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linux/drivers/media/i2c/vpx3220.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

567 lines
14 KiB
C
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/*
* vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
*
* Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
MODULE_AUTHOR("Laurent Pinchart");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define VPX_TIMEOUT_COUNT 10
/* ----------------------------------------------------------------------- */
struct vpx3220 {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
unsigned char reg[255];
v4l2_std_id norm;
int input;
int enable;
};
static inline struct vpx3220 *to_vpx3220(struct v4l2_subdev *sd)
{
return container_of(sd, struct vpx3220, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct vpx3220, hdl)->sd;
}
static char *inputs[] = { "internal", "composite", "svideo" };
/* ----------------------------------------------------------------------- */
static inline int vpx3220_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct vpx3220 *decoder = i2c_get_clientdata(client);
decoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline int vpx3220_read(struct v4l2_subdev *sd, u8 reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return i2c_smbus_read_byte_data(client, reg);
}
static int vpx3220_fp_status(struct v4l2_subdev *sd)
{
unsigned char status;
unsigned int i;
for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
status = vpx3220_read(sd, 0x29);
if (!(status & 4))
return 0;
udelay(10);
if (need_resched())
cond_resched();
}
return -1;
}
static int vpx3220_fp_write(struct v4l2_subdev *sd, u8 fpaddr, u16 data)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
/* Write the 16-bit address to the FPWR register */
if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
return -1;
}
if (vpx3220_fp_status(sd) < 0)
return -1;
/* Write the 16-bit data to the FPDAT register */
if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
return -1;
}
return 0;
}
static int vpx3220_fp_read(struct v4l2_subdev *sd, u16 fpaddr)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
s16 data;
/* Write the 16-bit address to the FPRD register */
if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
return -1;
}
if (vpx3220_fp_status(sd) < 0)
return -1;
/* Read the 16-bit data from the FPDAT register */
data = i2c_smbus_read_word_data(client, 0x28);
if (data == -1) {
v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
return -1;
}
return swab16(data);
}
static int vpx3220_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
{
u8 reg;
int ret = -1;
while (len >= 2) {
reg = *data++;
ret = vpx3220_write(sd, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
return ret;
}
static int vpx3220_write_fp_block(struct v4l2_subdev *sd,
const u16 *data, unsigned int len)
{
u8 reg;
int ret = 0;
while (len > 1) {
reg = *data++;
ret |= vpx3220_fp_write(sd, reg, *data++);
len -= 2;
}
return ret;
}
/* ---------------------------------------------------------------------- */
static const unsigned short init_ntsc[] = {
0x1c, 0x00, /* NTSC tint angle */
0x88, 17, /* Window 1 vertical */
0x89, 240, /* Vertical lines in */
0x8a, 240, /* Vertical lines out */
0x8b, 000, /* Horizontal begin */
0x8c, 640, /* Horizontal length */
0x8d, 640, /* Number of pixels */
0x8f, 0xc00, /* Disable window 2 */
0xf0, 0x73, /* 13.5 MHz transport, Forced
* mode, latch windows */
0xf2, 0x13, /* NTSC M, composite input */
0xe7, 0x1e1, /* Enable vertical standard
* locking @ 240 lines */
};
static const unsigned short init_pal[] = {
0x88, 23, /* Window 1 vertical begin */
0x89, 288, /* Vertical lines in (16 lines
* skipped by the VFE) */
0x8a, 288, /* Vertical lines out (16 lines
* skipped by the VFE) */
0x8b, 16, /* Horizontal begin */
0x8c, 768, /* Horizontal length */
0x8d, 784, /* Number of pixels
* Must be >= Horizontal begin + Horizontal length */
0x8f, 0xc00, /* Disable window 2 */
0xf0, 0x77, /* 13.5 MHz transport, Forced
* mode, latch windows */
0xf2, 0x3d1, /* PAL B,G,H,I, composite input */
