Merge "mmc: core: Use freq table with devfreq" (3c1d860d) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/mmc/core/core.c

+21 −3

Original line number	Diff line number	Diff line
		@@ -543,6 +543,7 @@ static int mmc_devfreq_create_freq_table(struct mmc_host *host)
		int mmc_init_clk_scaling(struct mmc_host *host)
		{
		int err;
		struct devfreq *devfreq;

		if (!host \|\| !host->card) {
		pr_err("%s: unexpected host/card parameters\n",
		@@ -593,22 +594,34 @@ int mmc_init_clk_scaling(struct mmc_host *host)
		return err;
		}

		dev_pm_opp_add(mmc_classdev(host),
		host->clk_scaling.devfreq_profile.freq_table[0], 0);
		dev_pm_opp_add(mmc_classdev(host),
		host->clk_scaling.devfreq_profile.freq_table[1], 0);

		pr_debug("%s: adding devfreq with: upthreshold=%u downthreshold=%u polling=%u\n",
		mmc_hostname(host),
		host->clk_scaling.ondemand_gov_data.upthreshold,
		host->clk_scaling.ondemand_gov_data.downdifferential,
		host->clk_scaling.devfreq_profile.polling_ms);
		host->clk_scaling.devfreq = devfreq_add_device(

		devfreq = devfreq_add_device(
		mmc_classdev(host),
		&host->clk_scaling.devfreq_profile,
		"simple_ondemand",
		&host->clk_scaling.ondemand_gov_data);
		if (!host->clk_scaling.devfreq) {

		if (IS_ERR(devfreq)) {
		pr_err("%s: unable to register with devfreq\n",
		mmc_hostname(host));
		return -EPERM;
		dev_pm_opp_remove(mmc_classdev(host),
		host->clk_scaling.devfreq_profile.freq_table[0]);
		dev_pm_opp_remove(mmc_classdev(host),
		host->clk_scaling.devfreq_profile.freq_table[1]);
		return PTR_ERR(devfreq);
		}

		host->clk_scaling.devfreq = devfreq;
		pr_debug("%s: clk scaling is enabled for device %s (%pK) with devfreq %pK (clock = %uHz)\n",
		mmc_hostname(host),
		dev_name(mmc_classdev(host)),
		@@ -765,6 +778,11 @@ int mmc_exit_clk_scaling(struct mmc_host *host)
		return err;
		}

		dev_pm_opp_remove(mmc_classdev(host),
		host->clk_scaling.devfreq_profile.freq_table[0]);
		dev_pm_opp_remove(mmc_classdev(host),
		host->clk_scaling.devfreq_profile.freq_table[1]);

		kfree(host->clk_scaling.devfreq_profile.freq_table);

		host->clk_scaling.devfreq = NULL;