@@ -765,7 +765,7 @@ static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba,
{
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
struct phy *generic_phy = ufs->phy;
- struct ufs_dev_params ufs_exynos_cap;
+ struct ufs_host_params host_params;
int ret;
if (!dev_req_params) {
@@ -774,10 +774,9 @@ static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba,
goto out;
}
- ufshcd_init_pwr_dev_param(&ufs_exynos_cap);
+ ufshcd_init_host_param(&host_params);
- ret = ufshcd_get_pwr_dev_param(&ufs_exynos_cap,
- dev_max_params, dev_req_params);
+ ret = ufshcd_negotiate_pwr_param(&host_params, dev_max_params, dev_req_params);
if (ret) {
pr_err("%s: failed to determine capabilities\n", __func__);
goto out;
@@ -293,9 +293,9 @@ static int ufs_hisi_link_startup_notify(struct ufs_hba *hba,
return err;
}
-static void ufs_hisi_set_dev_cap(struct ufs_dev_params *hisi_param)
+static void ufs_hisi_set_dev_cap(struct ufs_host_params *host_params)
{
- ufshcd_init_pwr_dev_param(hisi_param);
+ ufshcd_init_host_param(host_params);
}
static void ufs_hisi_pwr_change_pre_change(struct ufs_hba *hba)
@@ -365,7 +365,7 @@ static int ufs_hisi_pwr_change_notify(struct ufs_hba *hba,
struct ufs_pa_layer_attr *dev_max_params,
struct ufs_pa_layer_attr *dev_req_params)
{
- struct ufs_dev_params ufs_hisi_cap;
+ struct ufs_host_params host_params;
int ret = 0;
if (!dev_req_params) {
@@ -377,9 +377,8 @@ static int ufs_hisi_pwr_change_notify(struct ufs_hba *hba,
switch (status) {
case PRE_CHANGE:
- ufs_hisi_set_dev_cap(&ufs_hisi_cap);
- ret = ufshcd_get_pwr_dev_param(&ufs_hisi_cap,
- dev_max_params, dev_req_params);
+ ufs_hisi_set_dev_cap(&host_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__);
@@ -996,16 +996,14 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba,
struct ufs_pa_layer_attr *dev_req_params)
{
struct ufs_mtk_host *host = ufshcd_get_variant(hba);
- struct ufs_dev_params host_cap;
+ struct ufs_host_params host_params;
int ret;
- ufshcd_init_pwr_dev_param(&host_cap);
- host_cap.hs_rx_gear = UFS_HS_G5;
- host_cap.hs_tx_gear = UFS_HS_G5;
+ ufshcd_init_host_param(&host_params);
+ host_params.hs_rx_gear = UFS_HS_G5;
+ host_params.hs_tx_gear = UFS_HS_G5;
- ret = ufshcd_get_pwr_dev_param(&host_cap,
- dev_max_params,
- dev_req_params);
+ ret = ufshcd_negotiate_pwr_param(&host_params, dev_max_params, dev_req_params);
if (ret) {
pr_info("%s: failed to determine capabilities\n",
__func__);
@@ -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_dev_params ufs_qcom_cap;
+ struct ufs_host_params host_params;
int ret = 0;
if (!dev_req_params) {
@@ -908,15 +908,13 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
switch (status) {
case PRE_CHANGE:
- ufshcd_init_pwr_dev_param(&ufs_qcom_cap);
- ufs_qcom_cap.hs_rate = UFS_QCOM_LIMIT_HS_RATE;
+ 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 */
- ufs_qcom_cap.hs_tx_gear = ufs_qcom_cap.hs_rx_gear = ufs_qcom_get_hs_gear(hba);
+ host_params.hs_tx_gear = host_params.hs_rx_gear = ufs_qcom_get_hs_gear(hba);
- ret = ufshcd_get_pwr_dev_param(&ufs_qcom_cap,
- 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__);
@@ -285,61 +285,60 @@ static int ufshcd_parse_operating_points(struct ufs_hba *hba)
}
/**
- * ufshcd_get_pwr_dev_param - get finally agreed attributes for
- * power mode change
- * @pltfrm_param: pointer to platform parameters
+ * ufshcd_negotiate_pwr_param - find power mode settings that are supported by
+ both the controller and the device
+ * @host_param: pointer to host parameters
* @dev_max: pointer to device attributes
* @agreed_pwr: returned agreed attributes
*
* Return: 0 on success, non-zero value on failure.
