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| author | Philipp Stanner <pstanner@redhat.com> | 2024-01-24 12:19:04 +0100 |
|---|---|---|
| committer | Laurentiu Palcu <laurentiu.palcu@oss.nxp.com> | 2024-02-02 15:34:40 +0200 |
| commit | 90393c9b5408cafededdee2f34082c4c3c671901 (patch) | |
| tree | d87911f42ebb82d068707547a43398d762e02d65 /drivers/gpu/drm/imx | |
| parent | 041261ac4c365e03b07427569d6735f8adfd21c8 (diff) | |
| download | linux-90393c9b5408cafededdee2f34082c4c3c671901.tar.gz linux-90393c9b5408cafededdee2f34082c4c3c671901.tar.bz2 linux-90393c9b5408cafededdee2f34082c4c3c671901.zip | |
drm/imx/dcss: request memory region
The driver's memory regions are currently just ioremap()ed, but not
reserved through a request. That's not a bug, but having the request is
a little more robust.
Implement the region-request through the corresponding managed
devres-function.
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240124111904.18261-3-pstanner@redhat.com
Diffstat (limited to 'drivers/gpu/drm/imx')
| -rw-r--r-- | drivers/gpu/drm/imx/dcss/dcss-dev.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imx/dcss/dcss-dev.c b/drivers/gpu/drm/imx/dcss/dcss-dev.c index 4f3af0dfb344..d448bf1c205e 100644 --- a/drivers/gpu/drm/imx/dcss/dcss-dev.c +++ b/drivers/gpu/drm/imx/dcss/dcss-dev.c @@ -170,6 +170,7 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output) struct resource *res; struct dcss_dev *dcss; const struct dcss_type_data *devtype; + resource_size_t res_len; devtype = of_device_get_match_data(dev); if (!devtype) { @@ -183,6 +184,12 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output) return ERR_PTR(-EINVAL); } + res_len = res->end - res->start; + if (!devm_request_mem_region(dev, res->start, res_len, "dcss")) { + dev_err(dev, "cannot request memory region\n"); + return ERR_PTR(-EBUSY); + } + dcss = kzalloc(sizeof(*dcss), GFP_KERNEL); if (!dcss) return ERR_PTR(-ENOMEM); |