aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/media/vino/saa7191.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/media/vino/saa7191.c')
-rw-r--r--drivers/staging/media/vino/saa7191.c649
1 files changed, 0 insertions, 649 deletions
diff --git a/drivers/staging/media/vino/saa7191.c b/drivers/staging/media/vino/saa7191.c
deleted file mode 100644
index 8e96992..0000000
--- a/drivers/staging/media/vino/saa7191.c
+++ /dev/null
@@ -1,649 +0,0 @@
-/*
- * saa7191.c - Philips SAA7191 video decoder driver
- *
- * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
- * Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-
-#include <linux/videodev2.h>
-#include <linux/i2c.h>
-#include <media/v4l2-device.h>
-
-#include "saa7191.h"
-
-#define SAA7191_MODULE_VERSION "0.0.5"
-
-MODULE_DESCRIPTION("Philips SAA7191 video decoder driver");
-MODULE_VERSION(SAA7191_MODULE_VERSION);
-MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
-MODULE_LICENSE("GPL");
-
-
-// #define SAA7191_DEBUG
-
-#ifdef SAA7191_DEBUG
-#define dprintk(x...) printk("SAA7191: " x);
-#else
-#define dprintk(x...)
-#endif
-
-#define SAA7191_SYNC_COUNT 30
-#define SAA7191_SYNC_DELAY 100 /* milliseconds */
-
-struct saa7191 {
- struct v4l2_subdev sd;
-
- /* the register values are stored here as the actual
- * I2C-registers are write-only */
- u8 reg[25];
-
- int input;
- v4l2_std_id norm;
-};
-
-static inline struct saa7191 *to_saa7191(struct v4l2_subdev *sd)
-{
- return container_of(sd, struct saa7191, sd);
-}
-
-static const u8 initseq[] = {
- 0, /* Subaddress */
-
- 0x50, /* (0x50) SAA7191_REG_IDEL */
-
- /* 50 Hz signal timing */
- 0x30, /* (0x30) SAA7191_REG_HSYB */
- 0x00, /* (0x00) SAA7191_REG_HSYS */
- 0xe8, /* (0xe8) SAA7191_REG_HCLB */
- 0xb6, /* (0xb6) SAA7191_REG_HCLS */
- 0xf4, /* (0xf4) SAA7191_REG_HPHI */
-
- /* control */
- SAA7191_LUMA_APER_1, /* (0x01) SAA7191_REG_LUMA - CVBS mode */
- 0x00, /* (0x00) SAA7191_REG_HUEC */
- 0xf8, /* (0xf8) SAA7191_REG_CKTQ */
- 0xf8, /* (0xf8) SAA7191_REG_CKTS */
- 0x90, /* (0x90) SAA7191_REG_PLSE */
- 0x90, /* (0x90) SAA7191_REG_SESE */
- 0x00, /* (0x00) SAA7191_REG_GAIN */
- SAA7191_STDC_NFEN | SAA7191_STDC_HRMV, /* (0x0c) SAA7191_REG_STDC
- * - not SECAM,
- * slow time constant */
- SAA7191_IOCK_OEDC | SAA7191_IOCK_OEHS | SAA7191_IOCK_OEVS
- | SAA7191_IOCK_OEDY, /* (0x78) SAA7191_REG_IOCK
- * - chroma from CVBS, GPSW1 & 2 off */
- SAA7191_CTL3_AUFD | SAA7191_CTL3_SCEN | SAA7191_CTL3_OFTS
- | SAA7191_CTL3_YDEL0, /* (0x99) SAA7191_REG_CTL3
- * - automatic field detection */
- 0x00, /* (0x00) SAA7191_REG_CTL4 */
- 0x2c, /* (0x2c) SAA7191_REG_CHCV - PAL nominal value */
- 0x00, /* unused */
- 0x00, /* unused */
-
- /* 60 Hz signal timing */
- 0x34, /* (0x34) SAA7191_REG_HS6B */
- 0x0a, /* (0x0a) SAA7191_REG_HS6S */
- 0xf4, /* (0xf4) SAA7191_REG_HC6B */
- 0xce, /* (0xce) SAA7191_REG_HC6S */
- 0xf4, /* (0xf4) SAA7191_REG_HP6I */
-};
-
-/* SAA7191 register handling */
-
-static u8 saa7191_read_reg(struct v4l2_subdev *sd, u8 reg)
-{
- return to_saa7191(sd)->reg[reg];
-}
-
-static int saa7191_read_status(struct v4l2_subdev *sd, u8 *value)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret;
-
