Commit 881edc16 authored by Sowmiya Sree Elavalagan's avatar Sowmiya Sree Elavalagan Committed by Jeff Johnson
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wifi: ath12k: Power down userPD 



Set the stop bit in SMEM to power down the userPD. Wait for stop-ack IRQ
to indicate power down completion. Release the userPD firmware using its
peripheral ID.

Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.3.1-00130-QCAHKSWPL_SILICONZ-1

Signed-off-by: default avatarSowmiya Sree Elavalagan <quic_ssreeela@quicinc.com>
Reviewed-by: default avatarVasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Signed-off-by: default avatarRaj Kumar Bhagat <quic_rajkbhag@quicinc.com>
Link: https://patch.msgid.link/20250321-ath12k-ahb-v12-12-bb389ed76ae5@quicinc.com


Signed-off-by: default avatarJeff Johnson <jeff.johnson@oss.qualcomm.com>
parent c01d5cc9

drivers/net/wireless/ath/ath12k/ahb.c

+30 −0
Original line number Diff line number Diff line
@@ -463,6 +463,34 @@ static int ath12k_ahb_power_up(struct ath12k_base *ab) 
	return ret;

}



static void ath12k_ahb_power_down(struct ath12k_base *ab, bool is_suspend)

{

	struct ath12k_ahb *ab_ahb = ath12k_ab_to_ahb(ab);

	unsigned long time_left;

	u32 pasid;

	int ret;



	qcom_smem_state_update_bits(ab_ahb->stop_state, BIT(ab_ahb->stop_bit),

				    BIT(ab_ahb->stop_bit));



	time_left = wait_for_completion_timeout(&ab_ahb->userpd_stopped,

						ATH12K_USERPD_STOP_TIMEOUT);

	if (!time_left) {

		ath12k_err(ab, "UserPD stop wait timed out\n");

		return;

	}



	qcom_smem_state_update_bits(ab_ahb->stop_state, BIT(ab_ahb->stop_bit), 0);



	pasid = (u32_encode_bits(ab_ahb->userpd_id, ATH12K_USERPD_ID_MASK)) |

		ATH12K_AHB_UPD_SWID;

	/* Release the firmware */

	ret = qcom_scm_pas_shutdown(pasid);

	if (ret)

		ath12k_err(ab, "scm pas shutdown failed for userPD%d: %d\n",

			   ab_ahb->userpd_id, ret);

}



static void ath12k_ahb_init_qmi_ce_config(struct ath12k_base *ab)

{

	struct ath12k_qmi_ce_cfg *cfg = &ab->qmi.ce_cfg;
@@ -679,6 +707,7 @@ static const struct ath12k_hif_ops ath12k_ahb_hif_ops_ipq5332 = { 
	.irq_disable = ath12k_ahb_ext_irq_disable,

	.map_service_to_pipe = ath12k_ahb_map_service_to_pipe,

	.power_up = ath12k_ahb_power_up,

	.power_down = ath12k_ahb_power_down,

};



static irqreturn_t ath12k_userpd_irq_handler(int irq, void *data)
@@ -1095,6 +1124,7 @@ static void ath12k_ahb_remove(struct platform_device *pdev) 
	struct ath12k_base *ab = platform_get_drvdata(pdev);



	if (test_bit(ATH12K_FLAG_QMI_FAIL, &ab->dev_flags)) {

		ath12k_ahb_power_down(ab, false);

		ath12k_qmi_deinit_service(ab);

		goto qmi_fail;

	}