diff options
Diffstat (limited to 'recipes/linux/linux-omap-pm/dss2/0061-DSS2-VRFB-save-restore-context.patch')
| -rw-r--r-- | recipes/linux/linux-omap-pm/dss2/0061-DSS2-VRFB-save-restore-context.patch | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-pm/dss2/0061-DSS2-VRFB-save-restore-context.patch b/recipes/linux/linux-omap-pm/dss2/0061-DSS2-VRFB-save-restore-context.patch new file mode 100644 index 0000000000..a0b694736b --- /dev/null +++ b/recipes/linux/linux-omap-pm/dss2/0061-DSS2-VRFB-save-restore-context.patch @@ -0,0 +1,106 @@ +From e58576ceca922bfe4c793e6f77a873c4ea14f768 Mon Sep 17 00:00:00 2001 +From: Imre Deak <imre.deak@nokia.com> +Date: Tue, 5 May 2009 09:05:12 +0300 +Subject: [PATCH 61/69] DSS2: VRFB: save / restore context + +The VRFB is part of the SMS and supplied by the core power domain; do +the context saving while VRFB is configured and restore it along with +the rest of the domain context. + +This patch only implements the restore functionality, but not the +actual call to the restore. That belongs to PM functionality. +--- + arch/arm/plat-omap/include/mach/vrfb.h | 1 + + arch/arm/plat-omap/vrfb.c | 50 ++++++++++++++++++++++++++----- + 2 files changed, 43 insertions(+), 8 deletions(-) + +diff --git a/arch/arm/plat-omap/include/mach/vrfb.h b/arch/arm/plat-omap/include/mach/vrfb.h +index 12c7fab..ee6c062 100644 +--- a/arch/arm/plat-omap/include/mach/vrfb.h ++++ b/arch/arm/plat-omap/include/mach/vrfb.h +@@ -44,5 +44,6 @@ extern void omap_vrfb_adjust_size(u16 *width, u16 *height, + extern void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr, + u16 width, u16 height, + enum omap_color_mode color_mode); ++extern void omap_vrfb_restore_context(void); + + #endif /* __VRFB_H */ +diff --git a/arch/arm/plat-omap/vrfb.c b/arch/arm/plat-omap/vrfb.c +index 2ae0d68..649803e 100644 +--- a/arch/arm/plat-omap/vrfb.c ++++ b/arch/arm/plat-omap/vrfb.c +@@ -39,6 +39,33 @@ + /* bitmap of reserved contexts */ + static unsigned ctx_map; + ++/* ++ * Access to this happens from client drivers or the PM core after wake-up. ++ * For the first case we require locking at the driver level, for the second ++ * we don't need locking, since no drivers will run until after the wake-up ++ * has finished. ++ */ ++struct { ++ u32 physical_ba; ++ u32 control; ++ u32 size; ++} vrfb_hw_context[VRFB_NUM_CTXS]; ++ ++void omap_vrfb_restore_context(void) ++{ ++ int i; ++ ++ 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)); ++ } ++} ++ + void omap_vrfb_adjust_size(u16 *width, u16 *height, + u8 bytespp) + { +@@ -56,6 +83,8 @@ void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr, + u16 vrfb_height; + u8 ctx = vrfb->context; + u8 bytespp; ++ u32 size; ++ u32 control; + + DBG("omapfb_set_vrfb(%d, %lx, %dx%d, %d)\n", ctx, paddr, + width, height, bytespp); +@@ -100,15 +129,20 @@ void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr, + + DBG("vrfb w %u, h %u\n", vrfb_width, vrfb_height); + ++ size = vrfb_width << SMS_IMAGEWIDTH_OFFSET; ++ size |= vrfb_height << SMS_IMAGEHEIGHT_OFFSET; ++ ++ control = pixel_size_exp << SMS_PS_OFFSET; ++ control |= VRFB_PAGE_WIDTH_EXP << SMS_PW_OFFSET; ++ control |= VRFB_PAGE_HEIGHT_EXP << SMS_PH_OFFSET; ++ ++ vrfb_hw_context[ctx].physical_ba = paddr; ++ vrfb_hw_context[ctx].size = size; ++ vrfb_hw_context[ctx].control = control; ++ + omap_writel(paddr, SMS_ROT_PHYSICAL_BA(ctx)); +- omap_writel((vrfb_width << SMS_IMAGEWIDTH_OFFSET) | +- (vrfb_height << SMS_IMAGEHEIGHT_OFFSET), +- SMS_ROT_SIZE(ctx)); +- +- omap_writel(pixel_size_exp << SMS_PS_OFFSET | +- VRFB_PAGE_WIDTH_EXP << SMS_PW_OFFSET | +- VRFB_PAGE_HEIGHT_EXP << SMS_PH_OFFSET, +- SMS_ROT_CONTROL(ctx)); ++ omap_writel(size, SMS_ROT_SIZE(ctx)); ++ omap_writel(control, SMS_ROT_CONTROL(ctx)); + + DBG("vrfb offset pixels %d, %d\n", + vrfb_width - width, vrfb_height - height); +-- +1.6.2.4 + |