Hi Ramesh,
On Tue, May 09, 2017 at 02:37:34PM +0100, Ramesh Shanmugasundaram wrote:
> 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: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@xxxxxxxxxxxxxx>
> ---
> v5:
> - sck -> Sample clock is clarified in driver documentation (Hans)
> - "refout-load-pF" is renamed to "refout-load" as per updated bindings.
> ---
> Documentation/media/v4l-drivers/index.rst | 1 +
> Documentation/media/v4l-drivers/max2175.rst | 60 ++
> drivers/media/i2c/Kconfig | 4 +
> drivers/media/i2c/Makefile | 2 +
> drivers/media/i2c/max2175/Kconfig | 8 +
> drivers/media/i2c/max2175/Makefile | 4 +
> drivers/media/i2c/max2175/max2175.c | 1437 +++++++++++++++++++++++++++
> drivers/media/i2c/max2175/max2175.h | 108 ++
If the driver consists of two files, I think it'd be reasonable to have it
directly under drivers/media/i2c rather than in its own directory.
> 8 files changed, 1624 insertions(+)
> create mode 100644 Documentation/media/v4l-drivers/max2175.rst
> create mode 100644 drivers/media/i2c/max2175/Kconfig
> create mode 100644 drivers/media/i2c/max2175/Makefile
> create mode 100644 drivers/media/i2c/max2175/max2175.c
> create mode 100644 drivers/media/i2c/max2175/max2175.h
>
> diff --git a/Documentation/media/v4l-drivers/index.rst b/Documentation/media/v4l-drivers/index.rst
> index a606d1cdac13..d8cade53d496 100644
> --- a/Documentation/media/v4l-drivers/index.rst
> +++ b/Documentation/media/v4l-drivers/index.rst
> @@ -42,6 +42,7 @@ For more details see the file COPYING in the source distribution of Linux.
> davinci-vpbe
> fimc
> ivtv
> + max2175
Tabs, please!
> meye
> omap3isp
> omap4_camera
> diff --git a/Documentation/media/v4l-drivers/max2175.rst b/Documentation/media/v4l-drivers/max2175.rst
> new file mode 100644
> index 000000000000..94fb815f043b
> --- /dev/null
> +++ b/Documentation/media/v4l-drivers/max2175.rst
> @@ -0,0 +1,60 @@
> +Maxim Integrated MAX2175 RF to bits tuner driver
> +================================================
> +
> +The MAX2175 driver implements the following driver-specific controls:
> +
> +``V4L2_CID_MAX2175_I2S_ENABLE``
You're documenting driver specific controls. Should you provide a header
under include/uapi/linux to make these usable for the user space?
> +-------------------------------
> + Enable/Disable I2S output of the tuner.
> +
> +.. flat-table::
> + :header-rows: 0
> + :stub-columns: 0
> + :widths: 1 4
> +
> + * - ``(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.
> +
> +.. flat-table::
> + :header-rows: 0
> + :stub-columns: 0
> + :widths: 1 4
> +
> + * - ``(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.
> +
> +.. flat-table::
> + :header-rows: 0
> + :stub-columns: 0
> + :widths: 1 4
> +
> + * - ``"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.
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index b358d1a40688..d9fc1311794f 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -785,6 +785,10 @@ config VIDEO_SAA6752HS
> To compile this driver as a module, choose M here: the
> module will be called saa6752hs.
>
> +comment "SDR tuner chips"
> +
> +source "drivers/media/i2c/max2175/Kconfig"
> +
> comment "Miscellaneous helper chips"
>
> config VIDEO_THS7303
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index 62323ec66be8..39567c415425 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -7,6 +7,8 @@ obj-$(CONFIG_VIDEO_CX25840) += cx25840/
> obj-$(CONFIG_VIDEO_M5MOLS) += m5mols/
> obj-y += soc_camera/
>
> +obj-$(CONFIG_SDR_MAX2175) += max2175/
> +
> obj-$(CONFIG_VIDEO_APTINA_PLL) += aptina-pll.o
> obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
> obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
> diff --git a/drivers/media/i2c/max2175/Kconfig b/drivers/media/i2c/max2175/Kconfig
> new file mode 100644
> index 000000000000..93a8f837d79f
> --- /dev/null
> +++ b/drivers/media/i2c/max2175/Kconfig
> @@ -0,0 +1,8 @@
> +config SDR_MAX2175
> + tristate "Maxim 2175 RF to Bits tuner"
> + depends on VIDEO_V4L2 && MEDIA_SDR_SUPPORT && I2C
> + ---help---
> + Support for Maxim 2175 tuner
I think it'd be nice to have a few more words here to describe this chip.
What does it do? :-)
> +
> + To compile this driver as a module, choose M here; the
> + module will be called max2175.
> diff --git a/drivers/media/i2c/max2175/Makefile b/drivers/media/i2c/max2175/Makefile
> new file mode 100644
> index 000000000000..9bb46ac6b199
> --- /dev/null
> +++ b/drivers/media/i2c/max2175/Makefile
> @@ -0,0 +1,4 @@
> +#
> +# Makefile for Maxim RF to Bits tuner device
> +#
> +obj-$(CONFIG_SDR_MAX2175) += max2175.o
> diff --git a/drivers/media/i2c/max2175/max2175.c b/drivers/media/i2c/max2175/max2175.c
> new file mode 100644
> index 000000000000..d439ab853b6e
> --- /dev/null
> +++ b/drivers/media/i2c/max2175/max2175.c
> @@ -0,0 +1,1437 @@
> +/*
> + * Maxim Integrated MAX2175 RF to Bits tuner driver
> + *
> + * This driver & most of the hard coded values are based on the reference
> + * application delivered by Maxim for this device.
> + *
> + * Copyright (C) 2016 Maxim Integrated Products
> + * Copyright (C) 2017 Renesas Electronics Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2
> + * as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/errno.h>
> +#include <linux/i2c.h>
> +#include <linux/init.h>
> +#include <linux/interrupt.h>
Do you need the two? How about the rest?
> +#include <linux/kernel.h>
> +#include <linux/math64.h>
> +#include <linux/module.h>
> +#include <linux/regmap.h>
> +#include <linux/slab.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-of.h>
> +
> +#include "max2175.h"
> +
> +#define DRIVER_NAME "max2175"
> +
> +static unsigned int debug;
> +module_param(debug, uint, 0644);
> +MODULE_PARM_DESC(debug, "activate debug info");
Instead of having your own debug prints, could you rely on dynamic debug
instead?
> +
> +#define mxm_dbg(ctx, fmt, arg...) v4l2_dbg(1, debug, &ctx->sd, fmt, ## arg)
> +#define mxm_err(ctx, fmt, arg...) dev_err(&ctx->client->dev, fmt, ## arg)
Either use dev_* or v4l2_* functions for printing information but
preferrably not both.
> +
> +/* Rx mode */
> +struct max2175_rxmode {
> + enum max2175_band band; /* Associated band */
> + u32 freq; /* Default freq in Hz */
> + u8 i2s_word_size; /* Bit value */
> +};
> +
> +/* Register map to define preset values */
> +struct max2175_reg_map {
> + u8 idx; /* Register index */
> + u8 val; /* Register value */
> +};
> +
> +static const struct max2175_rxmode eu_rx_modes[] = {
> + /* EU modes */
> + [MAX2175_EU_FM_1_2] = { MAX2175_BAND_FM, 98256000, 1 },
> + [MAX2175_DAB_1_2] = { MAX2175_BAND_VHF, 182640000, 0 },
> +};
> +
> +static const struct max2175_rxmode na_rx_modes[] = {
> + /* NA modes */
> + [MAX2175_NA_FM_1_0] = { MAX2175_BAND_FM, 98255520, 1 },
> + [MAX2175_NA_FM_2_0] = { MAX2175_BAND_FM, 98255520, 6 },
> +};
> +
> +/*
> + * Preset values:
> + * Based on Maxim MAX2175 Register Table revision: 130p10
> + */
> +static const u8 full_fm_eu_1p0[] = {
> + 0x15, 0x04, 0xb8, 0xe3, 0x35, 0x18, 0x7c, 0x00,
> + 0x00, 0x7d, 0x40, 0x08, 0x70, 0x7a, 0x88, 0x91,
> + 0x61, 0x61, 0x61, 0x61, 0x5a, 0x0f, 0x34, 0x1c,
> + 0x14, 0x88, 0x33, 0x02, 0x00, 0x09, 0x00, 0x65,
> + 0x9f, 0x2b, 0x80, 0x00, 0x95, 0x05, 0x2c, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
> + 0x4a, 0x08, 0xa8, 0x0e, 0x0e, 0x2f, 0x7e, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0xab, 0x5e, 0xa9,
> + 0xae, 0xbb, 0x57, 0x18, 0x3b, 0x03, 0x3b, 0x64,
> + 0x40, 0x60, 0x00, 0x2a, 0xbf, 0x3f, 0xff, 0x9f,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00,
> + 0xff, 0xfc, 0xef, 0x1c, 0x40, 0x00, 0x00, 0x02,
> + 0x00, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0xac, 0x40, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x00, 0x00,
> + 0x00, 0x47, 0x00, 0x00, 0x11, 0x3f, 0x22, 0x00,
> + 0xf1, 0x00, 0x41, 0x03, 0xb0, 0x00, 0x00, 0x00,
> + 0x1b,
> +};
> +
> +static const u8 full_fm_na_1p0[] = {
> + 0x13, 0x08, 0x8d, 0xc0, 0x35, 0x18, 0x7d, 0x3f,
> + 0x7d, 0x75, 0x40, 0x08, 0x70, 0x7a, 0x88, 0x91,
> + 0x61, 0x61, 0x61, 0x61, 0x5c, 0x0f, 0x34, 0x1c,
> + 0x14, 0x88, 0x33, 0x02, 0x00, 0x01, 0x00, 0x65,
> + 0x9f, 0x2b, 0x80, 0x00, 0x95, 0x05, 0x2c, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
> + 0x4a, 0x08, 0xa8, 0x0e, 0x0e, 0xaf, 0x7e, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0xab, 0x5e, 0xa9,
> + 0xae, 0xbb, 0x57, 0x18, 0x3b, 0x03, 0x3b, 0x64,
> + 0x40, 0x60, 0x00, 0x2a, 0xbf, 0x3f, 0xff, 0x9f,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00,
> + 0xff, 0xfc, 0xef, 0x1c, 0x40, 0x00, 0x00, 0x02,
> + 0x00, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0xa6, 0x40, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x00, 0x00,
> + 0x00, 0x35, 0x00, 0x00, 0x11, 0x3f, 0x22, 0x00,
> + 0xf1, 0x00, 0x41, 0x03, 0xb0, 0x00, 0x00, 0x00,
> + 0x1b,
> +};
> +
> +/* DAB1.2 settings */
> +static const struct max2175_reg_map dab12_map[] = {
> + { 0x01, 0x13 }, { 0x02, 0x0d }, { 0x03, 0x15 }, { 0x04, 0x55 },
> + { 0x05, 0x0a }, { 0x06, 0xa0 }, { 0x07, 0x40 }, { 0x08, 0x00 },
> + { 0x09, 0x00 }, { 0x0a, 0x7d }, { 0x0b, 0x4a }, { 0x0c, 0x28 },
> + { 0x0e, 0x43 }, { 0x0f, 0xb5 }, { 0x10, 0x31 }, { 0x11, 0x9e },
> + { 0x12, 0x68 }, { 0x13, 0x9e }, { 0x14, 0x68 }, { 0x15, 0x58 },
> + { 0x16, 0x2f }, { 0x17, 0x3f }, { 0x18, 0x40 }, { 0x1a, 0x88 },
> + { 0x1b, 0xaa }, { 0x1c, 0x9a }, { 0x1d, 0x00 }, { 0x1e, 0x00 },
> + { 0x23, 0x80 }, { 0x24, 0x00 }, { 0x25, 0x00 }, { 0x26, 0x00 },
> + { 0x27, 0x00 }, { 0x32, 0x08 }, { 0x33, 0xf8 }, { 0x36, 0x2d },
> + { 0x37, 0x7e }, { 0x55, 0xaf }, { 0x56, 0x3f }, { 0x57, 0xf8 },
> + { 0x58, 0x99 }, { 0x76, 0x00 }, { 0x77, 0x00 }, { 0x78, 0x02 },
> + { 0x79, 0x40 }, { 0x82, 0x00 }, { 0x83, 0x00 }, { 0x85, 0x00 },
> + { 0x86, 0x20 },
> +};
> +
> +/* EU FM 1.2 settings */
> +static const struct max2175_reg_map fmeu1p2_map[] = {
> + { 0x01, 0x15 }, { 0x02, 0x04 }, { 0x03, 0xb8 }, { 0x04, 0xe3 },
> + { 0x05, 0x35 }, { 0x06, 0x18 }, { 0x07, 0x7c }, { 0x08, 0x00 },
> + { 0x09, 0x00 }, { 0x0a, 0x73 }, { 0x0b, 0x40 }, { 0x0c, 0x08 },
> + { 0x0e, 0x7a }, { 0x0f, 0x88 }, { 0x10, 0x91 }, { 0x11, 0x61 },
> + { 0x12, 0x61 }, { 0x13, 0x61 }, { 0x14, 0x61 }, { 0x15, 0x5a },
> + { 0x16, 0x0f }, { 0x17, 0x34 }, { 0x18, 0x1c }, { 0x1a, 0x88 },
> + { 0x1b, 0x33 }, { 0x1c, 0x02 }, { 0x1d, 0x00 }, { 0x1e, 0x01 },
> + { 0x23, 0x80 }, { 0x24, 0x00 }, { 0x25, 0x95 }, { 0x26, 0x05 },
> + { 0x27, 0x2c }, { 0x32, 0x08 }, { 0x33, 0xa8 }, { 0x36, 0x2f },
> + { 0x37, 0x7e }, { 0x55, 0xbf }, { 0x56, 0x3f }, { 0x57, 0xff },
> + { 0x58, 0x9f }, { 0x76, 0xac }, { 0x77, 0x40 }, { 0x78, 0x00 },
> + { 0x79, 0x00 }, { 0x82, 0x47 }, { 0x83, 0x00 }, { 0x85, 0x11 },
> + { 0x86, 0x3f },
> +};
> +
> +/* FM NA 1.0 settings */
> +static const struct max2175_reg_map fmna1p0_map[] = {
> + { 0x01, 0x13 }, { 0x02, 0x08 }, { 0x03, 0x8d }, { 0x04, 0xc0 },
> + { 0x05, 0x35 }, { 0x06, 0x18 }, { 0x07, 0x7d }, { 0x08, 0x3f },
> + { 0x09, 0x7d }, { 0x0a, 0x75 }, { 0x0b, 0x40 }, { 0x0c, 0x08 },
> + { 0x0e, 0x7a }, { 0x0f, 0x88 }, { 0x10, 0x91 }, { 0x11, 0x61 },
> + { 0x12, 0x61 }, { 0x13, 0x61 }, { 0x14, 0x61 }, { 0x15, 0x5c },
> + { 0x16, 0x0f }, { 0x17, 0x34 }, { 0x18, 0x1c }, { 0x1a, 0x88 },
> + { 0x1b, 0x33 }, { 0x1c, 0x02 }, { 0x1d, 0x00 }, { 0x1e, 0x01 },
> + { 0x23, 0x80 }, { 0x24, 0x00 }, { 0x25, 0x95 }, { 0x26, 0x05 },
> + { 0x27, 0x2c }, { 0x32, 0x08 }, { 0x33, 0xa8 }, { 0x36, 0xaf },
> + { 0x37, 0x7e }, { 0x55, 0xbf }, { 0x56, 0x3f }, { 0x57, 0xff },
> + { 0x58, 0x9f }, { 0x76, 0xa6 }, { 0x77, 0x40 }, { 0x78, 0x00 },
> + { 0x79, 0x00 }, { 0x82, 0x35 }, { 0x83, 0x00 }, { 0x85, 0x11 },
> + { 0x86, 0x3f },
> +};
> +
> +/* FM NA 2.0 settings */
> +static const struct max2175_reg_map fmna2p0_map[] = {
> + { 0x01, 0x13 }, { 0x02, 0x08 }, { 0x03, 0x8d }, { 0x04, 0xc0 },
> + { 0x05, 0x35 }, { 0x06, 0x18 }, { 0x07, 0x7c }, { 0x08, 0x54 },
> + { 0x09, 0xa7 }, { 0x0a, 0x55 }, { 0x0b, 0x42 }, { 0x0c, 0x48 },
> + { 0x0e, 0x7a }, { 0x0f, 0x88 }, { 0x10, 0x91 }, { 0x11, 0x61 },
