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drm/radeon/kms/pm: add additional asic callbacks
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- pm_misc() - handles voltage, pcie lanes, and other non
clock related power mode settings.  Currently disabled.
Needs further debugging

- pm_prepare() - disables crtc mem requests right now.
All memory clients need to be disabled when changing
memory clocks.  This function can be expanded to include
disabling fb access as well.

- pm_finish() - enable active memory clients.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Alex Deucher authored and Dave Airlie committed May 18, 2010
1 parent 58e21df commit 49e02b7
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41 changes: 41 additions & 0 deletions drivers/gpu/drm/radeon/evergreen.c
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Expand Up @@ -39,6 +39,47 @@
static void evergreen_gpu_init(struct radeon_device *rdev);
void evergreen_fini(struct radeon_device *rdev);

void evergreen_pm_misc(struct radeon_device *rdev)
{

}

void evergreen_pm_prepare(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
struct drm_crtc *crtc;
struct radeon_crtc *radeon_crtc;
u32 tmp;

/* disable any active CRTCs */
list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
radeon_crtc = to_radeon_crtc(crtc);
if (radeon_crtc->enabled) {
tmp = RREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset);
tmp |= EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE;
WREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset, tmp);
}
}
}

void evergreen_pm_finish(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
struct drm_crtc *crtc;
struct radeon_crtc *radeon_crtc;
u32 tmp;

/* enable any active CRTCs */
list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
radeon_crtc = to_radeon_crtc(crtc);
if (radeon_crtc->enabled) {
tmp = RREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset);
tmp &= ~EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE;
WREG32(EVERGREEN_CRTC_CONTROL + radeon_crtc->crtc_offset, tmp);
}
}
}

bool evergreen_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
{
bool connected = false;
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1 change: 1 addition & 0 deletions drivers/gpu/drm/radeon/evergreen_reg.h
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Expand Up @@ -166,6 +166,7 @@
/* CRTC blocks at 0x6df0, 0x79f0, 0x105f0, 0x111f0, 0x11df0, 0x129f0 */
#define EVERGREEN_CRTC_CONTROL 0x6e70
# define EVERGREEN_CRTC_MASTER_EN (1 << 0)
# define EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE (1 << 24)
#define EVERGREEN_CRTC_STATUS 0x6e8c
#define EVERGREEN_CRTC_UPDATE_LOCK 0x6ed4

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142 changes: 142 additions & 0 deletions drivers/gpu/drm/radeon/r100.c
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Expand Up @@ -37,6 +37,7 @@
#include "rs100d.h"
#include "rv200d.h"
#include "rv250d.h"
#include "atom.h"

#include <linux/firmware.h>
#include <linux/platform_device.h>
Expand Down Expand Up @@ -200,6 +201,147 @@ void r100_set_power_state(struct radeon_device *rdev)
DRM_INFO("GUI not idle!!!\n");
}

void r100_pm_misc(struct radeon_device *rdev)
{
#if 0
int requested_index = rdev->pm.requested_power_state_index;
struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
u32 tmp, sclk_cntl, sclk_cntl2, sclk_more_cntl;

if ((voltage->type == VOLTAGE_GPIO) && (voltage->gpio.valid)) {
if (ps->misc & ATOM_PM_MISCINFO_VOLTAGE_DROP_SUPPORT) {
tmp = RREG32(voltage->gpio.reg);
if (voltage->active_high)
tmp |= voltage->gpio.mask;
else
tmp &= ~(voltage->gpio.mask);
WREG32(voltage->gpio.reg, tmp);
if (voltage->delay)
udelay(voltage->delay);
} else {
tmp = RREG32(voltage->gpio.reg);
if (voltage->active_high)
tmp &= ~voltage->gpio.mask;
else
tmp |= voltage->gpio.mask;
WREG32(voltage->gpio.reg, tmp);
if (voltage->delay)
udelay(voltage->delay);
}
}

