602 lines
14 KiB
C
602 lines
14 KiB
C
/*
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* vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
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*
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* Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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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/delay.h>
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#include <linux/types.h>
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#include <asm/uaccess.h>
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#include <linux/i2c.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-i2c-drv-legacy.h>
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#include <linux/videodev.h>
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#include <linux/video_decoder.h>
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MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
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MODULE_AUTHOR("Laurent Pinchart");
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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 VPX_TIMEOUT_COUNT 10
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/* ----------------------------------------------------------------------- */
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struct vpx3220 {
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unsigned char reg[255];
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int norm;
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int input;
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int enable;
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int bright;
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int contrast;
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int hue;
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int sat;
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};
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static char *inputs[] = { "internal", "composite", "svideo" };
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/* ----------------------------------------------------------------------- */
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static inline int vpx3220_write(struct i2c_client *client, u8 reg, u8 value)
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{
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struct vpx3220 *decoder = i2c_get_clientdata(client);
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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 inline int vpx3220_read(struct i2c_client *client, u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int vpx3220_fp_status(struct i2c_client *client)
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{
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unsigned char status;
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unsigned int i;
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for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
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status = vpx3220_read(client, 0x29);
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if (!(status & 4))
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return 0;
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udelay(10);
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if (need_resched())
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cond_resched();
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}
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return -1;
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}
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static int vpx3220_fp_write(struct i2c_client *client, u8 fpaddr, u16 data)
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{
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/* Write the 16-bit address to the FPWR register */
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if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
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v4l_dbg(1, debug, client, "%s: failed\n", __func__);
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return -1;
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}
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if (vpx3220_fp_status(client) < 0)
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return -1;
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/* Write the 16-bit data to the FPDAT register */
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if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
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v4l_dbg(1, debug, client, "%s: failed\n", __func__);
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return -1;
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}
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return 0;
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}
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static u16 vpx3220_fp_read(struct i2c_client *client, u16 fpaddr)
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{
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s16 data;
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/* Write the 16-bit address to the FPRD register */
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if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
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v4l_dbg(1, debug, client, "%s: failed\n", __func__);
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return -1;
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}
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if (vpx3220_fp_status(client) < 0)
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return -1;
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/* Read the 16-bit data from the FPDAT register */
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data = i2c_smbus_read_word_data(client, 0x28);
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if (data == -1) {
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v4l_dbg(1, debug, client, "%s: failed\n", __func__);
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return -1;
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}
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return swab16(data);
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}
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static int vpx3220_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
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{
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u8 reg;
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int ret = -1;
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while (len >= 2) {
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reg = *data++;
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ret = vpx3220_write(client, reg, *data++);
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if (ret < 0)
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break;
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len -= 2;
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}
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return ret;
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}
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static int vpx3220_write_fp_block(struct i2c_client *client,
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const u16 *data, unsigned int len)
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{
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u8 reg;
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int ret = 0;
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while (len > 1) {
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reg = *data++;
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ret |= vpx3220_fp_write(client, reg, *data++);
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len -= 2;
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}
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return ret;
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}
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/* ---------------------------------------------------------------------- */
