remoteproc: qcom: Compatible string based resource initialization.

This patch initialize certain driver related data based on compatible
string. This enable driver to handle more than one similar device in
by differentiating in probe their private data.
Signed-off-by: NAvaneesh Kumar Dwivedi <akdwived@codeaurora.org>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/qcom_adsp_pil.c

@@ -32,9 +32,11 @@
 #include "qcom_mdt_loader.h"
 #include "remoteproc_internal.h"
 
-#define ADSP_CRASH_REASON_SMEM		423
-#define ADSP_FIRMWARE_NAME		"adsp.mdt"
-#define ADSP_PAS_ID			1
+struct adsp_data {
+	int crash_reason_smem;
+	const char *firmware_name;
+	int pas_id;
+};
 
 struct qcom_adsp {
 	struct device *dev;
@@ -53,6 +55,9 @@ struct qcom_adsp {
 
 	struct regulator *cx_supply;
 
+	int pas_id;
+	int crash_reason_smem;
+
 	struct completion start_done;
 	struct completion stop_done;
 
@@ -70,7 +75,7 @@ static int adsp_load(struct rproc *rproc, const struct firmware *fw)
 	bool relocate;
 	int ret;
 
-	ret = qcom_scm_pas_init_image(ADSP_PAS_ID, fw->data, fw->size);
+	ret = qcom_scm_pas_init_image(adsp->pas_id, fw->data, fw->size);
 	if (ret) {
 		dev_err(&rproc->dev, "invalid firmware metadata\n");
 		return ret;
@@ -85,7 +90,8 @@ static int adsp_load(struct rproc *rproc, const struct firmware *fw)
 	if (relocate) {
 		adsp->mem_reloc = fw_addr;
 
-		ret = qcom_scm_pas_mem_setup(ADSP_PAS_ID, adsp->mem_phys, fw_size);
+		ret = qcom_scm_pas_mem_setup(adsp->pas_id,
+					     adsp->mem_phys, fw_size);
 		if (ret) {
 			dev_err(&rproc->dev, "unable to setup memory for image\n");
 			return ret;
@@ -113,7 +119,7 @@ static int adsp_start(struct rproc *rproc)
 	if (ret)
 		goto disable_clocks;
 
-	ret = qcom_scm_pas_auth_and_reset(ADSP_PAS_ID);
+	ret = qcom_scm_pas_auth_and_reset(adsp->pas_id);
 	if (ret) {
 		dev_err(adsp->dev,
 			"failed to authenticate image and release reset\n");
@@ -124,7 +130,7 @@ static int adsp_start(struct rproc *rproc)
 					  msecs_to_jiffies(5000));
 	if (!ret) {
 		dev_err(adsp->dev, "start timed out\n");
-		qcom_scm_pas_shutdown(ADSP_PAS_ID);
+		qcom_scm_pas_shutdown(adsp->pas_id);
 		ret = -ETIMEDOUT;
 		goto disable_regulators;
 	}
@@ -157,7 +163,7 @@ static int adsp_stop(struct rproc *rproc)
 				    BIT(adsp->stop_bit),
 				    0);
 
-	ret = qcom_scm_pas_shutdown(ADSP_PAS_ID);
+	ret = qcom_scm_pas_shutdown(adsp->pas_id);
 	if (ret)
 		dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
 
@@ -197,7 +203,7 @@ static irqreturn_t adsp_fatal_interrupt(int irq, void *dev)
 	size_t len;
 	char *msg;
 
-	msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, ADSP_CRASH_REASON_SMEM, &len);
+	msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, adsp->crash_reason_smem, &len);
 	if (!IS_ERR(msg) && len > 0 && msg[0])
 		dev_err(adsp->dev, "fatal error received: %s\n", msg);
 
@@ -311,20 +317,25 @@ static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
 
 static int adsp_probe(struct platform_device *pdev)
 {
+	const struct adsp_data *desc;
 	struct qcom_adsp *adsp;
 	struct rproc *rproc;
 	int ret;
 
+	desc = of_device_get_match_data(&pdev->dev);
+	if (!desc)
+		return -EINVAL;
+
 	if (!qcom_scm_is_available())
 		return -EPROBE_DEFER;
 
-	if (!qcom_scm_pas_supported(ADSP_PAS_ID)) {
-		dev_err(&pdev->dev, "PAS is not available for ADSP\n");
+	if (!qcom_scm_pas_supported(desc->pas_id)) {
+		dev_err(&pdev->dev, "PAS is not available for subsystem\n");
 		return -ENXIO;
 	}
 
 	rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
-			    ADSP_FIRMWARE_NAME, sizeof(*adsp));
+			    desc->firmware_name, sizeof(*adsp));
 	if (!rproc) {
 		dev_err(&pdev->dev, "unable to allocate remoteproc\n");
 		return -ENOMEM;
@@ -335,6 +346,8 @@ static int adsp_probe(struct platform_device *pdev)
 	adsp = (struct qcom_adsp *)rproc->priv;
 	adsp->dev = &pdev->dev;
 	adsp->rproc = rproc;
+	adsp->pas_id = desc->pas_id;
+	adsp->crash_reason_smem = desc->crash_reason_smem;
 	platform_set_drvdata(pdev, adsp);
 
 	init_completion(&adsp->start_done);
@@ -407,9 +420,15 @@ static int adsp_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct adsp_data adsp_resource_init = {
+		.crash_reason_smem = 423,
+		.firmware_name = "adsp.mdt",
+		.pas_id = 1,
+};
+
 static const struct of_device_id adsp_of_match[] = {
-	{ .compatible = "qcom,msm8974-adsp-pil" },
-	{ .compatible = "qcom,msm8996-adsp-pil" },
+	{ .compatible = "qcom,msm8974-adsp-pil", .data = &adsp_resource_init},
+	{ .compatible = "qcom,msm8996-adsp-pil", .data = &adsp_resource_init},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, adsp_of_match);