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Date: Thu, 6 Aug 2020 19:15:53 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Daniel Campello <campello@...omium.org>
Cc: LKML <devicetree@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
Stephen Boyd <swboyd@...omium.org>,
Andy Shevchenko <andy.shevchenko@...il.com>,
Douglas Anderson <dianders@...omium.org>,
Gwendal Grignou <gwendal@...omium.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
linux-iio@...r.kernel.org
Subject: Re: [PATCH v5 02/15] iio: sx9310: Update macros declarations
On Mon, 3 Aug 2020 17:58:02 -0600
Daniel Campello <campello@...omium.org> wrote:
> Follows spec sheet for macro declarations.
>
> Signed-off-by: Daniel Campello <campello@...omium.org>
> Reviewed-by: Stephen Boyd <swboyd@...omium.org>
Applied,
Thanks,
Jonathan
> ---
>
> Changes in v5:
> - Added #include <linux/bitfield.h>
>
> Changes in v4:
> - Updated macro SX9310_REG_STAT1_COMPSTAT_MASK at call site.
> - Use FIELD_GET/FIELD_PREP instead of manual shift.
>
> Changes in v3: None
> Changes in v2: None
>
> drivers/iio/proximity/sx9310.c | 146 +++++++++++++++------------------
> 1 file changed, 68 insertions(+), 78 deletions(-)
>
> diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
> index d161f3061e353d..d7c77fc661ba86 100644
> --- a/drivers/iio/proximity/sx9310.c
> +++ b/drivers/iio/proximity/sx9310.c
> @@ -11,6 +11,7 @@
> */
>
> #include <linux/acpi.h>
> +#include <linux/bitfield.h>
> #include <linux/delay.h>
> #include <linux/i2c.h>
> #include <linux/irq.h>
> @@ -33,45 +34,44 @@
> #define SX9310_REG_IRQ_SRC 0x00
> #define SX9310_REG_STAT0 0x01
> #define SX9310_REG_STAT1 0x02
> +#define SX9310_REG_STAT1_COMPSTAT_MASK GENMASK(3, 0)
> #define SX9310_REG_IRQ_MSK 0x03
> #define SX9310_CONVDONE_IRQ BIT(3)
> #define SX9310_FAR_IRQ BIT(5)
> #define SX9310_CLOSE_IRQ BIT(6)
> -#define SX9310_EVENT_IRQ (SX9310_FAR_IRQ | \
> - SX9310_CLOSE_IRQ)
> #define SX9310_REG_IRQ_FUNC 0x04
>
> #define SX9310_REG_PROX_CTRL0 0x10
> -#define SX9310_REG_PROX_CTRL0_PROXSTAT2 0x10
> -#define SX9310_REG_PROX_CTRL0_EN_MASK 0x0F
> +#define SX9310_REG_PROX_CTRL0_SENSOREN_MASK GENMASK(3, 0)
> +#define SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK GENMASK(7, 4)
> +#define SX9310_REG_PROX_CTRL0_SCANPERIOD_15MS 0x01
> #define SX9310_REG_PROX_CTRL1 0x11
> #define SX9310_REG_PROX_CTRL2 0x12
> -#define SX9310_REG_PROX_CTRL2_COMBMODE_ALL 0x80
> -#define SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC 0x04
> +#define SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2 (0x02 << 6)
> +#define SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC (0x01 << 2)
> #define SX9310_REG_PROX_CTRL3 0x13
> -#define SX9310_REG_PROX_CTRL3_GAIN0_X8 0x0c
> +#define SX9310_REG_PROX_CTRL3_GAIN0_X8 (0x03 << 2)
> #define SX9310_REG_PROX_CTRL3_GAIN12_X4 0x02
> #define SX9310_REG_PROX_CTRL4 0x14
> #define SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST 0x07
> #define SX9310_REG_PROX_CTRL5 0x15
> -#define SX9310_REG_PROX_CTRL5_RANGE_SMALL 0xc0
> -#define SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1 0x04
> +#define SX9310_REG_PROX_CTRL5_RANGE_SMALL (0x03 << 6)
