/* * POWER Data Stream Control Register (DSCR) * * This header file contains helper functions and macros * required for all the DSCR related test cases. * * Copyright 2012, Anton Blanchard, IBM Corporation. * Copyright 2015, Anshuman Khandual, IBM Corporation. * * 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. */ #ifndef _SELFTESTS_POWERPC_DSCR_DSCR_H #define _SELFTESTS_POWERPC_DSCR_DSCR_H #include #include #include #include #include #include #include #include #include #include #include #include "utils.h" #define THREADS 100 /* Max threads */ #define COUNT 100 /* Max iterations */ #define DSCR_MAX 16 /* Max DSCR value */ #define LEN_MAX 100 /* Max name length */ #define DSCR_DEFAULT "/sys/devices/system/cpu/dscr_default" #define CPU_PATH "/sys/devices/system/cpu/" #define rmb() asm volatile("lwsync":::"memory") #define wmb() asm volatile("lwsync":::"memory") #define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x)) /* Prilvilege state DSCR access */ inline unsigned long get_dscr(void) { unsigned long ret; asm volatile("mfspr %0,%1" : "=r" (ret) : "i" (SPRN_DSCR_PRIV)); return ret; } inline void set_dscr(unsigned long val) { asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR_PRIV)); } /* Problem state DSCR access */ inline unsigned long get_dscr_usr(void) { unsigned long ret; asm volatile("mfspr %0,%1" : "=r" (ret) : "i" (SPRN_DSCR)); return ret; } inline void set_dscr_usr(unsigned long val) { asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR)); } /* Default DSCR access */ unsigned long get_default_dscr(void) { int fd = -1, ret; char buf[16]; unsigned long val; if (fd == -1) { fd = open(DSCR_DEFAULT, O_RDONLY); if (fd == -1) { perror("open() failed"); exit(1); } } memset(buf, 0, sizeof(buf)); lseek(fd, 0, SEEK_SET); ret = read(fd, buf, sizeof(buf)); if (ret == -1) { perror("read() failed"); exit(1); } sscanf(buf, "%lx", &val); close(fd); return val; } void set_default_dscr(unsigned long val) { int fd = -1, ret; char buf[16]; if (fd == -1) { fd = open(DSCR_DEFAULT, O_RDWR); if (fd == -1) { perror("open() failed"); exit(1); } } sprintf(buf, "%lx\n", val); ret = write(fd, buf, strlen(buf)); if (ret == -1) { perror("write() failed"); exit(1); } close(fd); } double uniform_deviate(int seed) { return seed * (1.0 / (RAND_MAX + 1.0)); } #endif /* _SELFTESTS_POWERPC_DSCR_DSCR_H */ ref='/cgit.cgi/linux/net-next.git/log/?id=722d82830a04ccff6c7390535fcdfb1e4d69d126&showmsg=1'>root/net/llc/Kconfig
8e9856b1eed314bc00'>cs46xx/cs46xx.c
diff options
AgeCommit message (Collapse)AuthorFilesLines
context:
space:
mode:
authorMark Brown <broonie@kernel.org>2016-11-04 12:16:38 -0600
committerMark Brown <broonie@kernel.org>2016-11-04 12:16:38 -0600
commitcc9b94029e9ef51787af908e9856b1eed314bc00 (patch)
tree9675310b89d0f6fb1f7bd9423f0638c4ee5226fd /sound/pci/cs46xx/cs46xx.c
parent13bed58ce8748d430a26e353a09b89f9d613a71f (diff)
parent1b5b42216469b05ef4b5916cb40b127dfab1da88 (diff)
Merge branch 'topic/error' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-fixed
Diffstat (limited to 'sound/pci/cs46xx/cs46xx.c')