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465 lines
11 KiB
465 lines
11 KiB
/* |
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* adv7393 - ADV7393 Video Encoder Driver |
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* |
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* The encoder hardware does not support SECAM. |
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* |
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* Copyright (C) 2010-2012 ADVANSEE - http://www.advansee.com/ |
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* Benoît Thébaudeau <[email protected]> |
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* |
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* Based on ADV7343 driver, |
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* |
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* Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation version 2. |
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* |
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* This program is distributed .as is. WITHOUT ANY WARRANTY of any |
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* kind, whether express or implied; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/ctype.h> |
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#include <linux/slab.h> |
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#include <linux/i2c.h> |
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#include <linux/device.h> |
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#include <linux/delay.h> |
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#include <linux/module.h> |
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#include <linux/videodev2.h> |
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#include <linux/uaccess.h> |
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|
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#include <media/i2c/adv7393.h> |
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#include <media/v4l2-device.h> |
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#include <media/v4l2-ctrls.h> |
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|
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#include "adv7393_regs.h" |
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|
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MODULE_DESCRIPTION("ADV7393 video encoder driver"); |
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MODULE_LICENSE("GPL"); |
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|
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static bool debug; |
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module_param(debug, bool, 0644); |
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MODULE_PARM_DESC(debug, "Debug level 0-1"); |
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|
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struct adv7393_state { |
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struct v4l2_subdev sd; |
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struct v4l2_ctrl_handler hdl; |
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u8 reg00; |
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u8 reg01; |
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u8 reg02; |
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u8 reg35; |
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u8 reg80; |
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u8 reg82; |
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u32 output; |
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v4l2_std_id std; |
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}; |
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static inline struct adv7393_state *to_state(struct v4l2_subdev *sd) |
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{ |
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return container_of(sd, struct adv7393_state, sd); |
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} |
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static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) |
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{ |
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return &container_of(ctrl->handler, struct adv7393_state, hdl)->sd; |
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} |
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static inline int adv7393_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(sd); |
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return i2c_smbus_write_byte_data(client, reg, value); |
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} |
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static const u8 adv7393_init_reg_val[] = { |
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ADV7393_SOFT_RESET, ADV7393_SOFT_RESET_DEFAULT, |
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ADV7393_POWER_MODE_REG, ADV7393_POWER_MODE_REG_DEFAULT, |
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ADV7393_HD_MODE_REG1, ADV7393_HD_MODE_REG1_DEFAULT, |
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ADV7393_HD_MODE_REG2, ADV7393_HD_MODE_REG2_DEFAULT, |
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ADV7393_HD_MODE_REG3, ADV7393_HD_MODE_REG3_DEFAULT, |
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ADV7393_HD_MODE_REG4, ADV7393_HD_MODE_REG4_DEFAULT, |
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ADV7393_HD_MODE_REG5, ADV7393_HD_MODE_REG5_DEFAULT, |
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ADV7393_HD_MODE_REG6, ADV7393_HD_MODE_REG6_DEFAULT, |
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ADV7393_HD_MODE_REG7, ADV7393_HD_MODE_REG7_DEFAULT, |
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ADV7393_SD_MODE_REG1, ADV7393_SD_MODE_REG1_DEFAULT, |
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ADV7393_SD_MODE_REG2, ADV7393_SD_MODE_REG2_DEFAULT, |
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ADV7393_SD_MODE_REG3, ADV7393_SD_MODE_REG3_DEFAULT, |
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ADV7393_SD_MODE_REG4, ADV7393_SD_MODE_REG4_DEFAULT, |
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ADV7393_SD_MODE_REG5, ADV7393_SD_MODE_REG5_DEFAULT, |
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ADV7393_SD_MODE_REG6, ADV7393_SD_MODE_REG6_DEFAULT, |
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ADV7393_SD_MODE_REG7, ADV7393_SD_MODE_REG7_DEFAULT, |
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ADV7393_SD_MODE_REG8, ADV7393_SD_MODE_REG8_DEFAULT, |
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ADV7393_SD_TIMING_REG0, ADV7393_SD_TIMING_REG0_DEFAULT, |
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ADV7393_SD_HUE_ADJUST, ADV7393_SD_HUE_ADJUST_DEFAULT, |
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ADV7393_SD_CGMS_WSS0, ADV7393_SD_CGMS_WSS0_DEFAULT, |
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ADV7393_SD_BRIGHTNESS_WSS, ADV7393_SD_BRIGHTNESS_WSS_DEFAULT, |
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}; |
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/* |
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* 2^32 |
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* FSC(reg) = FSC (HZ) * -------- |
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* 27000000 |
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*/ |
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static const struct adv7393_std_info stdinfo[] = { |
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{ |
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/* FSC(Hz) = 4,433,618.75 Hz */ |
