diff options
author | 2016-04-11 10:41:07 +0300 | |
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committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm/mach-exynos/s5p-dev-mfc.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm/mach-exynos/s5p-dev-mfc.c')
-rw-r--r-- | kernel/arch/arm/mach-exynos/s5p-dev-mfc.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-exynos/s5p-dev-mfc.c b/kernel/arch/arm/mach-exynos/s5p-dev-mfc.c new file mode 100644 index 000000000..0b04b6b0f --- /dev/null +++ b/kernel/arch/arm/mach-exynos/s5p-dev-mfc.c @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd + * + * Base S5P MFC resource and device definitions + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/memblock.h> +#include <linux/ioport.h> +#include <linux/of_fdt.h> +#include <linux/of.h> + +static struct platform_device s5p_device_mfc_l; +static struct platform_device s5p_device_mfc_r; + +struct s5p_mfc_dt_meminfo { + unsigned long loff; + unsigned long lsize; + unsigned long roff; + unsigned long rsize; + char *compatible; +}; + +struct s5p_mfc_reserved_mem { + phys_addr_t base; + unsigned long size; + struct device *dev; +}; + +static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata; + + +static void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize, + phys_addr_t lbase, unsigned int lsize) +{ + int i; + + s5p_mfc_mem[0].dev = &s5p_device_mfc_r.dev; + s5p_mfc_mem[0].base = rbase; + s5p_mfc_mem[0].size = rsize; + + s5p_mfc_mem[1].dev = &s5p_device_mfc_l.dev; + s5p_mfc_mem[1].base = lbase; + s5p_mfc_mem[1].size = lsize; + + for (i = 0; i < ARRAY_SIZE(s5p_mfc_mem); i++) { + struct s5p_mfc_reserved_mem *area = &s5p_mfc_mem[i]; + if (memblock_remove(area->base, area->size)) { + printk(KERN_ERR "Failed to reserve memory for MFC device (%ld bytes at 0x%08lx)\n", + area->size, (unsigned long) area->base); + area->base = 0; + } + } +} + +int __init s5p_fdt_alloc_mfc_mem(unsigned long node, const char *uname, + int depth, void *data) +{ + const __be32 *prop; + int len; + struct s5p_mfc_dt_meminfo mfc_mem; + + if (!data) + return 0; + + if (!of_flat_dt_is_compatible(node, data)) + return 0; + + prop = of_get_flat_dt_prop(node, "samsung,mfc-l", &len); + if (!prop || (len != 2 * sizeof(unsigned long))) + return 0; + + mfc_mem.loff = be32_to_cpu(prop[0]); + mfc_mem.lsize = be32_to_cpu(prop[1]); + + prop = of_get_flat_dt_prop(node, "samsung,mfc-r", &len); + if (!prop || (len != 2 * sizeof(unsigned long))) + return 0; + + mfc_mem.roff = be32_to_cpu(prop[0]); + mfc_mem.rsize = be32_to_cpu(prop[1]); + + s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, + mfc_mem.loff, mfc_mem.lsize); + + return 1; +} |