| Message ID | 20241206111337.726244-10-claudiu.beznea.uj@bp.renesas.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | iio: adc: rzg2l_adc: Add support for RZ/G3S | expand |
On Fri, Dec 6, 2024 at 11:16 AM Claudiu <claudiu.beznea@tuxon.dev> wrote: > > From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> > > The ADC IP available on the RZ/G3S differs slightly from the one found on > the RZ/G2L. The identified differences are as follows: > - different number of channels (one being used for temperature conversion); > consequently, various registers differ > - different default sampling periods > - the RZ/G3S variant lacks the ADVIC register. > > To accommodate these differences, the rzg2l_adc driver has been updated by > introducing the struct rzg2l_adc_hw_params, which encapsulates the > hardware-specific differences between the IP variants. A pointer to an > object of type struct rzg2l_adc_hw_params is embedded in > struct rzg2l_adc_data. > > Additionally, the completion member of struct rzg2l_adc_data was relocated > to avoid potential padding, if any. > > The code has been adjusted to utilize hardware-specific parameters stored > in the new structure instead of relying on plain macros. > > The check of chan->channel in rzg2l_adc_read_raw() function, against the > driver specific mask was removed as the subsystem should have already > been done this before reaching the rzg2l_adc_read_raw() function. Along > with it the local variable ch was dropped as chan->channel could be used > instead. > > Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> > --- > > Changes in v2: > - kept the RZG2L_ADC_MAX_CHANNELS as suggested in the review process; > along with it, last_val[] is now again statically alocated; code > from v1 around last_val has been adjusted to align with the new > approach > - dropped ch variable from rzg2l_adc_read_raw() and adjusted the > patch description to reflect it. > > drivers/iio/adc/rzg2l_adc.c | 87 +++++++++++++++++++++++++------------ > 1 file changed, 59 insertions(+), 28 deletions(-) > Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Cheers, Prabhakar > diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c > index c3f9f95cdbba..6740912f83c5 100644 > --- a/drivers/iio/adc/rzg2l_adc.c > +++ b/drivers/iio/adc/rzg2l_adc.c > @@ -33,20 +33,15 @@ > #define RZG2L_ADM1_MS BIT(2) > #define RZG2L_ADM1_BS BIT(4) > #define RZG2L_ADM1_EGA_MASK GENMASK(13, 12) > -#define RZG2L_ADM2_CHSEL_MASK GENMASK(7, 0) > #define RZG2L_ADM3_ADIL_MASK GENMASK(31, 24) > #define RZG2L_ADM3_ADCMP_MASK GENMASK(23, 16) > -#define RZG2L_ADM3_ADCMP_E FIELD_PREP(RZG2L_ADM3_ADCMP_MASK, 0xe) > -#define RZG2L_ADM3_ADSMP_MASK GENMASK(15, 0) > > #define RZG2L_ADINT 0x20 > -#define RZG2L_ADINT_INTEN_MASK GENMASK(7, 0) > #define RZG2L_ADINT_CSEEN BIT(16) > #define RZG2L_ADINT_INTS BIT(31) > > #define RZG2L_ADSTS 0x24 > #define RZG2L_ADSTS_CSEST BIT(16) > -#define RZG2L_ADSTS_INTST_MASK GENMASK(7, 0) > > #define RZG2L_ADIVC 0x28 > #define RZG2L_ADIVC_DIVADC_MASK GENMASK(8, 0) > @@ -57,12 +52,27 @@ > #define RZG2L_ADCR(n) (0x30 + ((n) * 0x4)) > #define RZG2L_ADCR_AD_MASK GENMASK(11, 0) > > -#define RZG2L_ADSMP_DEFAULT_SAMPLING 0x578 > - > #define RZG2L_ADC_MAX_CHANNELS 8 > -#define RZG2L_ADC_CHN_MASK 0x7 > #define RZG2L_ADC_TIMEOUT usecs_to_jiffies(1 * 4) > > +/** > + * struct rzg2l_adc_hw_params - ADC hardware specific parameters > + * @default_adsmp: default ADC sampling period (see ADM3 register) > + * @adsmp_mask: ADC sampling period mask (see ADM3 register) > + * @adint_inten_mask: conversion end interrupt mask (see ADINT register) > + * @default_adcmp: default ADC cmp (see ADM3 register) > + * @num_channels: number of supported channels > + * @adivc: specifies if ADVIC register is available > + */ > +struct rzg2l_adc_hw_params { > + u16 default_adsmp; > + u16 adsmp_mask; > + u16 adint_inten_mask; > + u8 default_adcmp; > + u8 num_channels; > + bool adivc; > +}; > + > struct rzg2l_adc_data { > const struct iio_chan_spec *channels; > u8 num_channels; > @@ -72,8 +82,9 @@ struct rzg2l_adc { > void __iomem *base; > struct reset_control *presetn; > struct reset_control *adrstn; > - struct completion completion; > const struct rzg2l_adc_data *data; > + const struct rzg2l_adc_hw_params *hw_params; > + struct completion completion; > struct mutex lock; > u16 last_val[RZG2L_ADC_MAX_CHANNELS]; > }; > @@ -154,6 +165,7 @@ static void rzg2l_set_trigger(struct rzg2l_adc *adc) > > static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) > { > + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; > u32 reg; > > if (rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_ADBSY) > @@ -163,7 +175,7 @@ static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) > > /* Select analog input channel subjected to conversion. */ > reg = rzg2l_adc_readl(adc, RZG2L_ADM(2)); > - reg &= ~RZG2L_ADM2_CHSEL_MASK; > + reg &= ~GENMASK(hw_params->num_channels - 1, 0); > reg |= BIT(ch); > rzg2l_adc_writel(adc, RZG2L_ADM(2), reg); > > @@ -175,7 +187,7 @@ static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) > */ > reg = rzg2l_adc_readl(adc, RZG2L_ADINT); > reg &= ~RZG2L_ADINT_INTS; > - reg &= ~RZG2L_ADINT_INTEN_MASK; > + reg &= ~hw_params->adint_inten_mask; > reg |= (RZG2L_ADINT_CSEEN | BIT(ch)); > rzg2l_adc_writel(adc, RZG2L_ADINT, reg); > > @@ -184,6 +196,7 @@ static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) > > static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc, u8 ch) > { > + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; > struct device *dev = indio_dev->dev.parent; > int ret; > > @@ -201,7 +214,7 @@ static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc > > if (!wait_for_completion_timeout(&adc->completion, RZG2L_ADC_TIMEOUT)) { > rzg2l_adc_writel(adc, RZG2L_ADINT, > - rzg2l_adc_readl(adc, RZG2L_ADINT) & ~RZG2L_ADINT_INTEN_MASK); > + rzg2l_adc_readl(adc, RZG2L_ADINT) & ~hw_params->adint_inten_mask); > ret = -ETIMEDOUT; > } > > @@ -219,7 +232,6 @@ static int rzg2l_adc_read_raw(struct iio_dev *indio_dev, > { > struct rzg2l_adc *adc = iio_priv(indio_dev); > int ret; > - u8 ch; > > switch (mask) { > case IIO_CHAN_INFO_RAW: { > @@ -228,12 +240,11 @@ static int rzg2l_adc_read_raw(struct iio_dev *indio_dev, > > guard(mutex)(&adc->lock); > > - ch = chan->channel & RZG2L_ADC_CHN_MASK; > - ret = rzg2l_adc_conversion(indio_dev, adc, ch); > + ret = rzg2l_adc_conversion(indio_dev, adc, chan->channel); > if (ret) > return ret; > > - *val = adc->last_val[ch]; > + *val = adc->last_val[chan->channel]; > > return IIO_VAL_INT; > } > @@ -258,6 +269,7 @@ static const struct iio_info rzg2l_adc_iio_info = { > static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) > { > struct rzg2l_adc *adc = dev_id; > + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; > unsigned long intst; > u32 reg; > int ch; > @@ -270,11 +282,11 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) > return IRQ_HANDLED; > } > > - intst = reg & RZG2L_ADSTS_INTST_MASK; > + intst = reg & GENMASK(hw_params->num_channels - 1, 0); > if (!intst) > return IRQ_NONE; > > - for_each_set_bit(ch, &intst, RZG2L_ADC_MAX_CHANNELS) > + for_each_set_bit(ch, &intst, hw_params->num_channels) > adc->last_val[ch] = rzg2l_adc_readl(adc, RZG2L_ADCR(ch)) & RZG2L_ADCR_AD_MASK; > > /* clear the channel interrupt */ > @@ -287,6 +299,7 