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105 lines
3.3 KiB
Diff
105 lines
3.3 KiB
Diff
From 78921f39c6495203bbbf4207c442c2b59f8f11c0 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Mon, 25 Jul 2016 18:03:17 +0200
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Subject: [PATCH] bcma: support BCM53573 series of wireless SoCs
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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BCM53573 seems to be the first series of Northstar family with wireless
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on the chip. The base models are BCM53573-s (A0, A1) and there is also
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BCM47189B0 which seems to be some small modification.
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The only problem with these chipsets seems to be watchdog. It's totally
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unavailable on 53573A0 / 53573A1 and preferable PMU watchdog is broken
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on 53573B0 / 53573B1.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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---
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drivers/bcma/driver_chipcommon.c | 32 +++++++++++++++++++++++++++++---
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include/linux/bcma/bcma.h | 3 +++
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2 files changed, 32 insertions(+), 3 deletions(-)
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--- a/drivers/bcma/driver_chipcommon.c
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+++ b/drivers/bcma/driver_chipcommon.c
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@@ -36,12 +36,31 @@ u32 bcma_chipco_get_alp_clock(struct bcm
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}
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EXPORT_SYMBOL_GPL(bcma_chipco_get_alp_clock);
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+static bool bcma_core_cc_has_pmu_watchdog(struct bcma_drv_cc *cc)
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+{
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+ struct bcma_bus *bus = cc->core->bus;
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+
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+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
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+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53573) {
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+ WARN(bus->chipinfo.rev <= 1, "No watchdog available\n");
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+ /* 53573B0 and 53573B1 have bugged PMU watchdog. It can
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+ * be enabled but timer can't be bumped. Use CC one
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+ * instead.
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+ */
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+ return false;
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+ }
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+ return true;
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+ } else {
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+ return false;
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+ }
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+}
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+
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static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
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{
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struct bcma_bus *bus = cc->core->bus;
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u32 nb;
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- if (cc->capabilities & BCMA_CC_CAP_PMU) {
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+ if (bcma_core_cc_has_pmu_watchdog(cc)) {
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if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
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nb = 32;
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else if (cc->core->id.rev < 26)
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@@ -95,9 +114,16 @@ static int bcma_chipco_watchdog_ticks_pe
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int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc)
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{
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+ struct bcma_bus *bus = cc->core->bus;
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struct bcm47xx_wdt wdt = {};
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struct platform_device *pdev;
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+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53573 &&
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+ bus->chipinfo.rev <= 1) {
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+ pr_debug("No watchdog on 53573A0 / 53573A1\n");
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+ return 0;
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+ }
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+
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wdt.driver_data = cc;
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wdt.timer_set = bcma_chipco_watchdog_timer_set_wdt;
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wdt.timer_set_ms = bcma_chipco_watchdog_timer_set_ms_wdt;
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@@ -105,7 +131,7 @@ int bcma_chipco_watchdog_register(struct
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bcma_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
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pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
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- cc->core->bus->num, &wdt,
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+ bus->num, &wdt,
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sizeof(wdt));
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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@@ -217,7 +243,7 @@ u32 bcma_chipco_watchdog_timer_set(struc
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u32 maxt;
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maxt = bcma_chipco_watchdog_get_max_timer(cc);
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- if (cc->capabilities & BCMA_CC_CAP_PMU) {
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+ if (bcma_core_cc_has_pmu_watchdog(cc)) {
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if (ticks == 1)
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ticks = 2;
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else if (ticks > maxt)
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--- a/include/linux/bcma/bcma.h
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+++ b/include/linux/bcma/bcma.h
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@@ -203,6 +203,9 @@ struct bcma_host_ops {
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#define BCMA_PKG_ID_BCM4709 0
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#define BCMA_CHIP_ID_BCM47094 53030
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#define BCMA_CHIP_ID_BCM53018 53018
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+#define BCMA_CHIP_ID_BCM53573 53573
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+#define BCMA_PKG_ID_BCM53573 0
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+#define BCMA_PKG_ID_BCM47189 1
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/* Board types (on PCI usually equals to the subsystem dev id) */
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/* BCM4313 */
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