C++ (Cpp) tegra_emc_get_dram_type Examples

Example #1

File: tegra_emc_timers.c Project: Toradex-Apalis-TK1-AndroidTV/android_kernel_nvidia_mm

int tegra_emc_timers_init(struct dentry *parent)
{
#ifdef CONFIG_DEBUG_FS
	struct dentry *dram_therm_debugfs;
	struct dentry *training_debugfs;

	/*
	 * If caller doesn't want us to make a debugfs dir it can pass NULL.
	 * This should never be a top level debugfs dir. For subsequent debugfs
	 * errors return 0 - don't fail the entire EMC driver init if debugfs
	 * has problems. We do a best effort here.
	 */
	if (!parent)
		return 0;

	emc_timers_debugfs = debugfs_create_dir("emc_timers", parent);
	if (!emc_timers_debugfs)
		return 0;

	dram_therm_debugfs = debugfs_create_dir("dram_therm",
						emc_timers_debugfs);
	if (!dram_therm_debugfs)
		return 0;

	debugfs_create_u32("debug", S_IRUGO | S_IWUSR,
			   emc_timers_debugfs, &emc_timers_dbg);

	/* DRAM thermals. */
	debugfs_create_u32("timer_period", S_IRUGO | S_IWUSR,
			   dram_therm_debugfs, &timer_period_mr4);
	debugfs_create_u32("test_mode", S_IRUGO | S_IWUSR,
			   dram_therm_debugfs, &test_mode);
	debugfs_create_u32("dram_temp_override", S_IRUGO | S_IWUSR,
			   dram_therm_debugfs, &dram_temp_override);
	debugfs_create_file("force_poll", S_IRUGO | S_IWUSR,
			    dram_therm_debugfs, NULL, &mr4_force_poll_fops);

	if (tegra_emc_get_dram_type() == DRAM_TYPE_LPDDR4) {
		/* Training. */
		training_debugfs = debugfs_create_dir("training",
						      emc_timers_debugfs);
		if (!training_debugfs)
			return 0;

		debugfs_create_u32("timer_period", S_IRUGO | S_IWUSR,
				   training_debugfs, &timer_period_training);
	}
#endif
	return 0;
}

Example #2

File: tegra3_dvfs.c Project: jareddantis/pulsar-kernel_enrc2b

int tegra_dvfs_rail_post_enable(struct dvfs_rail *rail)
{
	if (tegra_emc_get_dram_type() != DRAM_TYPE_DDR3)
		return 0;

	if (((&tegra3_dvfs_rail_vdd_core == rail) &&
	     (rail->nominal_millivolts > TEGRA_EMC_BRIDGE_MVOLTS_MIN)) ||
	    ((&tegra3_dvfs_rail_vdd_cpu == rail) &&
	     (tegra3_get_core_floor_mv(rail->nominal_millivolts) >
	      TEGRA_EMC_BRIDGE_MVOLTS_MIN))) {
		struct clk *bridge = tegra_get_clock_by_name("bridge.emc");
		BUG_ON(!bridge);

		clk_disable(bridge);
		pr_info("%s: %s: disabled bridge.emc\n",
			__func__, rail->reg_id);
	}
	return 0;
}