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Commit 32f02102 authored by George Shen's avatar George Shen
Browse files

msm: cvp: Add CVP clock frequency control 



Added debug node to control CVP clock frequency for profiling
and debugging purpose.

Change-Id: I0ee386fcc3590ec6b6fa246e289120da5da1abd0
Signed-off-by: default avatarGeorge Shen <sqiao@codeaurora.org>
parent 7159e284

drivers/media/platform/msm/cvp/cvp_hfi.c

+3 −0
Original line number Diff line number Diff line
@@ -1442,6 +1442,9 @@ static int __set_clocks(struct iris_hfi_device *device, u32 freq) 
	iris_hfi_for_each_clock(device, cl) {

		if (cl->has_scaling) {/* has_scaling */

			device->clk_freq = freq;

			if (msm_cvp_clock_voting)

				freq = msm_cvp_clock_voting;



			rc = clk_set_rate(cl->clk, freq);

			if (rc) {

				dprintk(CVP_ERR,

drivers/media/platform/msm/cvp/msm_cvp_debug.c

+65 −4
Original line number Diff line number Diff line
@@ -6,7 +6,8 @@ 
#define CREATE_TRACE_POINTS

#define MAX_SSR_STRING_LEN 10

#include "msm_cvp_debug.h"

#include "cvp_hfi_api.h"

#include "msm_cvp_common.h"

#include "cvp_core_hfi.h"



int msm_cvp_debug = CVP_ERR | CVP_WARN | CVP_FW;

EXPORT_SYMBOL(msm_cvp_debug);
@@ -190,8 +191,6 @@ struct dentry *msm_cvp_debugfs_init_drv(void) 
	__debugfs_create(u32, "debug_output", &msm_cvp_debug_out) &&

	__debugfs_create(bool, "disable_thermal_mitigation",

			&msm_cvp_thermal_mitigation_disabled) &&

	__debugfs_create(u32, "core_clock_voting",

			&msm_cvp_clock_voting) &&

	__debugfs_create(bool, "disable_cvp_syscache",

			&msm_cvp_syscache_disable);
@@ -209,6 +208,62 @@ struct dentry *msm_cvp_debugfs_init_drv(void) 
	return NULL;

}



static int _clk_rate_set(void *data, u64 val)

{

	struct msm_cvp_core *core;

	struct cvp_hfi_device *dev;

	struct allowed_clock_rates_table *tbl = NULL;

	unsigned int tbl_size, i;



	core = list_first_entry(&cvp_driver->cores, struct msm_cvp_core, list);

	dev = core->device;

	tbl = core->resources.allowed_clks_tbl;

	tbl_size = core->resources.allowed_clks_tbl_size;



	if (val == 0) {

		struct iris_hfi_device *hdev = dev->hfi_device_data;



		msm_cvp_clock_voting = 0;

		call_hfi_op(dev, scale_clocks, hdev, hdev->clk_freq);

		return 0;

	}



	for (i = 0; i < tbl_size; i++)

		if (val <= tbl[i].clock_rate)

			break;



	if (i == tbl_size)

		msm_cvp_clock_voting = tbl[tbl_size-1].clock_rate;

	else

		msm_cvp_clock_voting = tbl[i].clock_rate;



	dprintk(CVP_WARN, "Override cvp_clk_rate with %d\n",

			msm_cvp_clock_voting);



	call_hfi_op(dev, scale_clocks, dev->hfi_device_data,

		msm_cvp_clock_voting);



	return 0;

}



static int _clk_rate_get(void *data, u64 *val)

{

	struct msm_cvp_core *core;

	struct iris_hfi_device *hdev;



	core = list_first_entry(&cvp_driver->cores, struct msm_cvp_core, list);

	hdev = core->device->hfi_device_data;

	if (msm_cvp_clock_voting)

		*val = msm_cvp_clock_voting;

	else

		*val = hdev->clk_freq;



	return 0;

}



DEFINE_DEBUGFS_ATTRIBUTE(clk_rate_fops, _clk_rate_get, _clk_rate_set, "%llu\n");





struct dentry *msm_cvp_debugfs_init_core(struct msm_cvp_core *core,

		struct dentry *parent)

{
@@ -235,6 +290,12 @@ struct dentry *msm_cvp_debugfs_init_core(struct msm_cvp_core *core, 
		dprintk(CVP_ERR, "debugfs_create_file: fail\n");

		goto failed_create_dir;

	}

	if (!debugfs_create_file("clock_rate", 0644, dir,

			NULL, &clk_rate_fops)) {

		dprintk(CVP_ERR, "debugfs_create_file: clock_rate fail\n");

		goto failed_create_dir;

	}



failed_create_dir:

	return dir;

}
@@ -370,7 +431,7 @@ struct dentry *msm_cvp_debugfs_init_inst(struct msm_cvp_inst *inst, 
	info = debugfs_create_file("info", 0444, dir,

			idata, &inst_info_fops);

	if (!info) {

		dprintk(CVP_ERR, "debugfs_create_file: fail\n");

		dprintk(CVP_ERR, "debugfs_create_file: info fail\n");

		goto failed_create_file;

	}