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SubjectRe: [PATCH v3] remoteproc: qcom: Add support for parsing fw dt bindings
On Mon 14 Jan 11:50 PST 2019, Sibi Sankar wrote:

> 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>

Applied,

Thanks,
Bjorn

> ---
>
> v3:
> * Fixed minor code style issues
> * Add comments for firmware blob name generation
> and use sprintf instead
>
> drivers/remoteproc/qcom_q6v5_mss.c | 47 +++++++++++++++++++++++-------
> drivers/remoteproc/qcom_q6v5_pas.c | 9 +++++-
> 2 files changed, 45 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
> index c86dc40cfb8c..41e92a025d21 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 +861,26 @@ 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;
> @@ -1272,6 +1293,12 @@ 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 b1e63fcd5fdf..cfdafd68e2cd 100644
> --- 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;
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>

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