- ret = i2c_master_recv(client, value, 1);
- if (ret < 0) {
- printk(KERN_ERR "SAA7191: saa7191_read_status(): read failed\n");
- return ret;
- }
-
- return 0;
-}
-
-
-static int saa7191_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
-
- to_saa7191(sd)->reg[reg] = value;
- return i2c_smbus_write_byte_data(client, reg, value);
-}
-
-/* the first byte of data must be the first subaddress number (register) */
-static int saa7191_write_block(struct v4l2_subdev *sd,
- u8 length, const u8 *data)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct saa7191 *decoder = to_saa7191(sd);
- int i;
- int ret;
-
- for (i = 0; i < (length - 1); i++) {
- decoder->reg[data[0] + i] = data[i + 1];
- }
-
- ret = i2c_master_send(client, data, length);
- if (ret < 0) {
- printk(KERN_ERR "SAA7191: saa7191_write_block(): "
- "write failed\n");
- return ret;
- }
-
- return 0;
-}
-
-/* Helper functions */
-
-static int saa7191_s_routing(struct v4l2_subdev *sd,
- u32 input, u32 output, u32 config)
-{
- struct saa7191 *decoder = to_saa7191(sd);
- u8 luma = saa7191_read_reg(sd, SAA7191_REG_LUMA);
- u8 iock = saa7191_read_reg(sd, SAA7191_REG_IOCK);
- int err;
-
- switch (input) {
- case SAA7191_INPUT_COMPOSITE: /* Set Composite input */
- iock &= ~(SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW1
- | SAA7191_IOCK_GPSW2);
- /* Chrominance trap active */
- luma &= ~SAA7191_LUMA_BYPS;
- break;
- case SAA7191_INPUT_SVIDEO: /* Set S-Video input */
- iock |= SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW2;
- /* Chrominance trap bypassed */
- luma |= SAA7191_LUMA_BYPS;
- break;
- default:
- return -EINVAL;
- }
-
- err = saa7191_write_reg(sd, SAA7191_REG_LUMA, luma);
- if (err)
- return -EIO;
- err = saa7191_write_reg(sd, SAA7191_REG_IOCK, iock);
- if (err)
- return -EIO;
-
- decoder->input = input;
-
- return 0;
-}
-
-static int saa7191_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
-{
- struct saa7191 *decoder = to_saa7191(sd);
- u8 stdc = saa7191_read_reg(sd, SAA7191_REG_STDC);
- u8 ctl3 = saa7191_read_reg(sd, SAA7191_REG_CTL3);
- u8 chcv = saa7191_read_reg(sd, SAA7191_REG_CHCV);
- int err;
-
- if (norm & V4L2_STD_PAL) {
- stdc &= ~SAA7191_STDC_SECS;
- ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
- chcv = SAA7191_CHCV_PAL;
- } else if (norm & V4L2_STD_NTSC) {
- stdc &= ~SAA7191_STDC_SECS;
- ctl3 &= ~SAA7191_CTL3_AUFD;
- ctl3 |= SAA7191_CTL3_FSEL;
- chcv = SAA7191_CHCV_NTSC;
- } else if (norm & V4L2_STD_SECAM) {
- stdc |= SAA7191_STDC_SECS;
- ctl3 &= ~(SAA7191_CTL3_AUFD | SAA7191_CTL3_FSEL);
- chcv = SAA7191_CHCV_PAL;
- } else {
- return -EINVAL;
- }
-
- err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
- if (err)
- return -EIO;
- err = saa7191_write_reg(sd, SAA7191_REG_STDC, stdc);
- if (err)
- return -EIO;
- err = saa7191_write_reg(sd, SAA7191_REG_CHCV, chcv);
- if (err)
- return -EIO;
-
- decoder->norm = norm;
-
- dprintk("ctl3: %02x stdc: %02x chcv: %02x\n", ctl3,
- stdc, chcv);
- dprintk("norm: %llx\n", norm);
-
- return 0;
-}
-
-static int saa7191_wait_for_signal(struct v4l2_subdev *sd, u8 *status)
-{
- int i = 0;
-
- dprintk("Checking for signal...\n");
-
- for (i = 0; i < SAA7191_SYNC_COUNT; i++) {