> + { 0x12, 0x61 }, { 0x13, 0x61 }, { 0x14, 0x61 }, { 0x15, 0x5c },
> + { 0x16, 0x0f }, { 0x17, 0x34 }, { 0x18, 0x1c }, { 0x1a, 0x88 },
> + { 0x1b, 0x33 }, { 0x1c, 0x02 }, { 0x1d, 0x00 }, { 0x1e, 0x01 },
> + { 0x23, 0x80 }, { 0x24, 0x00 }, { 0x25, 0x95 }, { 0x26, 0x05 },
> + { 0x27, 0x2c }, { 0x32, 0x08 }, { 0x33, 0xa8 }, { 0x36, 0xaf },
> + { 0x37, 0x7e }, { 0x55, 0xbf }, { 0x56, 0x3f }, { 0x57, 0xff },
> + { 0x58, 0x9f }, { 0x76, 0xac }, { 0x77, 0xc0 }, { 0x78, 0x00 },
> + { 0x79, 0x00 }, { 0x82, 0x6b }, { 0x83, 0x00 }, { 0x85, 0x11 },
> + { 0x86, 0x3f },
> +};
> +
> +static const u16 ch_coeff_dab1[] = {
> + 0x001c, 0x0007, 0xffcd, 0x0056, 0xffa4, 0x0033, 0x0027, 0xff61,
> + 0x010e, 0xfec0, 0x0106, 0xffb8, 0xff1c, 0x023c, 0xfcb2, 0x039b,
> + 0xfd4e, 0x0055, 0x036a, 0xf7de, 0x0d21, 0xee72, 0x1499, 0x6a51,
> +};
> +
> +static const u16 ch_coeff_fmeu[] = {
> + 0x0000, 0xffff, 0x0001, 0x0002, 0xfffa, 0xffff, 0x0015, 0xffec,
> + 0xffde, 0x0054, 0xfff9, 0xff52, 0x00b8, 0x00a2, 0xfe0a, 0x00af,
> + 0x02e3, 0xfc14, 0xfe89, 0x089d, 0xfa2e, 0xf30f, 0x25be, 0x4eb6,
> +};
> +
> +static const u16 eq_coeff_fmeu1_ra02_m6db[] = {
> + 0x0040, 0xffc6, 0xfffa, 0x002c, 0x000d, 0xff90, 0x0037, 0x006e,
> + 0xffc0, 0xff5b, 0x006a, 0x00f0, 0xff57, 0xfe94, 0x0112, 0x0252,
> + 0xfe0c, 0xfc6a, 0x0385, 0x0553, 0xfa49, 0xf789, 0x0b91, 0x1a10,
> +};
> +
> +static const u16 ch_coeff_fmna[] = {
> + 0x0001, 0x0003, 0xfffe, 0xfff4, 0x0000, 0x001f, 0x000c, 0xffbc,
> + 0xffd3, 0x007d, 0x0075, 0xff33, 0xff01, 0x0131, 0x01ef, 0xfe60,
> + 0xfc7a, 0x020e, 0x0656, 0xfd94, 0xf395, 0x02ab, 0x2857, 0x3d3f,
> +};
> +
> +static const u16 eq_coeff_fmna1_ra02_m6db[] = {
> + 0xfff1, 0xffe1, 0xffef, 0x000e, 0x0030, 0x002f, 0xfff6, 0xffa7,
> + 0xff9d, 0x000a, 0x00a2, 0x00b5, 0xffea, 0xfed9, 0xfec5, 0x003d,
> + 0x0217, 0x021b, 0xff5a, 0xfc2b, 0xfcbd, 0x02c4, 0x0ac3, 0x0e85,
> +};
> +
> +static const u8 adc_presets[2][23] = {
> + {
> + 0x83, 0x00, 0xcf, 0xb4, 0x0f, 0x2c, 0x0c, 0x49,
> + 0x00, 0x00, 0x00, 0x8c, 0x02, 0x02, 0x00, 0x04,
> + 0xec, 0x82, 0x4b, 0xcc, 0x01, 0x88, 0x0c,
> + },
> + {
> + 0x83, 0x00, 0xcf, 0xb4, 0x0f, 0x2c, 0x0c, 0x49,
> + 0x00, 0x00, 0x00, 0x8c, 0x02, 0x20, 0x33, 0x8c,
> + 0x57, 0xd7, 0x59, 0xb7, 0x65, 0x0e, 0x0c,
> + },
> +};
> +
> +/* Custom controls */
> +#define V4L2_CID_MAX2175_I2S_ENABLE (V4L2_CID_USER_MAX217X_BASE + 0x01)
> +#define V4L2_CID_MAX2175_HSLS (V4L2_CID_USER_MAX217X_BASE + 0x02)
> +#define V4L2_CID_MAX2175_RX_MODE (V4L2_CID_USER_MAX217X_BASE + 0x03)
> +
> +/* Tuner bands */
> +static const struct v4l2_frequency_band eu_bands_rf = {
> + .tuner = 0,
> + .type = V4L2_TUNER_RF,
> + .index = 0,
> + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
> + .rangelow = 65000000,
> + .rangehigh = 240000000,
> +};
> +
> +static const struct v4l2_frequency_band na_bands_rf = {
> + .tuner = 0,
> + .type = V4L2_TUNER_RF,
> + .index = 0,
> + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
> + .rangelow = 65000000,
> + .rangehigh = 108000000,
> +};
> +
> +/* Regmap settings */
> +static const struct regmap_range max2175_regmap_volatile_range[] = {
> + regmap_reg_range(0x30, 0x35),
> + regmap_reg_range(0x3a, 0x45),
> + regmap_reg_range(0x59, 0x5e),
> + regmap_reg_range(0x73, 0x75),
> +};
> +
> +static const struct regmap_access_table max2175_volatile_regs = {
> + .yes_ranges = max2175_regmap_volatile_range,
> + .n_yes_ranges = ARRAY_SIZE(max2175_regmap_volatile_range),
> +};
> +
> +static const struct reg_default max2175_reg_defaults[] = {
> + { 0x00, 0x07},
> +};
> +
> +static const struct regmap_config max2175_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = 0xff,
> + .reg_defaults = max2175_reg_defaults,
> + .num_reg_defaults = ARRAY_SIZE(max2175_reg_defaults),
> + .volatile_table = &max2175_volatile_regs,
> + .cache_type = REGCACHE_FLAT,
> +};
> +
> +struct max2175 {
> + struct v4l2_subdev sd; /* Sub-device */
> + struct i2c_client *client; /* I2C client */
> +
> + /* Controls */
> + struct v4l2_ctrl_handler ctrl_hdl;
> + struct v4l2_ctrl *lna_gain; /* LNA gain value */
> + struct v4l2_ctrl *if_gain; /* I/F gain value */
> + struct v4l2_ctrl *pll_lock; /* PLL lock */
> + struct v4l2_ctrl *i2s_en; /* I2S output enable */
> + struct v4l2_ctrl *hsls; /* High-side/Low-side polarity */
> + struct v4l2_ctrl *rx_mode; /* Receive mode */
> +
> + /* Regmap */
> + struct regmap *regmap;
> +
> + /* Cached configuration */
> + u32 freq; /* Tuned freq In Hz */
> + const struct max2175_rxmode *rx_modes; /* EU or NA modes */
> + const struct v4l2_frequency_band *bands_rf; /* EU or NA bands */
> +
> + /* Device settings */
> + unsigned long xtal_freq; /* Ref Oscillator freq in Hz */
> + u32 decim_ratio;
> + bool master; /* Master/Slave */
> + bool am_hiz; /* AM Hi-Z filter */
> +
> + /* ROM values */
> + u8 rom_bbf_bw_am;
> + u8 rom_bbf_bw_fm;
> + u8 rom_bbf_bw_dab;
> +
> + /* Driver private variables */
> + bool mode_resolved; /* Flag to sanity check settings */
> +};
> +
> +static inline struct max2175 *max2175_from_sd(struct v4l2_subdev *sd)
> +{
> + return container_of(sd, struct max2175, sd);
> +}
> +
> +static inline struct max2175 *max2175_from_ctrl_hdl(struct v4l2_ctrl_handler *h)
> +{
> + return container_of(h, struct max2175, ctrl_hdl);
> +}
> +
> +/* Get bitval of a given val */
> +static inline u8 max2175_get_bitval(u8 val, u8 msb, u8 lsb)
> +{
> + return (val & GENMASK(msb, lsb)) >> lsb;
> +}
> +
> +/* Read/Write bit(s) on top of regmap */
> +static int max2175_read(struct max2175 *ctx, u8 idx, u8 *val)
> +{
> + u32 regval = 0;
> + int ret = regmap_read(ctx->regmap, idx, ®val);
It would be nice to have actual functionality out of variable
declarations. I.e.
int ret;
ret = regmap_read(...);
Same for write below.
> +
> + if (ret)
> + mxm_err(ctx, "read ret(%d): idx 0x%02x\n", ret, idx);
> +
> + *val = regval;
And perhaps do this only if the read was successful?
A newline would be nice here.
