/* Caller must hold the device mutex. */
int kgsl_pwrctrl_sleep(struct kgsl_device *device)
{
	int status = 0;
	KGSL_PWR_INFO(device, "sleep device %d\n", device->id);

	/* Work through the legal state transitions */
	switch (device->requested_state) {
	case KGSL_STATE_NAP:
		if (device->pwrctrl.restore_slumber) {
			kgsl_pwrctrl_request_state(device, KGSL_STATE_NONE);
			break;
		}
		status = _nap(device);
		break;
	case KGSL_STATE_SLEEP:
		if (device->pwrctrl.restore_slumber)
			status = _slumber(device);
		else
			status = _sleep(device);
		break;
	case KGSL_STATE_SLUMBER:
		status = _slumber(device);
		break;
	default:
		KGSL_PWR_INFO(device, "bad state request 0x%x\n",
				device->requested_state);
		kgsl_pwrctrl_request_state(device, KGSL_STATE_NONE);
		status = -EINVAL;
		break;
	}
	return status;
}
void kgsl_pwrctrl_axi(struct kgsl_device *device, int state)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	if (state == KGSL_PWRFLAGS_OFF) {
		if (test_and_clear_bit(KGSL_PWRFLAGS_AXI_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"axi off, device %d\n", device->id);
			if (pwr->ebi1_clk) {
				clk_set_rate(pwr->ebi1_clk, 0);
				clk_disable(pwr->ebi1_clk);
			}
			if (pwr->pcl)
				msm_bus_scale_client_update_request(pwr->pcl,
								    0);
		}
	} else if (state == KGSL_PWRFLAGS_ON) {
		if (!test_and_set_bit(KGSL_PWRFLAGS_AXI_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"axi on, device %d\n", device->id);
			if (pwr->ebi1_clk) {
				clk_enable(pwr->ebi1_clk);
				clk_set_rate(pwr->ebi1_clk,
					pwr->pwrlevels[pwr->active_pwrlevel].
					bus_freq);
			}
			if (pwr->pcl)
				msm_bus_scale_client_update_request(pwr->pcl,
					pwr->pwrlevels[pwr->active_pwrlevel].
						bus_freq);
		}
	}
}
Example #3
0
void kgsl_pwrctrl_axi(struct kgsl_device *device, int state)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	if (state == KGSL_PWRFLAGS_OFF) {
		if (test_and_clear_bit(KGSL_PWRFLAGS_AXI_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"axi off, device %d\n", device->id);
			if (pwr->ebi1_clk) {
				clk_set_rate(pwr->ebi1_clk, 0);
				clk_disable(pwr->ebi1_clk);
			}
			pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ,
				"kgsl_3d", PM_QOS_DEFAULT_VALUE);
		}
	} else if (state == KGSL_PWRFLAGS_ON) {
		if (!test_and_set_bit(KGSL_PWRFLAGS_AXI_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"axi on, device %d\n", device->id);
			pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ,
				"kgsl_3d", pwr->pwrlevels[pwr->active_pwrlevel].
				bus_freq/1000);
			if (pwr->ebi1_clk) {
				clk_enable(pwr->ebi1_clk);
				clk_set_rate(pwr->ebi1_clk,
					pwr->pwrlevels[pwr->active_pwrlevel].
					bus_freq);
			}
		}
	}
}
void kgsl_pwrctrl_pwrrail(struct kgsl_device *device, int state)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	if (state == KGSL_PWRFLAGS_OFF) {
		if (test_and_clear_bit(KGSL_PWRFLAGS_POWER_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"power off, device %d\n", device->id);
			if (internal_pwr_rail_ctl(pwr->pwr_rail, false)) {
				KGSL_DRV_ERR(device,
					"call internal_pwr_rail_ctl failed\n");
				return;
			}
			if (pwr->gpu_reg)
				regulator_disable(pwr->gpu_reg);
		}
	} else if (state == KGSL_PWRFLAGS_ON) {
		if (!test_and_set_bit(KGSL_PWRFLAGS_POWER_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"power on, device %d\n", device->id);
			if (internal_pwr_rail_ctl(pwr->pwr_rail, true)) {
				KGSL_PWR_ERR(device,
					"call internal_pwr_rail_ctl failed\n");
				return;
			}
			if (pwr->gpu_reg)
				regulator_enable(pwr->gpu_reg);
		}
	}
}
void kgsl_pwrctrl_irq(struct kgsl_device *device, int state)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	if (state == KGSL_PWRFLAGS_ON) {
		if (!test_and_set_bit(KGSL_PWRFLAGS_IRQ_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"irq on, device %d\n", device->id);
			enable_irq(pwr->interrupt_num);
			device->ftbl->irqctrl(device, 1);
		}
	} else if (state == KGSL_PWRFLAGS_OFF) {
		if (test_and_clear_bit(KGSL_PWRFLAGS_IRQ_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"irq off, device %d\n", device->id);
			device->ftbl->irqctrl(device, 0);
			if (in_interrupt())
				disable_irq_nosync(pwr->interrupt_num);
			else
				disable_irq(pwr->interrupt_num);
		}
	}
}
/* Caller must hold the device mutex. */
void kgsl_pwrctrl_wake(struct kgsl_device *device)
{
	if (device->state == KGSL_STATE_SUSPEND)
		return;

