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bcma: support BCM53573 series of wireless SoCs

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BCM53573 seems to be the first series of Northstar family with wireless
on the chip. The base models are BCM53573-s (A0, A1) and there is also
BCM47189B0 which seems to be some small modification.

The only problem with these chipsets seems to be watchdog. It's totally
unavailable on 53573A0 / 53573A1 and preferable PMU watchdog is broken
on 53573B0 / 53573B1.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Rafał Miłecki 2016-07-25 20:33:56 +02:00 committed by Kalle Valo
parent 441756b6a6
commit 3f37ec79dd
2 changed files with 32 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/bcma/driver_chipcommon.c
View File

@ -36,12 +36,31 @@ u32 bcma_chipco_get_alp_clock(struct bcma_drv_cc *cc)
}
EXPORT_SYMBOL_GPL(bcma_chipco_get_alp_clock);
static bool bcma_core_cc_has_pmu_watchdog(struct bcma_drv_cc *cc)
{
struct bcma_bus *bus = cc->core->bus;
if (cc->capabilities & BCMA_CC_CAP_PMU) {
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53573) {
WARN(bus->chipinfo.rev <= 1, "No watchdog available\n");
/* 53573B0 and 53573B1 have bugged PMU watchdog. It can
* be enabled but timer can't be bumped. Use CC one
* instead.
*/
return false;
}
return true;
} else {
return false;
}
}
static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
{
struct bcma_bus *bus = cc->core->bus;
u32 nb;
if (cc->capabilities & BCMA_CC_CAP_PMU) {
if (bcma_core_cc_has_pmu_watchdog(cc)) {
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
nb = 32;
else if (cc->core->id.rev < 26)
@ -95,9 +114,16 @@ static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc)
int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc)
{
struct bcma_bus *bus = cc->core->bus;
struct bcm47xx_wdt wdt = {};
struct platform_device *pdev;
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53573 &&
bus->chipinfo.rev <= 1) {
pr_debug("No watchdog on 53573A0 / 53573A1\n");
return 0;
}
wdt.driver_data = cc;
wdt.timer_set = bcma_chipco_watchdog_timer_set_wdt;
wdt.timer_set_ms = bcma_chipco_watchdog_timer_set_ms_wdt;
@ -105,7 +131,7 @@ int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc)
bcma_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
cc->core->bus->num, &wdt,
bus->num, &wdt,
sizeof(wdt));
if (IS_ERR(pdev))
return PTR_ERR(pdev);
@ -217,7 +243,7 @@ u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
u32 maxt;
maxt = bcma_chipco_watchdog_get_max_timer(cc);
if (cc->capabilities & BCMA_CC_CAP_PMU) {
if (bcma_core_cc_has_pmu_watchdog(cc)) {
if (ticks == 1)
ticks = 2;
else if (ticks > maxt)

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

@ -205,6 +205,9 @@ struct bcma_host_ops {
#define BCMA_PKG_ID_BCM4709 0
#define BCMA_CHIP_ID_BCM47094 53030
#define BCMA_CHIP_ID_BCM53018 53018
#define BCMA_CHIP_ID_BCM53573 53573
#define BCMA_PKG_ID_BCM53573 0
#define BCMA_PKG_ID_BCM47189 1
/* Board types (on PCI usually equals to the subsystem dev id) */
/* BCM4313 */