On Fri, Sep 10, 2021 at 03:09:41PM +0200, Maxime Ripard wrote:
> The new devm_drm_of_get_bridge removes most of the boilerplate we
> have to deal with. Let's switch to it.
>
> Signed-off-by: Maxime Ripard <max...@cerno.tech>
With the includes updated:
Acked-by: Sam Ravnborg <s...@ravnborg.org>
Sam
> ---
> drivers/gpu/drm/vc4/vc4_drv.c | 2 ++
> drivers/gpu/drm/vc4/vc4_dsi.c | 28 ++++------------------------
> 2 files changed, 6 insertions(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
> index 16abc3a3d601..96c526f1022e 100644
> --- a/drivers/gpu/drm/vc4/vc4_drv.c
> +++ b/drivers/gpu/drm/vc4/vc4_drv.c
> @@ -25,7 +25,9 @@
> #include <linux/device.h>
> #include <linux/dma-mapping.h>
> #include <linux/io.h>
> +#include <linux/i2c.h>
I fail to see why this include is needed?
> #include <linux/module.h>
> +#include <linux/of_graph.h>
I think this should be drm_bridge.h.
And drm_bridge.h hopefully pulls in what is needed.
> #include <linux/of_platform.h>
> #include <linux/platform_device.h>
> #include <linux/pm_runtime.h>
> diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
> index a185027911ce..a229da58962a 100644
> --- a/drivers/gpu/drm/vc4/vc4_dsi.c
> +++ b/drivers/gpu/drm/vc4/vc4_dsi.c
> @@ -1497,7 +1497,6 @@ static int vc4_dsi_bind(struct device *dev, struct
> device *master, void *data)
> struct drm_device *drm = dev_get_drvdata(master);
> struct vc4_dsi *dsi = dev_get_drvdata(dev);
> struct vc4_dsi_encoder *vc4_dsi_encoder;
> - struct drm_panel *panel;
> const struct of_device_id *match;
> dma_cap_mask_t dma_mask;
> int ret;
> @@ -1609,27 +1608,9 @@ static int vc4_dsi_bind(struct device *dev, struct
> device *master, void *data)
> return ret;
> }
>
> - ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
> - &panel, &dsi->bridge);
> - if (ret) {
> - /* If the bridge or panel pointed by dev->of_node is not
> - * enabled, just return 0 here so that we don't prevent the DRM
> - * dev from being registered. Of course that means the DSI
> - * encoder won't be exposed, but that's not a problem since
> - * nothing is connected to it.
> - */
> - if (ret == -ENODEV)
> - return 0;
> -
> - return ret;
> - }
> -
> - if (panel) {
> - dsi->bridge = devm_drm_panel_bridge_add_typed(dev, panel,
> -
> DRM_MODE_CONNECTOR_DSI);
> - if (IS_ERR(dsi->bridge))
> - return PTR_ERR(dsi->bridge);
> - }
> + dsi->bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
> + if (IS_ERR(dsi->bridge))
> + return PTR_ERR(dsi->bridge);
>
> /* The esc clock rate is supposed to always be 100Mhz. */
> ret = clk_set_rate(dsi->escape_clock, 100 * 1000000);
> @@ -1667,8 +1648,7 @@ static void vc4_dsi_unbind(struct device *dev, struct
> device *master,
> {
> struct vc4_dsi *dsi = dev_get_drvdata(dev);
>
> - if (dsi->bridge)
> - pm_runtime_disable(dev);
> + pm_runtime_disable(dev);
>
> /*
> * Restore the bridge_chain so the bridge detach procedure can happen
> --
> 2.31.1
