2 * Broadcom specific AMBA
5 * Licensed under the GNU/GPL. See COPYING for details.
8 #include "bcma_private.h"
9 #include <linux/export.h>
10 #include <linux/bcma/bcma.h>
12 bool bcma_core_is_enabled(struct bcma_device *core)
14 if ((bcma_aread32(core, BCMA_IOCTL) & (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC))
17 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
21 EXPORT_SYMBOL_GPL(bcma_core_is_enabled);
23 void bcma_core_disable(struct bcma_device *core, u32 flags)
25 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
28 bcma_awrite32(core, BCMA_IOCTL, flags);
29 bcma_aread32(core, BCMA_IOCTL);
32 bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
35 EXPORT_SYMBOL_GPL(bcma_core_disable);
37 int bcma_core_enable(struct bcma_device *core, u32 flags)
39 bcma_core_disable(core, flags);
41 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags));
42 bcma_aread32(core, BCMA_IOCTL);
44 bcma_awrite32(core, BCMA_RESET_CTL, 0);
47 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags));
48 bcma_aread32(core, BCMA_IOCTL);
53 EXPORT_SYMBOL_GPL(bcma_core_enable);
55 void bcma_core_set_clockmode(struct bcma_device *core,
56 enum bcma_clkmode clkmode)
60 WARN_ON(core->id.id != BCMA_CORE_CHIPCOMMON &&
61 core->id.id != BCMA_CORE_PCIE &&
62 core->id.id != BCMA_CORE_80211);
65 case BCMA_CLKMODE_FAST:
66 bcma_set32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
68 for (i = 0; i < 1500; i++) {
69 if (bcma_read32(core, BCMA_CLKCTLST) &
70 BCMA_CLKCTLST_HAVEHT) {
77 pr_err("HT force timeout\n");
79 case BCMA_CLKMODE_DYNAMIC:
80 pr_warn("Dynamic clockmode not supported yet!\n");
84 EXPORT_SYMBOL_GPL(bcma_core_set_clockmode);
86 void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on)
90 WARN_ON(req & ~BCMA_CLKCTLST_EXTRESREQ);
91 WARN_ON(status & ~BCMA_CLKCTLST_EXTRESST);
94 bcma_set32(core, BCMA_CLKCTLST, req);
95 for (i = 0; i < 10000; i++) {
96 if ((bcma_read32(core, BCMA_CLKCTLST) & status) ==
104 pr_err("PLL enable timeout\n");
106 pr_warn("Disabling PLL not supported yet!\n");
109 EXPORT_SYMBOL_GPL(bcma_core_pll_ctl);
111 u32 bcma_core_dma_translation(struct bcma_device *core)
113 switch (core->bus->hosttype) {
114 case BCMA_HOSTTYPE_SOC:
116 case BCMA_HOSTTYPE_PCI:
117 if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64)
118 return BCMA_DMA_TRANSLATION_DMA64_CMT;
120 return BCMA_DMA_TRANSLATION_DMA32_CMT;
122 pr_err("DMA translation unknown for host %d\n",
123 core->bus->hosttype);
125 return BCMA_DMA_TRANSLATION_NONE;
127 EXPORT_SYMBOL(bcma_core_dma_translation);