From ae549a72212c94c757fa3ecbcaa986cc9d2e2b96 Mon Sep 17 00:00:00 2001 From: David Wu Date: Wed, 16 Mar 2016 01:44:15 +0800 Subject: [PATCH] iio: adc: rockchip_saradc: add saradc support for rk3399 The ADC is a 6-channel signal-ended 10-bit Successive Approximation Register (SAR) A/D Converter. Signed-off-by: David Wu Signed-off-by: Jonathan Cameron --- .../bindings/iio/adc/rockchip-saradc.txt | 6 +++++- drivers/iio/adc/rockchip_saradc.c | 19 +++++++++++++++++++ 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt index a9a5fe19ff2a..bf99e2f24788 100644 --- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt +++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt @@ -1,7 +1,11 @@ Rockchip Successive Approximation Register (SAR) A/D Converter bindings Required properties: -- compatible: Should be "rockchip,saradc" or "rockchip,rk3066-tsadc" +- compatible: should be "rockchip,-saradc" or "rockchip,rk3066-tsadc" + - "rockchip,saradc": for rk3188, rk3288 + - "rockchip,rk3066-tsadc": for rk3036 + - "rockchip,rk3399-saradc": for rk3399 + - reg: physical base address of the controller and length of memory mapped region. - interrupts: The interrupt number to the cpu. The interrupt specifier format diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index 9c311c1e1ac7..f9ad6c2d6821 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -159,6 +159,22 @@ static const struct rockchip_saradc_data rk3066_tsadc_data = { .clk_rate = 50000, }; +static const struct iio_chan_spec rockchip_rk3399_saradc_iio_channels[] = { + ADC_CHANNEL(0, "adc0"), + ADC_CHANNEL(1, "adc1"), + ADC_CHANNEL(2, "adc2"), + ADC_CHANNEL(3, "adc3"), + ADC_CHANNEL(4, "adc4"), + ADC_CHANNEL(5, "adc5"), +}; + +static const struct rockchip_saradc_data rk3399_saradc_data = { + .num_bits = 10, + .channels = rockchip_rk3399_saradc_iio_channels, + .num_channels = ARRAY_SIZE(rockchip_rk3399_saradc_iio_channels), + .clk_rate = 1000000, +}; + static const struct of_device_id rockchip_saradc_match[] = { { .compatible = "rockchip,saradc", @@ -166,6 +182,9 @@ static const struct of_device_id rockchip_saradc_match[] = { }, { .compatible = "rockchip,rk3066-tsadc", .data = &rk3066_tsadc_data, + }, { + .compatible = "rockchip,rk3399-saradc", + .data = &rk3399_saradc_data, }, {}, };