> + return ret;
> +}
> +
> +static int max2175_write(struct max2175 *ctx, u8 idx, u8 val)
> +{
> + int ret = regmap_write(ctx->regmap, idx, val);
> +
> + if (ret)
> + mxm_err(ctx, "write ret(%d): idx 0x%02x val 0x%02x\n",
> + ret, idx, val);
> + return ret;
> +}
> +
> +static u8 max2175_read_bits(struct max2175 *ctx, u8 idx, u8 msb, u8 lsb)
> +{
> + u8 val;
> +
> + if (max2175_read(ctx, idx, &val))
> + return 0;
> +
> + return max2175_get_bitval(val, msb, lsb);
> +}
> +
> +static int max2175_write_bits(struct max2175 *ctx, u8 idx,
> + u8 msb, u8 lsb, u8 newval)
> +{
> + int ret = regmap_update_bits(ctx->regmap, idx, GENMASK(msb, lsb),
> + newval << lsb);
> +
> + if (ret)
> + mxm_err(ctx, "wbits ret(%d): idx 0x%02x\n", ret, idx);
> +
> + return ret;
> +}
> +
> +static int max2175_write_bit(struct max2175 *ctx, u8 idx, u8 bit, u8 newval)
> +{
> + return max2175_write_bits(ctx, idx, bit, bit, newval);
> +}
> +
> +/* Checks expected pattern every msec until timeout */
> +static int max2175_poll_timeout(struct max2175 *ctx, u8 idx, u8 msb, u8 lsb,
> + u8 exp_bitval, u32 timeout_ms)
> +{
> + unsigned int val;
> +
> + return regmap_read_poll_timeout(ctx->regmap, idx, val,
> + (max2175_get_bitval(val, msb, lsb) == exp_bitval),
> + 1000, timeout_ms * 1000);
> +}
> +
> +static int max2175_poll_csm_ready(struct max2175 *ctx)
> +{
> + int ret;
> +
> + ret = max2175_poll_timeout(ctx, 69, 1, 1, 0, 50);
> + if (ret)
> + mxm_err(ctx, "csm not ready\n");
> +
> + return ret;
> +}
> +
> +#define MAX2175_IS_BAND_AM(ctx) \
> + (max2175_read_bits(ctx, 5, 1, 0) == MAX2175_BAND_AM)
> +
> +#define MAX2175_IS_BAND_VHF(ctx) \
> + (max2175_read_bits(ctx, 5, 1, 0) == MAX2175_BAND_VHF)
> +
> +#define MAX2175_IS_FM_MODE(ctx) \
> + (max2175_read_bits(ctx, 12, 5, 4) == 0)
> +
> +#define MAX2175_IS_FMHD_MODE(ctx) \
> + (max2175_read_bits(ctx, 12, 5, 4) == 1)
> +
> +#define MAX2175_IS_DAB_MODE(ctx) \
> + (max2175_read_bits(ctx, 12, 5, 4) == 2)
> +
> +static int max2175_band_from_freq(u32 freq)
> +{
> + if (freq >= 144000 && freq <= 26100000)
> + return MAX2175_BAND_AM;
> + else if (freq >= 65000000 && freq <= 108000000)
> + return MAX2175_BAND_FM;
> +
> + return MAX2175_BAND_VHF;
> +}
> +
> +static void max2175_i2s_enable(struct max2175 *ctx, bool enable)
> +{
> + if (enable)
> + /* Stuff bits are zeroed */
> + max2175_write_bits(ctx, 104, 3, 0, 2);
> + else
> + /* Keep SCK alive */
> + max2175_write_bits(ctx, 104, 3, 0, 9);
> + mxm_dbg(ctx, "i2s %sabled\n", enable ? "en" : "dis");
> +}
> +
> +static void max2175_set_filter_coeffs(struct max2175 *ctx, u8 m_sel,
> + u8 bank, const u16 *coeffs)
> +{
> + unsigned int i;
> + u8 coeff_addr, upper_address = 24;
> +
> + mxm_dbg(ctx, "set_filter_coeffs: m_sel %d bank %d\n", m_sel, bank);
> + max2175_write_bits(ctx, 114, 5, 4, m_sel);
> +
> + if (m_sel == 2)
> + upper_address = 12;
> +
> + for (i = 0; i < upper_address; i++) {
> + coeff_addr = i + bank * 24;
> + max2175_write(ctx, 115, coeffs[i] >> 8);
> + max2175_write(ctx, 116, coeffs[i]);
> + max2175_write(ctx, 117, coeff_addr | 1 << 7);
> + }
> + max2175_write_bit(ctx, 117, 7, 0);
> +}
> +
> +static void max2175_load_fmeu_1p2(struct max2175 *ctx)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(fmeu1p2_map); i++)
> + max2175_write(ctx, fmeu1p2_map[i].idx, fmeu1p2_map[i].val);
> +
> + ctx->decim_ratio = 36;
> +
> + /* Load the Channel Filter Coefficients into channel filter bank #2 */
> + max2175_set_filter_coeffs(ctx, MAX2175_CH_MSEL, 0, ch_coeff_fmeu);
> + max2175_set_filter_coeffs(ctx, MAX2175_EQ_MSEL, 0,
> + eq_coeff_fmeu1_ra02_m6db);
> +}
> +
> +static void max2175_load_dab_1p2(struct max2175 *ctx)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(dab12_map); i++)
> + max2175_write(ctx, dab12_map[i].idx, dab12_map[i].val);
> +
> + ctx->decim_ratio = 1;
> +
> + /* Load the Channel Filter Coefficients into channel filter bank #2 */
> + max2175_set_filter_coeffs(ctx, MAX2175_CH_MSEL, 2, ch_coeff_dab1);
> +}
> +
> +static void max2175_load_fmna_1p0(struct max2175 *ctx)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(fmna1p0_map); i++)
> + max2175_write(ctx, fmna1p0_map[i].idx, fmna1p0_map[i].val);
> +}
> +
> +static void max2175_load_fmna_2p0(struct max2175 *ctx)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(fmna2p0_map); i++)
> + max2175_write(ctx, fmna2p0_map[i].idx, fmna2p0_map[i].val);
> +}
> +
> +static void max2175_set_bbfilter(struct max2175 *ctx)
> +{
> + if (MAX2175_IS_BAND_AM(ctx)) {
> + max2175_write_bits(ctx, 12, 3, 0, ctx->rom_bbf_bw_am);
> + mxm_dbg(ctx, "set_bbfilter AM: rom %d\n", ctx->rom_bbf_bw_am);
> + } else if (MAX2175_IS_DAB_MODE(ctx)) {
> + max2175_write_bits(ctx, 12, 3, 0, ctx->rom_bbf_bw_dab);
> + mxm_dbg(ctx, "set_bbfilter DAB: rom %d\n", ctx->rom_bbf_bw_dab);
> + } else {
> + max2175_write_bits(ctx, 12, 3, 0, ctx->rom_bbf_bw_fm);
> + mxm_dbg(ctx, "set_bbfilter FM: rom %d\n", ctx->rom_bbf_bw_fm);
> + }
> +}
> +
> +static bool max2175_set_csm_mode(struct max2175 *ctx,
> + enum max2175_csm_mode new_mode)
> +{
> + int ret = max2175_poll_csm_ready(ctx);
> +
> + if (ret)
> + return ret;
> +
> + max2175_write_bits(ctx, 0, 2, 0, new_mode);
> + mxm_dbg(ctx, "set csm new mode %d\n", new_mode);
> +
> + /* Wait for a fixed settle down time depending on new mode */
> + switch (new_mode) {
> + case MAX2175_PRESET_TUNE:
> + usleep_range(51100, 51500); /* 51.1ms */
> + break;
> + /*
> + * Other mode switches need different sleep values depending on band &
> + * mode
> + */
> + default:
> + break;
> + }
> +
> + return max2175_poll_csm_ready(ctx);
> +}
> +
> +static int max2175_csm_action(struct max2175 *ctx,
> + enum max2175_csm_mode action)
> +{
> + int ret;
> +
> + mxm_dbg(ctx, "csm_action: %d\n", action);
> +
> + /* Other actions can be added in future when needed */
> + ret = max2175_set_csm_mode(ctx, MAX2175_LOAD_TO_BUFFER);
> + if (ret)
> + return ret;
Newline, please.
> + return max2175_set_csm_mode(ctx, MAX2175_PRESET_TUNE);
> +}
> +
> +static int max2175_set_lo_freq(struct max2175 *ctx, u32 lo_freq)
> +{
> + u8 lo_mult, loband_bits = 0, vcodiv_bits = 0;
> + u32 int_desired, frac_desired;
> + enum max2175_band band;
> + int ret;
> +
> + band = max2175_read_bits(ctx, 5, 1, 0);
> + switch (band) {
> + case MAX2175_BAND_AM:
> + lo_mult = 16;
> + break;
> + case MAX2175_BAND_FM:
> + if (lo_freq <= 74700000) {
> + lo_mult = 16;
> + } else if (lo_freq > 74700000 && lo_freq <= 110000000) {
> + loband_bits = 1;
> + lo_mult = 8;
> + } else {
> + loband_bits = 1;
> + vcodiv_bits = 3;
> + lo_mult = 8;
> + }
> + break;
> + case MAX2175_BAND_VHF:
> + if (lo_freq <= 210000000)
> + vcodiv_bits = 2;
> + else
> + vcodiv_bits = 1;
> +
> + loband_bits = 2;
> + lo_mult = 4;
> + break;
> + default:
> + loband_bits = 3;
> + vcodiv_bits = 2;
> + lo_mult = 2;
> + break;
> + }
> +
> + if (band == MAX2175_BAND_L)
> + lo_freq /= lo_mult;
> + else
> + lo_freq *= lo_mult;
> +
> + int_desired = lo_freq / ctx->xtal_freq;
> + frac_desired = div_u64((u64)(lo_freq % ctx->xtal_freq) << 20,
> + ctx->xtal_freq);
> +
> + /* Check CSM is not busy */
> + ret = max2175_poll_csm_ready(ctx);
> + if (ret)
> + return ret;
> +
> + mxm_dbg(ctx, "lo_mult %u int %u frac %u\n",
> + lo_mult, int_desired, frac_desired);
> +
> + /* Write the calculated values to the appropriate registers */
> + max2175_write(ctx, 1, int_desired);
> + max2175_write_bits(ctx, 2, 3, 0, (frac_desired >> 16) & 0xf);
> + max2175_write(ctx, 3, frac_desired >> 8);
> + max2175_write(ctx, 4, frac_desired);
> + max2175_write_bits(ctx, 5, 3, 2, loband_bits);
> + max2175_write_bits(ctx, 6, 7, 6, vcodiv_bits);
Ditto.
