Commit b47b79d8 authored by Ramesh Shanmugasundaram's avatar Ramesh Shanmugasundaram Committed by Mauro Carvalho Chehab
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[media] media: i2c: max2175: Add MAX2175 support 



This patch adds driver support for the MAX2175 chip. This is Maxim
Integrated's RF to Bits tuner front end chip designed for software-defined
radio solutions. This driver exposes the tuner as a sub-device instance
with standard and custom controls to configure the device.

Signed-off-by: default avatarRamesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: default avatarHans Verkuil <hansverk@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent a45509c0

Documentation/media/v4l-drivers/index.rst

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@@ -42,6 +42,7 @@ For more details see the file COPYING in the source distribution of Linux. 
	davinci-vpbe

	fimc

	ivtv

	max2175

	meye

	omap3isp

	omap4_camera

Documentation/media/v4l-drivers/max2175.rst

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Maxim Integrated MAX2175 RF to bits tuner driver

================================================



The MAX2175 driver implements the following driver-specific controls:



``V4L2_CID_MAX2175_I2S_ENABLE``

-------------------------------

    Enable/Disable I2S output of the tuner. This is a private control

    that can be accessed only using the subdev interface.

    Refer to Documentation/media/kapi/v4l2-controls for more details.



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    * - ``(0)``

      - I2S output is disabled.

    * - ``(1)``

      - I2S output is enabled.



``V4L2_CID_MAX2175_HSLS``

-------------------------

    The high-side/low-side (HSLS) control of the tuner for a given band.



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    * - ``(0)``

      - The LO frequency position is below the desired frequency.

    * - ``(1)``

      - The LO frequency position is above the desired frequency.



``V4L2_CID_MAX2175_RX_MODE (menu)``

-----------------------------------

    The Rx mode controls a number of preset parameters of the tuner like

    sample clock (sck), sampling rate etc. These multiple settings are

    provided under one single label called Rx mode in the datasheet. The

    list below shows the supported modes with a brief description.



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    * - ``"Europe modes"``

    * - ``"FM 1.2" (0)``

      - This configures FM band with a sample rate of 0.512 million

        samples/sec with a 10.24 MHz sck.

    * - ``"DAB 1.2" (1)``

      - This configures VHF band with a sample rate of 2.048 million

        samples/sec with a 32.768 MHz sck.



    * - ``"North America modes"``

    * - ``"FM 1.0" (0)``

      - This configures FM band with a sample rate of 0.7441875 million

        samples/sec with a 14.88375 MHz sck.

    * - ``"DAB 1.2" (1)``

      - This configures FM band with a sample rate of 0.372 million

        samples/sec with a 7.441875 MHz sck.

drivers/media/i2c/Kconfig

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@@ -796,6 +796,18 @@ config VIDEO_SAA6752HS 
	  To compile this driver as a module, choose M here: the

	  module will be called saa6752hs.



comment "SDR tuner chips"



config SDR_MAX2175

	tristate "Maxim 2175 RF to Bits tuner"

	depends on VIDEO_V4L2 && MEDIA_SDR_SUPPORT && I2C

	---help---

	  Support for Maxim 2175 tuner. It is an advanced analog/digital

	  radio receiver with RF-to-Bits front-end designed for SDR solutions.



	  To compile this driver as a module, choose M here; the

	  module will be called max2175.



comment "Miscellaneous helper chips"



config VIDEO_THS7303

drivers/media/i2c/Makefile

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@@ -86,3 +86,5 @@ obj-$(CONFIG_VIDEO_IR_I2C) += ir-kbd-i2c.o 
obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o

obj-$(CONFIG_VIDEO_OV2659)	+= ov2659.o

obj-$(CONFIG_VIDEO_TC358743)	+= tc358743.o



obj-$(CONFIG_SDR_MAX2175) += max2175.o

drivers/media/i2c/max2175.c

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