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gerrit-public.fairphone.software / kernel / msm-4.9 / eb032b9837a958e21ca000358a5bde5e17192ddb / . / drivers / bcma / driver_chipcommon_pmu.c
blob: b4eb33524eb6375b412f11b0da786383558ff3c7 [file] [log] [blame]
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200[diff] [blame]1/*
2 * Broadcom specific AMBA
3 * ChipCommon Power Management Unit driver
4 *
Michael Büscheb032b92011-07-04 20:50:05 +0200[diff] [blame^]5 * Copyright 2009, Michael Buesch <m@bues.ch>
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200[diff] [blame]6 * Copyright 2007, Broadcom Corporation
7 *
8 * Licensed under the GNU/GPL. See COPYING for details.
9 */
10
11#include "bcma_private.h"
12#include <linux/bcma/bcma.h>
13
14static void bcma_chipco_chipctl_maskset(struct bcma_drv_cc *cc,
15 u32 offset, u32 mask, u32 set)
16{
17 u32 value;
18
19 bcma_cc_read32(cc, BCMA_CC_CHIPCTL_ADDR);
20 bcma_cc_write32(cc, BCMA_CC_CHIPCTL_ADDR, offset);
21 bcma_cc_read32(cc, BCMA_CC_CHIPCTL_ADDR);
22 value = bcma_cc_read32(cc, BCMA_CC_CHIPCTL_DATA);
23 value &= mask;
24 value |= set;
25 bcma_cc_write32(cc, BCMA_CC_CHIPCTL_DATA, value);
26 bcma_cc_read32(cc, BCMA_CC_CHIPCTL_DATA);
27}
28
29static void bcma_pmu_pll_init(struct bcma_drv_cc *cc)
30{
31 struct bcma_bus *bus = cc->core->bus;
32
33 switch (bus->chipinfo.id) {
34 case 0x4313:
35 case 0x4331:
36 case 43224:
37 case 43225:
38 break;
39 default:
40 pr_err("PLL init unknown for device 0x%04X\n",
41 bus->chipinfo.id);
42 }
43}
44
45static void bcma_pmu_resources_init(struct bcma_drv_cc *cc)
46{
47 struct bcma_bus *bus = cc->core->bus;
48 u32 min_msk = 0, max_msk = 0;
49
50 switch (bus->chipinfo.id) {
51 case 0x4313:
52 min_msk = 0x200D;
53 max_msk = 0xFFFF;
54 break;
55 case 43224:
56 break;
57 default:
58 pr_err("PMU resource config unknown for device 0x%04X\n",
59 bus->chipinfo.id);
60 }
61
62 /* Set the resource masks. */
63 if (min_msk)
64 bcma_cc_write32(cc, BCMA_CC_PMU_MINRES_MSK, min_msk);
65 if (max_msk)
66 bcma_cc_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);
67}
68
69void bcma_pmu_swreg_init(struct bcma_drv_cc *cc)
70{
71 struct bcma_bus *bus = cc->core->bus;
72
73 switch (bus->chipinfo.id) {
74 case 0x4313:
75 case 0x4331:
76 case 43224:
77 break;
78 default:
79 pr_err("PMU switch/regulators init unknown for device "
80 "0x%04X\n", bus->chipinfo.id);
81 }
82}
83
84void bcma_pmu_workarounds(struct bcma_drv_cc *cc)
85{
86 struct bcma_bus *bus = cc->core->bus;
87
88 switch (bus->chipinfo.id) {
89 case 0x4313:
90 bcma_chipco_chipctl_maskset(cc, 0, ~0, 0x7);
91 break;
92 case 0x4331:
93 pr_err("Enabling Ext PA lines not implemented\n");
94 break;
95 case 43224:
96 if (bus->chipinfo.rev == 0) {
97 pr_err("Workarounds for 43224 rev 0 not fully "
98 "implemented\n");
99 bcma_chipco_chipctl_maskset(cc, 0, ~0, 0xF0);
100 } else {
101 bcma_chipco_chipctl_maskset(cc, 0, ~0, 0xF0);
102 }
103 break;
104 default:
105 pr_err("Workarounds unknown for device 0x%04X\n",
106 bus->chipinfo.id);
107 }
108}
109
110void bcma_pmu_init(struct bcma_drv_cc *cc)
111{
112 u32 pmucap;
113
114 pmucap = bcma_cc_read32(cc, BCMA_CC_PMU_CAP);
115 cc->pmu.rev = (pmucap & BCMA_CC_PMU_CAP_REVISION);
116
117 pr_debug("Found rev %u PMU (capabilities 0x%08X)\n", cc->pmu.rev,
118 pmucap);
119
120 if (cc->pmu.rev == 1)
121 bcma_cc_mask32(cc, BCMA_CC_PMU_CTL,
122 ~BCMA_CC_PMU_CTL_NOILPONW);
123 else
124 bcma_cc_set32(cc, BCMA_CC_PMU_CTL,
125 BCMA_CC_PMU_CTL_NOILPONW);
126
127 if (cc->core->id.id == 0x4329 && cc->core->id.rev == 2)
128 pr_err("Fix for 4329b0 bad LPOM state not implemented!\n");
129
130 bcma_pmu_pll_init(cc);
131 bcma_pmu_resources_init(cc);
132 bcma_pmu_swreg_init(cc);
133 bcma_pmu_workarounds(cc);
134}