From f81294f1f629e9f7787ec295bab99b0efe38d9e7 Mon Sep 17 00:00:00 2001 From: Rudolf Cornelissen Date: Sun, 10 Jul 2005 18:00:28 +0000 Subject: [PATCH] added via accelerant, a copy of skeleton driver yet. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13610 a95241bf-73f2-0310-859d-f6bbb57e9c96 --- src/add-ons/accelerants/via/engine/tvout.c | 1215 ++++++++++++++++++++ 1 file changed, 1215 insertions(+) create mode 100644 src/add-ons/accelerants/via/engine/tvout.c diff --git a/src/add-ons/accelerants/via/engine/tvout.c b/src/add-ons/accelerants/via/engine/tvout.c new file mode 100644 index 0000000000..577f1328b9 --- /dev/null +++ b/src/add-ons/accelerants/via/engine/tvout.c @@ -0,0 +1,1215 @@ +/* Authors: + Mark Watson 2000, + Rudolf Cornelissen 1/2003-12/2003 + + Thanx to Petr Vandrovec for writing matroxfb. +*/ + +#define MODULE_BIT 0x00100000 + +#include "std.h" + +typedef struct { + uint32 h_total; + uint32 h_display; + uint32 h_sync_length; + uint32 front_porch; + uint32 back_porch; + uint32 color_burst; + uint32 v_total; + float chroma_subcarrier; +} gx50_maven_timing; + +void gxx0_maventv_PAL_init(uint8* buffer); +void gxx0_maventv_NTSC_init(uint8* buffer); +void gx50_maventv_PAL_timing(gx50_maven_timing *m_timing); +void gx50_maventv_NTSC_timing(gx50_maven_timing *m_timing); + +//fixme: setup fixed CRTC2 modes for all modes and block other modes: +// - 640x480, 800x600, 1024x768 NTSC and PAL overscan compensated modes (desktop) +// - 640x480, 720x480 NTSC and 768x576, 720x576 non-overscan compensated modes (video) +//fixme: try to implement 'fast' and 'slow' settings for all modes, +// so buffer duplication or skipping won't be neccesary for realtime video. +//fixme: try to setup the CRTC2 in interlaced mode for the video modes on <= G400MAX cards. + +/* find 'exact' valid video PLL setting */ +status_t g100_g400max_maventv_vid_pll_find( + display_mode target, unsigned int * ht_new, unsigned int * ht_last_line, + uint8 * m_result, uint8 * n_result, uint8 * p_result) +{ + int m = 0, n = 0, p = 0, m_max; + float diff, diff_smallest = 999999999; + int best[5], h_total_mod; + float fields_sec, f_vco; + /* We need to be exact, so work with clockperiods per field instead of with frequency. + * Make sure however we truncate these clocks to be integers! + * (The NTSC field frequency would otherwise prevent the 'whole number of clocks per field' + * check done in this routine later on...) */ + uint32 vco_clks_field, max_pclks_field, req_pclks_field; + /* We need this variable to be a float, because we need to be able to verify if this + * represents a whole number of clocks per field later on! */ + float calc_pclks_field; + + LOG(2,("MAVENTV: searching for EXACT videoclock match\n")); + + /* determine the max. reference-frequency postscaler setting for the current card */ + //fixme: check G100 and G200 m_max if exist and possible... + switch(si->ps.card_type) + { +/* case G100: + LOG(2,("MAVENTV: G100 restrictions apply\n")); + m_max = 32; + break; + case G200: + LOG(2,("MAVENTV: G200 restrictions apply\n")); + m_max = 32; + break; +*/ default: + LOG(2,("MAVENTV: G400/G400MAX restrictions apply\n")); + m_max = 32; + break; + } + + /* set number of fields per second to generate */ + if ((target.flags & TV_BITS) == TV_PAL) + fields_sec = 50.0; + else + fields_sec = 59.94; + + /* determine the max. pixelclock for the current videomode */ + switch (target.space) + { + case B_RGB16_LITTLE: + max_pclks_field = (si->ps.max_dac2_clock_16 * 1000000) / fields_sec; + break; + case B_RGB32_LITTLE: + max_pclks_field = (si->ps.max_dac2_clock_32 * 1000000) / fields_sec; + break; + default: + /* use fail-safe value */ + max_pclks_field = (si->ps.max_dac2_clock_32 * 1000000) / fields_sec; + break; + } + /* if some dualhead mode is active, an extra restriction might apply */ + if ((target.flags & DUALHEAD_BITS) && (target.space == B_RGB32_LITTLE)) + max_pclks_field = (si->ps.max_dac2_clock_32dh * 1000000) / fields_sec; + + /* Checkout all possible Htotal settings within the current granularity step + * of CRTC2 to get a real close videoclock match! + * (The MAVEN apparantly has a granularity of 1 pixel, while CRTC2 has 8 pixels) */ + for (h_total_mod = 0; h_total_mod < 8; h_total_mod++) + { + LOG(2,("MAVENTV: trying h_total modification of +%d...