staticvoid cx18_av_init(struct cx18 *cx)
{ /* * The crystal freq used in calculations in this driver will be * 28.636360 MHz. * Aim to run the PLLs' VCOs near 400 MHz to minimize errors.
*/
/* video output drive strength */
cx18_av_and_or4(cx, CXADEC_PIN_CTRL2, ~0, 0x2);
/* reset video */
cx18_av_write4(cx, CXADEC_SOFT_RST_CTRL, 0x8000);
cx18_av_write4(cx, CXADEC_SOFT_RST_CTRL, 0);
/* * Disable Video Auto-config of the Analog Front End and Video PLL. * * Since we only use BT.656 pixel mode, which works for both 525 and 625 * line systems, it's just easier for us to set registers * 0x102 (CXADEC_CHIP_CTRL), 0x104-0x106 (CXADEC_AFE_CTRL), * 0x108-0x109 (CXADEC_PLL_CTRL1), and 0x10c-0x10f (CXADEC_VID_PLL_FRAC) * ourselves, than to run around cleaning up after the auto-config. * * (Note: my CX23418 chip doesn't seem to let the ACFG_DIS bit * get set to 1, but OTOH, it doesn't seem to do AFE and VID PLL * autoconfig either.) * * As a default, also turn off Dual mode for ADC2 and set ADC2 to CH3.
*/
cx18_av_and_or4(cx, CXADEC_CHIP_CTRL, 0xFFFBFFFF, 0x00120000);
/* Setup the Video and Aux/Audio PLLs */
cx18_av_init(cx);
/* set video to auto-detect */ /* Clear bits 11-12 to enable slow locking mode. Set autodetect mode */ /* set the comb notch = 1 */
cx18_av_and_or4(cx, CXADEC_MODE_CTRL, 0xFFF7E7F0, 0x02040800);
/* Enable wtw_en in CRUSH_CTRL (Set bit 22) */ /* Enable maj_sel in CRUSH_CTRL (Set bit 20) */
cx18_av_and_or4(cx, CXADEC_CRUSH_CTRL, ~0, 0x00500000);
/* Set VGA_TRACK_RANGE to 0x20 */
cx18_av_and_or4(cx, CXADEC_DFE_CTRL2, 0xFFFF00FF, 0x00002000);
/* * Initial VBI setup * VIP-1.1, 10 bit mode, enable Raw, disable sliced, * don't clamp raw samples when codes are in use, 1 byte user D-words, * IDID0 has line #, RP code V bit transition on VBLANK, data during * blanking intervals
*/
cx18_av_write4(cx, CXADEC_OUT_CTRL1, 0x4013252e);
/* Set the video input.
The setting in MODE_CTRL gets lost when we do the above setup */ /* EncSetSignalStd(dwDevNum, pEnc->dwSigStd); */ /* EncSetVideoInput(dwDevNum, pEnc->VidIndSelection); */
/* * Analog Front End (AFE) * Default to luma on ch1/ADC1, chroma on ch2/ADC2, SIF on ch3/ADC2 * bypass_ch[1-3] use filter * droop_comp_ch[1-3] disable * clamp_en_ch[1-3] disable * aud_in_sel ADC2 * luma_in_sel ADC1 * chroma_in_sel ADC2 * clamp_sel_ch[2-3] midcode * clamp_sel_ch1 video decoder * vga_sel_ch3 audio decoder * vga_sel_ch[1-2] video decoder * half_bw_ch[1-3] disable * +12db_ch[1-3] disable
*/
cx18_av_and_or4(cx, CXADEC_AFE_CTRL, 0xFF000000, 0x00005D00);
/* if(dwEnable && dw3DCombAvailable) { */ /* CxDevWrReg(CXADEC_SRC_COMB_CFG, 0x7728021F); */ /* } else { */ /* CxDevWrReg(CXADEC_SRC_COMB_CFG, 0x6628021F); */ /* } */
cx18_av_write4(cx, CXADEC_SRC_COMB_CFG, 0x6628021F);
