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Subject[PATCH v1 06/21] drm/mediatek: add disp config and mm 26mhz clock into mutex device
Date
there are 2 more clock need enable for display.
parser these clock when mutex device probe,
enable and disable when mutex on/off

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 49 ++++++++++++++++++++++++++++------
1 file changed, 41 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index 60788c1..de618a1 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -118,7 +118,7 @@ struct mtk_ddp_data {

struct mtk_ddp {
struct device *dev;
- struct clk *clk;
+ struct clk *clk[3];
void __iomem *regs;
struct mtk_disp_mutex mutex[10];
const struct mtk_ddp_data *data;
@@ -257,14 +257,39 @@ int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex)
{
struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
mutex[mutex->id]);
- return clk_prepare_enable(ddp->clk);
+ int ret;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
+ if (IS_ERR(ddp->clk[i]))
+ continue;
+ ret = clk_prepare_enable(ddp->clk[i]);
+ if (ret) {
+ pr_err("failed to enable clock, err %d. i:%d\n",
+ ret, i);
+ goto err;
+ }
+ }
+
+ return 0;
+
+err:
+ while (--i >= 0)
+ clk_disable_unprepare(ddp->clk[i]);
+ return ret;
}

void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex)
{
struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
mutex[mutex->id]);
- clk_disable_unprepare(ddp->clk);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
+ if (IS_ERR(ddp->clk[i]))
+ continue;
+ clk_disable_unprepare(ddp->clk[i]);
+ }
}

void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
@@ -415,11 +440,19 @@ static int mtk_ddp_probe(struct platform_device *pdev)
ddp->data = of_device_get_match_data(dev);

if (!ddp->data->no_clk) {
- ddp->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(ddp->clk)) {
- if (PTR_ERR(ddp->clk) != -EPROBE_DEFER)
- dev_err(dev, "Failed to get clock\n");
- return PTR_ERR(ddp->clk);
+ int ret;
+
+ for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
+ ddp->clk[i] = of_clk_get(dev->of_node, i);
+
+ if (IS_ERR(ddp->clk[i])) {
+ ret = PTR_ERR(ddp->clk[i]);
+ if (ret != EPROBE_DEFER)
+ dev_err(dev, "Failed to get clock %d\n",
+ ret);
+
+ return ret;
+ }
}
}

--
1.8.1.1.dirty
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