Re: [PATCH 3/8] mfd: ti_am335x_tscadc: Remove use of single line functions

Lee Jones
2016-06-08T15:34:44Z

On Tue, 31 May 2016, Andrew F. Davis wrote:

> tscadc_readl and tscadc_writel are single line functions and do not save
> use anything, remove these.

Right. I usually push back on these type of abstraction when they are
submitted.

Acked-by: Lee Jones <lee.jones@linaro.org>

> Signed-off-by: Andrew F. Davis <afd@ti.com>
> ---
> drivers/mfd/ti_am335x_tscadc.c | 44 ++++++++++++++----------------------------
> 1 file changed, 15 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
> index 644128b..613f15d 100644
> --- a/drivers/mfd/ti_am335x_tscadc.c
> +++ b/drivers/mfd/ti_am335x_tscadc.c
> @@ -27,20 +27,6 @@
>
> #include <linux/mfd/ti_am335x_tscadc.h>
>
> -static unsigned int tscadc_readl(struct ti_tscadc_dev *tsadc, unsigned int reg)
> -{
> - unsigned int val;
> -
> - regmap_read(tsadc->regmap_tscadc, reg, &val);
> - return val;
> -}
> -
> -static void tscadc_writel(struct ti_tscadc_dev *tsadc, unsigned int reg,
> - unsigned int val)
> -{
> - regmap_write(tsadc->regmap_tscadc, reg, val);
> -}
> -
> static const struct regmap_config tscadc_regmap_config = {
> .name = "ti_tscadc",
> .reg_bits = 32,
> @@ -57,7 +43,7 @@ void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tsadc, u32 val)
> if (tsadc->adc_waiting)
> wake_up(&tsadc->reg_se_wait);
> else if (!tsadc->adc_in_use)
> - tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache);
> + regmap_write(tsadc->regmap_tscadc, REG_SE, tsadc->reg_se_cache);
>
> spin_unlock_irqrestore(&tsadc->reg_lock, flags);
> }
> @@ -68,7 +54,7 @@ static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
> DEFINE_WAIT(wait);
> u32 reg;
>
> - reg = tscadc_readl(tsadc, REG_ADCFSM);
> + regmap_read(tsadc->regmap_tscadc, REG_ADCFSM, &reg);
> if (reg & SEQ_STATUS) {
> tsadc->adc_waiting = true;
> prepare_to_wait(&tsadc->reg_se_wait, &wait,
> @@ -84,7 +70,7 @@ static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
> * Sequencer should either be idle or
> * busy applying the charge step.
> */
> - reg = tscadc_readl(tsadc, REG_ADCFSM);
> + regmap_read(tsadc->regmap_tscadc, REG_ADCFSM, &reg);
> WARN_ON((reg & SEQ_STATUS) && !(reg & CHARGE_STEP));
> tsadc->adc_waiting = false;
> }
> @@ -96,7 +82,7 @@ void am335x_tsc_se_set_once(struct ti_tscadc_dev *tsadc, u32 val)
> spin_lock_irq(&tsadc->reg_lock);
> am335x_tscadc_need_adc(tsadc);
>
> - tscadc_writel(tsadc, REG_SE, val);
> + regmap_write(tsadc->regmap_tscadc, REG_SE, val);
> spin_unlock_irq(&tsadc->reg_lock);
> }
> EXPORT_SYMBOL_GPL(am335x_tsc_se_set_once);
> @@ -107,7 +93,7 @@ void am335x_tsc_se_adc_done(struct ti_tscadc_dev *tsadc)
>
> spin_lock_irqsave(&tsadc->reg_lock, flags);
> tsadc->adc_in_use = false;
> - tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache);
> + regmap_write(tsadc->regmap_tscadc, REG_SE, tsadc->reg_se_cache);
> spin_unlock_irqrestore(&tsadc->reg_lock, flags);
> }
> EXPORT_SYMBOL_GPL(am335x_tsc_se_adc_done);
> @@ -118,7 +104,7 @@ void am335x_tsc_se_clr(struct ti_tscadc_dev *tsadc, u32 val)