\n", h_total_mod)); + + /* Calculate videoclock to be a bit to high so we can compensate for an exact + * match via h_total_lastline.. */ + *ht_new = target.timing.h_total + h_total_mod + 2; + + /* Make sure the requested pixelclock is within the PLL's operational limits */ + /* lower limit is min_video_vco divided by highest postscaler-factor */ + req_pclks_field = *ht_new * target.timing.v_total; + if (req_pclks_field < (((si->ps.min_video_vco * 1000000) / fields_sec) / 8.0)) + { + req_pclks_field = (((si->ps.min_video_vco * 1000000) / fields_sec) / 8.0); + LOG(4,("MAVENTV: WARNING, clamping at lowest possible videoclock\n")); + } + /* upper limit is given by pins in combination with current active mode */ + if (req_pclks_field > max_pclks_field) + { + req_pclks_field = max_pclks_field; + LOG(4,("MAVENTV: WARNING, clamping at highest possible videoclock\n")); + } + + /* iterate through all valid PLL postscaler settings */ + for (p=0x01; p < 0x10; p = p<<1) + { + /* calc the needed number of VCO clocks per field for this postscaler setting */ + vco_clks_field = req_pclks_field * p; + + /* check if this is within range of the VCO specs */ + if ((vco_clks_field >= ((si->ps.min_video_vco * 1000000) / fields_sec)) && + (vco_clks_field <= ((si->ps.max_video_vco * 1000000) / fields_sec))) + { + /* iterate trough all valid reference-frequency postscaler settings */ + for (m = 2; m <= m_max; m++) + { + /* calculate VCO postscaler setting for current setup.. */ + n = (int)(((vco_clks_field * m) / ((si->ps.f_ref * 1000000) / fields_sec)) + 0.5); + /* ..and check for validity */ + if ((n < 8) || (n > 128)) continue; + + /* special TVmode stuff starts here (rest is in fact standard): */ + /* calculate number of videoclocks per field */ + calc_pclks_field = + (((uint32)((si->ps.f_ref * 1000000) / fields_sec)) * n) / ((float)(m * p)); + + /* we need a whole number of clocks per field, otherwise it won't work correctly. + * (TVout will flicker, green fields will occur) */ + if (calc_pclks_field != (uint32)calc_pclks_field) continue; + + /* check if we have the min. needed number of clocks per field for a sync lock */ + if (calc_pclks_field < ((*ht_new * (target.timing.v_total - 1)) + 2)) continue; + + /* calc number of clocks we have for the last field line */ + *ht_last_line = calc_pclks_field - (*ht_new * (target.timing.v_total - 1)); + + /* check if we haven't got too much clocks in the last field line for a sync lock */ + if (*ht_last_line > *ht_new) continue; + + /* we have a match! */ + /* calculate the difference between a full line and the last line */ + diff = *ht_new - *ht_last_line; + + /* if this last_line comes closer to a full line than earlier 'hits' then use it */ + if (diff < diff_smallest) + { + /* log results */ + if (diff_smallest == 999999999) + LOG(2,("MAVENTV: MATCH, ")); + else + LOG(2,("MAVENTV: better MATCH,")); + f_vco = (si->ps.f_ref / m) * n; + LOG(2,("found vid VCO freq %fMhz, pixclk %fMhz\n", f_vco, (f_vco / p))); + LOG(2,("MAVENTV: mnp(ex. filter) 0x%02x 0x%02x 0x%02x, h_total %d, ht_lastline %d\n", + (m - 1), (n - 1), (p - 1), (*ht_new - 2), (*ht_last_line - 2))); + + /* remember this best match */ + diff_smallest = diff; + best[0] = m; + best[1] = n; + best[2] = p; + /* h_total to use for this setting: + * exclude the 'calculate clock a bit too high' trick */ + best[3] = *ht_new - 2; + /* ht_last_line to use for this setting: + * exclude the 'calculate clock a bit too high' trick */ + best[4] = *ht_last_line - 2; + } + } + } + } + } + LOG(2,("MAVENTV: search completed.\n")); + + /* setup the scalers programming values for found optimum setting */ + m = best[0] - 1; + n = best[1] - 1; + p = best[2] - 1; + + /* if no match was found set fixed PLL frequency so we have something valid at least */ + if (diff_smallest == 999999999) + { + LOG(4,("MAVENTV: WARNING, no MATCH found!\n")); + + if (si->ps.f_ref == 27.000) + { + /* set 13.5Mhz */ + m = 0x03; + n = 0x07; + p = 0x03; + } + else + { + /* set 14.31818Mhz */ + m = 0x01; + n = 0x07; + p = 0x03; + } + best[3] = target.timing.h_total; + best[4] = target.timing.h_total; + } + + /* calc the needed PLL loopbackfilter setting belonging to current VCO speed */ + f_vco = (si->ps.f_ref / (m + 1)) * (n + 1); + LOG(2,("MAVENTV: using vid VCO frequency %fMhz\n", f_vco)); + + switch(si->ps.card_type) + { +/* case G100: + case G200: + for(;;) + { + if (f_vco >= 180) {p |= (0x03 << 3); break;}; + if (f_vco >= 140) {p |= (0x02 << 3); break;}; + if (f_vco >= 100) {p |= (0x01 << 3); break;}; + break; + } + break; +*/ default: + for(;;) + { + if (f_vco >= 240) {p |= (0x03 << 3); break;}; + if (f_vco >= 170) {p |= (0x02 << 3); break;}; + if (f_vco >= 110) {p |= (0x01 << 3); break;}; + break; + } + break; + } + + /* return results */ + *m_result = m; + *n_result = n; + *p_result = p; + *ht_new = best[3]; + *ht_last_line = best[4]; + + /* display the found pixelclock values */ + LOG(2,("MAVENTV: vid PLL check: got %fMHz, mnp 0x%02x 0x%02x 0x%02x\n", + (f_vco / ((p & 0x07) + 1)), m, n, p)); + LOG(2,("MAVENTV: new h_total %d, ht_lastline %d\n", *ht_new, *ht_last_line)); + + /* return status */ + if (diff_smallest == 999999999) return B_ERROR; + return B_OK; +} + + /* Notes about timing: + * Note: + * all horizontal