media: i2c: add DS90UB960 driver

Add driver for TI DS90UB960 FPD-Link III Deserializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

MAINTAINERS

@@ -21330,6 +21330,14 @@ F:	drivers/misc/tifm*
 F:	drivers/mmc/host/tifm_sd.c
 F:	include/linux/tifm.h
 
+TI FPD-LINK DRIVERS
+M:	Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/media/i2c/ti,ds90*
+F:	drivers/media/i2c/ds90*
+F:	include/media/i2c/ds90*
+
 TI KEYSTONE MULTICORE NAVIGATOR DRIVERS
 M:	Nishanth Menon <nm@ti.com>
 M:	Santosh Shilimkar <ssantosh@kernel.org>

drivers/media/i2c/Kconfig

@@ -1625,4 +1625,25 @@ config VIDEO_THS7303
 
 endmenu
 
+#
+# Video serializers and deserializers (e.g. FPD-Link)
+#
+
+menu "Video serializers and deserializers"
+
+config VIDEO_DS90UB960
+	tristate "TI FPD-Link III/IV Deserializers"
+	depends on OF && I2C && VIDEO_DEV && COMMON_CLK
+	select I2C_ATR
+	select MEDIA_CONTROLLER
+	select GPIOLIB
+	select REGMAP_I2C
+	select V4L2_FWNODE
+	select VIDEO_V4L2_SUBDEV_API
+	help
+	  Device driver for the Texas Instruments DS90UB960
+	  FPD-Link III Deserializer and DS90UB9702 FPD-Link IV Deserializer.
+
+endmenu
+
 endif # VIDEO_DEV

drivers/media/i2c/Makefile

@@ -28,6 +28,7 @@ obj-$(CONFIG_VIDEO_CS3308) += cs3308.o
 obj-$(CONFIG_VIDEO_CS5345) += cs5345.o
 obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o
 obj-$(CONFIG_VIDEO_CX25840) += cx25840/
+obj-$(CONFIG_VIDEO_DS90UB960) += ds90ub960.o
 obj-$(CONFIG_VIDEO_DW9714) += dw9714.o
 obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
 obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o

include/media/i2c/ds90ub9xx.h

+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __MEDIA_I2C_DS90UB9XX_H__
+#define __MEDIA_I2C_DS90UB9XX_H__
+
+#include <linux/types.h>
+
+struct i2c_atr;
+
+/**
+ * struct ds90ub9xx_platform_data - platform data for FPD-Link Serializers.
+ * @port: Deserializer RX port for this Serializer
+ * @atr: I2C ATR
+ * @bc_rate: back-channel clock rate
+ */
+struct ds90ub9xx_platform_data {
+	u32 port;
+	struct i2c_atr *atr;
+	unsigned long bc_rate;
+};
+
+#endif /* __MEDIA_I2C_DS90UB9XX_H__ */