From: abhinavk@codeaurora.org
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Rob Herring <robh+dt@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Kuogee Hsieh <khsieh@codeaurora.org>,
Tanmay Shah <tanmay@codeaurora.org>,
Chandan Uddaraju <chandanu@codeaurora.org>,
linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [Freedreno] [PATCH v3 3/5] drm/msm/dp: Refactor ioremap wrapper
Date: Tue, 05 Oct 2021 13:59:18 -0700 [thread overview]
Message-ID: <e5556fc02b53cfd613287bea47e12023@codeaurora.org> (raw)
In-Reply-To: <20211001174400.981707-4-bjorn.andersson@linaro.org>
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@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
> ---
>
> 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;
> };
next prev parent reply other threads:[~2021-10-05 20:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 17:43 [PATCH v3 0/5] drm/msm/dp: Allow variation in register regions Bjorn Andersson
2021-10-01 17:43 ` [PATCH v3 1/5] dt-bindings: msm/dp: Change reg definition Bjorn Andersson
2021-10-05 20:56 ` [Freedreno] " abhinavk
2021-10-01 17:43 ` [PATCH v3 2/5] drm/msm/dp: Use devres for ioremap() Bjorn Andersson
2021-10-01 17:43 ` [PATCH v3 3/5] drm/msm/dp: Refactor ioremap wrapper Bjorn Andersson
2021-10-05 1:04 ` Stephen Boyd
2021-10-05 1:19 ` Bjorn Andersson
2021-10-05 20:59 ` abhinavk [this message]
2021-10-01 17:43 ` [PATCH v3 4/5] drm/msm/dp: Store each subblock in the io region Bjorn Andersson
2021-10-05 21:04 ` [Freedreno] " abhinavk
2021-10-01 17:44 ` [PATCH v3 5/5] drm/msm/dp: Allow sub-regions to be specified in DT Bjorn Andersson
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