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Commit de7a0424 authored by Mohammed Javid's avatar Mohammed Javid
Browse files

msm: ipa4: Fix to enable force clear before stopping the channel 



Without enabling the force clear if stop the gsi channel,
stop gsi channel was failing. Added changes to enable the force clear
before stopping the gsi channel.

Change-Id: I5de705a8480f4e3756c21de0230ae156d226ebac
Acked-by: default avatarAshok Vuyyuru <avuyyuru@qti.qualcomm.com>
Signed-off-by: default avatarMohammed Javid <mjavid@codeaurora.org>
parent eb73bc66

drivers/platform/msm/ipa/ipa_v3/ipa_uc_wdi.c

+26 −0
Original line number Diff line number Diff line
@@ -2541,6 +2541,9 @@ int ipa3_write_qmapid_gsi_wdi_pipe(u32 clnt_hdl, u8 qmap_id) 
	struct ipa3_ep_context *ep;

	union __packed gsi_channel_scratch gsi_scratch;

	int retry_cnt = 0;

	u32 source_pipe_bitmask = 0;

	bool disable_force_clear = false;

	struct ipahal_ep_cfg_ctrl_scnd ep_ctrl_scnd = { 0 };



	memset(&gsi_scratch, 0, sizeof(gsi_scratch));

	ep = &ipa3_ctx->ep[clnt_hdl];
@@ -2554,6 +2557,25 @@ int ipa3_write_qmapid_gsi_wdi_pipe(u32 clnt_hdl, u8 qmap_id) 
	}

	if (ep->gsi_offload_state == (IPA_WDI_CONNECTED | IPA_WDI_ENABLED |

						IPA_WDI_RESUMED)) {

		source_pipe_bitmask = 1 <<

			ipa3_get_ep_mapping(ep->client);

		result = ipa3_enable_force_clear(clnt_hdl,

				false, source_pipe_bitmask);

		if (result) {

			/*

			 * assuming here modem SSR, AP can remove

			 * the delay in this case

			 */

			IPAERR("failed to force clear %d\n", result);

			IPAERR("remove delay from SCND reg\n");

			ep_ctrl_scnd.endp_delay = false;

			ipahal_write_reg_n_fields(

					IPA_ENDP_INIT_CTRL_SCND_n, clnt_hdl,

					&ep_ctrl_scnd);

		} else {

			disable_force_clear = true;

		}



retry_gsi_stop:

		result = ipa3_stop_gsi_channel(clnt_hdl);

		if (result != 0 && result != -GSI_STATUS_AGAIN &&
@@ -2588,6 +2610,10 @@ int ipa3_write_qmapid_gsi_wdi_pipe(u32 clnt_hdl, u8 qmap_id) 
			goto fail_start_channel;

		}

	}



	if (disable_force_clear)

		ipa3_disable_force_clear(clnt_hdl);



	IPA_ACTIVE_CLIENTS_DEC_EP(ipa3_get_client_mapping(clnt_hdl));

	return 0;

fail_start_channel: