| Message ID | 20210825152518.379386-17-miquel.raynal@bootlin.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | TI AM437X ADC1 | expand |
On Wed, 25 Aug 2021 17:24:54 +0200 Miquel Raynal <miquel.raynal@bootlin.com> wrote: > So far every sub-cell parameter in this driver was hardcoded: cell name, > cell compatible, specific clock name and desired clock frequency. > > As we are about to introduce support for ADC1/magnetic reader, we need a > bit of flexibility. Let's add a driver data structure which will contain > these information. > > Co-developed-by: Jason Reeder <jreeder@ti.com> > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> > Signed-off-by: Jason Reeder <jreeder@ti.com> > --- > drivers/mfd/ti_am335x_tscadc.c | 20 +++++++++++++++----- > include/linux/mfd/ti_am335x_tscadc.h | 9 +++++++++ > 2 files changed, 24 insertions(+), 5 deletions(-) > > diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c > index 3231ccbbad02..0cea44b4bd1a 100644 > --- a/drivers/mfd/ti_am335x_tscadc.c > +++ b/drivers/mfd/ti_am335x_tscadc.c > @@ -136,6 +136,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) > return -EINVAL; > } > > + tscadc->data = of_device_get_match_data(&pdev->dev); As mentioned in later patch, I can't see that you actually wired this up here. match_data doesn't seem to be set. Otherwise looks fine to me. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > + > node = of_get_child_by_name(pdev->dev.of_node, "tsc"); > of_property_read_u32(node, "ti,wires", &tsc_wires); > of_property_read_u32(node, "ti,coordiante-readouts", &readouts); > @@ -209,7 +211,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > goto err_disable_clk; > } > > - tscadc->clk_div = (clk_get_rate(clk) / ADC_CLK) - 1; > + tscadc->clk_div = (clk_get_rate(clk) / tscadc->data->target_clk_rate) - 1; > regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div); > > /* Set the control register bits */ > @@ -238,8 +240,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) > if (tsc_wires > 0) { > tscadc->tsc_cell = tscadc->used_cells; > cell = &tscadc->cells[tscadc->used_cells++]; > - cell->name = "TI-am335x-tsc"; > - cell->of_compatible = "ti,am3359-tsc"; > + cell->name = tscadc->data->name_tscmag; > + cell->of_compatible = tscadc->data->compat_tscmag; > cell->platform_data = &tscadc; > cell->pdata_size = sizeof(tscadc); > } > @@ -248,8 +250,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) > if (adc_channels > 0) { > tscadc->adc_cell = tscadc->used_cells; > cell = &tscadc->cells[tscadc->used_cells++]; > - cell->name = "TI-am335x-adc"; > - cell->of_compatible = "ti,am3359-adc"; > + cell->name = tscadc->data->name_adc; > + cell->of_compatible = tscadc->data->compat_adc; > cell->platform_data = &tscadc; > cell->pdata_size = sizeof(tscadc); > } > @@ -335,6 +337,14 @@ static int __maybe_unused tscadc_resume(struct device *dev) > > static SIMPLE_DEV_PM_OPS(tscadc_pm_ops, tscadc_suspend, tscadc_resume); > > +static const struct ti_tscadc_data tscdata = { > + .name_tscmag = "TI-am335x-tsc", > + .compat_tscmag = "ti,am3359-tsc", > + .name_adc = "TI-am335x-adc", > + .compat_adc = "ti,am3359-adc", > + .target_clk_rate = ADC_CLK, > +}; > + > static const struct of_device_id ti_tscadc_dt_ids[] = { > { .compatible = "ti,am3359-tscadc", }, > { } > diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h > index ffc091b77633..0f581c15d95a 100644 > --- a/include/linux/mfd/ti_am335x_tscadc.h > +++ b/include/linux/mfd/ti_am335x_tscadc.h > @@ -162,11 +162,20 @@ > > #define TSCADC_CELLS 2 > > +struct ti_tscadc_data { > + char *name_tscmag; > + char *compat_tscmag; > + char *name_adc; > + char *compat_adc; > + unsigned int target_clk_rate; > +}; > + > struct ti_tscadc_dev { > struct device *dev; > struct regmap *regmap; > void __iomem *tscadc_base; > phys_addr_t tscadc_phys_base; > + const struct ti_tscadc_data *data; > int irq; > int used_cells; /* 1-2 */ > int tsc_wires;
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index 3231ccbbad02..0cea44b4bd1a 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -136,6 +136,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) return -EINVAL; } + tscadc->data = of_device_get_match_data(&pdev->dev); + node = of_get_child_by_name(pdev->dev.of_node, "tsc"); of_property_read_u32(node, "ti,wires", &tsc_wires); of_property_read_u32(node, "ti,coordiante-readouts", &readouts); @@ -209,7 +211,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) goto err_disable_clk; } - tscadc->clk_div = (clk_get_rate(clk) / ADC_CLK) - 1; + tscadc->clk_div = (clk_get_rate(clk) / tscadc->data->target_clk_rate) - 1; regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div); /* Set the control register bits */ @@ -238,8 +240,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) if (tsc_wires > 0) { tscadc->tsc_cell = tscadc->used_cells; cell = &tscadc->cells[tscadc->used_cells++]; - cell->name = "TI-am335x-tsc"; - cell->of_compatible = "ti,am3359-tsc"; + cell->name = tscadc->data->name_tscmag; + cell->of_compatible = tscadc->data->compat_tscmag; cell->platform_data = &tscadc; cell->pdata_size = sizeof(tscadc); } @@ -248,8 +250,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) if (adc_channels > 0) { tscadc->adc_cell = tscadc->used_cells; cell = &tscadc->cells[tscadc->used_cells++]; - cell->name = "TI-am335x-adc"; - cell->of_compatible = "ti,am3359-adc"; + cell->name = tscadc->data->name_adc; + cell->of_compatible = tscadc->data->compat_adc; cell->platform_data = &tscadc; cell->pdata_size = sizeof(tscadc); } @@ -335,6 +337,14 @@ static int __maybe_unused tscadc_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(tscadc_pm_ops, tscadc_suspend, tscadc_resume); +static const struct ti_tscadc_data tscdata = { + .name_tscmag = "TI-am335x-tsc", + .compat_tscmag = "ti,am3359-tsc", + .name_adc = "TI-am335x-adc", + .compat_adc = "ti,am3359-adc", + .target_clk_rate = ADC_CLK, +}; + static const struct of_device_id ti_tscadc_dt_ids[] = { { .compatible = "ti,am3359-tscadc", }, { } diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h index ffc091b77633..0f581c15d95a 100644 --- a/include/linux/mfd/ti_am335x_tscadc.h +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -162,11 +162,20 @@ #define TSCADC_CELLS 2 +struct ti_tscadc_data { + char *name_tscmag; + char *compat_tscmag; + char *name_adc; + char *compat_adc; + unsigned int target_clk_rate; +}; + struct ti_tscadc_dev { struct device *dev; struct regmap *regmap; void __iomem *tscadc_base; phys_addr_t tscadc_phys_base; + const struct ti_tscadc_data *data; int irq; int used_cells; /* 1-2 */ int tsc_wires;