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SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443, |
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}, { |
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/* FSC(Hz) = 3,579,545.45 Hz */ |
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SD_STD_NTSC, 569408542, V4L2_STD_NTSC, |
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}, { |
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/* FSC(Hz) = 3,575,611.00 Hz */ |
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SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M, |
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}, { |
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/* FSC(Hz) = 3,582,056.00 Hz */ |
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SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc, |
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}, { |
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/* FSC(Hz) = 4,433,618.75 Hz */ |
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SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N, |
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}, { |
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/* FSC(Hz) = 4,433,618.75 Hz */ |
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SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60, |
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}, { |
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/* FSC(Hz) = 4,433,618.75 Hz */ |
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SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL, |
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}, |
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}; |
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static int adv7393_setstd(struct v4l2_subdev *sd, v4l2_std_id std) |
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{ |
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struct adv7393_state *state = to_state(sd); |
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const struct adv7393_std_info *std_info; |
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int num_std; |
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u8 reg; |
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u32 val; |
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int err = 0; |
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int i; |
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num_std = ARRAY_SIZE(stdinfo); |
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for (i = 0; i < num_std; i++) { |
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if (stdinfo[i].stdid & std) |
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break; |
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} |
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if (i == num_std) { |
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v4l2_dbg(1, debug, sd, |
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"Invalid std or std is not supported: %llx\n", |
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(unsigned long long)std); |
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return -EINVAL; |
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} |
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std_info = &stdinfo[i]; |
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/* Set the standard */ |
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val = state->reg80 & ~SD_STD_MASK; |
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val |= std_info->standard_val3; |
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err = adv7393_write(sd, ADV7393_SD_MODE_REG1, val); |
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if (err < 0) |
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goto setstd_exit; |
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state->reg80 = val; |
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/* Configure the input mode register */ |
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val = state->reg01 & ~INPUT_MODE_MASK; |
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val |= SD_INPUT_MODE; |
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err = adv7393_write(sd, ADV7393_MODE_SELECT_REG, val); |
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if (err < 0) |
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goto setstd_exit; |
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state->reg01 = val; |
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/* Program the sub carrier frequency registers */ |
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val = std_info->fsc_val; |
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for (reg = ADV7393_FSC_REG0; reg <= ADV7393_FSC_REG3; reg++) { |
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err = adv7393_write(sd, reg, val); |
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if (err < 0) |
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goto setstd_exit; |
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val >>= 8; |
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} |
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val = state->reg82; |
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/* Pedestal settings */ |
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if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443)) |
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val |= SD_PEDESTAL_EN; |
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else |
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val &= SD_PEDESTAL_DI; |
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err = adv7393_write(sd, ADV7393_SD_MODE_REG2, val); |
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if (err < 0) |
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goto setstd_exit; |
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state->reg82 = val; |
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setstd_exit: |
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if (err != 0) |
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v4l2_err(sd, "Error setting std, write failed\n"); |
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return err; |
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} |
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static int adv7393_setoutput(struct v4l2_subdev *sd, u32 output_type) |
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{ |
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struct adv7393_state *state = to_state(sd); |
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u8 val; |
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int err = 0; |
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if (output_type > ADV7393_SVIDEO_ID) { |
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v4l2_dbg(1, debug, sd, |
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"Invalid output type or output type not supported:%d\n", |
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output_type); |
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return -EINVAL; |
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} |
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/* Enable Appropriate DAC */ |
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val = state->reg00 & 0x03; |
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if (output_type == ADV7393_COMPOSITE_ID) |
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val |= ADV7393_COMPOSITE_POWER_VALUE; |
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else if (output_type == ADV7393_COMPONENT_ID) |
