/* * 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 */ lue='search'/>
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authorManuel Lauss <manuel.lauss@gmail.com>2017-01-24 10:12:00 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-01-24 10:27:34 -0800
commit3f5c34c6d4688b3b7e1dbc7bbc68a2f03a0d6b0c (patch)
treeb9387d85890c4466d9cf3d3145c95e0b07235234 /sound/soc/intel/common/sst-acpi.c
parent62ed8ceda1699acae01b666497f004bfd3d67a6f (diff)
Input: wm97xx - make missing platform data non-fatal
Commit 6480af4915d6 ("power_supply: wm97xx_battery: use power_supply_get_drvdata") made wm97xx platform data mandatory, although it's still optional. This patch fixes an oops during driver probe on one of my MIPS boards with a wm9712. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'sound/soc/intel/common/sst-acpi.c')