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static const unsigned short init_ntsc[] = {
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0x1c, 0x00, /* NTSC tint angle */
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0x88, 17, /* Window 1 vertical */
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0x89, 240, /* Vertical lines in */
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0x8a, 240, /* Vertical lines out */
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0x8b, 000, /* Horizontal begin */
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0x8c, 640, /* Horizontal length */
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0x8d, 640, /* Number of pixels */
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0x8f, 0xc00, /* Disable window 2 */
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0xf0, 0x73, /* 13.5 MHz transport, Forced
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* mode, latch windows */
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0xf2, 0x13, /* NTSC M, composite input */
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0xe7, 0x1e1, /* Enable vertical standard
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* locking @ 240 lines */
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};
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static const unsigned short init_pal[] = {
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0x88, 23, /* Window 1 vertical begin */
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0x89, 288, /* Vertical lines in (16 lines
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* skipped by the VFE) */
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0x8a, 288, /* Vertical lines out (16 lines
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* skipped by the VFE) */
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0x8b, 16, /* Horizontal begin */
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0x8c, 768, /* Horizontal length */
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0x8d, 784, /* Number of pixels
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* Must be >= Horizontal begin + Horizontal length */
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0x8f, 0xc00, /* Disable window 2 */
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0xf0, 0x77, /* 13.5 MHz transport, Forced
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* mode, latch windows */
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0xf2, 0x3d1, /* PAL B,G,H,I, composite input */
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0xe7, 0x241, /* PAL/SECAM set to 288 lines */
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};
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static const unsigned short init_secam[] = {
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0x88, 23, /* Window 1 vertical begin */
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0x89, 288, /* Vertical lines in (16 lines
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* skipped by the VFE) */
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0x8a, 288, /* Vertical lines out (16 lines
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* skipped by the VFE) */
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0x8b, 16, /* Horizontal begin */
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0x8c, 768, /* Horizontal length */
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0x8d, 784, /* Number of pixels
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* Must be >= Horizontal begin + Horizontal length */
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0x8f, 0xc00, /* Disable window 2 */
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0xf0, 0x77, /* 13.5 MHz transport, Forced
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* mode, latch windows */
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0xf2, 0x3d5, /* SECAM, composite input */
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0xe7, 0x241, /* PAL/SECAM set to 288 lines */
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};
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static const unsigned char init_common[] = {
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0xf2, 0x00, /* Disable all outputs */
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0x33, 0x0d, /* Luma : VIN2, Chroma : CIN
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* (clamp off) */
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0xd8, 0xa8, /* HREF/VREF active high, VREF
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* pulse = 2, Odd/Even flag */
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0x20, 0x03, /* IF compensation 0dB/oct */
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0xe0, 0xff, /* Open up all comparators */
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0xe1, 0x00,
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0xe2, 0x7f,
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0xe3, 0x80,
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0xe4, 0x7f,
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0xe5, 0x80,
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0xe6, 0x00, /* Brightness set to 0 */
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0xe7, 0xe0, /* Contrast to 1.0, noise shaping
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* 10 to 8 2-bit error diffusion */
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0xe8, 0xf8, /* YUV422, CbCr binary offset,
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* ... (p.32) */
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0xea, 0x18, /* LLC2 connected, output FIFO
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* reset with VACTintern */
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0xf0, 0x8a, /* Half full level to 10, bus
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* shuffler [7:0, 23:16, 15:8] */
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0xf1, 0x18, /* Single clock, sync mode, no
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* FE delay, no HLEN counter */
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0xf8, 0x12, /* Port A, PIXCLK, HF# & FE#
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* strength to 2 */
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0xf9, 0x24, /* Port B, HREF, VREF, PREF &
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* ALPHA strength to 4 */
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};
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static const unsigned short init_fp[] = {
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0x59, 0,
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0xa0, 2070, /* ACC reference */
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0xa3, 0,
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0xa4, 0,
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0xa8, 30,
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0xb2, 768,
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0xbe, 27,
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0x58, 0,
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0x26, 0,
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0x4b, 0x298, /* PLL gain */
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};
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static void vpx3220_dump_i2c(struct i2c_client *client)
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{
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int len = sizeof(init_common);
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const unsigned char *data = init_common;
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while (len > 1) {
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v4l_dbg(1, debug, client, "i2c reg 0x%02x data 0x%02x\n",
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*data, vpx3220_read(client, *data));
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data += 2;
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len -= 2;
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}
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}
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static int vpx3220_command(struct i2c_client *client, unsigned cmd, void *arg)
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{
