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omapdrm: hdmi4: hook up the HDMI CEC support 

Hook up the HDMI CEC support in the hdmi4 driver.

It add the CEC irq handler, the CEC (un)init calls and tells the CEC
implementation when the physical address changes.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
hifive-unleashed-5.1
Hans Verkuil 2017-08-02 10:54:07 +02:00 committed by Tomi Valkeinen
parent 8d7f934df8
commit 1897e1a394
3 changed files with 31 additions and 1 deletions
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8
drivers/gpu/drm/omapdrm/dss/Kconfig
View File

@ -65,6 +65,14 @@ config OMAP4_DSS_HDMI
help
HDMI support for OMAP4 based SoCs.
config OMAP4_DSS_HDMI_CEC
bool "Enable HDMI CEC support for OMAP4"
depends on OMAP4_DSS_HDMI
select CEC_CORE
default y
---help---
When selected the HDMI transmitter will support the CEC feature.
config OMAP5_DSS_HDMI
bool "HDMI support for OMAP5"
default n

1
drivers/gpu/drm/omapdrm/dss/Makefile
View File

@ -14,5 +14,6 @@ omapdss-$(CONFIG_OMAP2_DSS_DSI) += dsi.o
omapdss-$(CONFIG_OMAP2_DSS_HDMI_COMMON) += hdmi_common.o hdmi_wp.o hdmi_pll.o \
hdmi_phy.o
omapdss-$(CONFIG_OMAP4_DSS_HDMI) += hdmi4.o hdmi4_core.o
omapdss-$(CONFIG_OMAP4_DSS_HDMI_CEC) += hdmi4_cec.o
omapdss-$(CONFIG_OMAP5_DSS_HDMI) += hdmi5.o hdmi5_core.o
ccflags-$(CONFIG_OMAP2_DSS_DEBUG) += -DDEBUG

23
drivers/gpu/drm/omapdrm/dss/hdmi4.c
View File

@ -36,9 +36,11 @@
#include <linux/of.h>
#include <linux/of_graph.h>
#include <sound/omap-hdmi-audio.h>
#include <media/cec.h>
#include "omapdss.h"
#include "hdmi4_core.h"
#include "hdmi4_cec.h"
#include "dss.h"
#include "hdmi.h"
@ -96,6 +98,13 @@ static irqreturn_t hdmi_irq_handler(int irq, void *data)
} else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
}
if (irqstatus & HDMI_IRQ_CORE) {
u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
if (intr4 & 8)
hdmi4_cec_irq(&hdmi->core);
}
return IRQ_HANDLED;
}
@ -392,6 +401,8 @@ static void hdmi_display_disable(struct omap_dss_device *dssdev)
DSSDBG("Enter hdmi_display_disable\n");
hdmi4_cec_set_phys_addr(&hdmi.core, CEC_PHYS_ADDR_INVALID);
mutex_lock(&hdmi.lock);
spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
@ -492,7 +503,11 @@ static int hdmi_read_edid(struct omap_dss_device *dssdev,
}
r = read_edid(edid, len);
if (r >= 256)
hdmi4_cec_set_phys_addr(&hdmi.core,
cec_get_edid_phys_addr(edid, r, NULL));
else
hdmi4_cec_set_phys_addr(&hdmi.core, CEC_PHYS_ADDR_INVALID);
if (need_enable)
hdmi4_core_disable(dssdev);
@ -726,6 +741,10 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data)
if (r)
goto err;
r = hdmi4_cec_init(pdev, &hdmi.core, &hdmi.wp);
if (r)
goto err;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
DSSERR("platform_get_irq failed\n");
@ -770,6 +789,8 @@ static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
hdmi_uninit_output(pdev);
hdmi4_cec_uninit(&hdmi.core);
hdmi_pll_uninit(&hdmi.pll);
pm_runtime_disable(&pdev->dev);