468 lines
13 KiB
C
468 lines
13 KiB
C
/*
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* saa7110 - Philips SAA7110(A) video decoder driver
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*
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* Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
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*
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* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
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* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
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* - some corrections for Pinnacle Systems Inc. DC10plus card.
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*
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* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
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* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* 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/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/uaccess.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ctrls.h>
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MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
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MODULE_AUTHOR("Pauline Middelink");
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MODULE_LICENSE("GPL");
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static int debug;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
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#define SAA7110_MAX_OUTPUT 1 /* 1 YUV */
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#define SAA7110_NR_REG 0x35
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struct saa7110 {
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struct v4l2_subdev sd;
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struct v4l2_ctrl_handler hdl;
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u8 reg[SAA7110_NR_REG];
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v4l2_std_id norm;
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int input;
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int enable;
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wait_queue_head_t wq;
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};
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static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct saa7110, 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 saa7110, hdl)->sd;
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}
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/* ----------------------------------------------------------------------- */
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/* I2C support functions */
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/* ----------------------------------------------------------------------- */
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static int saa7110_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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struct saa7110 *decoder = to_saa7110(sd);
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decoder->reg[reg] = value;
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct saa7110 *decoder = to_saa7110(sd);
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int ret = -1;
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u8 reg = *data; /* first register to write to */
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/* Sanity check */
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if (reg + (len - 1) > SAA7110_NR_REG)
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return ret;
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/* the saa7110 has an autoincrement function, use it if
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* the adapter understands raw I2C */
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if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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ret = i2c_master_send(client, data, len);
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/* Cache the written data */
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memcpy(decoder->reg + reg, data + 1, len - 1);
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} else {
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for (++data, --len; len; len--) {
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ret = saa7110_write(sd, reg++, *data++);
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if (ret < 0)
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break;
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}
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}
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return ret;
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}
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static inline int saa7110_read(struct v4l2_subdev *sd)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return i2c_smbus_read_byte(client);
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}
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/* ----------------------------------------------------------------------- */
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/* SAA7110 functions */
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/* ----------------------------------------------------------------------- */
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#define FRESP_06H_COMPST 0x03 /*0x13*/
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#define FRESP_06H_SVIDEO 0x83 /*0xC0*/
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static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
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{
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static const unsigned char modes[9][8] = {
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/* mode 0 */
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{FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
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0x44, 0x75, 0x16},
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/* mode 1 */
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{FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
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0x44, 0x75, 0x16},
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/* mode 2 */
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{FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
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0x60, 0xB5, 0x05},
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/* mode 3 */
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{FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
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0x60, 0xB5, 0x05},
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/* mode 4 */
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{FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
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0x60, 0xB5, 0x03},
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/* mode 5 */
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{FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
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0x60, 0xB5, 0x03},
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/* mode 6 */
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{FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
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0x44, 0x75, 0x12},
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/* mode 7 */
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{FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
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0x60, 0xB5, 0x14},
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/* mode 8 */
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{FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
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0x44, 0x75, 0x21}
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};
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struct saa7110 *decoder = to_saa7110(sd);
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const unsigned char *ptr = modes[chan];
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saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */
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saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */
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saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */
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saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */
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saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */
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saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */
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saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */
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saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */
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decoder->input = chan;
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return 0;
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}
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static const unsigned char initseq[1 + SAA7110_NR_REG] = {
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0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
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/* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
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/* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
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/* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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/* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
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/* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
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/* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
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};
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static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
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{
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DEFINE_WAIT(wait);
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struct saa7110 *decoder = to_saa7110(sd);
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int status;
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/* mode changed, start automatic detection */
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saa7110_write_block(sd, initseq, sizeof(initseq));
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saa7110_selmux(sd, decoder->input);
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prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
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schedule_timeout(msecs_to_jiffies(250));
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finish_wait(&decoder->wq, &wait);
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status = saa7110_read(sd);
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if (status & 0x40) {
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v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
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return V4L2_STD_UNKNOWN;
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}
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if ((status & 3) == 0) {
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saa7110_write(sd, 0x06, 0x83);
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if (status & 0x20) {
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v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
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/*saa7110_write(sd,0x2E,0x81);*/
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return V4L2_STD_NTSC;
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}
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v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
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/*saa7110_write(sd,0x2E,0x9A);*/
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return V4L2_STD_PAL;
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}
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/*saa7110_write(sd,0x06,0x03);*/
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if (status & 0x20) { /* 60Hz */
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v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
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saa7110_write(sd, 0x0D, 0x86);
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saa7110_write(sd, 0x0F, 0x50);
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saa7110_write(sd, 0x11, 0x2C);
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/*saa7110_write(sd,0x2E,0x81);*/
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return V4L2_STD_NTSC;
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}
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/* 50Hz -> PAL/SECAM */
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saa7110_write(sd, 0x0D, 0x86);
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saa7110_write(sd, 0x0F, 0x10);
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saa7110_write(sd, 0x11, 0x59);
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/*saa7110_write(sd,0x2E,0x9A);*/
