493d992501
Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Adam Jackson <ajax@redhat.com>
823 lines
21 KiB
C
823 lines
21 KiB
C
/* TODO: clean up/fix CC code */
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "xf86.h"
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#include "xf86i2c.h"
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#include "bt829.h"
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#include "i2c_def.h"
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/* Changing the following settings (especially VCROP) may */
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/* require modifying code that calls this driver. */
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#define HCROP 0 /* amount to crop from the left and right edges */
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#define VCROP 0 /* amount to crop from the top and bottom edges */
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#define BTVERSION (bt->id>>4)
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#define H(X) ( ((X)>>8) & 0xFF )
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#define L(X) ( (X) & 0xFF )
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#define LIMIT(X,A,B) (((X)<(A)) ? (A) : ((X)>(B)) ? (B) : (X) )
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/* Bt829 family chip ID's */
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#define BT815 0x02
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#define BT817 0x06
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#define BT819 0x07
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#define BT827 0x0C
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#define BT829 0x0E
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/* Bt829 registers */
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#define STATUS 0x00 /* Device Status */
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#define IFORM 0x01 /* Input Format */
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#define TDEC 0x02 /* Temporal Decimation */
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#define CROP 0x03 /* MSB Cropping */
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#define VDELAY_LO 0x04 /* Vertical Delay */
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#define VACTIVE_LO 0x05 /* Vertical Active */
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#define HDELAY_LO 0x06 /* Horizontal Delay */
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#define HACTIVE_LO 0x07 /* Horizontal Active */
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#define HSCALE_HI 0x08 /* Horizontal Scaling */
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#define HSCALE_LO 0x09 /* Horizontal Scaling */
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#define BRIGHT 0x0A /* Brightness Control */
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#define CONTROL 0x0B /* Miscellaneous Control */
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#define CONTRAST_LO 0x0C /* Luma Gain (Contrast) */
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#define SAT_U_LO 0x0D /* Chroma (U) Gain (Saturation) */
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#define SAT_V_LO 0x0E /* Chroma (V) Gain (Saturation) */
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#define HUE 0x0F /* Hue Control */
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#define SCLOOP 0x10 /* SC Loop Control */
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#define WC_UP 0x11 /* White Crush Up Count */
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#define OFORM 0x12 /* Output Format */
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#define VSCALE_HI 0x13 /* Vertical Scaling */
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#define VSCALE_LO 0x14 /* Vertical Scaling */
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#define TEST 0x15 /* Test Control */
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#define VPOLE 0x16 /* Video Timing Polarity */
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#define IDCODE 0x17 /* ID Code */
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#define ADELAY 0x18 /* AGC Delay */
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#define BDELAY 0x19 /* Burst Gate Delay */
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#define ADC 0x1A /* ADC Interface */
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#define VTC 0x1B /* Video Timing Control */
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#define CC_STATUS 0x1C /* Extended Data Services/Closed Capt Status */
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#define CC_DATA 0x1D /* Extended Data Services/Closed Capt Data */
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#define WC_DN 0x1E /* White Crush Down Count */
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#define SRESET 0x1F /* Software Reset */
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#define P_IO 0x3F /* Programmable I/O */
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static CARD8
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btread(BT829Ptr bt, CARD8 reg)
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{
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CARD8 v;
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I2C_WriteRead(&(bt->d), ®, 1, &v, 1);
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return v;
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}
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static void
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btwrite(BT829Ptr bt, CARD8 reg, CARD8 val)
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{
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CARD8 data[2];
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data[0] = reg;
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data[1] = val;
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I2C_WriteRead(&(bt->d), data, 2, NULL, 0);