default_volume = cx18_av_read(cx, 0x8d4); /* * Enforce the legacy volume scale mapping limits to avoid * -ERANGE errors when initializing the volume control
*/ if (default_volume > 228) { /* Bottom out at -96 dB, v4l2 vol range 0x2e00-0x2fff */
default_volume = 228;
cx18_av_write(cx, 0x8d4, 228);
} elseif (default_volume < 20) { /* Top out at + 8 dB, v4l2 vol range 0xfe00-0xffff */
default_volume = 20;
cx18_av_write(cx, 0x8d4, 20);
}
default_volume = (((228 - default_volume) >> 1) + 23) << 9;
state->volume->cur.val = state->volume->default_value = default_volume;
v4l2_ctrl_handler_setup(&state->hdl);
}
/* * Note: At the end of a field, there are 3 sets of half line duration * (double horizontal rate) pulses: * * 5 (625) or 6 (525) half-lines to blank for the vertical retrace * 5 (625) or 6 (525) vertical sync pulses of half line duration * 5 (625) or 6 (525) half-lines of equalization pulses
*/ if (std & V4L2_STD_625_50) { /* * The following relationships of half line counts should hold: * 625 = vblank656 + vactive * 10 = vblank656 - vblank = vsync pulses + equalization pulses * * vblank656: half lines after line 625/mid-313 of blanked video * vblank: half lines, after line 5/317, of blanked video * vactive: half lines of active video + * 5 half lines after the end of active video * * As far as I can tell: * vblank656 starts counting from the falling edge of the first * vsync pulse (start of line 1 or mid-313) * vblank starts counting from the after the 5 vsync pulses and * 5 or 4 equalization pulses (start of line 6 or 318) * * For 625 line systems the driver will extract VBI information * from lines 6-23 and lines 318-335 (but the slicer can only * handle 17 lines, not the 18 in the vblank region). * In addition, we need vblank656 and vblank to be one whole * line longer, to cover line 24 and 336, so the SAV/EAV RP * codes get generated such that the encoder can actually * extract line 23 & 335 (WSS). We'll lose 1 line in each field * at the top of the screen. * * It appears the 5 half lines that happen after active * video must be included in vactive (579 instead of 574), * otherwise the colors get badly displayed in various regions * of the screen. I guess the chroma comb filter gets confused * without them (at least when a PVR-350 is the PAL source).
*/
vblank656 = 48; /* lines 1 - 24 & 313 - 336 */
vblank = 38; /* lines 6 - 24 & 318 - 336 */
vactive = 579; /* lines 24 - 313 & 337 - 626 */
/* * For a 13.5 Mpps clock and 15,625 Hz line rate, a line is * 864 pixels = 720 active + 144 blanking. ITU-R BT.601 * specifies 12 luma clock periods or ~ 0.9 * 13.5 Mpps after * the end of active video to start a horizontal line, so that * leaves 132 pixels of hblank to ignore.
