Thread (28 messages) 28 messages, 2 authors, 2016-09-14

Re: [PATCH v7 7/9] drm/mediatek: add dsi transfer function

From: CK Hu <hidden>
Date: 2016-09-07 02:34:06
Also in: dri-devel, linux-arm-kernel, lkml

Hi, YT:

On Fri, 2016-09-02 at 19:24 +0800, YT Shen wrote:
From: shaoming chen <redacted>

add dsi read/write commands for transfer function

Signed-off-by: shaoming chen <redacted>
---
 drivers/gpu/drm/mediatek/mtk_dsi.c | 188 +++++++++++++++++++++++++++++++++++++
 1 file changed, 188 insertions(+)
[snip...]
quoted hunk ↗ jump to hunk
 
+static void mtk_dsi_irq_data_clear(struct mtk_dsi *dsi, u32 irq_bit)
+{
+	dsi->irq_data &= ~irq_bit;
+}
+
[snip...]
quoted hunk ↗ jump to hunk
+
+static s32 mtk_dsi_wait_for_irq_done(struct mtk_dsi *dsi, u32 irq_flag,
+				     unsigned int timeout)
+{
+	s32 ret = 0;
+	unsigned long jiffies = msecs_to_jiffies(timeout);
+
+	ret = wait_event_interruptible_timeout(_dsi_irq_wait_queue,
+					       dsi->irq_data & irq_flag,
+					       jiffies);
+	if (ret == 0) {
+		dev_info(dsi->dev, "Wait DSI IRQ(0x%08x) Timeout\n", irq_flag);
+
+		mtk_dsi_enable(dsi);
+		mtk_dsi_reset_engine(dsi);
+	}
+
+	return ret;
+}
I think mtk_dsi_irq_data_clear() and mtk_dsi_wait_for_irq_done() should
be moved to the 6th patch [1] of this series because these two functions
deal the irq control.


[1] https://patchwork.kernel.org/patch/9310819/


Regards,
CK

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