[media] cec: Kconfig cleanup

The Kconfig options for the CEC subsystem were a bit messy. In
addition there were two cec sources (cec-edid.c and cec-notifier.c)
that were outside of the media/cec directory, which was weird.

Move those sources to media/cec as well.

The cec-edid and cec-notifier functionality is now part of the cec
module and these are no longer separate modules.

Also remove the MEDIA_CEC_EDID config option and include it with the
main CEC config option (which defined CEC_EDID anyway).

Added static inlines to cec-edid.h for dummy functions when CEC_CORE
isn't defined.

CEC drivers should now depend on CEC_CORE.

CEC drivers that need the cec-notifier functionality must explicitly
select CEC_NOTIFIER.

The s5p-cec and stih-cec drivers depended on VIDEO_DEV instead of
CEC_CORE, fix that as well.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

14 files changed, 91 insertions, 79 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 6919a495bdad..cf0101544a08 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3075,8 +3075,6 @@ S:	Supported
 F:      Documentation/media/kapi/cec-core.rst
 F:      Documentation/media/uapi/cec
 F:      drivers/media/cec/
-F:      drivers/media/cec-edid.c
-F:      drivers/media/cec-notifier.c
 F:      drivers/media/rc/keymaps/rc-cec.c
 F:      include/media/cec.h
 F:      include/media/cec-edid.h
diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig
index 9e9ded44e8a8..b72edd27f880 100644
--- a/drivers/media/Kconfig
+++ b/drivers/media/Kconfig
@@ -81,27 +81,15 @@ config MEDIA_RC_SUPPORT
           Say Y when you have a TV or an IR device.
 
 config MEDIA_CEC_SUPPORT
-        bool "HDMI CEC support"
-        select MEDIA_CEC_EDID
-        ---help---
-          Enable support for HDMI CEC (Consumer Electronics Control),
-          which is an optional HDMI feature.
-
-          Say Y when you have an HDMI receiver, transmitter or a USB CEC
-          adapter that supports HDMI CEC.
-
-config MEDIA_CEC_DEBUG
-        bool "HDMI CEC debugfs interface"
-        depends on MEDIA_CEC_SUPPORT && DEBUG_FS
-        ---help---
-          Turns on the DebugFS interface for CEC devices.
+       bool "HDMI CEC support"
+       ---help---
+         Enable support for HDMI CEC (Consumer Electronics Control),
+         which is an optional HDMI feature.
 
-config MEDIA_CEC_EDID
-        bool
+         Say Y when you have an HDMI receiver, transmitter or a USB CEC
+         adapter that supports HDMI CEC.
 
-config MEDIA_CEC_NOTIFIER
-        bool
-        select MEDIA_CEC_EDID
+source "drivers/media/cec/Kconfig"
 
 #
 # Media controller
diff --git a/drivers/media/Makefile b/drivers/media/Makefile
index 8b36a571d443..523fea3648ad 100644
--- a/drivers/media/Makefile
+++ b/drivers/media/Makefile
@@ -2,20 +2,10 @@
 # Makefile for the kernel multimedia device drivers.
 #
 
-ifeq ($(CONFIG_MEDIA_CEC_EDID),y)
-  obj-$(CONFIG_MEDIA_SUPPORT) += cec-edid.o
-endif
-
-ifeq ($(CONFIG_MEDIA_CEC_NOTIFIER),y)
-  obj-$(CONFIG_MEDIA_SUPPORT) += cec-notifier.o
-endif
-
-ifeq ($(CONFIG_MEDIA_CEC_SUPPORT),y)
-  obj-$(CONFIG_MEDIA_SUPPORT) += cec/
-endif
-
 media-objs      := media-device.o media-devnode.o media-entity.o
 
+obj-$(CONFIG_CEC_CORE) += cec/
+
 #
 # I2C drivers should come before other drivers, otherwise they'll fail
 # when compiled as builtin drivers
diff --git a/drivers/media/cec/Kconfig b/drivers/media/cec/Kconfig
new file mode 100644
index 000000000000..24b53187ee52
--- /dev/null
+++ b/drivers/media/cec/Kconfig
@@ -0,0 +1,13 @@
+config CEC_CORE
+        tristate
+        depends on MEDIA_CEC_SUPPORT
+        default y
+
+config MEDIA_CEC_NOTIFIER
+        bool
+
+config MEDIA_CEC_DEBUG
+        bool "HDMI CEC debugfs interface"
+        depends on MEDIA_CEC_SUPPORT && DEBUG_FS
+        ---help---
+          Turns on the DebugFS interface for CEC devices.
diff --git a/drivers/media/cec/Makefile b/drivers/media/cec/Makefile
index d6686337275f..402a6c62a3e8 100644
--- a/drivers/media/cec/Makefile
+++ b/drivers/media/cec/Makefile
@@ -1,5 +1,7 @@
-cec-objs := cec-core.o cec-adap.o cec-api.o
+cec-objs := cec-core.o cec-adap.o cec-api.o cec-edid.o
 
