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From 125681433c8e526356947acf572fe8ca8ad32291 Mon Sep 17 00:00:00 2001
From: Gokul Sriram Palanisamy <gokulsri@codeaurora.org>
Date: Sat, 30 Jan 2021 10:50:05 +0530
Subject: [PATCH] remoteproc: qcom: Add PRNG proxy clock
PRNG clock is needed by the secure PIL, support for the same
is added in subsequent patches.
Signed-off-by: Gokul Sriram Palanisamy <gokulsri@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Nikhil Prakash V <nprakash@codeaurora.org>
---
drivers/remoteproc/qcom_q6v5_wcss.c | 65 +++++++++++++++++++++--------
1 file changed, 47 insertions(+), 18 deletions(-)
--- a/drivers/remoteproc/qcom_q6v5_wcss.c
+++ b/drivers/remoteproc/qcom_q6v5_wcss.c
@@ -91,19 +91,6 @@ enum {
WCSS_QCS404,
};
-struct wcss_data {
- const char *firmware_name;
- unsigned int crash_reason_smem;
- u32 version;
- bool aon_reset_required;
- bool wcss_q6_reset_required;
- const char *ssr_name;
- const char *sysmon_name;
- int ssctl_id;
- const struct rproc_ops *ops;
- bool requires_force_stop;
-};
-
struct q6v5_wcss {
struct device *dev;
@@ -128,6 +115,7 @@ struct q6v5_wcss {
struct clk *qdsp6ss_xo_cbcr;
struct clk *qdsp6ss_core_gfmux;
struct clk *lcc_bcr_sleep;
+ struct clk *prng_clk;
struct regulator *cx_supply;
struct qcom_sysmon *sysmon;
@@ -151,6 +139,21 @@ struct q6v5_wcss {
struct qcom_rproc_ssr ssr_subdev;
};
+struct wcss_data {
+ int (*init_clock)(struct q6v5_wcss *wcss);
+ int (*init_regulator)(struct q6v5_wcss *wcss);
+ const char *firmware_name;
+ unsigned int crash_reason_smem;
+ u32 version;
+ bool aon_reset_required;
+ bool wcss_q6_reset_required;
+ const char *ssr_name;
+ const char *sysmon_name;
+ int ssctl_id;
+ const struct rproc_ops *ops;
+ bool requires_force_stop;
+};
+
static int q6v5_wcss_reset(struct q6v5_wcss *wcss)
{
int ret;
@@ -240,6 +243,12 @@ static int q6v5_wcss_start(struct rproc
struct q6v5_wcss *wcss = rproc->priv;
int ret;
+ ret = clk_prepare_enable(wcss->prng_clk);
+ if (ret) {
+ dev_err(wcss->dev, "prng clock enable failed\n");
+ return ret;
+ }
+
qcom_q6v5_prepare(&wcss->q6v5);
/* Release Q6 and WCSS reset */
@@ -733,6 +742,7 @@ static int q6v5_wcss_stop(struct rproc *
return ret;
}
+ clk_disable_unprepare(wcss->prng_clk);
qcom_q6v5_unprepare(&wcss->q6v5);
return 0;
@@ -900,7 +910,21 @@ static int q6v5_alloc_memory_region(stru
return 0;
}
-static int q6v5_wcss_init_clock(struct q6v5_wcss *wcss)
+static int ipq8074_init_clock(struct q6v5_wcss *wcss)
+{
+ int ret;
+
+ wcss->prng_clk = devm_clk_get(wcss->dev, "prng");
+ if (IS_ERR(wcss->prng_clk)) {
+ ret = PTR_ERR(wcss->prng_clk);
+ if (ret != -EPROBE_DEFER)
+ dev_err(wcss->dev, "Failed to get prng clock\n");
+ return ret;
+ }
+ return 0;
+}
+
+static int qcs404_init_clock(struct q6v5_wcss *wcss)
{
int ret;
@@ -990,7 +1014,7 @@ static int q6v5_wcss_init_clock(struct q
return 0;
}
-static int q6v5_wcss_init_regulator(struct q6v5_wcss *wcss)
+static int qcs404_init_regulator(struct q6v5_wcss *wcss)
{
wcss->cx_supply = devm_regulator_get(wcss->dev, "cx");
if (IS_ERR(wcss->cx_supply))
@@ -1034,12 +1058,14 @@ static int q6v5_wcss_probe(struct platfo
if (ret)
goto free_rproc;
- if (wcss->version == WCSS_QCS404) {
- ret = q6v5_wcss_init_clock(wcss);
+ if (desc->init_clock) {
+ ret = desc->init_clock(wcss);
if (ret)
goto free_rproc;
+ }
- ret = q6v5_wcss_init_regulator(wcss);
+ if (desc->init_regulator) {
+ ret = desc->init_regulator(wcss);
if (ret)
goto free_rproc;
}
@@ -1087,6 +1113,7 @@ static int q6v5_wcss_remove(struct platf
}
static const struct wcss_data wcss_ipq8074_res_init = {
+ .init_clock = ipq8074_init_clock,
.firmware_name = "IPQ8074/q6_fw.mdt",
.crash_reason_smem = WCSS_CRASH_REASON,
.aon_reset_required = true,
@@ -1096,6 +1123,8 @@ static const struct wcss_data wcss_ipq80
};
static const struct wcss_data wcss_qcs404_res_init = {
+ .init_clock = qcs404_init_clock,
+ .init_regulator = qcs404_init_regulator,
.crash_reason_smem = WCSS_CRASH_REASON,
.firmware_name = "wcnss.mdt",
.version = WCSS_QCS404,
|
