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458 lines
12 KiB
458 lines
12 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* saa7110 - Philips SAA7110(A) video decoder driver |
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* |
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* Copyright (C) 1998 Pauline Middelink <[email protected]> |
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* |
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* Copyright (C) 1999 Wolfgang Scherr <[email protected]> |
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* Copyright (C) 2000 Serguei Miridonov <[email protected]> |
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* - some corrections for Pinnacle Systems Inc. DC10plus card. |
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* |
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* Changes by Ronald Bultje <[email protected]> |
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* - moved over to linux>=2.4.x i2c protocol (1/1/2003) |
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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);*/ |
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} |
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/*saa7110_selmux(sd,0);*/ |
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/*determine_norm(sd);*/ |
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/* setup and implicit mode 0 select has been performed */ |
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return 0; |
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} |
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static int saa7110_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 saa7110 *decoder = to_saa7110(sd); |
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v4l2_device_unregister_subdev(sd); |
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v4l2_ctrl_handler_free(&decoder->hdl); |
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return 0; |
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} |
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/* ----------------------------------------------------------------------- */ |
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static const struct i2c_device_id saa7110_id[] = { |
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{ "saa7110", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, saa7110_id); |
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static struct i2c_driver saa7110_driver = { |
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.driver = { |
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.name = "saa7110", |
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}, |
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.probe = saa7110_probe, |
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.remove = saa7110_remove, |
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.id_table = saa7110_id, |
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}; |
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module_i2c_driver(saa7110_driver);
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