x01},
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{0x8A1, 0x01},
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{0x8A2, 0x61},
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{0x8A3, 0x00},
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{0x8A4, 0x01},
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{0x8A5, 0x00},
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{0x8A6, 0x00},
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{0x8A7, 0x00},
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{0x8A8, 0x00},
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{0x8A9, 0x00},
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{0x8AA, 0x7F},
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{0x8AB, 0x03},
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{0x8AC, 0x00},
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{0x8AD, 0x00},
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{0x8AE, 0x00},
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{0x8AF, 0x00},
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{0x8B0, 0x00},
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{0x8B1, 0x00},
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{0x8B6, 0x00},
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{0x8B7, 0x01},
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{0x8B8, 0x00},
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{0x8B9, 0x00},
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{0x8BA, 0x02},
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{0x8BB, 0x00},
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{0x8BC, 0xFF},
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{0x8BD, 0x00},
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{0x8FE, 2},
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};
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static const struct rj54n1_reg_val bank_10[] = {
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{0x10bf, 0x69}
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};
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/* Clock dividers - these are default register values, divider = register + 1 */
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static const struct rj54n1_clock_div clk_div = {
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.ratio_tg = 3 /* default: 5 */,
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.ratio_t = 4 /* default: 1 */,
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.ratio_r = 4 /* default: 0 */,
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.ratio_op = 1 /* default: 5 */,
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.ratio_o = 9 /* default: 0 */,
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};
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static struct rj54n1 *to_rj54n1(const struct i2c_client *client)
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{
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return container_of(i2c_get_clientdata(client), struct rj54n1, subdev);
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}
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static int reg_read(struct i2c_client *client, const u16 reg)
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{
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struct rj54n1 *rj54n1 = to_rj54n1(client);
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int ret;
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/* set bank */
|
|
if (rj54n1->bank != reg >> 8) {
|
|
dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
|
|
ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
|
|
if (ret < 0)
|
|
return ret;
|
|
rj54n1->bank = reg >> 8;
|
|
}
|
|
return i2c_smbus_read_byte_data(client, reg & 0xff);
|
|
}
|
|
|
|
static int reg_write(struct i2c_client *client, const u16 reg,
|
|
const u8 data)
|
|
{
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
int ret;
|
|
|
|
/* set bank */
|
|
if (rj54n1->bank != reg >> 8) {
|
|
dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);
|
|
ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);
|
|
if (ret < 0)
|
|
return ret;
|
|
rj54n1->bank = reg >> 8;
|
|
}
|
|
dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data);
|
|
return i2c_smbus_write_byte_data(client, reg & 0xff, data);
|
|
}
|
|
|
|
static int reg_set(struct i2c_client *client, const u16 reg,
|
|
const u8 data, const u8 mask)
|
|
{
|
|
int ret;
|
|
|
|
ret = reg_read(client, reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
return reg_write(client, reg, (ret & ~mask) | (data & mask));
|
|
}
|
|
|
|
static int reg_write_multiple(struct i2c_client *client,
|
|
const struct rj54n1_reg_val *rv, const int n)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
ret = reg_write(client, rv->reg, rv->val);
|
|
if (ret < 0)
|
|
return ret;
|
|
rv++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rj54n1_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts))
|
|
return -EINVAL;
|
|
|
|
code->code = rj54n1_colour_fmts[code->index].code;
|
|
return 0;
|
|
}
|
|
|
|
static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
/* Switch between preview and still shot modes */
|
|
return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80);
|
|
}
|
|
|
|
static int rj54n1_set_rect(struct i2c_client *client,
|
|
u16 reg_x, u16 reg_y, u16 reg_xy,
|
|
u32 width, u32 height)
|
|
{
|
|
int ret;
|
|
|
|
ret = reg_write(client, reg_xy,
|
|
((width >> 4) & 0x70) |
|
|
((height >> 8) & 7));
|
|
|
|
if (!ret)
|
|
ret = reg_write(client, reg_x, width & 0xff);
|
|
if (!ret)
|
|
ret = reg_write(client, reg_y, height & 0xff);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Some commands, specifically certain initialisation sequences, require
|
|
* a commit operation.
|
|
*/
|
|
static int rj54n1_commit(struct i2c_client *client)
|
|
{
|
|
int ret = reg_write(client, RJ54N1_INIT_START, 1);
|
|
msleep(10);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_INIT_START, 0);
|
|
return ret;
|
|
}
|
|
|
|
static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
|
|
s32 *out_w, s32 *out_h);
|
|
|
|
static int rj54n1_set_selection(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_selection *sel)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
const struct v4l2_rect *rect = &sel->r;
|
|
int output_w, output_h, input_w = rect->width, input_h = rect->height;
|
|
int ret;
|
|
|
|
if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
|
|
sel->target != V4L2_SEL_TGT_CROP)
|
|
return -EINVAL;
|
|
|
|
/* arbitrary minimum width and height, edges unimportant */
|
|
v4l_bound_align_image(&input_w, 8, RJ54N1_MAX_WIDTH, 0,
|
|
&input_h, 8, RJ54N1_MAX_HEIGHT, 0, 0);
|
|
|
|
output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize;
|
|
output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize;
|
|
|
|
dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n",
|
|
input_w, input_h, rj54n1->resize, output_w, output_h);
|
|
|
|
ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
rj54n1->width = output_w;
|
|
rj54n1->height = output_h;
|
|
rj54n1->resize = ret;
|
|
rj54n1->rect.width = input_w;
|
|
rj54n1->rect.height = input_h;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rj54n1_get_selection(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_selection *sel)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
|
|
if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
return -EINVAL;
|
|
|
|
switch (sel->target) {
|
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
|
sel->r.left = RJ54N1_COLUMN_SKIP;
|
|
sel->r.top = RJ54N1_ROW_SKIP;
|
|
sel->r.width = RJ54N1_MAX_WIDTH;
|
|
sel->r.height = RJ54N1_MAX_HEIGHT;
|
|
return 0;
|
|
case V4L2_SEL_TGT_CROP:
|
|
sel->r = rj54n1->rect;
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int rj54n1_get_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct v4l2_mbus_framefmt *mf = &format->format;
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
|
|
if (format->pad)
|
|
return -EINVAL;
|
|
|
|
mf->code = rj54n1->fmt->code;
|
|
mf->colorspace = rj54n1->fmt->colorspace;
|
|
mf->ycbcr_enc = V4L2_YCBCR_ENC_601;
|
|
mf->xfer_func = V4L2_XFER_FUNC_SRGB;
|
|
mf->quantization = V4L2_QUANTIZATION_DEFAULT;
|
|
mf->field = V4L2_FIELD_NONE;
|
|
mf->width = rj54n1->width;
|
|
mf->height = rj54n1->height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The actual geometry configuration routine. It scales the input window into
|
|
* the output one, updates the window sizes and returns an error or the resize
|
|
* coefficient on success. Note: we only use the "Fixed Scaling" on this camera.
|
|
*/
|
|
static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,
|
|
s32 *out_w, s32 *out_h)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
unsigned int skip, resize, input_w = *in_w, input_h = *in_h,
|
|
output_w = *out_w, output_h = *out_h;
|
|
u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom;
|
|
unsigned int peak, peak_50, peak_60;
|
|
int ret;
|
|
|
|
/*
|
|
* We have a problem with crops, where the window is larger than 512x384
|
|
* and output window is larger than a half of the input one. In this
|
|
* case we have to either reduce the input window to equal or below
|
|
* 512x384 or the output window to equal or below 1/2 of the input.
