diff options
Diffstat (limited to 'drivers/media/video/saa7191.c')
| -rw-r--r-- | drivers/media/video/saa7191.c | 659 |
1 files changed, 0 insertions, 659 deletions
diff --git a/drivers/media/video/saa7191.c b/drivers/media/video/saa7191.c deleted file mode 100644 index d7d1670e0ca..00000000000 --- a/drivers/media/video/saa7191.c +++ /dev/null @@ -1,659 +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 <media/v4l2-chip-ident.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); - return -EAGAIN; - } - - 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"); - err = -EAGAIN; - 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"); - -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 int saa7191_g_chip_ident(struct v4l2_subdev *sd, - struct v4l2_dbg_chip_ident *chip) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7191, 0); -} - -/* ----------------------------------------------------------------------- */ - -static const struct v4l2_subdev_core_ops saa7191_core_ops = { - .g_chip_ident = saa7191_g_chip_ident, - .g_ctrl = saa7191_g_ctrl, - .s_ctrl = saa7191_s_ctrl, - .s_std = saa7191_s_std, -}; - -static const struct v4l2_subdev_video_ops saa7191_video_ops = { - .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 = kzalloc(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"); - kfree(decoder); - 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); - kfree(to_saa7191(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); |