1 /* 2 * Broadcom specific AMBA 3 * Core ops 4 * 5 * Licensed under the GNU/GPL. See COPYING for details. 6 */ 7 8 #include "bcma_private.h" 9 #include <linux/bcma/bcma.h> 10 11 bool bcma_core_is_enabled(struct bcma_device *core) 12 { 13 if ((bcma_aread32(core, BCMA_IOCTL) & (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC)) 14 != BCMA_IOCTL_CLK) 15 return false; 16 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET) 17 return false; 18 return true; 19 } 20 EXPORT_SYMBOL_GPL(bcma_core_is_enabled); 21 22 void bcma_core_disable(struct bcma_device *core, u32 flags) 23 { 24 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET) 25 return; 26 27 bcma_awrite32(core, BCMA_IOCTL, flags); 28 bcma_aread32(core, BCMA_IOCTL); 29 udelay(10); 30 31 bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET); 32 udelay(1); 33 } 34 EXPORT_SYMBOL_GPL(bcma_core_disable); 35 36 int bcma_core_enable(struct bcma_device *core, u32 flags) 37 { 38 bcma_core_disable(core, flags); 39 40 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags)); 41 bcma_aread32(core, BCMA_IOCTL); 42 43 bcma_awrite32(core, BCMA_RESET_CTL, 0); 44 udelay(1); 45 46 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags)); 47 bcma_aread32(core, BCMA_IOCTL); 48 udelay(1); 49 50 return 0; 51 } 52 EXPORT_SYMBOL_GPL(bcma_core_enable); 53