|
|
*/
|
|
if (output_w > max(512U, input_w / 2)) {
|
|
if (2 * output_w > RJ54N1_MAX_WIDTH) {
|
|
input_w = RJ54N1_MAX_WIDTH;
|
|
output_w = RJ54N1_MAX_WIDTH / 2;
|
|
} else {
|
|
input_w = output_w * 2;
|
|
}
|
|
|
|
dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n",
|
|
input_w, output_w);
|
|
}
|
|
|
|
if (output_h > max(384U, input_h / 2)) {
|
|
if (2 * output_h > RJ54N1_MAX_HEIGHT) {
|
|
input_h = RJ54N1_MAX_HEIGHT;
|
|
output_h = RJ54N1_MAX_HEIGHT / 2;
|
|
} else {
|
|
input_h = output_h * 2;
|
|
}
|
|
|
|
dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n",
|
|
input_h, output_h);
|
|
}
|
|
|
|
/* Idea: use the read mode for snapshots, handle separate geometries */
|
|
ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L,
|
|
RJ54N1_Y_OUTPUT_SIZE_S_L,
|
|
RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h);
|
|
if (!ret)
|
|
ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L,
|
|
RJ54N1_Y_OUTPUT_SIZE_P_L,
|
|
RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (output_w > input_w && output_h > input_h) {
|
|
input_w = output_w;
|
|
input_h = output_h;
|
|
|
|
resize = 1024;
|
|
} else {
|
|
unsigned int resize_x, resize_y;
|
|
resize_x = (input_w * 1024 + output_w / 2) / output_w;
|
|
resize_y = (input_h * 1024 + output_h / 2) / output_h;
|
|
|
|
/* We want max(resize_x, resize_y), check if it still fits */
|
|
if (resize_x > resize_y &&
|
|
(output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT)
|
|
resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) /
|
|
output_h;
|
|
else if (resize_y > resize_x &&
|
|
(output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH)
|
|
resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) /
|
|
output_w;
|
|
else
|
|
resize = max(resize_x, resize_y);
|
|
|
|
/* Prohibited value ranges */
|
|
switch (resize) {
|
|
case 2040 ... 2047:
|
|
resize = 2039;
|
|
break;
|
|
case 4080 ... 4095:
|
|
resize = 4079;
|
|
break;
|
|
case 8160 ... 8191:
|
|
resize = 8159;
|
|
break;
|
|
case 16320 ... 16384:
|
|
resize = 16319;
|
|
}
|
|
}
|
|
|
|
/* Set scaling */
|
|
ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* Configure a skipping bitmask. The sensor will select a skipping value
|
|
* among set bits automatically. This is very unclear in the datasheet
|
|
* too. I was told, in this register one enables all skipping values,
|
|
* that are required for a specific resize, and the camera selects
|
|
* automatically, which ones to use. But it is unclear how to identify,
|
|
* which cropping values are needed. Secondly, why don't we just set all
|
|
* bits and let the camera choose? Would it increase processing time and
|
|
* reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to
|
|
* improve the image quality or stability for larger frames (see comment
|
|
* above), but I didn't check the framerate.
|
|
*/
|
|
skip = min(resize / 1024, 15U);
|
|
|
|
inc_sel = 1 << skip;
|
|
|
|
if (inc_sel <= 2)
|
|
inc_sel = 0xc;
|
|
else if (resize & 1023 && skip < 15)
|
|
inc_sel |= 1 << (skip + 1);
|
|
|
|
ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8);
|
|
|
|
if (!rj54n1->auto_wb) {
|
|
/* Auto white balance window */
|
|
wb_left = output_w / 16;
|
|
wb_right = (3 * output_w / 4 - 3) / 4;
|
|
wb_top = output_h / 16;
|
|
wb_bottom = (3 * output_h / 4 - 3) / 4;
|
|
wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) |
|
|
((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1);
|
|
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom);
|
|
}
|
|
|
|
/* Antiflicker */
|
|
peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz /
|
|
10000;
|
|
peak_50 = peak / 6;
|
|
peak_60 = peak / 5;
|
|
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PEAK_H,
|
|
((peak_50 >> 4) & 0xf0) | (peak_60 >> 8));
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PEAK_50, peak_50);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PEAK_60, peak_60);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150);
|
|
|
|
/* Start resizing */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
|
|
RESIZE_HOLD_SEL | RESIZE_GO | 1);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Constant taken from manufacturer's example */
|
|
msleep(230);
|
|
|
|
ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*in_w = (output_w * resize + 512) / 1024;
|
|
*in_h = (output_h * resize + 512) / 1024;
|
|
*out_w = output_w;
|
|
*out_h = output_h;
|
|
|
|
dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n",
|
|
*in_w, *in_h, resize, output_w, output_h, skip);
|
|
|
|
return resize;
|
|
}
|
|
|
|
static int rj54n1_set_clock(struct i2c_client *client)
|
|
{
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
int ret;
|
|
|
|
/* Enable external clock */
|
|
ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY);
|
|
/* Leave stand-by. Note: use this when implementing suspend / resume */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK);
|
|
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PLL_L, PLL_L);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PLL_N, PLL_N);
|
|
|
|