> +#define SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1 (0x01 << 2)
> #define SX9310_REG_PROX_CTRL5_RAWFILT_1P25 0x02
> #define SX9310_REG_PROX_CTRL6 0x16
> -#define SX9310_REG_PROX_CTRL6_COMP_COMMON 0x20
> +#define SX9310_REG_PROX_CTRL6_AVGTHRESH_DEFAULT 0x20
> #define SX9310_REG_PROX_CTRL7 0x17
> -#define SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 0x08
> +#define SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 (0x01 << 3)
> #define SX9310_REG_PROX_CTRL7_AVGPOSFILT_512 0x05
> #define SX9310_REG_PROX_CTRL8 0x18
> #define SX9310_REG_PROX_CTRL9 0x19
> -#define SX9310_REG_PROX_CTRL8_9_PTHRESH12_28 0x40
> -#define SX9310_REG_PROX_CTRL8_9_PTHRESH_96 0x88
> +#define SX9310_REG_PROX_CTRL8_9_PTHRESH_28 (0x08 << 3)
> +#define SX9310_REG_PROX_CTRL8_9_PTHRESH_96 (0x11 << 3)
> #define SX9310_REG_PROX_CTRL8_9_BODYTHRESH_900 0x03
> #define SX9310_REG_PROX_CTRL8_9_BODYTHRESH_1500 0x05
> #define SX9310_REG_PROX_CTRL10 0x1a
> -#define SX9310_REG_PROX_CTRL10_HYST_6PCT 0x10
> -#define SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_8 0x12
> -#define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_8 0x03
> +#define SX9310_REG_PROX_CTRL10_HYST_6PCT (0x01 << 4)
> +#define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2 0x01
> #define SX9310_REG_PROX_CTRL11 0x1b
> #define SX9310_REG_PROX_CTRL12 0x1c
> #define SX9310_REG_PROX_CTRL13 0x1d
> @@ -82,8 +82,8 @@
> #define SX9310_REG_PROX_CTRL18 0x22
> #define SX9310_REG_PROX_CTRL19 0x23
> #define SX9310_REG_SAR_CTRL0 0x2a
> -#define SX9310_REG_SAR_CTRL0_SARDEB_4_SAMPLES 0x40
> -#define SX9310_REG_SAR_CTRL0_SARHYST_8 0x10
> +#define SX9310_REG_SAR_CTRL0_SARDEB_4_SAMPLES (0x02 << 5)
> +#define SX9310_REG_SAR_CTRL0_SARHYST_8 (0x02 << 3)
> #define SX9310_REG_SAR_CTRL1 0x2b
> /* Each increment of the slope register is 0.0078125. */
> #define SX9310_REG_SAR_CTRL1_SLOPE(_hnslope) (_hnslope / 78125)
> @@ -107,7 +107,7 @@
> #define SX9310_REG_SAR_MSB 0x39
> #define SX9310_REG_SAR_LSB 0x3a
>
> -#define SX9310_REG_I2CADDR 0x40
> +#define SX9310_REG_I2C_ADDR 0x40
> #define SX9310_REG_PAUSE 0x41
> #define SX9310_REG_WHOAMI 0x42
> #define SX9310_WHOAMI_VALUE 0x01
> @@ -116,14 +116,9 @@
> #define SX9310_REG_RESET 0x7f
> #define SX9310_SOFT_RESET 0xde
>
> -#define SX9310_SCAN_PERIOD_MASK GENMASK(7, 4)
> -#define SX9310_SCAN_PERIOD_SHIFT 4
> -
> -#define SX9310_COMPSTAT_MASK GENMASK(3, 0)
>
> /* 4 hardware channels, as defined in STAT0: COMB, CS2, CS1 and CS0. */
> #define SX9310_NUM_CHANNELS 4
> -#define SX9310_CHAN_ENABLED_MASK GENMASK(3, 0)
>
> struct sx9310_data {
> /* Serialize access to registers and channel configuration */
> @@ -251,7 +246,7 @@ static const struct regmap_range sx9310_readable_reg_ranges[] = {
> regmap_reg_range(SX9310_REG_PROX_CTRL0, SX9310_REG_PROX_CTRL19),
> regmap_reg_range(SX9310_REG_SAR_CTRL0, SX9310_REG_SAR_CTRL2),
> regmap_reg_range(SX9310_REG_SENSOR_SEL, SX9310_REG_SAR_LSB),
> - regmap_reg_range(SX9310_REG_I2CADDR, SX9310_REG_WHOAMI),
> + regmap_reg_range(SX9310_REG_I2C_ADDR, SX9310_REG_WHOAMI),
> regmap_reg_range(SX9310_REG_RESET, SX9310_REG_RESET),
> };
>
> @@ -292,7 +287,7 @@ static int sx9310_update_chan_en(struct sx9310_data *data,
