#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,
.val_bits = 32,
};
-void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tsadc, u32 val)
+void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tscadc, u32 val)
{
unsigned long flags;
- spin_lock_irqsave(&tsadc->reg_lock, flags);
- tsadc->reg_se_cache |= 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);
+ spin_lock_irqsave(&tscadc->reg_lock, flags);
+ tscadc->reg_se_cache |= val;
+ if (tscadc->adc_waiting)
+ wake_up(&tscadc->reg_se_wait);
+ else if (!tscadc->adc_in_use)
+ regmap_write(tscadc->regmap, REG_SE, tscadc->reg_se_cache);
- spin_unlock_irqrestore(&tsadc->reg_lock, flags);
+ spin_unlock_irqrestore(&tscadc->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(am335x_tsc_se_set_cache);
-static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
+static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tscadc)
{
DEFINE_WAIT(wait);
u32 reg;
- reg = tscadc_readl(tsadc, REG_ADCFSM);
+ regmap_read(tscadc->regmap, REG_ADCFSM, ®);
if (reg & SEQ_STATUS) {
- tsadc->adc_waiting = true;
- prepare_to_wait(&tsadc->reg_se_wait, &wait,
+ tscadc->adc_waiting = true;
+ prepare_to_wait(&tscadc->reg_se_wait, &wait,
TASK_UNINTERRUPTIBLE);
- spin_unlock_irq(&tsadc->reg_lock);
+ spin_unlock_irq(&tscadc->reg_lock);
schedule();
- spin_lock_irq(&tsadc->reg_lock);
- finish_wait(&tsadc->reg_se_wait, &wait);
+ spin_lock_irq(&tscadc->reg_lock);
+ finish_wait(&tscadc->reg_se_wait, &wait);
/*
* Sequencer should either be idle or
* busy applying the charge step.
*/
- reg = tscadc_readl(tsadc, REG_ADCFSM);
+ regmap_read(tscadc->regmap, REG_ADCFSM, ®);
WARN_ON((reg & SEQ_STATUS) && !(reg & CHARGE_STEP));
- tsadc->adc_waiting = false;
+ tscadc->adc_waiting = false;
}
- tsadc->adc_in_use = true;
+ tscadc->adc_in_use = true;
}
-void am335x_tsc_se_set_once(struct ti_tscadc_dev *tsadc, u32 val)
+void am335x_tsc_se_set_once(struct ti_tscadc_dev *tscadc, u32 val)
{
- spin_lock_irq(&tsadc->reg_lock);
- am335x_tscadc_need_adc(tsadc);
+ spin_lock_irq(&tscadc->reg_lock);
+ am335x_tscadc_need_adc(tscadc);
- tscadc_writel(tsadc, REG_SE, val);
- spin_unlock_irq(&tsadc->reg_lock);
+ regmap_write(tscadc->regmap, REG_SE, val);
+ spin_unlock_irq(&tscadc->reg_lock);
}
EXPORT_SYMBOL_GPL(am335x_tsc_se_set_once);
-void am335x_tsc_se_adc_done(struct ti_tscadc_dev *tsadc)
+void am335x_tsc_se_adc_done(struct ti_tscadc_dev *tscadc)
{
unsigned long flags;
- spin_lock_irqsave(&tsadc->reg_lock, flags);
- tsadc->adc_in_use = false;
- tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache);
- spin_unlock_irqrestore(&tsadc->reg_lock, flags);
+ spin_lock_irqsave(&tscadc->reg_lock, flags);
+ tscadc->adc_in_use = false;
+ regmap_write(tscadc->regmap, REG_SE, tscadc->reg_se_cache);
+ spin_unlock_irqrestore(&tscadc->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(am335x_tsc_se_adc_done);
-void am335x_tsc_se_clr(struct ti_tscadc_dev *tsadc, u32 val)
+void am335x_tsc_se_clr(struct ti_tscadc_dev *tscadc, u32 val)
{
unsigned long flags;
- spin_lock_irqsave(&tsadc->reg_lock, flags);
- tsadc->reg_se_cache &= ~val;
- tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache);
- spin_unlock_irqrestore(&tsadc->reg_lock, flags);
+ spin_lock_irqsave(&tscadc->reg_lock, flags);
+ tscadc->reg_se_cache &= ~val;
+ regmap_write(tscadc->regmap, REG_SE, tscadc->reg_se_cache);
+ spin_unlock_irqrestore(&tscadc->reg_lock, flags);
}
EXPORT_SYMBOL_GPL(am335x_tsc_se_clr);
-static void tscadc_idle_config(struct ti_tscadc_dev *config)
+static void tscadc_idle_config(struct ti_tscadc_dev *tscadc)