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}
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/*
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* Register access
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*/
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static void
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btwrite_status(BT829Ptr bt)
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{ /* STATUS */
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btwrite(bt, STATUS, 0x00); /* clear */
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}
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static void
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btwrite_iform(BT829Ptr bt)
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{ /* IFORM */
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int xtsel;
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switch (bt->format) {
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case BT829_NTSC:
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case BT829_NTSC_JAPAN:
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case BT829_PAL_M:
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case BT829_PAL_N_COMB: /* gatos says xtsel = 2 */
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xtsel = 1;
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break;
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case BT829_PAL:
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case BT829_PAL_N:
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case BT829_SECAM:
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xtsel = 2;
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break;
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default: /* shouldn't get here */
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xtsel = 3; /* hardware default */
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break;
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}
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btwrite(bt, IFORM, (bt->mux << 5) | (xtsel << 3) | bt->format);
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}
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static void
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btwrite_tdec(BT829Ptr bt)
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{ /* TDEC */
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/* use default */
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}
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static void
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btwrite_crop(BT829Ptr bt)
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{ /* CROP */
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btwrite(bt, CROP, (H(bt->vdelay) << 6) | (H(bt->vactive) << 4) |
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(H(bt->hdelay) << 2) | H(bt->width));
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}
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static void
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btwrite_vdelay_lo(BT829Ptr bt)
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{ /* VDELAY_LO */
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btwrite(bt, VDELAY_LO, L(bt->vdelay));
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}
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static void
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btwrite_vactive_lo(BT829Ptr bt)
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{ /* VACTIVE_LO */
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btwrite(bt, VACTIVE_LO, L(bt->vactive));
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}
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static void
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btwrite_hdelay_lo(BT829Ptr bt)
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{ /* HDELAY_LO */
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btwrite(bt, HDELAY_LO, L(bt->hdelay));
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}
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static void
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btwrite_hactive_lo(BT829Ptr bt)
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{ /* HACTIVE_LO */
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btwrite(bt, HACTIVE_LO, L(bt->width));
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}
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static void
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btwrite_hscale_hi(BT829Ptr bt)
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{ /* HSCALE_HI */
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btwrite(bt, HSCALE_HI, H(bt->hscale));
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}
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static void
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btwrite_hscale_lo(BT829Ptr bt)
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{ /* HSCALE_LO */
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btwrite(bt, HSCALE_LO, L(bt->hscale));
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}
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static void
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btwrite_bright(BT829Ptr bt)
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{ /* BRIGHT */
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btwrite(bt, BRIGHT, bt->brightness);
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}
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static void
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btwrite_control(BT829Ptr bt)
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{ /* CONTROL */
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int ldec;
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/* The data sheet says ldec should always be 0 for SECAM */
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/* but the picture quality is better with ldec = 1 */
