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[PATCH v2 2/7] scsi: ufs: ufs-qcom: Setup host power mode during init

Can Guo posted 7 patches 1 year ago
There is a newer version of this series
[PATCH v2 2/7] scsi: ufs: ufs-qcom: Setup host power mode during init
Posted by Can Guo 1 year ago 
From: Can Guo <quic_cang@quicinc.com>

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

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 | 22 ++++++++++++++--------
 drivers/ufs/host/ufs-qcom.h |  1 +
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index aee66a3..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) {
@@ -908,13 +908,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
 
 	switch (status) {
 	case PRE_CHANGE:
-		ufshcd_init_host_param(&host_params);
-		host_params.hs_rate = UFS_QCOM_LIMIT_HS_RATE;
-
-		/* 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__);
@@ -1049,6 +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);
@@ -1273,6 +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 9950a00..ab94c54 100644
--- a/drivers/ufs/host/ufs-qcom.h
+++ b/drivers/ufs/host/ufs-qcom.h
@@ -240,6 +240,7 @@ struct ufs_qcom_host {
 
 	struct gpio_desc *device_reset;
 
+	struct ufs_host_params host_params;
 	u32 phy_gear;
 
 	bool esi_enabled;
-- 
2.7.4
Re: [PATCH v2 2/7] scsi: ufs: ufs-qcom: Setup host power mode during init
Posted by Manivannan Sadhasivam 1 year ago 
On Mon, Nov 06, 2023 at 08:46:08PM -0800, Can Guo wrote:
> From: Can Guo <quic_cang@quicinc.com>
> 
> Setup host power mode and its limitations during UFS host driver init to
> avoid repetitive work during every power mode change.
> 
> 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 | 22 ++++++++++++++--------
>  drivers/ufs/host/ufs-qcom.h |  1 +
>  2 files changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index aee66a3..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) {
> @@ -908,13 +908,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
>  
>  	switch (status) {
>  	case PRE_CHANGE:
> -		ufshcd_init_host_param(&host_params);
> -		host_params.hs_rate = UFS_QCOM_LIMIT_HS_RATE;

As Andrew spotted, this gets removed without explanation. So, I'd also suggest
doing it in a separate patch.

- Mani

> -
> -		/* 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__);
> @@ -1049,6 +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);
> @@ -1273,6 +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 9950a00..ab94c54 100644
> --- a/drivers/ufs/host/ufs-qcom.h
> +++ b/drivers/ufs/host/ufs-qcom.h
> @@ -240,6 +240,7 @@ struct ufs_qcom_host {
>  
>  	struct gpio_desc *device_reset;
>  
> +	struct ufs_host_params host_params;
>  	u32 phy_gear;
>  
>  	bool esi_enabled;
> -- 
> 2.7.4
> 

-- 
மணிவண்ணன் சதாசிவம்
Re: [PATCH v2 2/7] scsi: ufs: ufs-qcom: Setup host power mode during init
Posted by Can Guo 1 year ago 
Hi Mani,

On 11/8/2023 1:07 PM, Manivannan Sadhasivam wrote:
> On Mon, Nov 06, 2023 at 08:46:08PM -0800, Can Guo wrote:
>> From: Can Guo <quic_cang@quicinc.com>
>>
>> Setup host power mode and its limitations during UFS host driver init to
>> avoid repetitive work during every power mode change.
>>
>> 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 | 22 ++++++++++++++--------
>>   drivers/ufs/host/ufs-qcom.h |  1 +
>>   2 files changed, 15 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
>> index aee66a3..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) {
>> @@ -908,13 +908,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
>>   
>>   	switch (status) {
>>   	case PRE_CHANGE:
>> -		ufshcd_init_host_param(&host_params);
>> -		host_params.hs_rate = UFS_QCOM_LIMIT_HS_RATE;
> 
> As Andrew spotted, this gets removed without explanation. So, I'd also suggest
> doing it in a separate patch.
> 
> - Mani
Sure, will do

Thanks,

Can Guo.
Re: [PATCH v2 2/7] scsi: ufs: ufs-qcom: Setup host power mode during init
Posted by Andrew Halaney 1 year ago 
On Mon, Nov 06, 2023 at 08:46:08PM -0800, Can Guo wrote:
> From: Can Guo <quic_cang@quicinc.com>
> 
> Setup host power mode and its limitations during UFS host driver init to
> avoid repetitive work during every power mode change.
> 
> 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 | 22 ++++++++++++++--------
>  drivers/ufs/host/ufs-qcom.h |  1 +
>  2 files changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index aee66a3..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) {
> @@ -908,13 +908,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
>  
>  	switch (status) {
>  	case PRE_CHANGE:
> -		ufshcd_init_host_param(&host_params);
> -		host_params.hs_rate = UFS_QCOM_LIMIT_HS_RATE;

You drop the setting of hs_rate in your new function. It seems setting that's
also overkill since UFS_QCOM_LIMIT_HS_RATE == PA_HS_MODE_B. hs_rate is
already set to that in ufshcd_init_host_param(), so removing it makes
sense.

Can you remove it prior in its own patch, and remove the now unused
UFS_QCOM_LIMIT_HS_RATE as well from ufs-qcom.h?

With that in place this seems like a good improvement:

Acked-by: Andrew Halaney <ahalaney@redhat.com>

> -
> -		/* 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__);
> @@ -1049,6 +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);
> @@ -1273,6 +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 9950a00..ab94c54 100644
> --- a/drivers/ufs/host/ufs-qcom.h
> +++ b/drivers/ufs/host/ufs-qcom.h
> @@ -240,6 +240,7 @@ struct ufs_qcom_host {
>  
>  	struct gpio_desc *device_reset;
>  
> +	struct ufs_host_params host_params;
>  	u32 phy_gear;
>  
>  	bool esi_enabled;
> -- 
> 2.7.4
> 
>
Re: [PATCH v2 2/7] scsi: ufs: ufs-qcom: Setup host power mode during init
Posted by Can Guo 1 year ago 
Hi Andrew,

On 11/8/2023 4:14 AM, Andrew Halaney wrote:
> On Mon, Nov 06, 2023 at 08:46:08PM -0800, Can Guo wrote:
>> From: Can Guo <quic_cang@quicinc.com>
>>
>> Setup host power mode and its limitations during UFS host driver init to
>> avoid repetitive work during every power mode change.
>>
>> 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 | 22 ++++++++++++++--------
>>   drivers/ufs/host/ufs-qcom.h |  1 +
>>   2 files changed, 15 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
>> index aee66a3..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) {
>> @@ -908,13 +908,7 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
>>   
>>   	switch (status) {
>>   	case PRE_CHANGE:
>> -		ufshcd_init_host_param(&host_params);
>> -		host_params.hs_rate = UFS_QCOM_LIMIT_HS_RATE;
> You drop the setting of hs_rate in your new function. It seems setting that's
> also overkill since UFS_QCOM_LIMIT_HS_RATE == PA_HS_MODE_B. hs_rate is
> already set to that in ufshcd_init_host_param(), so removing it makes
> sense.
>
> Can you remove it prior in its own patch, and remove the now unused
> UFS_QCOM_LIMIT_HS_RATE as well from ufs-qcom.h?

Sure, will address this in next version.

>
> With that in place this seems like a good improvement:
>
> Acked-by: Andrew Halaney <ahalaney@redhat.com>


Thanks,

Can Guo.

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