linux-omap-pm git: start syncing with linux-omap non-pm

* also add dvsdk defines to omap3.inc

1 files changed, 216 insertions, 0 deletions

diff --git a/recipes/linux/linux-omap-pm/dss2/0065-VRFB-add-suspend-resume-functionality.patch b/recipes/linux/linux-omap-pm/dss2/0065-VRFB-add-suspend-resume-functionality.patch
new file mode 100644
index 0000000000..17f959cb27
--- /dev/null
+++ b/recipes/linux/linux-omap-pm/dss2/0065-VRFB-add-suspend-resume-functionality.patch
@@ -0,0 +1,216 @@
+From 1269429fe6ddd6e5f15e3b4edb4fc2bcd6fc0410 Mon Sep 17 00:00:00 2001
+From: Imre Deak <imre.deak@nokia.com>
+Date: Tue, 5 May 2009 11:16:13 +0200
+Subject: [PATCH 65/69] VRFB: add suspend/resume functionality
+
+At the moment the VRFB context is restored at each core power domain
+OFF->ON transition. This is not optimal since the VRFB might be unused
+temporarily for example when the screen is blanked. Add a suspend /
+resume function to mark these unused periods during which we'll avoid
+thea the context restore.
+
+Use atomic bitops for ctx_map for consistency.
+
+Signed-off-by: Imre Deak <imre.deak@nokia.com>
+---
+ arch/arm/plat-omap/include/mach/vrfb.h   |    2 +
+ arch/arm/plat-omap/vrfb.c                |   75 ++++++++++++++++++++++++-----
+ drivers/video/omap2/omapfb/omapfb-main.c |   28 +++++++++++
+ 3 files changed, 92 insertions(+), 13 deletions(-)
+
+diff --git a/arch/arm/plat-omap/include/mach/vrfb.h b/arch/arm/plat-omap/include/mach/vrfb.h
+index ee6c062..9647d82 100644
+--- a/arch/arm/plat-omap/include/mach/vrfb.h
++++ b/arch/arm/plat-omap/include/mach/vrfb.h
+@@ -39,6 +39,8 @@ struct vrfb
+ 
+ extern int omap_vrfb_request_ctx(struct vrfb *vrfb);
+ extern void omap_vrfb_release_ctx(struct vrfb *vrfb);
++extern void omap_vrfb_suspend_ctx(struct vrfb *vrfb);
++extern void omap_vrfb_resume_ctx(struct vrfb *vrfb);
+ extern void omap_vrfb_adjust_size(u16 *width, u16 *height,
+ 		u8 bytespp);
+ extern void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
+diff --git a/arch/arm/plat-omap/vrfb.c b/arch/arm/plat-omap/vrfb.c
+index 289fc8a..29f04e2 100644
+--- a/arch/arm/plat-omap/vrfb.c
++++ b/arch/arm/plat-omap/vrfb.c
+@@ -1,7 +1,9 @@
+ #include <linux/kernel.h>
+ #include <linux/module.h>
+ #include <linux/ioport.h>
++
+ #include <asm/io.h>
++#include <asm/bitops.h>
+ 
+ #include <mach/io.h>
+ #include <mach/vrfb.h>
+@@ -37,7 +39,9 @@
+ 
+ #define VRFB_NUM_CTXS 12
+ /* bitmap of reserved contexts */
+-static unsigned ctx_map;
++static unsigned long ctx_map;
++/* bitmap of contexts for which we have to keep the HW context valid */
++static unsigned long ctx_map_active;
+ 
+ /*
+  * Access to this happens from client drivers or the PM core after wake-up.
+@@ -51,18 +55,23 @@ struct {
+ 	u32 size;
+ } vrfb_hw_context[VRFB_NUM_CTXS];
+ 
++static void inline restore_hw_context(int ctx)
++{
++	omap_writel(vrfb_hw_context[ctx].control, SMS_ROT_CONTROL(ctx));
++	omap_writel(vrfb_hw_context[ctx].size, SMS_ROT_SIZE(ctx));
++	omap_writel(vrfb_hw_context[ctx].physical_ba, SMS_ROT_PHYSICAL_BA(ctx));
++}
++
+ void omap_vrfb_restore_context(void)
+ {
+ 	int i;
++	unsigned long map = ctx_map_active;
+ 
+-	for (i = 0; i < VRFB_NUM_CTXS; i++) {
+-		/* Restore only the active contexts */
+-		if (!(ctx_map & (1 << i)))
+-			continue;
+-		omap_writel(vrfb_hw_context[i].control, SMS_ROT_CONTROL(i));
+-		omap_writel(vrfb_hw_context[i].size, SMS_ROT_SIZE(i));
+-		omap_writel(vrfb_hw_context[i].physical_ba,
+-			    SMS_ROT_PHYSICAL_BA(i));
