From: Mythri P K <mythripk@xxxxxx>
Add support for DSS_HDMI interrupt handling in HDMI driver
by registering for the same. This is the path for many necessary HDMI
interrupts such as PLL lock/unlock, PHY connect/disconnet, video frame
done etc.
Signed-off-by: Mythri P K <mythripk@xxxxxx>
---
drivers/video/omap2/dss/dss_features.c | 1 +
drivers/video/omap2/dss/hdmi.c | 21 +++++++++++++++++++++
drivers/video/omap2/dss/ti_hdmi.h | 3 +++
drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c | 13 +++++++++++++
4 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index ce14aa6..29c5548 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -566,6 +566,7 @@ static const struct ti_hdmi_ip_ops omap4_hdmi_functions = {
.dump_core = ti_hdmi_4xxx_core_dump,
.dump_pll = ti_hdmi_4xxx_pll_dump,
.dump_phy = ti_hdmi_4xxx_phy_dump,
+ .irq_handle = ti_hdmi_4xxx_intr_handler,
#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \
defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE)
.audio_enable = ti_hdmi_4xxx_wp_audio_enable,
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index c4b4f69..14e90b5 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -67,6 +67,8 @@ static struct {
struct platform_device *pdev;
struct hdmi_ip_data ip_data;
+ int irq;
+ spinlock_t irq_lock;
struct clk *sys_clk;
} hdmi;
@@ -790,6 +792,19 @@ static void hdmi_put_clocks(void)
clk_put(hdmi.sys_clk);
}
+static irqreturn_t hdmi_irq_handler(int irq, void *arg)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&hdmi.irq_lock, flags);
+
+ hdmi.ip_data.ops->irq_handle(&hdmi.ip_data);
+
+ spin_unlock_irqrestore(&hdmi.irq_lock, flags);
+
+ return IRQ_HANDLED;
+}
+
/* HDMI HW IP initialisation */
static int omapdss_hdmihw_probe(struct platform_device *pdev)
{
@@ -823,6 +838,10 @@ static int omapdss_hdmihw_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
+ hdmi.irq = platform_get_irq(pdev, 0);
+ r = request_threaded_irq(hdmi.irq, NULL, hdmi_irq_handler, 0,
+ "OMAP HDMI", (void *)0);
+
hdmi.ip_data.core_sys_offset = HDMI_CORE_SYS;
hdmi.ip_data.core_av_offset = HDMI_CORE_AV;
hdmi.ip_data.pll_offset = HDMI_PLLCTRL;
@@ -853,6 +872,8 @@ static int omapdss_hdmihw_remove(struct platform_device *pdev)
snd_soc_unregister_codec(&pdev->dev);
#endif
+ free_irq(hdmi.irq, NULL);
+
pm_runtime_disable(&pdev->dev);
hdmi_put_clocks();
diff --git a/drivers/video/omap2/dss/ti_hdmi.h b/drivers/video/omap2/dss/ti_hdmi.h
index 6d65b3b..5e7e0da 100644
--- a/drivers/video/omap2/dss/ti_hdmi.h
+++ b/drivers/video/omap2/dss/ti_hdmi.h
@@ -122,6 +122,8 @@ struct ti_hdmi_ip_ops {
void (*dump_phy)(struct hdmi_ip_data *ip_data, struct seq_file *s);
+ void (*irq_handle)(struct hdmi_ip_data *ip_data);
+
#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \
defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE)
void (*audio_enable)(struct hdmi_ip_data *ip_data, bool start);
@@ -197,6 +199,7 @@ void ti_hdmi_4xxx_wp_dump(struct hdmi_ip_data *ip_data, struct seq_file *s);
void ti_hdmi_4xxx_pll_dump(struct hdmi_ip_data *ip_data, struct seq_file *s);
void ti_hdmi_4xxx_core_dump(struct hdmi_ip_data *ip_data, struct seq_file *s);
void ti_hdmi_4xxx_phy_dump(struct hdmi_ip_data *ip_data, struct seq_file *s);
+void ti_hdmi_4xxx_intr_handler(struct hdmi_ip_data *ip_data);
#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \
defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE)
void ti_hdmi_4xxx_wp_audio_enable(struct hdmi_ip_data *ip_data, bool enable);
diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
index 5272f49..31d9927 100644
--- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
+++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
@@ -312,6 +312,19 @@ static irqreturn_t hpd_irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
+/* Interrupt handler */
+void ti_hdmi_4xxx_intr_handler(struct hdmi_ip_data *ip_data)
+{
+ u32 val;
+
+ val = hdmi_read_reg(hdmi_wp_base(ip_data), HDMI_WP_IRQSTATUS);
+ /* Ack other interrupts if any */
+ hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_IRQSTATUS, val);
+ /* flush posted write */
+ hdmi_read_reg(hdmi_wp_base(ip_data), HDMI_WP_IRQSTATUS);
+
+}
+
int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data)
{
u16 r = 0;
--
1.7.5.4
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