linux-kernel - [PATCH 03/12] remoteproc: qcom: Add support for split q6 + m3 wlan firmware

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Date:   Thu, 11 Jul 2019 21:10:59 +0530
From:   Gokul Sriram Palanisamy <gokulsri@...eaurora.org>
To:     agross@...nel.org, david.brown@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, mturquette@...libre.com, sboyd@...nel.org,
        jassisinghbrar@...il.com, ohad@...ery.com,
        bjorn.andersson@...aro.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        sricharan@...eaurora.org, gokulsri@...eaurora.org
Subject: [PATCH 03/12] remoteproc: qcom: Add support for split q6 + m3 wlan firmware

IPQ8074 supports split firmware for q6 and m3 as well.
So add support for loading the m3 firmware before q6.
Now the drivers works fine for both split and unified
firmwares.

Signed-off-by: Gokul Sriram Palanisamy <gokulsri@...eaurora.org>
Signed-off-by: Sricharan R <sricharan@...eaurora.org>
Signed-off-by: Nikhil Prakash V <nprakash@...eaurora.org>
---
 drivers/remoteproc/qcom_q6v5_wcss.c | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c
index 8418f57..5957114 100644
--- a/drivers/remoteproc/qcom_q6v5_wcss.c
+++ b/drivers/remoteproc/qcom_q6v5_wcss.c
@@ -138,12 +138,14 @@ struct q6v5_wcss {
 	u8 version;
 	bool requires_force_stop;
 	bool need_mem_protection;
+	const char *m3_firmware_name;
 };
 
 struct wcss_data {
 	int (*init_clock)(struct q6v5_wcss *wcss);
 	int (*init_regulator)(struct q6v5_wcss *wcss);
-	const char *firmware_name;
+	const char *q6_firmware_name;
+	const char *m3_firmware_name;
 	int crash_reason_smem;
 	u8 version;
 	bool aon_reset_required;
@@ -759,7 +761,26 @@ static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, int len)
 static int q6v5_wcss_load(struct rproc *rproc, const struct firmware *fw)
 {
 	struct q6v5_wcss *wcss = rproc->priv;
+	const struct firmware *m3_fw;
+	int ret;
+
+	if (wcss->m3_firmware_name) {
+		ret = request_firmware(&m3_fw, wcss->m3_firmware_name,
+				       wcss->dev);
+		if (ret)
+			goto skip_m3;
+
+		ret = qcom_mdt_load_no_init(wcss->dev, m3_fw,
+					    wcss->m3_firmware_name, 0,
+					    wcss->mem_region, wcss->mem_phys,
+					    wcss->mem_size, &wcss->mem_reloc);
+		if (ret) {
+			dev_err(wcss->dev, "can't load m3_fw.bXX\n");
+			return ret;
+		}
+	}
 
+skip_m3:
 	if (wcss->need_mem_protection)
 		return qcom_mdt_load(wcss->dev, fw, rproc->firmware,
 				     WCNSS_PAS_ID, wcss->mem_region,
@@ -1055,7 +1076,7 @@ static int q6v5_wcss_probe(struct platform_device *pdev)
 		return -EPROBE_DEFER;
 
 	rproc = rproc_alloc(&pdev->dev, pdev->name, desc->ops,
-			    desc->firmware_name, sizeof(*wcss));
+			    desc->q6_firmware_name, sizeof(*wcss));
 	if (!rproc) {
 		dev_err(&pdev->dev, "failed to allocate rproc\n");
 		return -ENOMEM;
@@ -1068,6 +1089,7 @@ static int q6v5_wcss_probe(struct platform_device *pdev)
 	wcss->version = desc->version;
 	wcss->requires_force_stop = desc->requires_force_stop;
 	wcss->need_mem_protection = desc->need_mem_protection;
+	wcss->m3_firmware_name = desc->m3_firmware_name;
 
 	ret = q6v5_wcss_init_mmio(wcss, pdev);
 	if (ret)
@@ -1130,7 +1152,8 @@ static int q6v5_wcss_remove(struct platform_device *pdev)
 
 static const struct wcss_data wcss_ipq8074_res_init = {
 	.init_clock = ipq8074_init_clock,
-	.firmware_name = "IPQ8074/q6_fw.mdt",
+	.q6_firmware_name = "IPQ8074/q6_fw.mdt",
+	.m3_firmware_name = "IPQ8074/m3_fw.mdt",
 	.crash_reason_smem = 421,
 	.aon_reset_required = true,
 	.ops = &q6v5_wcss_ipq8074_ops,
@@ -1142,7 +1165,7 @@ static int q6v5_wcss_remove(struct platform_device *pdev)
 	.init_clock = qcs404_init_clock,
 	.init_regulator = qcs404_init_regulator,
 	.crash_reason_smem = 421,
-	.firmware_name = "wcnss.mdt",
+	.q6_firmware_name = "wcnss.mdt",
 	.version = WCSS_QCS404,
 	.aon_reset_required = false,
 	.ssr_name = "mpss",
-- 
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