diff options
Diffstat (limited to 'drivers/ufs/core/ufshcd.c')
-rw-r--r-- | drivers/ufs/core/ufshcd.c | 52 |
1 files changed, 19 insertions, 33 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 172d25fef740..70b112038792 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -1409,13 +1409,6 @@ static int ufshcd_devfreq_target(struct device *dev, struct ufs_clk_info *clki; unsigned long irq_flags; - /* - * Skip devfreq if UFS initialization is not finished. - * Otherwise ufs could be in a inconsistent state. - */ - if (!smp_load_acquire(&hba->logical_unit_scan_finished)) - return 0; - if (!ufshcd_is_clkscaling_supported(hba)) return -EINVAL; @@ -1500,7 +1493,7 @@ start_window: scaling->window_start_t = curr_t; scaling->tot_busy_t = 0; - if (hba->outstanding_reqs) { + if (scaling->active_reqs) { scaling->busy_start_t = curr_t; scaling->is_busy_started = true; } else { @@ -2118,7 +2111,7 @@ static void ufshcd_clk_scaling_update_busy(struct ufs_hba *hba) spin_lock_irqsave(hba->host->host_lock, flags); hba->clk_scaling.active_reqs--; - if (!hba->outstanding_reqs && scaling->is_busy_started) { + if (!scaling->active_reqs && scaling->is_busy_started) { scaling->tot_busy_t += ktime_to_us(ktime_sub(ktime_get(), scaling->busy_start_t)); scaling->busy_start_t = 0; @@ -8399,6 +8392,22 @@ static int ufshcd_add_lus(struct ufs_hba *hba) if (ret) goto out; + /* Initialize devfreq after UFS device is detected */ + if (ufshcd_is_clkscaling_supported(hba)) { + memcpy(&hba->clk_scaling.saved_pwr_info.info, + &hba->pwr_info, + sizeof(struct ufs_pa_layer_attr)); + hba->clk_scaling.saved_pwr_info.is_valid = true; + hba->clk_scaling.is_allowed = true; + + ret = ufshcd_devfreq_init(hba); + if (ret) + goto out; + + hba->clk_scaling.is_enabled = true; + ufshcd_init_clk_scaling_sysfs(hba); + } + ufs_bsg_probe(hba); ufshpb_init(hba); scsi_scan_host(hba->host); @@ -8670,12 +8679,6 @@ out: if (ret) { pm_runtime_put_sync(hba->dev); ufshcd_hba_exit(hba); - } else { - /* - * Make sure that when reader code sees UFS initialization has finished, - * all initialization steps have really been executed. - */ - smp_store_release(&hba->logical_unit_scan_finished, true); } } @@ -10316,30 +10319,12 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) */ ufshcd_set_ufs_dev_active(hba); - /* Initialize devfreq */ - if (ufshcd_is_clkscaling_supported(hba)) { - memcpy(&hba->clk_scaling.saved_pwr_info.info, - &hba->pwr_info, - sizeof(struct ufs_pa_layer_attr)); - hba->clk_scaling.saved_pwr_info.is_valid = true; - hba->clk_scaling.is_allowed = true; - - err = ufshcd_devfreq_init(hba); - if (err) - goto rpm_put_sync; - - hba->clk_scaling.is_enabled = true; - ufshcd_init_clk_scaling_sysfs(hba); - } - async_schedule(ufshcd_async_scan, hba); ufs_sysfs_add_nodes(hba->dev); device_enable_async_suspend(dev); return 0; -rpm_put_sync: - pm_runtime_put_sync(dev); free_tmf_queue: blk_mq_destroy_queue(hba->tmf_queue); blk_put_queue(hba->tmf_queue); @@ -10512,4 +10497,5 @@ module_exit(ufshcd_core_exit); MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>"); MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>"); MODULE_DESCRIPTION("Generic UFS host controller driver Core"); +MODULE_SOFTDEP("pre: governor_simpleondemand"); MODULE_LICENSE("GPL"); |