[PATCHv8 0/4] iio: adc: exynos_adc: Support Exynos3250 ADC and code clean

[Chanwoo Choi]

This patchset support Exynos3250 ADC (Analog Digital Converter) because
Exynos3250 has additional special clock for ADC IP.

Changes from v7:
- Add acked message by Arnd Bergmann
- Use two compatible string for Exynos3250 ADC as following:
  : compatible = "samsung,exynos3250-adc", "samsung,exynos-adc-v2;

Changes from v6:
- Use "exynos3250-adc" compatible string instead of "exynos3250-adc-v2"
- Use "sclk" clock name instead of "sclk_adc"
- Remove un-necessary macro for exyno-adc-data-v2 structure.
- Remove '(void *)' cast and mark the exynos-adc-data structure as 'const'
- Change the number of ADC channels (Exynos3250 has only two channels for ADC)

Changes from v5:
- Add acked message by Kukjin Kim
- Add reviewed messgae by Tomasz Figa
- Fix typo (for for -> for)

Changes from v4:
- Use 'exynos_adc_data' structure instead of 'exynos_adc_ops' structure
  and remove enum variable of ADC version
- Fix wrong name of special clock (sclk_tsadc -> sclk_adc)
- Add reviewed message by Naveen Krishna Chatradhi
- Add functions for ADC clock control

Changes from v3:
- Add new 'exynos_adc_ops' structure to improve readability according to
 Tomasz Figa comment[1]
 [1] https://lkml.org/lkml/2014/4/16/238
- Add new 'exynos3250-adc-v2' compatible string to support Exynos3250 ADC
- Fix wrong compaitlbe string of ADC in Exynos3250 dtsi file

Changes from v2:
- Check return value of clock function to deal with error exception
- Fix minor coding style to improve readability

Changes from v1:
- Add new "samsung,exynos-adc-v3" compatible to support Exynos3250 ADC
- Add a patch about DT binding documentation

Chanwoo Choi (4):
  iio: adc: exynos_adc: Add exynos_adc_data structure to improve
    readability
  iio: adc: exynos_adc: Control special clock of ADC to support
    Exynos3250 ADC
  iio: devicetree: Add DT binding documentation for Exynos3250 ADC
  ARM: dts: Fix wrong compatible string for Exynos3250 ADC

 .../devicetree/bindings/arm/samsung/exynos-adc.txt |  25 +-
 arch/arm/boot/dts/exynos3250.dtsi                  |   5 +-
 drivers/iio/adc/exynos_adc.c                       | 335 +++++++++++++++------
 3 files changed, 275 insertions(+), 90 deletions(-)

-- 
1.8.0

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