On 2021-10-01 10:43, Bjorn Andersson wrote:
In order to deal with multiple memory ranges in the following commit
change the ioremap wrapper to not poke directly into the dss_io_data
struct.
While at it, devm_ioremap_resource() already prints useful error
messages on failure, so omit the unnecessary prints from the caller.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Reviewed-by: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>
---
Changes since v2:
- Switched to devm_platform_get_and_ioremap_resource()
drivers/gpu/drm/msm/dp/dp_parser.c | 35 ++++++++++--------------------
drivers/gpu/drm/msm/dp/dp_parser.h | 2 +-
2 files changed, 12 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c
b/drivers/gpu/drm/msm/dp/dp_parser.c
index c064ced78278..c05ba1990218 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.c
+++ b/drivers/gpu/drm/msm/dp/dp_parser.c
@@ -19,40 +19,27 @@ static const struct dp_regulator_cfg
sdm845_dp_reg_cfg = {
},
};
-static int msm_dss_ioremap(struct platform_device *pdev,
- struct dss_io_data *io_data)
+static void __iomem *dp_ioremap(struct platform_device *pdev, int
idx, size_t *len)
{
- struct resource *res = NULL;
+ struct resource *res;
+ void __iomem *base;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- DRM_ERROR("%pS->%s: msm_dss_get_res failed\n",
- __builtin_return_address(0), __func__);
- return -ENODEV;
- }
-
- io_data->len = (u32)resource_size(res);
- io_data->base = devm_ioremap(&pdev->dev, res->start, io_data->len);
- if (!io_data->base) {
- DRM_ERROR("%pS->%s: ioremap failed\n",
- __builtin_return_address(0), __func__);
- return -EIO;
- }
+ base = devm_platform_get_and_ioremap_resource(pdev, idx, &res);
+ if (!IS_ERR(base))
+ *len = resource_size(res);
- return 0;
+ return base;
}
static int dp_parser_ctrl_res(struct dp_parser *parser)
{
- int rc = 0;
struct platform_device *pdev = parser->pdev;
struct dp_io *io = &parser->io;
+ struct dss_io_data *dss = &io->dp_controller;
- rc = msm_dss_ioremap(pdev, &io->dp_controller);
- if (rc) {
- DRM_ERROR("unable to remap dp io resources, rc=%d\n", rc);
- return rc;
- }
+ dss->base = dp_ioremap(pdev, 0, &dss->len);
+ if (IS_ERR(dss->base))
+ return PTR_ERR(dss->base);
io->phy = devm_phy_get(&pdev->dev, "dp");
if (IS_ERR(io->phy))
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.h
b/drivers/gpu/drm/msm/dp/dp_parser.h
index 34b49628bbaf..dc62e70b1640 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.h
+++ b/drivers/gpu/drm/msm/dp/dp_parser.h
@@ -26,7 +26,7 @@ enum dp_pm_type {
};
struct dss_io_data {
- u32 len;
+ size_t len;
void __iomem *base;
};
