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Commit 2a3a44a5 authored by Mohammed Mirza Mandayappurath Manzoor's avatar Mohammed Mirza Mandayappurath Manzoor
Browse files

msm: kgsl: Add support for efuse based LM ISENSE slope calculation 



Slope value to calculate the sensor current for Limits Management feature
could be calculated and fused on devices. Pass this value to GMU firmware
to override the slope calculation during boot.

Change-Id: I9f9cf3cff90ed27bf52bf412291f9b2e9fc4139c
Signed-off-by: default avatarMohammed Mirza Mandayappurath Manzoor <mmandaya@codeaurora.org>
parent 9126e0f1

drivers/gpu/msm/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -2,11 +2,11 @@ 
config QCOM_KGSL

	tristate "Qualcomm Technologies, Inc. 3D Graphics driver"

	depends on ARCH_QCOM

	depends on QCOM_QFPROM

	select GENERIC_ALLOCATOR

	select FW_LOADER

	select PM_DEVFREQ

	select QCOM_SCM

	select NVMEM

	select DEVFREQ_GOV_SIMPLE_ONDEMAND

	select DEVFREQ_GOV_PERFORMANCE

	select DEVFREQ_GOV_QCOM_ADRENO_TZ

drivers/gpu/msm/adreno.c

+18 −1
Original line number Diff line number Diff line
@@ -1337,6 +1337,23 @@ static int adreno_read_speed_bin(struct platform_device *pdev, 
	return 0;

}



static int adreno_probe_efuse(struct platform_device *pdev,

					struct adreno_device *adreno_dev)

{

	int ret;



	ret = adreno_read_speed_bin(pdev, adreno_dev);

	if (ret)

		return ret;



	ret = nvmem_cell_read_u32(&pdev->dev, "isense_slope",

					&adreno_dev->lm_slope);

	if (ret && ret != -ENOENT)

		return ret;



	return 0;

}



static int adreno_probe(struct platform_device *pdev)

{

	const struct of_device_id *of_id;
@@ -1364,7 +1381,7 @@ static int adreno_probe(struct platform_device *pdev) 


	adreno_update_soc_hw_revision_quirks(adreno_dev, pdev);



	status = adreno_read_speed_bin(pdev, adreno_dev);

	status = adreno_probe_efuse(pdev, adreno_dev);

	if (status)

		return status;

drivers/gpu/msm/adreno.h

+2 −0
Original line number Diff line number Diff line
@@ -442,6 +442,7 @@ enum gpu_coresight_sources { 
 * @lm_limit: limiting value for LM

 * @lm_threshold_count: register value for counter for lm threshold breakin

 * @lm_threshold_cross: number of current peaks exceeding threshold

 * @lm_slope: Slope value in the fused register for LM

 * @ifpc_count: Number of times the GPU went into IFPC

 * @speed_bin: Indicate which power level set to use

 * @highest_bank_bit: Value of the highest bank bit
@@ -517,6 +518,7 @@ struct adreno_device { 
	uint32_t lm_limit;

	uint32_t lm_threshold_count;

	uint32_t lm_threshold_cross;

	u32 lm_slope;

	uint32_t ifpc_count;



	unsigned int speed_bin;

drivers/gpu/msm/kgsl_hfi.c

+26 −6
Original line number Diff line number Diff line
@@ -644,6 +644,29 @@ static int hfi_verify_fw_version(struct kgsl_device *device, 
	return 0;

}



static int hfi_send_lm_feature_ctrl(struct gmu_device *gmu,

		struct adreno_device *adreno_dev)

{

	struct hfi_set_value_cmd req = {

		.type = HFI_VALUE_LM_CS0,

		.subtype = 0,

		.data = adreno_dev->lm_slope,

	};

	struct kgsl_device *device = &adreno_dev->dev;

	int ret;



	if (!test_bit(ADRENO_LM_CTRL, &adreno_dev->pwrctrl_flag))

		return 0;



	ret = hfi_send_feature_ctrl(gmu, HFI_FEATURE_LM, 1,

			device->pwrctrl.throttle_mask);



	if (!ret)

		ret = hfi_send_req(gmu, H2F_MSG_SET_VALUE, &req);



	return ret;

}



static int hfi_send_acd_feature_ctrl(struct gmu_device *gmu,

		struct adreno_device *adreno_dev)

{
@@ -723,12 +746,9 @@ int hfi_start(struct kgsl_device *device, 
		if (result)

			return result;



		if (test_bit(ADRENO_LM_CTRL, &adreno_dev->pwrctrl_flag)) {

			result = hfi_send_feature_ctrl(gmu, HFI_FEATURE_LM, 1,

					device->pwrctrl.throttle_mask);

		result = hfi_send_lm_feature_ctrl(gmu, adreno_dev);

		if (result)

			return result;

		}



		result = hfi_send_core_fw_start(gmu);

		if (result)

drivers/gpu/msm/kgsl_hfi.h

+1 −0
Original line number Diff line number Diff line
@@ -96,6 +96,7 @@ struct hfi_queue_table; 
#define HFI_VALUE_LOG_EVENT_ON		112

#define HFI_VALUE_LOG_EVENT_OFF		113

#define HFI_VALUE_DCVS_OBJ		114

#define HFI_VALUE_LM_CS0		115



#define HFI_VALUE_GLOBAL_TOKEN		0xFFFFFFFF