timing is measured in pixelclock periods; + * all? vertical timing is measured in field? lines. */ + + /* Note: + * <= G400MAX cards have a fixed 27Mhz(?) clock for TV timing register values, + * while on G450/G550 these need to be calculated based on the video pixelclock. */ + + + /* Notes about signal strengths: + * Note: + * G400 and earlier cards have a fixed reference voltage of +2.6 Volt; + * G450 and G550 cards MAVEN DACs have a switchable ref voltage of +1.5/+2.0 Volt. + * + * This voltage is used to feed the videosignals: + * - Hsync pulse level; + * - Lowest active video output level; + * - Highest active video output level. + * These actual voltages are set via 10bit DACs. + * + * G450/G550: + * The color burst amplitude videosignal is fed by 80% of the above mentioned + * ref. voltage, and is set via an 8bit DAC. + * On G400 and earlier cards the ref. voltage is different, and also differs + * for PAL and NTSC mode. */ + + /* Note: + * Increasing the distance between the highest and lowest active video output + * level increases contrast; decreasing it decreases contrast. */ + + /* Note: + * Increasing both the highest and lowest active video output level with the + * same amount increases brightness; decreasing it decreases brightness. */ + + /* Note: + * Increasing the Hsync pulse level increases the black level, so decreases + * brightness and contrast. */ + +/* Preset maven PAL output (625lines, 50Hz mode) */ +void gxx0_maventv_PAL_init(uint8* buffer) +{ + uint16 value; + + /* Chroma subcarrier divider */ + buffer[0x00] = 0x2A; + buffer[0x01] = 0x09; + buffer[0x02] = 0x8A; + buffer[0x03] = 0xCB; + + buffer[0x04] = 0x00; + buffer[0x05] = 0x00; + buffer[0x06] = 0xF9; + buffer[0x07] = 0x00; + /* Hsync pulse length */ + buffer[0x08] = 0x7E; + /* color burst length */ + buffer[0x09] = 0x44; + /* back porch length */ + buffer[0x0a] = 0x9C; + + /* color burst amplitude */ +/* if (si->ps.card_type <= G400MAX) + { + buffer[0x0b] = 0x3e; + } + else + { +*/ buffer[0x0b] = 0x48; +// } + + buffer[0x0c] = 0x21; + buffer[0x0d] = 0x00; + +// if (si->ps.card_type <= G400MAX) +// { + /* Lowest active video output level. + * Warning: make sure this stays above (or equals) the sync pulse level! */ +// value = 0x0ea; +// buffer[0x0e] = ((value >> 2) & 0xff); +// buffer[0x0f] = (value & 0x03); + /* horizontal sync pulse level */ +// buffer[0x10] = ((value >> 2) & 0xff); +// buffer[0x11] = (value & 0x03); +// } +// else + { + /* Lowest active video output level. + * Warning: make sure this stays above (or equals) the sync pulse level! */ + value = 0x130; + buffer[0x0e] = ((value >> 2) & 0xff); + buffer[0x0f] = (value & 0x03); + /* horizontal sync pulse level */ + buffer[0x10] = ((value >> 2) & 0xff); + buffer[0x11] = (value & 0x03); + } + + buffer[0x12] = 0x1A; + buffer[0x13] = 0x2A; + + /* functional unit */ + buffer[0x14] = 0x1C; + buffer[0x15] = 0x3D; + buffer[0x16] = 0x14; + + /* vertical total */ //(=625) + /* b9-2 */ + buffer[0x17] = 0x9C; + /* b1-0 in b1-0 */ + buffer[0x18] = 0x01; + + buffer[0x19] = 0x00; + buffer[0x1a] = 0xFE; + buffer[0x1b] = 0x7E; + buffer[0x1c] = 0x60; + buffer[0x1d] = 0x05; + + /* Highest active video output level. + * Warning: make sure this stays above the lowest active video output level! */ +/* if (si->ps.card_type <= G400MAX) + { + value = 0x24f; + buffer[0x1e] = ((value >> 2) & 0xff); + buffer[0x1f] = (value & 0x03); + } + else +*/ { + value = 0x300; + buffer[0x1e] = ((value >> 2) & 0xff); + buffer[0x1f] = (value & 0x03); + } + + /* saturation (field?) #1 */ +// if (si->ps.card_type <= G400MAX) +// buffer[0x20] = 0x72; +// else + buffer[0x20] = 0xA5; + + buffer[0x21] = 0x07; + + /* saturation (field?) #2 */ +// if (si->ps.card_type <= G400MAX) +// buffer[0x22] = 0x72; +// else + buffer[0x22] = 0xA5; + + buffer[0x23] = 0x00; + buffer[0x24] = 0x00; + /* hue? */ + buffer[0x25] = 0x00; + + buffer[0x26] = 0x08; + buffer[0x27] = 0x04; + buffer[0x28] = 0x00; + buffer[0x29] = 0x1A; + + /* functional unit */ + buffer[0x2a] = 0x55; + buffer[0x2b] = 0x01; + + /* front porch length */ + buffer[0x2c] = 0x26; + + /* functional unit */ + buffer[0x2d] = 0x07; + buffer[0x2e] = 0x7E; + + /* functional unit */ + buffer[0x2f] = 0x02; + buffer[0x30] = 0x54; + + /* horizontal visible */ + value = 0x580; + buffer[0x31] = ((value >> 3) & 0xff); + buffer[0x32] = (value & 0x07); + + /* upper blanking (in field lines) */ + buffer[0x33] = 0x14; //=((v_total - v_sync_end)/2) -1 + + buffer[0x34] = 0x49; + buffer[0x35] = 0x00; + buffer[0x36] = 0x00; + buffer[0x37] = 0xA3; + buffer[0x38] = 0xC8; + buffer[0x39] = 0x22; + buffer[0x3a] = 0x02; + buffer[0x3b] = 0x22; + + /* functional unit */ + buffer[0x3c] = 0x3F; + buffer[0x3d] = 0x03; +} + +/* Preset maven NTSC output (525lines, 59.94Hz mode) */ +void gxx0_maventv_NTSC_init(uint8* buffer) +{ + uint16 value; + + /* Chroma subcarrier frequency */ + buffer[0x00] = 0x21; + buffer[0x01] = 0xF0; + buffer[0x02] = 0x7C; + buffer[0x03] = 0x1F; + + buffer[0x04] = 0x00; + buffer[0x05] = 0x00;//b1 = ON enables colorbar testimage + buffer[0x06] = 0xF9;//b0 = ON enables MAVEN TV output + buffer[0x07] = 0x00;//influences the colorburst signal amplitude somehow + + /* Hsync pulse length */ + buffer[0x08] = 0x7E; + /* color burst length */ + buffer[0x09] = 0x43; + /* back porch length */ + buffer[0x0a] = 0x7E; + + /* color burst amplitude */ +// if (si->ps.card_type <= G400MAX) +// { +// buffer[0x0b] = 0x46; +// } +// else + { + buffer[0x0b] = 0x48; + } + + buffer[0x0c] = 0x00; + buffer[0x0d] = 0x00; + +// if (si->ps.card_type <= G400MAX) +// { + /* Lowest active video output level. + * Warning: make sure this stays above (or equals) the sync pulse level! */ +// value = 0x0ea; +// buffer[0x0e] = ((value >> 2) & 0xff); +// buffer[0x0f] = (value & 0x03); + /* horizontal sync pulse level */ +// buffer[0x10] = ((value >> 2) & 0xff); +// buffer[0x11] = (value & 0x03); +// } +// else + { + /* Lowest active video output level. + * Warning: make sure this stays above (or equals) the sync pulse level! */ + value = 0x130; + buffer[0x0e] = ((value >> 2) & 0xff); + buffer[0x0f] = (value & 0x03); + /* horizontal sync pulse level */ + buffer[0x10] = ((value >> 2) & 0xff); + buffer[0x11] = (value & 0x03); + } + + buffer[0x12] = 0x17; + buffer[0x13] = 0x21; + + /* functional unit */ + buffer[0x14] = 0x1B; + buffer[0x15] = 0x1B; + buffer[0x16] = 0x24; + + /* vertical total */ + /* b9-2 */ + buffer[0x17] = 0x83; + /* b1-0 in b1-0 */ + buffer[0x18] = 0x01; + + buffer[0x19] = 0x00;//mv register? + buffer[0x1a] = 0x0F; + buffer[0x1b] = 0x0F; + buffer[0x1c] = 0x60; + buffer[0x1d] = 0x05; + + /* Highest active video output level. + * Warning: make sure this stays above the lowest active video output level! */ +/* if (si->ps.card_type <= G400MAX) + { + value = 0x24f; + buffer[0x1e] = ((value >> 2) & 0xff); + buffer[0x1f] = (value & 0x03); + } + else +*/ { + value = 0x300; + buffer[0x1e] = ((value >> 2) & 0xff); + buffer[0x1f] = (value & 0x03); + } + + /* color saturation #1 (Y-B ?) */ +// if (si->ps.card_type <= G400MAX) +// buffer[0x20] = 0x5F; +// else + buffer[0x20] = 0x9C; + + buffer[0x21] = 0x04; + + /* color saturation #2 (Y-R ?) */ +// if (si->ps.card_type <= G400MAX) +// buffer[0x22] = 0x5F; +// else + buffer[0x22] = 0x9C; + + buffer[0x23] = 0x01; + buffer[0x24] = 0x02; + + /* hue: preset at 0 degrees */ + buffer[0x25] = 0x00; + + buffer[0x26] = 0x0A; + buffer[0x27] = 0x05;//sync stuff + buffer[0x28] = 0x00; + buffer[0x29] = 0x10;//field line-length stuff + + /* functional unit */ + buffer[0x2a] = 0xFF; + buffer[0x2b] = 0x03; + + /* front porch length */ + buffer[0x2c] = 0x24; + + /* functional unit */ + buffer[0x2d] = 0x0F; + buffer[0x2e] = 0x78; + + /* functional unit */ + buffer[0x2f] = 0x00; + buffer[0x30] = 0x00; + + /* horizontal visible */ + /* b10-3 */ + buffer[0x31] = 0xB2; + /* b2-0 in b2-0 */ + buffer[0x32] = 0x04; + + /* upper blanking (in field lines) */ + buffer[0x33] = 0x14; + + buffer[0x34] = 0x02;//colorphase or so stuff. + buffer[0x35] = 0x00; + buffer[0x36] = 0x00; + buffer[0x37] = 0xA3; + buffer[0x38] = 0xC8; + buffer[0x39] = 0x15; + buffer[0x3a] = 0x05; + buffer[0x3b] = 0x3B; + + /* functional unit */ + buffer[0x3c] = 0x3C; + buffer[0x3d] = 0x00; +} + +void gx50_maventv_PAL_timing(gx50_maven_timing *m_timing) +{ + /* values are given in picoseconds */ + m_timing->h_total = 64000000; + /* the sum of the signal duration below should match h_total! */ + m_timing->h_display = 52148148; + m_timing->h_sync_length = 4666667; + m_timing->front_porch = 1407407; + m_timing->back_porch = 5777778; + /* colorburst is 'superimposed' on the above timing */ + m_timing->color_burst = 2518518; + /* number of lines per frame */ + m_timing->v_total = 625; + /* color carrier frequency in Mhz */ + m_timing->chroma_subcarrier = 4.43361875; +} + +void gx50_maventv_NTSC_timing(gx50_maven_timing *m_timing) +{ + /* values are given in picoseconds */ + m_timing->h_total = 63555556; + /* the sum of the signal duration below should match h_total! */ + m_timing->h_display = 52888889; + m_timing->h_sync_length = 4666667; + m_timing->front_porch = 1333333; + m_timing->back_porch = 4666667; + /* colorburst is 'superimposed' on the above timing */ + m_timing->color_burst = 2418418; + /* number of lines per frame */ + m_timing->v_total = 525; + /* color carrier frequency in Mhz */ + m_timing->chroma_subcarrier = 3.579545454; +} + +int maventv_init(display_mode target) +{ + uint8 val; + uint8 m_result, n_result, p_result; + unsigned int ht_new, ht_last_line; + float calc_pclk = 