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Commit 08608880 authored by Ghanim Fodi's avatar Ghanim Fodi Committed by Gerrit - the friendly Code Review server
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msm: ipa: Load IPA uC via PIL for APQ setups 



Add support to load IPA uC by AP using PIL.
This is needed on APQ setups where there is
no modem.

Change-Id: Ia045e97e692c663b488283c0d9807f4db8d7ac50
Signed-off-by: default avatarGhanim Fodi <gfodi@codeaurora.org>
parent a3d9530a

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

+32 −8
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ 
#endif



#define IPA_SUBSYSTEM_NAME "ipa_fws"

#define IPA_UC_SUBSYSTEM_NAME "ipa_uc"



#include "ipa_i.h"

#include "../ipa_rm_i.h"
@@ -4878,19 +4879,20 @@ static int ipa3_manual_load_ipa_fws(void) 
	return 0;

}



static int ipa3_pil_load_ipa_fws(void)

static int ipa3_pil_load_ipa_fws(const char *sub_sys)

{

	void *subsystem_get_retval = NULL;



	IPADBG("PIL FW loading process initiated\n");

	IPADBG("PIL FW loading process initiated sub_sys=%s\n",

		sub_sys);



	subsystem_get_retval = subsystem_get(IPA_SUBSYSTEM_NAME);

	subsystem_get_retval = subsystem_get(sub_sys);

	if (IS_ERR_OR_NULL(subsystem_get_retval)) {

		IPAERR("Unable to trigger PIL process for FW loading\n");

		IPAERR("Unable to PIL load FW for sub_sys=%s\n", sub_sys);

		return -EINVAL;

	}



	IPADBG("PIL FW loading process is complete\n");

	IPADBG("PIL FW loading process is complete sub_sys=%s\n", sub_sys);

	return 0;

}
@@ -4911,21 +4913,43 @@ static void ipa3_load_ipa_fw(struct work_struct *work) 
	if (ipa3_ctx->ipa3_hw_mode != IPA_HW_MODE_EMULATION &&

	    ((ipa3_ctx->platform_type != IPA_PLAT_TYPE_MDM) ||

	    (ipa3_ctx->ipa_hw_type >= IPA_HW_v3_5)))

		result = ipa3_pil_load_ipa_fws();

		result = ipa3_pil_load_ipa_fws(IPA_SUBSYSTEM_NAME);

	else

		result = ipa3_manual_load_ipa_fws();



	IPA_ACTIVE_CLIENTS_DEC_SIMPLE();



	if (result) {

		IPAERR("IPA FW loading process has failed\n");

		IPAERR("IPA FW loading process has failed result=%d\n",

			result);

		return;

	}

	pr_info("IPA FW loaded successfully\n");



	result = ipa3_post_init(&ipa3_res, ipa3_ctx->cdev.dev);

	if (result)

	if (result) {

		IPAERR("IPA post init failed %d\n", result);

		return;

	}



	if (ipa3_ctx->platform_type == IPA_PLAT_TYPE_APQ &&

		ipa3_ctx->ipa3_hw_mode != IPA_HW_MODE_VIRTUAL &&

		ipa3_ctx->ipa3_hw_mode != IPA_HW_MODE_EMULATION) {



		IPADBG("Loading IPA uC via PIL\n");



		/* Unvoting will happen when uC loaded event received. */

		ipa3_proxy_clk_vote();



		result = ipa3_pil_load_ipa_fws(IPA_UC_SUBSYSTEM_NAME);

		if (result) {

			IPAERR("IPA uC loading process has failed result=%d\n",

				result);

			ipa3_proxy_clk_unvote();

			return;

		}

		IPADBG("IPA uC PIL loading succeeded\n");

	}

}



static ssize_t ipa3_write(struct file *file, const char __user *buf,