-ifeq ($(CONFIG_MEDIA_CEC_SUPPORT),y)
-  obj-$(CONFIG_MEDIA_SUPPORT) += cec.o
+ifeq ($(CONFIG_MEDIA_CEC_NOTIFIER),y)
+  cec-objs += cec-notifier.o
 endif
+
+obj-$(CONFIG_CEC_CORE) += cec.o
diff --git a/drivers/media/cec-edid.c b/drivers/media/cec/cec-edid.c
index 5719b991e340..c63dc81d2a29 100644
--- a/drivers/media/cec-edid.c
+++ b/drivers/media/cec/cec-edid.c
@@ -165,7 +165,3 @@ int cec_phys_addr_validate(u16 phys_addr, u16 *parent, u16 *port)
         return 0;
 }
 EXPORT_SYMBOL_GPL(cec_phys_addr_validate);
-
-MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
-MODULE_DESCRIPTION("CEC EDID helper functions");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/cec-notifier.c b/drivers/media/cec/cec-notifier.c
index 5f5209a73665..5f5209a73665 100644
--- a/drivers/media/cec-notifier.c
+++ b/drivers/media/cec/cec-notifier.c
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index b358d1a40688..40bb4bdc51da 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -209,7 +209,6 @@ config VIDEO_ADV7604
         depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
         depends on GPIOLIB || COMPILE_TEST
         select HDMI
-        select MEDIA_CEC_EDID
         ---help---
           Support for the Analog Devices ADV7604 video decoder.
 
@@ -221,7 +220,7 @@ config VIDEO_ADV7604
 
 config VIDEO_ADV7604_CEC
         bool "Enable Analog Devices ADV7604 CEC support"
-        depends on VIDEO_ADV7604 && MEDIA_CEC_SUPPORT
+        depends on VIDEO_ADV7604 && CEC_CORE
         ---help---
           When selected the adv7604 will support the optional
           HDMI CEC feature.
@@ -230,7 +229,6 @@ config VIDEO_ADV7842
         tristate "Analog Devices ADV7842 decoder"
         depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
         select HDMI
-        select MEDIA_CEC_EDID
         ---help---
           Support for the Analog Devices ADV7842 video decoder.
 
@@ -242,7 +240,7 @@ config VIDEO_ADV7842
 
 config VIDEO_ADV7842_CEC
         bool "Enable Analog Devices ADV7842 CEC support"
-        depends on VIDEO_ADV7842 && MEDIA_CEC_SUPPORT
+        depends on VIDEO_ADV7842 && CEC_CORE
         ---help---
           When selected the adv7842 will support the optional
           HDMI CEC feature.
@@ -470,7 +468,6 @@ config VIDEO_ADV7511
         tristate "Analog Devices ADV7511 encoder"
         depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
         select HDMI
-        select MEDIA_CEC_EDID
         ---help---
           Support for the Analog Devices ADV7511 video encoder.
 
@@ -481,7 +478,7 @@ config VIDEO_ADV7511
 
 config VIDEO_ADV7511_CEC
         bool "Enable Analog Devices ADV7511 CEC support"
-        depends on VIDEO_ADV7511 && MEDIA_CEC_SUPPORT
+        depends on VIDEO_ADV7511 && CEC_CORE
         ---help---
           When selected the adv7511 will support the optional
           HDMI CEC feature.
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 73c3bc5deadf..ac026ee1ca07 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -461,34 +461,6 @@ 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 MEDIA_CEC_NOTIFIER
-       ---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.
-
-config VIDEO_STI_HDMI_CEC
-       tristate "STMicroelectronics STiH4xx HDMI CEC driver"
-       depends on VIDEO_DEV && MEDIA_CEC_SUPPORT && (ARCH_STI || COMPILE_TEST)
-       select MEDIA_CEC_NOTIFIER
-       ---help---
-         This is a driver for STIH4xx 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
@@ -520,3 +492,31 @@ menuconfig DVB_PLATFORM_DRIVERS
 if DVB_PLATFORM_DRIVERS
 source "drivers/media/platform/sti/c8sectpfe/Kconfig"
 endif #DVB_PLATFORM_DRIVERS
+
+menuconfig CEC_PLATFORM_DRIVERS
+        bool "CEC platform devices"
+        depends on MEDIA_CEC_SUPPORT
+
+if CEC_PLATFORM_DRIVERS
+
+config VIDEO_SAMSUNG_S5P_CEC
+       tristate "Samsung S5P CEC driver"
+       depends on CEC_CORE && (PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST)
+       select MEDIA_CEC_NOTIFIER
+       ---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.
+
+config VIDEO_STI_HDMI_CEC
+       tristate "STMicroelectronics STiH4xx HDMI CEC driver"
+       depends on CEC_CORE && (ARCH_STI || COMPILE_TEST)
+       select MEDIA_CEC_NOTIFIER
+       ---help---
+         This is a driver for STIH4xx 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 #CEC_PLATFORM_DRIVERS
diff --git a/drivers/media/platform/vivid/Kconfig b/drivers/media/platform/vivid/Kconfig
index 94ab1364a792..b36ac19dc6e4 100644
--- a/drivers/media/platform/vivid/Kconfig
+++ b/drivers/media/platform/vivid/Kconfig
@@ -7,7 +7,6 @@ config VIDEO_VIVID
         select FB_CFB_FILLRECT
         select FB_CFB_COPYAREA
         select FB_CFB_IMAGEBLIT
-        select MEDIA_CEC_EDID
         select VIDEOBUF2_VMALLOC
         select VIDEOBUF2_DMA_CONTIG
         select VIDEO_V4L2_TPG
@@ -27,7 +26,7 @@ config VIDEO_VIVID
 
