mirror of https://gitee.com/openkylin/linux.git
135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/*
|
|
* Broadcom specific AMBA
|
|
* ChipCommon Power Management Unit driver
|
|
*
|
|
* Copyright 2009, Michael Buesch <mb@bu3sch.de>
|
|
* Copyright 2007, Broadcom Corporation
|
|
*
|
|
* Licensed under the GNU/GPL. See COPYING for details.
|
|
*/
|
|
|
|
#include "bcma_private.h"
|
|
#include <linux/bcma/bcma.h>
|
|
|
|
static void bcma_chipco_chipctl_maskset(struct bcma_drv_cc *cc,
|
|
u32 offset, u32 mask, u32 set)
|
|
{
|
|
u32 value;
|
|
|
|
bcma_cc_read32(cc, BCMA_CC_CHIPCTL_ADDR);
|
|
bcma_cc_write32(cc, BCMA_CC_CHIPCTL_ADDR, offset);
|
|
bcma_cc_read32(cc, BCMA_CC_CHIPCTL_ADDR);
|
|
value = bcma_cc_read32(cc, BCMA_CC_CHIPCTL_DATA);
|
|
value &= mask;
|
|
value |= set;
|
|
bcma_cc_write32(cc, BCMA_CC_CHIPCTL_DATA, value);
|
|
bcma_cc_read32(cc, BCMA_CC_CHIPCTL_DATA);
|
|
}
|
|
|
|
static void bcma_pmu_pll_init(struct bcma_drv_cc *cc)
|
|
{
|
|
struct bcma_bus *bus = cc->core->bus;
|
|
|
|
switch (bus->chipinfo.id) {
|
|
case 0x4313:
|
|
case 0x4331:
|
|
case 43224:
|
|
case 43225:
|
|
break;
|
|
default:
|
|
pr_err("PLL init unknown for device 0x%04X\n",
|
|
bus->chipinfo.id);
|
|
}
|
|
}
|
|
|
|
static void bcma_pmu_resources_init(struct bcma_drv_cc *cc)
|
|
{
|
|
struct bcma_bus *bus = cc->core->bus;
|
|
u32 min_msk = 0, max_msk = 0;
|
|
|
|
switch (bus->chipinfo.id) {
|
|
case 0x4313:
|
|
min_msk = 0x200D;
|
|
max_msk = 0xFFFF;
|
|
break;
|
|
case 43224:
|
|
break;
|
|
default:
|
|
pr_err("PMU resource config unknown for device 0x%04X\n",
|
|
bus->chipinfo.id);
|
|
}
|
|
|
|
/* Set the resource masks. */
|
|
if (min_msk)
|
|
bcma_cc_write32(cc, BCMA_CC_PMU_MINRES_MSK, min_msk);
|
|
if (max_msk)
|
|
bcma_cc_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);
|
|
}
|
|
|
|
void bcma_pmu_swreg_init(struct bcma_drv_cc *cc)
|
|
{
|
|
struct bcma_bus *bus = cc->core->bus;
|
|
|
|
switch (bus->chipinfo.id) {
|
|
case 0x4313:
|
|
case 0x4331:
|
|
case 43224:
|
|
break;
|
|
default:
|
|
pr_err("PMU switch/regulators init unknown for device "
|
|
"0x%04X\n", bus->chipinfo.id);
|
|
}
|
|
}
|
|
|
|
void bcma_pmu_workarounds(struct bcma_drv_cc *cc)
|
|
{
|
|
struct bcma_bus *bus = cc->core->bus;
|
|
|
|
switch (bus->chipinfo.id) {
|
|
case 0x4313:
|
|
bcma_chipco_chipctl_maskset(cc, 0, ~0, 0x7);
|
|
break;
|
|
case 0x4331:
|
|
pr_err("Enabling Ext PA lines not implemented\n");
|
|
break;
|
|
case 43224:
|
|
if (bus->chipinfo.rev == 0) {
|
|
pr_err("Workarounds for 43224 rev 0 not fully "
|
|
"implemented\n");
|
|
bcma_chipco_chipctl_maskset(cc, 0, ~0, 0xF0);
|
|
} else {
|
|
bcma_chipco_chipctl_maskset(cc, 0, ~0, 0xF0);
|
|
}
|
|
break;
|
|
default:
|
|
pr_err("Workarounds unknown for device 0x%04X\n",
|
|
bus->chipinfo.id);
|
|
}
|
|
}
|
|
|
|
void bcma_pmu_init(struct bcma_drv_cc *cc)
|
|
{
|
|
u32 pmucap;
|
|
|
|
pmucap = bcma_cc_read32(cc, BCMA_CC_PMU_CAP);
|
|
cc->pmu.rev = (pmucap & BCMA_CC_PMU_CAP_REVISION);
|
|
|
|
pr_debug("Found rev %u PMU (capabilities 0x%08X)\n", cc->pmu.rev,
|
|
pmucap);
|
|
|
|
if (cc->pmu.rev == 1)
|
|
bcma_cc_mask32(cc, BCMA_CC_PMU_CTL,
|
|
~BCMA_CC_PMU_CTL_NOILPONW);
|
|
else
|
|
bcma_cc_set32(cc, BCMA_CC_PMU_CTL,
|
|
BCMA_CC_PMU_CTL_NOILPONW);
|
|
|
|
if (cc->core->id.id == 0x4329 && cc->core->id.rev == 2)
|
|
pr_err("Fix for 4329b0 bad LPOM state not implemented!\n");
|
|
|
|
bcma_pmu_pll_init(cc);
|
|
bcma_pmu_resources_init(cc);
|
|
bcma_pmu_swreg_init(cc);
|
|
bcma_pmu_workarounds(cc);
|
|
}
|