linux-omap-pm git: update to latest git, refresh DSS2 patches

1 files changed, 183 insertions, 0 deletions

diff --git a/recipes/linux/linux-omap-pm/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch b/recipes/linux/linux-omap-pm/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch
new file mode 100644
index 0000000000..daa95ca50d
--- /dev/null
+++ b/recipes/linux/linux-omap-pm/dss2/0019-DSS2-Check-fclk-limits-when-configuring-video-plane.patch
@@ -0,0 +1,183 @@
+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
+