>
> if ((data->chan_read | data->chan_event) != (chan_read | chan_event)) {
> ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL0,
> - SX9310_CHAN_ENABLED_MASK,
> + SX9310_REG_PROX_CTRL0_SENSOREN_MASK,
> chan_read | chan_event);
> if (ret)
> return ret;
> @@ -361,7 +356,7 @@ static int sx9310_wait_for_sample(struct sx9310_data *data)
> if (ret < 0)
> return ret;
>
> - val = (val & SX9310_SCAN_PERIOD_MASK) >> SX9310_SCAN_PERIOD_SHIFT;
> + val = FIELD_GET(SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK, val);
>
> msleep(sx9310_scan_period_table[val]);
>
> @@ -435,7 +430,7 @@ static int sx9310_read_samp_freq(struct sx9310_data *data, int *val, int *val2)
> if (ret < 0)
> return ret;
>
> - regval = (regval & SX9310_SCAN_PERIOD_MASK) >> SX9310_SCAN_PERIOD_SHIFT;
> + regval = FIELD_GET(SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK, regval);
> *val = sx9310_samp_freq_table[regval].val;
> *val2 = sx9310_samp_freq_table[regval].val2;
>
> @@ -482,9 +477,10 @@ static int sx9310_set_samp_freq(struct sx9310_data *data, int val, int val2)
>
> mutex_lock(&data->mutex);
>
> - ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL0,
> - SX9310_SCAN_PERIOD_MASK,
> - i << SX9310_SCAN_PERIOD_SHIFT);
> + ret = regmap_update_bits(
> + data->regmap, SX9310_REG_PROX_CTRL0,
> + SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK,
> + FIELD_PREP(SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK, i));
>
> mutex_unlock(&data->mutex);
>
> @@ -572,7 +568,7 @@ static irqreturn_t sx9310_irq_thread_handler(int irq, void *private)
> goto out;
> }
>
> - if (val & SX9310_EVENT_IRQ)
> + if (val & (SX9310_FAR_IRQ | SX9310_CLOSE_IRQ))
> sx9310_push_events(indio_dev);
>
> if (val & SX9310_CONVDONE_IRQ)
> @@ -600,6 +596,7 @@ static int sx9310_write_event_config(struct iio_dev *indio_dev,
> enum iio_event_direction dir, int state)
> {
> struct sx9310_data *data = iio_priv(indio_dev);
> + unsigned int eventirq = SX9310_FAR_IRQ | SX9310_CLOSE_IRQ;
> int ret;
>
> /* If the state hasn't changed, there's nothing to do. */
> @@ -612,7 +609,7 @@ static int sx9310_write_event_config(struct iio_dev *indio_dev,
> if (ret < 0)
> goto out_unlock;
> if (!(data->chan_event & ~BIT(chan->channel))) {
> - ret = sx9310_enable_irq(data, SX9310_EVENT_IRQ);
> + ret = sx9310_enable_irq(data, eventirq);
> if (ret < 0)
> sx9310_put_event_channel(data, chan->channel);
> }
> @@ -621,7 +618,7 @@ static int sx9310_write_event_config(struct iio_dev *indio_dev,
> if (ret < 0)
> goto out_unlock;
> if (!data->chan_event) {
> - ret = sx9310_disable_irq(data, SX9310_EVENT_IRQ);
> + ret = sx9310_disable_irq(data, eventirq);
> if (ret < 0)
> sx9310_get_event_channel(data, chan->channel);
> }
> @@ -746,53 +743,46 @@ struct sx9310_reg_default {
> u8 def;
> };
>
> -#define SX_INIT(_reg, _def) \
> - { \
> - .reg = SX9310_REG_##_reg, \
> - .def = _def, \
> - }
> -
> static const struct sx9310_reg_default sx9310_default_regs[] = {
> - SX_INIT(IRQ_MSK, 0x00),
> - SX_INIT(IRQ_FUNC, 0x00),
> + { SX9310_REG_IRQ_MSK, 0x00 },
> + { SX9310_REG_IRQ_FUNC, 0x00 },
> /*
> * The lower 4 bits should not be set as it enable sensors measurements.