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ldec = (bt->width > 360); /* gatos says 384 */
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btwrite(bt, CONTROL, ((bt->mux == bt->svideo_mux) ? 0xC0 : 0x00) | /* LNOTCH and COMP */
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(ldec << 5) | (H(bt->contrast) << 2) | (H(bt->sat_u) << 1) | H(bt->
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sat_v));
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}
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static void
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btwrite_contrast_lo(BT829Ptr bt)
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{ /* CONTRAST_LO */
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btwrite(bt, CONTRAST_LO, L(bt->contrast));
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}
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static void
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btwrite_sat_u_lo(BT829Ptr bt)
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{ /* SAT_U_LO */
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btwrite(bt, SAT_U_LO, L(bt->sat_u));
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}
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static void
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btwrite_sat_v_lo(BT829Ptr bt)
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{ /* SAT_V_LO */
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btwrite(bt, SAT_V_LO, L(bt->sat_v));
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}
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static void
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btwrite_hue(BT829Ptr bt)
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{ /* HUE */
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btwrite(bt, HUE, bt->hue);
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}
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static void
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btwrite_scloop(BT829Ptr bt)
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{ /* SCLOOP */
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if (BTVERSION >= BT827) {
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btwrite(bt, SCLOOP, (bt->format == BT829_SECAM) ? 0x10 : 0x00 /* QCIF or AUTO */
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);
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}
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}
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static void
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btwrite_wc_up(BT829Ptr bt)
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{ /* WC_UP */
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if (BTVERSION >= BT827) {
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/* use default */
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}
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}
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static void
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btwrite_oform(BT829Ptr bt)
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{ /* OFORM */
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btwrite(bt, OFORM, (bt->code << 3) | (bt->len << 2) | 0x02 /* RANGE = 0, CORE = 0, VBI_FRAME = 0, OES = 2 (default) */
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);
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}
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static void
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btwrite_vscale_hi(BT829Ptr bt)
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{ /* VSCALE_HI */
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btwrite(bt, VSCALE_HI, H(bt->vscale) | 0x60 /* YCOMB = 0, COMB = 1, INT = 1 (default) */
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);
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}
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static void
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btwrite_vscale_lo(BT829Ptr bt)
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{ /* VSCALE_LO */
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btwrite(bt, VSCALE_LO, L(bt->vscale));
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}
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/* TEST should not be written to */
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static void
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btwrite_vpole(BT829Ptr bt)
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{ /* VPOLE */
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btwrite(bt, VPOLE, (bt->out_en << 7));
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}
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/* IDCODE is read only */
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static void
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btwrite_adelay(BT829Ptr bt)
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{ /* ADELAY */
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switch (bt->format) {
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case BT829_NTSC:
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case BT829_NTSC_JAPAN:
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case BT829_PAL_M:
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btwrite(bt, ADELAY, 104);
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break;
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case BT829_PAL:
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case BT829_PAL_N:
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case BT829_SECAM:
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case BT829_PAL_N_COMB:
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btwrite(bt, ADELAY, 127);
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break;
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default: /* shouldn't get here */
