[PATCH v4 02/27] drm/bridge: ti-sn65dsi86: Simplify refclk handling

Douglas Anderson
2021-04-16T22:41:06Z

The clock framework makes it simple to deal with an optional clock.
You can call clk_get_optional() and if the clock isn't specified it'll
just return NULL without complaint. It's valid to pass NULL to
enable/disable/prepare/unprepare. Let's make use of this to simplify
things a tiny bit.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---

(no changes since v2)

Changes in v2:
- Removed 2nd paragraph in commit message.

drivers/gpu/drm/bridge/ti-sn65dsi86.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 88df4dd0f39d..96fe8f2c0ea9 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -1275,14 +1275,9 @@ static int ti_sn_bridge_probe(struct i2c_client *client,
return ret;
}

- pdata->refclk = devm_clk_get(pdata->dev, "refclk");
- if (IS_ERR(pdata->refclk)) {
- ret = PTR_ERR(pdata->refclk);
- if (ret == -EPROBE_DEFER)
- return ret;
- DRM_DEBUG_KMS("refclk not found\n");
- pdata->refclk = NULL;
- }
+ pdata->refclk = devm_clk_get_optional(pdata->dev, "refclk");
+ if (IS_ERR(pdata->refclk))
+ return PTR_ERR(pdata->refclk);

ret = ti_sn_bridge_parse_dsi_host(pdata);
if (ret)
--
2.31.1.368.gbe11c130af-goog