[PATCH v4--to=ulrich.hecht+renesas@xxxxxxxxx 4/5] drm/mediatek: Add support for mmsys through a pdev
From: matthias . bgg
Date: Tue Jul 17 2018 - 18:00:30 EST
From: Matthias Brugger <mbrugger@xxxxxxxx>
The MMSYS subsystem includes clocks and drm components.
This patch adds an initailization path through a platform device
for the clock part, so that both drivers get probed from the same
device tree compatible.
Signed-off-by: Matthias Brugger <mbrugger@xxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 18 ++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 ++
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index dd249cf5121e..c946aea722e5 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -173,6 +173,7 @@ static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
.ext_path = mt2701_mtk_ddp_ext,
.ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
.shadow_register = true,
+ .clk_drv_name = "clk-mt2701-mm",
};
static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
@@ -180,6 +181,7 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
.main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
.ext_path = mt8173_mtk_ddp_ext,
.ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
+ .clk_drv_name = "clk-mt8173-mm",
};
static int mtk_drm_kms_init(struct drm_device *drm)
@@ -411,6 +413,19 @@ static int mtk_drm_probe(struct platform_device *pdev)
if (IS_ERR(private->config_regs))
return PTR_ERR(private->config_regs);
+ if (private->data->clk_drv_name) {
+ private->clk_dev = platform_device_register_data(dev,
+ private->data->clk_drv_name, -1,
+ NULL, 0);
+
+ if (IS_ERR(private->clk_dev)) {
+ pr_err("failed to register %s platform device\n",
+ private->data->clk_drv_name);
+
+ return PTR_ERR(private->clk_dev);
+ }
+ }
+
/* Iterate over sibling DISP function blocks */
for_each_child_of_node(dev->of_node->parent, node) {
const struct of_device_id *of_id;
@@ -515,6 +530,9 @@ static int mtk_drm_remove(struct platform_device *pdev)
for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
of_node_put(private->comp_node[i]);
+ if (private->clk_dev)
+ platform_device_unregister(private->clk_dev);
+
return 0;
}
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index 86cec19193c4..200eee5de419 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -34,11 +34,13 @@ struct mtk_mmsys_driver_data {
const enum mtk_ddp_comp_id *ext_path;
unsigned int ext_len;
bool shadow_register;
+ const char *clk_drv_name;
};
struct mtk_drm_private {
struct drm_device *drm;
struct device *dma_dev;
+ struct platform_device *clk_dev;
unsigned int num_pipes;
--
2.17.1