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Commit 01779102 authored by Manikandan Mohan's avatar Manikandan Mohan
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cnss2: Add support for PCIE gen switch 



Add support for PCIE gen switch request from wlan driver using
QMI message to FW.

Change-Id: I6ea4ee234a38162cb9093d36d580c872b4d62644
Signed-off-by: default avatarManikandan Mohan <manikand@codeaurora.org>
parent 0e2097ce

android/abi_gki_aarch64_qcom_internal

+1 −0
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ 
  cnss_get_user_msi_assignment

  cnss_get_msi_irq

  cnss_get_msi_address

  cnss_set_pcie_gen_speed

  register_cld_cmd_cb

  deregister_cld_cmd_cb

  cld80211_get_genl_family

drivers/net/wireless/cnss2/main.c

+20 −0
Original line number Diff line number Diff line
@@ -318,6 +318,24 @@ int cnss_set_fw_log_mode(struct device *dev, u8 fw_log_mode) 
}

EXPORT_SYMBOL(cnss_set_fw_log_mode);



int cnss_set_pcie_gen_speed(struct device *dev, u8 pcie_gen_speed)

{

	struct cnss_plat_data *plat_priv = cnss_bus_dev_to_plat_priv(dev);



	if (plat_priv->device_id != QCA6490_DEVICE_ID ||

	    !plat_priv->fw_pcie_gen_switch)

		return -ENOTSUPP;



	if (pcie_gen_speed < QMI_PCIE_GEN_SPEED_1_V01 ||

	    pcie_gen_speed > QMI_PCIE_GEN_SPEED_3_V01)

		return -EINVAL;



	cnss_pr_dbg("WLAN provided PCIE gen speed: %d\n", pcie_gen_speed);

	plat_priv->pcie_gen_speed = pcie_gen_speed;

	return 0;

}

EXPORT_SYMBOL(cnss_set_pcie_gen_speed);



static int cnss_fw_mem_ready_hdlr(struct cnss_plat_data *plat_priv)

{

	int ret = 0;
@@ -395,6 +413,8 @@ static int cnss_fw_ready_hdlr(struct cnss_plat_data *plat_priv) 
	set_bit(CNSS_FW_READY, &plat_priv->driver_state);

	clear_bit(CNSS_DEV_ERR_NOTIFY, &plat_priv->driver_state);



	cnss_wlfw_send_pcie_gen_speed_sync(plat_priv);



	if (test_bit(CNSS_FW_BOOT_RECOVERY, &plat_priv->driver_state)) {

		clear_bit(CNSS_FW_BOOT_RECOVERY, &plat_priv->driver_state);

		clear_bit(CNSS_DRIVER_RECOVERY, &plat_priv->driver_state);

drivers/net/wireless/cnss2/main.h

+2 −0
Original line number Diff line number Diff line
@@ -407,6 +407,8 @@ struct cnss_plat_data { 
	u8 use_nv_mac;

	u8 set_wlaon_pwr_ctrl;

	struct cnss_tcs_info tcs_info;

	bool fw_pcie_gen_switch;

	u8 pcie_gen_speed;

};



#ifdef CONFIG_ARCH_QCOM

drivers/net/wireless/cnss2/qmi.c

+62 −0
Original line number Diff line number Diff line
@@ -452,6 +452,10 @@ int cnss_wlfw_tgt_cap_send_sync(struct cnss_plat_data *plat_priv) 
	if (resp->otp_version_valid)

		plat_priv->otp_version = resp->otp_version;



	if (resp->fw_caps_valid)

		plat_priv->fw_pcie_gen_switch =

			!!(resp->fw_caps & QMI_WLFW_HOST_PCIE_GEN_SWITCH_V01);



	cnss_pr_dbg("Target capability: chip_id: 0x%x, chip_family: 0x%x, board_id: 0x%x, soc_id: 0x%x, fw_version: 0x%x, fw_build_timestamp: %s, fw_build_id: %s, otp_version: 0x%x\n",

		    plat_priv->chip_info.chip_id,

		    plat_priv->chip_info.chip_family,
@@ -1287,6 +1291,64 @@ int cnss_wlfw_ini_send_sync(struct cnss_plat_data *plat_priv, 
	return ret;