	if (device->state != KGSL_STATE_NAP) {
		kgsl_pwrctrl_axi(device, KGSL_PWRFLAGS_ON);
		kgsl_pwrscale_wake(device);
	}

	/* Turn on the core clocks */
	kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_ON);

	/* Enable state before turning on irq */
	device->state = KGSL_STATE_ACTIVE;
	KGSL_PWR_WARN(device, "state -> ACTIVE, device %d\n", device->id);
	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_ON);

	/* Re-enable HW access */
	mod_timer(&device->idle_timer,
				jiffies + device->pwrctrl.interval_timeout);

	wake_lock(&device->idle_wakelock);
	pm_qos_update_request(&device->pm_qos_req_dma, GPU_SWFI_LATENCY);
	KGSL_PWR_INFO(device, "wake return for device %d\n", device->id);
}
void kgsl_timer(unsigned long data)
{
	struct kgsl_device *device = (struct kgsl_device *) data;

	KGSL_PWR_INFO(device, "idle timer expired device %d\n", device->id);
	if (device->requested_state != KGSL_STATE_SUSPEND) {
		device->requested_state = KGSL_STATE_SLEEP;
		/* Have work run in a non-interrupt context. */
		queue_work(device->work_queue, &device->idle_check_ws);
	}
}
Example #8
0
void kgsl_pwrctrl_clk(struct kgsl_device *device, int state,
					  int requested_state)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;
	int i = 0;
	if (state == KGSL_PWRFLAGS_OFF) {
		if (test_and_clear_bit(KGSL_PWRFLAGS_CLK_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"clocks off, device %d\n", device->id);
			for (i = KGSL_MAX_CLKS - 1; i > 0; i--)
				if (pwr->grp_clks[i])
					clk_disable(pwr->grp_clks[i]);
			if ((pwr->pwrlevels[0].gpu_freq > 0) &&
				(requested_state != KGSL_STATE_NAP))
				clk_set_rate(pwr->grp_clks[0],
					pwr->pwrlevels[pwr->num_pwrlevels - 1].
					gpu_freq);
			kgsl_pwrctrl_busy_time(device, true);
		}
	} else if (state == KGSL_PWRFLAGS_ON) {
		if (!test_and_set_bit(KGSL_PWRFLAGS_CLK_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"clocks on, device %d\n", device->id);

			if ((pwr->pwrlevels[0].gpu_freq > 0) &&
				(device->state != KGSL_STATE_NAP))
				clk_set_rate(pwr->grp_clks[0],
					pwr->pwrlevels[pwr->active_pwrlevel].
						gpu_freq);

