evie/android_kernel_oneplus_msm8998
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msm: ipa3: fix freeze vote for SSR

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Reset the freeze vote after modem SSR to allow IPA clock gating.

Change-Id: Ice78831abc52aed44d640109e1453da7e2af9702
CRs-Fixed: 2002197
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
This commit is contained in:
Skylar Chang 2017-02-02 14:26:38 -08:00
parent 110e102fe3
commit 2eaebfbcb4
3 changed files with 36 additions and 14 deletions
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45
drivers/platform/msm/ipa/ipa_v3/ipa.c
View file

@ -3715,30 +3715,49 @@ static void ipa3_destroy_flt_tbl_idrs(void)
static void ipa3_freeze_clock_vote_and_notify_modem(void)
{
int res;
u32 ipa_clk_state;
struct ipa_active_client_logging_info log_info;
if (ipa3_ctx->smp2p_info.res_sent)
return;
if (ipa3_ctx->smp2p_info.out_base_id == 0) {
IPAERR("smp2p out gpio not assigned\n");
return;
}
IPA_ACTIVE_CLIENTS_PREP_SPECIAL(log_info, "FREEZE_VOTE");
res = ipa3_inc_client_enable_clks_no_block(&log_info);
if (res)
ipa_clk_state = 0;
ipa3_ctx->smp2p_info.ipa_clk_on = false;
else
ipa_clk_state = 1;
ipa3_ctx->smp2p_info.ipa_clk_on = true;
if (ipa3_ctx->smp2p_info.out_base_id) {
gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +
IPA_GPIO_OUT_CLK_VOTE_IDX, ipa_clk_state);
gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +
IPA_GPIO_OUT_CLK_RSP_CMPLT_IDX, 1);
ipa3_ctx->smp2p_info.res_sent = true;
} else {
IPAERR("smp2p out gpio not assigned\n");
}
gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +
IPA_GPIO_OUT_CLK_VOTE_IDX,
ipa3_ctx->smp2p_info.ipa_clk_on);
gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +
IPA_GPIO_OUT_CLK_RSP_CMPLT_IDX, 1);
IPADBG("IPA clocks are %s\n", ipa_clk_state ? "ON" : "OFF");
ipa3_ctx->smp2p_info.res_sent = true;
IPADBG("IPA clocks are %s\n",
ipa3_ctx->smp2p_info.ipa_clk_on ? "ON" : "OFF");
}
void ipa3_reset_freeze_vote(void)
{
if (ipa3_ctx->smp2p_info.res_sent == false)
return;
if (ipa3_ctx->smp2p_info.ipa_clk_on)
IPA_ACTIVE_CLIENTS_DEC_SPECIAL("FREEZE_VOTE");
gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +
IPA_GPIO_OUT_CLK_VOTE_IDX, 0);
gpio_set_value(ipa3_ctx->smp2p_info.out_base_id +
IPA_GPIO_OUT_CLK_RSP_CMPLT_IDX, 0);
ipa3_ctx->smp2p_info.res_sent = false;
ipa3_ctx->smp2p_info.ipa_clk_on = false;
}
static int ipa3_panic_notifier(struct notifier_block *this,

2
drivers/platform/msm/ipa/ipa_v3/ipa_i.h
View file

@ -1002,6 +1002,7 @@ struct ipa3cm_client_info {
struct ipa3_smp2p_info {
u32 out_base_id;
u32 in_base_id;
bool ipa_clk_on;
bool res_sent;
};
@ -2045,6 +2046,7 @@ void ipa3_recycle_wan_skb(struct sk_buff *skb);
int ipa3_smmu_map_peer_reg(phys_addr_t phys_addr, bool map);
int ipa3_smmu_map_peer_buff(u64 iova, phys_addr_t phys_addr,
u32 size, bool map);
void ipa3_reset_freeze_vote(void);
int ipa3_ntn_init(void);
int ipa3_get_ntn_stats(struct Ipa3HwStatsNTNInfoData_t *stats);
struct dentry *ipa_debugfs_get_root(void);

3
drivers/platform/msm/ipa/ipa_v3/rmnet_ipa.c
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
/* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -2435,6 +2435,7 @@ static int ipa3_ssr_notifier_cb(struct notifier_block *this,
ipa3_qmi_service_exit();
/*hold a proxy vote for the modem*/
ipa3_proxy_clk_vote();
ipa3_reset_freeze_vote();
IPAWANINFO("IPA BEFORE_POWERUP handling is complete\n");
break;
case SUBSYS_AFTER_POWERUP: