[PATCH v5 03/10] scsi: ufs: ufs-qcom: Setup host power mode during init

Can Guo
2023-11-23T08:47:22Z

Setup host power mode and its limitations during UFS host driver init to
avoid repetitive work during every power mode change.

Acked-by: Andrew Halaney <ahalaney@redhat.com>
Co-developed-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Can Guo <quic_cang@quicinc.com>
---
drivers/ufs/host/ufs-qcom.c | 21 ++++++++++++++-------
drivers/ufs/host/ufs-qcom.h | 1 +
2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index cc30ad9..cc0eb37 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -898,7 +898,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
struct ufs_pa_layer_attr *dev_req_params)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
- struct ufs_host_params host_params;
+ struct ufs_host_params *host_params = &host->host_params;
int ret = 0;

if (!dev_req_params) {
@@ -908,12 +908,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,

switch (status) {
case PRE_CHANGE:
- ufshcd_init_host_param(&host_params);
-
- /* This driver only supports symmetic gear setting i.e., hs_tx_gear == hs_rx_gear */
- host_params.hs_tx_gear = host_params.hs_rx_gear = ufs_qcom_get_hs_gear(hba);
-
- ret = ufshcd_negotiate_pwr_param(&host_params, dev_max_params, dev_req_params);
+ ret = ufshcd_negotiate_pwr_param(host_params, dev_max_params, dev_req_params);
if (ret) {
dev_err(hba->dev, "%s: failed to determine capabilities\n",
__func__);
@@ -1048,6 +1043,17 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
hba->quirks |= UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH;
}

+static void ufs_qcom_set_host_params(struct ufs_hba *hba)
+{
+ struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+ struct ufs_host_params *host_params = &host->host_params;
+
+ ufshcd_init_host_param(host_params);
+
+ /* This driver only supports symmetic gear setting i.e., hs_tx_gear == hs_rx_gear */
+ host_params->hs_tx_gear = host_params->hs_rx_gear = ufs_qcom_get_hs_gear(hba);
+}
+
static void ufs_qcom_set_caps(struct ufs_hba *hba)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
@@ -1272,6 +1278,7 @@ static int ufs_qcom_init(struct ufs_hba *hba)

ufs_qcom_set_caps(hba);
ufs_qcom_advertise_quirks(hba);
+ ufs_qcom_set_host_params(hba);

err = ufs_qcom_ice_init(host);
if (err)
diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h
index 82cd143..11419eb 100644
--- a/drivers/ufs/host/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -238,6 +238,7 @@ struct ufs_qcom_host {

struct gpio_desc *device_reset;

+ struct ufs_host_params host_params;
u32 phy_gear;

bool esi_enabled;
--
2.7.4