			/* as last step, enable grp_clk
			   this is to let GPU interrupt to come */
			for (i = KGSL_MAX_CLKS - 1; i > 0; i--)
				if (pwr->grp_clks[i])
					clk_enable(pwr->grp_clks[i]);
			kgsl_pwrctrl_busy_time(device, false);
		}
	}
}
void kgsl_pwrctrl_pwrrail(struct kgsl_device *device, int state)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	if (state == KGSL_PWRFLAGS_OFF) {
		if (test_and_clear_bit(KGSL_PWRFLAGS_POWER_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"power off, device %d\n", device->id);
			if (pwr->gpu_reg)
				regulator_disable(pwr->gpu_reg);
		}
	} else if (state == KGSL_PWRFLAGS_ON) {
		if (!test_and_set_bit(KGSL_PWRFLAGS_POWER_ON,
			&pwr->power_flags)) {
			KGSL_PWR_INFO(device,
				"power on, device %d\n", device->id);
			if (pwr->gpu_reg)
				regulator_enable(pwr->gpu_reg);
		}
	}
}
Example #10
0
void kgsl_timer(unsigned long data)
{
	struct kgsl_device *device = (struct kgsl_device *) data;

	KGSL_PWR_INFO(device, "idle timer expired device %d\n", device->id);
	if (device->requested_state != KGSL_STATE_SUSPEND) {
		if (device->pwrctrl.restore_slumber)
			kgsl_pwrctrl_request_state(device, KGSL_STATE_SLUMBER);
		else
			kgsl_pwrctrl_request_state(device, KGSL_STATE_SLEEP);
		/* Have work run in a non-interrupt context. */
		queue_work(device->work_queue, &device->idle_check_ws);
	}
}
/* Caller must hold the device mutex. */
int kgsl_pwrctrl_sleep(struct kgsl_device *device)
{
	//struct kgsl_pwrctrl *pwr = &device->pwrctrl;
	KGSL_PWR_INFO(device, "sleep device %d\n", device->id);

	/* Work through the legal state transitions */
	if (device->requested_state == KGSL_STATE_NAP) {
		if (device->ftbl->isidle(device))
			goto nap;
	} else if (device->requested_state == KGSL_STATE_SLEEP) {
		if (device->state == KGSL_STATE_NAP ||
			device->ftbl->isidle(device))
			goto sleep;
	}

	device->requested_state = KGSL_STATE_NONE;
	return -EBUSY;

sleep:
	device->ftbl->suspend_context(device);
	device->ftbl->stop(device);
	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF);
	kgsl_pwrctrl_axi(device, KGSL_PWRFLAGS_OFF);
#if 0
	if (pwr->pwrlevels[0].gpu_freq > 0)
		clk_set_rate(pwr->grp_clks[0],
				pwr->pwrlevels[pwr->num_pwrlevels - 1].
				gpu_freq);
#endif
	device->pwrctrl.time = 0;

	kgsl_pwrscale_sleep(device);
	goto clk_off;

nap:
	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF);
clk_off:
	//kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_OFF);

	device->state = device->requested_state;
	device->requested_state = KGSL_STATE_NONE;
	wake_unlock(&device->idle_wakelock);
	pm_qos_update_request(&device->pm_qos_req_dma,
				PM_QOS_DEFAULT_VALUE);
	KGSL_PWR_WARN(device, "state -> NAP/SLEEP(%d), device %d\n",
				  device->state, device->id);

	return 0;
}
/* Caller must hold the device mutex. */
int kgsl_pwrctrl_sleep(struct kgsl_device *device)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;
	KGSL_PWR_INFO(device, "sleep device %d\n", device->id);