- if (saa7191_read_status(sd, status))
- return -EIO;
-
- if (((*status) & SAA7191_STATUS_HLCK) == 0) {
- dprintk("Signal found\n");
- return 0;
- }
-
- msleep(SAA7191_SYNC_DELAY);
- }
-
- dprintk("No signal\n");
-
- return -EBUSY;
-}
-
-static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
-{
- struct saa7191 *decoder = to_saa7191(sd);
- u8 stdc = saa7191_read_reg(sd, SAA7191_REG_STDC);
- u8 ctl3 = saa7191_read_reg(sd, SAA7191_REG_CTL3);
- u8 status;
- v4l2_std_id old_norm = decoder->norm;
- int err = 0;
-
- dprintk("SAA7191 extended signal auto-detection...\n");
-
- *norm &= V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM;
- stdc &= ~SAA7191_STDC_SECS;
- ctl3 &= ~(SAA7191_CTL3_FSEL);
-
- err = saa7191_write_reg(sd, SAA7191_REG_STDC, stdc);
- if (err) {
- err = -EIO;
- goto out;
- }
- err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
- if (err) {
- err = -EIO;
- goto out;
- }
-
- ctl3 |= SAA7191_CTL3_AUFD;
- err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
- if (err) {
- err = -EIO;
- goto out;
- }
-
- msleep(SAA7191_SYNC_DELAY);
-
- err = saa7191_wait_for_signal(sd, &status);
- if (err)
- goto out;
-
- if (status & SAA7191_STATUS_FIDT) {
- /* 60Hz signal -> NTSC */
- dprintk("60Hz signal: NTSC\n");
- *norm &= V4L2_STD_NTSC;
- return 0;
- }
-
- /* 50Hz signal */
- dprintk("50Hz signal: Trying PAL...\n");
-
- /* try PAL first */
- err = saa7191_s_std(sd, V4L2_STD_PAL);
- if (err)
- goto out;
-
- msleep(SAA7191_SYNC_DELAY);
-
- err = saa7191_wait_for_signal(sd, &status);
- if (err)
- goto out;
-
- /* not 50Hz ? */
- if (status & SAA7191_STATUS_FIDT) {
- dprintk("No 50Hz signal\n");
- saa7191_s_std(sd, old_norm);
- *norm = V4L2_STD_UNKNOWN;
- return 0;
- }
-
- if (status & SAA7191_STATUS_CODE) {
- dprintk("PAL\n");
- *norm &= V4L2_STD_PAL;
- return saa7191_s_std(sd, old_norm);
- }
-
- dprintk("No color detected with PAL - Trying SECAM...\n");
-
- /* no color detected ? -> try SECAM */
- err = saa7191_s_std(sd, V4L2_STD_SECAM);
- if (err)
- goto out;
-
- msleep(SAA7191_SYNC_DELAY);
-
- err = saa7191_wait_for_signal(sd, &status);
- if (err)
- goto out;
-
- /* not 50Hz ? */
- if (status & SAA7191_STATUS_FIDT) {
- dprintk("No 50Hz signal\n");
- *norm = V4L2_STD_UNKNOWN;
- goto out;
- }
-
- if (status & SAA7191_STATUS_CODE) {
- /* Color detected -> SECAM */
- dprintk("SECAM\n");
- *norm &= V4L2_STD_SECAM;
- return saa7191_s_std(sd, old_norm);
- }
-
- dprintk("No color detected with SECAM - Going back to PAL.\n");
- *norm = V4L2_STD_UNKNOWN;
-
-out:
- return saa7191_s_std(sd, old_norm);
-}
-
-static int saa7191_autodetect_norm(struct v4l2_subdev *sd)
-{
- u8 status;
-
- dprintk("SAA7191 signal auto-detection...\n");
-
- dprintk("Reading status...\n");
-
- if (saa7191_read_status(sd, &status))
- return -EIO;
-
- dprintk("Checking for signal...\n");
-
- /* no signal ? */
- if (status & SAA7191_STATUS_HLCK) {
- dprintk("No signal\n");
- return -EBUSY;
- }
-
- dprintk("Signal found\n");
-
- if (status & SAA7191_STATUS_FIDT) {
- /* 60hz signal -> NTSC */
- dprintk("NTSC\n");
- return saa7191_s_std(sd, V4L2_STD_NTSC);
- } else {
- /* 50hz signal -> PAL */
- dprintk("PAL\n");
