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soc: qcom: wcnss_ctrl: Allow reading firmware-name from DT

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The WLAN NV firmware blob differs between platforms, and possibly
devices, so add support in the wcnss_ctrl driver for reading the path of
this file from DT in order to allow these files to live in a generic
file system (or linux-firmware).

The new property is optional and the code falls back to the old filename
if the property isn't specified.

Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: Aníbal Limón <anibal.limon@linaro.org>
Link: https://lore.kernel.org/r/20210312003318.3273536-5-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Bjorn Andersson 2021-03-11 16:33:17 -08:00
parent ac3f278420
commit 82ec0c290d
1 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/soc/qcom/wcnss_ctrl.c
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@ -200,6 +200,7 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
struct wcnss_download_nv_req *req;
const struct firmware *fw;
struct device *dev = wcnss->dev;
const char *nvbin = NVBIN_FILE;
const void *data;
ssize_t left;
int ret;
@ -208,10 +209,13 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
if (!req)
return -ENOMEM;
ret = request_firmware(&fw, NVBIN_FILE, dev);
ret = of_property_read_string(dev->of_node, "firmware-name", &nvbin);
if (ret < 0 && ret != -EINVAL)
goto free_req;
ret = request_firmware(&fw, nvbin, dev);
if (ret < 0) {
dev_err(dev, "Failed to load nv file %s: %d\n",
NVBIN_FILE, ret);
dev_err(dev, "Failed to load nv file %s: %d\n", nvbin, ret);
goto free_req;
}