/* TGCLK dividers */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RATIO_TG,
|
|
rj54n1->clk_div.ratio_tg);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RATIO_T,
|
|
rj54n1->clk_div.ratio_t);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RATIO_R,
|
|
rj54n1->clk_div.ratio_r);
|
|
|
|
/* Enable TGCLK & RAMP */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3);
|
|
|
|
/* Disable clock output */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_OCLK_DSP, 0);
|
|
|
|
/* Set divisors */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RATIO_OP,
|
|
rj54n1->clk_div.ratio_op);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RATIO_O,
|
|
rj54n1->clk_div.ratio_o);
|
|
|
|
/* Enable OCLK */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
|
|
|
|
/* Use PLL for Timing Generator, write 2 to reserved bits */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_TG_BYPASS, 2);
|
|
|
|
/* Take sensor out of reset */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESET_STANDBY,
|
|
E_EXCLK | SEN_RSTX);
|
|
/* Enable PLL */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_PLL_EN, 1);
|
|
|
|
/* Wait for PLL to stabilise */
|
|
msleep(10);
|
|
|
|
/* Enable clock to frequency divider */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_CLK_RST, 1);
|
|
|
|
if (!ret)
|
|
ret = reg_read(client, RJ54N1_CLK_RST);
|
|
if (ret != 1) {
|
|
dev_err(&client->dev,
|
|
"Resetting RJ54N1CB0C clock failed: %d!\n", ret);
|
|
return -EIO;
|
|
}
|
|
|
|
/* Start the PLL */
|
|
ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1);
|
|
|
|
/* Enable OCLK */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rj54n1_reg_init(struct i2c_client *client)
|
|
{
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
int ret = rj54n1_set_clock(client);
|
|
|
|
if (!ret)
|
|
ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7));
|
|
if (!ret)
|
|
ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10));
|
|
|
|
/* Set binning divisors */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4));
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf);
|
|
|
|
/* Switch to fixed resize mode */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESIZE_CONTROL,
|
|
RESIZE_HOLD_SEL | 1);
|
|
|
|
/* Set gain */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_Y_GAIN, 0x84);
|
|
|
|
/*
|
|
* Mirror the image back: default is upside down and left-to-right...
|
|
* Set manual preview / still shot switching
|
|
*/
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27);
|
|
|
|
if (!ret)
|
|
ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4));
|
|
|
|
/* Auto exposure area */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80);
|
|
/* Check current auto WB config */
|
|
if (!ret)
|
|
ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I);
|
|
if (ret >= 0) {
|
|
rj54n1->auto_wb = ret & 0x80;
|
|
ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5));
|
|
}
|
|
if (!ret)
|
|
ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8));
|
|
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESET_STANDBY,
|
|
E_EXCLK | DSP_RSTX | SEN_RSTX);
|
|
|
|
/* Commit init */
|
|
if (!ret)
|
|
ret = rj54n1_commit(client);
|
|
|
|
/* Take DSP, TG, sensor out of reset */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RESET_STANDBY,
|
|
E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX);
|
|
|
|
/* Start register update? Same register as 0x?FE in many bank_* sets */
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_FWFLG, 2);
|
|
|
|
/* Constant taken from manufacturer's example */
|
|
msleep(700);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rj54n1_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct v4l2_mbus_framefmt *mf = &format->format;
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
const struct rj54n1_datafmt *fmt;
|
|
int output_w, output_h, max_w, max_h,
|
|
input_w = rj54n1->rect.width, input_h = rj54n1->rect.height;
|
|
int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 ||
|
|
mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE ||
|
|
mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE ||
|
|
mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE ||
|
|
mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE;
|
|
int ret;
|
|
|
|
if (format->pad)
|
|
return -EINVAL;
|
|
|
|
dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",
|
|
__func__, mf->code, mf->width, mf->height);
|
|
|
|
fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
|
|
ARRAY_SIZE(rj54n1_colour_fmts));
|
|
if (!fmt) {
|
|
fmt = rj54n1->fmt;
|
|
mf->code = fmt->code;
|
|
}
|
|
|
|
mf->field = V4L2_FIELD_NONE;
|
|
mf->colorspace = fmt->colorspace;
|
|
|
|
v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align,
|
|
&mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0);
|
|
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
cfg->try_fmt = *mf;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Verify if the sensor has just been powered on. TODO: replace this
|
|
* with proper PM, when a suitable API is available.