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prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
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schedule_timeout(msecs_to_jiffies(250));
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finish_wait(&decoder->wq, &wait);
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status = saa7110_read(sd);
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if ((status & 0x03) == 0x01) {
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v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
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saa7110_write(sd, 0x0D, 0x87);
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return V4L2_STD_SECAM;
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}
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v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
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return V4L2_STD_PAL;
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}
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static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
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{
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struct saa7110 *decoder = to_saa7110(sd);
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int res = V4L2_IN_ST_NO_SIGNAL;
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int status = saa7110_read(sd);
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v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
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status, (unsigned long long)decoder->norm);
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if (!(status & 0x40))
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res = 0;
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if (!(status & 0x03))
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res |= V4L2_IN_ST_NO_COLOR;
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*pstatus = res;
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return 0;
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}
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static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
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{
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*std &= determine_norm(sd);
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return 0;
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}
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static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
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{
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struct saa7110 *decoder = to_saa7110(sd);
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if (decoder->norm != std) {
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decoder->norm = std;
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/*saa7110_write(sd, 0x06, 0x03);*/
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if (std & V4L2_STD_NTSC) {
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saa7110_write(sd, 0x0D, 0x86);
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saa7110_write(sd, 0x0F, 0x50);
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saa7110_write(sd, 0x11, 0x2C);
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/*saa7110_write(sd, 0x2E, 0x81);*/
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v4l2_dbg(1, debug, sd, "switched to NTSC\n");
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} else if (std & V4L2_STD_PAL) {
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saa7110_write(sd, 0x0D, 0x86);
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saa7110_write(sd, 0x0F, 0x10);
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saa7110_write(sd, 0x11, 0x59);
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/*saa7110_write(sd, 0x2E, 0x9A);*/
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v4l2_dbg(1, debug, sd, "switched to PAL\n");
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} else if (std & V4L2_STD_SECAM) {
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saa7110_write(sd, 0x0D, 0x87);
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saa7110_write(sd, 0x0F, 0x10);
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saa7110_write(sd, 0x11, 0x59);
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/*saa7110_write(sd, 0x2E, 0x9A);*/
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v4l2_dbg(1, debug, sd, "switched to SECAM\n");
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} else {
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return -EINVAL;
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}
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}
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return 0;
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}
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static int saa7110_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 saa7110 *decoder = to_saa7110(sd);
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if (input >= SAA7110_MAX_INPUT) {
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v4l2_dbg(1, debug, sd, "input=%d not available\n", input);
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return -EINVAL;
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}
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if (decoder->input != input) {
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saa7110_selmux(sd, input);
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v4l2_dbg(1, debug, sd, "switched to input=%d\n", input);
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}
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return 0;
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}
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static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct saa7110 *decoder = to_saa7110(sd);
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if (decoder->enable != enable) {
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decoder->enable = enable;
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saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
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v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
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}
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return 0;
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}
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static int saa7110_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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saa7110_write(sd, 0x19, ctrl->val);
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break;
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case V4L2_CID_CONTRAST:
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saa7110_write(sd, 0x13, ctrl->val);
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break;
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case V4L2_CID_SATURATION:
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saa7110_write(sd, 0x12, ctrl->val);
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break;
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case V4L2_CID_HUE:
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saa7110_write(sd, 0x07, ctrl->val);
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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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/* ----------------------------------------------------------------------- */
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static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
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.s_ctrl = saa7110_s_ctrl,
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};
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static const struct v4l2_subdev_video_ops saa7110_video_ops = {
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.s_std = saa7110_s_std,
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.s_routing = saa7110_s_routing,
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.s_stream = saa7110_s_stream,
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.querystd = saa7110_querystd,
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.g_input_status = saa7110_g_input_status,
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};
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static const struct v4l2_subdev_ops saa7110_ops = {
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.video = &saa7110_video_ops,
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};
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/* ----------------------------------------------------------------------- */
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static int saa7110_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct saa7110 *decoder;
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struct v4l2_subdev *sd;
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int rv;
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/* Check if the adapter supports the needed features */
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_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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decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
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if (!decoder)
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return -ENOMEM;
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sd = &decoder->sd;
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v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
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decoder->norm = V4L2_STD_PAL;
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decoder->input = 0;
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decoder->enable = 1;
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v4l2_ctrl_handler_init(&decoder->hdl, 2);
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v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
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V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
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v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
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V4L2_CID_CONTRAST, 0, 127, 1, 64);
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v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
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V4L2_CID_SATURATION, 0, 127, 1, 64);
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v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
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V4L2_CID_HUE, -128, 127, 1, 0);
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sd->ctrl_handler = &decoder->hdl;
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if (decoder->hdl.error) {
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int err = decoder->hdl.error;
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v4l2_ctrl_handler_free(&decoder->hdl);
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return err;
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}
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v4l2_ctrl_handler_setup(&decoder->hdl);
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init_waitqueue_head(&decoder->wq);
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rv = saa7110_write_block(sd, initseq, sizeof(initseq));
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if (rv < 0) {
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v4l2_dbg(1, debug, sd, "init status %d\n", rv);
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} else {
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int ver, status;
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saa7110_write(sd, 0x21, 0x10);
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saa7110_write(sd, 0x0e, 0x18);
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saa7110_write(sd, 0x0D, 0x04);
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ver = saa7110_read(sd);
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saa7110_write(sd, 0x0D, 0x06);
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/*mdelay(150);*/
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status = saa7110_read(sd);
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v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
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ver, status);
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saa7110_write(sd, 0x0D, 0x86);
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saa7110_write(sd, 0x0F, 0x10);
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saa7110_write(sd, 0x11, 0x59);
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/*saa7110_write(sd, 0x2E, 0x9A);*/
|
|
}
|
|
|
|
/*saa7110_selmux(sd,0);*/
|
|
/*determine_norm(sd);*/
|
|
/* setup and implicit mode 0 select has been performed */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int saa7110_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct saa7110 *decoder = to_saa7110(sd);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(&decoder->hdl);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct i2c_device_id saa7110_id[] = {
|
|
{ "saa7110", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, saa7110_id);
|
|
|
|
static struct i2c_driver saa7110_driver = {
|
|
.driver = {
|
|
.name = "saa7110",
|
|
},
|
|
.probe = saa7110_probe,
|
|
.remove = saa7110_remove,
|
|
.id_table = saa7110_id,
|
|
};
|
|
|
|
module_i2c_driver(saa7110_driver);
|