++	for (i = ffs(map); i; i = ffs(map)) {
++		/* i=1..32 */
++		i--;
++		map &= ~(1 << i);
++		restore_hw_context(i);
+ 	}
+ }
+ 
+@@ -156,13 +165,20 @@ EXPORT_SYMBOL(omap_vrfb_setup);
+ void omap_vrfb_release_ctx(struct vrfb *vrfb)
+ {
+ 	int rot;
++	int ctx = vrfb->context;
+ 
+-	if (vrfb->context == 0xff)
++	if (ctx == 0xff)
+ 		return;
+ 
+-	DBG("release ctx %d\n", vrfb->context);
++	DBG("release ctx %d\n", ctx);
+ 
+-	ctx_map &= ~(1 << vrfb->context);
++	if (!(ctx_map & (1 << ctx))) {
++		BUG();
++		return;
++	}
++	WARN_ON(!(ctx_map_active & (1 << ctx)));
++	clear_bit(ctx, &ctx_map_active);
++	clear_bit(ctx, &ctx_map);
+ 
+ 	for (rot = 0; rot < 4; ++rot) {
+ 		if(vrfb->paddr[rot]) {
+@@ -194,7 +210,9 @@ int omap_vrfb_request_ctx(struct vrfb *vrfb)
+ 
+ 	DBG("found free ctx %d\n", ctx);
+ 
+-	ctx_map |= 1 << ctx;
++	set_bit(ctx, &ctx_map);
++	WARN_ON(ctx_map_active & (1 << ctx));
++	set_bit(ctx, &ctx_map_active);
+ 
+ 	memset(vrfb, 0, sizeof(*vrfb));
+ 
+@@ -219,3 +237,34 @@ int omap_vrfb_request_ctx(struct vrfb *vrfb)
+ }
+ EXPORT_SYMBOL(omap_vrfb_request_ctx);
+ 
++void omap_vrfb_suspend_ctx(struct vrfb *vrfb)
++{
++	DBG("suspend ctx %d\n", vrfb->context);
++	if (vrfb->context >= VRFB_NUM_CTXS ||
++	    (!(1 << vrfb->context) & ctx_map_active)) {
++		BUG();
++		return;
++	}
++	clear_bit(vrfb->context, &ctx_map_active);
++}
++EXPORT_SYMBOL(omap_vrfb_suspend_ctx);
++
++void omap_vrfb_resume_ctx(struct vrfb *vrfb)
++{
++	DBG("resume ctx %d\n", vrfb->context);
++	if (vrfb->context >= VRFB_NUM_CTXS ||
++	    ((1 << vrfb->context) & ctx_map_active)) {
++		BUG();
++		return;
++	}
++	/*
++	 * omap_vrfb_restore_context is normally called by the core domain
++	 * save / restore logic, but since this VRFB context was suspended
++	 * those calls didn't actually restore the context and now we might
++	 * have an invalid context. Do an explicit restore here.
++	 */
++	restore_hw_context(vrfb->context);
++	set_bit(vrfb->context, &ctx_map_active);
++}
++EXPORT_SYMBOL(omap_vrfb_resume_ctx);
++
+diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
+index 76e7c6c..4bb74b7 100644
+--- a/drivers/video/omap2/omapfb/omapfb-main.c
++++ b/drivers/video/omap2/omapfb/omapfb-main.c
+@@ -1036,6 +1036,30 @@ static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
+ 	return 0;
+ }
+ 
++static void omapfb_vrfb_suspend_all(struct omapfb2_device *fbdev)
++{
++	int i;
++
++	for (i = 0; i < fbdev->num_fbs; i++) {
++		struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
++
++		if (ofbi->region.vrfb.vaddr[0])
++			omap_vrfb_suspend_ctx(&ofbi->region.vrfb);
++	}
++}
++
++static void omapfb_vrfb_resume_all(struct omapfb2_device *fbdev)
++{
++	int i;
++
++	for (i = 0; i < fbdev->num_fbs; i++) {
++		struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
++
++		if (ofbi->region.vrfb.vaddr[0])
++			omap_vrfb_resume_ctx(&ofbi->region.vrfb);
++	}
++}
++
+ static int omapfb_blank(int blank, struct fb_info *fbi)
+ {
+ 	struct omapfb_info *ofbi = FB2OFB(fbi);
+@@ -1051,6 +1075,8 @@ static int omapfb_blank(int blank, struct fb_info *fbi)
+ 		if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
+ 			goto exit;
+ 
++		omapfb_vrfb_resume_all(fbdev);
++
+ 		if (display->resume)
+ 			r = display->resume(display);
+ 
+@@ -1073,6 +1099,8 @@ static int omapfb_blank(int blank, struct fb_info *fbi)
+ 		if (display->suspend)
+ 			r = display->suspend(display);
+ 
++		omapfb_vrfb_suspend_all(fbdev);
++
+ 		break;
+ 
+ 	default:
+-- 
+1.6.2.4
+