|
|
*/
|
|
ret = reg_read(client, RJ54N1_RESET_STANDBY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!(ret & E_EXCLK)) {
|
|
ret = rj54n1_reg_init(client);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */
|
|
switch (mf->code) {
|
|
case MEDIA_BUS_FMT_YUYV8_2X8:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 0);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
|
|
break;
|
|
case MEDIA_BUS_FMT_YVYU8_2X8:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 0);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB565_2X8_LE:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB565_2X8_BE:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
|
|
break;
|
|
case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
|
|
break;
|
|
case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
|
|
break;
|
|
case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);
|
|
break;
|
|
case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 4);
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);
|
|
if (!ret)
|
|
ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);
|
|
break;
|
|
case MEDIA_BUS_FMT_SBGGR10_1X10:
|
|
ret = reg_write(client, RJ54N1_OUT_SEL, 5);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
/* Special case: a raw mode with 10 bits of data per clock tick */
|
|
if (!ret)
|
|
ret = reg_set(client, RJ54N1_OCLK_SEL_EN,
|
|
(mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, 2);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Supported scales 1:1 >= scale > 1:16 */
|
|
max_w = mf->width * (16 * 1024 - 1) / 1024;
|
|
if (input_w > max_w)
|
|
input_w = max_w;
|
|
max_h = mf->height * (16 * 1024 - 1) / 1024;
|
|
if (input_h > max_h)
|
|
input_h = max_h;
|
|
|
|
output_w = mf->width;
|
|
output_h = mf->height;
|
|
|
|
ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,
|
|
ARRAY_SIZE(rj54n1_colour_fmts));
|
|
|
|
rj54n1->fmt = fmt;
|
|
rj54n1->resize = ret;
|
|
rj54n1->rect.width = input_w;
|
|
rj54n1->rect.height = input_h;
|
|
rj54n1->width = output_w;
|
|
rj54n1->height = output_h;
|
|
|
|
mf->width = output_w;
|
|
mf->height = output_h;
|
|
mf->field = V4L2_FIELD_NONE;
|
|
mf->colorspace = fmt->colorspace;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int rj54n1_g_register(struct v4l2_subdev *sd,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (reg->reg < 0x400 || reg->reg > 0x1fff)
|
|
/* Registers > 0x0800 are only available from Sharp support */
|
|
return -EINVAL;
|
|
|
|
reg->size = 1;
|
|
reg->val = reg_read(client, reg->reg);
|
|
|
|
if (reg->val > 0xff)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rj54n1_s_register(struct v4l2_subdev *sd,
|
|
const struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (reg->reg < 0x400 || reg->reg > 0x1fff)
|
|
/* Registers >= 0x0800 are only available from Sharp support */
|
|
return -EINVAL;
|
|
|
|
if (reg_write(client, reg->reg, reg->val) < 0)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int rj54n1_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
|
|
if (on) {
|
|
if (rj54n1->pwup_gpio)
|
|
gpiod_set_value(rj54n1->pwup_gpio, 1);
|
|
if (rj54n1->enable_gpio)
|
|
gpiod_set_value(rj54n1->enable_gpio, 1);
|
|
|
|
msleep(1);
|
|
|
|
return clk_prepare_enable(rj54n1->clk);
|
|
}
|
|
|
|
clk_disable_unprepare(rj54n1->clk);
|
|
|
|
if (rj54n1->enable_gpio)
|
|
gpiod_set_value(rj54n1->enable_gpio, 0);