sclk_cntl = RREG32_PLL(SCLK_CNTL);
sclk_cntl2 = RREG32_PLL(SCLK_CNTL2);
sclk_cntl2 &= ~REDUCED_SPEED_SCLK_SEL(3);
sclk_more_cntl = RREG32_PLL(SCLK_MORE_CNTL);
sclk_more_cntl &= ~VOLTAGE_DELAY_SEL(3);
if (ps->misc & ATOM_PM_MISCINFO_ASIC_REDUCED_SPEED_SCLK_EN) {
sclk_more_cntl |= REDUCED_SPEED_SCLK_EN;
if (ps->misc & ATOM_PM_MISCINFO_DYN_CLK_3D_IDLE)
sclk_cntl2 |= REDUCED_SPEED_SCLK_MODE;
else
sclk_cntl2 &= ~REDUCED_SPEED_SCLK_MODE;
if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_CLOCK_DIVIDER_BY_2)
sclk_cntl2 |= REDUCED_SPEED_SCLK_SEL(0);
else if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_CLOCK_DIVIDER_BY_4)
sclk_cntl2 |= REDUCED_SPEED_SCLK_SEL(2);
} else
sclk_more_cntl &= ~REDUCED_SPEED_SCLK_EN;

if (ps->misc & ATOM_PM_MISCINFO_ASIC_DYNAMIC_VOLTAGE_EN) {
sclk_more_cntl |= IO_CG_VOLTAGE_DROP;
if (voltage->delay) {
sclk_more_cntl |= VOLTAGE_DROP_SYNC;
switch (voltage->delay) {
case 33:
sclk_more_cntl |= VOLTAGE_DELAY_SEL(0);
break;
case 66:
sclk_more_cntl |= VOLTAGE_DELAY_SEL(1);
break;
case 99:
sclk_more_cntl |= VOLTAGE_DELAY_SEL(2);
break;
case 132:
sclk_more_cntl |= VOLTAGE_DELAY_SEL(3);
break;
}
} else
sclk_more_cntl &= ~VOLTAGE_DROP_SYNC;
} else
sclk_more_cntl &= ~IO_CG_VOLTAGE_DROP;

if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_HDP_BLOCK_EN)
sclk_cntl &= ~FORCE_HDP;
else
sclk_cntl |= FORCE_HDP;

WREG32_PLL(SCLK_CNTL, sclk_cntl);
WREG32_PLL(SCLK_CNTL2, sclk_cntl2);
WREG32_PLL(SCLK_MORE_CNTL, sclk_more_cntl);

/* set pcie lanes */
if ((rdev->flags & RADEON_IS_PCIE) &&
!(rdev->flags & RADEON_IS_IGP) &&
rdev->asic->set_pcie_lanes &&
(ps->pcie_lanes !=
rdev->pm.power_state[rdev->pm.current_power_state_index].pcie_lanes)) {
radeon_set_pcie_lanes(rdev,
ps->pcie_lanes);
DRM_INFO("Setting: p: %d\n", ps->pcie_lanes);
}
#endif
}

void r100_pm_prepare(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
struct drm_crtc *crtc;
struct radeon_crtc *radeon_crtc;
u32 tmp;

/* disable any active CRTCs */
list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
radeon_crtc = to_radeon_crtc(crtc);
if (radeon_crtc->enabled) {
if (radeon_crtc->crtc_id) {
tmp = RREG32(RADEON_CRTC2_GEN_CNTL);
tmp |= RADEON_CRTC2_DISP_REQ_EN_B;
WREG32(RADEON_CRTC2_GEN_CNTL, tmp);
} else {
tmp = RREG32(RADEON_CRTC_GEN_CNTL);
tmp |= RADEON_CRTC_DISP_REQ_EN_B;
WREG32(RADEON_CRTC_GEN_CNTL, tmp);
}
}
}
}

void r100_pm_finish(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
struct drm_crtc *crtc;
struct radeon_crtc *radeon_crtc;
u32 tmp;

/* enable any active CRTCs */
list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
radeon_crtc = to_radeon_crtc(crtc);
if (radeon_crtc->enabled) {
if (radeon_crtc->crtc_id) {
tmp = RREG32(RADEON_CRTC2_GEN_CNTL);
tmp &= ~RADEON_CRTC2_DISP_REQ_EN_B;
WREG32(RADEON_CRTC2_GEN_CNTL, tmp);
} else {
tmp = RREG32(RADEON_CRTC_GEN_CNTL);
tmp &= ~RADEON_CRTC_DISP_REQ_EN_B;
WREG32(RADEON_CRTC_GEN_CNTL, tmp);
}
}
}
}

bool r100_gui_idle(struct radeon_device *rdev)
{
if (RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_ACTIVE)
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36 changes: 36 additions & 0 deletions drivers/gpu/drm/radeon/r100d.h
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Expand Up @@ -838,5 +838,41 @@
#define G_00000D_FORCE_RB(x) (((x) >> 28) & 0x1)
#define C_00000D_FORCE_RB 0xEFFFFFFF

/* PLL regs */
#define SCLK_CNTL 0xd
#define FORCE_HDP (1 << 17)
#define CLK_PWRMGT_CNTL 0x14
#define GLOBAL_PMAN_EN (1 << 10)
#define DISP_PM (1 << 20)
#define PLL_PWRMGT_CNTL 0x15
#define MPLL_TURNOFF (1 << 0)
#define SPLL_TURNOFF (1 << 1)
#define PPLL_TURNOFF (1 << 2)
#define P2PLL_TURNOFF (1 << 3)
#define TVPLL_TURNOFF (1 << 4)
#define MOBILE_SU (1 << 16)
#define SU_SCLK_USE_BCLK (1 << 17)
#define SCLK_CNTL2 0x1e
#define REDUCED_SPEED_SCLK_MODE (1 << 16)
#define REDUCED_SPEED_SCLK_SEL(x) ((x) << 17)
#define MCLK_MISC 0x1f
#define EN_MCLK_TRISTATE_IN_SUSPEND (1 << 18)
#define SCLK_MORE_CNTL 0x35
#define REDUCED_SPEED_SCLK_EN (1 << 16)
#define IO_CG_VOLTAGE_DROP (1 << 17)
#define VOLTAGE_DELAY_SEL(x) ((x) << 20)
#define VOLTAGE_DROP_SYNC (1 << 19)

/* mmreg */
#define DISP_PWR_MAN 0xd08
#define DISP_D3_GRPH_RST (1 << 18)
#define DISP_D3_SUBPIC_RST (1 << 19)
#define DISP_D3_OV0_RST (1 << 20)
#define DISP_D1D2_GRPH_RST (1 << 21)
#define DISP_D1D2_SUBPIC_RST (1 << 22)
#define DISP_D1D2_OV0_RST (1 << 23)
#define DISP_DVO_ENABLE_RST (1 << 24)
#define TV_ENABLE_RST (1 << 25)
#define AUTO_PWRUP_EN (1 << 26)

#endif
1 change: 1 addition & 0 deletions drivers/gpu/drm/radeon/r500_reg.h
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Expand Up @@ -347,6 +347,7 @@

#define AVIVO_D1CRTC_CONTROL 0x6080
# define AVIVO_CRTC_EN (1 << 0)
# define AVIVO_CRTC_DISP_READ_REQUEST_DISABLE (1 << 24)
#define AVIVO_D1CRTC_BLANK_CONTROL 0x6084
#define AVIVO_D1CRTC_INTERLACE_CONTROL 0x6088
#define AVIVO_D1CRTC_INTERLACE_STATUS 0x608c
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5 changes: 5 additions & 0 deletions drivers/gpu/drm/radeon/r600.c
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Expand Up @@ -304,6 +304,11 @@ void r600_set_power_state(struct radeon_device *rdev)
DRM_INFO("GUI not idle!!!\n");
}

void r600_pm_misc(struct radeon_device *rdev)
{

}

bool r600_gui_idle(struct radeon_device *rdev)
{
if (RREG32(GRBM_STATUS) & GUI_ACTIVE)
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3 changes: 3 additions & 0 deletions drivers/gpu/drm/radeon/radeon.h
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Expand Up @@ -815,6 +815,9 @@ struct radeon_asic {
bool (*gui_idle)(struct radeon_device *rdev);
void (*get_power_state)(struct radeon_device *rdev, enum radeon_pm_action action);
void (*set_power_state)(struct radeon_device *rdev);
void (*pm_misc)(struct radeon_device *rdev);
void (*pm_prepare)(struct radeon_device *rdev);
void (*pm_finish)(struct radeon_device *rdev);
};

/*
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