| Message ID | 20210724190449.221894-4-cbranchereau@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | iio/adc: ingenic: add support for the JZ4760(B) Socs to the ingenic sadc driver | expand |
Le sam., juil. 24 2021 at 21:04:47 +0200, Christophe Branchereau <cbranchereau@gmail.com> a écrit : > The jz4760 sadc is very similar to the jz4770 one, but has a VREF of > 2.5V > and 3 aux channels. > > modify ingenic_adc_read_chan_info_raw() needs a change to account for > it. > > Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Cheers, -Paul > --- > drivers/iio/adc/ingenic-adc.c | 82 > +++++++++++++++++++++++++++++++++-- > 1 file changed, 78 insertions(+), 4 deletions(-) > > diff --git a/drivers/iio/adc/ingenic-adc.c > b/drivers/iio/adc/ingenic-adc.c > index 40f2d8c2cf72..6b9af0530590 100644 > --- a/drivers/iio/adc/ingenic-adc.c > +++ b/drivers/iio/adc/ingenic-adc.c > @@ -71,6 +71,7 @@ > #define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS 10 > #define JZ4740_ADC_BATTERY_HIGH_VREF (7500 * 0.986) > #define JZ4740_ADC_BATTERY_HIGH_VREF_BITS 12 > +#define JZ4760_ADC_BATTERY_VREF 2500 > #define JZ4770_ADC_BATTERY_VREF 1200 > #define JZ4770_ADC_BATTERY_VREF_BITS 12 > > @@ -295,6 +296,10 @@ static const int > jz4740_adc_battery_scale_avail[] = { > JZ_ADC_BATTERY_LOW_VREF, JZ_ADC_BATTERY_LOW_VREF_BITS, > }; > > +static const int jz4760_adc_battery_scale_avail[] = { > + JZ4760_ADC_BATTERY_VREF, JZ4770_ADC_BATTERY_VREF_BITS, > +}; > + > static const int jz4770_adc_battery_raw_avail[] = { > 0, 1, (1 << JZ4770_ADC_BATTERY_VREF_BITS) - 1, > }; > @@ -400,6 +405,47 @@ static const struct iio_chan_spec > jz4740_channels[] = { > }, > }; > > +static const struct iio_chan_spec jz4760_channels[] = { > + { > + .extend_name = "aux", > + .type = IIO_VOLTAGE, > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | > + BIT(IIO_CHAN_INFO_SCALE), > + .indexed = 1, > + .channel = INGENIC_ADC_AUX0, > + .scan_index = -1, > + }, > + { > + .extend_name = "aux1", > + .type = IIO_VOLTAGE, > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | > + BIT(IIO_CHAN_INFO_SCALE), > + .indexed = 1, > + .channel = INGENIC_ADC_AUX, > + .scan_index = -1, > + }, > + { > + .extend_name = "aux2", > + .type = IIO_VOLTAGE, > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | > + BIT(IIO_CHAN_INFO_SCALE), > + .indexed = 1, > + .channel = INGENIC_ADC_AUX2, > + .scan_index = -1, > + }, > + { > + .extend_name = "battery", > + .type = IIO_VOLTAGE, > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | > + BIT(IIO_CHAN_INFO_SCALE), > + .info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) | > + BIT(IIO_CHAN_INFO_SCALE), > + .indexed = 1, > + .channel = INGENIC_ADC_BATTERY, > + .scan_index = -1, > + }, > +}; > + > static const struct iio_chan_spec jz4770_channels[] = { > { > .type = IIO_VOLTAGE, > @@ -526,6 +572,20 @@ static const struct ingenic_adc_soc_data > jz4740_adc_soc_data = { > .init_clk_div = NULL, /* no ADCLK register on JZ4740 */ > }; > > +static const struct ingenic_adc_soc_data jz4760_adc_soc_data = { > + .battery_high_vref = JZ4760_ADC_BATTERY_VREF, > + .battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS, > + .battery_raw_avail = jz4770_adc_battery_raw_avail, > + .battery_raw_avail_size = ARRAY_SIZE(jz4770_adc_battery_raw_avail), > + .battery_scale_avail = jz4760_adc_battery_scale_avail, > + .battery_scale_avail_size = > ARRAY_SIZE(jz4760_adc_battery_scale_avail), > + .battery_vref_mode = false, > + .has_aux_md = true, > + .channels = jz4760_channels, > + .num_channels = ARRAY_SIZE(jz4760_channels), > + .init_clk_div = jz4770_adc_init_clk_div, > +}; > + > static const struct ingenic_adc_soc_data jz4770_adc_soc_data = { > .battery_high_vref = JZ4770_ADC_BATTERY_VREF, > .battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS, > @@ -569,7 +629,7 @@ static int ingenic_adc_read_chan_info_raw(struct > iio_dev *iio_dev, > struct iio_chan_spec const *chan, > int *val) > { > - int bit, ret, engine = (chan->channel == INGENIC_ADC_BATTERY); > + int cmd, ret, engine = (chan->channel == INGENIC_ADC_BATTERY); > struct ingenic_adc *adc = iio_priv(iio_dev); > > ret = clk_enable(adc->clk); > @@ -579,11 +639,22 @@ static int > ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, > return ret; > } > > - /* We cannot sample AUX/AUX2 in parallel. */ > + /* We cannot sample the aux channels in parallel. */ > mutex_lock(&adc->aux_lock); > if (adc->soc_data->has_aux_md && engine == 0) { > - bit = BIT(chan->channel == INGENIC_ADC_AUX2); > - ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, bit); > + switch (chan->channel) { > + case INGENIC_ADC_AUX0: > + cmd = 0; > + break; > + case INGENIC_ADC_AUX: > + cmd = 1; > + break; > + case INGENIC_ADC_AUX2: > + cmd = 2; > + break; > + } > + > + ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, cmd); > } > > ret = ingenic_adc_capture(adc, engine); > @@ -591,6 +662,7 @@ static int ingenic_adc_read_chan_info_raw(struct > iio_dev *iio_dev, > goto out; > > switch (chan->channel) { > + case INGENIC_ADC_AUX0: > case INGENIC_ADC_AUX: > case INGENIC_ADC_AUX2: > *val = readw(adc->base + JZ_ADC_REG_ADSDAT); > @@ -621,6 +693,7 @@ static int ingenic_adc_read_raw(struct iio_dev > *iio_dev, > return ingenic_adc_read_chan_info_raw(iio_dev, chan, val); > case IIO_CHAN_INFO_SCALE: > switch (chan->channel) { > + case INGENIC_ADC_AUX0: > case INGENIC_ADC_AUX: > case INGENIC_ADC_AUX2: > *val = JZ_ADC_AUX_VREF; > @@ -832,6 +905,7 @@ static int ingenic_adc_probe(struct > platform_device *pdev) > static const struct of_device_id ingenic_adc_of_match[] = { > { .compatible = "ingenic,jz4725b-adc", .data = > &jz4725b_adc_soc_data, }, > { .compatible = "ingenic,jz4740-adc", .data = &jz4740_adc_soc_data, > }, > + { .compatible = "ingenic,jz4760-adc", .data = &jz4760_adc_soc_data, > }, > { .compatible = "ingenic,jz4770-adc", .data = &jz4770_adc_soc_data, > }, > { }, > }; > -- > 2.30.2 >
diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index 40f2d8c2cf72..6b9af0530590 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -71,6 +71,7 @@ #define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS 10 #define JZ4740_ADC_BATTERY_HIGH_VREF (7500 * 0.986) #define JZ4740_ADC_BATTERY_HIGH_VREF_BITS 12 +#define JZ4760_ADC_BATTERY_VREF 2500 #define JZ4770_ADC_BATTERY_VREF 1200 #define JZ4770_ADC_BATTERY_VREF_BITS 12 @@ -295,6 +296,10 @@ static const int jz4740_adc_battery_scale_avail[] = { JZ_ADC_BATTERY_LOW_VREF, JZ_ADC_BATTERY_LOW_VREF_BITS, }; +static const int jz4760_adc_battery_scale_avail[] = { + JZ4760_ADC_BATTERY_VREF, JZ4770_ADC_BATTERY_VREF_BITS, +}; + static const int jz4770_adc_battery_raw_avail[] = { 0, 1, (1 << JZ4770_ADC_BATTERY_VREF_BITS) - 1, }; @@ -400,6 +405,47 @@ static const struct iio_chan_spec jz4740_channels[] = { }, }; +static const struct iio_chan_spec jz4760_channels[] = { + { + .extend_name = "aux", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_AUX0, + .scan_index = -1, + }, + { + .extend_name = "aux1", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_AUX, + .scan_index = -1, + }, + { + .extend_name = "aux2", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_AUX2, + .scan_index = -1, + }, + { + .extend_name = "battery", + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .channel = INGENIC_ADC_BATTERY, + .scan_index = -1, + }, +}; + static const struct iio_chan_spec jz4770_channels[] = { { .type = IIO_VOLTAGE, @@ -526,6 +572,20 @@ static const struct ingenic_adc_soc_data jz4740_adc_soc_data = { .init_clk_div = NULL, /* no ADCLK register on JZ4740 */ }; +static const struct ingenic_adc_soc_data jz4760_adc_soc_data = { + .battery_high_vref = JZ4760_ADC_BATTERY_VREF, + .battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS, + .battery_raw_avail = jz4770_adc_battery_raw_avail, + .battery_raw_avail_size = ARRAY_SIZE(jz4770_adc_battery_raw_avail), + .battery_scale_avail = jz4760_adc_battery_scale_avail, + .battery_scale_avail_size = ARRAY_SIZE(jz4760_adc_battery_scale_avail), + .battery_vref_mode = false, + .has_aux_md = true, + .channels = jz4760_channels, + .num_channels = ARRAY_SIZE(jz4760_channels), + .init_clk_div = jz4770_adc_init_clk_div, +}; + static const struct ingenic_adc_soc_data jz4770_adc_soc_data = { .battery_high_vref = JZ4770_ADC_BATTERY_VREF, .battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS, @@ -569,7 +629,7 @@ static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, struct iio_chan_spec const *chan, int *val) { - int bit, ret, engine = (chan->channel == INGENIC_ADC_BATTERY); + int cmd, ret, engine = (chan->channel == INGENIC_ADC_BATTERY); struct ingenic_adc *adc = iio_priv(iio_dev); ret = clk_enable(adc->clk); @@ -579,11 +639,22 @@ static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, return ret; } - /* We cannot sample AUX/AUX2 in parallel. */ + /* We cannot sample the aux channels in parallel. */ mutex_lock(&adc->aux_lock); if (adc->soc_data->has_aux_md && engine == 0) { - bit = BIT(chan->channel == INGENIC_ADC_AUX2); - ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, bit); + switch (chan->channel) { + case INGENIC_ADC_AUX0: + cmd = 0; + break; + case INGENIC_ADC_AUX: + cmd = 1; + break; + case INGENIC_ADC_AUX2: + cmd = 2; + break; + } + + ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, cmd); } ret = ingenic_adc_capture(adc, engine); @@ -591,6 +662,7 @@ static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, goto out; switch (chan->channel) { + case INGENIC_ADC_AUX0: case INGENIC_ADC_AUX: case INGENIC_ADC_AUX2: *val = readw(adc->base + JZ_ADC_REG_ADSDAT); @@ -621,6 +693,7 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev, return ingenic_adc_read_chan_info_raw(iio_dev, chan, val); case IIO_CHAN_INFO_SCALE: switch (chan->channel) { + case INGENIC_ADC_AUX0: case INGENIC_ADC_AUX: case INGENIC_ADC_AUX2: *val = JZ_ADC_AUX_VREF; @@ -832,6 +905,7 @@ static int ingenic_adc_probe(struct platform_device *pdev) static const struct of_device_id ingenic_adc_of_match[] = { { .compatible = "ingenic,jz4725b-adc", .data = &jz4725b_adc_soc_data, }, { .compatible = "ingenic,jz4740-adc", .data = &jz4740_adc_soc_data, }, + { .compatible = "ingenic,jz4760-adc", .data = &jz4760_adc_soc_data, }, { .compatible = "ingenic,jz4770-adc", .data = &jz4770_adc_soc_data, }, { }, };
The jz4760 sadc is very similar to the jz4770 one, but has a VREF of 2.5V and 3 aux channels. modify ingenic_adc_read_chan_info_raw() needs a change to account for it. Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com> --- drivers/iio/adc/ingenic-adc.c | 82 +++++++++++++++++++++++++++++++++-- 1 file changed, 78 insertions(+), 4 deletions(-)