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Subject[PATCH v4 02/15] drm: bridge/dw_hdmi: wrap irq control in fucntions
Date
Wrap irq control in functions, and then we can call in
dw_hdmi_bind/dw_hdmi_unbind/dw_hdmi_resume/dw_hdmi_suspend
functions.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v4: None
Changes in v3:
- Wrap irq control in fucntions

Changes in v2: None

drivers/gpu/drm/bridge/dw_hdmi.c | 75 ++++++++++++++++++++--------------------
1 file changed, 37 insertions(+), 38 deletions(-)

diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index dc314f5..08f10da 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -1330,6 +1330,40 @@ static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi)
hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
}

+static void hdmi_mute_interrupts(struct dw_hdmi *hdmi)
+{
+ u8 ih_mute;
+
+ /* Disable all interrupts */
+ hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
+
+ /* Disable top level interrupt bits in HDMI block */
+ ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) |
+ HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
+ HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;
+
+ hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
+}
+
+static void hdmi_unmute_interrupts(struct dw_hdmi *hdmi)
+{
+ initialize_hdmi_ih_mutes(hdmi);
+
+ /*
+ * Configure registers related to HDMI interrupt
+ * generation before registering IRQ.
+ */
+ hdmi_writeb(hdmi, HDMI_PHY_HPD, HDMI_PHY_POL0);
+
+ /* Clear Hotplug interrupts */
+ hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0);
+
+ dw_hdmi_fb_registered(hdmi);
+
+ /* Unmute interrupts */
+ hdmi_writeb(hdmi, ~HDMI_IH_PHY_STAT0_HPD, HDMI_IH_MUTE_PHY_STAT0);
+}
+
static void dw_hdmi_poweron(struct dw_hdmi *hdmi)
{
dw_hdmi_setup(hdmi, &hdmi->previous_mode);
@@ -1650,25 +1684,11 @@ int dw_hdmi_bind(struct device *dev, struct device *master,
*/
hdmi_init_clk_regenerator(hdmi);

- /*
- * Configure registers related to HDMI interrupt
- * generation before registering IRQ.
- */
- hdmi_writeb(hdmi, HDMI_PHY_HPD, HDMI_PHY_POL0);
-
- /* Clear Hotplug interrupts */
- hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0);
-
- ret = dw_hdmi_fb_registered(hdmi);
- if (ret)
- goto err_iahb;
-
ret = dw_hdmi_register(drm, hdmi);
if (ret)
goto err_iahb;

- /* Unmute interrupts */
- hdmi_writeb(hdmi, ~HDMI_IH_PHY_STAT0_HPD, HDMI_IH_MUTE_PHY_STAT0);
+ hdmi_unmute_interrupts(hdmi);

dev_set_drvdata(dev, hdmi);

@@ -1702,17 +1722,8 @@ EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
int dw_hdmi_suspend(struct device *dev)
{
struct dw_hdmi *hdmi = dev_get_drvdata(dev);
- u8 ih_mute;
-
- /* Disable all interrupts */
- hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
-
- /* Disable top level interrupt bits in HDMI block */
- ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) |
- HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
- HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;

- hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
+ hdmi_mute_interrupts(hdmi);

return 0;
}
@@ -1722,19 +1733,7 @@ int dw_hdmi_resume(struct device *dev)
{
struct dw_hdmi *hdmi = dev_get_drvdata(dev);

- /*
- * Configure registers related to HDMI interrupt
- * generation before registering IRQ.
- */
- hdmi_writeb(hdmi, HDMI_PHY_HPD, HDMI_PHY_POL0);
-
- /* Clear Hotplug interrupts */
- hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0);
-
- dw_hdmi_fb_registered(hdmi);
-
- /* Unmute interrupts */
- hdmi_writeb(hdmi, ~HDMI_IH_PHY_STAT0_HPD, HDMI_IH_MUTE_PHY_STAT0);
+ hdmi_unmute_interrupts(hdmi);

return 0;
}
--
2.1.2



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