 config VIDEO_VIVID_CEC
         bool "Enable CEC emulation support"
-        depends on VIDEO_VIVID && MEDIA_CEC_SUPPORT
+        depends on VIDEO_VIVID && CEC_CORE
         ---help---
           When selected the vivid module will emulate the optional
           HDMI CEC feature.
diff --git a/drivers/media/usb/pulse8-cec/Kconfig b/drivers/media/usb/pulse8-cec/Kconfig
index 6ffc407de62f..8937f3986a01 100644
--- a/drivers/media/usb/pulse8-cec/Kconfig
+++ b/drivers/media/usb/pulse8-cec/Kconfig
@@ -1,6 +1,6 @@
 config USB_PULSE8_CEC
         tristate "Pulse Eight HDMI CEC"
-        depends on USB_ACM && MEDIA_CEC_SUPPORT
+        depends on USB_ACM && CEC_CORE
         select SERIO
         select SERIO_SERPORT
         ---help---
diff --git a/drivers/media/usb/rainshadow-cec/Kconfig b/drivers/media/usb/rainshadow-cec/Kconfig
index 447291b3cca3..3eb86607efb8 100644
--- a/drivers/media/usb/rainshadow-cec/Kconfig
+++ b/drivers/media/usb/rainshadow-cec/Kconfig
@@ -1,6 +1,6 @@
 config USB_RAINSHADOW_CEC
         tristate "RainShadow Tech HDMI CEC"
-        depends on USB_ACM && MEDIA_CEC_SUPPORT
+        depends on USB_ACM && CEC_CORE
         select SERIO
         select SERIO_SERPORT
         ---help---
diff --git a/include/media/cec-edid.h b/include/media/cec-edid.h
index bdf731ecba1a..242781fd377f 100644
--- a/include/media/cec-edid.h
+++ b/include/media/cec-edid.h
@@ -26,6 +26,8 @@
 #define cec_phys_addr_exp(pa) \
         ((pa) >> 12), ((pa) >> 8) & 0xf, ((pa) >> 4) & 0xf, (pa) & 0xf
 
+#if IS_ENABLED(CONFIG_CEC_CORE)
+
 /**
  * cec_get_edid_phys_addr() - find and return the physical address
  *
@@ -101,4 +103,31 @@ u16 cec_phys_addr_for_input(u16 phys_addr, u8 input);
  */
 int cec_phys_addr_validate(u16 phys_addr, u16 *parent, u16 *port);
 
+#else
+
+static inline u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
+                                         unsigned int *offset)
+{
+        if (offset)
+                *offset = 0;
+        return CEC_PHYS_ADDR_INVALID;
+}
+
+static inline void cec_set_edid_phys_addr(u8 *edid, unsigned int size,
+                                          u16 phys_addr)
+{
+}
+
+static inline u16 cec_phys_addr_for_input(u16 phys_addr, u8 input)
+{
+        return CEC_PHYS_ADDR_INVALID;
+}
+
+static inline int cec_phys_addr_validate(u16 phys_addr, u16 *parent, u16 *port)
+{
+        return 0;
+}
+
+#endif
+
 #endif /* _MEDIA_CEC_EDID_H */
diff --git a/include/media/cec.h b/include/media/cec.h
index b313e3ecab70..bae8d0153de7 100644
--- a/include/media/cec.h
+++ b/include/media/cec.h
@@ -204,7 +204,7 @@ static inline bool cec_is_sink(const struct cec_adapter *adap)
         return adap->phys_addr == 0;
 }
 
-#if IS_ENABLED(CONFIG_MEDIA_CEC_SUPPORT)
+#if IS_ENABLED(CONFIG_CEC_CORE)
 struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
                 void *priv, const char *name, u32 caps, u8 available_las);
 int cec_register_adapter(struct cec_adapter *adap, struct device *parent);