{
unsigned int idleconfig;
idleconfig = STEPCONFIG_YNN | STEPCONFIG_INM_ADCREFM |
STEPCONFIG_INP_ADCREFM | STEPCONFIG_YPN;
- tscadc_writel(config, REG_IDLECONFIG, idleconfig);
+ regmap_write(tscadc->regmap, REG_IDLECONFIG, idleconfig);
}
static int ti_tscadc_probe(struct platform_device *pdev)
}
/* Allocate memory for device */
- tscadc = devm_kzalloc(&pdev->dev,
- sizeof(struct ti_tscadc_dev), GFP_KERNEL);
+ tscadc = devm_kzalloc(&pdev->dev, sizeof(*tscadc), GFP_KERNEL);
if (!tscadc) {
dev_err(&pdev->dev, "failed to allocate memory.\n");
return -ENOMEM;
if (IS_ERR(tscadc->tscadc_base))
return PTR_ERR(tscadc->tscadc_base);
- tscadc->regmap_tscadc = devm_regmap_init_mmio(&pdev->dev,
+ tscadc->regmap = devm_regmap_init_mmio(&pdev->dev,
tscadc->tscadc_base, &tscadc_regmap_config);
- if (IS_ERR(tscadc->regmap_tscadc)) {
+ if (IS_ERR(tscadc->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
- err = PTR_ERR(tscadc->regmap_tscadc);
+ err = PTR_ERR(tscadc->regmap);
goto ret;
}
/* 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, 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, REG_CTRL, ctrl);
/* Set register bits for Idle Config Mode */
if (tsc_wires > 0) {
/* Enable the TSC module enable bit */
ctrl |= CNTRLREG_TSCSSENB;
- tscadc_writel(tscadc, REG_CTRL, ctrl);
+ regmap_write(tscadc->regmap, REG_CTRL, ctrl);
tscadc->used_cells = 0;
tscadc->tsc_cell = -1;
{
struct ti_tscadc_dev *tscadc = platform_get_drvdata(pdev);
- tscadc_writel(tscadc, REG_SE, 0x00);
+ regmap_write(tscadc->regmap, REG_SE, 0x00);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0;
}
-#ifdef CONFIG_PM
-static int tscadc_suspend(struct device *dev)
+static int __maybe_unused tscadc_suspend(struct device *dev)
{
- struct ti_tscadc_dev *tscadc_dev = dev_get_drvdata(dev);
+ struct ti_tscadc_dev *tscadc = dev_get_drvdata(dev);
- tscadc_writel(tscadc_dev, REG_SE, 0x00);
+ regmap_write(tscadc->regmap, REG_SE, 0x00);
pm_runtime_put_sync(dev);
return 0;
}
-static int tscadc_resume(struct device *dev)
+static int __maybe_unused tscadc_resume(struct device *dev)
{
- struct ti_tscadc_dev *tscadc_dev = dev_get_drvdata(dev);
+ struct ti_tscadc_dev *tscadc = dev_get_drvdata(dev);
u32 ctrl;
pm_runtime_get_sync(dev);
/* context restore */
ctrl = CNTRLREG_STEPCONFIGWRT | CNTRLREG_STEPID;
- tscadc_writel(tscadc_dev, REG_CTRL, ctrl);
+ regmap_write(tscadc->regmap, REG_CTRL, ctrl);
- if (tscadc_dev->tsc_cell != -1) {
- if (tscadc_dev->tsc_wires == 5)
+ if (tscadc->tsc_cell != -1) {
+ if (tscadc->tsc_wires == 5)
ctrl |= CNTRLREG_5WIRE | CNTRLREG_TSCENB;
else
ctrl |= CNTRLREG_4WIRE | CNTRLREG_TSCENB;
- tscadc_idle_config(tscadc_dev);
+ tscadc_idle_config(tscadc);
}
ctrl |= CNTRLREG_TSCSSENB;
- tscadc_writel(tscadc_dev, REG_CTRL, ctrl);
+ regmap_write(tscadc->regmap, REG_CTRL, ctrl);
- tscadc_writel(tscadc_dev, REG_CLKDIV, tscadc_dev->clk_div);
+ regmap_write(tscadc->regmap, REG_CLKDIV, tscadc->clk_div);
return 0;
}
-static const struct dev_pm_ops tscadc_pm_ops = {
- .suspend = tscadc_suspend,
- .resume = tscadc_resume,
-};
-#define TSCADC_PM_OPS (&tscadc_pm_ops)
-#else
-#define TSCADC_PM_OPS NULL
-#endif
+static SIMPLE_DEV_PM_OPS(tscadc_pm_ops, tscadc_suspend, tscadc_resume);
static const struct of_device_id ti_tscadc_dt_ids[] = {
{ .compatible = "ti,am3359-tscadc", },
static struct platform_driver ti_tscadc_driver = {
.driver = {
.name = "ti_am3359-tscadc",
- .pm = TSCADC_PM_OPS,
+ .pm = &tscadc_pm_ops,
.of_match_table = ti_tscadc_dt_ids,
},
.probe = ti_tscadc_probe,
projects / cascardo / linux.git / blobdiff