> + return ret;
> +}
> +
> +/*
> + * Helper similar to DIV_ROUND_CLOSEST but an inline function that accepts s64
> + * dividend and s32 divisor
> + */
> +static inline s64 max2175_round_closest(s64 dividend, s32 divisor)
> +{
> + if ((dividend > 0 && divisor > 0) || (dividend < 0 && divisor < 0))
> + return div_s64(dividend + divisor / 2, divisor);
> +
> + return div_s64(dividend - divisor / 2, divisor);
> +}
> +
> +static int max2175_set_nco_freq(struct max2175 *ctx, s32 nco_freq)
> +{
> + s32 clock_rate = ctx->xtal_freq / ctx->decim_ratio;
> + u32 nco_reg, abs_nco_freq = abs(nco_freq);
> + s64 nco_val_desired;
> + int ret;
> +
> + if (abs_nco_freq < clock_rate / 2) {
> + nco_val_desired = 2 * nco_freq;
> + } else {
> + nco_val_desired = 2 * (clock_rate - abs_nco_freq);
> + if (nco_freq < 0)
> + nco_val_desired = -nco_val_desired;
> + }
> +
> + nco_reg = max2175_round_closest(nco_val_desired << 20, clock_rate);
> +
> + if (nco_freq < 0)
> + nco_reg += 0x200000;
> +
> + /* Check CSM is not busy */
> + ret = max2175_poll_csm_ready(ctx);
> + if (ret)
> + return ret;
> +
> + mxm_dbg(ctx, "freq %d desired %lld reg %u\n",
> + nco_freq, nco_val_desired, nco_reg);
> +
> + /* Write the calculated values to the appropriate registers */
> + max2175_write_bits(ctx, 7, 4, 0, (nco_reg >> 16) & 0x1f);
> + max2175_write(ctx, 8, nco_reg >> 8);
> + max2175_write(ctx, 9, nco_reg);
Ditto. A lot of functions below would benefit from the same.
> + return ret;
> +}
> +
> +static int max2175_set_rf_freq_non_am_bands(struct max2175 *ctx, u64 freq,
> + u32 lo_pos)
> +{
> + s64 adj_freq, low_if_freq;
> + int ret;
> +
> + mxm_dbg(ctx, "rf_freq: non AM bands\n");
> +
> + if (MAX2175_IS_FM_MODE(ctx))
> + low_if_freq = 128000;
> + else if (MAX2175_IS_FMHD_MODE(ctx))
> + low_if_freq = 228000;
> + else
> + return max2175_set_lo_freq(ctx, freq);
> +
> + if (MAX2175_IS_BAND_VHF(ctx) == (lo_pos == MAX2175_LO_ABOVE_DESIRED))
> + adj_freq = freq + low_if_freq;
> + else
> + adj_freq = freq - low_if_freq;
> +
> + ret = max2175_set_lo_freq(ctx, adj_freq);
> + if (ret)
> + return ret;
> +
> + return max2175_set_nco_freq(ctx, -low_if_freq);
> +}
> +
> +static int max2175_set_rf_freq(struct max2175 *ctx, u64 freq, u32 lo_pos)
> +{
> + int ret;
> +
> + if (MAX2175_IS_BAND_AM(ctx))
> + ret = max2175_set_nco_freq(ctx, freq);
> + else
> + ret = max2175_set_rf_freq_non_am_bands(ctx, freq, lo_pos);
> +
> + mxm_dbg(ctx, "set_rf_freq: ret %d freq %llu\n", ret, freq);
> + return ret;
> +}
> +
> +static int max2175_tune_rf_freq(struct max2175 *ctx, u64 freq, u32 hsls)
> +{
> + int ret;
> +
> + ret = max2175_set_rf_freq(ctx, freq, hsls);
> + if (ret)
> + return ret;
> +
> + ret = max2175_csm_action(ctx, MAX2175_BUFFER_PLUS_PRESET_TUNE);
> + if (ret)
> + return ret;
> +
> + mxm_dbg(ctx, "tune_rf_freq: old %u new %llu\n", ctx->freq, freq);
> + ctx->freq = freq;
> + return ret;
> +}
> +
> +static void max2175_set_hsls(struct max2175 *ctx, u32 lo_pos)
> +{
> + mxm_dbg(ctx, "set_hsls: lo_pos %u\n", lo_pos);
> +
> + if ((lo_pos == MAX2175_LO_BELOW_DESIRED) == MAX2175_IS_BAND_VHF(ctx))
> + max2175_write_bit(ctx, 5, 4, 1);
> + else
> + max2175_write_bit(ctx, 5, 4, 0);
> +}
> +
> +static void max2175_set_eu_rx_mode(struct max2175 *ctx, u32 rx_mode)
> +{
> + switch (rx_mode) {
> + case MAX2175_EU_FM_1_2:
> + max2175_load_fmeu_1p2(ctx);
> + break;
> +
> + case MAX2175_DAB_1_2:
> + max2175_load_dab_1p2(ctx);
> + break;
> + }
> + /* Master is the default setting */
> + if (!ctx->master)
> + max2175_write_bit(ctx, 30, 7, 1);
> +}
> +
> +static void max2175_set_na_rx_mode(struct max2175 *ctx, u32 rx_mode)
> +{
> + switch (rx_mode) {
> + case MAX2175_NA_FM_1_0:
> + max2175_load_fmna_1p0(ctx);
> + break;
> + case MAX2175_NA_FM_2_0:
> + max2175_load_fmna_2p0(ctx);
> + break;
> + }
> + /* Master is the default setting */
> + if (!ctx->master)
> + max2175_write_bit(ctx, 30, 7, 1);
> +
> + ctx->decim_ratio = 27;
> +
> + /* Load the Channel Filter Coefficients into channel filter bank #2 */
> + max2175_set_filter_coeffs(ctx, MAX2175_CH_MSEL, 0, ch_coeff_fmna);
> + max2175_set_filter_coeffs(ctx, MAX2175_EQ_MSEL, 0,
> + eq_coeff_fmna1_ra02_m6db);
> +}
> +
> +static int max2175_set_rx_mode(struct max2175 *ctx, u32 rx_mode)
> +{
> + mxm_dbg(ctx, "set_rx_mode: %u am_hiz %u\n", rx_mode, ctx->am_hiz);
> + if (ctx->xtal_freq == MAX2175_EU_XTAL_FREQ)
> + max2175_set_eu_rx_mode(ctx, rx_mode);
> + else
> + max2175_set_na_rx_mode(ctx, rx_mode);
> +
> + if (ctx->am_hiz) {
> + mxm_dbg(ctx, "setting AM HiZ related config\n");
> + max2175_write_bit(ctx, 50, 5, 1);
> + max2175_write_bit(ctx, 90, 7, 1);
> + max2175_write_bits(ctx, 73, 1, 0, 2);
> + max2175_write_bits(ctx, 80, 5, 0, 33);
> + }
> +
> + /* Load BB filter trim values saved in ROM */
> + max2175_set_bbfilter(ctx);
> +
> + /* Set HSLS */
> + max2175_set_hsls(ctx, ctx->hsls->cur.val);
> +
> + /* Use i2s enable settings */
> + max2175_i2s_enable(ctx, ctx->i2s_en->cur.val);
> +
> + ctx->mode_resolved = true;
> + return 0;
> +}
> +
> +static int max2175_rx_mode_from_freq(struct max2175 *ctx, u32 freq, u32 *mode)
> +{
> + unsigned int i;
> + int band = max2175_band_from_freq(freq);
> +
> + /* Pick the first match always */
> + for (i = 0; i <= ctx->rx_mode->maximum; i++) {
> + if (ctx->rx_modes[i].band == band) {
> + *mode = i;
> + mxm_dbg(ctx, "rx_mode_from_freq: freq %u mode %d\n",
> + freq, *mode);
> + return 0;
> + }
> + }
> + return -EINVAL;
> +}
> +
> +static bool max2175_freq_rx_mode_valid(struct max2175 *ctx,
> + u32 mode, u32 freq)
> +{
> + int band = max2175_band_from_freq(freq);
> +
> + return (ctx->rx_modes[mode].band == band);
> +}
> +
> +static void max2175_load_adc_presets(struct max2175 *ctx)
> +{
> + unsigned int i, j;
> +
> + for (i = 0; i < ARRAY_SIZE(adc_presets); i++)
> + for (j = 0; j < ARRAY_SIZE(adc_presets[0]); j++)
> + max2175_write(ctx, 146 + j + i * 55, adc_presets[i][j]);
> +}
> +
> +static int max2175_init_power_manager(struct max2175 *ctx)
> +{
> + int ret;
> +
> + /* Execute on-chip power-up/calibration */
> + max2175_write_bit(ctx, 99, 2, 0);
> + usleep_range(1000, 1500);
> + max2175_write_bit(ctx, 99, 2, 1);
> +
> + /* Wait for the power manager to finish. */
