[media] ad9389b: driver for the Analog Devices AD9389B video encoder

Initial version of this driver.

The full datasheets are available from the Analog Devices website:

  http://ez.analog.com/docs/DOC-1741

Not all features of the receiver are supported by this driver for various
reasons. Most notably:

- No CEC support (the CEC API needs a lot more discussion)
- No HDCP repeater support (we don't use that either)

I'm sure that there are more things missing, but this driver does work
well for our hardware.

Note that I am using the register addresses instead of register names: the
datasheet containing the register descriptions is organized by register
address. Using names would make the datasheet lookup very hard. An attempt
was made to try and document what is being done when registers are used
instead.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/i2c/Kconfig

@@ -387,6 +387,17 @@ config VIDEO_ADV7393
 	  To compile this driver as a module, choose M here: the
 	  module will be called adv7393.
 
+config VIDEO_AD9389B
+	tristate "Analog Devices AD9389B encoder"
+	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
+	---help---
+	  Support for the Analog Devices AD9389B video encoder.
+
+	  This is a Analog Devices HDMI transmitter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad9389b.
+
 config VIDEO_AK881X
 	tristate "AK8813/AK8814 video encoders"
 	depends on I2C

drivers/media/i2c/Makefile

@@ -26,6 +26,7 @@ obj-$(CONFIG_VIDEO_ADV7183) += adv7183.o
 obj-$(CONFIG_VIDEO_ADV7343) += adv7343.o
 obj-$(CONFIG_VIDEO_ADV7393) += adv7393.o
 obj-$(CONFIG_VIDEO_ADV7604) += adv7604.o
+obj-$(CONFIG_VIDEO_AD9389B) += ad9389b.o
 obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
 obj-$(CONFIG_VIDEO_VS6624)  += vs6624.o
 obj-$(CONFIG_VIDEO_BT819) += bt819.o

include/media/ad9389b.h

@@ -0,0 +1,49 @@
+/*
+ * Analog Devices AD9389B/AD9889B video encoder driver header
+ *
+ * Copyright 2012 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef AD9389B_H
+#define AD9389B_H
+
+enum ad9389b_tmds_pll_gear {
+	AD9389B_TMDS_PLL_GEAR_AUTOMATIC,
+	AD9389B_TMDS_PLL_GEAR_SEMI_AUTOMATIC,
+};
+
+/* Platform dependent definitions */
+struct ad9389b_platform_data {
+	enum ad9389b_tmds_pll_gear tmds_pll_gear ;
+	/* Differential Data/Clock Output Drive Strength (reg. 0xa2/0xa3) */
+	u8 diff_data_drive_strength;
+	u8 diff_clk_drive_strength;
+};
+
+/* notify events */
+#define AD9389B_MONITOR_DETECT 0
+#define AD9389B_EDID_DETECT 1
+
+struct ad9389b_monitor_detect {
+	int present;
+};
+
+struct ad9389b_edid_detect {
+	int present;
+	int segment;
+};
+
+#endif

include/media/v4l2-chip-ident.h

@@ -215,6 +215,9 @@ enum {
 	V4L2_IDENT_CX23888_AV = 8881, /* Integrated A/V decoder */
 	V4L2_IDENT_CX23888_IR = 8882, /* Integrated infrared controller */
 
+	/* module ad9389b: just ident 9389 */
+	V4L2_IDENT_AD9389B = 9389,
+
 	/* module tda9840: just ident 9840 */
 	V4L2_IDENT_TDA9840 = 9840,