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struct vpx3220 *decoder = i2c_get_clientdata(client);
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switch (cmd) {
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case 0:
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{
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vpx3220_write_block(client, init_common,
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sizeof(init_common));
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vpx3220_write_fp_block(client, init_fp,
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sizeof(init_fp) >> 1);
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switch (decoder->norm) {
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case VIDEO_MODE_NTSC:
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vpx3220_write_fp_block(client, init_ntsc,
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sizeof(init_ntsc) >> 1);
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break;
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case VIDEO_MODE_PAL:
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vpx3220_write_fp_block(client, init_pal,
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sizeof(init_pal) >> 1);
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break;
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case VIDEO_MODE_SECAM:
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vpx3220_write_fp_block(client, init_secam,
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sizeof(init_secam) >> 1);
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break;
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default:
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vpx3220_write_fp_block(client, init_pal,
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sizeof(init_pal) >> 1);
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break;
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}
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break;
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}
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case DECODER_DUMP:
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{
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vpx3220_dump_i2c(client);
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break;
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}
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case DECODER_GET_CAPABILITIES:
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{
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struct video_decoder_capability *cap = arg;
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v4l_dbg(1, debug, client, "DECODER_GET_CAPABILITIES\n");
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cap->flags = VIDEO_DECODER_PAL |
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VIDEO_DECODER_NTSC |
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VIDEO_DECODER_SECAM |
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VIDEO_DECODER_AUTO |
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VIDEO_DECODER_CCIR;
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cap->inputs = 3;
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cap->outputs = 1;
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break;
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}
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case DECODER_GET_STATUS:
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{
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int res = 0, status;
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v4l_dbg(1, debug, client, "DECODER_GET_STATUS\n");
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status = vpx3220_fp_read(client, 0x0f3);
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v4l_dbg(1, debug, client, "status: 0x%04x\n", status);
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if (status < 0)
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return status;
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if ((status & 0x20) == 0) {
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res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR;
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switch (status & 0x18) {
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case 0x00:
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case 0x10:
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case 0x14:
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case 0x18:
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res |= DECODER_STATUS_PAL;
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break;
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case 0x08:
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res |= DECODER_STATUS_SECAM;
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break;
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case 0x04:
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case 0x0c:
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case 0x1c:
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res |= DECODER_STATUS_NTSC;
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break;
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}
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}
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*(int *) arg = res;
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break;
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}
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case DECODER_SET_NORM:
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{
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int *iarg = arg, data;
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int temp_input;
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/* Here we back up the input selection because it gets
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overwritten when we fill the registers with the
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choosen video norm */
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temp_input = vpx3220_fp_read(client, 0xf2);
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v4l_dbg(1, debug, client, "DECODER_SET_NORM %d\n", *iarg);
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switch (*iarg) {
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case VIDEO_MODE_NTSC:
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vpx3220_write_fp_block(client, init_ntsc,
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sizeof(init_ntsc) >> 1);
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v4l_dbg(1, debug, client, "norm switched to NTSC\n");
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break;
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case VIDEO_MODE_PAL:
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vpx3220_write_fp_block(client, init_pal,
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sizeof(init_pal) >> 1);
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v4l_dbg(1, debug, client, "norm switched to PAL\n");
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break;
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case VIDEO_MODE_SECAM:
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vpx3220_write_fp_block(client, init_secam,
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sizeof(init_secam) >> 1);
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v4l_dbg(1, debug, client, "norm switched to SECAM\n");
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break;
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case VIDEO_MODE_AUTO:
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/* FIXME This is only preliminary support */
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data = vpx3220_fp_read(client, 0xf2) & 0x20;
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vpx3220_fp_write(client, 0xf2, 0x00c0 | data);
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v4l_dbg(1, debug, client, "norm switched to AUTO\n");
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break;
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default:
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return -EINVAL;
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}
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decoder->norm = *iarg;
