| Message ID | 20210825152518.379386-26-miquel.raynal@bootlin.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | TI AM437X ADC1 | expand |
On Wed, 25 Aug 2021 17:25:03 +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. > > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.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 2f934fd2154a..30f53cdb41f8 100644 > --- a/drivers/mfd/ti_am335x_tscadc.c > +++ b/drivers/mfd/ti_am335x_tscadc.c > @@ -121,6 +121,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > const __be32 *cur; > struct clk *clk; > u32 val; > + bool use_tsc = false; > int tscmag_wires = 0, adc_channels = 0, readouts = 0, cell_idx = 0; > int total_channels, err; > > @@ -141,6 +142,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) > node = of_get_child_by_name(pdev->dev.of_node, "tsc"); > of_property_read_u32(node, "ti,wires", &tscmag_wires); > of_property_read_u32(node, "ti,coordiante-readouts", &readouts); > + 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) { > @@ -163,7 +166,7 @@ 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)) { This one is adding a check that wasn't there before. The description should mention why it will now be necessary and isn't a bug... > dev_err(&pdev->dev, "Too many step configurations requested\n"); > return -EINVAL; > } > @@ -218,7 +221,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; > regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl); > > - 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 2f934fd2154a..30f53cdb41f8 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -121,6 +121,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) const __be32 *cur; struct clk *clk; u32 val; + bool use_tsc = false; int tscmag_wires = 0, adc_channels = 0, readouts = 0, cell_idx = 0; int total_channels, err; @@ -141,6 +142,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) node = of_get_child_by_name(pdev->dev.of_node, "tsc"); of_property_read_u32(node, "ti,wires", &tscmag_wires); of_property_read_u32(node, "ti,coordiante-readouts", &readouts); + 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) { @@ -163,7 +166,7 @@ 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; } @@ -218,7 +221,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl); - 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. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> --- drivers/mfd/ti_am335x_tscadc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)