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btwrite(bt, ADELAY, 104); /* hardware default */
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break;
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}
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}
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static void
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btwrite_bdelay(BT829Ptr bt)
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{ /* BDELAY */
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switch (bt->format) {
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case BT829_NTSC:
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case BT829_NTSC_JAPAN:
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case BT829_PAL_M:
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btwrite(bt, BDELAY, 93);
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break;
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case BT829_PAL:
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case BT829_PAL_N:
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case BT829_PAL_N_COMB:
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btwrite(bt, BDELAY, 114);
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break;
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case BT829_SECAM:
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btwrite(bt, BDELAY, 160);
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break;
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default: /* shouldn't get here */
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btwrite(bt, BDELAY, 93); /* hardware default */
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break;
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}
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}
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static void
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btwrite_adc(BT829Ptr bt)
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{ /* ADC */
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btwrite(bt, ADC, bt->mux == bt->svideo_mux ? 0x80 : 0x82); /* CSLEEP = 0 or 1 */
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}
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static void
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btwrite_vtc(BT829Ptr bt)
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{ /* VTC */
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int vfilt = 0; /* hardware default */
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if (BTVERSION > BT827) { /* gatos says >= BT827 */
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switch (bt->format) {
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case BT829_NTSC:
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case BT829_NTSC_JAPAN:
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case BT829_PAL_M:
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case BT829_PAL_N_COMB: /* gatos groups with BT829_PAL */
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if (bt->width <= 360)
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vfilt = 1; /* gatos says <= 240 */
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if (bt->width <= 180)
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vfilt = 2; /* gatos says <= 120 */
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if (bt->width <= 90)
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vfilt = 3; /* gatos says <= 60 */
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break;
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case BT829_PAL:
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case BT829_PAL_N:
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case BT829_SECAM:
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if (bt->width <= 384)
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vfilt = 1;
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if (bt->width <= 192)
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vfilt = 2;
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if (bt->width <= 96)
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vfilt = 3;
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break;
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default: /* shouldn't get here */
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break; /* use hardware default */
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}
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btwrite(bt, VTC, (bt->vbien << 4) | (bt->vbifmt << 3) | vfilt);
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}
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}
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static void
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btwrite_cc_status(BT829Ptr bt)
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{ /* CC_STATUS *//* FIXME: ATI specific */
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if (BTVERSION >= BT827) {
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if (bt->ccmode == 0)
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btwrite(bt, CC_STATUS, 0x00);
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/* 0x40 is activate to set the CCVALID line. Not required yet */
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else
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btwrite(bt, CC_STATUS, (bt->ccmode << 4) | 0x40);
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}
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}
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/* CC_DATA is read only */
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static void
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btwrite_wc_dn(BT829Ptr bt)
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{ /* WC_DN */
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if (BTVERSION >= BT827) {
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/* use default */
