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1434 lines
35 KiB
1434 lines
35 KiB
// 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 <[email protected]> |
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* |
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* Copyright (C) 2009, Guennadi Liakhovetski <[email protected]> |
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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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|
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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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|
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/* set bank */ |
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if (rj54n1->bank != reg >> 8) { |
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dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8); |
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ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8); |
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if (ret < 0) |
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return ret; |
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rj54n1->bank = reg >> 8; |
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} |
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return i2c_smbus_read_byte_data(client, reg & 0xff); |
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} |
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|
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static int reg_write(struct i2c_client *client, const u16 reg, |
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const u8 data) |
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{ |
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struct rj54n1 *rj54n1 = to_rj54n1(client); |
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int ret; |
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|
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/* set bank */ |
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if (rj54n1->bank != reg >> 8) { |
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dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8); |
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ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8); |
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if (ret < 0) |
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return ret; |
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rj54n1->bank = reg >> 8; |
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} |
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dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data); |
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return i2c_smbus_write_byte_data(client, reg & 0xff, data); |
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} |
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|
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static int reg_set(struct i2c_client *client, const u16 reg, |
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const u8 data, const u8 mask) |
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{ |
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int ret; |
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|
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ret = reg_read(client, reg); |
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if (ret < 0) |
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return ret; |
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return reg_write(client, reg, (ret & ~mask) | (data & mask)); |
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} |
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|
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static int reg_write_multiple(struct i2c_client *client, |
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const struct rj54n1_reg_val *rv, const int n) |
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{ |
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int i, ret; |
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|
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for (i = 0; i < n; i++) { |
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ret = reg_write(client, rv->reg, rv->val); |
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if (ret < 0) |
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return ret; |
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rv++; |
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} |
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|
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return 0; |
|
} |
|
|
|
static int rj54n1_enum_mbus_code(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_state *sd_state, |
|
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_state *sd_state, |
|
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_state *sd_state, |
|
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_state *sd_state, |
|
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_state *sd_state, |
|
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) { |
|
sd_state->pads->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 void 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); |
|
} |
|
|
|
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 <[email protected]>"); |
|
MODULE_LICENSE("GPL v2");
|
|
|