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bcma: just do the necessary things in early register on SoCs

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Some parts of the initialization for chip common and the pcie core are
accessing the sprom struct, but it is not initialized at that stage.
Just do the necessary thing in the early register on SoCs and not the
complete initialization to read out the nvram from the flash chip.
After it is possible to read out the nvram, the sprom should be parsed
from it and the full initialization of the cores should be run.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hauke Mehrtens 2012-09-29 20:29:49 +02:00 committed by John W. Linville
parent b0a949b42b
commit 49655bb8a5
6 changed files with 51 additions and 17 deletions
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23
drivers/bcma/driver_chipcommon.c
View File

@ -22,6 +22,23 @@ static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
return value;
}
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
{
if (cc->early_setup_done)
return;
if (cc->core->id.rev >= 11)
cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
if (cc->core->id.rev >= 35)
cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);
if (cc->capabilities & BCMA_CC_CAP_PMU)
bcma_pmu_early_init(cc);
cc->early_setup_done = true;
}
void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
{
u32 leddc_on = 10;
@ -30,11 +47,7 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
if (cc->setup_done)
return;
if (cc->core->id.rev >= 11)
cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
if (cc->core->id.rev >= 35)
cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);
bcma_core_chipcommon_early_init(cc);
if (cc->core->id.rev >= 20) {
bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, 0);

5
drivers/bcma/driver_chipcommon_pmu.c
View File

@ -144,7 +144,7 @@ static void bcma_pmu_workarounds(struct bcma_drv_cc *cc)
}
}
void bcma_pmu_init(struct bcma_drv_cc *cc)
void bcma_pmu_early_init(struct bcma_drv_cc *cc)
{
u32 pmucap;
@ -153,7 +153,10 @@ void bcma_pmu_init(struct bcma_drv_cc *cc)
bcma_debug(cc->core->bus, "Found rev %u PMU (capabilities 0x%08X)\n",
cc->pmu.rev, pmucap);
}
void bcma_pmu_init(struct bcma_drv_cc *cc)
{
if (cc->pmu.rev == 1)
bcma_cc_mask32(cc, BCMA_CC_PMU_CTL,
~BCMA_CC_PMU_CTL_NOILPONW);

26
drivers/bcma/driver_mips.c
View File

@ -212,16 +212,33 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
}
}
void bcma_core_mips_early_init(struct bcma_drv_mips *mcore)
{
struct bcma_bus *bus = mcore->core->bus;
if (mcore->early_setup_done)
return;
bcma_chipco_serial_init(&bus->drv_cc);
bcma_core_mips_flash_detect(mcore);
mcore->early_setup_done = true;
}
void bcma_core_mips_init(struct bcma_drv_mips *mcore)
{
struct bcma_bus *bus;
struct bcma_device *core;
bus = mcore->core->bus;
if (mcore->setup_done)
return;
bcma_info(bus, "Initializing MIPS core...\n");
if (!mcore->setup_done)
mcore->assigned_irqs = 1;
bcma_core_mips_early_init(mcore);
mcore->assigned_irqs = 1;
/* Assign IRQs to all cores on the bus */
list_for_each_entry(core, &bus->cores, list) {
@ -256,10 +273,5 @@ void bcma_core_mips_init(struct bcma_drv_mips *mcore)
bcma_info(bus, "IRQ reconfiguration done\n");
bcma_core_mips_dump_irq(bus);
if (mcore->setup_done)
return;
bcma_chipco_serial_init(&bus->drv_cc);
bcma_core_mips_flash_detect(mcore);
mcore->setup_done = true;
}

8
drivers/bcma/main.c
View File

@ -274,18 +274,18 @@ int __init bcma_bus_early_register(struct bcma_bus *bus,
return -1;
}
/* Init CC core */
/* Early init CC core */
core = bcma_find_core(bus, bcma_cc_core_id(bus));
if (core) {
bus->drv_cc.core = core;
bcma_core_chipcommon_init(&bus->drv_cc);
bcma_core_chipcommon_early_init(&bus->drv_cc);
}
/* Init MIPS core */
/* Early init MIPS core */
core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
if (core) {
bus->drv_mips.core = core;
bcma_core_mips_init(&bus->drv_mips);
bcma_core_mips_early_init(&bus->drv_mips);
}
bcma_info(bus, "Early bus registered\n");

3
include/linux/bcma/bcma_driver_chipcommon.h
View File

@ -552,6 +552,7 @@ struct bcma_drv_cc {
u32 capabilities;
u32 capabilities_ext;
u8 setup_done:1;
u8 early_setup_done:1;
/* Fast Powerup Delay constant */
u16 fast_pwrup_delay;
struct bcma_chipcommon_pmu pmu;
@ -583,6 +584,7 @@ struct bcma_drv_cc {
bcma_cc_write32(cc, offset, (bcma_cc_read32(cc, offset) & (mask)) | (set))
extern void bcma_core_chipcommon_init(struct bcma_drv_cc *cc);
extern void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc);
extern void bcma_chipco_suspend(struct bcma_drv_cc *cc);
extern void bcma_chipco_resume(struct bcma_drv_cc *cc);
@ -606,6 +608,7 @@ u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value);
/* PMU support */
extern void bcma_pmu_init(struct bcma_drv_cc *cc);
extern void bcma_pmu_early_init(struct bcma_drv_cc *cc);
extern void bcma_chipco_pll_write(struct bcma_drv_cc *cc, u32 offset,
u32 value);

3
include/linux/bcma/bcma_driver_mips.h
View File

@ -35,13 +35,16 @@ struct bcma_device;
struct bcma_drv_mips {
struct bcma_device *core;
u8 setup_done:1;
u8 early_setup_done:1;
unsigned int assigned_irqs;
};
#ifdef CONFIG_BCMA_DRIVER_MIPS
extern void bcma_core_mips_init(struct bcma_drv_mips *mcore);
extern void bcma_core_mips_early_init(struct bcma_drv_mips *mcore);
#else
static inline void bcma_core_mips_init(struct bcma_drv_mips *mcore) { }
static inline void bcma_core_mips_early_init(struct bcma_drv_mips *mcore) { }
#endif
extern u32 bcma_cpu_clock(struct bcma_drv_mips *mcore);