- return saa7191_s_std(sd, V4L2_STD_PAL);
- }
-}
-
-static int saa7191_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- u8 reg;
- int ret = 0;
-
- switch (ctrl->id) {
- case SAA7191_CONTROL_BANDPASS:
- case SAA7191_CONTROL_BANDPASS_WEIGHT:
- case SAA7191_CONTROL_CORING:
- reg = saa7191_read_reg(sd, SAA7191_REG_LUMA);
- switch (ctrl->id) {
- case SAA7191_CONTROL_BANDPASS:
- ctrl->value = ((s32)reg & SAA7191_LUMA_BPSS_MASK)
- >> SAA7191_LUMA_BPSS_SHIFT;
- break;
- case SAA7191_CONTROL_BANDPASS_WEIGHT:
- ctrl->value = ((s32)reg & SAA7191_LUMA_APER_MASK)
- >> SAA7191_LUMA_APER_SHIFT;
- break;
- case SAA7191_CONTROL_CORING:
- ctrl->value = ((s32)reg & SAA7191_LUMA_CORI_MASK)
- >> SAA7191_LUMA_CORI_SHIFT;
- break;
- }
- break;
- case SAA7191_CONTROL_FORCE_COLOUR:
- case SAA7191_CONTROL_CHROMA_GAIN:
- reg = saa7191_read_reg(sd, SAA7191_REG_GAIN);
- if (ctrl->id == SAA7191_CONTROL_FORCE_COLOUR)
- ctrl->value = ((s32)reg & SAA7191_GAIN_COLO) ? 1 : 0;
- else
- ctrl->value = ((s32)reg & SAA7191_GAIN_LFIS_MASK)
- >> SAA7191_GAIN_LFIS_SHIFT;
- break;
- case V4L2_CID_HUE:
- reg = saa7191_read_reg(sd, SAA7191_REG_HUEC);
- if (reg < 0x80)
- reg += 0x80;
- else
- reg -= 0x80;
- ctrl->value = (s32)reg;
- break;
- case SAA7191_CONTROL_VTRC:
- reg = saa7191_read_reg(sd, SAA7191_REG_STDC);
- ctrl->value = ((s32)reg & SAA7191_STDC_VTRC) ? 1 : 0;
- break;
- case SAA7191_CONTROL_LUMA_DELAY:
- reg = saa7191_read_reg(sd, SAA7191_REG_CTL3);
- ctrl->value = ((s32)reg & SAA7191_CTL3_YDEL_MASK)
- >> SAA7191_CTL3_YDEL_SHIFT;
- if (ctrl->value >= 4)
- ctrl->value -= 8;
- break;
- case SAA7191_CONTROL_VNR:
- reg = saa7191_read_reg(sd, SAA7191_REG_CTL4);
- ctrl->value = ((s32)reg & SAA7191_CTL4_VNOI_MASK)
- >> SAA7191_CTL4_VNOI_SHIFT;
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static int saa7191_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
- u8 reg;
- int ret = 0;
-
- switch (ctrl->id) {
- case SAA7191_CONTROL_BANDPASS:
- case SAA7191_CONTROL_BANDPASS_WEIGHT:
- case SAA7191_CONTROL_CORING:
- reg = saa7191_read_reg(sd, SAA7191_REG_LUMA);
- switch (ctrl->id) {
- case SAA7191_CONTROL_BANDPASS:
- reg &= ~SAA7191_LUMA_BPSS_MASK;
- reg |= (ctrl->value << SAA7191_LUMA_BPSS_SHIFT)
- & SAA7191_LUMA_BPSS_MASK;
- break;
- case SAA7191_CONTROL_BANDPASS_WEIGHT:
- reg &= ~SAA7191_LUMA_APER_MASK;
- reg |= (ctrl->value << SAA7191_LUMA_APER_SHIFT)
- & SAA7191_LUMA_APER_MASK;
- break;
- case SAA7191_CONTROL_CORING:
- reg &= ~SAA7191_LUMA_CORI_MASK;
- reg |= (ctrl->value << SAA7191_LUMA_CORI_SHIFT)
- & SAA7191_LUMA_CORI_MASK;
- break;
- }
- ret = saa7191_write_reg(sd, SAA7191_REG_LUMA, reg);
- break;
- case SAA7191_CONTROL_FORCE_COLOUR:
- case SAA7191_CONTROL_CHROMA_GAIN:
- reg = saa7191_read_reg(sd, SAA7191_REG_GAIN);
- if (ctrl->id == SAA7191_CONTROL_FORCE_COLOUR) {
- if (ctrl->value)
- reg |= SAA7191_GAIN_COLO;
- else
- reg &= ~SAA7191_GAIN_COLO;
- } else {
- reg &= ~SAA7191_GAIN_LFIS_MASK;
- reg |= (ctrl->value << SAA7191_GAIN_LFIS_SHIFT)
- & SAA7191_GAIN_LFIS_MASK;
- }
- ret = saa7191_write_reg(sd, SAA7191_REG_GAIN, reg);
- break;
- case V4L2_CID_HUE:
- reg = ctrl->value & 0xff;
- if (reg < 0x80)
- reg += 0x80;
- else
- reg -= 0x80;
