[PATCHv2 4/4] s5p-cec: add hpd-notifier support, move out of staging
Hans Verkuil
hverkuil at xs4all.nl
Mon Jan 2 14:19:07 UTC 2017
From: Hans Verkuil <hans.verkuil at cisco.com>
By using the HPD notifier framework there is no longer any reason
to manually set the physical address. This was the one blocking
issue that prevented this driver from going out of staging, so do
this move as well.
Update the bindings documenting the new hdmi phandle and
update exynos4.dtsi accordingly.
Tested with my Odroid U3.
Signed-off-by: Hans Verkuil <hans.verkuil at cisco.com>
Tested-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
.../devicetree/bindings/media/s5p-cec.txt | 2 ++
arch/arm/boot/dts/exynos4.dtsi | 1 +
drivers/media/platform/Kconfig | 18 +++++++++++
drivers/media/platform/Makefile | 1 +
.../media => media/platform}/s5p-cec/Makefile | 0
.../platform}/s5p-cec/exynos_hdmi_cec.h | 0
.../platform}/s5p-cec/exynos_hdmi_cecctrl.c | 0
.../media => media/platform}/s5p-cec/regs-cec.h | 0
.../media => media/platform}/s5p-cec/s5p_cec.c | 35 ++++++++++++++++++----
.../media => media/platform}/s5p-cec/s5p_cec.h | 3 ++
drivers/staging/media/Kconfig | 2 --
drivers/staging/media/Makefile | 1 -
drivers/staging/media/s5p-cec/Kconfig | 9 ------
drivers/staging/media/s5p-cec/TODO | 7 -----
14 files changed, 55 insertions(+), 24 deletions(-)
rename drivers/{staging/media => media/platform}/s5p-cec/Makefile (100%)
rename drivers/{staging/media => media/platform}/s5p-cec/exynos_hdmi_cec.h (100%)
rename drivers/{staging/media => media/platform}/s5p-cec/exynos_hdmi_cecctrl.c (100%)
rename drivers/{staging/media => media/platform}/s5p-cec/regs-cec.h (100%)
rename drivers/{staging/media => media/platform}/s5p-cec/s5p_cec.c (89%)
rename drivers/{staging/media => media/platform}/s5p-cec/s5p_cec.h (97%)
delete mode 100644 drivers/staging/media/s5p-cec/Kconfig
delete mode 100644 drivers/staging/media/s5p-cec/TODO
diff --git a/Documentation/devicetree/bindings/media/s5p-cec.txt b/Documentation/devicetree/bindings/media/s5p-cec.txt
index 925ab4d..710fc00 100644
--- a/Documentation/devicetree/bindings/media/s5p-cec.txt
+++ b/Documentation/devicetree/bindings/media/s5p-cec.txt
@@ -15,6 +15,7 @@ Required properties:
- clock-names : from common clock binding: must contain "hdmicec",
corresponding to entry in the clocks property.
- samsung,syscon-phandle - phandle to the PMU system controller
+ - samsung,hdmi-phandle - phandle to the HDMI controller
Example:
@@ -25,6 +26,7 @@ hdmicec: cec at 100B0000 {
clocks = <&clock CLK_HDMI_CEC>;
clock-names = "hdmicec";
samsung,syscon-phandle = <&pmu_system_controller>;
+ samsung,hdmi-phandle = <&hdmi>;
pinctrl-names = "default";
pinctrl-0 = <&hdmi_cec>;
status = "okay";
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index c64737b..51dfcbb 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -762,6 +762,7 @@
clocks = <&clock CLK_HDMI_CEC>;
clock-names = "hdmicec";
samsung,syscon-phandle = <&pmu_system_controller>;
+ samsung,hdmi-phandle = <&hdmi>;
pinctrl-names = "default";
pinctrl-0 = <&hdmi_cec>;
status = "disabled";
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index d944421..cab1637 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -392,6 +392,24 @@ config VIDEO_TI_SC
config VIDEO_TI_CSC
tristate
+menuconfig V4L_CEC_DRIVERS
+ bool "Platform HDMI CEC drivers"
+ depends on MEDIA_CEC_SUPPORT
+
+if V4L_CEC_DRIVERS
+
+config VIDEO_SAMSUNG_S5P_CEC
+ tristate "Samsung S5P CEC driver"
+ depends on VIDEO_DEV && MEDIA_CEC_SUPPORT && (PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST)
+ select HPD_NOTIFIERS
+ ---help---
+ This is a driver for Samsung S5P HDMI CEC interface. It uses the
+ generic CEC framework interface.
+ CEC bus is present in the HDMI connector and enables communication
+ between compatible devices.
+
+endif #V4L_CEC_DRIVERS
+
menuconfig V4L_TEST_DRIVERS
bool "Media test drivers"
depends on MEDIA_CAMERA_SUPPORT
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 5b3cb27..ad3bf22 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) += s5p-jpeg/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC) += s5p-mfc/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_G2D) += s5p-g2d/
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_CEC) += s5p-cec/
obj-$(CONFIG_VIDEO_SAMSUNG_EXYNOS_GSC) += exynos-gsc/
obj-$(CONFIG_VIDEO_STI_BDISP) += sti/bdisp/
diff --git a/drivers/staging/media/s5p-cec/Makefile b/drivers/media/platform/s5p-cec/Makefile
similarity index 100%
rename from drivers/staging/media/s5p-cec/Makefile
rename to drivers/media/platform/s5p-cec/Makefile
diff --git a/drivers/staging/media/s5p-cec/exynos_hdmi_cec.h b/drivers/media/platform/s5p-cec/exynos_hdmi_cec.h
similarity index 100%
rename from drivers/staging/media/s5p-cec/exynos_hdmi_cec.h
rename to drivers/media/platform/s5p-cec/exynos_hdmi_cec.h
diff --git a/drivers/staging/media/s5p-cec/exynos_hdmi_cecctrl.c b/drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c
similarity index 100%
rename from drivers/staging/media/s5p-cec/exynos_hdmi_cecctrl.c
rename to drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c
diff --git a/drivers/staging/media/s5p-cec/regs-cec.h b/drivers/media/platform/s5p-cec/regs-cec.h
similarity index 100%
rename from drivers/staging/media/s5p-cec/regs-cec.h
rename to drivers/media/platform/s5p-cec/regs-cec.h
diff --git a/drivers/staging/media/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c
similarity index 89%
rename from drivers/staging/media/s5p-cec/s5p_cec.c
rename to drivers/media/platform/s5p-cec/s5p_cec.c
index 2a07968..2014f79 100644
--- a/drivers/staging/media/s5p-cec/s5p_cec.c
+++ b/drivers/media/platform/s5p-cec/s5p_cec.c
@@ -14,15 +14,18 @@
*/
#include <linux/clk.h>
+#include <linux/hpd-notifier.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
+#include <media/cec-edid.h>
#include <media/cec.h>
#include "exynos_hdmi_cec.h"
@@ -167,10 +170,22 @@ static const struct cec_adap_ops s5p_cec_adap_ops = {
static int s5p_cec_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct device_node *np;
+ struct platform_device *hdmi_dev;
struct resource *res;
struct s5p_cec_dev *cec;
int ret;
+ np = of_parse_phandle(pdev->dev.of_node, "samsung,hdmi-phandle", 0);
+
+ if (!np) {
+ dev_err(&pdev->dev, "Failed to find hdmi node in device tree\n");
+ return -ENODEV;
+ }
+ hdmi_dev = of_find_device_by_node(np);
+ if (hdmi_dev == NULL)
+ return -EPROBE_DEFER;
+
cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL);
if (!cec)
return -ENOMEM;
@@ -200,24 +215,33 @@ static int s5p_cec_probe(struct platform_device *pdev)
if (IS_ERR(cec->reg))
return PTR_ERR(cec->reg);
+ cec->notifier = hpd_notifier_get(&hdmi_dev->dev);
+ if (cec->notifier == NULL)
+ return -ENOMEM;
+
cec->adap = cec_allocate_adapter(&s5p_cec_adap_ops, cec,
CEC_NAME,
- CEC_CAP_PHYS_ADDR | CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
+ CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
CEC_CAP_PASSTHROUGH | CEC_CAP_RC, 1);