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}
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}
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static void
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bt_reset(BT829Ptr bt)
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{ /* SRESET */
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btwrite(bt, SRESET, 0x0); /* Reset all registers */
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}
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static void
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btwrite_p_io(BT829Ptr bt)
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{ /* P_IO */
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if (BTVERSION >= BT827) {
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btwrite(bt, P_IO, bt->p_io);
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}
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}
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/*
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* Deal with dependencies
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*/
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static void
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propagate_changes(BT829Ptr bt)
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{
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CARD16 hdelay, unscaled_hdelay, vdelay, hscale, vscale;
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int htotal, vactive;
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switch (bt->format) {
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case BT829_NTSC:
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case BT829_NTSC_JAPAN:
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case BT829_PAL_M:
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vdelay = 22;
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htotal = 754;
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vactive = 480;
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unscaled_hdelay = 135;
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break;
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case BT829_PAL:
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case BT829_PAL_N:
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vdelay = (bt->tunertype == 5) ? 34 : 22;
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htotal = 922;
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vactive = 576;
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unscaled_hdelay = 186;
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break;
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case BT829_SECAM:
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vdelay = 34;
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htotal = 922;
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vactive = 576;
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unscaled_hdelay = 186;
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break;
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case BT829_PAL_N_COMB:
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vdelay = (bt->tunertype == 5) ? 34 : 22; /* windows says 22 */
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htotal = 754; /* gatos and windows say 922 */
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vactive = 576;
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unscaled_hdelay = 135; /* gatos and windows say 186 */
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break;
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default: /* shouldn't get here */
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vdelay = 22; /* hardware default */
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htotal = 754;
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vactive = 480; /* hardware default */
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unscaled_hdelay = 135;
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break;
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}
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bt->htotal = htotal; /* Used for error checking in bt829_SetCaptSize */
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hscale = 4096 * htotal / (bt->width + 2 * HCROP) - 4096;
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hdelay =
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(HCROP + (bt->width + 2 * HCROP) * unscaled_hdelay / htotal) & 0x3FE;
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vactive = vactive - 2 * VCROP;
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vdelay = vdelay + VCROP;
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vscale = (0x10000 - (512 * vactive / bt->height - 512)) & 0x1FFF;
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if ((hdelay != bt->hdelay) || (vdelay != bt->vdelay) ||
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(vactive != bt->vactive) || (hscale != bt->hscale) ||
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(vscale != bt->vscale)) {
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bt->hdelay = hdelay;
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bt->vdelay = vdelay;
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bt->vactive = vactive;
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bt->hscale = hscale;
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bt->vscale = vscale;
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btwrite_crop(bt);
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btwrite_vdelay_lo(bt);
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btwrite_vactive_lo(bt);
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btwrite_hdelay_lo(bt);
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btwrite_hscale_hi(bt);
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btwrite_hscale_lo(bt);
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btwrite_control(bt);