0xe7, 0x241, /* PAL/SECAM set to 288 lines */
};
static const unsigned short init_secam[] = {
0x88, 23, /* Window 1 vertical begin */
0x89, 288, /* Vertical lines in (16 lines
* skipped by the VFE) */
0x8a, 288, /* Vertical lines out (16 lines
* skipped by the VFE) */
0x8b, 16, /* Horizontal begin */
0x8c, 768, /* Horizontal length */
0x8d, 784, /* Number of pixels
* Must be >= Horizontal begin + Horizontal length */
0x8f, 0xc00, /* Disable window 2 */
0xf0, 0x77, /* 13.5 MHz transport, Forced
* mode, latch windows */
0xf2, 0x3d5, /* SECAM, composite input */
0xe7, 0x241, /* PAL/SECAM set to 288 lines */
};
static const unsigned char init_common[] = {
0xf2, 0x00, /* Disable all outputs */
0x33, 0x0d, /* Luma : VIN2, Chroma : CIN
* (clamp off) */
0xd8, 0xa8, /* HREF/VREF active high, VREF
* pulse = 2, Odd/Even flag */
0x20, 0x03, /* IF compensation 0dB/oct */
0xe0, 0xff, /* Open up all comparators */
0xe1, 0x00,
0xe2, 0x7f,
0xe3, 0x80,
0xe4, 0x7f,
0xe5, 0x80,
0xe6, 0x00, /* Brightness set to 0 */
0xe7, 0xe0, /* Contrast to 1.0, noise shaping
* 10 to 8 2-bit error diffusion */
0xe8, 0xf8, /* YUV422, CbCr binary offset,
* ... (p.32) */
0xea, 0x18, /* LLC2 connected, output FIFO
* reset with VACTintern */
0xf0, 0x8a, /* Half full level to 10, bus
* shuffler [7:0, 23:16, 15:8] */
0xf1, 0x18, /* Single clock, sync mode, no
* FE delay, no HLEN counter */
0xf8, 0x12, /* Port A, PIXCLK, HF# & FE#
* strength to 2 */
0xf9, 0x24, /* Port B, HREF, VREF, PREF &
* ALPHA strength to 4 */
};
static const unsigned short init_fp[] = {
0x59, 0,
0xa0, 2070, /* ACC reference */
0xa3, 0,
0xa4, 0,
0xa8, 30,
0xb2, 768,
0xbe, 27,
0x58, 0,
0x26, 0,
0x4b, 0x298, /* PLL gain */
};
static int vpx3220_init(struct v4l2_subdev *sd, u32 val)
{
struct vpx3220 *decoder = to_vpx3220(sd);
vpx3220_write_block(sd, init_common, sizeof(init_common));
vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
if (decoder->norm & V4L2_STD_NTSC)
vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
else if (decoder->norm & V4L2_STD_PAL)
vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
else if (decoder->norm & V4L2_STD_SECAM)
vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
else
vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
return 0;
}
static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
{
int res = V4L2_IN_ST_NO_SIGNAL, status;
v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
status = vpx3220_fp_read(sd, 0x0f3);
v4l2_dbg(1, debug, sd, "status: 0x%04x\n", status);
if (status < 0)
return status;
if ((status & 0x20) == 0) {
res = 0;
switch (status & 0x18) {
case 0x00:
case 0x10:
case 0x14:
case 0x18:
std &= V4L2_STD_PAL;
break;
case 0x08:
std &= V4L2_STD_SECAM;
break;
case 0x04:
case 0x0c:
case 0x1c:
std &= V4L2_STD_NTSC;
break;
}
} else {
std = V4L2_STD_UNKNOWN;
}
if (pstd)
*pstd = std;
if (pstatus)
*pstatus = res;
return 0;
}
static int vpx3220_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
v4l2_dbg(1, debug, sd, "querystd\n");
return vpx3220_status(sd, NULL, std);
}
static int vpx3220_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
v4l2_dbg(1, debug, sd, "g_input_status\n");
return vpx3220_status(sd, status, NULL);
}
static int vpx3220_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct vpx3220 *decoder = to_vpx3220(sd);
int temp_input;
/* Here we back up the input selection because it gets
overwritten when we fill the registers with the
chosen video norm */
temp_input = vpx3220_fp_read(sd, 0xf2);
v4l2_dbg(1, debug, sd, "s_std %llx\n", (unsigned long long)std);
if (std & V4L2_STD_NTSC) {
vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
v4l2_dbg(1, debug, sd, "norm switched to NTSC\n");
} else if (std & V4L2_STD_PAL) {
vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
v4l2_dbg(1, debug, sd, "norm switched to PAL\n");
} else if (std & V4L2_STD_SECAM) {
vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
v4l2_dbg(1, debug, sd, "norm switched to SECAM\n");
} else {
return -EINVAL;
}
decoder->norm = std;
/* And here we set the backed up video input again */