	/* Work through the legal state transitions */
	if (device->requested_state == KGSL_STATE_NAP) {
		if (device->ftbl->isidle(device))
			goto nap;
	} else if (device->requested_state == KGSL_STATE_SLEEP) {
		if (device->state == KGSL_STATE_NAP ||
			device->ftbl->isidle(device))
			goto sleep;
	}

	device->requested_state = KGSL_STATE_NONE;
	return -EBUSY;

sleep:
	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF);
	kgsl_pwrctrl_axi(device, KGSL_PWRFLAGS_OFF);
	if (pwr->pwrlevels[0].gpu_freq > 0)
		clk_set_rate(pwr->grp_clks[0],
				pwr->pwrlevels[pwr->num_pwrlevels - 1].
				gpu_freq);
	kgsl_pwrctrl_busy_time(device, false);
	pwr->busy.start.tv_sec = 0;
	device->pwrctrl.time = 0;

	kgsl_pwrscale_sleep(device);
	goto clk_off;

nap:
	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF);
clk_off:
	kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_OFF);

	device->state = device->requested_state;
	device->requested_state = KGSL_STATE_NONE;
	wake_unlock(&device->idle_wakelock);
//	pm_qos_update_request(PM_QOS_CPU_DMA_LATENCY,
//				PM_QOS_DEFAULT_VALUE);
	KGSL_PWR_WARN(device, "state -> NAP/SLEEP(%d), device %d\n",
				  device->state, device->id);

	return 0;
}
void kgsl_pwrctrl_close(struct kgsl_device *device)
{
	struct kgsl_pwrctrl *pwr = &device->pwrctrl;
	int i;

	KGSL_PWR_INFO(device, "close device %d\n", device->id);

	unregister_early_suspend(&device->display_off);

	if (pwr->interrupt_num > 0) {
		if (pwr->have_irq) {
			free_irq(pwr->interrupt_num, NULL);
			pwr->have_irq = 0;
		}
		pwr->interrupt_num = 0;
	}

	clk_put(pwr->ebi1_clk);

	if (pwr->pcl)
		msm_bus_scale_unregister_client(pwr->pcl);

	pwr->pcl = 0;

	if (pwr->gpu_reg) {
		regulator_put(pwr->gpu_reg);
		pwr->gpu_reg = NULL;
	}

	for (i = 1; i < KGSL_MAX_CLKS; i++)
		if (pwr->grp_clks[i]) {
			clk_put(pwr->grp_clks[i]);
			pwr->grp_clks[i] = NULL;
		}

	pwr->grp_clks[0] = NULL;
	pwr->power_flags = 0;
}
/* Caller must hold the device mutex. */
void kgsl_pwrctrl_wake(struct kgsl_device *device)
{
	int status;
	struct adreno_device *adreno_dev = ADRENO_DEVICE(device);
	if (device->state == KGSL_STATE_SUSPEND)
		return;

	if (device->state == KGSL_STATE_SLEEP) {
		device->requested_state = KGSL_STATE_ACTIVE;
		status = device->ftbl->start(device, 0);
		if (status != 0) {
			KGSL_DRV_ERR(device, "start failed %d\n", status);
			return;
		}
	}
	
	if (device->state != KGSL_STATE_NAP) {
		kgsl_pwrctrl_axi(device, KGSL_PWRFLAGS_ON);
		kgsl_pwrscale_wake(device);
	}

	/* Turn on the core clocks */
	kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_ON);

	/* Enable state before turning on irq */
	device->state = KGSL_STATE_ACTIVE;
	KGSL_PWR_WARN(device, "state -> ACTIVE, device %d ts 0x%x\n", device->id, adreno_dev->ringbuffer.timestamp);
	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_ON);

	/* Re-enable HW access */
	mod_timer(&device->idle_timer,
				jiffies + device->pwrctrl.interval_timeout);

	wake_lock(&device->idle_wakelock);
	pm_qos_update_request(&device->pm_qos_req_dma, GPU_SWFI_LATENCY);
	KGSL_PWR_INFO(device, "wake return for device %d\n", device->id);
}
Example #15
0
void kgsl_pwrctrl_request_state(struct kgsl_device *device, unsigned int state)
{
	if (state != KGSL_STATE_NONE && state != device->requested_state)
		KGSL_PWR_INFO(device, "%x\n", state);
	device->requested_state = state;
}