0; + /* use a display_mode copy because we might tune it for TVout compatibility */ + display_mode tv_target = target; + /* used as buffer for TVout signal to generate */ + uint8 maventv_regs[64]; + /* used in G450/G550 to calculate TVout signal timing dependant on pixelclock; + * <= G400MAX use fixed settings because base-clock here is the fixed crystal + * frequency. */ + //fixme: if <=G400 cards with MAVEN and crystal of 14.31818Mhz exist, modify!?! + gx50_maven_timing m_timing; + + /* preset new TVout mode */ + if ((tv_target.flags & TV_BITS) == TV_PAL) + { + LOG(4, ("MAVENTV: PAL TVout\n")); + gxx0_maventv_PAL_init(maventv_regs); + gx50_maventv_PAL_timing(&m_timing); + } + else + { + LOG(4, ("MAVENTV: NTSC TVout\n")); + gxx0_maventv_NTSC_init(maventv_regs); + gx50_maventv_NTSC_timing(&m_timing); + } + + /* enter mode-program mode */ +// if (si->ps.card_type <= G400MAX) MAVW(PGM, 0x01); +// else +// { +// DXIW(TVO_IDX, ENMAV_PGM); +// DXIW(TVO_DATA, 0x01); +// } + + /* tune new TVout mode */ +// if (si->ps.card_type <= G400MAX) + { + /* setup TV-mode 'copy' of CRTC2, setup PLL, inputs, outputs and sync-locks */ +// MAVW(MONSET, 0x00); +// MAVW(MONEN, 0xA2); + + /* xmiscctrl */ + //unknown regs: +// MAVWW(WREG_0X8E_L, 0x1EFF); +// MAVW(BREG_0XC6, 0x01); + +// MAVW(LOCK, 0x01); +// MAVW(OUTMODE, 0x08); +// MAVW(LUMA, 0x78); +// MAVW(STABLE, 0x02); +// MAVW(MONEN, 0xB3); + + /* setup video PLL */ + g100_g400max_maventv_vid_pll_find( + tv_target, &ht_new, &ht_last_line, &m_result, &n_result, &p_result); +// MAVW(PIXPLLM, m_result); +// MAVW(PIXPLLN, n_result); +// MAVW(PIXPLLP, (p_result | 0x80)); + +// MAVW(MONSET, 0x20); + +// MAVW(TEST, 0x10); + + /* htotal - 2 */ +// MAVWW(HTOTALL, ht_new); + + /* last line in field can have different length */ + /* hlen - 2 */ +// MAVWW(LASTLINEL, ht_last_line); + + /* horizontal vidrst pos: 0 <= vidrst pos <= htotal - 2 */ +// MAVWW(HVIDRSTL, (ht_last_line - si->crtc_delay - +// (tv_target.timing.h_sync_end - tv_target.timing.h_sync_start))); + //ORG (does the same but with limit checks but these limits should never occur!): +// slen = tv_target.timing.h_sync_end - tv_target.timing.h_sync_start; +// hcrt = tv_target.timing.h_total - slen - si->crtc_delay; +// if (ht_last_line < tv_target.timing.h_total) hcrt += ht_last_line; +// if (hcrt > tv_target.timing.h_total) hcrt -= tv_target.timing.h_total; +// if (hcrt + 2 > tv_target.timing.h_total) hcrt = 0; /* or issue warning? */ +// MAVWW(HVIDRSTL, hcrt); + + /* who knows */ +// MAVWW(HSYNCSTRL, 0x0004);//must be 4!! + + /* hblanking end: 100% */ +// MAVWW(HSYNCLENL, (tv_target.timing.h_total - tv_target.timing.h_sync_end)); + + /* vertical line count - 1 */ +// MAVWW(VTOTALL, (tv_target.timing.v_total - 1)); + + /* vertical vidrst pos */ +// MAVWW(VVIDRSTL, (tv_target.timing.v_total - 2)); + + /* something end... [A6]+1..[A8] */ +// MAVWW(VSYNCSTRL, 0x0001); + + /* vblanking end: stop vblanking */ +// MAVWW(VSYNCLENL, (tv_target.timing.v_sync_end - tv_target.timing.v_sync_start - 1)); + //org: no visible diff: + //MAVWW(VSYNCLENL, (tv_target.timing.v_total - tv_target.timing.v_sync_start - 1)); + + /* something start... 0..[A4]-1 */ +// MAVWW(VDISPLAYL, 0x0000); + //std setmode (no visible difference) + //MAVWW(VDISPLAYL, (tv_target.timing.v_total - 1)); + + /* ... */ +// MAVWW(WREG_0X98_L, 0x0000); + + /* moves picture up/down and so on... */ +// MAVWW(VSOMETHINGL, 0x0001); /* Fix this... 0..VTotal */ + + { + uint32 h_display_tv; + uint8 h_scale_tv; + + unsigned int ib_min_length; + unsigned int ib_length; + int index; + + /* calc hor scale-back factor from input to output picture (in 1.7 format) + * the MAVEN has 736 pixels fixed visible? outputline length for TVout */ + //fixme: shouldn't this be 768 (= PAL 1:1 output 4:3 ratio format)?!? + h_scale_tv = (736 << 7) / tv_target.timing.h_total;//should be PLL corrected + LOG(4,("MAVENTV: horizontal scale-back factor is: %f\n", (h_scale_tv / 128.0))); + + /* limit values to MAVEN capabilities (scale-back factor is 0.5-1.0) */ + //fixme: how about lowres upscaling? + if (h_scale_tv > 0x80) + { + h_scale_tv = 0x80; + LOG(4,("MAVENTV: limiting horizontal scale-back factor to: %f\n", (h_scale_tv / 128.0))); + } + if (h_scale_tv < 0x40) + { + h_scale_tv = 0x40; + LOG(4,("MAVENTV: limiting horizontal scale-back factor to: %f\n", (h_scale_tv / 128.0))); + } + /* make sure we get no round-off error artifacts on screen */ + h_scale_tv--; + + /* calc difference in (wanted output picture width (excl. hsync_length)) and + * (fixed total output line length (=768)), + * based on input picture and scaling factor */ + /* (MAVEN trick (part 1) to get output picture width to fit into just 8 bits) */ + h_display_tv = ((768 - 1) << 7) - + (((tv_target.timing.h_total - tv_target.timing.h_sync_end) /* is left margin */ + + tv_target.timing.h_display - 8) + * h_scale_tv); + /* convert result from 25.7 to 32.0 format */ + h_display_tv = h_display_tv >> 7; + LOG(4,("MAVENTV: displaying output on %d picture pixels\n", + ((768 - 1) - h_display_tv))); + + /* half result: MAVEN trick (part 2) + * (258 - 768 pixels, only even number per line is possible) */ + h_display_tv = h_display_tv >> 1; + /* limit value to register contraints */ + if (h_display_tv > 0xFF) h_display_tv = 0xFF; +// MAVW(HSCALETV, h_scale_tv); +// MAVW(HDISPLAYTV, h_display_tv); + + + /* calculate line inputbuffer length */ + /* It must be between (including): + * ((input picture left margin) + (input picture hor. resolution) + 4) + * AND + * (input picture total line length) (PLL corrected) */ + + /* calculate minimal line input buffer length */ + ib_min_length = ((tv_target.timing.h_total - tv_target.timing.h_sync_end) + + tv_target.timing.h_display + 4); + + /* calculate optimal line input buffer length (so top of picture is OK too) */ + /* The following formula applies: + * optimal buffer length = ((((0x78 * i) - R) / hor. scaling factor) + Q) + * + * where (in 4.8 format!) + * R Qmin Qmax + * 0x0E0 0x5AE 0x5BF + * 0x100 0x5CF 0x5FF + * 0x180 0x653 0x67F + * 0x200 0x6F8 0x6FF + */ + index = 1; + do + { + ib_length = ((((((0x7800 << 7) * index) - (0x100 << 7)) / h_scale_tv) + 0x05E7) >> 8); + index++; + } while (ib_length < ib_min_length); + LOG(4,("MAVENTV: optimal line inputbuffer length: %d\n", ib_length)); + + if (ib_length >= ht_new + 2) + { + ib_length = ib_min_length; + LOG(4,("MAVENTV: limiting line inputbuffer length, setting minimal usable: %d\n", ib_length)); + } +// MAVWW(HDISPLAYL, ib_length); + } + + { + uint16 t_scale_tv; + uint32 v_display_tv; + + /* calc total scale-back factor from input to output picture */ + { + uint32 out_clocks; + uint32 in_clocks; + + //takes care of green stripes: + /* calc output clocks per frame */ + out_clocks = m_timing.v_total * (ht_new + 2); + + /* calc input clocks per frame */ + in_clocks = (tv_target.timing.v_total - 1) * (ht_new + 2) + ht_last_line + 2; + + /* calc total scale-back factor from input to output picture in 1.15 format */ + t_scale_tv = ((((uint64)out_clocks) << 15) / in_clocks); + LOG(4,("MAVENTV: total scale-back factor is: %f\n", (t_scale_tv / 32768.0))); + + /* min. scale-back factor is 1.0 for 1:1 output */ + if (t_scale_tv > 0x8000) + { + t_scale_tv = 0x8000; + LOG(4,("MAVENTV: limiting total scale-back factor to: %f\n", (t_scale_tv / 32768.0))); + } + } + + /*calc output picture height based on input picture and scaling factor */ + //warning: v_display was 'one' lower originally! + v_display_tv = + ((tv_target.timing.v_sync_end - tv_target.timing.v_sync_start) /* is sync length */ + + (tv_target.timing.v_total - tv_target.timing.v_sync_end) /* is upper margin */ + + tv_target.timing.v_display) + * t_scale_tv; + /* convert result from 17.15 to 32.0 format */ + v_display_tv = (v_display_tv >> 15); + LOG(4,("MAVENTV: displaying output on %d picture frame-lines\n", v_display_tv)); + + /* half result, and compensate for internal register offset + * (MAVEN trick to get it to fit into just 8 bits). + * (allowed output frame height is 292 - 802 lines, only even numbers) */ + v_display_tv = (v_display_tv >> 1) - 146; + /* limit value to register contraints */ + if (v_display_tv > 0xFF) v_display_tv = 0xFF; + /* make sure we get no round-off error artifacts on screen */ + t_scale_tv--; + +// MAVWW(TSCALETVL, t_scale_tv); +// MAVW(VDISPLAYTV, v_display_tv); + } + +// MAVW(TEST, 0x00); + + /* gamma correction registers */ +// MAVW(GAMMA1, 0x00); +// MAVW(GAMMA2, 0x00); +// MAVW(GAMMA3, 0x00); +// MAVW(GAMMA4, 0x1F); +// MAVW(GAMMA5, 0x10); +// MAVW(GAMMA6, 0x10); +// MAVW(GAMMA7, 0x10); +// MAVW(GAMMA8, 0x64); /* 100 */ +// MAVW(GAMMA9, 0xC8); /* 200 */ + + /* set flickerfilter */ + /* OFF: is dependant on MAVEN chip version(?): ENG_TVO_B = $40, else $00. + * ON : always set $a2. */ +// MAVW(FFILTER, 0xa2); + + /* 0x10 or anything ored with it */ + //fixme? linux uses 0x14... +// MAVW(TEST, (MAVR(TEST) & 0x10)); + + /* output: SVideo/Composite */ +// MAVW(OUTMODE, 0x08); + } +// else /* card_type is >= G450 */ + { + //fixme: setup an intermediate buffer if vertical res is different than settings below! + //fixme: setup 2D or 3D engine to do screen_to_screen_scaled_filtered_blit between the buffers + // during vertical retrace! + if ((tv_target.flags & TV_BITS) == TV_PAL) + { + int diff; + + /* defined by the PAL standard */ + tv_target.timing.v_total = m_timing.v_total; + /* we need to center the image on TV vertically. + * note that 576 is the maximum supported resolution for the PAL standard, + * this is already overscanning by approx 8-10% */ + diff = 576 - tv_target.timing.v_display; + /* if we cannot display the current vertical resolution fully, clip it */ + if (diff < 0) + { + tv_target.timing.v_display = 576; + diff = 0; + } + /* now center the image on TV by centering the vertical sync pulse */ + tv_target.timing.v_sync_start = tv_target.timing.v_display + 1 + (diff / 2); + tv_target.timing.v_sync_end = tv_target.timing.v_sync_start + 1; + } + else + { + int diff; + + /* defined by the NTSC standard */ + tv_target.timing.v_total = m_timing.v_total; + /* we need to center the image on TV vertically. + * note that 480 is the maximum supported resolution for the NTSC standard, + * this is already overscanning by approx 8-10% */ + diff = 480 - tv_target.timing.v_display; + /* if we cannot display the current vertical resolution fully, clip it */ + if (diff < 0) + { + tv_target.timing.v_display = 480; + diff = 0; + } + /* now center the image on TV by centering the vertical sync pulse */ + tv_target.timing.v_sync_start = tv_target.timing.v_display + 1 + (diff / 2); + tv_target.timing.v_sync_end = tv_target.timing.v_sync_start + 1; + } + + /* setup video PLL for G450/G550: + * this can be done in the normal way because the MAVEN works in slave mode! + * NOTE: must be done before programming CRTC2, or interlaced startup may fail. */ + + //fixme: make sure videoPLL is powered up: XPWRCTRL b1=1 + { + uint16 front_porch, back_porch, h_sync_length, burst_length, h_total, h_display; + uint32 chromasc; + uint64 pix_period; + uint16 h_total_wanted, leftover; + + /* calculate tv_h_display in 'half pixelclocks' and adhere to MAVEN restrictions. + * ('half pixelclocks' exist because the MAVEN uses them...) */ + h_display = (((tv_target.timing.h_display << 1) + 3) & ~0x03); + if (h_display > 2044) h_display = 2044; + /* copy result to MAVEN TV mode */ + maventv_regs[0x31] = (h_display >> 3); + maventv_regs[0x32] = (h_display & 0x07); + + /* calculate needed video pixelclock in kHz. + * NOTE: + * The clock calculated is based on MAVEN output, so each pixelclock period + * is in fact a 'half pixelclock' period compared to monitor mode use. */ + tv_target.timing.pixel_clock = + ((((uint64)h_display) * 1000000000) / m_timing.h_display); + + /* tune display_mode adhering to CRTC2 restrictions */ + /* (truncate h_display to 'whole pixelclocks') */ + tv_target.timing.h_display = ((h_display >> 1) & ~0x07); + tv_target.timing.h_sync_start = tv_target.timing.h_display + 8; + +// g450_g550_maven_vid_pll_find(tv_target, &calc_pclk, &m_result, &n_result, &p_result, 1); + /* adjust mode to actually used pixelclock */ + tv_target.timing.pixel_clock = (calc_pclk * 1000); + + /* program videoPLL */ +// DXIW(VIDPLLM, m_result); +// DXIW(VIDPLLN, n_result); +// DXIW(VIDPLLP, p_result); + + /* calculate videoclock 'half' period duration in picoseconds */ + pix_period = (1000000000 / ((float)tv_target.timing.pixel_clock)) + 0.5; + LOG(4,("MAVENTV: TV videoclock period is %d picoseconds\n", pix_period)); + + /* calculate number of 'half' clocks per line according to pixelclock set */ + /* fixme: try to setup the modes in such a way that + * (h_total_clk % 16) == 0 because of the CRTC2 restrictions: + * we want to loose the truncating h_total trick below if possible! */ + /* Note: + * This is here so we can see the wanted and calc'd timing difference. */ + h_total_wanted = ((m_timing.h_total / ((float)pix_period)) + 0.5); + LOG(4,("MAVENTV: TV h_total should be %d units\n", h_total_wanted)); + + /* calculate chroma subcarrier value to setup: + * do this as exact as possible because this signal is very sensitive.. */ + chromasc = + ((((uint64)0x100000000) * (m_timing.chroma_subcarrier / calc_pclk)) + 0.5); + /* copy result to MAVEN TV mode */ + maventv_regs[0] = ((chromasc >> 24) & 0xff); + maventv_regs[1] = ((chromasc >> 16) & 0xff); + maventv_regs[2] = ((chromasc >> 8) & 0xff); + maventv_regs[3] = ((chromasc >> 0) & 0xff); + LOG(4,("MAVENTV: TV chroma subcarrier divider set is $%08x\n", chromasc)); + + /* calculate front porch in 'half pixelclocks' */ + /* we always round up because of the h_total truncating 'trick' below, + * which works in combination with the existing difference between + * h_total_clk and h_total */ + //fixme: prevent this if possible! + front_porch = ((m_timing.front_porch / ((float)pix_period)) + 1); + /* value must be even */ + front_porch &= ~0x01; + + /* calculate back porch in 'half pixelclocks' */ + /* we always round up because of the h_total truncating 'trick' below, + * which works in combination with the existing difference between + * h_total_clk and h_total */ + //fixme: prevent this if possible! + back_porch = ((m_timing.back_porch / ((float)pix_period)) + 1); + /* value must be even */ + back_porch &= ~0x01; + + /* calculate