ret = PTR_ERR_OR_ZERO(cec->adap);
if (ret)
return ret;
+
ret = cec_register_adapter(cec->adap, &pdev->dev);
- if (ret) {
- cec_delete_adapter(cec->adap);
- return ret;
- }
+ if (ret)
+ goto err_delete_adapter;
+
+ cec_register_hpd_notifier(cec->adap, cec->notifier);
platform_set_drvdata(pdev, cec);
pm_runtime_enable(dev);
dev_dbg(dev, "successfuly probed\n");
return 0;
+
+err_delete_adapter:
+ cec_delete_adapter(cec->adap);
+ return ret;
}
static int s5p_cec_remove(struct platform_device *pdev)
@@ -225,6 +249,7 @@ static int s5p_cec_remove(struct platform_device *pdev)
struct s5p_cec_dev *cec = platform_get_drvdata(pdev);
cec_unregister_adapter(cec->adap);
+ hpd_notifier_put(cec->notifier);
pm_runtime_disable(&pdev->dev);
return 0;
}
diff --git a/drivers/staging/media/s5p-cec/s5p_cec.h b/drivers/media/platform/s5p-cec/s5p_cec.h
similarity index 97%
rename from drivers/staging/media/s5p-cec/s5p_cec.h
rename to drivers/media/platform/s5p-cec/s5p_cec.h
index 03732c1..a6f5af6 100644
--- a/drivers/staging/media/s5p-cec/s5p_cec.h
+++ b/drivers/media/platform/s5p-cec/s5p_cec.h
@@ -59,12 +59,15 @@ enum cec_state {
STATE_ERROR
};
+struct hpd_notifier;
+
struct s5p_cec_dev {
struct cec_adapter *adap;
struct clk *clk;
struct device *dev;
struct mutex lock;
struct regmap *pmu;
+ struct hpd_notifier *notifier;
int irq;
void __iomem *reg;
diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index ffb8fa7..1b7804c 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -27,8 +27,6 @@ source "drivers/staging/media/davinci_vpfe/Kconfig"
source "drivers/staging/media/omap4iss/Kconfig"
-source "drivers/staging/media/s5p-cec/Kconfig"
-
# Keep LIRC at the end, as it has sub-menus
source "drivers/staging/media/lirc/Kconfig"
diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
index a28e82c..e11afbf 100644
--- a/drivers/staging/media/Makefile
+++ b/drivers/staging/media/Makefile
@@ -1,5 +1,4 @@
obj-$(CONFIG_I2C_BCM2048) += bcm2048/
-obj-$(CONFIG_VIDEO_SAMSUNG_S5P_CEC) += s5p-cec/
obj-$(CONFIG_DVB_CXD2099) += cxd2099/
obj-$(CONFIG_LIRC_STAGING) += lirc/
obj-$(CONFIG_VIDEO_DM365_VPFE) += davinci_vpfe/
diff --git a/drivers/staging/media/s5p-cec/Kconfig b/drivers/staging/media/s5p-cec/Kconfig
deleted file mode 100644
index ddfd955..0000000
--- a/drivers/staging/media/s5p-cec/Kconfig
+++ /dev/null
@@ -1,9 +0,0 @@
-config VIDEO_SAMSUNG_S5P_CEC
- tristate "Samsung S5P CEC driver"
- depends on VIDEO_DEV && MEDIA_CEC_SUPPORT && (PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST)
- ---help---
- This is a driver for Samsung S5P HDMI CEC interface. It uses the
- generic CEC framework interface.
- CEC bus is present in the HDMI connector and enables communication
- between compatible devices.
-
diff --git a/drivers/staging/media/s5p-cec/TODO b/drivers/staging/media/s5p-cec/TODO
deleted file mode 100644
index 64f21ba..0000000
--- a/drivers/staging/media/s5p-cec/TODO
+++ /dev/null
@@ -1,7 +0,0 @@
-This driver requires that userspace sets the physical address.
-However, this should be passed on from the corresponding
-Samsung HDMI driver.
-
-We have to wait until the HDMI notifier framework has been merged
-in order to handle this gracefully, until that time this driver
-has to remain in staging.
--
2.8.1
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