> * Turning the detection on before the configuration values are set to
> * good values can cause the device to return erroneous readings.
> */
> - SX_INIT(PROX_CTRL0, SX9310_REG_PROX_CTRL0_PROXSTAT2),
> - SX_INIT(PROX_CTRL1, 0x00),
> - SX_INIT(PROX_CTRL2, SX9310_REG_PROX_CTRL2_COMBMODE_ALL |
> - SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC),
> - SX_INIT(PROX_CTRL3, SX9310_REG_PROX_CTRL3_GAIN0_X8 |
> - SX9310_REG_PROX_CTRL3_GAIN12_X4),
> - SX_INIT(PROX_CTRL4, SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST),
> - SX_INIT(PROX_CTRL5, SX9310_REG_PROX_CTRL5_RANGE_SMALL |
> - SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1 |
> - SX9310_REG_PROX_CTRL5_RAWFILT_1P25),
> - SX_INIT(PROX_CTRL6, SX9310_REG_PROX_CTRL6_COMP_COMMON),
> - SX_INIT(PROX_CTRL7, SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 |
> - SX9310_REG_PROX_CTRL7_AVGPOSFILT_512),
> - SX_INIT(PROX_CTRL8, SX9310_REG_PROX_CTRL8_9_PTHRESH_96 |
> - SX9310_REG_PROX_CTRL8_9_BODYTHRESH_1500),
> - SX_INIT(PROX_CTRL9, SX9310_REG_PROX_CTRL8_9_PTHRESH12_28 |
> - SX9310_REG_PROX_CTRL8_9_BODYTHRESH_900),
> - SX_INIT(PROX_CTRL10, SX9310_REG_PROX_CTRL10_HYST_6PCT |
> - SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_8 |
> - SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_8),
> - SX_INIT(PROX_CTRL11, 0x00),
> - SX_INIT(PROX_CTRL12, 0x00),
> - SX_INIT(PROX_CTRL13, 0x00),
> - SX_INIT(PROX_CTRL14, 0x00),
> - SX_INIT(PROX_CTRL15, 0x00),
> - SX_INIT(PROX_CTRL16, 0x00),
> - SX_INIT(PROX_CTRL17, 0x00),
> - SX_INIT(PROX_CTRL18, 0x00),
> - SX_INIT(PROX_CTRL19, 0x00),
> - SX_INIT(SAR_CTRL0, SX9310_REG_SAR_CTRL0_SARDEB_4_SAMPLES |
> - SX9310_REG_SAR_CTRL0_SARHYST_8),
> - SX_INIT(SAR_CTRL1, SX9310_REG_SAR_CTRL1_SLOPE(10781250)),
> - SX_INIT(SAR_CTRL2, SX9310_REG_SAR_CTRL2_SAROFFSET_DEFAULT),
> + { SX9310_REG_PROX_CTRL0, SX9310_REG_PROX_CTRL0_SCANPERIOD_15MS },
> + { SX9310_REG_PROX_CTRL1, 0x00 },
> + { SX9310_REG_PROX_CTRL2, SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2 |
> + SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC },
> + { SX9310_REG_PROX_CTRL3, SX9310_REG_PROX_CTRL3_GAIN0_X8 |
> + SX9310_REG_PROX_CTRL3_GAIN12_X4 },
> + { SX9310_REG_PROX_CTRL4, SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST },
> + { SX9310_REG_PROX_CTRL5, SX9310_REG_PROX_CTRL5_RANGE_SMALL |
> + SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1 |
> + SX9310_REG_PROX_CTRL5_RAWFILT_1P25 },
> + { SX9310_REG_PROX_CTRL6, SX9310_REG_PROX_CTRL6_AVGTHRESH_DEFAULT },
> + { SX9310_REG_PROX_CTRL7, SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 |
> + SX9310_REG_PROX_CTRL7_AVGPOSFILT_512 },
> + { SX9310_REG_PROX_CTRL8, SX9310_REG_PROX_CTRL8_9_PTHRESH_96 |
> + SX9310_REG_PROX_CTRL8_9_BODYTHRESH_1500 },
> + { SX9310_REG_PROX_CTRL9, SX9310_REG_PROX_CTRL8_9_PTHRESH_28 |
> + SX9310_REG_PROX_CTRL8_9_BODYTHRESH_900 },
> + { SX9310_REG_PROX_CTRL10, SX9310_REG_PROX_CTRL10_HYST_6PCT |
> + SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2 },
> + { SX9310_REG_PROX_CTRL11, 0x00 },
> + { SX9310_REG_PROX_CTRL12, 0x00 },
> + { SX9310_REG_PROX_CTRL13, 0x00 },
> + { SX9310_REG_PROX_CTRL14, 0x00 },
> + { SX9310_REG_PROX_CTRL15, 0x00 },
> + { SX9310_REG_PROX_CTRL16, 0x00 },
> + { SX9310_REG_PROX_CTRL17, 0x00 },
> + { SX9310_REG_PROX_CTRL18, 0x00 },
> + { SX9310_REG_PROX_CTRL19, 0x00 },
> + { SX9310_REG_SAR_CTRL0, SX9310_REG_SAR_CTRL0_SARDEB_4_SAMPLES |
> + SX9310_REG_SAR_CTRL0_SARHYST_8 },
> + { SX9310_REG_SAR_CTRL1, SX9310_REG_SAR_CTRL1_SLOPE(10781250) },
> + { SX9310_REG_SAR_CTRL2, SX9310_REG_SAR_CTRL2_SAROFFSET_DEFAULT },
> };
>
> /* Activate all channels and perform an initial compensation. */
> @@ -809,7 +799,7 @@ static int sx9310_init_compensation(struct iio_dev *indio_dev)
>
> /* run the compensation phase on all channels */
> ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0,
> - ctrl0 | SX9310_REG_PROX_CTRL0_EN_MASK);
> + ctrl0 | SX9310_REG_PROX_CTRL0_SENSOREN_MASK);
> if (ret < 0)
> return ret;
>
> @@ -818,7 +808,7 @@ static int sx9310_init_compensation(struct iio_dev *indio_dev)
> ret = regmap_read(data->regmap, SX9310_REG_STAT1, &val);
> if (ret < 0)
> goto out;
> - if (!(val & SX9310_COMPSTAT_MASK))
> + if (!(val & SX9310_REG_STAT1_COMPSTAT_MASK))
> break;
> }
>
> @@ -992,7 +982,7 @@ static int __maybe_unused sx9310_suspend(struct device *dev)
> if (ret)
> goto out;
>
> - ctrl0 = data->suspend_ctrl0 & ~SX9310_REG_PROX_CTRL0_EN_MASK;
> + ctrl0 = data->suspend_ctrl0 & ~SX9310_REG_PROX_CTRL0_SENSOREN_MASK;
> ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0, ctrl0);
> if (ret)
> goto out;
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