diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-av-core.c')
-rw-r--r-- | drivers/media/video/cx18/cx18-av-core.c | 143 |
1 files changed, 142 insertions, 1 deletions
diff --git a/drivers/media/video/cx18/cx18-av-core.c b/drivers/media/video/cx18/cx18-av-core.c index 1240142..3b0a2c4 100644 --- a/drivers/media/video/cx18/cx18-av-core.c +++ b/drivers/media/video/cx18/cx18-av-core.c @@ -166,6 +166,147 @@ static void cx18_av_initialize(struct cx18 *cx) /* ----------------------------------------------------------------------- */ +void cx18_av_std_setup(struct cx18 *cx) +{ + struct cx18_av_state *state = &cx->av_state; + v4l2_std_id std = state->std; + int hblank, hactive, burst, vblank, vactive, sc; + int vblank656, src_decimation; + int luma_lpf, uv_lpf, comb; + u32 pll_int, pll_frac, pll_post; + + /* datasheet startup, step 8d */ + if (std & ~V4L2_STD_NTSC) + cx18_av_write(cx, 0x49f, 0x11); + else + cx18_av_write(cx, 0x49f, 0x14); + + if (std & V4L2_STD_625_50) { + hblank = 132; + hactive = 720; + burst = 93; + vblank = 36; + vactive = 580; + vblank656 = 40; + src_decimation = 0x21f; + + luma_lpf = 2; + if (std & V4L2_STD_PAL) { + uv_lpf = 1; + comb = 0x20; + sc = 688739; + } else if (std == V4L2_STD_PAL_Nc) { + uv_lpf = 1; + comb = 0x20; + sc = 556453; + } else { /* SECAM */ + uv_lpf = 0; + comb = 0; + sc = 672351; + } + } else { + hactive = 720; + hblank = 122; + vactive = 487; + luma_lpf = 1; + uv_lpf = 1; + vblank = 26; + vblank656 = 26; + + src_decimation = 0x21f; + if (std == V4L2_STD_PAL_60) { + burst = 0x5b; + luma_lpf = 2; + comb = 0x20; + sc = 688739; + } else if (std == V4L2_STD_PAL_M) { + burst = 0x61; + comb = 0x20; + sc = 555452; + } else { + burst = 0x5b; + comb = 0x66; + sc = 556063; + } + } + + /* DEBUG: Displays configured PLL frequency */ + pll_int = cx18_av_read(cx, 0x108); + pll_frac = cx18_av_read4(cx, 0x10c) & 0x1ffffff; + pll_post = cx18_av_read(cx, 0x109); + CX18_DEBUG_INFO("PLL regs = int: %u, frac: %u, post: %u\n", + pll_int, pll_frac, pll_post); + + if (pll_post) { + int fin, fsc; + int pll = 28636363L * ((((u64)pll_int) << 25) + pll_frac); + + pll >>= 25; + pll /= pll_post; + CX18_DEBUG_INFO("PLL = %d.%06d MHz\n", + pll / 1000000, pll % 1000000); + CX18_DEBUG_INFO("PLL/8 = %d.%06d MHz\n", + pll / 8000000, (pll / 8) % 1000000); + + fin = ((u64)src_decimation * pll) >> 12; + CX18_DEBUG_INFO("ADC Sampling freq = %d.%06d MHz\n", + fin / 1000000, fin % 1000000); + + fsc = (((u64)sc) * pll) >> 24L; + CX18_DEBUG_INFO("Chroma sub-carrier freq = %d.%06d MHz\n", + fsc / 1000000, fsc % 1000000); + + CX18_DEBUG_INFO("hblank %i, hactive %i, " + "vblank %i , vactive %i, vblank656 %i, src_dec %i," + "burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x," + " sc 0x%06x\n", + hblank, hactive, vblank, vactive, vblank656, + src_decimation, burst, luma_lpf, uv_lpf, comb, sc); + } + + /* Sets horizontal blanking delay and active lines */ + cx18_av_write(cx, 0x470, hblank); + cx18_av_write(cx, 0x471, 0xff & (((hblank >> 8) & 0x3) | + (hactive << 4))); + cx18_av_write(cx, 0x472, hactive >> 4); + + /* Sets burst gate delay */ + cx18_av_write(cx, 0x473, burst); + + /* Sets vertical blanking delay and active duration */ + cx18_av_write(cx, 0x474, vblank); + cx18_av_write(cx, 0x475, 0xff & (((vblank >> 8) & 0x3) | + (vactive << 4))); + cx18_av_write(cx, 0x476, vactive >> 4); + cx18_av_write(cx, 0x477, vblank656); + + /* Sets src decimation rate */ + cx18_av_write(cx, 0x478, 0xff & src_decimation); + cx18_av_write(cx, 0x479, 0xff & (src_decimation >> 8)); + + /* Sets Luma and UV Low pass filters */ + cx18_av_write(cx, 0x47a, luma_lpf << 6 | ((uv_lpf << 4) & 0x30)); + + /* Enables comb filters */ + cx18_av_write(cx, 0x47b, comb); + + /* Sets SC Step*/ + cx18_av_write(cx, 0x47c, sc); + cx18_av_write(cx, 0x47d, 0xff & sc >> 8); + cx18_av_write(cx, 0x47e, 0xff & sc >> 16); + + /* Sets VBI parameters */ + if (std & V4L2_STD_625_50) { + cx18_av_write(cx, 0x47f, 0x01); + state->vbi_line_offset = 5; + } else { + cx18_av_write(cx, 0x47f, 0x00); + state->vbi_line_offset = 8; + } +} + +/* ----------------------------------------------------------------------- */ + static void input_change(struct cx18 *cx) { struct cx18_av_state *state = &cx->av_state; @@ -323,7 +464,7 @@ static int set_v4lstd(struct cx18 *cx) } cx18_av_and_or(cx, 0x400, ~0x2f, fmt | 0x20); cx18_av_and_or(cx, 0x403, ~0x3, pal_m); - cx18_av_vbi_setup(cx); + cx18_av_std_setup(cx); input_change(cx); return 0; } |