| Message ID | 20210902215144.507243-32-miquel.raynal@bootlin.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | TI AM437X ADC1 | expand |
On Thu, 2 Sep 2021 23:51:29 +0200 Miquel Raynal <miquel.raynal@bootlin.com> wrote: > Just checking the number of wires will soon not be enough, add a boolean > to indicated the actual use or not of the touchscreen. > > Certain checks only make sense when there is a touchscreen wired. Make > this checks explicitly depend on the presence of the touchscreen. Good. > > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > --- > drivers/mfd/ti_am335x_tscadc.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c > index f30bcdf600fb..cfdef833dffb 100644 > --- a/drivers/mfd/ti_am335x_tscadc.c > +++ b/drivers/mfd/ti_am335x_tscadc.c > @@ -120,6 +120,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > struct mfd_cell *cell; > struct property *prop; > const __be32 *cur; > + bool use_tsc = false; > u32 val; > int err; > int tscmag_wires = 0, adc_channels = 0, cell_idx = 0, total_channels; > @@ -143,6 +144,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) > of_property_read_u32(node, "ti,wires", &tscmag_wires); > of_property_read_u32(node, "ti,coordiante-readouts", &readouts); > of_node_put(node); > + if (tscmag_wires) > + use_tsc = true; > > node = of_get_child_by_name(pdev->dev.of_node, "adc"); > of_property_for_each_u32(node, "ti,adc-channels", prop, cur, val) { > @@ -168,7 +171,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > return -EINVAL; > } > > - if (readouts * 2 + 2 + adc_channels > 16) { > + if (use_tsc && (readouts * 2 + 2 + adc_channels > 16)) { > dev_err(&pdev->dev, "Too many step configurations requested\n"); > return -EINVAL; > } > @@ -221,7 +224,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > > /* Set the control register bits */ > tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; > - if (tscmag_wires > 0) { > + if (use_tsc) { > tscadc->ctrl |= CNTRLREG_TSC_ENB; > if (tscmag_wires == 5) > tscadc->ctrl |= CNTRLREG_TSC_5WIRE;
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index f30bcdf600fb..cfdef833dffb 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -120,6 +120,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) struct mfd_cell *cell; struct property *prop; const __be32 *cur; + bool use_tsc = false; u32 val; int err; int tscmag_wires = 0, adc_channels = 0, cell_idx = 0, total_channels; @@ -143,6 +144,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) of_property_read_u32(node, "ti,wires", &tscmag_wires); of_property_read_u32(node, "ti,coordiante-readouts", &readouts); of_node_put(node); + if (tscmag_wires) + use_tsc = true; node = of_get_child_by_name(pdev->dev.of_node, "adc"); of_property_for_each_u32(node, "ti,adc-channels", prop, cur, val) { @@ -168,7 +171,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) return -EINVAL; } - if (readouts * 2 + 2 + adc_channels > 16) { + if (use_tsc && (readouts * 2 + 2 + adc_channels > 16)) { dev_err(&pdev->dev, "Too many step configurations requested\n"); return -EINVAL; } @@ -221,7 +224,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) /* Set the control register bits */ tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; - if (tscmag_wires > 0) { + if (use_tsc) { tscadc->ctrl |= CNTRLREG_TSC_ENB; if (tscmag_wires == 5) tscadc->ctrl |= CNTRLREG_TSC_5WIRE;
Just checking the number of wires will soon not be enough, add a boolean to indicated the actual use or not of the touchscreen. Certain checks only make sense when there is a touchscreen wired. Make this checks explicitly depend on the presence of the touchscreen. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> --- drivers/mfd/ti_am335x_tscadc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)