diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch')
| -rw-r--r-- | meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch deleted file mode 100644 index daa95ca50..000000000 --- a/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch +++ /dev/null @@ -1,183 +0,0 @@ -From 67f3fc050ab4e2006d5b7ec6ec341896627181ab Mon Sep 17 00:00:00 2001 -From: =?utf-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@nokia.com> -Date: Mon, 6 Apr 2009 17:32:04 +0200 -Subject: [PATCH] DSS2: Check fclk limits when configuring video planes -MIME-Version: 1.0 -Content-Type: text/plain; charset=utf-8 -Content-Transfer-Encoding: 8bit - -Check that the currect functional clock is fast enough to support -the requested scaling ratios. Also check if 5-tap filtering can be -used even though the downscaling ratio is less than 1:2 since the -functional clock rate required for 5-tap filtering can be less than -the requirement for 3-tap filtering, and 5-tap filtering should look -better. - -Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com> ---- - drivers/video/omap2/dss/dispc.c | 104 ++++++++++++++++++++++++++++++++++++--- - 1 files changed, 97 insertions(+), 7 deletions(-) - -diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c -index 41734f3..61861d8 100644 ---- a/drivers/video/omap2/dss/dispc.c -+++ b/drivers/video/omap2/dss/dispc.c -@@ -1026,11 +1026,11 @@ static void _dispc_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu) - static void _dispc_set_scaling(enum omap_plane plane, - u16 orig_width, u16 orig_height, - u16 out_width, u16 out_height, -- bool ilace) -+ bool ilace, bool five_taps) - { - int fir_hinc; - int fir_vinc; -- int hscaleup, vscaleup, five_taps; -+ int hscaleup, vscaleup; - int fieldmode = 0; - int accu0 = 0; - int accu1 = 0; -@@ -1040,7 +1040,6 @@ static void _dispc_set_scaling(enum omap_plane plane, - - hscaleup = orig_width <= out_width; - vscaleup = orig_height <= out_height; -- five_taps = orig_height > out_height * 2; - - _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps); - -@@ -1283,6 +1282,73 @@ static void calc_rotation_offset(u8 rotation, bool mirror, - } - } - -+static unsigned long calc_fclk_five_taps(u16 width, u16 height, -+ u16 out_width, u16 out_height, enum omap_color_mode color_mode) -+{ -+ u32 fclk = 0; -+ /* FIXME venc pclk? */ -+ u64 tmp, pclk = dispc_pclk_rate(); -+ -+ if (height > out_height) { -+ /* FIXME get real display PPL */ -+ unsigned int ppl = 800; -+ -+ tmp = pclk * height * out_width; -+ do_div(tmp, 2 * out_height * ppl); -+ fclk = tmp; -+ -+ if (height > 2 * out_height) { -+ tmp = pclk * (height - 2 * out_height) * out_width; -+ do_div(tmp, 2 * out_height * (ppl - out_width)); -+ fclk = max(fclk, (u32) tmp); -+ } -+ } -+ -+ if (width > out_width) { -+ tmp = pclk * width; -+ do_div(tmp, out_width); -+ fclk = max(fclk, (u32) tmp); -+ -+ if (color_mode == OMAP_DSS_COLOR_RGB24U) -+ fclk <<= 1; -+ } -+ -+ return fclk; -+} -+ -+static unsigned long calc_fclk(u16 width, u16 height, -+ u16 out_width, u16 out_height, -+ enum omap_color_mode color_mode, bool five_taps) -+{ -+ unsigned int hf, vf; -+ -+ if (five_taps) -+ return calc_fclk_five_taps(width, height, -+ out_width, out_height, color_mode); -+ -+ /* -+ * FIXME how to determine the 'A' factor -+ * for the no downscaling case ? -+ */ -+ -+ if (width > 3 * out_width) -+ hf = 4; -+ else if (width > 2 * out_width) -+ hf = 3; -+ else if (width > out_width) -+ hf = 2; -+ else -+ hf = 1; -+ -+ if (height > out_height) -+ vf = 2; -+ else -+ vf = 1; -+ -+ /* FIXME venc pclk? */ -+ return dispc_pclk_rate() * vf * hf; -+} -+ - static int _dispc_setup_plane(enum omap_plane plane, - enum omap_channel channel_out, - u32 paddr, u16 screen_width, -@@ -1294,7 +1360,7 @@ static int _dispc_setup_plane(enum omap_plane plane, - u8 rotation, int mirror) - { - const int maxdownscale = cpu_is_omap34xx() ? 4 : 2; -- bool five_taps = height > out_height * 2; -+ bool five_taps = 0; - bool fieldmode = 0; - int cconv = 0; - unsigned offset0, offset1; -@@ -1323,8 +1389,8 @@ static int _dispc_setup_plane(enum omap_plane plane, - } - } else { - /* video plane */ -- if (width > (2048 >> five_taps)) -- return -EINVAL; -+ -+ unsigned long fclk; - - if (out_width < width / maxdownscale || - out_width > width * 8) -@@ -1356,6 +1422,30 @@ static int _dispc_setup_plane(enum omap_plane plane, - default: - return -EINVAL; - } -+ -+ /* Must use 5-tap filter? */ -+ five_taps = height > out_height * 2; -+ -+ /* Try to use 5-tap filter whenever possible. */ -+ if (cpu_is_omap34xx() && !five_taps && -+ height > out_height && width <= 1024) { -+ fclk = calc_fclk_five_taps(width, height, -+ out_width, out_height, color_mode); -+ if (fclk <= dispc_fclk_rate()) -+ five_taps = true; -+ } -+ -+ if (width > (2048 >> five_taps)) -+ return -EINVAL; -+ -+ fclk = calc_fclk(width, height, out_width, out_height, -+ color_mode, five_taps); -+ -+ DSSDBG("required fclk rate = %lu Hz\n", fclk); -+ DSSDBG("current fclk rate = %lu Hz\n", dispc_fclk_rate()); -+ -+ if (fclk > dispc_fclk_rate()) -+ return -EINVAL; - } - - if (ilace && height >= out_height) -@@ -1399,7 +1489,7 @@ static int _dispc_setup_plane(enum omap_plane plane, - if (plane != OMAP_DSS_GFX) { - _dispc_set_scaling(plane, width, height, - out_width, out_height, -- ilace); -+ ilace, five_taps); - _dispc_set_vid_size(plane, out_width, out_height); - _dispc_set_vid_color_conv(plane, cconv); - } --- -1.5.6.5 - |