Revision d6ee1e7e9004d3d246cdfa14196989e0a9466c16 authored by Jerome Brunet on 08 November 2018, 09:31:23 UTC, committed by Stephen Boyd on 08 November 2018, 18:21:21 UTC
Similar to gxbb and gxl platforms, axg SCPI Cortex-M co-processor uses the fdiv2 and fdiv3 to, among other things, provide the cpu clock. Until clock hand-off mechanism makes its way to CCF and the generic SCPI claims platform specific clocks, these clocks must be marked as critical to make sure they are never disabled when needed by the co-processor. Fixes: 05f814402d61 ("clk: meson: add fdiv clock gates") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
1 parent e2576c8
lz4.c
/*
* Cryptographic API.
*
* Copyright (c) 2013 Chanho Min <chanho.min@lge.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>
#include <crypto/internal/scompress.h>
struct lz4_ctx {
void *lz4_comp_mem;
};
static void *lz4_alloc_ctx(struct crypto_scomp *tfm)
{
void *ctx;
ctx = vmalloc(LZ4_MEM_COMPRESS);
if (!ctx)
return ERR_PTR(-ENOMEM);
return ctx;
}
static int lz4_init(struct crypto_tfm *tfm)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
ctx->lz4_comp_mem = lz4_alloc_ctx(NULL);
if (IS_ERR(ctx->lz4_comp_mem))
return -ENOMEM;
return 0;
}
static void lz4_free_ctx(struct crypto_scomp *tfm, void *ctx)
{
vfree(ctx);
}
static void lz4_exit(struct crypto_tfm *tfm)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
lz4_free_ctx(NULL, ctx->lz4_comp_mem);
}
static int __lz4_compress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
int out_len = LZ4_compress_default(src, dst,
slen, *dlen, ctx);
if (!out_len)
return -EINVAL;
*dlen = out_len;
return 0;
}
static int lz4_scompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lz4_compress_crypto(src, slen, dst, dlen, ctx);
}
static int lz4_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
return __lz4_compress_crypto(src, slen, dst, dlen, ctx->lz4_comp_mem);
}
static int __lz4_decompress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
int out_len = LZ4_decompress_safe(src, dst, slen, *dlen);
if (out_len < 0)
return -EINVAL;
*dlen = out_len;
return 0;
}
static int lz4_sdecompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lz4_decompress_crypto(src, slen, dst, dlen, NULL);
}
static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst,
unsigned int *dlen)
{
return __lz4_decompress_crypto(src, slen, dst, dlen, NULL);
}
static struct crypto_alg alg_lz4 = {
.cra_name = "lz4",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
.cra_ctxsize = sizeof(struct lz4_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(alg_lz4.cra_list),
.cra_init = lz4_init,
.cra_exit = lz4_exit,
.cra_u = { .compress = {
.coa_compress = lz4_compress_crypto,
.coa_decompress = lz4_decompress_crypto } }
};
static struct scomp_alg scomp = {
.alloc_ctx = lz4_alloc_ctx,
.free_ctx = lz4_free_ctx,
.compress = lz4_scompress,
.decompress = lz4_sdecompress,
.base = {
.cra_name = "lz4",
.cra_driver_name = "lz4-scomp",
.cra_module = THIS_MODULE,
}
};
static int __init lz4_mod_init(void)
{
int ret;
ret = crypto_register_alg(&alg_lz4);
if (ret)
return ret;
ret = crypto_register_scomp(&scomp);
if (ret) {
crypto_unregister_alg(&alg_lz4);
return ret;
}
return ret;
}
static void __exit lz4_mod_fini(void)
{
crypto_unregister_alg(&alg_lz4);
crypto_unregister_scomp(&scomp);
}
module_init(lz4_mod_init);
module_exit(lz4_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZ4 Compression Algorithm");
MODULE_ALIAS_CRYPTO("lz4");
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