> + ret = max2175_poll_timeout(ctx, 69, 7, 7, 1, 50);
> + if (ret)
> + mxm_err(ctx, "init pm failed\n");
> + return ret;
> +}
> +
> +static int max2175_recalibrate_adc(struct max2175 *ctx)
> +{
> + int ret;
> +
> + /* ADC Re-calibration */
> + max2175_write(ctx, 150, 0xff);
> + max2175_write(ctx, 205, 0xff);
> + max2175_write(ctx, 147, 0x20);
> + max2175_write(ctx, 147, 0x00);
> + max2175_write(ctx, 202, 0x20);
> + max2175_write(ctx, 202, 0x00);
> +
> + ret = max2175_poll_timeout(ctx, 69, 4, 3, 3, 50);
> + if (ret)
> + mxm_err(ctx, "adc recalibration failed\n");
> + return ret;
> +}
> +
> +static u8 max2175_read_rom(struct max2175 *ctx, u8 row)
> +{
> + u8 data;
> +
> + max2175_write_bit(ctx, 56, 4, 0);
> + max2175_write_bits(ctx, 56, 3, 0, row);
> +
> + usleep_range(2000, 2500);
> + max2175_read(ctx, 58, &data);
> +
> + max2175_write_bits(ctx, 56, 3, 0, 0);
> +
> + mxm_dbg(ctx, "read_rom: row %d data 0x%02x\n", row, data);
> + return data;
> +}
> +
> +static void max2175_load_from_rom(struct max2175 *ctx)
> +{
> + u8 data = 0;
> +
> + data = max2175_read_rom(ctx, 0);
> + ctx->rom_bbf_bw_am = data & 0x0f;
> + max2175_write_bits(ctx, 81, 3, 0, data >> 4);
> +
> + data = max2175_read_rom(ctx, 1);
> + ctx->rom_bbf_bw_fm = data & 0x0f;
> + ctx->rom_bbf_bw_dab = data >> 4;
> +
> + data = max2175_read_rom(ctx, 2);
> + max2175_write_bits(ctx, 82, 4, 0, data & 0x1f);
> + max2175_write_bits(ctx, 82, 7, 5, data >> 5);
> +
> + data = max2175_read_rom(ctx, 3);
> + if (ctx->am_hiz) {
> + data &= 0x0f;
> + data |= max2175_read_rom(ctx, 7) & 0x40 >> 2;
> + if (!data)
> + data |= 2;
> + } else {
> + data = data & 0xf0 >> 4;
> + data |= max2175_read_rom(ctx, 7) & 0x80 >> 3;
> + if (!data)
> + data |= 30;
> + }
> + max2175_write_bits(ctx, 80, 5, 0, data + 31);
> +
> + data = max2175_read_rom(ctx, 6);
> + max2175_write_bits(ctx, 81, 7, 6, data >> 6);
> +}
> +
> +static void max2175_load_full_fm_eu_1p0(struct max2175 *ctx)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(full_fm_eu_1p0); i++)
> + max2175_write(ctx, i + 1, full_fm_eu_1p0[i]);
> +
> + usleep_range(5000, 5500);
> + ctx->decim_ratio = 36;
> +}
> +
> +static void max2175_load_full_fm_na_1p0(struct max2175 *ctx)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(full_fm_na_1p0); i++)
> + max2175_write(ctx, i + 1, full_fm_na_1p0[i]);
> +
> + usleep_range(5000, 5500);
> + ctx->decim_ratio = 27;
> +}
> +
> +static int max2175_core_init(struct max2175 *ctx, u32 refout_bits)
> +{
> + int ret;
> +
> + /* MAX2175 uses 36.864MHz clock for EU & 40.154MHz for NA region */
> + if (ctx->xtal_freq == MAX2175_EU_XTAL_FREQ)
> + max2175_load_full_fm_eu_1p0(ctx);
> + else
> + max2175_load_full_fm_na_1p0(ctx);
> +
> + /* The default settings assume master */
> + if (!ctx->master)
> + max2175_write_bit(ctx, 30, 7, 1);
> +
> + mxm_dbg(ctx, "refout_bits %u\n", refout_bits);
> +
> + /* Set REFOUT */
> + max2175_write_bits(ctx, 56, 7, 5, refout_bits);
> +
> + /* ADC Reset */
> + max2175_write_bit(ctx, 99, 1, 0);
> + usleep_range(1000, 1500);
> + max2175_write_bit(ctx, 99, 1, 1);
> +
> + /* Load ADC preset values */
> + max2175_load_adc_presets(ctx);
> +
> + /* Initialize the power management state machine */
> + ret = max2175_init_power_manager(ctx);
> + if (ret)
> + return ret;
> +
> + /* Recalibrate ADC */
> + ret = max2175_recalibrate_adc(ctx);
> + if (ret)
> + return ret;
> +
> + /* Load ROM values to appropriate registers */
> + max2175_load_from_rom(ctx);
> +
> + if (ctx->xtal_freq == MAX2175_EU_XTAL_FREQ) {
> + /* Load FIR coefficients into bank 0 */
> + max2175_set_filter_coeffs(ctx, MAX2175_CH_MSEL, 0,
> + ch_coeff_fmeu);
> + max2175_set_filter_coeffs(ctx, MAX2175_EQ_MSEL, 0,
> + eq_coeff_fmeu1_ra02_m6db);
> + } else {
> + /* Load FIR coefficients into bank 0 */
> + max2175_set_filter_coeffs(ctx, MAX2175_CH_MSEL, 0,
> + ch_coeff_fmna);
> + max2175_set_filter_coeffs(ctx, MAX2175_EQ_MSEL, 0,
> + eq_coeff_fmna1_ra02_m6db);
> + }
> + mxm_dbg(ctx, "core initialized\n");
> + return 0;
> +}
> +
> +static void max2175_s_ctrl_rx_mode(struct max2175 *ctx, u32 rx_mode)
> +{
> + /* Load mode. Range check already done */
> + max2175_set_rx_mode(ctx, rx_mode);
> +
> + mxm_dbg(ctx, "s_ctrl_rx_mode: %u curr freq %u\n", rx_mode, ctx->freq);
> +
> + /* Check if current freq valid for mode & update */
> + if (max2175_freq_rx_mode_valid(ctx, rx_mode, ctx->freq))
> + max2175_tune_rf_freq(ctx, ctx->freq, ctx->hsls->cur.val);
> + else
> + /* Use default freq of mode if current freq is not valid */
> + max2175_tune_rf_freq(ctx, ctx->rx_modes[rx_mode].freq,
> + ctx->hsls->cur.val);
> +}
> +
> +static int max2175_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct max2175 *ctx = max2175_from_ctrl_hdl(ctrl->handler);
> +
> + mxm_dbg(ctx, "s_ctrl: id 0x%x, val %u\n", ctrl->id, ctrl->val);
> + switch (ctrl->id) {
> + case V4L2_CID_MAX2175_I2S_ENABLE:
> + max2175_i2s_enable(ctx, ctrl->val);
> + break;
> + case V4L2_CID_MAX2175_HSLS:
> + max2175_set_hsls(ctx, ctx->hsls->val);
ctrl->val ?
I guess it's effectively the same but I'd use ctrl->val.
> + break;
> + case V4L2_CID_MAX2175_RX_MODE:
> + max2175_s_ctrl_rx_mode(ctx, ctrl->val);
> + break;
> + }
> +
> + return 0;
> +}
> +
> +static u32 max2175_get_lna_gain(struct max2175 *ctx)
> +{
> + enum max2175_band band = max2175_read_bits(ctx, 5, 1, 0);
> +
> + switch (band) {
> + case MAX2175_BAND_AM:
> + return max2175_read_bits(ctx, 51, 3, 0);
> + case MAX2175_BAND_FM:
> + return max2175_read_bits(ctx, 50, 3, 0);
> + case MAX2175_BAND_VHF:
> + return max2175_read_bits(ctx, 52, 5, 0);
> + default:
> + return 0;
> + }
> +}
> +
> +static int max2175_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct max2175 *ctx = max2175_from_ctrl_hdl(ctrl->handler);
> +
> + switch (ctrl->id) {
> + case V4L2_CID_RF_TUNER_LNA_GAIN:
> + ctrl->val = max2175_get_lna_gain(ctx);
> + break;
> + case V4L2_CID_RF_TUNER_IF_GAIN:
> + ctrl->val = max2175_read_bits(ctx, 49, 4, 0);
> + break;
> + case V4L2_CID_RF_TUNER_PLL_LOCK:
> + ctrl->val = (max2175_read_bits(ctx, 60, 7, 6) == 3);
> + break;
> + }
> + mxm_dbg(ctx, "g_volatile_ctrl: id 0x%x val %d\n", ctrl->id, ctrl->val);
The values are already primarily offered through the user space interface.