}



int cnss_wlfw_send_pcie_gen_speed_sync(struct cnss_plat_data *plat_priv)

{

	struct wlfw_pcie_gen_switch_req_msg_v01 req;

	struct wlfw_pcie_gen_switch_resp_msg_v01 resp;

	struct qmi_txn txn;

	int ret = 0;



	if (!plat_priv)

		return -ENODEV;



	if (plat_priv->pcie_gen_speed == QMI_PCIE_GEN_SPEED_INVALID_V01 ||

	    !plat_priv->fw_pcie_gen_switch) {

		cnss_pr_dbg("PCIE Gen speed not setup\n");

		return 0;

	}



	cnss_pr_dbg("Sending PCIE Gen speed: %d state: 0x%lx\n",

		    plat_priv->pcie_gen_speed, plat_priv->driver_state);

	req.pcie_speed = (enum wlfw_pcie_gen_speed_v01)

			plat_priv->pcie_gen_speed;



	ret = qmi_txn_init(&plat_priv->qmi_wlfw, &txn,

			   wlfw_pcie_gen_switch_resp_msg_v01_ei, &resp);

	if (ret < 0) {

		cnss_pr_err("Failed to initialize txn for PCIE speed switch err: %d\n",

			    ret);

		goto out;

	}



	ret = qmi_send_request(&plat_priv->qmi_wlfw, NULL, &txn,

			       QMI_WLFW_PCIE_GEN_SWITCH_REQ_V01,

			       WLFW_PCIE_GEN_SWITCH_REQ_MSG_V01_MAX_MSG_LEN,

			       wlfw_pcie_gen_switch_req_msg_v01_ei, &req);

	if (ret < 0) {

		qmi_txn_cancel(&txn);

		cnss_pr_err("Failed to send PCIE speed switch, err: %d\n", ret);

		goto out;

	}



	ret = qmi_txn_wait(&txn, QMI_WLFW_TIMEOUT_JF);

	if (ret < 0) {

		cnss_pr_err("Failed to wait for PCIE Gen switch resp, err: %d\n",

			    ret);

		goto out;

	}



	if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {

		cnss_pr_err("PCIE Gen Switch req failed, Speed: %d, result: %d, err: %d\n",

			    plat_priv->pcie_gen_speed, resp.resp.result,

			    resp.resp.error);

		ret = -resp.resp.result;

	}

out:

	/* Reset PCIE Gen speed after one time use */

	plat_priv->pcie_gen_speed = QMI_PCIE_GEN_SPEED_INVALID_V01;

	return ret;

}



int cnss_wlfw_antenna_switch_send_sync(struct cnss_plat_data *plat_priv)

{

	struct wlfw_antenna_switch_req_msg_v01 *req;

drivers/net/wireless/cnss2/qmi.h

+4 −0
Original line number Diff line number Diff line
@@ -67,6 +67,7 @@ int coex_antenna_switch_to_mdm_send_sync_msg(struct cnss_plat_data *plat_priv); 
int cnss_wlfw_qdss_trace_mem_info_send_sync(struct cnss_plat_data *plat_priv);

int cnss_register_ims_service(struct cnss_plat_data *plat_priv);

void cnss_unregister_ims_service(struct cnss_plat_data *plat_priv);

int cnss_wlfw_send_pcie_gen_speed_sync(struct cnss_plat_data *plat_priv);

#else

#define QMI_WLFW_TIMEOUT_MS		10000
@@ -217,6 +218,9 @@ int cnss_register_ims_service(struct cnss_plat_data *plat_priv) 
static inline

void cnss_unregister_ims_service(struct cnss_plat_data *plat_priv) {}



static inline

int cnss_wlfw_send_pcie_gen_speed_sync(struct cnss_plat_data *plat_priv) {}



#endif /* CONFIG_CNSS2_QMI */



#endif /* _CNSS_QMI_H */