|
|
if (rj54n1->pwup_gpio)
|
|
gpiod_set_value(rj54n1->pwup_gpio, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl);
|
|
struct v4l2_subdev *sd = &rj54n1->subdev;
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int data;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VFLIP:
|
|
if (ctrl->val)
|
|
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1);
|
|
else
|
|
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1);
|
|
if (data < 0)
|
|
return -EIO;
|
|
return 0;
|
|
case V4L2_CID_HFLIP:
|
|
if (ctrl->val)
|
|
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2);
|
|
else
|
|
data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2);
|
|
if (data < 0)
|
|
return -EIO;
|
|
return 0;
|
|
case V4L2_CID_GAIN:
|
|
if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0)
|
|
return -EIO;
|
|
return 0;
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
/* Auto WB area - whole image */
|
|
if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7,
|
|
0x80) < 0)
|
|
return -EIO;
|
|
rj54n1->auto_wb = ctrl->val;
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = {
|
|
.s_ctrl = rj54n1_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = rj54n1_g_register,
|
|
.s_register = rj54n1_s_register,
|
|
#endif
|
|
.s_power = rj54n1_s_power,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = {
|
|
.s_stream = rj54n1_s_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = {
|
|
.enum_mbus_code = rj54n1_enum_mbus_code,
|
|
.get_selection = rj54n1_get_selection,
|
|
.set_selection = rj54n1_set_selection,
|
|
.get_fmt = rj54n1_get_fmt,
|
|
.set_fmt = rj54n1_set_fmt,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops rj54n1_subdev_ops = {
|
|
.core = &rj54n1_subdev_core_ops,
|
|
.video = &rj54n1_subdev_video_ops,
|
|
.pad = &rj54n1_subdev_pad_ops,
|
|
};
|
|
|
|
/*
|
|
* Interface active, can use i2c. If it fails, it can indeed mean, that
|
|
* this wasn't our capture interface, so, we wait for the right one
|
|
*/
|
|
static int rj54n1_video_probe(struct i2c_client *client,
|
|
struct rj54n1_pdata *priv)
|
|
{
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
int data1, data2;
|
|
int ret;
|
|
|
|
ret = rj54n1_s_power(&rj54n1->subdev, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Read out the chip version register */
|
|
data1 = reg_read(client, RJ54N1_DEV_CODE);
|
|
data2 = reg_read(client, RJ54N1_DEV_CODE2);
|
|
|
|
if (data1 != 0x51 || data2 != 0x10) {
|
|
ret = -ENODEV;
|
|
dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n",
|
|
data1, data2);
|
|
goto done;
|
|
}
|
|
|
|
/* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */
|
|
ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",
|
|
data1, data2);
|
|
|
|
ret = v4l2_ctrl_handler_setup(&rj54n1->hdl);
|
|
|
|
done:
|
|
rj54n1_s_power(&rj54n1->subdev, 0);
|
|
return ret;
|
|
}
|
|
|
|
static int rj54n1_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *did)
|
|
{
|
|
struct rj54n1 *rj54n1;
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
struct rj54n1_pdata *rj54n1_priv;
|
|
int ret;
|
|
|
|
if (!client->dev.platform_data) {
|
|
dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
rj54n1_priv = client->dev.platform_data;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
|
dev_warn(&adapter->dev,
|
|
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
|
|
return -EIO;
|
|
}
|
|
|
|