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btwrite_vscale_hi(bt);
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btwrite_vscale_lo(bt);
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}
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}
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static void
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write_all(BT829Ptr bt)
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{
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bt_reset(bt);
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propagate_changes(bt); /* ensure consistency */
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btwrite_iform(bt);
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btwrite_tdec(bt);
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btwrite_crop(bt);
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btwrite_vdelay_lo(bt);
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btwrite_vactive_lo(bt);
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btwrite_hdelay_lo(bt);
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btwrite_hactive_lo(bt);
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btwrite_hscale_hi(bt);
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btwrite_hscale_lo(bt);
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btwrite_bright(bt);
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btwrite_control(bt);
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btwrite_contrast_lo(bt);
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btwrite_sat_u_lo(bt);
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btwrite_sat_v_lo(bt);
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btwrite_hue(bt);
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btwrite_scloop(bt);
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btwrite_wc_up(bt);
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btwrite_oform(bt);
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btwrite_vscale_hi(bt);
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btwrite_vscale_lo(bt);
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btwrite_vpole(bt);
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btwrite_adelay(bt);
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btwrite_bdelay(bt);
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btwrite_adc(bt);
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btwrite_vtc(bt);
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/* btwrite_cc_status(bt); *//* FIXME: CC code needs cleaning */
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btwrite_wc_dn(bt);
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btwrite_p_io(bt);
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}
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/*
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* Public functions
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*/
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BT829Ptr
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bt829_Detect(I2CBusPtr b, I2CSlaveAddr addr)
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{
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BT829Ptr bt;
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I2CByte a;
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char *devname;
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bt = calloc(1, sizeof(BT829Rec));
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if (bt == NULL)
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return NULL;
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bt->d.DevName = strdup("BT829 video decoder");
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bt->d.SlaveAddr = addr;
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bt->d.pI2CBus = b;
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bt->d.NextDev = NULL;
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bt->d.StartTimeout = b->StartTimeout;
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bt->d.BitTimeout = b->BitTimeout;
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bt->d.AcknTimeout = b->AcknTimeout;
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bt->d.ByteTimeout = b->ByteTimeout;
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|
|
if (!I2C_WriteRead(&(bt->d), NULL, 0, &a, 1)) {
|
|
free(bt);
|
|
return NULL;
|
|
}
|
|
|
|
bt->id = btread(bt, IDCODE);
|
|
|
|
free((void *) bt->d.DevName);
|
|
bt->d.DevName = devname = calloc(200, sizeof(char));
|
|
switch (BTVERSION) {
|
|
case BT815:
|
|
sprintf(devname, "bt815a video decoder, revision %d",
|
|
bt->id & 0xf);
|
|
break;
|
|
case BT817:
|
|
sprintf(devname, "bt817a video decoder, revision %d",
|
|
bt->id & 0xf);
|
|
break;
|
|
case BT819:
|
|
sprintf(devname, "bt819a video decoder, revision %d",
|
|
bt->id & 0xf);
|
|
break;
|
|
case BT827:
|
|
sprintf(devname, "bt827a/b video decoder, revision %d",
|
|
bt->id & 0xf);
|
|
break;
|
|
case BT829:
|
|
sprintf(devname, "bt829a/b video decoder, revision %d",
|
|
bt->id & 0xf);
|
|
break;
|
|
default:
|
|
sprintf(devname,
|
|
"bt8xx/unknown video decoder version %d, revision %d",
|
|
bt->id >> 4, bt->id & 0xf);
|
|
break;
|
|
}
|
|
|
|
/* set default parameters */
|
|
if (!I2CDevInit(&(bt->d))) {
|
|
free(bt);
|
|
return NULL;
|
|
}
|
|
|
|
bt->tunertype = 1;
|
|
|
|
bt->brightness = 0; /* hardware default */
|
|
bt->ccmode = 0;
|
|
bt->code = 0; /* hardware default */
|
|
bt->contrast = 216; /* hardware default */
|
|
bt->format = BT829_NTSC;
|
|
bt->height = 480; /* hardware default for vactive */
|
|
bt->hue = 0; /* hardware default */
|
|
bt->len = 1; /* hardware default */
|
|
bt->mux = BT829_MUX0; /* hardware default */
|
|
bt->out_en = 0; /* hardware default */
|
|
bt->p_io = 0; /* hardware default */
|
|
bt->sat_u = 254; /* hardware default */
|
|
bt->sat_v = 180; /* hardware default */
|
|
bt->vbien = 0; /* hardware default */
|
|
bt->vbifmt = 0; /* hardware default */
|
|
bt->width = 640; /* hardware default for hactive */
