Commit 9d67006e authored by Alex Deucher's avatar Alex Deucher
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drm/radeon/kms: add dpm support for rs780/rs880 



This adds dpm support for rs780/rs880 asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic voltage scaling

set radeon.dpm=1 to enable it.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2e9d4c05

drivers/gpu/drm/radeon/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -77,7 +77,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \ 
	evergreen_hdmi.o radeon_trace_points.o ni.o cayman_blit_shaders.o \

	atombios_encoders.o radeon_semaphore.o radeon_sa.o atombios_i2c.o si.o \

	si_blit_shaders.o radeon_prime.o radeon_uvd.o cik.o cik_blit_shaders.o \

	r600_dpm.o

	r600_dpm.o rs780_dpm.o



radeon-$(CONFIG_COMPAT) += radeon_ioc32.o

radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o

drivers/gpu/drm/radeon/radeon_asic.c

+12 −0
Original line number Diff line number Diff line
@@ -1242,6 +1242,18 @@ static struct radeon_asic rs780_asic = { 
		.set_clock_gating = NULL,

		.get_temperature = &rv6xx_get_temp,

	},

	.dpm = {

		.init = &rs780_dpm_init,

		.setup_asic = &rs780_dpm_setup_asic,

		.enable = &rs780_dpm_enable,

		.disable = &rs780_dpm_disable,

		.set_power_state = &rs780_dpm_set_power_state,

		.display_configuration_changed = &rs780_dpm_display_configuration_changed,

		.fini = &rs780_dpm_fini,

		.get_sclk = &rs780_dpm_get_sclk,

		.get_mclk = &rs780_dpm_get_mclk,

		.print_power_state = &rs780_dpm_print_power_state,

	},

	.pflip = {

		.pre_page_flip = &rs600_pre_page_flip,

		.page_flip = &rs600_page_flip,

drivers/gpu/drm/radeon/radeon_asic.h

+12 −0
Original line number Diff line number Diff line
@@ -402,6 +402,18 @@ int r600_mc_wait_for_idle(struct radeon_device *rdev); 
u32 r600_get_xclk(struct radeon_device *rdev);

uint64_t r600_get_gpu_clock_counter(struct radeon_device *rdev);

int rv6xx_get_temp(struct radeon_device *rdev);

/* rs780 dpm */

int rs780_dpm_init(struct radeon_device *rdev);

int rs780_dpm_enable(struct radeon_device *rdev);

void rs780_dpm_disable(struct radeon_device *rdev);

int rs780_dpm_set_power_state(struct radeon_device *rdev);

void rs780_dpm_setup_asic(struct radeon_device *rdev);

void rs780_dpm_display_configuration_changed(struct radeon_device *rdev);

void rs780_dpm_fini(struct radeon_device *rdev);

u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low);

u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low);

void rs780_dpm_print_power_state(struct radeon_device *rdev,

				 struct radeon_ps *ps);



/* uvd */

int r600_uvd_init(struct radeon_device *rdev);

drivers/gpu/drm/radeon/radeon_pm.c

+7 −0
Original line number Diff line number Diff line
@@ -1030,6 +1030,13 @@ int radeon_pm_init(struct radeon_device *rdev) 
{

	/* enable dpm on rv6xx+ */

	switch (rdev->family) {

	case CHIP_RS780:

	case CHIP_RS880:

		if (radeon_dpm == 1)

			rdev->pm.pm_method = PM_METHOD_DPM;

		else

			rdev->pm.pm_method = PM_METHOD_PROFILE;

		break;

	default:

		/* default to profile method */

		rdev->pm.pm_method = PM_METHOD_PROFILE;

drivers/gpu/drm/radeon/rs780_dpm.c

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