h_sync length in 'half pixelclocks' */ + /* we always round up because of the h_total truncating 'trick' below, + * which works in combination with the existing difference between + * h_total_clk and h_total */ + //fixme: prevent this if possible! + h_sync_length = ((m_timing.h_sync_length / ((float)pix_period)) + 1); + /* value must be even */ + h_sync_length &= ~0x01; + + /* calculate h_total in 'half pixelclocks' */ + h_total = h_display + front_porch + back_porch + h_sync_length; + + LOG(4,("MAVENTV: TV front_porch is %d clocks\n", front_porch)); + LOG(4,("MAVENTV: TV back_porch is %d clocks\n", back_porch)); + LOG(4,("MAVENTV: TV h_sync_length is %d clocks\n", h_sync_length)); + LOG(4,("MAVENTV: TV h_display is %d clocks \n", h_display)); + LOG(4,("MAVENTV: TV h_total is %d clocks\n", h_total)); + + /* calculate color_burst length in 'half pixelclocks' */ + burst_length = (((m_timing.color_burst /*- 1*/) / ((float)pix_period)) + 0.5); + LOG(4,("MAVENTV: TV color_burst is %d clocks.\n", burst_length)); + + /* copy result to MAVEN TV mode */ + maventv_regs[0x09] = burst_length; + + /* Calculate line length 'rest' that remains after truncating + * h_total to adhere to the CRTC2 timing restrictions. */ + leftover = h_total & 0x0F; + /* if some 'rest' exists, we need to compensate for it... */ + /* Note: + * It's much better to prevent this from happening because this + * 'trick' will decay TVout timing! (timing is nolonger official) */ + if (leftover) + { + /* truncate line length to adhere to CRTC2 restrictions */ + front_porch -= leftover; + h_total -= leftover; + + /* now set line length to closest CRTC2 valid match */ + if (leftover < 3) + { + /* 1 <= old rest <= 2: + * Truncated line length is closest match. */ + LOG(4,("MAVENTV: CRTC2 h_total leftover discarded (< 3)\n")); + } + else + { + if (leftover < 10) + { + /* 3 <= old rest <= 9: + * We use the NTSC killer circuitry to get closest match. + * (The 'g400_crtc2_set_timing' routine will enable it + * because of the illegal h_total timing we create here.) */ + front_porch += 4; + h_total += 4; + LOG(4,("MAVENTV: CRTC2 h_total leftover corrected via killer (> 2, < 10)\n")); + } + else + { + /* 10 <= old rest <= 15: + * Set closest valid CRTC2 match. */ + front_porch += 16; + h_total += 16; + LOG(4,("MAVENTV: CRTC2 h_total leftover corrected via increase (> 9, < 16)\n")); + } + } + } + + /* (linux) fixme: maybe MAVEN has requirement 800 < h_total < 1184 */ + maventv_regs[0x2C] = front_porch; + maventv_regs[0x0A] = back_porch; + maventv_regs[0x08] = h_sync_length; + + /* change h_total to represent 'whole pixelclocks' */ + h_total = h_total >> 1; + + /* tune display_mode adhering to CRTC2 restrictions */ + tv_target.timing.h_sync_end = (h_total & ~0x07) - 8; + /* h_total is checked before being programmed! (NTSC killer circuitry) */ + tv_target.timing.h_total = h_total; + } + + /* output Y/C and CVBS signals (| $40 needed for SCART) */ +// DXIW(TVO_IDX, 0x80); +// DXIW(TVO_DATA, 0x03); + + /* select input colorspace */ + //fixme?: has no effect on output picture on monitor or TV... + //DXIW(TVO_IDX, 0x81); + //DXIW(TVO_DATA, 0x00); + + /* calculate vertical sync point */ + { + int upper; + + /* set 625 lines for PAL or 525 lines for NTSC */ + maventv_regs[0x17] = m_timing.v_total / 4; + maventv_regs[0x18] = m_timing.v_total & 3; + + /* calculate upper blanking range in field lines */ + upper = (m_timing.v_total - tv_target.timing.v_sync_end) >> 1; + + /* blank TVout above the line number calculated */ + maventv_regs[0x33] = upper - 1; + + /* set calculated vertical sync point */ +// DXIW(TVO_IDX, 0x82); +// DXIW(TVO_DATA, (upper & 0xff)); +// DXIW(TVO_IDX, 0x83); +// DXIW(TVO_DATA, ((upper >> 8) & 0xff)); + LOG(4,("MAVENTV: TV upper blanking range set is %d\n", upper)); + } + + /* set fized horizontal sync point */ +// DXIW(TVO_IDX, 0x84); +// DXIW(TVO_DATA, 0x01); +// DXIW(TVO_IDX, 0x85); +// DXIW(TVO_DATA, 0x00); + + /* connect DAC1 to CON1, CRTC2/'DAC2' to CON2 (TVout mode) */ +// DXIW(OUTPUTCONN,0x0d); + } + + /* program new TVout mode */ + for (val = 0x00; val <= 0x3D; val++) + { +/* if (si->ps.card_type <= G400MAX) + { + i2c_maven_write(val, maventv_regs[val]); + } + else +*/ { +// DXIW(TVO_IDX, val); +// DXIW(TVO_DATA, maventv_regs[val]); + } + } + + /* leave mode-program mode */ +// if (si->ps.card_type <= G400MAX) MAVW(PGM, 0x00); +// else +// { +// DXIW(TVO_IDX, ENMAV_PGM); +// DXIW(TVO_DATA, 0x00); + + /* Select 2.0 Volt MAVEN DAC ref. so we have enough contrast/brightness range */ +// DXIW(GENIOCTRL, DXIR(GENIOCTRL) | 0x40); +// DXIW(GENIODATA, 0x00); +// } + + /* setup CRTC2 timing */ + head2_set_timing(tv_target); + + /* start whole thing if needed */ +// if (si->ps.card_type <= G400MAX) MAVW(RESYNC, 0x20); + + return 0; +}