- ret = saa7191_write_reg(sd, SAA7191_REG_HUEC, reg);
- break;
- case SAA7191_CONTROL_VTRC:
- reg = saa7191_read_reg(sd, SAA7191_REG_STDC);
- if (ctrl->value)
- reg |= SAA7191_STDC_VTRC;
- else
- reg &= ~SAA7191_STDC_VTRC;
- ret = saa7191_write_reg(sd, SAA7191_REG_STDC, reg);
- break;
- case SAA7191_CONTROL_LUMA_DELAY: {
- s32 value = ctrl->value;
- if (value < 0)
- value += 8;
- reg = saa7191_read_reg(sd, SAA7191_REG_CTL3);
- reg &= ~SAA7191_CTL3_YDEL_MASK;
- reg |= (value << SAA7191_CTL3_YDEL_SHIFT)
- & SAA7191_CTL3_YDEL_MASK;
- ret = saa7191_write_reg(sd, SAA7191_REG_CTL3, reg);
- break;
- }
- case SAA7191_CONTROL_VNR:
- reg = saa7191_read_reg(sd, SAA7191_REG_CTL4);
- reg &= ~SAA7191_CTL4_VNOI_MASK;
- reg |= (ctrl->value << SAA7191_CTL4_VNOI_SHIFT)
- & SAA7191_CTL4_VNOI_MASK;
- ret = saa7191_write_reg(sd, SAA7191_REG_CTL4, reg);
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-/* I2C-interface */
-
-static int saa7191_g_input_status(struct v4l2_subdev *sd, u32 *status)
-{
- u8 status_reg;
- int res = V4L2_IN_ST_NO_SIGNAL;
-
- if (saa7191_read_status(sd, &status_reg))
- return -EIO;
- if ((status_reg & SAA7191_STATUS_HLCK) == 0)
- res = 0;
- if (!(status_reg & SAA7191_STATUS_CODE))
- res |= V4L2_IN_ST_NO_COLOR;
- *status = res;
- return 0;
-}
-
-
-/* ----------------------------------------------------------------------- */
-
-static const struct v4l2_subdev_core_ops saa7191_core_ops = {
- .g_ctrl = saa7191_g_ctrl,
- .s_ctrl = saa7191_s_ctrl,
-};
-
-static const struct v4l2_subdev_video_ops saa7191_video_ops = {
- .s_std = saa7191_s_std,
- .s_routing = saa7191_s_routing,
- .querystd = saa7191_querystd,
- .g_input_status = saa7191_g_input_status,
-};
-
-static const struct v4l2_subdev_ops saa7191_ops = {
- .core = &saa7191_core_ops,
- .video = &saa7191_video_ops,
-};
-
-static int saa7191_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int err = 0;
- struct saa7191 *decoder;
- struct v4l2_subdev *sd;
-
- v4l_info(client, "chip found @ 0x%x (%s)\n",
- client->addr << 1, client->adapter->name);
-
- decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
- if (!decoder)
- return -ENOMEM;
-
- sd = &decoder->sd;
- v4l2_i2c_subdev_init(sd, client, &saa7191_ops);
-
- err = saa7191_write_block(sd, sizeof(initseq), initseq);
- if (err) {
- printk(KERN_ERR "SAA7191 initialization failed\n");
- return err;
- }
-
- printk(KERN_INFO "SAA7191 initialized\n");
-
- decoder->input = SAA7191_INPUT_COMPOSITE;
- decoder->norm = V4L2_STD_PAL;
-
- err = saa7191_autodetect_norm(sd);
- if (err && (err != -EBUSY))
- printk(KERN_ERR "SAA7191: Signal auto-detection failed\n");
-
- return 0;
-}
-
-static int saa7191_remove(struct i2c_client *client)
-{
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
-
- v4l2_device_unregister_subdev(sd);
- return 0;
-}
-
-static const struct i2c_device_id saa7191_id[] = {
- { "saa7191", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, saa7191_id);
-
-static struct i2c_driver saa7191_driver = {
- .driver = {
- .owner = THIS_MODULE,
- .name = "saa7191",
- },
- .probe = saa7191_probe,
- .remove = saa7191_remove,
- .id_table = saa7191_id,
-};
-
-module_i2c_driver(saa7191_driver);

Privacy Policy