static int mc13783_regulator_get_voltage(struct regulator_dev *rdev)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int ret, id = rdev_get_id(rdev);
unsigned int val;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
mc13783_lock(priv->mc13783);
ret = mc13783_reg_read(priv->mc13783,
mc13783_regulators[id].vsel_reg, &val);
mc13783_unlock(priv->mc13783);
if (ret)
return ret;
val = (val & mc13783_regulators[id].vsel_mask)
>> mc13783_regulators[id].vsel_shift;
dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages);
return mc13783_regulators[id].voltages[val];
}
static int mc13783_regulator_is_enabled(struct regulator_dev *rdev)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int ret, id = rdev_get_id(rdev);
unsigned int val;
mc13783_lock(priv->mc13783);
ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
mc13783_unlock(priv->mc13783);
if (ret)
return ret;
return (val & mc13783_regulators[id].enable_bit) != 0;
}
static int mc13783_regulator_disable(struct regulator_dev *rdev)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
int ret;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
mc13783_lock(priv->mc13783);
ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
mc13783_regulators[id].enable_bit, 0);
mc13783_unlock(priv->mc13783);
return ret;
}
static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int ret, id = rdev_get_id(rdev);
unsigned int val;
mc13783_lock(priv->mc13783);
ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
mc13783_unlock(priv->mc13783);
if (ret)
return ret;
/* Power Gates state is stored in powermisc_pwgt_state
* where the meaning of bits is negated */
val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
(priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
return (val & mc13783_regulators[id].enable_bit) != 0;
}
static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
int ret;
u32 dis_val = 0;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
/* Power Gate disable value is 1 */
if (id == MC13783_REGU_PWGT1SPI ||
id == MC13783_REGU_PWGT2SPI)
dis_val = mc13783_regulators[id].enable_bit;
mc13783_lock(priv->mc13783);
ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
dis_val);
mc13783_unlock(priv->mc13783);
return ret;
}
static irqreturn_t mc13783_irq_thread(int irq, void *data)
{
struct mc13783 *mc13783 = data;
irqreturn_t ret;
int handled = 0;
mc13783_lock(mc13783);
ret = mc13783_irq_handle(mc13783, MC13783_IRQSTAT0,
MC13783_IRQMASK0, MC13783_IRQ_ADCDONE);
if (ret > 0)
handled = 1;
ret = mc13783_irq_handle(mc13783, MC13783_IRQSTAT1,
MC13783_IRQMASK1, MC13783_IRQ_1HZ);
if (ret > 0)
handled = 1;
mc13783_unlock(mc13783);
return IRQ_RETVAL(handled);
}
static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int value, id = rdev_get_id(rdev);
int ret;
dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
__func__, id, min_uV, max_uV);
/* Find the best index */
value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV);
dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value);
if (value < 0)
return value;
mc13783_lock(priv->mc13783);
ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
mc13783_regulators[id].vsel_mask,
value << mc13783_regulators[id].vsel_shift);
mc13783_unlock(priv->mc13783);
return ret;
}
static int mc13783_probe(struct spi_device *spi)
{
struct mc13783 *mc13783;
struct mc13783_platform_data *pdata = dev_get_platdata(&spi->dev);
int ret;
mc13783 = kzalloc(sizeof(*mc13783), GFP_KERNEL);
if (!mc13783)
return -ENOMEM;
dev_set_drvdata(&spi->dev, mc13783);
spi->mode = SPI_MODE_0 | SPI_CS_HIGH;
spi->bits_per_word = 32;
spi_setup(spi);
mc13783->spidev = spi;
mutex_init(&mc13783->lock);
mc13783_lock(mc13783);
ret = mc13783_check_revision(mc13783);
if (ret)
goto err_revision;
/* mask all irqs */
ret = mc13783_reg_write(mc13783, MC13783_IRQMASK0, 0x00ffffff);
