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Commit 50ad93d9 authored by Sivan Reinstein's avatar Sivan Reinstein
Browse files

msm: ipa: enable IPA clock during SSR and power collapse 



During SSR and power collapse, the IPA clock is disabled,
and writing to registers during the SSR cleanup/initialization
is crashing the target.
This fix enables the IPA clock before writing to registers
during SSR.

CRs-fixed: 717676
Change-Id: Ibd502d71432f699aaabed3859f438cd9f446ec32
Signed-off-by: default avatarSivan Reinstein <sivanr@codeaurora.org>
parent 61112455

drivers/platform/msm/ipa/ipa.c

+9 −0
Original line number Diff line number Diff line
@@ -1064,11 +1064,14 @@ int ipa_init_q6_smem(void) 
{

	int rc;



	ipa_inc_client_enable_clks();



	rc = ipa_init_smem_region(IPA_v2_RAM_MODEM_SIZE,

				  IPA_v2_RAM_MODEM_OFST);



	if (rc) {

		IPAERR("failed to initialize Modem RAM memory\n");

		ipa_dec_client_disable_clks();

		return rc;

	}
@@ -1077,9 +1080,12 @@ int ipa_init_q6_smem(void) 


	if (rc) {

		IPAERR("failed to initialize Modem HDRs RAM memory\n");

		ipa_dec_client_disable_clks();

		return rc;

	}



	ipa_dec_client_disable_clks();



	return rc;

}
@@ -1409,6 +1415,8 @@ int ipa_q6_cleanup(void) 
	int client_idx;

	int res;



	ipa_inc_client_enable_clks();



	if (ipa_q6_pipe_delay()) {

		IPAERR("Failed to delay Q6 pipes\n");

		BUG();
@@ -1438,6 +1446,7 @@ int ipa_q6_cleanup(void) 
				BUG();

		}



	ipa_dec_client_disable_clks();

	return 0;

}