534 lines
12 KiB
C
534 lines
12 KiB
C
/*
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* adv7343 - ADV7343 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) 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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#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/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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#include <media/adv7343.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-chip-ident.h>
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#include "adv7343_regs.h"
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MODULE_DESCRIPTION("ADV7343 video encoder driver");
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MODULE_LICENSE("GPL");
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level 0-1");
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struct adv7343_state {
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struct v4l2_subdev sd;
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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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int bright;
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int hue;
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int gain;
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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 adv7343_state *to_state(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct adv7343_state, sd);
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}
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static inline int adv7343_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 adv7343_init_reg_val[] = {
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ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
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ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
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ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
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ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
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ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
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ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
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ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
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ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
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ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
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ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
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ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
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ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
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ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
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ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
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ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
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ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
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ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
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ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
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ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
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ADV7343_SD_BRIGHTNESS_WSS, ADV7343_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 adv7343_std_info stdinfo[] = {
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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 */
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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_BDGHI, 705268427, V4L2_STD_PAL,
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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) = 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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};
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static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
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{
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struct adv7343_state *state = to_state(sd);
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struct adv7343_std_info *std_info;
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int output_idx, num_std;
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char *fsc_ptr;
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u8 reg, val;
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int err = 0;
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int i = 0;
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output_idx = state->output;
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std_info = (struct adv7343_std_info *)stdinfo;
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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 (std_info[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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/* Set the standard */
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val = state->reg80 & (~(SD_STD_MASK));
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val |= std_info[i].standard_val3;
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err = adv7343_write(sd, ADV7343_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 & (~((u8) INPUT_MODE_MASK));
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val |= SD_INPUT_MODE;
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err = adv7343_write(sd, ADV7343_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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fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
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reg = ADV7343_FSC_REG0;
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for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
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err = adv7343_write(sd, reg, *fsc_ptr);
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if (err < 0)
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goto setstd_exit;
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}
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val = state->reg80;
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/* Filter settings */
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if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
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val &= 0x03;
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else if (std & ~V4L2_STD_SECAM)
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val |= 0x04;
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err = adv7343_write(sd, ADV7343_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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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 adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
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{
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struct adv7343_state *state = to_state(sd);
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unsigned char val;
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int err = 0;
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if (output_type > ADV7343_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 == ADV7343_COMPOSITE_ID)
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val |= ADV7343_COMPOSITE_POWER_VALUE;
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else if (output_type == ADV7343_COMPONENT_ID)
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val |= ADV7343_COMPONENT_POWER_VALUE;
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else
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val |= ADV7343_SVIDEO_POWER_VALUE;
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err = adv7343_write(sd, ADV7343_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 = adv7343_write(sd, ADV7343_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 2 and SD DAC Output 1 bit to zero */
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val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
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err = adv7343_write(sd, ADV7343_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 and ED/HD RGB Input Enable bit to
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* zero */
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val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
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err = adv7343_write(sd, ADV7343_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 adv7343_log_status(struct v4l2_subdev *sd)
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{
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struct adv7343_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 adv7343_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
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{
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switch (qc->id) {
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case V4L2_CID_BRIGHTNESS:
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return v4l2_ctrl_query_fill(qc, ADV7343_BRIGHTNESS_MIN,
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ADV7343_BRIGHTNESS_MAX, 1,
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ADV7343_BRIGHTNESS_DEF);
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case V4L2_CID_HUE:
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return v4l2_ctrl_query_fill(qc, ADV7343_HUE_MIN,
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ADV7343_HUE_MAX, 1 ,
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ADV7343_HUE_DEF);
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case V4L2_CID_GAIN:
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return v4l2_ctrl_query_fill(qc, ADV7343_GAIN_MIN,
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ADV7343_GAIN_MAX, 1,
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ADV7343_GAIN_DEF);
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default:
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break;
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}
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return 0;
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}
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static int adv7343_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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{
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struct adv7343_state *state = to_state(sd);
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int err = 0;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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if (ctrl->value < ADV7343_BRIGHTNESS_MIN ||
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ctrl->value > ADV7343_BRIGHTNESS_MAX) {
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v4l2_dbg(1, debug, sd,
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"invalid brightness settings %d\n",
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ctrl->value);
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return -ERANGE;
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}
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state->bright = ctrl->value;
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err = adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
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state->bright);
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break;
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case V4L2_CID_HUE:
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if (ctrl->value < ADV7343_HUE_MIN ||
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ctrl->value > ADV7343_HUE_MAX) {
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v4l2_dbg(1, debug, sd, "invalid hue settings %d\n",
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ctrl->value);
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return -ERANGE;
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}
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state->hue = ctrl->value;
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err = adv7343_write(sd, ADV7343_SD_HUE_REG, state->hue);
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break;
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case V4L2_CID_GAIN:
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if (ctrl->value < ADV7343_GAIN_MIN ||
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ctrl->value > ADV7343_GAIN_MAX) {
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v4l2_dbg(1, debug, sd, "invalid gain settings %d\n",
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ctrl->value);
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return -ERANGE;
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}
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if ((ctrl->value > POSITIVE_GAIN_MAX) &&
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(ctrl->value < NEGATIVE_GAIN_MIN)) {
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v4l2_dbg(1, debug, sd,
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"gain settings not within the specified range\n");
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return -ERANGE;
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}
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state->gain = ctrl->value;
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err = adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, state->gain);
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break;
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default:
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return -EINVAL;
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}
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if (err < 0)
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v4l2_err(sd, "Failed to set the encoder controls\n");
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return err;
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}
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static int adv7343_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
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{
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struct adv7343_state *state = to_state(sd);
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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ctrl->value = state->bright;
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break;
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case V4L2_CID_HUE:
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ctrl->value = state->hue;
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break;
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case V4L2_CID_GAIN:
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ctrl->value = state->gain;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
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struct v4l2_dbg_chip_ident *chip)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
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}
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static const struct v4l2_subdev_core_ops adv7343_core_ops = {
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.log_status = adv7343_log_status,
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.g_chip_ident = adv7343_g_chip_ident,
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.g_ctrl = adv7343_g_ctrl,
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.s_ctrl = adv7343_s_ctrl,
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.queryctrl = adv7343_queryctrl,
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};
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static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
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{
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struct adv7343_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 = adv7343_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 adv7343_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 adv7343_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 = adv7343_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 adv7343_video_ops = {
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.s_std_output = adv7343_s_std_output,
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.s_routing = adv7343_s_routing,
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};
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static const struct v4l2_subdev_ops adv7343_ops = {
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.core = &adv7343_core_ops,
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.video = &adv7343_video_ops,
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};
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static int adv7343_initialize(struct v4l2_subdev *sd)
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{
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struct adv7343_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(adv7343_init_reg_val); i += 2) {
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err = adv7343_write(sd, adv7343_init_reg_val[i],
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adv7343_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 = adv7343_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 = adv7343_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 adv7343_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct adv7343_state *state;
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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 = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
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if (state == NULL)
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return -ENOMEM;
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state->reg00 = 0x80;
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state->reg01 = 0x00;
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state->reg02 = 0x20;
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state->reg35 = 0x00;
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state->reg80 = ADV7343_SD_MODE_REG1_DEFAULT;
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state->reg82 = ADV7343_SD_MODE_REG2_DEFAULT;
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state->output = ADV7343_COMPOSITE_ID;
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state->std = V4L2_STD_NTSC;
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v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
|
|
return adv7343_initialize(&state->sd);
|
|
}
|
|
|
|
static int adv7343_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
kfree(to_state(sd));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id adv7343_id[] = {
|
|
{"adv7343", 0},
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, adv7343_id);
|
|
|
|
static struct i2c_driver adv7343_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "adv7343",
|
|
},
|
|
.probe = adv7343_probe,
|
|
.remove = adv7343_remove,
|
|
.id_table = adv7343_id,
|
|
};
|
|
|
|
static __init int init_adv7343(void)
|
|
{
|
|
return i2c_add_driver(&adv7343_driver);
|
|
}
|
|
|
|
static __exit void exit_adv7343(void)
|
|
{
|
|
i2c_del_driver(&adv7343_driver);
|
|
}
|
|
|
|
module_init(init_adv7343);
|
|
module_exit(exit_adv7343);
|