| Message ID | 20210825152518.379386-23-miquel.raynal@bootlin.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | TI AM437X ADC1 | expand |
On Wed, 25 Aug 2021 17:25:00 +0200 Miquel Raynal <miquel.raynal@bootlin.com> wrote: > While the register list (and names) between ADC0 and ADC1 are pretty > close, the bits inside changed a little bit. To avoid any future > confusion, let's add the TSC prefix when some bits are in a register > that is common to both revisions of the ADC, but are specific to the > am33xx hardware. > > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> A few things inline that aren't strictly related to this patch, but might be nice to tidy up whilst you are here. Jonathan > --- > drivers/mfd/ti_am335x_tscadc.c | 10 +++++----- > include/linux/mfd/ti_am335x_tscadc.h | 16 ++++++++-------- > 2 files changed, 13 insertions(+), 13 deletions(-) > > diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c > index dd303523f9a3..02477ce827d0 100644 > --- a/drivers/mfd/ti_am335x_tscadc.c > +++ b/drivers/mfd/ti_am335x_tscadc.c > @@ -215,15 +215,15 @@ static int ti_tscadc_probe(struct platform_device *pdev) > regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div); > > /* Set the control register bits */ > - tscadc->ctrl = CNTRLREG_STEPCONFIGWRT | CNTRLREG_STEPID; > + tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; > regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl); > > if (tsc_wires > 0) { > - tscadc->ctrl |= CNTRLREG_TSCENB; > + tscadc->ctrl |= CNTRLREG_TSC_ENB; > if (tsc_wires == 5) > - tscadc->ctrl |= CNTRLREG_5WIRE; > + tscadc->ctrl |= CNTRLREG_TSC_5WIRE; > else > - tscadc->ctrl |= CNTRLREG_4WIRE; > + tscadc->ctrl |= CNTRLREG_TSC_4WIRE; > } > > tscadc_idle_config(tscadc); > @@ -322,7 +322,7 @@ static const struct ti_tscadc_data tscdata = { > .compat_tscmag = "ti,am3359-tsc", > .name_adc = "TI-am335x-adc", > .compat_adc = "ti,am3359-adc", > - .target_clk_rate = ADC_CLK, > + .target_clk_rate = TSC_ADC_CLK, > }; > > static const struct of_device_id ti_tscadc_dt_ids[] = { > diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h > index a900fae8354c..d5e2ff8dc84a 100644 > --- a/include/linux/mfd/ti_am335x_tscadc.h > +++ b/include/linux/mfd/ti_am335x_tscadc.h > @@ -120,14 +120,14 @@ > /* Control register */ > #define CNTRLREG_SSENB BIT(0) > #define CNTRLREG_STEPID BIT(1) > -#define CNTRLREG_STEPCONFIGWRT BIT(2) > +#define CNTRLREG_TSC_STEPCONFIGWRT BIT(2) > #define CNTRLREG_POWERDOWN BIT(4) > -#define CNTRLREG_AFE_CTRL_MASK (3 << 5) > -#define CNTRLREG_AFE_CTRL(val) ((val) << 5) > -#define CNTRLREG_4WIRE CNTRLREG_AFE_CTRL(1) > -#define CNTRLREG_5WIRE CNTRLREG_AFE_CTRL(2) > -#define CNTRLREG_8WIRE CNTRLREG_AFE_CTRL(3) > -#define CNTRLREG_TSCENB BIT(7) > +#define CNTRLREG_TSC_AFE_CTRL_MASK (3 << 5) Nicer to use GENMASK for masks. > +#define CNTRLREG_TSC_AFE_CTRL(val) ((val) << 5) If you are going to touch this, perhaps a good time to move to FIELD_PREP(). > +#define CNTRLREG_TSC_4WIRE CNTRLREG_TSC_AFE_CTRL(1) > +#define CNTRLREG_TSC_5WIRE CNTRLREG_TSC_AFE_CTRL(2) > +#define CNTRLREG_TSC_8WIRE CNTRLREG_TSC_AFE_CTRL(3) > +#define CNTRLREG_TSC_ENB BIT(7) > > /* FIFO READ Register */ > #define FIFOREAD_DATA_MASK (0xfff << 0) > @@ -141,7 +141,7 @@ > #define SEQ_STATUS BIT(5) > #define CHARGE_STEP 0x11 > > -#define ADC_CLK 3000000 > +#define TSC_ADC_CLK 3000000 > #define TOTAL_STEPS 16 > #define TOTAL_CHANNELS 8 > #define FIFO1_THRESHOLD 19