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val |= ADV7393_COMPONENT_POWER_VALUE; |
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else |
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val |= ADV7393_SVIDEO_POWER_VALUE; |
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err = adv7393_write(sd, ADV7393_POWER_MODE_REG, val); |
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if (err < 0) |
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goto setoutput_exit; |
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state->reg00 = val; |
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/* Enable YUV output */ |
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val = state->reg02 | YUV_OUTPUT_SELECT; |
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err = adv7393_write(sd, ADV7393_MODE_REG0, val); |
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if (err < 0) |
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goto setoutput_exit; |
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state->reg02 = val; |
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/* configure SD DAC Output 1 bit */ |
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val = state->reg82; |
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if (output_type == ADV7393_COMPONENT_ID) |
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val &= SD_DAC_OUT1_DI; |
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else |
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val |= SD_DAC_OUT1_EN; |
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err = adv7393_write(sd, ADV7393_SD_MODE_REG2, val); |
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if (err < 0) |
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goto setoutput_exit; |
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state->reg82 = val; |
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/* configure ED/HD Color DAC Swap bit to zero */ |
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val = state->reg35 & HD_DAC_SWAP_DI; |
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err = adv7393_write(sd, ADV7393_HD_MODE_REG6, val); |
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if (err < 0) |
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goto setoutput_exit; |
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state->reg35 = val; |
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setoutput_exit: |
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if (err != 0) |
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v4l2_err(sd, "Error setting output, write failed\n"); |
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return err; |
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} |
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static int adv7393_log_status(struct v4l2_subdev *sd) |
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{ |
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struct adv7393_state *state = to_state(sd); |
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v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std); |
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v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" : |
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((state->output == 1) ? "Component" : "S-Video")); |
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return 0; |
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} |
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static int adv7393_s_ctrl(struct v4l2_ctrl *ctrl) |
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{ |
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struct v4l2_subdev *sd = to_sd(ctrl); |
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switch (ctrl->id) { |
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case V4L2_CID_BRIGHTNESS: |
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return adv7393_write(sd, ADV7393_SD_BRIGHTNESS_WSS, |
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ctrl->val & SD_BRIGHTNESS_VALUE_MASK); |
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case V4L2_CID_HUE: |
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return adv7393_write(sd, ADV7393_SD_HUE_ADJUST, |
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ctrl->val - ADV7393_HUE_MIN); |
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case V4L2_CID_GAIN: |
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return adv7393_write(sd, ADV7393_DAC123_OUTPUT_LEVEL, |
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ctrl->val); |
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} |
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return -EINVAL; |
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} |
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static const struct v4l2_ctrl_ops adv7393_ctrl_ops = { |
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.s_ctrl = adv7393_s_ctrl, |
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}; |
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static const struct v4l2_subdev_core_ops adv7393_core_ops = { |
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.log_status = adv7393_log_status, |
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}; |
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static int adv7393_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
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{ |
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struct adv7393_state *state = to_state(sd); |
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int err = 0; |
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if (state->std == std) |
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return 0; |
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err = adv7393_setstd(sd, std); |
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if (!err) |
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state->std = std; |
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return err; |
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} |
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static int adv7393_s_routing(struct v4l2_subdev *sd, |
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u32 input, u32 output, u32 config) |
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{ |
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struct adv7393_state *state = to_state(sd); |
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int err = 0; |
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if (state->output == output) |
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return 0; |
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err = adv7393_setoutput(sd, output); |
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if (!err) |
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state->output = output; |
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return err; |
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} |
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static const struct v4l2_subdev_video_ops adv7393_video_ops = { |
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.s_std_output = adv7393_s_std_output, |
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.s_routing = adv7393_s_routing, |
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}; |
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static const struct v4l2_subdev_ops adv7393_ops = { |
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.core = &adv7393_core_ops, |
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.video = &adv7393_video_ops, |