For that reason I'd remove the debug print.
> + return 0;
> +};
> +
> +static int max2175_set_freq_and_mode(struct max2175 *ctx, u32 freq)
> +{
> + u32 rx_mode;
> + int ret;
> +
> + /* Get band from frequency */
> + ret = max2175_rx_mode_from_freq(ctx, freq, &rx_mode);
> + if (ret)
> + return ret;
> +
> + mxm_dbg(ctx, "set_freq_and_mode: freq %u rx_mode %d\n", freq, rx_mode);
> +
> + /* Load mode */
> + max2175_set_rx_mode(ctx, rx_mode);
> + ctx->rx_mode->cur.val = rx_mode;
> +
> + /* Tune to the new freq given */
> + return max2175_tune_rf_freq(ctx, freq, ctx->hsls->cur.val);
> +}
> +
> +static int max2175_s_frequency(struct v4l2_subdev *sd,
> + const struct v4l2_frequency *vf)
> +{
> + struct max2175 *ctx = max2175_from_sd(sd);
> + u32 freq;
> + int ret = 0;
> +
> + mxm_dbg(ctx, "s_freq: new %u curr %u, mode_resolved %d\n",
> + vf->frequency, ctx->freq, ctx->mode_resolved);
> +
> + if (vf->tuner != 0)
> + return -EINVAL;
> +
> + freq = clamp(vf->frequency, ctx->bands_rf->rangelow,
> + ctx->bands_rf->rangehigh);
> +
> + /* Check new freq valid for rx_mode if already resolved */
> + if (ctx->mode_resolved &&
> + max2175_freq_rx_mode_valid(ctx, ctx->rx_mode->cur.val, freq))
> + ret = max2175_tune_rf_freq(ctx, freq, ctx->hsls->cur.val);
> + else
> + /* Find default rx_mode for freq and tune to it */
> + ret = max2175_set_freq_and_mode(ctx, freq);
> +
> + mxm_dbg(ctx, "s_freq: ret %d curr %u mode_resolved %d mode %u\n",
> + ret, ctx->freq, ctx->mode_resolved, ctx->rx_mode->cur.val);
> + return ret;
> +}
> +
> +static int max2175_g_frequency(struct v4l2_subdev *sd,
> + struct v4l2_frequency *vf)
> +{
> + struct max2175 *ctx = max2175_from_sd(sd);
> + int ret = 0;
> +
> + if (vf->tuner != 0)
> + return -EINVAL;
> +
> + /* RF freq */
> + vf->type = V4L2_TUNER_RF;
> + vf->frequency = ctx->freq;
> + return ret;
> +}
> +
> +static int max2175_enum_freq_bands(struct v4l2_subdev *sd,
> + struct v4l2_frequency_band *band)
> +{
> + struct max2175 *ctx = max2175_from_sd(sd);
> +
> + if (band->tuner != 0 || band->index != 0)
> + return -EINVAL;
> +
> + *band = *ctx->bands_rf;
> + return 0;
> +}
> +
> +static int max2175_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
> +{
> + struct max2175 *ctx = max2175_from_sd(sd);
> +
> + if (vt->index > 0)
> + return -EINVAL;
> +
> + strlcpy(vt->name, "RF", sizeof(vt->name));
> + vt->type = V4L2_TUNER_RF;
> + vt->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
> + vt->rangelow = ctx->bands_rf->rangelow;
> + vt->rangehigh = ctx->bands_rf->rangehigh;
> + return 0;
> +}
> +
> +static int max2175_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
> +{
> + /* Check tuner index is valid */
> + if (vt->index > 0)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_tuner_ops max2175_tuner_ops = {
> + .s_frequency = max2175_s_frequency,
> + .g_frequency = max2175_g_frequency,
> + .enum_freq_bands = max2175_enum_freq_bands,
> + .g_tuner = max2175_g_tuner,
> + .s_tuner = max2175_s_tuner,
> +};
> +
> +static const struct v4l2_subdev_ops max2175_ops = {
> + .tuner = &max2175_tuner_ops,
> +};
> +
> +static const struct v4l2_ctrl_ops max2175_ctrl_ops = {
> + .s_ctrl = max2175_s_ctrl,
> + .g_volatile_ctrl = max2175_g_volatile_ctrl,
> +};
> +
> +static const struct v4l2_ctrl_config max2175_i2s_en = {
> + .ops = &max2175_ctrl_ops,
> + .id = V4L2_CID_MAX2175_I2S_ENABLE,
> + .name = "I2S Enable",
> + .type = V4L2_CTRL_TYPE_BOOLEAN,
> + .min = 0,
> + .max = 1,
> + .step = 1,
> + .def = 1,
> +};
> +
> +/*
> + * HSLS value control LO freq adjacent location configuration.
> + * Refer to Documentation/media/v4l-drivers/max2175 for more details.
> + */
> +static const struct v4l2_ctrl_config max2175_hsls = {
> + .ops = &max2175_ctrl_ops,
> + .id = V4L2_CID_MAX2175_HSLS,
> + .name = "HSLS Above/Below Desired",
> + .type = V4L2_CTRL_TYPE_BOOLEAN,
> + .min = 0,
> + .max = 1,
> + .step = 1,
> + .def = 1,
> +};
> +
> +/*
> + * Rx modes below are a set of preset configurations that decides the tuner's
> + * sck and sample rate of transmission. They are separate for EU & NA regions.
> + * Refer to Documentation/media/v4l-drivers/max2175 for more details.
> + */
> +static const char * const max2175_ctrl_eu_rx_modes[] = {
> + [MAX2175_EU_FM_1_2] = "EU FM 1.2",
> + [MAX2175_DAB_1_2] = "DAB 1.2",
> +};
> +
> +static const char * const max2175_ctrl_na_rx_modes[] = {
> + [MAX2175_NA_FM_1_0] = "NA FM 1.0",
> + [MAX2175_NA_FM_2_0] = "NA FM 2.0",
> +};
> +
> +static const struct v4l2_ctrl_config max2175_eu_rx_mode = {
> + .ops = &max2175_ctrl_ops,
> + .id = V4L2_CID_MAX2175_RX_MODE,
> + .name = "RX Mode",
> + .type = V4L2_CTRL_TYPE_MENU,
> + .max = ARRAY_SIZE(max2175_ctrl_eu_rx_modes) - 1,
> + .def = 0,
> + .qmenu = max2175_ctrl_eu_rx_modes,
> +};
> +
> +static const struct v4l2_ctrl_config max2175_na_rx_mode = {
> + .ops = &max2175_ctrl_ops,
> + .id = V4L2_CID_MAX2175_RX_MODE,
> + .name = "RX Mode",
> + .type = V4L2_CTRL_TYPE_MENU,
> + .max = ARRAY_SIZE(max2175_ctrl_na_rx_modes) - 1,
> + .def = 0,
> + .qmenu = max2175_ctrl_na_rx_modes,
> +};
> +
> +static int max2175_refout_load_to_bits(struct i2c_client *client, u32 load,
> + u32 *bits)
> +{
> + if (load >= 0 && load <= 40)
> + *bits = load / 10;
> + else if (load >= 60 && load <= 70)
> + *bits = load / 10 - 1;
> + else
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static int max2175_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + bool master = true, am_hiz = false;
> + u32 refout_load, refout_bits = 0; /* REFOUT disabled */
> + struct v4l2_ctrl_handler *hdl;
> + struct device_node *np;
> + struct v4l2_subdev *sd;
> + struct regmap *regmap;
> + struct max2175 *ctx;
> + struct clk *clk;
> + int ret;
> +
> + /* Parse DT properties */
> + np = of_parse_phandle(client->dev.of_node, "maxim,master", 0);
> + if (np) {
> + master = false; /* Slave tuner */
> + of_node_put(np);
> + }
> +
> + if (of_find_property(client->dev.of_node, "maxim,am-hiz-filter", NULL))
> + am_hiz = true;
> +
> + if (!of_property_read_u32(client->dev.of_node, "maxim,refout-load",
> + &refout_load)) {
> + ret = max2175_refout_load_to_bits(client, refout_load,
> + &refout_bits);
> + if (ret) {
> + dev_err(&client->dev, "invalid refout_load %u\n",
> + refout_load);
> + return -EINVAL;
> + }
> + }
> +
> + clk = devm_clk_get(&client->dev, "xtal");
> + if (IS_ERR(clk)) {
> + ret = PTR_ERR(clk);
> + dev_err(&client->dev, "cannot get xtal clock %d\n", ret);
> + return -ENODEV;
> + }
> +