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index dd303523f9a3..02477ce827d0 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -215,15 +215,15 @@ static int ti_tscadc_probe(struct platform_device *pdev) regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div); /* Set the control register bits */ - tscadc->ctrl = CNTRLREG_STEPCONFIGWRT | CNTRLREG_STEPID; + tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl); if (tsc_wires > 0) { - tscadc->ctrl |= CNTRLREG_TSCENB; + tscadc->ctrl |= CNTRLREG_TSC_ENB; if (tsc_wires == 5) - tscadc->ctrl |= CNTRLREG_5WIRE; + tscadc->ctrl |= CNTRLREG_TSC_5WIRE; else - tscadc->ctrl |= CNTRLREG_4WIRE; + tscadc->ctrl |= CNTRLREG_TSC_4WIRE; } tscadc_idle_config(tscadc); @@ -322,7 +322,7 @@ static const struct ti_tscadc_data tscdata = { .compat_tscmag = "ti,am3359-tsc", .name_adc = "TI-am335x-adc", .compat_adc = "ti,am3359-adc", - .target_clk_rate = ADC_CLK, + .target_clk_rate = TSC_ADC_CLK, }; static const struct of_device_id ti_tscadc_dt_ids[] = { diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h index a900fae8354c..d5e2ff8dc84a 100644 --- a/include/linux/mfd/ti_am335x_tscadc.h +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -120,14 +120,14 @@ /* Control register */ #define CNTRLREG_SSENB BIT(0) #define CNTRLREG_STEPID BIT(1) -#define CNTRLREG_STEPCONFIGWRT BIT(2) +#define CNTRLREG_TSC_STEPCONFIGWRT BIT(2) #define CNTRLREG_POWERDOWN BIT(4) -#define CNTRLREG_AFE_CTRL_MASK (3 << 5) -#define CNTRLREG_AFE_CTRL(val) ((val) << 5) -#define CNTRLREG_4WIRE CNTRLREG_AFE_CTRL(1) -#define CNTRLREG_5WIRE CNTRLREG_AFE_CTRL(2) -#define CNTRLREG_8WIRE CNTRLREG_AFE_CTRL(3) -#define CNTRLREG_TSCENB BIT(7) +#define CNTRLREG_TSC_AFE_CTRL_MASK (3 << 5) +#define CNTRLREG_TSC_AFE_CTRL(val) ((val) << 5) +#define CNTRLREG_TSC_4WIRE CNTRLREG_TSC_AFE_CTRL(1) +#define CNTRLREG_TSC_5WIRE CNTRLREG_TSC_AFE_CTRL(2) +#define CNTRLREG_TSC_8WIRE CNTRLREG_TSC_AFE_CTRL(3) +#define CNTRLREG_TSC_ENB BIT(7) /* FIFO READ Register */ #define FIFOREAD_DATA_MASK (0xfff << 0) @@ -141,7 +141,7 @@ #define SEQ_STATUS BIT(5) #define CHARGE_STEP 0x11 -#define ADC_CLK 3000000 +#define TSC_ADC_CLK 3000000 #define TOTAL_STEPS 16 #define TOTAL_CHANNELS 8 #define FIFO1_THRESHOLD 19
While the register list (and names) between ADC0 and ADC1 are pretty close, the bits inside changed a little bit. To avoid any future confusion, let's add the TSC prefix when some bits are in a register that is common to both revisions of the ADC, but are specific to the am33xx hardware. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> --- drivers/mfd/ti_am335x_tscadc.c | 10 +++++----- include/linux/mfd/ti_am335x_tscadc.h | 16 ++++++++-------- 2 files changed, 13 insertions(+), 13 deletions(-)