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) > > static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc) > { > + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; > struct iio_chan_spec *chan_array; > struct rzg2l_adc_data *data; > unsigned int channel; > @@ -302,7 +315,7 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l > if (!num_channels) > return dev_err_probe(&pdev->dev, -ENODEV, "no channel children\n"); > > - if (num_channels > RZG2L_ADC_MAX_CHANNELS) > + if (num_channels > hw_params->num_channels) > return dev_err_probe(&pdev->dev, -EINVAL, "num of channel children out of range\n"); > > chan_array = devm_kcalloc(&pdev->dev, num_channels, sizeof(*chan_array), > @@ -316,7 +329,7 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l > if (ret) > return ret; > > - if (channel >= RZG2L_ADC_MAX_CHANNELS) > + if (channel >= hw_params->num_channels) > return -EINVAL; > > chan_array[i].type = IIO_VOLTAGE; > @@ -336,6 +349,7 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l > > static int rzg2l_adc_hw_init(struct device *dev, struct rzg2l_adc *adc) > { > + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; > u32 reg; > int ret; > > @@ -353,11 +367,13 @@ static int rzg2l_adc_hw_init(struct device *dev, struct rzg2l_adc *adc) > if (ret) > goto exit_hw_init; > > - /* Only division by 4 can be set */ > - reg = rzg2l_adc_readl(adc, RZG2L_ADIVC); > - reg &= ~RZG2L_ADIVC_DIVADC_MASK; > - reg |= RZG2L_ADIVC_DIVADC_4; > - rzg2l_adc_writel(adc, RZG2L_ADIVC, reg); > + if (hw_params->adivc) { > + /* Only division by 4 can be set */ > + reg = rzg2l_adc_readl(adc, RZG2L_ADIVC); > + reg &= ~RZG2L_ADIVC_DIVADC_MASK; > + reg |= RZG2L_ADIVC_DIVADC_4; > + rzg2l_adc_writel(adc, RZG2L_ADIVC, reg); > + } > > /* > * Setup AMD3 > @@ -368,8 +384,10 @@ static int rzg2l_adc_hw_init(struct device *dev, struct rzg2l_adc *adc) > reg = rzg2l_adc_readl(adc, RZG2L_ADM(3)); > reg &= ~RZG2L_ADM3_ADIL_MASK; > reg &= ~RZG2L_ADM3_ADCMP_MASK; > - reg &= ~RZG2L_ADM3_ADSMP_MASK; > - reg |= (RZG2L_ADM3_ADCMP_E | RZG2L_ADSMP_DEFAULT_SAMPLING); > + reg &= ~hw_params->adsmp_mask; > + reg |= FIELD_PREP(RZG2L_ADM3_ADCMP_MASK, hw_params->default_adcmp) | > + hw_params->default_adsmp; > + > rzg2l_adc_writel(adc, RZG2L_ADM(3), reg); > > exit_hw_init: > @@ -392,6 +410,10 @@ static int rzg2l_adc_probe(struct platform_device *pdev) > > adc = iio_priv(indio_dev); > > + adc->hw_params = device_get_match_data(dev); > + if (!adc->hw_params || adc->hw_params->num_channels > RZG2L_ADC_MAX_CHANNELS) > + return -EINVAL; > + > ret = rzg2l_adc_parse_properties(pdev, adc); > if (ret) > return ret; > @@ -444,8 +466,17 @@ static int rzg2l_adc_probe(struct platform_device *pdev) > return devm_iio_device_register(dev, indio_dev); > } > > +static const struct rzg2l_adc_hw_params rzg2l_hw_params = { > + .num_channels = 8, > + .default_adcmp = 0xe, > + .default_adsmp = 0x578, > + .adsmp_mask = GENMASK(15, 0), > + .adint_inten_mask = GENMASK(7, 0), > + .adivc = true > +}; > + > static const struct of_device_id rzg2l_adc_match[] = { > - { .compatible = "renesas,rzg2l-adc",}, > + { .compatible = "renesas,rzg2l-adc", .data = &rzg2l_hw_params }, > { /* sentinel */ } > }; > MODULE_DEVICE_TABLE(of, rzg2l_adc_match); > -- > 2.39.2 > >
diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index c3f9f95cdbba..6740912f83c5 100644 --- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -33,20 +33,15 @@ #define RZG2L_ADM1_MS BIT(2) #define RZG2L_ADM1_BS BIT(4) #define RZG2L_ADM1_EGA_MASK GENMASK(13, 12) -#define RZG2L_ADM2_CHSEL_MASK GENMASK(7, 0) #define RZG2L_ADM3_ADIL_MASK GENMASK(31, 24) #define RZG2L_ADM3_ADCMP_MASK GENMASK(23, 16) -#define RZG2L_ADM3_ADCMP_E FIELD_PREP(RZG2L_ADM3_ADCMP_MASK, 0xe) -#define RZG2L_ADM3_ADSMP_MASK GENMASK(15, 0) #define RZG2L_ADINT 0x20 -#define RZG2L_ADINT_INTEN_MASK GENMASK(7, 0) #define RZG2L_ADINT_CSEEN BIT(16) #define RZG2L_ADINT_INTS BIT(31) #define RZG2L_ADSTS 0x24 #define RZG2L_ADSTS_CSEST BIT(16) -#define RZG2L_ADSTS_INTST_MASK GENMASK(7, 0) #define RZG2L_ADIVC 0x28 #define RZG2L_ADIVC_DIVADC_MASK GENMASK(8, 0) @@ -57,12 +52,27 @@ #define RZG2L_ADCR(n) (0x30 + ((n) * 0x4)) #define RZG2L_ADCR_AD_MASK GENMASK(11, 0) -#define RZG2L_ADSMP_DEFAULT_SAMPLING 0x578 - #define RZG2L_ADC_MAX_CHANNELS 8 -#define RZG2L_ADC_CHN_MASK 0x7 #define RZG2L_ADC_TIMEOUT usecs_to_jiffies(1 * 4) +/** + * struct rzg2l_adc_hw_params - ADC hardware specific parameters + * @default_adsmp: default ADC sampling period (see ADM3 register) + * @adsmp_mask: ADC sampling period mask (see ADM3 register) + * @adint_inten_mask: conversion end interrupt mask (see ADINT register) + * @default_adcmp: default ADC cmp (see ADM3 register) + * @num_channels: number of supported channels + * @adivc: specifies if ADVIC register is available + */ +struct rzg2l_adc_hw_params { + u16 default_adsmp; + u16 adsmp_mask; + u16 adint_inten_mask; + u8 default_adcmp; + u8 num_channels; + bool adivc; +}; + struct rzg2l_adc_data { const struct iio_chan_spec *channels; u8 num_channels; @@ -72,8 +82,9 @@ struct rzg2l_adc { void __iomem *base; struct reset_control *presetn; struct reset_control *adrstn; - struct completion completion; const struct rzg2l_adc_data *data; + const struct rzg2l_adc_hw_params *hw_params; + struct completion completion; struct mutex lock; u16 last_val[RZG2L_ADC_MAX_CHANNELS]; }; @@ -154,6 +165,7 @@ static void rzg2l_set_trigger(struct rzg2l_adc *adc) static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) { + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; u32 reg; if (rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_ADBSY) @@ -163,7 +175,7 @@ static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) /* Select analog input channel subjected to conversion. */ reg = rzg2l_adc_readl(adc, RZG2L_ADM(2)); - reg &= ~RZG2L_ADM2_CHSEL_MASK; + reg &= ~GENMASK(hw_params->num_channels - 1, 0); reg |= BIT(ch); rzg2l_adc_writel(adc, RZG2L_ADM(2), reg); @@ -175,7 +187,7 @@ static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) */ reg = rzg2l_adc_readl(adc, RZG2L_ADINT); reg &= ~RZG2L_ADINT_INTS; - reg &= ~RZG2L_ADINT_INTEN_MASK; + reg &= ~hw_params->adint_inten_mask; reg |= (RZG2L_ADINT_CSEEN | BIT(ch)); rzg2l_adc_writel(adc, RZG2L_ADINT, reg); @@ -184,6 +196,7 @@ static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc, u8 ch) { + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; struct device *dev = indio_dev->dev.parent; int ret; @@ -201,7 +214,7 @@ static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc if (!wait_for_completion_timeout(&adc->completion, RZG2L_ADC_TIMEOUT)) { rzg2l_adc_writel(adc, RZG2L_ADINT, - rzg2l_adc_readl(adc, RZG2L_ADINT) & ~RZG2L_ADINT_INTEN_MASK); + rzg2l_adc_readl(adc, RZG2L_ADINT) & ~hw_params->adint_inten_mask); ret = -ETIMEDOUT; } @@ -219,7 +232,6 @@ static int rzg2l_adc_read_raw(struct iio_dev *indio_dev, { struct rzg2l_adc *adc = iio_priv(indio_dev); int ret; - u8 ch; switch (mask) { case IIO_CHAN_INFO_RAW: { @@ -228,12 +240,11 @@ static int rzg2l_adc_read_raw(struct iio_dev *indio_dev, guard(mutex)(&adc->lock); - ch = chan->channel & RZG2L_ADC_CHN_MASK; - ret = rzg2l_adc_conversion(indio_dev, adc, ch); + ret = rzg2l_adc_conversion(indio_dev, adc, chan->channel); if (ret) return ret; - *val = adc->last_val[ch]; + *val = adc->last_val[chan->channel]; return IIO_VAL_INT; } @@ -258,6 +269,7 @@ static const struct iio_info