diff options
author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-09-24 09:29:24 +0200 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-09-24 09:32:53 +0200 |
commit | b599c89e8c5cf0c37352e0871be240291f8ce922 (patch) | |
tree | a03ce75b3a3d6d39852bc201b26bcfab412bf55f /arch/blackfin/mach-common/scb-init.c | |
parent | ee1452d7458451a7508e0663553ce88d63958157 (diff) | |
parent | 4a10c2ac2f368583138b774ca41fac4207911983 (diff) |
Merge tag 'v3.12-rc2' into drm-intel-next
Backmerge Linux 3.12-rc2 to prep for a bunch of -next patches:
- Header cleanup in intel_drv.h, both changed in -fixes and my current
-next pile.
- Cursor handling cleanup for -next which depends upon the cursor
handling fix merged into -rc2.
All just trivial conflicts of the "changed adjacent lines" type:
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_drv.h
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'arch/blackfin/mach-common/scb-init.c')
-rw-r--r-- | arch/blackfin/mach-common/scb-init.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/scb-init.c b/arch/blackfin/mach-common/scb-init.c new file mode 100644 index 00000000000..2cbfb0b5679 --- /dev/null +++ b/arch/blackfin/mach-common/scb-init.c @@ -0,0 +1,53 @@ +/* + * arch/blackfin/mach-common/scb-init.c - reprogram system cross bar priority + * + * Copyright 2012 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <asm/scb.h> + +__attribute__((l1_text)) +inline void scb_mi_write(unsigned long scb_mi_arbw, unsigned int slots, + unsigned char *scb_mi_prio) +{ + unsigned int i; + + for (i = 0; i < slots; ++i) + bfin_write32(scb_mi_arbw, (i << SCB_SLOT_OFFSET) | scb_mi_prio[i]); +} + +__attribute__((l1_text)) +inline void scb_mi_read(unsigned long scb_mi_arbw, unsigned int slots, + unsigned char *scb_mi_prio) +{ + unsigned int i; + + for (i = 0; i < slots; ++i) { + bfin_write32(scb_mi_arbw, (0xFF << SCB_SLOT_OFFSET) | i); + scb_mi_prio[i] = bfin_read32(scb_mi_arbw); + } +} + +__attribute__((l1_text)) +void init_scb(void) +{ + unsigned int i, j; + unsigned char scb_tmp_prio[32]; + + pr_info("Init System Crossbar\n"); + for (i = 0; scb_data[i].scb_mi_arbr > 0; ++i) { + + scb_mi_write(scb_data[i].scb_mi_arbw, scb_data[i].scb_mi_slots, scb_data[i].scb_mi_prio); + + pr_debug("scb priority at 0x%lx:\n", scb_data[i].scb_mi_arbr); + scb_mi_read(scb_data[i].scb_mi_arbw, scb_data[i].scb_mi_slots, scb_tmp_prio); + for (j = 0; j < scb_data[i].scb_mi_slots; ++j) + pr_debug("slot %d = %d\n", j, scb_tmp_prio[j]); + } + +} |