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bcma: support PMU present as separated bus core

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On recent Broadcom chipsets PMU is present as separated core and it
can't be accessed using ChipCommon anymore as it fails with e.g.:
[    0.000577] Unhandled fault: external abort on non-linefetch (0x1008) at 0xf1000604

Solve it by using a new (PMU) core pointer set to ChipCommon or PMU
depending on the hardware capabilities.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Rafał Miłecki 2016-01-19 08:45:26 +01:00 • committed by Kalle Valo
parent 67edf354fa
commit b3c47afbf5
3 changed files with 72 additions and 43 deletions
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19
include/linux/bcma/bcma_driver_chipcommon.h
View file

@ -217,6 +217,11 @@
#define BCMA_CC_CLKDIV_JTAG_SHIFT 8
#define BCMA_CC_CLKDIV_UART 0x000000FF
#define BCMA_CC_CAP_EXT 0x00AC /* Capabilities */
#define BCMA_CC_CAP_EXT_SECI_PRESENT 0x00000001
#define BCMA_CC_CAP_EXT_GSIO_PRESENT 0x00000002
#define BCMA_CC_CAP_EXT_GCI_PRESENT 0x00000004
#define BCMA_CC_CAP_EXT_SECI_PUART_PRESENT 0x00000008 /* UART present */
#define BCMA_CC_CAP_EXT_AOB_PRESENT 0x00000040
#define BCMA_CC_PLLONDELAY 0x00B0 /* Rev >= 4 only */
#define BCMA_CC_FREFSELDELAY 0x00B4 /* Rev >= 4 only */
#define BCMA_CC_SLOWCLKCTL 0x00B8 /* 6 <= Rev <= 9 only */
@ -566,6 +571,7 @@
* Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU)
*/
struct bcma_chipcommon_pmu {
struct bcma_device *core; /* Can be separated core or just ChipCommon one */
u8 rev; /* PMU revision */
u32 crystalfreq; /* The active crystal frequency (in kHz) */
};
@ -660,6 +666,19 @@ struct bcma_drv_cc_b {
#define bcma_cc_maskset32(cc, offset, mask, set) \
bcma_cc_write32(cc, offset, (bcma_cc_read32(cc, offset) & (mask)) | (set))
/* PMU registers access */
#define bcma_pmu_read32(cc, offset) \
bcma_read32((cc)->pmu.core, offset)
#define bcma_pmu_write32(cc, offset, val) \
bcma_write32((cc)->pmu.core, offset, val)
#define bcma_pmu_mask32(cc, offset, mask) \
bcma_pmu_write32(cc, offset, bcma_pmu_read32(cc, offset) & (mask))
#define bcma_pmu_set32(cc, offset, set) \
bcma_pmu_write32(cc, offset, bcma_pmu_read32(cc, offset) | (set))
#define bcma_pmu_maskset32(cc, offset, mask, set) \
bcma_pmu_write32(cc, offset, (bcma_pmu_read32(cc, offset) & (mask)) | (set))
extern u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks);
extern u32 bcma_chipco_get_alp_clock(struct bcma_drv_cc *cc);