vpx3220_fp_write(sd, 0xf2, temp_input | 0x0010);
udelay(10);
return 0;
}
static int vpx3220_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
int data;
/* RJ: input = 0: ST8 (PCTV) input
input = 1: COMPOSITE input
input = 2: SVHS input */
const int input_vals[3][2] = {
{0x0c, 0},
{0x0d, 0},
{0x0e, 1}
};
if (input > 2)
return -EINVAL;
v4l2_dbg(1, debug, sd, "input switched to %s\n", inputs[input]);
vpx3220_write(sd, 0x33, input_vals[input][0]);
data = vpx3220_fp_read(sd, 0xf2) & ~(0x0020);
if (data < 0)
return data;
/* 0x0010 is required to latch the setting */
vpx3220_fp_write(sd, 0xf2,
data | (input_vals[input][1] << 5) | 0x0010);
udelay(10);
return 0;
}
static int vpx3220_s_stream(struct v4l2_subdev *sd, int enable)
{
v4l2_dbg(1, debug, sd, "s_stream %s\n", enable ? "on" : "off");
vpx3220_write(sd, 0xf2, (enable ? 0x1b : 0x00));
return 0;
}
static int vpx3220_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
vpx3220_write(sd, 0xe6, ctrl->val);
return 0;
case V4L2_CID_CONTRAST:
/* Bit 7 and 8 is for noise shaping */
vpx3220_write(sd, 0xe7, ctrl->val + 192);
return 0;
case V4L2_CID_SATURATION:
vpx3220_fp_write(sd, 0xa0, ctrl->val);
return 0;
case V4L2_CID_HUE:
vpx3220_fp_write(sd, 0x1c, ctrl->val);
return 0;
}
return -EINVAL;
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops vpx3220_ctrl_ops = {
.s_ctrl = vpx3220_s_ctrl,
};
static const struct v4l2_subdev_core_ops vpx3220_core_ops = {
.init = vpx3220_init,
};
static const struct v4l2_subdev_video_ops vpx3220_video_ops = {
.s_std = vpx3220_s_std,
.s_routing = vpx3220_s_routing,
.s_stream = vpx3220_s_stream,
.querystd = vpx3220_querystd,
.g_input_status = vpx3220_g_input_status,
};
static const struct v4l2_subdev_ops vpx3220_ops = {
.core = &vpx3220_core_ops,
.video = &vpx3220_video_ops,
};
/* -----------------------------------------------------------------------
* Client management code
*/
static int vpx3220_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct vpx3220 *decoder;
struct v4l2_subdev *sd;
const char *name = NULL;
u8 ver;
u16 pn;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
if (decoder == NULL)
return -ENOMEM;
sd = &decoder->sd;
v4l2_i2c_subdev_init(sd, client, &vpx3220_ops);
decoder->norm = V4L2_STD_PAL;
decoder->input = 0;
decoder->enable = 1;
v4l2_ctrl_handler_init(&decoder->hdl, 4);
v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
V4L2_CID_CONTRAST, 0, 63, 1, 32);
v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
V4L2_CID_SATURATION, 0, 4095, 1, 2048);
v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
V4L2_CID_HUE, -512, 511, 1, 0);
sd->ctrl_handler = &decoder->hdl;
if (decoder->hdl.error) {
int err = decoder->hdl.error;
v4l2_ctrl_handler_free(&decoder->hdl);
return err;
}
v4l2_ctrl_handler_setup(&decoder->hdl);
ver = i2c_smbus_read_byte_data(client, 0x00);
pn = (i2c_smbus_read_byte_data(client, 0x02) << 8) +
i2c_smbus_read_byte_data(client, 0x01);
if (ver == 0xec) {
switch (pn) {
case 0x4680:
name = "vpx3220a";
break;
case 0x4260:
name = "vpx3216b";
break;
case 0x4280:
name = "vpx3214c";
break;
}
}
if (name)
v4l2_info(sd, "%s found @ 0x%x (%s)\n", name,
client->addr << 1, client->adapter->name);
else
v4l2_info(sd, "chip (%02x:%04x) found @ 0x%x (%s)\n",
ver, pn, client->addr << 1, client->adapter->name);
vpx3220_write_block(sd, init_common, sizeof(init_common));
vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
/* Default to PAL */
vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
return 0;
}
static int vpx3220_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct vpx3220 *decoder = to_vpx3220(sd);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&decoder->hdl);
return 0;
}
static const struct i2c_device_id vpx3220_id[] = {
{ "vpx3220a", 0 },
{ "vpx3216b", 0 },
{ "vpx3214c", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, vpx3220_id);
static struct i2c_driver vpx3220_driver = {
.driver = {
.name = "vpx3220",
},
.probe = vpx3220_probe,
.remove = vpx3220_remove,
.id_table = vpx3220_id,
};
module_i2c_driver(vpx3220_driver);
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