|
|
|
|
bt->hdelay = 120; /* hardware default */
|
|
bt->hscale = 684; /* hardware default */
|
|
bt->vactive = 480; /* hardware default */
|
|
bt->vdelay = 22; /* hardware default */
|
|
bt->vscale = 0; /* hardware default */
|
|
|
|
bt->htotal = 754; /* NTSC */
|
|
bt->svideo_mux = 0; /* no s-video */
|
|
|
|
return bt;
|
|
}
|
|
|
|
int
|
|
bt829_ATIInit(BT829Ptr bt)
|
|
{
|
|
bt->code = 1;
|
|
bt->len = 0;
|
|
bt->vbien = 1;
|
|
bt->vbifmt = 1;
|
|
bt->svideo_mux = BT829_MUX1;
|
|
|
|
write_all(bt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bt829_SetFormat(BT829Ptr bt, CARD8 format)
|
|
{
|
|
if ((format < 1) || (format > 7))
|
|
return -1;
|
|
if ((BTVERSION <= BT819) && (format != BT829_NTSC) && (format != BT829_PAL))
|
|
return -1;
|
|
if (format == bt->format)
|
|
return 0;
|
|
bt->format = format;
|
|
propagate_changes(bt);
|
|
btwrite_iform(bt);
|
|
btwrite_scloop(bt);
|
|
btwrite_adelay(bt);
|
|
btwrite_bdelay(bt);
|
|
btwrite_vtc(bt);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bt829_SetMux(BT829Ptr bt, CARD8 mux)
|
|
{
|
|
if ((mux < 1) || (mux > 3))
|
|
return -1;
|
|
if (mux == bt->mux)
|
|
return 0;
|
|
bt->mux = mux;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_iform(bt);
|
|
btwrite_control(bt);
|
|
btwrite_adc(bt);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
bt829_SetBrightness(BT829Ptr bt, int brightness)
|
|
{
|
|
brightness = LIMIT(brightness, -1000, 999); /* ensure -128 <= brightness <= 127 below */
|
|
brightness = (128 * brightness) / 1000;
|
|
if (brightness == bt->brightness)
|
|
return;
|
|
bt->brightness = brightness;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_bright(bt);
|
|
}
|
|
|
|
void
|
|
bt829_SetContrast(BT829Ptr bt, int contrast)
|
|
{
|
|
contrast = LIMIT(contrast, -1000, 1000);
|
|
contrast = (216 * (contrast + 1000)) / 1000;
|
|
if (contrast == bt->contrast)
|
|
return;
|
|
bt->contrast = contrast;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_control(bt);
|
|
btwrite_contrast_lo(bt);
|
|
}
|
|
|
|
void
|
|
bt829_SetSaturation(BT829Ptr bt, int saturation)
|
|
{
|
|
CARD16 sat_u, sat_v;
|
|
|
|
saturation = LIMIT(saturation, -1000, 1000);
|
|
sat_u = (254 * (saturation + 1000)) / 1000;
|
|
sat_v = (180 * (saturation + 1000)) / 1000;
|
|
if ((sat_u == bt->sat_u) && (sat_v == bt->sat_v))
|
|
return;
|
|
bt->sat_u = sat_u;
|
|
bt->sat_v = sat_v;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_control(bt);
|
|
btwrite_sat_u_lo(bt);
|
|
btwrite_sat_v_lo(bt);
|
|
}
|
|
|
|
void
|
|
bt829_SetTint(BT829Ptr bt, int hue)
|
|
{
|
|
hue = LIMIT(hue, -1000, 999); /* ensure -128 <= hue <= 127 below */
|
|
hue = (128 * hue) / 1000;
|
|
if (hue == bt->hue)
|
|
return;
|
|
bt->hue = hue;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_hue(bt);
|
|
}
|
|
|
|
int
|
|
bt829_SetCaptSize(BT829Ptr bt, int width, int height)
|
|
{
|
|
if ((width > bt->htotal - 2 * HCROP) ||
|
|
(16 * width < bt->htotal - 32 * HCROP))
|
|
return -1;
|
|
if ((height > bt->vactive) || (16 * height < bt->vactive))
|
|
return -1;
|
|
if ((width == bt->width) && (height == bt->height))
|
|
return 0;
|
|
bt->width = width;
|
|
bt->height = height;
|
|
propagate_changes(bt);
|
|
btwrite_crop(bt);
|
|
btwrite_hactive_lo(bt);
|
|
btwrite_control(bt);
|
|
btwrite_vtc(bt);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bt829_SetCC(BT829Ptr bt)
|
|
{ /* FIXME: should take ccmode as a parameter */
|
|
if (BTVERSION < BT827)
|
|
return -1; /* can't do it */
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_cc_status(bt);
|
|
/* we write to STATUS to reset the CCVALID flag */
|
|
if (bt->ccmode != 0)
|
|
btwrite_status(bt);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
bt829_SetOUT_EN(BT829Ptr bt, BOOL out_en)
|
|
{
|
|
out_en = (out_en != 0);
|
|
if (out_en == bt->out_en)
|
|
return;
|
|
bt->out_en = out_en;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_vpole(bt);
|
|
}
|
|
|
|
void
|
|
bt829_SetP_IO(BT829Ptr bt, CARD8 p_io)
|
|
{
|
|
if (p_io == bt->p_io)
|
|
return;
|
|
bt->p_io = p_io;
|
|
/* propagate_changes(bt); *//* no dependencies */
|
|
btwrite_p_io(bt);
|
|
}
|
|
|
|
#define BTREAD(R) btread(bt,(R))
|
|
|
|
#if 0
|
|
|
|
void
|
|
bt829_getCCdata(BT829Ptr bt, struct CCdata *data)
|
|
{
|
|
CARD8 status;
|
|
|
|
data->num_valid = 0;
|
|
/* wait for buffer to be half full (means 8/16 bytes)
|
|
* either 4 (one of CC/EDS) or 2 (both CC/EDS) frames */
|
|
if (!(BTREAD(STATUS) & 0x04))
|
|
return; /* could comment this line */
|
|
for (; data->num_valid < CC_FIFO_SIZE; data->num_valid++) {
|
|
status = BTREAD(CC_STATUS);
|
|
if (!(status & 0x04))
|
|
break;
|
|
data->data[data->num_valid] = BTREAD(CC_DATA) & 0x7f;
|
|
/* stripped high bit (parity) */
|
|
data->status[data->num_valid] = (CCS_EDS * ((status & 0x02) >> 1)) |
|
|
(CCS_HIGH * (status & 0x01)) |
|
|
(CCS_OVER * ((status & 0x08) >> 3)) |
|
|
(CCS_PAR * ((status & 0x80) >> 7));
|
|
}
|
|
btwrite(bt, STATUS, 0x00); /* Reset CCVALID status bit */
|
|
return;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
/* Debug and report routines */
|
|
|
|
#define DUMPREG(REG) \
|
|
xf86DrvMsg(bt->d.pI2CBus->scrnIndex,X_INFO," %-12s (0x%02X) = 0x%02X\n", \
|
|
#REG,REG,BTREAD(REG))
|
|
|
|
/*static void bt829_dumpregs(BT829Ptr bt)
|
|
{
|
|
DUMPREG(STATUS);
|
|
DUMPREG(IFORM);
|
|
DUMPREG(TDEC);
|
|
DUMPREG(CROP);
|
|
DUMPREG(VDELAY_LO);
|
|
DUMPREG(VACTIVE_LO);
|
|
DUMPREG(HDELAY_LO);
|
|
DUMPREG(HACTIVE_LO);
|
|
DUMPREG(HSCALE_HI);
|
|
DUMPREG(HSCALE_LO);
|
|
DUMPREG(BRIGHT);
|
|
DUMPREG(CONTROL);
|
|
DUMPREG(CONTRAST_LO);
|
|
DUMPREG(SAT_U_LO);
|
|
DUMPREG(SAT_V_LO);
|
|
DUMPREG(HUE);
|
|
if (BTVERSION >= BT827) {
|
|
DUMPREG(SCLOOP);
|
|
DUMPREG(WC_UP) ; }
|
|
DUMPREG(OFORM);
|
|
DUMPREG(VSCALE_HI);
|
|
DUMPREG(VSCALE_LO);
|
|
DUMPREG(TEST);
|
|
DUMPREG(VPOLE);
|
|
DUMPREG(IDCODE);
|
|
DUMPREG(ADELAY);
|
|
DUMPREG(BDELAY);
|
|
DUMPREG(ADC);
|
|
if (BTVERSION >= BT827) {
|
|
DUMPREG(VTC);
|
|
DUMPREG(CC_STATUS);
|
|
DUMPREG(CC_DATA);
|
|
DUMPREG(WC_DN);
|
|
DUMPREG(P_IO) ; }
|
|
}*/
|