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/* And here we set the backed up video input again */
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vpx3220_fp_write(client, 0xf2, temp_input | 0x0010);
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udelay(10);
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break;
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}
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case DECODER_SET_INPUT:
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{
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int *iarg = arg, data;
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/* RJ: *iarg = 0: ST8 (PCTV) input
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*iarg = 1: COMPOSITE input
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*iarg = 2: SVHS input */
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const int input[3][2] = {
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{0x0c, 0},
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{0x0d, 0},
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{0x0e, 1}
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};
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if (*iarg < 0 || *iarg > 2)
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return -EINVAL;
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v4l_dbg(1, debug, client, "input switched to %s\n", inputs[*iarg]);
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vpx3220_write(client, 0x33, input[*iarg][0]);
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data = vpx3220_fp_read(client, 0xf2) & ~(0x0020);
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if (data < 0)
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return data;
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/* 0x0010 is required to latch the setting */
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vpx3220_fp_write(client, 0xf2,
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data | (input[*iarg][1] << 5) | 0x0010);
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udelay(10);
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break;
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}
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case DECODER_SET_OUTPUT:
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{
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int *iarg = arg;
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/* not much choice of outputs */
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if (*iarg != 0) {
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return -EINVAL;
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}
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break;
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}
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case DECODER_ENABLE_OUTPUT:
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{
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int *iarg = arg;
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v4l_dbg(1, debug, client, "DECODER_ENABLE_OUTPUT %d\n", *iarg);
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vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00));
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break;
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}
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case DECODER_SET_PICTURE:
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{
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struct video_picture *pic = arg;
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if (decoder->bright != pic->brightness) {
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/* We want -128 to 128 we get 0-65535 */
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decoder->bright = pic->brightness;
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vpx3220_write(client, 0xe6,
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(decoder->bright - 32768) >> 8);
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}
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if (decoder->contrast != pic->contrast) {
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/* We want 0 to 64 we get 0-65535 */
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/* Bit 7 and 8 is for noise shaping */
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decoder->contrast = pic->contrast;
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vpx3220_write(client, 0xe7,
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(decoder->contrast >> 10) + 192);
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}
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if (decoder->sat != pic->colour) {
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/* We want 0 to 4096 we get 0-65535 */
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decoder->sat = pic->colour;
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vpx3220_fp_write(client, 0xa0,
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decoder->sat >> 4);
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}
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if (decoder->hue != pic->hue) {
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/* We want -512 to 512 we get 0-65535 */
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decoder->hue = pic->hue;
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vpx3220_fp_write(client, 0x1c,
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((decoder->hue - 32768) >> 6) & 0xFFF);
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}
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break;
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}
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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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static int vpx3220_init_client(struct i2c_client *client)
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{
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vpx3220_write_block(client, init_common, sizeof(init_common));
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vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1);
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/* Default to PAL */
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vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1);
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return 0;
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}
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/* -----------------------------------------------------------------------
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* Client management code
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*/
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|
|
static unsigned short normal_i2c[] = { 0x86 >> 1, 0x8e >> 1, I2C_CLIENT_END };
|
|
|
|
I2C_CLIENT_INSMOD;
|
|
|
|
static int vpx3220_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct vpx3220 *decoder;
|
|
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 = kzalloc(sizeof(struct vpx3220), GFP_KERNEL);
|
|
if (decoder == NULL)
|
|
return -ENOMEM;
|
|
decoder->norm = VIDEO_MODE_PAL;
|
|
decoder->input = 0;
|
|
decoder->enable = 1;
|
|
decoder->bright = 32768;
|
|
decoder->contrast = 32768;
|
|
decoder->hue = 32768;
|
|
decoder->sat = 32768;
|
|
i2c_set_clientdata(client, decoder);
|
|
|
|
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)
|
|
v4l_info(client, "%s found @ 0x%x (%s)\n", name,
|
|
client->addr << 1, client->adapter->name);
|
|
else
|
|
v4l_info(client, "chip (%02x:%04x) found @ 0x%x (%s)\n",
|
|
ver, pn, client->addr << 1, client->adapter->name);
|
|
|
|
vpx3220_init_client(client);
|
|
return 0;
|
|
}
|
|
|
|
static int vpx3220_remove(struct i2c_client *client)
|
|
{
|
|
kfree(i2c_get_clientdata(client));
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id vpx3220_id[] = {
|
|
{ "vpx3220a", 0 },
|
|
{ "vpx3216b", 0 },
|
|
{ "vpx3214c", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, vpx3220_id);
|
|
|
|
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
|
.name = "vpx3220",
|
|
.driverid = I2C_DRIVERID_VPX3220,
|
|
.command = vpx3220_command,
|
|
.probe = vpx3220_probe,
|
|
.remove = vpx3220_remove,
|
|
.id_table = vpx3220_id,
|
|
};
|