rj54n1 = devm_kzalloc(&client->dev, sizeof(struct rj54n1), GFP_KERNEL);
|
|
if (!rj54n1)
|
|
return -ENOMEM;
|
|
|
|
v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops);
|
|
v4l2_ctrl_handler_init(&rj54n1->hdl, 4);
|
|
v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
|
|
V4L2_CID_VFLIP, 0, 1, 1, 0);
|
|
v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
|
|
V4L2_CID_HFLIP, 0, 1, 1, 0);
|
|
v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
|
|
V4L2_CID_GAIN, 0, 127, 1, 66);
|
|
v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
|
|
V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
|
|
rj54n1->subdev.ctrl_handler = &rj54n1->hdl;
|
|
if (rj54n1->hdl.error)
|
|
return rj54n1->hdl.error;
|
|
|
|
rj54n1->clk_div = clk_div;
|
|
rj54n1->rect.left = RJ54N1_COLUMN_SKIP;
|
|
rj54n1->rect.top = RJ54N1_ROW_SKIP;
|
|
rj54n1->rect.width = RJ54N1_MAX_WIDTH;
|
|
rj54n1->rect.height = RJ54N1_MAX_HEIGHT;
|
|
rj54n1->width = RJ54N1_MAX_WIDTH;
|
|
rj54n1->height = RJ54N1_MAX_HEIGHT;
|
|
rj54n1->fmt = &rj54n1_colour_fmts[0];
|
|
rj54n1->resize = 1024;
|
|
rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
|
|
(clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
|
|
|
|
rj54n1->clk = clk_get(&client->dev, NULL);
|
|
if (IS_ERR(rj54n1->clk)) {
|
|
ret = PTR_ERR(rj54n1->clk);
|
|
goto err_free_ctrl;
|
|
}
|
|
|
|
rj54n1->pwup_gpio = gpiod_get_optional(&client->dev, "powerup",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(rj54n1->pwup_gpio)) {
|
|
dev_info(&client->dev, "Unable to get GPIO \"powerup\": %ld\n",
|
|
PTR_ERR(rj54n1->pwup_gpio));
|
|
ret = PTR_ERR(rj54n1->pwup_gpio);
|
|
goto err_clk_put;
|
|
}
|
|
|
|
rj54n1->enable_gpio = gpiod_get_optional(&client->dev, "enable",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(rj54n1->enable_gpio)) {
|
|
dev_info(&client->dev, "Unable to get GPIO \"enable\": %ld\n",
|
|
PTR_ERR(rj54n1->enable_gpio));
|
|
ret = PTR_ERR(rj54n1->enable_gpio);
|
|
goto err_gpio_put;
|
|
}
|
|
|
|
ret = rj54n1_video_probe(client, rj54n1_priv);
|
|
if (ret < 0)
|
|
goto err_gpio_put;
|
|
|
|
ret = v4l2_async_register_subdev(&rj54n1->subdev);
|
|
if (ret)
|
|
goto err_gpio_put;
|
|
|
|
return 0;
|
|
|
|
err_gpio_put:
|
|
if (rj54n1->enable_gpio)
|
|
gpiod_put(rj54n1->enable_gpio);
|
|
|
|
if (rj54n1->pwup_gpio)
|
|
gpiod_put(rj54n1->pwup_gpio);
|
|
|
|
err_clk_put:
|
|
clk_put(rj54n1->clk);
|
|
|
|
err_free_ctrl:
|
|
v4l2_ctrl_handler_free(&rj54n1->hdl);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rj54n1_remove(struct i2c_client *client)
|
|
{
|
|
struct rj54n1 *rj54n1 = to_rj54n1(client);
|
|
|
|
if (rj54n1->enable_gpio)
|
|
gpiod_put(rj54n1->enable_gpio);
|
|
if (rj54n1->pwup_gpio)
|
|
gpiod_put(rj54n1->pwup_gpio);
|
|
|
|
clk_put(rj54n1->clk);
|
|
v4l2_ctrl_handler_free(&rj54n1->hdl);
|
|
v4l2_async_unregister_subdev(&rj54n1->subdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id rj54n1_id[] = {
|
|
{ "rj54n1cb0c", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, rj54n1_id);
|
|
|
|
static struct i2c_driver rj54n1_i2c_driver = {
|
|
.driver = {
|
|
.name = "rj54n1cb0c",
|
|
},
|
|
.probe = rj54n1_probe,
|
|
.remove = rj54n1_remove,
|
|
.id_table = rj54n1_id,
|
|
};
|
|
|
|
module_i2c_driver(rj54n1_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");
|
|
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
|
|
MODULE_LICENSE("GPL v2");
|