>
> spin_lock_irqsave(&tsadc->reg_lock, flags);
> tsadc->reg_se_cache &= ~val;
> - tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache);
> + regmap_write(tsadc->regmap_tscadc, REG_SE, tsadc->reg_se_cache);
> spin_unlock_irqrestore(&tsadc->reg_lock, flags);
> }
> EXPORT_SYMBOL_GPL(am335x_tsc_se_clr);
> @@ -130,7 +116,7 @@ static void tscadc_idle_config(struct ti_tscadc_dev *config)
> idleconfig = STEPCONFIG_YNN | STEPCONFIG_INM_ADCREFM |
> STEPCONFIG_INP_ADCREFM | STEPCONFIG_YPN;
>
> - tscadc_writel(config, REG_IDLECONFIG, idleconfig);
> + regmap_write(config->regmap_tscadc, REG_IDLECONFIG, idleconfig);
> }
>
> static int ti_tscadc_probe(struct platform_device *pdev)
> @@ -236,11 +222,11 @@ static int ti_tscadc_probe(struct platform_device *pdev)
>
> /* TSCADC_CLKDIV needs to be configured to the value minus 1 */
> tscadc->clk_div--;
> - tscadc_writel(tscadc, REG_CLKDIV, tscadc->clk_div);
> + regmap_write(tscadc->regmap_tscadc, REG_CLKDIV, tscadc->clk_div);
>
> /* Set the control register bits */
> ctrl = CNTRLREG_STEPCONFIGWRT | CNTRLREG_STEPID;
> - tscadc_writel(tscadc, REG_CTRL, ctrl);
> + regmap_write(tscadc->regmap_tscadc, REG_CTRL, ctrl);
>
> /* Set register bits for Idle Config Mode */
> if (tsc_wires > 0) {
> @@ -254,7 +240,7 @@ static int ti_tscadc_probe(struct platform_device *pdev)
>
> /* Enable the TSC module enable bit */
> ctrl |= CNTRLREG_TSCSSENB;
> - tscadc_writel(tscadc, REG_CTRL, ctrl);
> + regmap_write(tscadc->regmap_tscadc, REG_CTRL, ctrl);
>
> tscadc->used_cells = 0;
> tscadc->tsc_cell = -1;
> @@ -300,7 +286,7 @@ static int ti_tscadc_remove(struct platform_device *pdev)
> {
> struct ti_tscadc_dev *tscadc = platform_get_drvdata(pdev);
>
> - tscadc_writel(tscadc, REG_SE, 0x00);
> + regmap_write(tscadc->regmap_tscadc, REG_SE, 0x00);
>
> pm_runtime_put_sync(&pdev->dev);
> pm_runtime_disable(&pdev->dev);
> @@ -314,7 +300,7 @@ static int __maybe_unused tscadc_suspend(struct device *dev)
> {
> struct ti_tscadc_dev *tscadc_dev = dev_get_drvdata(dev);
>
> - tscadc_writel(tscadc_dev, REG_SE, 0x00);
> + regmap_write(tscadc_dev->regmap_tscadc, REG_SE, 0x00);
> pm_runtime_put_sync(dev);
>
> return 0;
> @@ -329,7 +315,7 @@ static int __maybe_unused tscadc_resume(struct device *dev)
>
> /* context restore */
> ctrl = CNTRLREG_STEPCONFIGWRT | CNTRLREG_STEPID;
> - tscadc_writel(tscadc_dev, REG_CTRL, ctrl);
> + regmap_write(tscadc_dev->regmap_tscadc, REG_CTRL, ctrl);
>
> if (tscadc_dev->tsc_cell != -1) {
> if (tscadc_dev->tsc_wires == 5)
> @@ -339,9 +325,9 @@ static int __maybe_unused tscadc_resume(struct device *dev)
> tscadc_idle_config(tscadc_dev);
> }
> ctrl |= CNTRLREG_TSCSSENB;
> - tscadc_writel(tscadc_dev, REG_CTRL, ctrl);
> + regmap_write(tscadc_dev->regmap_tscadc, REG_CTRL, ctrl);
>
> - tscadc_writel(tscadc_dev, REG_CLKDIV, tscadc_dev->clk_div);
> + regmap_write(tscadc_dev->regmap_tscadc, REG_CLKDIV, tscadc_dev->clk_div);
>
> return 0;
> }

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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