Adds freeze, thaw and restore callbacks for hibernate and restore
functionality.
Signed-off-by: Anjana Hari <[email protected]>
---
drivers/ufs/core/ufshcd.c | 51 +++++++++++++++++++++++++++++++++++++
drivers/ufs/host/ufs-qcom.c | 8 +++++-
include/ufs/ufshcd.h | 4 +++
3 files changed, 62 insertions(+), 1 deletion(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index ec732e4bbbf4..cabe0b4c0138 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -9825,6 +9825,7 @@ static int ufshcd_resume(struct ufs_hba *hba)
/* enable the host irq as host controller would be active soon */
ufshcd_enable_irq(hba);
+
goto out;
disable_vreg:
@@ -9988,6 +9989,56 @@ void ufshcd_remove(struct ufs_hba *hba)
}
EXPORT_SYMBOL_GPL(ufshcd_remove);
+#ifdef CONFIG_PM_SLEEP
+int ufshcd_system_freeze(struct device *dev)
+{
+
+ return ufshcd_system_suspend(dev);
+
+}
+EXPORT_SYMBOL_GPL(ufshcd_system_freeze);
+
+int ufshcd_system_restore(struct device *dev)
+{
+
+ struct ufs_hba *hba = dev_get_drvdata(dev);
+ int ret;
+
+ ret = ufshcd_system_resume(dev);
+ if (ret)
+ return ret;
+
+ /* Configure UTRL and UTMRL base address registers */
+ ufshcd_writel(hba, lower_32_bits(hba->utrdl_dma_addr),
+ REG_UTP_TRANSFER_REQ_LIST_BASE_L);
+ ufshcd_writel(hba, upper_32_bits(hba->utrdl_dma_addr),
+ REG_UTP_TRANSFER_REQ_LIST_BASE_H);
+ ufshcd_writel(hba, lower_32_bits(hba->utmrdl_dma_addr),
+ REG_UTP_TASK_REQ_LIST_BASE_L);
+ ufshcd_writel(hba, upper_32_bits(hba->utmrdl_dma_addr),
+ REG_UTP_TASK_REQ_LIST_BASE_H);
+ /*
+ * Make sure that UTRL and UTMRL base address registers
+ * are updated with the latest queue addresses. Only after
+ * updating these addresses, we can queue the new commands.
+ */
+ mb();
+
+ /* Resuming from hibernate, assume that link was OFF */
+ ufshcd_set_link_off(hba);
+
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(ufshcd_system_restore);
+
+int ufshcd_system_thaw(struct device *dev)
+{
+ return ufshcd_system_resume(dev);
+}
+EXPORT_SYMBOL_GPL(ufshcd_system_thaw);
+#endif /* CONFIG_PM_SLEEP */
+
/**
* ufshcd_dealloc_host - deallocate Host Bus Adapter (HBA)
* @hba: pointer to Host Bus Adapter (HBA)
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 681da3ea7154..a5243acc1bc8 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1714,10 +1714,16 @@ MODULE_DEVICE_TABLE(acpi, ufs_qcom_acpi_match);
#endif
static const struct dev_pm_ops ufs_qcom_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
.prepare = ufshcd_suspend_prepare,
.complete = ufshcd_resume_complete,
+#ifdef CONFIG_PM_SLEEP
+ .suspend = ufshcd_system_suspend,
+ .resume = ufshcd_system_resume,
+ .freeze = ufshcd_system_freeze,
+ .restore = ufshcd_system_restore,
+ .thaw = ufshcd_system_thaw,
+#endif
};
static struct platform_driver ufs_qcom_pltform = {
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 6d26ff0cc07e..431c3afb2ce0 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1278,8 +1278,12 @@ extern int ufshcd_runtime_resume(struct device *dev);
#ifdef CONFIG_PM_SLEEP
extern int ufshcd_system_suspend(struct device *dev);
extern int ufshcd_system_resume(struct device *dev);
+extern int ufshcd_system_freeze(struct device *dev);
+extern int ufshcd_system_thaw(struct device *dev);
+extern int ufshcd_system_restore(struct device *dev);
#endif
extern int ufshcd_shutdown(struct ufs_hba *hba);
+
extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
int agreed_gear,
int adapt_val);
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
On 2/2/23 08:10, Anjana Hari wrote:
> Adds freeze, thaw and restore callbacks for hibernate and restore
> functionality.
Reviewed-by: Bart Van Assche <[email protected]>