remoteproc: qcom: Add support for parsing fw dt bindings

Add support for parsing "firmware-name" dt bindings which specifies
the relative paths of mba/modem/pas image as strings. Fallback to
the default paths for mba/modem/pas image on -EINVAL.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 71cfac5..7c34477 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -188,6 +188,7 @@ struct q6v5 {
        bool has_alt_reset;
        int mpss_perm;
        int mba_perm;
+       const char *hexagon_mdt_image;
        int version;
 };
 
@@ -860,17 +861,26 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
        phys_addr_t min_addr = PHYS_ADDR_MAX;
        phys_addr_t max_addr = 0;
        bool relocate = false;
-       char seg_name[10];
+       char *fw_name;
+       size_t fw_name_len;
        ssize_t offset;
        size_t size = 0;
        void *ptr;
        int ret;
        int i;
 
-       ret = request_firmware(&fw, "modem.mdt", qproc->dev);
+       fw_name_len = strlen(qproc->hexagon_mdt_image);
+       if (fw_name_len <= 4)
+               return -EINVAL;
+
+       fw_name = kstrdup(qproc->hexagon_mdt_image, GFP_KERNEL);
+       if (!fw_name)
+               return -ENOMEM;
+
+       ret = request_firmware(&fw, fw_name, qproc->dev);
        if (ret < 0) {
-               dev_err(qproc->dev, "unable to load modem.mdt\n");
-               return ret;
+               dev_err(qproc->dev, "unable to load %s\n", fw_name);
+               goto out;
        }
 
        /* Initialize the RMB validator */
@@ -918,10 +928,11 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
                ptr = qproc->mpss_region + offset;
 
                if (phdr->p_filesz) {
-                       snprintf(seg_name, sizeof(seg_name), "modem.b%02d", i);
-                       ret = request_firmware(&seg_fw, seg_name, qproc->dev);
+                       /* Replace "xxx.xxx" with "xxx.bxx" */
+                       sprintf(fw_name + fw_name_len - 3, "b%02d", i);
+                       ret = request_firmware(&seg_fw, fw_name, qproc->dev);
                        if (ret) {
-                               dev_err(qproc->dev, "failed to load %s\n", seg_name);
+                               dev_err(qproc->dev, "failed to load %s\n", fw_name);
                                goto release_firmware;
                        }
 
@@ -960,6 +971,8 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
 
 release_firmware:
        release_firmware(fw);
+out:
+       kfree(fw_name);
 
        return ret < 0 ? ret : 0;
 }
@@ -1075,9 +1088,10 @@ static int qcom_q6v5_register_dump_segments(struct rproc *rproc,
        unsigned long i;
        int ret;
 
-       ret = request_firmware(&fw, "modem.mdt", qproc->dev);
+       ret = request_firmware(&fw, qproc->hexagon_mdt_image, qproc->dev);
        if (ret < 0) {
-               dev_err(qproc->dev, "unable to load modem.mdt\n");
+               dev_err(qproc->dev, "unable to load %s\n",
+                       qproc->hexagon_mdt_image);
                return ret;
        }
 
@@ -1253,6 +1267,7 @@ static int q6v5_probe(struct platform_device *pdev)
        const struct rproc_hexagon_res *desc;
        struct q6v5 *qproc;
        struct rproc *rproc;
+       const char *mba_image;
        int ret;
 
        desc = of_device_get_match_data(&pdev->dev);
@@ -1262,8 +1277,14 @@ static int q6v5_probe(struct platform_device *pdev)
        if (desc->need_mem_protection && !qcom_scm_is_available())
                return -EPROBE_DEFER;
 
+       mba_image = desc->hexagon_mba_image;
+       ret = of_property_read_string_index(pdev->dev.of_node, "firmware-name",
+                                           0, &mba_image);
+       if (ret < 0 && ret != -EINVAL)
+               return ret;
+
        rproc = rproc_alloc(&pdev->dev, pdev->name, &q6v5_ops,
-                           desc->hexagon_mba_image, sizeof(*qproc));
+                           mba_image, sizeof(*qproc));
        if (!rproc) {
                dev_err(&pdev->dev, "failed to allocate rproc\n");
                return -ENOMEM;
@@ -1274,6 +1295,12 @@ static int q6v5_probe(struct platform_device *pdev)
        qproc = (struct q6v5 *)rproc->priv;
        qproc->dev = &pdev->dev;
        qproc->rproc = rproc;
+       qproc->hexagon_mdt_image = "modem.mdt";
+       ret = of_property_read_string_index(pdev->dev.of_node, "firmware-name",
+                                           1, &qproc->hexagon_mdt_image);
+       if (ret < 0 && ret != -EINVAL)
+               return ret;
+
        platform_set_drvdata(pdev, qproc);
 
        ret = q6v5_init_mem(qproc, pdev);

diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index c529a04..f280f19 100644 (file)
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -258,6 +258,7 @@ static int adsp_probe(struct platform_device *pdev)
        const struct adsp_data *desc;
        struct qcom_adsp *adsp;
        struct rproc *rproc;
+       const char *fw_name;
        int ret;
 
        desc = of_device_get_match_data(&pdev->dev);
@@ -267,8 +268,14 @@ static int adsp_probe(struct platform_device *pdev)
        if (!qcom_scm_is_available())
                return -EPROBE_DEFER;
 
+       fw_name = desc->firmware_name;
+       ret = of_property_read_string(pdev->dev.of_node, "firmware-name",
+                                     &fw_name);
+       if (ret < 0 && ret != -EINVAL)
+               return ret;
+
        rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
-                           desc->firmware_name, sizeof(*adsp));
+                           fw_name, sizeof(*adsp));
        if (!rproc) {
                dev_err(&pdev->dev, "unable to allocate remoteproc\n");
                return -ENOMEM;