*/
-int ufshcd_get_pwr_dev_param(const struct ufs_dev_params *pltfrm_param,
- const struct ufs_pa_layer_attr *dev_max,
- struct ufs_pa_layer_attr *agreed_pwr)
+int ufshcd_negotiate_pwr_param(const struct ufs_host_params *host_param,
+ const struct ufs_pa_layer_attr *dev_max,
+ struct ufs_pa_layer_attr *agreed_pwr)
{
- int min_pltfrm_gear;
+ int min_host_gear;
int min_dev_gear;
bool is_dev_sup_hs = false;
- bool is_pltfrm_max_hs = false;
+ bool is_host_max_hs = false;
if (dev_max->pwr_rx == FAST_MODE)
is_dev_sup_hs = true;
- if (pltfrm_param->desired_working_mode == UFS_HS_MODE) {
- is_pltfrm_max_hs = true;
- min_pltfrm_gear = min_t(u32, pltfrm_param->hs_rx_gear,
- pltfrm_param->hs_tx_gear);
+ if (host_param->desired_working_mode == UFS_HS_MODE) {
+ is_host_max_hs = true;
+ min_host_gear = min_t(u32, host_param->hs_rx_gear,
+ host_param->hs_tx_gear);
} else {
- min_pltfrm_gear = min_t(u32, pltfrm_param->pwm_rx_gear,
- pltfrm_param->pwm_tx_gear);
+ min_host_gear = min_t(u32, host_param->pwm_rx_gear,
+ host_param->pwm_tx_gear);
}
/*
- * device doesn't support HS but
- * pltfrm_param->desired_working_mode is HS,
- * thus device and pltfrm_param don't agree
+ * device doesn't support HS but host_param->desired_working_mode is HS,
+ * thus device and host_param don't agree
*/
- if (!is_dev_sup_hs && is_pltfrm_max_hs) {
+ if (!is_dev_sup_hs && is_host_max_hs) {
pr_info("%s: device doesn't support HS\n",
__func__);
return -ENOTSUPP;
- } else if (is_dev_sup_hs && is_pltfrm_max_hs) {
+ } else if (is_dev_sup_hs && is_host_max_hs) {
/*
* since device supports HS, it supports FAST_MODE.
- * since pltfrm_param->desired_working_mode is also HS
+ * since host_param->desired_working_mode is also HS
* then final decision (FAST/FASTAUTO) is done according
* to pltfrm_params as it is the restricting factor
*/
- agreed_pwr->pwr_rx = pltfrm_param->rx_pwr_hs;
+ agreed_pwr->pwr_rx = host_param->rx_pwr_hs;
agreed_pwr->pwr_tx = agreed_pwr->pwr_rx;
} else {
/*
- * here pltfrm_param->desired_working_mode is PWM.
+ * here host_param->desired_working_mode is PWM.
