diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_irq_kms.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_irq_kms.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 1b7528df7f7f..7aacb44df201 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -538,3 +538,38 @@ void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask) spin_unlock_irqrestore(&rdev->irq.lock, irqflags); } +/** + * radeon_irq_kms_update_int_n - helper for updating interrupt enable registers + * + * @rdev: radeon device pointer + * @reg: the register to write to enable/disable interrupts + * @mask: the mask that enables the interrupts + * @enable: whether to enable or disable the interrupt register + * @name: the name of the interrupt register to print to the kernel log + * @num: the number of the interrupt register to print to the kernel log + * + * Helper for updating the enable state of interrupt registers. Checks whether + * or not the interrupt matches the enable state we want. If it doesn't, then + * we update it and print a debugging message to the kernel log indicating the + * new state of the interrupt register. + * + * Used for updating sequences of interrupts registers like HPD1, HPD2, etc. + */ +void radeon_irq_kms_set_irq_n_enabled(struct radeon_device *rdev, + u32 reg, u32 mask, + bool enable, const char *name, unsigned n) +{ + u32 tmp = RREG32(reg); + + /* Interrupt state didn't change */ + if (!!(tmp & mask) == enable) + return; + + if (enable) { + DRM_DEBUG("%s%d interrupts enabled\n", name, n); + WREG32(reg, tmp |= mask); + } else { + DRM_DEBUG("%s%d interrupts disabled\n", name, n); + WREG32(reg, tmp & ~mask); + } +} |