C++ (Cpp) set_acpuclk_footprint示例

示例#1

void set_acpuclk_footprint_by_clk(struct clk* c, unsigned state)
{
	int cpu = clk_get_cpu_idx(c);

	
	if (cpu < 0)
		return;

	if (unlikely(cpu >= NR_CPUS)) {
		WARN(1, "Only %d cores, but try to set footprint for core %d\n", NR_CPUS, cpu);
		return;
	}

	
	set_acpuclk_footprint(cpu, state);
}

示例#2

文件： clock-generic.c 项目： mrjaydee82/SinLessKerne1-m8-GPE

static int mux_div_clk_set_rate(struct clk *c, unsigned long rate)
{
	struct mux_div_clk *md = to_mux_div_clk(c);
	unsigned long flags, rrate;
	unsigned long new_prate, old_prate;
	struct clk *old_parent, *new_parent;
	u32 new_div, old_div;
	int rc;

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_SAFE_PARENT_INIT);
#endif

	log_clk_call(c, FN_SET_RATE, rate);

	rc = safe_parent_init_once(c);
	if (rc)
		return rc;

	rrate = __mux_div_round_rate(c, rate, &new_parent, &new_div,
							&new_prate);
	if (rrate != rate)
		return -EINVAL;

	old_parent = c->parent;
	old_div = md->data.div;
	old_prate = clk_get_rate(c->parent);

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_SET_SAFE_RATE);
#endif

	
	if (md->safe_freq)
		rc = set_src_div(md, md->safe_parent, md->safe_div);

	else if (new_parent == old_parent && new_div >= old_div) {
		rc = set_src_div(md, old_parent, new_div);
	}
	if (rc) {
		WARN(rc, "error switching to safe_parent freq=%ld\n", md->safe_freq);
		return rc;
	}
#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_SET_PARENT_RATE);
#endif

	rc = clk_set_rate(new_parent, new_prate);
	if (rc) {
		pr_err("failed to set %s to %ld\n",
			new_parent->dbg_name, new_prate);
		goto err_set_rate;
	}

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_CLK_PREPARE);
#endif

	rc = __clk_pre_reparent(c, new_parent, &flags);
	if (rc)
		goto err_pre_reparent;

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_SET_RATE);
#endif

	
	rc = __set_src_div(md, new_parent, new_div);
	if (rc)
		goto err_set_src_div;

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	
	set_acpuclk_cpu_freq_footprint(FT_CUR_RATE, 0, rrate);
	set_acpuclk_footprint(0, ACPU_BEFORE_CLK_UNPREPARE);
#endif

	c->parent = new_parent;

	__clk_post_reparent(c, old_parent, &flags);

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_RETURN);
#endif

	return 0;

err_set_src_div:
	
	WARN(rc, "disabling %s\n", new_parent->dbg_name);
#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_ERR_CLK_UNPREPARE);
#endif

	
	__clk_post_reparent(c, new_parent, &flags);
err_pre_reparent:

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_ERR_SET_PARENT_RATE);
#endif

	WARN(rc, "%s: error changing parent (%s) rate to %ld\n",
		c->dbg_name, old_parent->dbg_name, old_prate);
	rc = clk_set_rate(old_parent, old_prate);
err_set_rate:

#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_ERR_SET_RATE);
#endif

	WARN(rc, "%s: error changing back to original div (%d) and parent (%s)\n",
		c->dbg_name, old_div, old_parent->dbg_name);
	rc = set_src_div(md, old_parent, old_div);
#if defined(CONFIG_HTC_DEBUG_FOOTPRINT) && defined(CONFIG_MSM_CORTEX_A7)
	set_acpuclk_footprint(0, ACPU_BEFORE_ERR_RETURN);
#endif

	return rc;
}