if (ret)
goto err_mask;
ret = mc13783_reg_write(mc13783, MC13783_IRQMASK1, 0x00ffffff);
if (ret)
goto err_mask;
ret = request_threaded_irq(spi->irq, NULL, mc13783_irq_thread,
IRQF_ONESHOT | IRQF_TRIGGER_HIGH, "mc13783", mc13783);
if (ret) {
err_mask:
err_revision:
mutex_unlock(&mc13783->lock);
dev_set_drvdata(&spi->dev, NULL);
kfree(mc13783);
return ret;
}
/* This should go away (BEGIN) */
if (pdata) {
mc13783->flags = pdata->flags;
mc13783->regulators = pdata->regulators;
mc13783->num_regulators = pdata->num_regulators;
}
/* This should go away (END) */
mc13783_unlock(mc13783);
if (pdata->flags & MC13783_USE_ADC)
mc13783_add_subdevice(mc13783, "mc13783-adc");
if (pdata->flags & MC13783_USE_CODEC)
mc13783_add_subdevice(mc13783, "mc13783-codec");
if (pdata->flags & MC13783_USE_REGULATOR) {
struct mc13783_regulator_platform_data regulator_pdata = {
.num_regulators = pdata->num_regulators,
.regulators = pdata->regulators,
};
mc13783_add_subdevice_pdata(mc13783, "mc13783-regulator",
®ulator_pdata, sizeof(regulator_pdata));
}
if (pdata->flags & MC13783_USE_RTC)
mc13783_add_subdevice(mc13783, "mc13783-rtc");
if (pdata->flags & MC13783_USE_TOUCHSCREEN)
mc13783_add_subdevice(mc13783, "mc13783-ts");
if (pdata->flags & MC13783_USE_LED)
mc13783_add_subdevice_pdata(mc13783, "mc13783-led",
pdata->leds, sizeof(*pdata->leds));
return 0;
}
static int __devexit mc13783_remove(struct spi_device *spi)
{
struct mc13783 *mc13783 = dev_get_drvdata(&spi->dev);
free_irq(mc13783->spidev->irq, mc13783);
mfd_remove_devices(&spi->dev);
return 0;
}
static struct spi_driver mc13783_driver = {
.driver = {
.name = "mc13783",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = mc13783_probe,
.remove = __devexit_p(mc13783_remove),
};
int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode,
unsigned int channel, unsigned int *sample)
{
u32 adc0, adc1, old_adc0;
int i, ret;
struct mc13783_adcdone_data adcdone_data = {
.mc13783 = mc13783,
};
init_completion(&adcdone_data.done);
dev_dbg(&mc13783->spidev->dev, "%s\n", __func__);
mc13783_lock(mc13783);
if (mc13783->flags & MC13783_ADC_WORKING) {
ret = -EBUSY;
goto out;
}
mc13783->flags |= MC13783_ADC_WORKING;
mc13783_reg_read(mc13783, MC13783_ADC0, &old_adc0);
adc0 = MC13783_ADC0_ADINC1 | MC13783_ADC0_ADINC2;
adc1 = MC13783_ADC1_ADEN | MC13783_ADC1_ADTRIGIGN | MC13783_ADC1_ASC;
if (channel > 7)
adc1 |= MC13783_ADC1_ADSEL;
switch (mode) {
case MC13783_ADC_MODE_TS:
adc0 |= MC13783_ADC0_ADREFEN | MC13783_ADC0_TSMOD0 |
MC13783_ADC0_TSMOD1;
adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT;
break;
case MC13783_ADC_MODE_SINGLE_CHAN:
adc0 |= old_adc0 & MC13783_ADC0_TSMOD_MASK;
adc1 |= (channel & 0x7) << MC13783_ADC1_CHAN0_SHIFT;
adc1 |= MC13783_ADC1_RAND;
break;
case MC13783_ADC_MODE_MULT_CHAN:
adc0 |= old_adc0 & MC13783_ADC0_TSMOD_MASK;
adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT;
break;
default:
mc13783_unlock(mc13783);
return -EINVAL;
}
dev_dbg(&mc13783->spidev->dev, "%s: request irq\n", __func__);
mc13783_irq_request(mc13783, MC13783_IRQ_ADCDONE,
mc13783_handler_adcdone, __func__, &adcdone_data);
mc13783_irq_ack(mc13783, MC13783_IRQ_ADCDONE);
mc13783_reg_write(mc13783, MC13783_REG_ADC_0, adc0);
mc13783_reg_write(mc13783, MC13783_REG_ADC_1, adc1);
mc13783_unlock(mc13783);
ret = wait_for_completion_interruptible_timeout(&adcdone_data.done, HZ);
if (!ret)
ret = -ETIMEDOUT;
mc13783_lock(mc13783);
mc13783_irq_free(mc13783, MC13783_IRQ_ADCDONE, &adcdone_data);
if (ret > 0)
for (i = 0; i < 4; ++i) {
ret = mc13783_reg_read(mc13783,
MC13783_REG_ADC_2, &sample[i]);
if (ret)
break;
}
if (mode == MC13783_ADC_MODE_TS)
/* restore TSMOD */
mc13783_reg_write(mc13783, MC13783_REG_ADC_0, old_adc0);
mc13783->flags &= ~MC13783_ADC_WORKING;
out:
mc13783_unlock(mc13783);
return ret;
}
