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gerrit-public.fairphone.software / kernel / msm-4.9 / 517f43e5a922d51ac960424de4f72676fe6a7390 / . / drivers / bcma / driver_chipcommon_pmu.c
blob: fcc63db0ce7542ded6428071103315370dda11cb [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:
Rafał Miłecki91fa4b02011-06-17 13:15:23 +0200[diff] [blame]56 case 43225:
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200[diff] [blame]57 break;
58 default:
59 pr_err("PMU resource config unknown for device 0x%04X\n",
60 bus->chipinfo.id);
61 }
62
63 /* Set the resource masks. */
64 if (min_msk)
65 bcma_cc_write32(cc, BCMA_CC_PMU_MINRES_MSK, min_msk);
66 if (max_msk)
67 bcma_cc_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);
68}
69
70void bcma_pmu_swreg_init(struct bcma_drv_cc *cc)
71{
72 struct bcma_bus *bus = cc->core->bus;
73
74 switch (bus->chipinfo.id) {
75 case 0x4313:
76 case 0x4331:
77 case 43224:
Rafał Miłecki91fa4b02011-06-17 13:15:23 +0200[diff] [blame]78 case 43225:
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200[diff] [blame]79 break;
80 default:
81 pr_err("PMU switch/regulators init unknown for device "
82 "0x%04X\n", bus->chipinfo.id);
83 }
84}
85
86void bcma_pmu_workarounds(struct bcma_drv_cc *cc)
87{
88 struct bcma_bus *bus = cc->core->bus;
89
90 switch (bus->chipinfo.id) {
91 case 0x4313:
92 bcma_chipco_chipctl_maskset(cc, 0, ~0, 0x7);
93 break;
94 case 0x4331:
95 pr_err("Enabling Ext PA lines not implemented\n");
96 break;
97 case 43224:
98 if (bus->chipinfo.rev == 0) {
99 pr_err("Workarounds for 43224 rev 0 not fully "
100 "implemented\n");
Rafał Miłecki898f6992011-06-17 13:15:24 +0200[diff] [blame]101 bcma_chipco_chipctl_maskset(cc, 0, ~0, 0x00F000F0);
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200[diff] [blame]102 } else {
103 bcma_chipco_chipctl_maskset(cc, 0, ~0, 0xF0);
104 }
105 break;
Rafał Miłecki91fa4b02011-06-17 13:15:23 +0200[diff] [blame]106 case 43225:
107 break;
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200[diff] [blame]108 default:
109 pr_err("Workarounds unknown for device 0x%04X\n",
110 bus->chipinfo.id);
111 }
112}
113
114void bcma_pmu_init(struct bcma_drv_cc *cc)
115{
116 u32 pmucap;
117
118 pmucap = bcma_cc_read32(cc, BCMA_CC_PMU_CAP);
119 cc->pmu.rev = (pmucap & BCMA_CC_PMU_CAP_REVISION);
120
121 pr_debug("Found rev %u PMU (capabilities 0x%08X)\n", cc->pmu.rev,
122 pmucap);
123
124 if (cc->pmu.rev == 1)
125 bcma_cc_mask32(cc, BCMA_CC_PMU_CTL,
126 ~BCMA_CC_PMU_CTL_NOILPONW);
127 else
128 bcma_cc_set32(cc, BCMA_CC_PMU_CTL,
129 BCMA_CC_PMU_CTL_NOILPONW);
130
131 if (cc->core->id.id == 0x4329 && cc->core->id.rev == 2)
132 pr_err("Fix for 4329b0 bad LPOM state not implemented!\n");
133
134 bcma_pmu_pll_init(cc);
135 bcma_pmu_resources_init(cc);
136 bcma_pmu_swreg_init(cc);
137 bcma_pmu_workarounds(cc);
138}