linux-kernel - [PATCH] drm: lima: Add support for multiple reset lines

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Date:   Tue,  1 Oct 2019 18:29:27 +0000
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     Peter Griffin <peter.griffin@...aro.org>,
        Qiang Yu <yuq825@...il.com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, lima@...ts.freedesktop.org,
        John Stultz <john.stultz@...aro.org>
Subject: [PATCH] drm: lima: Add support for multiple reset lines

From: Peter Griffin <peter.griffin@...aro.org>

Some SoCs like HiKey have 2 reset lines, so update
to use the devm_reset_control_array_* variant of the
API so that multiple resets can be specified in DT.

Cc: Qiang Yu <yuq825@...il.com>
Cc: David Airlie <airlied@...ux.ie>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org
Cc: lima@...ts.freedesktop.org
Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/gpu/drm/lima/lima_device.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/lima/lima_device.c b/drivers/gpu/drm/lima/lima_device.c
index d86b8d81a483..e3e0ca11382e 100644
--- a/drivers/gpu/drm/lima/lima_device.c
+++ b/drivers/gpu/drm/lima/lima_device.c
@@ -105,7 +105,8 @@ static int lima_clk_init(struct lima_device *dev)
 	if (err)
 		goto error_out0;
 
-	dev->reset = devm_reset_control_get_optional(dev->dev, NULL);
+	dev->reset = devm_reset_control_array_get_optional_shared(dev->dev);
+
 	if (IS_ERR(dev->reset)) {
 		err = PTR_ERR(dev->reset);
 		if (err != -EPROBE_DEFER)
-- 
2.17.1