Eric Lee / smarc-uboot

04 Oct, 2017

1 commit

  • 9b643e312   treewide: replace with error() with pr_err() ... Browse Code »
    40

    U-Boot widely uses error() as a bit noisier variant of printf().

    This macro causes name conflict with the following line in
    include/linux/compiler-gcc.h:

    # define __compiletime_error(message) __attribute__((error(message)))

    This prevents us from using __compiletime_error(), and makes it
    difficult to fully sync BUILD_BUG macros with Linux. (Notice
    Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)

    Let's convert error() into now treewide-available pr_err().

    Done with the help of Coccinelle, excluing tools/ directory.

    The semantic patch I used is as follows:

    //
    @@@@
    -error
    +pr_err
    (...)
    //

    Signed-off-by: Masahiro Yamada
    Reviewed-by: Simon Glass
    [trini: Re-run Coccinelle]
    Signed-off-by: Tom Rini

    Masahiro Yamada
     

01 Oct, 2017

1 commit

  • ae3ed042e   dm: adc: Add driver for Rockchip SARADC ... Browse Code »

    The ADC can support some channels signal-ended some bits Successive Approximation
    Register (SAR) A/D Converter, like 6-channel and 10-bit. It converts the analog
    input signal into some bits binary digital codes.

    Signed-off-by: David Wu
    Acked-by: Philipp Tomsich
    Reviewed-by: Philipp Tomsich

    David Wu
     

01 Jun, 2017

2 commits

  • 53d788d86   dm: adc: Convert uclass to livetree ... Browse Code »

    Update the adc uclass to support a live device tree.

    Signed-off-by: Simon Glass

    Simon Glass
     
  • a821c4af7   dm: Rename dev_addr..() functions ... Browse Code »

    These support the flat device tree. We want to use the dev_read_..()
    prefix for functions that support both flat tree and live tree. So rename
    the existing functions to avoid confusion.

    In the end we will have:

    1. dev_read_addr...() - works on devices, supports flat/live tree
    2. devfdt_get_addr...() - current functions, flat tree only
    3. of_get_address() etc. - new functions, live tree only

    All drivers will be written to use 1. That function will in turn call
    either 2 or 3 depending on whether the flat or live tree is in use.

    Note this involves changing some dead code - the imx_lpi2c.c file.

    Signed-off-by: Simon Glass

    Simon Glass
     

08 Feb, 2017

1 commit

  • e160f7d43   dm: core: Replace of_offset with accessor ... Browse Code »

    At present devices use a simple integer offset to record the device tree
    node associated with the device. In preparation for supporting a live
    device tree, which uses a node pointer instead, refactor existing code to
    access this field through an inline function.

    Signed-off-by: Simon Glass

    Simon Glass
     

02 Nov, 2015

3 commits

  • 08d6300a3   sandbox: add ADC driver ... Browse Code »

    This commit adds implementation of Sandbox ADC device emulation.
    The device provides:
    - single and multi-channel conversion
    - 4 channels with predefined conversion output data
    - 16-bit resolution

    Signed-off-by: Przemyslaw Marczak
    Cc: Simon Glass
    Signed-off-by: Minkyu Kang

    Przemyslaw Marczak
     
  • 3b3ad9015   dm: adc: add Exynos54xx compatible ADC driver ... Browse Code »

    This commit adds driver for Exynos54xx ADC subsystem.

    The driver is implemented using driver model, amd provides
    ADC uclass's methods for ADC single channel operations:
    - adc_start_channel()
    - adc_channel_data()
    - adc_stop()

    The basic parameters of ADC conversion, are:
    - sample rate: 600KSPS
    - output the data as average of 8 time conversion

    ADC features:
    - sample rate: 600KSPS
    - resolution: 12-bit
    - channels: 10 (analog multiplexer)

    Signed-off-by: Przemyslaw Marczak
    Cc: Minkyu Kang
    Cc: Simon Glass
    Signed-off-by: Minkyu Kang

    Przemyslaw Marczak
     
  • 5decbf530   dm: adc: add simple ADC uclass implementation ... Browse Code »

    This commit adds:
    - new uclass id: UCLASS_ADC
    - new uclass driver: drivers/adc/adc-uclass.c

    The new uclass's API allows for ADC operation on:
    * single-channel with channel selection by a number
    * multti-channel with channel selection by bit mask

    ADC uclass's functions:
    * single-channel:
    - adc_start_channel() - start channel conversion
    - adc_channel_data() - get conversion data
    - adc_channel_single_shot() - start/get conversion data
    * multi-channel:
    - adc_start_channels() - start selected channels conversion
    - adc_channels_data() - get conversion data
    - adc_channels_single_shot() - start/get conversion data for channels
    selected by bit mask
    * general:
    - adc_stop() - stop the conversion
    - adc_vdd_value() - positive reference Voltage value with polarity [uV]
    - adc_vss_value() - negative reference Voltage value with polarity [uV]
    - adc_data_mask() - conversion data bit mask

    The device tree can provide below constraints/properties:
    - vdd-polarity-negative: if true: Vdd = vdd-microvolts * (-1)
    - vss-polarity-negative: if true: Vss = vss-microvolts * (-1)
    - vdd-supply: phandle to Vdd regulator's node
    - vss-supply: phandle to Vss regulator's node
    And optional, checked only if the above corresponding, doesn't exist:
    - vdd-microvolts: positive reference Voltage [uV]
    - vss-microvolts: negative reference Voltage [uV]

    Signed-off-by: Przemyslaw Marczak
    Cc: Simon Glass
    Signed-off-by: Minkyu Kang

    Przemyslaw Marczak