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Commit 286d9cc6 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: add get_temperature() callbacks for CIK (v2) 



This added support for the on-chip thermal sensors on
CIK asics.

v2: fix register offset.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 12262906

drivers/gpu/drm/radeon/cik.c

+37 −0
Original line number Diff line number Diff line
@@ -69,6 +69,43 @@ static void cik_program_aspm(struct radeon_device *rdev); 
static void cik_init_pg(struct radeon_device *rdev);

static void cik_init_cg(struct radeon_device *rdev);



/* get temperature in millidegrees */

int ci_get_temp(struct radeon_device *rdev)

{

	u32 temp;

	int actual_temp = 0;



	temp = (RREG32_SMC(CG_MULT_THERMAL_STATUS) & CTF_TEMP_MASK) >>

		CTF_TEMP_SHIFT;



	if (temp & 0x200)

		actual_temp = 255;

	else

		actual_temp = temp & 0x1ff;



	actual_temp = actual_temp * 1000;



	return actual_temp;

}



/* get temperature in millidegrees */

int kv_get_temp(struct radeon_device *rdev)

{

	u32 temp;

	int actual_temp = 0;



	temp = RREG32_SMC(0xC0300E0C);



	if (temp)

		actual_temp = (temp / 8) - 49;

	else

		actual_temp = 0;



	actual_temp = actual_temp * 1000;



	return actual_temp;

}



/*

 * Indirect registers accessor

 */

drivers/gpu/drm/radeon/cikd.h

+8 −0
Original line number Diff line number Diff line
@@ -32,6 +32,14 @@ 
#define GENERAL_PWRMGT                                    0xC0200000

#       define GPU_COUNTER_CLK                            (1 << 15)



#define	CG_MULT_THERMAL_STATUS				0xC0300014

#define		ASIC_MAX_TEMP(x)			((x) << 0)

#define		ASIC_MAX_TEMP_MASK			0x000001ff

#define		ASIC_MAX_TEMP_SHIFT			0

#define		CTF_TEMP(x)				((x) << 9)

#define		CTF_TEMP_MASK				0x0003fe00

#define		CTF_TEMP_SHIFT				9



#define	MPLL_BYPASSCLK_SEL				0xC050019C

#	define MPLL_CLKOUT_SEL(x)			((x) << 8)

#	define MPLL_CLKOUT_SEL_MASK			0xFF00

drivers/gpu/drm/radeon/radeon_asic.c

+2 −0
Original line number Diff line number Diff line
@@ -2452,6 +2452,7 @@ static struct radeon_asic ci_asic = { 
		.set_pcie_lanes = NULL,

		.set_clock_gating = NULL,

		.set_uvd_clocks = &cik_set_uvd_clocks,

		.get_temperature = &ci_get_temp,

	},

	.pflip = {

		.pre_page_flip = &evergreen_pre_page_flip,
@@ -2607,6 +2608,7 @@ static struct radeon_asic kv_asic = { 
		.set_pcie_lanes = NULL,

		.set_clock_gating = NULL,

		.set_uvd_clocks = &cik_set_uvd_clocks,

		.get_temperature = &kv_get_temp,

	},

	.pflip = {

		.pre_page_flip = &evergreen_pre_page_flip,

drivers/gpu/drm/radeon/radeon_asic.h

+2 −0
Original line number Diff line number Diff line
@@ -747,5 +747,7 @@ u32 cik_compute_ring_get_wptr(struct radeon_device *rdev, 
			      struct radeon_ring *ring);

void cik_compute_ring_set_wptr(struct radeon_device *rdev,

			       struct radeon_ring *ring);

int ci_get_temp(struct radeon_device *rdev);

int kv_get_temp(struct radeon_device *rdev);



#endif

drivers/gpu/drm/radeon/radeon_pm.c

+2 −0
Original line number Diff line number Diff line
@@ -569,6 +569,8 @@ static int radeon_hwmon_init(struct radeon_device *rdev) 
	case THERMAL_TYPE_NI:

	case THERMAL_TYPE_SUMO:

	case THERMAL_TYPE_SI:

	case THERMAL_TYPE_CI:

	case THERMAL_TYPE_KV:

		if (rdev->asic->pm.get_temperature == NULL)

			return err;

		rdev->pm.int_hwmon_dev = hwmon_device_register(rdev->dev);