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}; |
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static int adv7393_initialize(struct v4l2_subdev *sd) |
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{ |
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struct adv7393_state *state = to_state(sd); |
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int err = 0; |
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int i; |
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for (i = 0; i < ARRAY_SIZE(adv7393_init_reg_val); i += 2) { |
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err = adv7393_write(sd, adv7393_init_reg_val[i], |
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adv7393_init_reg_val[i+1]); |
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if (err) { |
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v4l2_err(sd, "Error initializing\n"); |
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return err; |
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} |
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} |
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/* Configure for default video standard */ |
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err = adv7393_setoutput(sd, state->output); |
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if (err < 0) { |
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v4l2_err(sd, "Error setting output during init\n"); |
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return -EINVAL; |
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} |
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err = adv7393_setstd(sd, state->std); |
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if (err < 0) { |
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v4l2_err(sd, "Error setting std during init\n"); |
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return -EINVAL; |
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} |
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return err; |
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} |
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static int adv7393_probe(struct i2c_client *client, |
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const struct i2c_device_id *id) |
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{ |
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struct adv7393_state *state; |
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int err; |
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
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return -ENODEV; |
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v4l_info(client, "chip found @ 0x%x (%s)\n", |
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client->addr << 1, client->adapter->name); |
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state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
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if (state == NULL) |
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return -ENOMEM; |
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state->reg00 = ADV7393_POWER_MODE_REG_DEFAULT; |
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state->reg01 = 0x00; |
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state->reg02 = 0x20; |
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state->reg35 = ADV7393_HD_MODE_REG6_DEFAULT; |
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state->reg80 = ADV7393_SD_MODE_REG1_DEFAULT; |
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state->reg82 = ADV7393_SD_MODE_REG2_DEFAULT; |
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state->output = ADV7393_COMPOSITE_ID; |
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state->std = V4L2_STD_NTSC; |
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v4l2_i2c_subdev_init(&state->sd, client, &adv7393_ops); |
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v4l2_ctrl_handler_init(&state->hdl, 3); |
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v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, |
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V4L2_CID_BRIGHTNESS, ADV7393_BRIGHTNESS_MIN, |
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ADV7393_BRIGHTNESS_MAX, 1, |
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ADV7393_BRIGHTNESS_DEF); |
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v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, |
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V4L2_CID_HUE, ADV7393_HUE_MIN, |
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ADV7393_HUE_MAX, 1, |
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ADV7393_HUE_DEF); |
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v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, |
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V4L2_CID_GAIN, ADV7393_GAIN_MIN, |
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ADV7393_GAIN_MAX, 1, |
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ADV7393_GAIN_DEF); |
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state->sd.ctrl_handler = &state->hdl; |
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if (state->hdl.error) { |
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int err = state->hdl.error; |
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v4l2_ctrl_handler_free(&state->hdl); |
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return err; |
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} |
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v4l2_ctrl_handler_setup(&state->hdl); |
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err = adv7393_initialize(&state->sd); |
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if (err) |
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v4l2_ctrl_handler_free(&state->hdl); |
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return err; |
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} |
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static int adv7393_remove(struct i2c_client *client) |
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{ |
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struct v4l2_subdev *sd = i2c_get_clientdata(client); |
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struct adv7393_state *state = to_state(sd); |
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v4l2_device_unregister_subdev(sd); |
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v4l2_ctrl_handler_free(&state->hdl); |
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return 0; |
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} |
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static const struct i2c_device_id adv7393_id[] = { |
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{"adv7393", 0}, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(i2c, adv7393_id); |
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static struct i2c_driver adv7393_driver = { |
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.driver = { |
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.name = "adv7393", |
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}, |
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.probe = adv7393_probe, |
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.remove = adv7393_remove, |
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.id_table = adv7393_id, |
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}; |
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module_i2c_driver(adv7393_driver);
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