*/
hblank = 132;
hactive = 720;
/* * Burst gate delay (for 625 line systems) * Hsync leading edge to color burst rise = 5.6 us * Color burst width = 2.25 us * Gate width = 4 pixel clocks * (5.6 us + 2.25/2 us) * 13.5 Mpps + 4/2 clocks = 92.79 clocks
*/
burst = 93;
luma_lpf = 2; if (std & V4L2_STD_PAL) {
uv_lpf = 1;
comb = 0x20; /* sc = 4433618.75 * src_decimation/28636360 * 2^13 */
sc = 688700;
} elseif (std == V4L2_STD_PAL_Nc) {
uv_lpf = 1;
comb = 0x20; /* sc = 3582056.25 * src_decimation/28636360 * 2^13 */
sc = 556422;
} else { /* SECAM */
uv_lpf = 0;
comb = 0; /* (fr + fb)/2 = (4406260 + 4250000)/2 = 4328130 */ /* sc = 4328130 * src_decimation/28636360 * 2^13 */
sc = 672314;
}
} else { /* * The following relationships of half line counts should hold: * 525 = prevsync + vblank656 + vactive * 12 = vblank656 - vblank = vsync pulses + equalization pulses * * prevsync: 6 half-lines before the vsync pulses * vblank656: half lines, after line 3/mid-266, of blanked video * vblank: half lines, after line 9/272, of blanked video * vactive: half lines of active video * * As far as I can tell: * vblank656 starts counting from the falling edge of the first * vsync pulse (start of line 4 or mid-266) * vblank starts counting from the after the 6 vsync pulses and * 6 or 5 equalization pulses (start of line 10 or 272) * * For 525 line systems the driver will extract VBI information * from lines 10-21 and lines 273-284.
*/
vblank656 = 38; /* lines 4 - 22 & 266 - 284 */
vblank = 26; /* lines 10 - 22 & 272 - 284 */
vactive = 481; /* lines 23 - 263 & 285 - 525 */
/* * For a 13.5 Mpps clock and 15,734.26 Hz line rate, a line is * 858 pixels = 720 active + 138 blanking. The Hsync leading * edge should happen 1.2 us * 13.5 Mpps ~= 16 pixels after the * end of active video, leaving 122 pixels of hblank to ignore * before active video starts.
*/
hactive = 720;
hblank = 122;
luma_lpf = 1;
uv_lpf = 1;
switch (aud_input) { case CX18_AV_AUDIO_SERIAL1: case CX18_AV_AUDIO_SERIAL2: /* do nothing, use serial audio input */ break; case CX18_AV_AUDIO4:
afe_mux_cfg &= ~0x30;
ch[1] = SIF; break; case CX18_AV_AUDIO5:
afe_mux_cfg = (afe_mux_cfg & ~0x30) | 0x10;
ch[1] = SIF; break; case CX18_AV_AUDIO6:
afe_mux_cfg = (afe_mux_cfg & ~0x30) | 0x20;
ch[1] = SIF; break; case CX18_AV_AUDIO7:
afe_mux_cfg &= ~0xc0;
ch[2] = SIF; break; case CX18_AV_AUDIO8:
afe_mux_cfg = (afe_mux_cfg & ~0xc0) | 0x40;
ch[2] = SIF; break;
default:
CX18_ERR_DEV(sd, "0x%04x is not a valid audio input!\n",
aud_input); return -EINVAL;
}
/* Set up analog front end multiplexers */
cx18_av_write_expect(cx, 0x103, afe_mux_cfg, afe_mux_cfg, 0xf7); /* Set INPUT_MODE to Composite, S-Video, or Component */
cx18_av_and_or(cx, 0x401, ~0x6, input_mode);
/* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
adc2_cfg = cx18_av_read(cx, 0x102); if (ch[2] == NONE)
adc2_cfg &= ~0x2; /* No sig on CH3, set ADC2 to CH2 for input */ else
adc2_cfg |= 0x2; /* Signal on CH3, set ADC2 to CH3 for input */
/* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */ if (ch[1] != NONE && ch[2] != NONE)
adc2_cfg |= 0x4; /* Set dual mode */ else
adc2_cfg &= ~0x4; /* Clear dual mode */
