diff options
| author | Asutosh Das <asutoshd@codeaurora.org> | 2020-03-25 19:29:01 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-03-27 03:18:13 +0100 |
| commit | 2c75f9a5be53501a6e733cd72c1c46281eaa49a0 (patch) | |
| tree | 4d897f987d6eefc65f0a5e3508fa48459cd7e8cf /drivers/scsi/ufs | |
| parent | scsi: ufshcd: Update the set frequency to devfreq (diff) | |
| download | linux-2c75f9a5be53501a6e733cd72c1c46281eaa49a0.tar.xz linux-2c75f9a5be53501a6e733cd72c1c46281eaa49a0.zip | |
scsi: ufshcd: Let vendor override devfreq parameters
Vendor drivers may have a need to update the polling interval and
thresholds. Provide a vops for vendor drivers to use.
Link: https://lore.kernel.org/r/acd79e00396cff855256adad47f615ccdbde85ac.1585160616.git.asutoshd@codeaurora.org
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 15 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 12 |
2 files changed, 26 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 95e68a6cef3c..145b67f7b927 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1315,6 +1315,17 @@ static struct devfreq_dev_profile ufs_devfreq_profile = { .get_dev_status = ufshcd_devfreq_get_dev_status, }; +#if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND) +static struct devfreq_simple_ondemand_data ufs_ondemand_data = { + .upthreshold = 70, + .downdifferential = 5, +}; + +static void *gov_data = &ufs_ondemand_data; +#else +static void *gov_data; /* NULL */ +#endif + static int ufshcd_devfreq_init(struct ufs_hba *hba) { struct list_head *clk_list = &hba->clk_list_head; @@ -1330,10 +1341,12 @@ static int ufshcd_devfreq_init(struct ufs_hba *hba) dev_pm_opp_add(hba->dev, clki->min_freq, 0); dev_pm_opp_add(hba->dev, clki->max_freq, 0); + ufshcd_vops_config_scaling_param(hba, &ufs_devfreq_profile, + gov_data); devfreq = devfreq_add_device(hba->dev, &ufs_devfreq_profile, DEVFREQ_GOV_SIMPLE_ONDEMAND, - NULL); + gov_data); if (IS_ERR(devfreq)) { ret = PTR_ERR(devfreq); dev_err(hba->dev, "Unable to register with devfreq %d\n", ret); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 9f1576bbfc50..fce7606b2857 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -56,6 +56,7 @@ #include <linux/completion.h> #include <linux/regulator/consumer.h> #include <linux/bitfield.h> +#include <linux/devfreq.h> #include "unipro.h" #include <asm/irq.h> @@ -327,6 +328,9 @@ struct ufs_hba_variant_ops { void (*dbg_register_dump)(struct ufs_hba *hba); int (*phy_initialization)(struct ufs_hba *); void (*device_reset)(struct ufs_hba *hba); + void (*config_scaling_param)(struct ufs_hba *hba, + struct devfreq_dev_profile *profile, + void *data); }; /* clock gating state */ @@ -1094,6 +1098,14 @@ static inline void ufshcd_vops_device_reset(struct ufs_hba *hba) } } +static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba, + struct devfreq_dev_profile + *profile, void *data) +{ + if (hba->vops && hba->vops->config_scaling_param) + hba->vops->config_scaling_param(hba, profile, data); +} + extern struct ufs_pm_lvl_states ufs_pm_lvl_states[]; /* |