[PATCH 07/10] drm/vc4: dsi: Switch to drm_of_get_next

Maxime Ripard
2021-07-20T13:54:25Z

The new drm_of_get_next removes most of the boilerplate we have to deal
with. Let's switch to it.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
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 73335feb712f..ff056ee8bc4b 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>
#include <linux/module.h>
+#include <linux/of_graph.h>
#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 6dfcbd9e234e..f51ce8db0f4e 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -1489,7 +1489,6 @@ 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;
@@ -1601,27 +1600,9 @@ 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_next(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);
@@ -1661,8 +1642,7 @@ 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