cx18_av_write_expect(cx, 0x102, adc2_cfg, adc2_cfg, 0x17);
/* Configure the analog front end */
afe_cfg = cx18_av_read4(cx, CXADEC_AFE_CTRL);
afe_cfg &= 0xff000000;
afe_cfg |= 0x00005000; /* CHROMA_IN, AUD_IN: ADC2; LUMA_IN: ADC1 */ if (ch[1] != NONE && ch[2] != NONE)
afe_cfg |= 0x00000030; /* half_bw_ch[2-3] since in dual mode */
for (i = 0; i < 3; i++) { switch (ch[i]) { default: case NONE: /* CLAMP_SEL = Fixed to midcode clamp level */
afe_cfg |= (0x00000200 << i); break; case CVBS: case Y: if (i > 0)
afe_cfg |= 0x00002000; /* LUMA_IN_SEL: ADC2 */ break; case C: case Pb: case Pr: /* CLAMP_SEL = Fixed to midcode clamp level */
afe_cfg |= (0x00000200 << i); if (i == 0 && ch[i] == C)
afe_cfg &= ~0x00001000; /* CHROMA_IN_SEL ADC1 */ break; case SIF: /* * VGA_GAIN_SEL = Audio Decoder * CLAMP_SEL = Fixed to midcode clamp level
*/
afe_cfg |= (0x00000240 << i); if (i == 0)
afe_cfg &= ~0x00004000; /* AUD_IN_SEL ADC1 */ break;
}
}
CX18_DEBUG_INFO_DEV(sd, "changing video std to fmt %i\n", fmt);
/* Follow step 9 of section 3.16 in the cx18_av datasheet. Without this PAL may display a vertical ghosting effect.
This happens for example with the Yuan MPC622. */ if (fmt >= 4 && fmt < 8) { /* Set format to NTSC-M */
cx18_av_and_or(cx, 0x400, ~0xf, 1); /* Turn off LCOMB */
cx18_av_and_or(cx, 0x47b, ~6, 0);
}
cx18_av_and_or(cx, 0x400, ~0x2f, fmt | 0x20);
cx18_av_and_or(cx, 0x403, ~0x3, pal_m);
cx18_av_std_setup(cx);
input_change(cx); return 0;
}
/* * This adjustment reflects the excess of vactive, set in * cx18_av_std_setup(), above standard values: * * 480 + 1 for 60 Hz systems * 576 + 3 for 50 Hz systems
*/
Vlines = fmt->height + (is_50Hz ? 3 : 1);
/* * Invalid height and width scaling requests are: * 1. width less than 1/16 of the source width * 2. width greater than the source width * 3. height less than 1/8 of the source height * 4. height greater than the source height
*/ if ((fmt->width * 16 < Hsrc) || (Hsrc < fmt->width) ||
(Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
CX18_ERR_DEV(sd, "%dx%d is not a valid size!\n",
fmt->width, fmt->height); return -ERANGE;
}
if (format->which == V4L2_SUBDEV_FORMAT_TRY) return 0;
switch (mod_det_stat0) { case 0x00: p = "mono"; break; case 0x01: p = "stereo"; break; case 0x02: p = "dual"; break; case 0x04: p = "tri"; break; case 0x10: p = "mono with SAP"; break; case 0x11: p = "stereo with SAP"; break; case 0x12: p = "dual with SAP"; break; case 0x14: p = "tri with SAP"; break; case 0xfe: p = "forced mode"; break; default: p = "not defined"; break;
}
CX18_INFO_DEV(sd, "Detected audio mode: %s\n", p);
switch (mod_det_stat1) { case 0x00: p = "not defined"; break; case 0x01: p = "EIAJ"; break; case 0x02: p = "A2-M"; break; case 0x03: p = "A2-BG"; break; case 0x04: p = "A2-DK1"; break; case 0x05: p = "A2-DK2"; break; case 0x06: p = "A2-DK3"; break; case 0x07: p = "A1 (6.0 MHz FM Mono)"; break; case 0x08: p = "AM-L"; break; case 0x09: p = "NICAM-BG"; break; case 0x0a: p = "NICAM-DK"; break; case 0x0b: p = "NICAM-I"; break; case 0x0c: p = "NICAM-L"; break; case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break; case 0x0e: p = "IF FM Radio"; break; case 0x0f: p = "BTSC"; break; case 0x10: p = "detected chrominance"; break; case 0xfd: p = "unknown audio standard"; break; case 0xfe: p = "forced audio standard"; break; case 0xff: p = "no detected audio standard"; break; default: p = "not defined"; break;
