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Subject[PATCH v2 2/2] remoteproc: qcom: Add support for parsing fw dt bindings
Date
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>
---
drivers/remoteproc/qcom_q6v5_mss.c | 46 +++++++++++++++++++++++-------
drivers/remoteproc/qcom_q6v5_pas.c | 11 ++++++-
2 files changed, 46 insertions(+), 11 deletions(-)

diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 01be7314e176..c75179006e24 100644
--- 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 +861,27 @@ 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, qproc->hexagon_mdt_image, 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",
+ qproc->hexagon_mdt_image);
+ goto out;
}

/* Initialize the RMB validator */
@@ -918,10 +929,12 @@ 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);
+ snprintf(fw_name + fw_name_len - 3, fw_name_len,
+ "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 +973,8 @@ static int q6v5_mpss_load(struct q6v5 *qproc)

release_firmware:
release_firmware(fw);
+out:
+ kfree(fw_name);

return ret < 0 ? ret : 0;
}
@@ -1075,9 +1090,10 @@ 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 +1269,8 @@ static int q6v5_probe(struct platform_device *pdev)
const struct rproc_hexagon_res *desc;
struct q6v5 *qproc;
struct rproc *rproc;
+ const char *mba_image;
+ const char *fw_name[2];
int ret;

desc = of_device_get_match_data(&pdev->dev);
@@ -1262,8 +1280,15 @@ static int q6v5_probe(struct platform_device *pdev)
if (desc->need_mem_protection && !qcom_scm_is_available())
return -EPROBE_DEFER;

+ ret = of_property_read_string_array(pdev->dev.of_node, "firmware-name",
+ fw_name, 2);
+ if (ret != -EINVAL && ret != 2)
+ return ret > 0 ? -EINVAL : ret;
+
+ mba_image = (ret != 2) ? desc->hexagon_mba_image : fw_name[0];
+
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;
@@ -1272,6 +1297,7 @@ static int q6v5_probe(struct platform_device *pdev)
qproc = (struct q6v5 *)rproc->priv;
qproc->dev = &pdev->dev;
qproc->rproc = rproc;
+ qproc->hexagon_mdt_image = (ret != 2) ? "modem.mdt" : fw_name[1];
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 b1e63fcd5fdf..141c7da29e9a 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -258,6 +258,8 @@ static int adsp_probe(struct platform_device *pdev)
const struct adsp_data *desc;
struct qcom_adsp *adsp;
struct rproc *rproc;
+ const char *fw_name;
+ const char *of_fw_name;
int ret;

desc = of_device_get_match_data(&pdev->dev);
@@ -267,8 +269,15 @@ static int adsp_probe(struct platform_device *pdev)
if (!qcom_scm_is_available())
return -EPROBE_DEFER;

+ ret = of_property_read_string(pdev->dev.of_node, "firmware-name",
+ &of_fw_name);
+ if (ret && ret != -EINVAL)
+ return ret;
+
+ fw_name = ret ? desc->firmware_name : of_fw_name;
+
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;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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