diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/si.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/si.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 719f03e061db..80979ed951eb 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -70,6 +70,33 @@ extern u32 evergreen_get_number_of_dram_channels(struct radeon_device *rdev); extern void evergreen_print_gpu_status_regs(struct radeon_device *rdev); extern bool evergreen_is_display_hung(struct radeon_device *rdev); +#define PCIE_BUS_CLK 10000 +#define TCLK (PCIE_BUS_CLK / 10) + +/** + * si_get_xclk - get the xclk + * + * @rdev: radeon_device pointer + * + * Returns the reference clock used by the gfx engine + * (SI). + */ +u32 si_get_xclk(struct radeon_device *rdev) +{ + u32 reference_clock = rdev->clock.spll.reference_freq; + u32 tmp; + + tmp = RREG32(CG_CLKPIN_CNTL_2); + if (tmp & MUX_TCLK_TO_XCLK) + return TCLK; + + tmp = RREG32(CG_CLKPIN_CNTL); + if (tmp & XTALIN_DIVIDE) + return reference_clock / 4; + + return reference_clock; +} + /* get temperature in millidegrees */ int si_get_temp(struct radeon_device *rdev) { @@ -4582,14 +4609,14 @@ void si_fini(struct radeon_device *rdev) } /** - * si_get_gpu_clock - return GPU clock counter snapshot + * si_get_gpu_clock_counter - return GPU clock counter snapshot * * @rdev: radeon_device pointer * * Fetches a GPU clock counter snapshot (SI). * Returns the 64 bit clock counter snapshot. */ -uint64_t si_get_gpu_clock(struct radeon_device *rdev) +uint64_t si_get_gpu_clock_counter(struct radeon_device *rdev) { uint64_t clock; |