* it doesn't matter whether device supports HS or PWM,
- * in both cases pltfrm_param->desired_working_mode will
+ * in both cases host_param->desired_working_mode will
* determine the mode
*/
- agreed_pwr->pwr_rx = pltfrm_param->rx_pwr_pwm;
+ agreed_pwr->pwr_rx = host_param->rx_pwr_pwm;
agreed_pwr->pwr_tx = agreed_pwr->pwr_rx;
}
@@ -349,9 +348,9 @@ int ufshcd_get_pwr_dev_param(const struct ufs_dev_params *pltfrm_param,
* the same decision will be made for rx
*/
agreed_pwr->lane_tx = min_t(u32, dev_max->lane_tx,
- pltfrm_param->tx_lanes);
+ host_param->tx_lanes);
agreed_pwr->lane_rx = min_t(u32, dev_max->lane_rx,
- pltfrm_param->rx_lanes);
+ host_param->rx_lanes);
/* device maximum gear is the minimum between device rx and tx gears */
min_dev_gear = min_t(u32, dev_max->gear_rx, dev_max->gear_tx);
@@ -364,26 +363,26 @@ int ufshcd_get_pwr_dev_param(const struct ufs_dev_params *pltfrm_param,
* what is the gear, as it is the one that also decided previously what
* pwr the device will be configured to.
*/
- if ((is_dev_sup_hs && is_pltfrm_max_hs) ||
- (!is_dev_sup_hs && !is_pltfrm_max_hs)) {
+ if ((is_dev_sup_hs && is_host_max_hs) ||
+ (!is_dev_sup_hs && !is_host_max_hs)) {
agreed_pwr->gear_rx =
- min_t(u32, min_dev_gear, min_pltfrm_gear);
+ min_t(u32, min_dev_gear, min_host_gear);
} else if (!is_dev_sup_hs) {
agreed_pwr->gear_rx = min_dev_gear;
} else {
- agreed_pwr->gear_rx = min_pltfrm_gear;
+ agreed_pwr->gear_rx = min_host_gear;
}
agreed_pwr->gear_tx = agreed_pwr->gear_rx;
- agreed_pwr->hs_rate = pltfrm_param->hs_rate;
+ agreed_pwr->hs_rate = host_param->hs_rate;
return 0;
}
-EXPORT_SYMBOL_GPL(ufshcd_get_pwr_dev_param);
+EXPORT_SYMBOL_GPL(ufshcd_negotiate_pwr_param);
-void ufshcd_init_pwr_dev_param(struct ufs_dev_params *dev_param)
+void ufshcd_init_host_param(struct ufs_host_params *host_param)
{
- *dev_param = (struct ufs_dev_params){
+ *host_param = (struct ufs_host_params){
.tx_lanes = UFS_LANE_2,
.rx_lanes = UFS_LANE_2,
.hs_rx_gear = UFS_HS_G3,
@@ -398,7 +397,7 @@ void ufshcd_init_pwr_dev_param(struct ufs_dev_params *dev_param)
.desired_working_mode = UFS_HS_MODE,
};
}
-EXPORT_SYMBOL_GPL(ufshcd_init_pwr_dev_param);
+EXPORT_SYMBOL_GPL(ufshcd_init_host_param);
/**
* ufshcd_pltfrm_init - probe routine of the driver
@@ -10,7 +10,7 @@
#define UFS_PWM_MODE 1
#define UFS_HS_MODE 2
-struct ufs_dev_params {
+struct ufs_host_params {
u32 pwm_rx_gear; /* pwm rx gear to work in */
u32 pwm_tx_gear; /* pwm tx gear to work in */
u32 hs_rx_gear; /* hs rx gear to work in */
@@ -25,10 +25,10 @@ struct ufs_dev_params {
u32 desired_working_mode;
};
-int ufshcd_get_pwr_dev_param(const struct ufs_dev_params *dev_param,
- const struct ufs_pa_layer_attr *dev_max,
- struct ufs_pa_layer_attr *agreed_pwr);
-void ufshcd_init_pwr_dev_param(struct ufs_dev_params *dev_param);
+int ufshcd_negotiate_pwr_param(const struct ufs_host_params *host_param,
+ const struct ufs_pa_layer_attr *dev_max,
+ struct ufs_pa_layer_attr *agreed_pwr);
+void ufshcd_init_host_param(struct ufs_host_params *host_param);
int ufshcd_pltfrm_init(struct platform_device *pdev,
const struct ufs_hba_variant_ops *vops);
int ufshcd_populate_vreg(struct device *dev, const char *name,