> + regmap = devm_regmap_init_i2c(client, &max2175_regmap_config);
> + if (IS_ERR(regmap)) {
> + ret = PTR_ERR(regmap);
> + dev_err(&client->dev, "regmap init failed %d\n", ret);
> + return -ENODEV;
> + }
> +
> + /* Alloc tuner context */
> + ctx = devm_kzalloc(&client->dev, sizeof(*ctx), GFP_KERNEL);
> + if (ctx == NULL)
> + return -ENOMEM;
> +
> + sd = &ctx->sd;
> + ctx->master = master;
> + ctx->am_hiz = am_hiz;
> + ctx->mode_resolved = false;
> + ctx->regmap = regmap;
> + ctx->xtal_freq = clk_get_rate(clk);
> + dev_info(&client->dev, "xtal freq %luHz\n", ctx->xtal_freq);
> +
> + v4l2_i2c_subdev_init(sd, client, &max2175_ops);
> + ctx->client = client;
> +
> + sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
> +
> + /* Controls */
> + hdl = &ctx->ctrl_hdl;
> + ret = v4l2_ctrl_handler_init(hdl, 7);
> + if (ret)
> + return ret;
> +
> + ctx->lna_gain = v4l2_ctrl_new_std(hdl, &max2175_ctrl_ops,
> + V4L2_CID_RF_TUNER_LNA_GAIN,
> + 0, 63, 1, 0);
> + ctx->lna_gain->flags |= (V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY);
> + ctx->if_gain = v4l2_ctrl_new_std(hdl, &max2175_ctrl_ops,
> + V4L2_CID_RF_TUNER_IF_GAIN,
> + 0, 31, 1, 0);
> + ctx->if_gain->flags |= (V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY);
> + ctx->pll_lock = v4l2_ctrl_new_std(hdl, &max2175_ctrl_ops,
> + V4L2_CID_RF_TUNER_PLL_LOCK,
> + 0, 1, 1, 0);
> + ctx->pll_lock->flags |= (V4L2_CTRL_FLAG_VOLATILE |
> + V4L2_CTRL_FLAG_READ_ONLY);
> + ctx->i2s_en = v4l2_ctrl_new_custom(hdl, &max2175_i2s_en, NULL);
> + ctx->hsls = v4l2_ctrl_new_custom(hdl, &max2175_hsls, NULL);
> +
> + if (ctx->xtal_freq == MAX2175_EU_XTAL_FREQ) {
> + ctx->rx_mode = v4l2_ctrl_new_custom(hdl,
> + &max2175_eu_rx_mode, NULL);
> + ctx->rx_modes = eu_rx_modes;
> + ctx->bands_rf = &eu_bands_rf;
> + } else {
> + ctx->rx_mode = v4l2_ctrl_new_custom(hdl,
> + &max2175_na_rx_mode, NULL);
> + ctx->rx_modes = na_rx_modes;
> + ctx->bands_rf = &na_bands_rf;
> + }
> + ctx->sd.ctrl_handler = &ctx->ctrl_hdl;
> +
> + /* Set the defaults */
> + ctx->freq = ctx->bands_rf->rangelow;
> +
> + /* Register subdev */
> + ret = v4l2_async_register_subdev(sd);
> + if (ret) {
> + dev_err(&client->dev, "register subdev failed\n");
> + goto err_reg;
> + }
> +
> + /* Initialize device */
> + ret = max2175_core_init(ctx, refout_bits);
> + if (ret)
> + goto err_init;
> +
> + ret = v4l2_ctrl_handler_setup(hdl);
> + if (ret)
> + goto err_init;
> +
> + dev_info(&client->dev, "probed\n");
This was likely very useful at development time. :-) How about removing
it now?
> + return 0;
> +
> +err_init:
> + v4l2_async_unregister_subdev(sd);
> +err_reg:
> + v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
> + return ret;
> +}
> +
> +static int max2175_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct max2175 *ctx = max2175_from_sd(sd);
> +
> + v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
> + v4l2_async_unregister_subdev(sd);
> + dev_info(&client->dev, "removed\n");
Ditto.
> + return 0;
> +}
> +
> +static const struct i2c_device_id max2175_id[] = {
> + { DRIVER_NAME, 0},
> + {},
> +};
> +MODULE_DEVICE_TABLE(i2c, max2175_id);
> +
> +static const struct of_device_id max2175_of_ids[] = {
> + { .compatible = "maxim, max2175", },
I presume the space is extra. ^
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, max2175_of_ids);
> +
> +static struct i2c_driver max2175_driver = {
> + .driver = {
> + .name = DRIVER_NAME,
> + .of_match_table = max2175_of_ids,
> + },
> + .probe = max2175_probe,
> + .remove = max2175_remove,
> + .id_table = max2175_id,
> +};
> +
> +module_i2c_driver(max2175_driver);
> +
> +MODULE_DESCRIPTION("Maxim MAX2175 RF to Bits tuner driver");
> +MODULE_LICENSE("GPL v2");
> +MODULE_AUTHOR("Ramesh Shanmugasundaram <ramesh.shanmugasundaram@xxxxxxxxxxxxxx>");
> diff --git a/drivers/media/i2c/max2175/max2175.h b/drivers/media/i2c/max2175/max2175.h
> new file mode 100644
> index 000000000000..a760f9b5c6fb
> --- /dev/null
> +++ b/drivers/media/i2c/max2175/max2175.h
> @@ -0,0 +1,108 @@
> +/*
> + * Maxim Integrated MAX2175 RF to Bits tuner driver
> + *
> + * This driver & most of the hard coded values are based on the reference
> + * application delivered by Maxim for this device.
> + *
> + * Copyright (C) 2016 Maxim Integrated Products
> + * Copyright (C) 2017 Renesas Electronics Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2
> + * as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef __MAX2175_H__
> +#define __MAX2175_H__
> +
> +#define MAX2175_EU_XTAL_FREQ 36864000 /* In Hz */
> +#define MAX2175_NA_XTAL_FREQ 40186125 /* In Hz */
> +
> +enum max2175_region {
> + MAX2175_REGION_EU = 0, /* Europe */
> + MAX2175_REGION_NA, /* North America */
> +};
> +
Extra newline.
> +
> +enum max2175_band {
> + MAX2175_BAND_AM = 0,
> + MAX2175_BAND_FM,
> + MAX2175_BAND_VHF,
> + MAX2175_BAND_L,
> +};
> +
> +enum max2175_eu_mode {
> + /* EU modes */
> + MAX2175_EU_FM_1_2 = 0,
> + MAX2175_DAB_1_2,
> +
> + /* Other possible modes to add in future
> + * MAX2175_DAB_1_0,
> + * MAX2175_DAB_1_3,
> + * MAX2175_EU_FM_2_2,
> + * MAX2175_EU_FMHD_4_0,
> + * MAX2175_EU_AM_1_0,
> + * MAX2175_EU_AM_2_2,
> + */
> +};
> +
> +enum max2175_na_mode {
> + /* NA modes */
> + MAX2175_NA_FM_1_0 = 0,
> + MAX2175_NA_FM_2_0,
> +
> + /* Other possible modes to add in future
> + * MAX2175_NA_FMHD_1_0,
> + * MAX2175_NA_FMHD_1_2,
> + * MAX2175_NA_AM_1_0,
> + * MAX2175_NA_AM_1_2,
> + */
> +};
> +
> +/* Supported I2S modes */
> +enum {
> + MAX2175_I2S_MODE0 = 0,
> + MAX2175_I2S_MODE1,
> + MAX2175_I2S_MODE2,
> + MAX2175_I2S_MODE3,
> + MAX2175_I2S_MODE4,
> +};
> +
> +/* Coefficient table groups */
> +enum {
> + MAX2175_CH_MSEL = 0,
> + MAX2175_EQ_MSEL,
> + MAX2175_AA_MSEL,
> +};
> +
> +/* HSLS LO injection polarity */
> +enum {
> + MAX2175_LO_BELOW_DESIRED = 0,
> + MAX2175_LO_ABOVE_DESIRED,
> +};
> +
> +/* Channel FSM modes */
> +enum max2175_csm_mode {
> + MAX2175_LOAD_TO_BUFFER = 0,
> + MAX2175_PRESET_TUNE,
> + MAX2175_SEARCH,
> + MAX2175_AF_UPDATE,
> + MAX2175_JUMP_FAST_TUNE,
> + MAX2175_CHECK,
> + MAX2175_LOAD_AND_SWAP,
> + MAX2175_END,
> + MAX2175_BUFFER_PLUS_PRESET_TUNE,
> + MAX2175_BUFFER_PLUS_SEARCH,
> + MAX2175_BUFFER_PLUS_AF_UPDATE,
> + MAX2175_BUFFER_PLUS_JUMP_FAST_TUNE,
> + MAX2175_BUFFER_PLUS_CHECK,
> + MAX2175_BUFFER_PLUS_LOAD_AND_SWAP,
> + MAX2175_NO_ACTION
> +};
> +
> +#endif /* __MAX2175_H__ */
--
Kind regards,
Sakari Ailus
sakari.ailus@xxxxxxxxxxxxxxx
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