}
CX18_INFO_DEV(sd, "Detected audio standard: %s\n", p);
CX18_INFO_DEV(sd, "Audio muted: %s\n",
(mute_ctl & 0x2) ? "yes" : "no");
CX18_INFO_DEV(sd, "Audio microcontroller: %s\n",
(download_ctl & 0x10) ? "running" : "stopped");
switch (audio_config >> 4) { case 0x00: p = "undefined"; break; case 0x01: p = "BTSC"; break; case 0x02: p = "EIAJ"; break; case 0x03: p = "A2-M"; break; case 0x04: p = "A2-BG"; break; case 0x05: p = "A2-DK1"; break; case 0x06: p = "A2-DK2"; break; case 0x07: p = "A2-DK3"; break; case 0x08: p = "A1 (6.0 MHz FM Mono)"; break; case 0x09: p = "AM-L"; break; case 0x0a: p = "NICAM-BG"; break; case 0x0b: p = "NICAM-DK"; break; case 0x0c: p = "NICAM-I"; break; case 0x0d: p = "NICAM-L"; break; case 0x0e: p = "FM radio"; break; case 0x0f: p = "automatic detection"; break; default: p = "undefined"; break;
}
CX18_INFO_DEV(sd, "Configured audio standard: %s\n", p);
if ((audio_config >> 4) < 0xF) { switch (audio_config & 0xF) { case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break; case 0x01: p = "MONO2 (LANGUAGE B)"; break; case 0x02: p = "MONO3 (STEREO forced MONO)"; break; case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break; case 0x04: p = "STEREO"; break; case 0x05: p = "DUAL1 (AC)"; break; case 0x06: p = "DUAL2 (BC)"; break; case 0x07: p = "DUAL3 (AB)"; break; default: p = "undefined";
}
CX18_INFO_DEV(sd, "Configured audio mode: %s\n", p);
} else { switch (audio_config & 0xF) { case 0x00: p = "BG"; break; case 0x01: p = "DK1"; break; case 0x02: p = "DK2"; break; case 0x03: p = "DK3"; break; case 0x04: p = "I"; break; case 0x05: p = "L"; break; case 0x06: p = "BTSC"; break; case 0x07: p = "EIAJ"; break; case 0x08: p = "A2-M"; break; case 0x09: p = "FM Radio (4.5 MHz)"; break; case 0x0a: p = "FM Radio (5.5 MHz)"; break; case 0x0b: p = "S-Video"; break; case 0x0f: p = "automatic standard and mode detection"; break; default: p = "undefined"; break;
}
CX18_INFO_DEV(sd, "Configured audio system: %s\n", p);
}
switch (pref_mode & 0xf) { case 0: p = "mono/language A"; break; case 1: p = "language B"; break; case 2: p = "language C"; break; case 3: p = "analog fallback"; break; case 4: p = "stereo"; break; case 5: p = "language AC"; break; case 6: p = "language BC"; break; case 7: p = "language AB"; break; default: p = "undefined"; break;
}
CX18_INFO_DEV(sd, "Preferred audio mode: %s\n", p);
if ((audio_config & 0xf) == 0xf) { switch ((afc0 >> 3) & 0x1) { case 0: p = "system DK"; break; case 1: p = "system L"; break;
}
CX18_INFO_DEV(sd, "Selected 65 MHz format: %s\n", p);
switch (afc0 & 0x7) { case 0: p = "Chroma"; break; case 1: p = "BTSC"; break; case 2: p = "EIAJ"; break; case 3: p = "A2-M"; break; case 4: p = "autodetect"; break; default: p = "undefined"; break;
}
CX18_INFO_DEV(sd, "Selected 45 MHz format: %s\n", p);
}
}
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