rzg2l_adc_iio_info = { static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) { struct rzg2l_adc *adc = dev_id; + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; unsigned long intst; u32 reg; int ch; @@ -270,11 +282,11 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) return IRQ_HANDLED; } - intst = reg & RZG2L_ADSTS_INTST_MASK; + intst = reg & GENMASK(hw_params->num_channels - 1, 0); if (!intst) return IRQ_NONE; - for_each_set_bit(ch, &intst, RZG2L_ADC_MAX_CHANNELS) + for_each_set_bit(ch, &intst, hw_params->num_channels) adc->last_val[ch] = rzg2l_adc_readl(adc, RZG2L_ADCR(ch)) & RZG2L_ADCR_AD_MASK; /* clear the channel interrupt */ @@ -287,6 +299,7 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc) { + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; struct iio_chan_spec *chan_array; struct rzg2l_adc_data *data; unsigned int channel; @@ -302,7 +315,7 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l if (!num_channels) return dev_err_probe(&pdev->dev, -ENODEV, "no channel children\n"); - if (num_channels > RZG2L_ADC_MAX_CHANNELS) + if (num_channels > hw_params->num_channels) return dev_err_probe(&pdev->dev, -EINVAL, "num of channel children out of range\n"); chan_array = devm_kcalloc(&pdev->dev, num_channels, sizeof(*chan_array), @@ -316,7 +329,7 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l if (ret) return ret; - if (channel >= RZG2L_ADC_MAX_CHANNELS) + if (channel >= hw_params->num_channels) return -EINVAL; chan_array[i].type = IIO_VOLTAGE; @@ -336,6 +349,7 @@ static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l static int rzg2l_adc_hw_init(struct device *dev, struct rzg2l_adc *adc) { + const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; u32 reg; int ret; @@ -353,11 +367,13 @@ static int rzg2l_adc_hw_init(struct device *dev, struct rzg2l_adc *adc) if (ret) goto exit_hw_init; - /* Only division by 4 can be set */ - reg = rzg2l_adc_readl(adc, RZG2L_ADIVC); - reg &= ~RZG2L_ADIVC_DIVADC_MASK; - reg |= RZG2L_ADIVC_DIVADC_4; - rzg2l_adc_writel(adc, RZG2L_ADIVC, reg); + if (hw_params->adivc) { + /* Only division by 4 can be set */ + reg = rzg2l_adc_readl(adc, RZG2L_ADIVC); + reg &= ~RZG2L_ADIVC_DIVADC_MASK; + reg |= RZG2L_ADIVC_DIVADC_4; + rzg2l_adc_writel(adc, RZG2L_ADIVC, reg); + } /* * Setup AMD3 @@ -368,8 +384,10 @@ static int rzg2l_adc_hw_init(struct device *dev, struct rzg2l_adc *adc) reg = rzg2l_adc_readl(adc, RZG2L_ADM(3)); reg &= ~RZG2L_ADM3_ADIL_MASK; reg &= ~RZG2L_ADM3_ADCMP_MASK; - reg &= ~RZG2L_ADM3_ADSMP_MASK; - reg |= (RZG2L_ADM3_ADCMP_E | RZG2L_ADSMP_DEFAULT_SAMPLING); + reg &= ~hw_params->adsmp_mask; + reg |= FIELD_PREP(RZG2L_ADM3_ADCMP_MASK, hw_params->default_adcmp) | + hw_params->default_adsmp; + rzg2l_adc_writel(adc, RZG2L_ADM(3), reg); exit_hw_init: @@ -392,6 +410,10 @@ static int rzg2l_adc_probe(struct platform_device *pdev) adc = iio_priv(indio_dev); + adc->hw_params = device_get_match_data(dev); + if (!adc->hw_params || adc->hw_params->num_channels > RZG2L_ADC_MAX_CHANNELS) + return -EINVAL; + ret = rzg2l_adc_parse_properties(pdev, adc); if (ret) return ret; @@ -444,8 +466,17 @@ static int rzg2l_adc_probe(struct platform_device *pdev) return devm_iio_device_register(dev, indio_dev); } +static const struct rzg2l_adc_hw_params rzg2l_hw_params = { + .num_channels = 8, + .default_adcmp = 0xe, + .default_adsmp = 0x578, + .adsmp_mask = GENMASK(15, 0), + .adint_inten_mask = GENMASK(7, 0), + .adivc = true +}; + static const struct of_device_id rzg2l_adc_match[] = { - { .compatible = "renesas,rzg2l-adc",}, + { .compatible = "renesas,rzg2l-adc", .data = &rzg2l_hw_params }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rzg2l_adc_match);